Mood and anxiety disorders within the Research Domain Criteria framework of Positive and Negative Valence Systems: a scoping review

1. Introduction

Mood and anxiety disorders are highly prevalent and comorbid (Jacobi et al., 2014; World Health Organization, 2017) with mood disorders including major depression (MDD), dysthymia, bipolar disorder I and II (BD). Anxiety disorders (AD) comprise panic disorder (PD), agoraphobia (AG), generalized anxiety disorder (GAD), social anxiety/phobia (SAD), and specific phobia (SPD) and together with depressive disorders are amongst the major contributors of global disease burden (World Health Organization, 2017), with mood and anxiety disorders affecting ~8.3% of the total global population in 2019 (Global Health Data Exchange, 2020). Regarding the various diagnostic categories within mood and anxiety disorders, research has reported a substantial overlap in phenomenology and neurobiological mechanisms (Kendler et al., 1992; Watson, 2005). Especially for these disorders, there are challenges to the neurobiological phenotypic and diagnostic specificity that would be essential to refine treatments to ultimately improve treatment response in mental illness (Insel et al., 2010).

The United States (US) National Institute of Mental Health (NIMH) initiated the Research Domain Criteria (RDoC) project in 2010 to address the above mentioned issue of limited specificity and to offer a new framework to investigate mental disorders. The RDoC initiative had been developed to guide research on mental disorders with reference to disrupted brain and behavioral mechanisms, in contrast to “classifying non-taxonic [sic], multidimensional phenomena […] as mental disorders” (NIMH, 2008; Cuthbert and Insel, 2010, 2013; Clark et al., 2017, p. 94). Providing a dynamic guiding framework for research, the idea of the dimensional approach of RDoC has been to understand mental illness in all its complexity, therefore studying the full range of human functioning from normal to abnormal with respect to basic circuit-based behavioral dimensions, organized into major systems of emotion, cognition, motivation, and social behavior (Cuthbert and Insel, 2013; Clark et al., 2017; NIMH, 2023a). The NIMH's hope is that the RDoC framework will help to generate research that enables an improved characterization within this multidimensionality (Clark et al., 2017). The RDoC framework is conceptualized as a matrix currently grouped into six basic domains of functioning: Positive Valence Systems (PVS), Negative Valence Systems (NVS), Cognitive Systems (CS), Social Processes (SP), Arousal and Regulatory Systems (ARS), and Sensorimotor Systems (SmS; Insel et al., 2010; NIMH, 2023a,b). These domains can be investigated using the following units of analysis: Genes, molecules, cells, circuits, physiology, behavior, and self-report. The six domains are divided into constructs of which some are again divided into subconstructs. Within the RDoC framework there is great flexibility regarding the use of measures within each domain and regarding the units of analysis to allow for the investigation of all constructs that are relevant to improve knowledge about the etiology of mental diseases (Cuthbert, 2014; Clark et al., 2017).

The two domains of PVS and NVS and their corresponding constructs and subconstructs are particularly relevant to mood and anxiety disorders, as these systems are also represented in the Tripartite Model of Anxiety and Depression (Clark and Watson, 1991). Specifically, the model posits that NVS is predominant in anxiety disorders, and for PVS, alterations in hedonia may be more specific to mood disorders, while depressed mood has been shown to be present in both mood and anxiety disorders. The PVS domain encompasses systems that are “responsible for responses to positive motivational situations or contexts” (NIMH, 2023b). The PVS domain is currently grouped into the constructs reward responsiveness, reward learning, and reward valuation. Subconstructs within these constructs are reward anticipation, initial response to reward and reward satiation for reward responsiveness, probabilistic and reinforcement learning, reward prediction error and habit for reward learning, reward probability, delay and effort for reward valuation. The NVS domain covers systems that are “primarily responsible for responses to aversive situations or contexts” (NIMH, 2023b). The NVS domain currently encompasses the constructs acute threat (fear), potential threat (anxiety), sustained threat, loss, and frustrative nonreward. These constructs are not further divided into subconstructs.

While there has been a growing body of research adopting RDoC-related methods and constructs since its launch in 2010, there is a lack of comprehensive reviews providing an overview of published empirical research consistent with the RDoC framework (Carcone and Ruocco, 2017) and its dimensional and transnosological view on specific symptoms prevalent in existing diagnostic categories. Therefore, by changing the perspective from a focus on disease categories to broader RDoC domains, our goal was to bring together the existing research from this period into one review, which specifically focuses on overlapping constructs that are associated with comorbid and overlapping symptoms. Specifically, the purpose of this study was to conduct a scoping literature review to systematically summarize research investigating PVS and NVS constructs of mood and anxiety disorder symptoms as an approach toward the RDoC system. The following research question was formulated: What is the state of published research investigating the role of PVS and NVS with respect to mood and anxiety disorder symptoms using the RDoC framework? We hypothesized that this scoping review would add insight into the heterogenic diagnostic category of mood and anxiety disorders from the RDoC perspective and therefore enrich our basic understanding of the similarities and differences within this disease spectrum.

2. Methods 2.1. Review approach

The present scoping review was conducted in accordance with the Joanna Briggs Institute (JBI) specific recommendations for conducting scoping reviews (Arksey and O'Malley, 2005) and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guidelines (Tricco et al., 2018; see checklist in Supplementary material A). The objectives, inclusion criteria, and methods for this scoping review had been specified in advance and had been documented in our protocol (see Supplementary material B).

2.2. Eligibility criteria

Articles were included if the following inclusion criteria were met: (1) research with outcome measures of positive or negative valence with reference to the RDoC PVS and NVS framework, (2) research on all RDoC units of analysis, which are genetic, molecular, cellular, circuitry, physiological, behavioral and self-report assessments, (3) human studies of adult (18 years and older) participants, (4) individuals with symptoms of mood (depression, bipolar) or anxiety (anxiety or phobic) disorders, (5) all types of empirical research, (6) published in peer-reviewed journal papers, and (7) with full texts available. There were no language restrictions.

2.3. Information sources and search

We systematically searched the five electronic databases PubMed, PsychInfo, PsychArticles, PSYNDEX, and Web of Science first on April 26, 2021 and again on January 21, 2023. The search was conducted at domain level of PVS (keywords “positive valence”) and NVS (“negative valence”) and using the search terms “valence,” “affect,” and “emotion.” Our intention was to provide a more comprehensive coverage of search results, as authors in the initial RDoC publications referred to “positive affect,” “negative affect,” “positive emotionality” (Sanislow et al., 2010, p. 634) or “negative emotionality” (Insel et al., 2010, p. 749) when discussing potential areas of research that might have links to psychopathological mechanisms. The final search strategy for PsychInfo is presented in Table 1. For detailed search strategies for all sources, see Supplementary material C.

www.frontiersin.org

Table 1. PsychInfo search strategy.

2.4. Selection of sources of evidence

To identify relevant articles, a total of four members of our research team rated the articles independently, with two raters at each screening stage. We exported the search results into Citavi (version 6.14.4) and Covidence software. Both software programs detected and removed duplicates. Citavi was used to organize the extracted publications, while Covidence was used for the management of the search results, study selection, and data extraction. The study selection was carried out in two stages. First, we screened titles and abstracts of all articles against the eligibility criteria. Screening of titles and abstracts was performed with Covidence, alongside with double-checking references in Citavi and Microsoft Excel (version Microsoft 365) to ensure high quality of our review. In a second step, we examined full texts for all articles that were potentially relevant to our research objective. Disagreements between raters at each step were resolved by consensus after reviewing the full text.

2.5. Data charting and synthesis of results

If an article was eligible for inclusion in this study, we extracted data with focus on disorder, domain and constructs assessed, units of analysis, main aim, key findings, and general information including first author, year of appearance, origin (country/language), and study design. In line with scoping review guidelines, risk of bias assessment was not carried out (Tricco et al., 2018). The included studies were heterogeneous in terms of the outlined extracted information. We grouped sources by type of domain and study design and mapped information from the articles to the type of disorder, the seven units of analysis, and RDoC constructs. In addition, we listed relevant empirical elements and reported the key findings of the publication (see Tables 38). As a relevant number of articles was cross-domain oriented and this approach may shed light on differential effects of PVS and NVS on mood and anxiety disorder symptoms, we grouped those findings in a cross-domain section.

3. Results 3.1. Selection of sources of evidence

After duplicates were removed, we identified a total of 231 citations from searches of the five electronic databases. Based on title and abstract, 142 publications were excluded, with 89 full text papers to be assessed for eligibility. Of these, 46 were excluded. The remaining 43 studies were considered eligible for this scoping literature review (for reference lists of all papers searched, see Supplementary material D). The flow diagram is shown in Figure 1.

www.frontiersin.org

Figure 1. PRISMA flow diagram.

3.2. Characteristics of sources of evidence

The characteristics of the 43 included studies are presented in Table 2. The majority of sources were conducted in the US (n = 33, 75 %), three studies in Germany, two in Canada, and one study each in Australia, Brazil, Norway, the Netherlands, and the United Kingdom (UK). All articles were written in English. In this final scoping review, we identified 23 primary studies and 20 reviews addressing PVS and NVS in patients suffering from mood and anxiety disorders published between 2014 and 2023. Most of the papers included in this review reported results from self-report questionnaires and interviews (59%; 22 primary articles, four reviews), half used physiological measures (50%; eight primary articles, 14 reviews), and 19 included behavioral indicators (43%; 10 primary articles, nine reviews). Circuitry played a role in about a third of the reviewed publications (32%; five primary articles, 12 reviews). Not as strongly represented were cellular (7%; three reviews), molecular (11%; one primary article, four reviews), and genetic (11%; one primary article, four reviews) components. Findings are presented separately for PVS, NVS, and cross-domain studies (Tables 38).

www.frontiersin.org

Table 2. Characteristics of sources included.

www.frontiersin.org

Table 3. Positive Valence Systems (PVS) primary articles.

www.frontiersin.org

Table 4. Positive Valence Systems (PVS) reviews.

www.frontiersin.org

Table 5. Negative Valence Systems (NVS) primary articles.

www.frontiersin.org

Table 6. Negative Valence Systems (NVS) reviews.

www.frontiersin.org

Table 7. Cross-domain primary articles.

www.frontiersin.org

Table 8. Cross-domain reviews.

3.3. Positive Valence Systems

We identified 17 publications (10 primary articles, seven review articles) addressing research on PVS in mood and anxiety disorders guided by the RDoC framework. All primary and two of the review articles included self-report measures (71%). The majority of these articles combined self-report with at least one additional unit of analysis, most commonly physiology or behavior. Only two publications included the cellular unit (12%, two reviews). In this scoping review, we did not identify any published primary research focusing on PVS-related genes or cells in mood and anxiety disorders that was oriented toward the RDoC framework. Review articles focusing on the RDoC framework and investigating PVS in mood and anxiety disorders mostly reviewed research investigating the circuit unit of analysis (35%, one primary article, five reviews). A total of 12 articles exclusively focused on patients suffering from depressive disorders or symptoms (71%; eight primary articles, four reviews). While none focused exclusively on patients with AD, five articles included more than one patient group (29%; two primary articles, three reviews).

Impaired hedonic experience as a marker of impaired reward responsiveness has proven to be a relevant PVS-related construct specifically in patients with MDD (Nakonezny et al., 2015; Barch et al., 2016; Nusslock and Alloy, 2017; Trøstheim et al., 2020). Hedonic experience has been confirmed to be a unidimensional factor (Nakonezny et al., 2015) that has been found to be a responsive target of exercise treatment (Toups et al., 2017). Literature suggests that depression-related hedonic impairments trigger deficits in other PVS mechanisms like anticipation, learning, effort, and action selection and that these impairments are associated with alterations in striatal dopamine and/or opioid signaling (Barch et al., 2016; Nusslock and Alloy, 2017). Orbitofrontal cortico-striatal circuits (OFC-striatal circuits) were found to be associated with reward valuation and dysfunctions were found in patients with MDD. Furthermore, this review found that abnormal activation in these circuits was modifiable through (non-)invasive brain stimulation techniques (Fettes et al., 2017). One study (Alexopoulos et al., 2015, 2016) focused on an RDoC-oriented neuroscience-driven psychotherapeutic intervention. In this study, reward-exposure served as an RDoC-based intervention in late life depression. This approach proved efficacious in eliciting changes in behavioral activation that in turn led to improvement of depressive symptoms during treatment and follow-up (Alexopoulos et al., 2015, 2016). Familial risk of depression and aberrant reward processing has been shown to have significant impact on individuals' reward processing which increases over the course of puberty (Nusslock and Alloy, 2017; Ethridge et al., 2021). Furthermore, aberrant reward sensitivity on a neural and behavioral level was associated with risk for depression (Baskin-Sommers and Foti, 2015). Furthermore, aberrant reward processing was linked to molecular alterations in the dopamine system and an increased vulnerability to late-life depression (Taylor et al., 2022). Depressive symptoms could be linked to increased reward valuation and reduced effort (drive) as well as reduced reward responsiveness (Nusslock et al., 2015; Nusslock and Alloy, 2017; Swope et al., 2020). However, regarding behavioral and circuit-related reward responsiveness, Langenecker et al. (2022) found no differences between patients with remitted mood disorders and healthy controls. According to the authors, these results therefore suggest that reward responsiveness may serve as a proximal marker for acute affective symptoms rather than being a trait or stable marker of patients with mood disorders. Regarding the RDoC construct reward valuation, the subconstructs motivation and energy - as constructs matchable to effort and drive - were suggested to be more clinically relevant compared to anhedonia/hedonic experience (Toups et al., 2017). Furthermore, decreased approach motivation (as part of reward valuation) could be related to unipolar depression, whereas increased approach motivation could be related to bipolar disorder with both mechanisms showing distinct neuronal correlates (Nusslock et al., 2015; Nusslock and Alloy, 2017). PVS functioning as measured by the newly developed Positive Valence Systems Scale (PVSS-21), was more strongly linked to symptoms of depression compared to symptoms of anxiety, was able to distinguish between depressed vs. non-depressed individuals, and predicted severity of anhedonia (Khazanov et al., 2020). Using an exploratory factor analysis (EFA) approach, several PVS factors were identified as significantly related to depressive symptoms (Olino et al., 2018). Notably, positive emotions showed the strongest negative association with depressive symptoms among all identified factors. High-frequency heart rate variability as a marker of disturbances in positive emotional functioning has been shown to exhibit greater intra-individual variation in patients with bipolar disorder compared to patients with MDD or healthy controls (Gruber et al., 2015).

3.4. Negative Valence Systems

We identified 17 publications (eight primary articles, nine reviews) investigating the role of NVS in mood and anxiety disorders within the RDoC framework. With one exception, all primary articles employed self-report measures (53%, seven primary articles, two reviews), regularly in conjunction with one or more additional units of analysis. We did not find any primary research examining MDD and AD on a molecular or cellular level, and only one paper that accounted for genetic influences by incorporating twin data. Reviews were mainly centered around physiological measures (71%, four primary articles, eight reviews) that were often combined with behavioral tasks (47%, three primary articles, five reviews), neuroimaging (41%, three primary articles, four reviews), or genomic aspects (29%, one primary article, four reviews). Only one review also integrated research on the cellular correlates of MDD. Four out of 17 articles exclusively focused on patients diagnosed with MDD (24%), four on patients with AD (24%), and eight articles included more than one group of patients (47%). There were no primary articles and only one review pertaining to NVS in BD patients (5%). All NVS subconstructs were studied across diagnostic categories and generally assessed using multiple units of analysis. Acute, potential, and sustained threat received the most empirical attention, with many review articles examining all of them together. Frustrative nonreward received the least empirical attention with only one primary article investigating the construct in relation to depressive symptoms.

For the NVS subconstruct acute threat, an fMRI study of patients with symptoms of depression and anxiety revealed transdiagnostic patterns of altered threat processing in the bilateral insula, the cingulate and the dorsolateral prefrontal cortex (MacNamara et al., 2017). Self-reported stress reactivity as a measure of potential threat was found to modulate risk for comorbid expressions of MDD and alcohol use disorders (AUD) via genetic and environmental factors (Ellingson et al., 2016). Sustained threat in the form of trauma and chronic stress was linked to alterations in protein expression, neurocircuitry, physiology, and behavior, with evidence suggesting specific modulations of amygdala activation and Hypothalamic–Pituitary–Adrenal axis (HPA-axis) reactivity, highlighting the role of this subconstruct in the development of mood as well as anxiety disorders (Ross et al., 2017; Sambuco et al., 2020). ERP studies showed that while individuals with internalizing psychopathologies exhibited certain transdiagnostic abnormalities in threat processing (Klumpp and Shankman, 2018), depressive and anxious disorders were marked by diagnosis-specific modulations in startle response (Vaidyanathan et al., 2012; Boecker and Pauli, 2019) that predicted the severity and the extent of psychopathology (Lang et al., 2016, 2018). Some of these abnormalities have been traced back to disorder-specific genetic alterations within the serotonergic system and the HPA-axis (Hamm et al., 2016). Two review articles regarding the NVS subconstruct loss discussed the role of rumination in MDD and BD patients and outlined potential approaches for the further study of depressive symptomatology within the RDoC framework (Silveira and Kauer-Sant'Anna, 2015; Woody and Gibb, 2015). As a behavioral component of loss, self-reported anhedonia was found to predict symptom severity for a broad range of psychiatric disorders, with particularly strong associations existing between anhedonia and depression (Guineau et al., 2022). A single article focused on Frustrative nonreward in conjunction with loss and potential threat, establishing these constructs as transdiagnostic features implicated in the development and change of depressive symptoms over the course of pregnancy and postpartum in a factor analysis of self-report questionnaire data (Cochran et al., 2020). Examining sustained threat and loss, a review of genetic influences on attentional bias showed that MDD and AD patients were characterized by disorder-specific alterations in attentional bias for affectively salient stimuli, and that the development of these differences was a consequence of environmental factors interacting with genes related to HPA-axis reactivity. Overall, research suggests the existence of transdiagnostic as well as disorder-specific dysfunctions in NVS domains across different units of analysis in MDD, AD, and BD patients.

3.5. Cross-domain Positive and Negative Valence Systems

We identified nine publications (five primary articles, four review articles) covering cross-domain research on PVS and NVS in mood and anxiety disorders in accordance with the RDoC framework. All primary articles but none of the reviews reported results from self-report questionnaires or interviews (50%). Behavioral measures also mainly played a role in primary research (40%, three primary articles, one review) while review articles again put more emphasis on circuitry (40%, one primary article, three review articles) and physiology (30%, one primary article, two reviews). Two articles also reported findings on the molecular level (20%, one primary article, one review). We did not identify relevant cross-domain research regarding genetic and cellular correlates of PVS and NVS functioning. Cross-domain articles reported mainly on samples including more than one patient group (89%; four primary articles, four reviews). One primary article exclusively focused on patients suffering from depressive disorders (11%). None of the identified articles focused exclusively on patients with AD. Finally, two out of nine articles could not be allocated to a specific RDoC (sub-)construct. Hence, we reported the results on the domain level. All other cross-domain articles focused on the broad spectrum of PVS- and NVS (sub-) constructs.

With regards to factorial analytic studies, one article investigating the multimodal factorial structure underlying a broad test battery comprised of self-report, behavioral, and neuroimaging assessments to capture PVS and NVS functioning in patients with mood and anxiety disorder symptoms failed to identify a cross-modal latent structure and attributed this to challenges in the RDoC approach (Peng et al., 2021). However, Paulus et al. (2017) reported finding two independent “meta”-dimensions of PVS and NVS using a factorial analytic approach on self-report and behavioral data. Likewise focusing on self-report and behavioral units. Förstner et al. (2022) found a structure of four latent and transnosological factors (PVS, NVS, CS, and SP) using a confirmatory factor analysis (CFA) approach, although these factors were not cross-modal. Differential associations between PV and NV symptom scores and clinical impairment, antidepressant response, and inflammation-related immunomarkers were revealed in a sample of MDD patients by Medeiros et al. (2020). Specifically, PV symptoms were linked to higher cognitive and physical impairment, showed associations to a greater number of inflammatory markers, and were more responsive to treatment with antidepressants, while NV symptoms were linked to younger age and a higher rate of comorbid anxiety symptoms. Wenzel et al. (2022) investigated self-reported PVS and NVS functioning in perinatal women: Trait- and state-like NVS functioning (potential threat) as well as state-like PVS functioning (reward valuation) were linked to worse depressive symptoms, while trait- and state-like NVS functioning (potential threat) were also linked to higher anxiety scores. Therefore, Wenzel et al. (2022) suggested potential threat as a transdiagnostic feature of perinatal anxiety and depression, whereas reward valuation was suggested to be a disease- or symptom-specific feature of perinatal depression. Compared to healthy controls, individuals with MDD or BD showed no preferential processing of positive stimuli (PVS circuit), while NVS circuitry was more pronounced (Langenecker et al., 2014). PVS mechanisms may be more often investigated in BD and underutilized in MDD (Langenecker et al., 2014). In a meta-analysis of 226 fMRI studies, Janiri et al. (2020) identified transdiagnostic neural phenotypes that are characteristic of patients with mood, anxiety, and posttraumatic stress disorders: In particular, the authors describe clusters of hypoactivation in the inferior prefrontal cortex, the inferior parietal lobule, and the putamen as well as clusters of hyperactivation in the left amygdala/parahippocampal gyrus, the left thalamus, and the dorsal anterior cingulate cortex, supporting the hypothesis of transdiagnostic neuronal disease mechanisms. However, RDoC domains did not contribute differentially to these clusters, which points to the clusters being domain-independent. Regarding PVS- and NVS-circuits, transdiagnostic patterns of disrupted activity were identified in the ventrolateral, ventromedial and dorsomedial prefrontal cortex, the amygdala, and thalamo-cortical networks by McTeague et al. (2020) for MDD and AD, while they also found evidence for disease-specific aberrant activation for AD, BD, and MDD. One review investigating the molecular basis of PVS and NVS in mood and anxiety disorders identified abnormal glutamate activity related to PVS and NVS (Terbeck et al., 2015).

4. Discussion 4.1. Summary of evidence

Our scoping review aimed to explore the recent research activity on the RDoC PVS and NVS in mood and anxiety disorders. We identified 43 publications that investigated positive and negative valence in mood and anxiety disorders, utilizing various measures from a range of genetic, molecular, neuronal, physiological, behavioral, and self-report approaches. Primary articles chiefly employed self-report questionnaires and interviews, often in conjunction with behavioral data. Reviews frequently included results from the molecules, circuitry, and physiology units of analysis. The structural and functional imaging literature included in this review highlighted the essential role of specific cortical frontal brain structures and of certain subcortical limbic structures, such as the amygdala and the hippocampus, in impaired emotional processing among patients with mood and anxiety disorders. Both reward- and threat-related processing were investigated in terms of genetic and molecular aspects, underlying circuitry, physiological responses, observed behavior, and self-reported symptoms, with many articles examining relationships between multiple units of analysis. Transdiagnostic as well as diagnosis-specific anomalies could be demonstrated -inter alia- on the levels of protein expression, concentration of hormones and immunomarkers, neural activity in brain areas associated with salience and reward, HPA-axis activation, behavioral indicators like attentional bias and startle response, and self-reported reward and threat sensitivity. However, identifying cross-modal constructs to characterize PVS and NVS functioning has proven challenging, an issue that is exemplified by a number of factor analytic studies reporting a lack of coherence in latent structure between tasks and measurement levels. We identified one intervention study testing the effectiveness of Engage therapy, an approach to improve symptoms connected to the positive valence domain by targeting the neural mechanisms underlying disordered emotional processing in late-life depression.

Both depressive and anxiety disorders were actively studied in the context of NVS, with a particular emphasis on the subconstructs of acute, potential, and sustained threat for anxious symptoms and loss for depressive symptoms. As we only identified one review investigating NVS in bipolar disorders, our scoping review highlights the lack of primary articles on NVS research focused on BD. Additionally, the review underscores the scarcity of research on frustrative nonreward in general, a gap initially identified by Carcone and Ruocco (2017). However, these research gaps could also be due to limitations in the search strategy employed, i.e., not explicitly searching for frustrative nonreward. There was limited research on the psychopathology of anxiety disorders within the PVS. Findings were largely connected to anxiety-related NVS constructs that cut across different AD, revealing a distinction between fear- or phobic-based disorders from non-phobic anxiety disorders. While mood disorders were widely studied in regards to both PVS and NVS, the number of publications exploring the psychopathology of BD was considerably smaller than those for MDD.

In relation to the Tripartite Model of Anxiety and Depression proposed by Clark and Watson (1991), we focus on reporting three selected key findings. Observed diagnosis-specific modulations in startle responses, as a marker of acute threat (NVS), enable to distinguish between depressive and anxiety disorders (Vaidyanathan et al., 2012; Boecker and Pauli, 2019), while this subconstruct also showed transdiagnostic patterns in an fMRI setting (MacNamara et al., 2017). These results show that RDoC subconstructs such as acute threat can be an additional markers distinctive of AD, as is physiological hyperarousal in the Tripartite Model. Impaired hedonic experience, indicative of impaired reward responsiveness (PVS), has been identified as a useful marker (Nakonezny et al., 2015; Barch et al., 2016; Nusslock and Alloy, 2017; Trøstheim et al., 2020) for distinguishing depressive symptoms from other mood and anxiety disorder symptoms, which is consistent with Tripartite Model assumptions. The relationship between reward processing and depressive symptoms in the context of PVS (Nusslock et al., 2015; Nusslock and Alloy, 2017; Swope et al., 2020) may be complex and requires further investigation in future research, as reward responsiveness may serve as a more proximal marker for acute affective symptoms such as anhedonia rather than being a stable trait marker of patients with mood disorders (Langenecker et al., 2022).

The findings in our review align with the work of Carcone and Ruocco (2017), who stated that RDoC-related publications typically investigate a single construct using multiple units of analysis, examine relationships between constructs and/or elements, or apply a transdiagnostic approach to measure them. More recent reviews of RDoC research tend to adopt a diagnosis-focused approach. For instance, Wei and Roodenrys (2021) focused on anxiety-related research, and Tschida and Yerys (2021) pursued a combined domain and diagnosis approach to explore PVS in autism spectrum disorder. In comparison, in our review we pursued a more transnosological approach. The number of articles originating from outside the US has increased. This increasing number originating from outside the US suggests that the scientific community is increasingly embracing the dimensional research approach by integrating it into their research efforts in recent years (Carcone and Ruocco, 2017).

4.2. Limitations

This scoping review has some limitations. This review was not intended to provide a comprehensive overview of all research on PVS and NVS in mood and anxiety disorders. Rather, our search strategy was focused specifically on PVS and NVS domain level. Therefore, we did not conduct keyword searches for specific PVS and NVS constructs or subconstructs, which may have resulted in the exclusion of relevant publications. Another limitation lies in the exclusion of studies that did not provide a clear assignment of their research to specific RDoC constructs (e.g., BIS/BAS). This exclusion criterion is not completely objectifiable and therefore the current review we may have excluded single RDoC-related results. Of note, the present review included RDoC related articles that specifically focused on PVS and NVS on the domain level. The aim of this review was not to synthesize the entire literature on symptoms or constructs related to transdiagnostic or RDoC associated domains. Specifically, we focused on articles explicitly investigating PVS and NVS domains but did not search for all articles that for example investigated fear in mood and anxiety disorders. Therefore, the present review does not cover all transdiagnostic issues related to mood and anxiety disorder symptoms (e.g., Sindermann et al., 2021; van Tol et al., 2021), but reflects research from the last decade conceptualizing PVS and NVS on the domain level only. Given our primary aim was to conduct a scoping review of articles with a direct mention of the RDoC approach, we did not systematically include primary articles included in reviews or meta-analyses presented here, but extracted relevant RDoC information from these articles: Be it in relation to individual articles within the listed reviews/meta-analyses or be it of results or conclusions of the authors of these reviews/meta-analyses. While this approach may have hampered the generalizability and precision of our findings with respect to all available data, we would argue that we could therefore better present the current state of research with regard to RDoC research efforts, which is also in line with our main aim, with value-added information from reviews/meta-analyses that are themselves RDoC-related but whose primary articles would not have been selected based on our eligibility criteria. A further limitation arises from the NIMH's update of the PVS domain. We mapped articles from before 2017 to the revised PVS structure released by the NIMH in 2017. As a result, it is possible that some articles may have been mapped to the PVS domain differently than originally intended by the authors. An additional limitation may arise from the incorporation of heterogenous research studies. However, given the nature of this review we could not address heterogeneity on a quantitative level. Lastly, as no systematic review was conducted, there was no quality assessment of the included studies, which is an inherent limitation of a scoping review.

5. Conclusions

The RDoC initiative was proposed as a translational framework for psychopathology research with the goal of addressing issues related to symptom-based diagnostic categories by shifting emphasis to dimensions of human functioning defined by observable behavior as well as neurobiological indicators (Cuthbert, 2020). This scoping review shows that overall, mood and anxiety disorders are actively studied in the context of PVS and NVS within the RDoC framework. In line with the integrative approach of the RDoC initiative, psychological constructs related to mood and anxiety disorders were typically examined across different units of analysis, with the majority of publications incorporating two or more measures to capture multiple facets of dysregulated functioning. While molecular, genetic, and physiological aspects were mainly investigated via review articles analyzing large bodies of research through the lens of the RDoC framework, current primary articles focused on self-report, behavioral, and—to a lesser extent—physiological measures as well.

It is clear that the RDoC initiative is influencing the direction of research into diagnosis-specific as well as transdiagnostic features of mood and anxiety disorders. This trend is particularly evident in the US, although our review suggests that the RDoC framework is increasingly being adopted in other countries as well. A major challenge for future research will be the translation of RDoC-guided findings into clinical practice (Pacheco et al., 2022). In this regard, the present scoping review emphasizes the potential of further research into depressive and anxious symptomatology conducted within the RDoC framework to potentially catalyze the development of neuroscience-driven interventions that target PVS and NVS functioning in alignment with current advancements in precision medicine approaches to diagnosis, treatment, and prevention of mood and anxiety disorders.

Data availability statement

The original contributions presented in the study are included in the article/Supplementary material, further inquiries can be directed to the corresponding author.

Author contributions

SB, BF, MR, and MT contributed to the conception and design of the study. MT, MR, and KK-S mentored the research project. SB prepared the review, ran the database searches, organized the studies, created the tables and figure, and wrote the first draft of the manuscript. SB, BF, LS, and MT performed all steps of the review: screening, eligibility, data extraction, and synthesis of search results into the tables. All authors substantially contributed to manuscript revision, read, and approved the submitted version.

Funding

This work was supported by the Phenotypic, Diagnostic and Clinical Domain Assessment Network Germany (PDCAN) research consortium (FKZ 01EE1406I) within the German Research Network for Mental Disorders (Deutsches Forschungsnetz für psychische Erkrankungen) funded by the German Federal Ministry of Education and Research (https://www.bmbf.de).

Conflict of interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Publisher's note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

Supplementary material

The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fnhum.2023.1184978/full#supplementary-material

Abbreviations

AD, Anxiety disorder; BD, Bipolar disorder; MDD, Major depressive disorder; NIMH, National Institute of Mental Health; NV, Negative valence; NVS, Negative Valence Systems; PD-CAN, Phenotypic, Diagnostic and Clinical Domain Assessment Network Germany; PV, Positive valence; PVS, Positive Valence Systems; RDoC, Research Domain Criteria.

References

Alexopoulos, G. S., Raue, P. J., Gunning, F., Kiosses, D. N., Kanellopoulos, D., Pollari, C., et al. (2016). “Engage” therapy: Behavioral activation and improvement of late-life major depression. Am. J. Geriatr. Psychiatry 24, 320–326. doi: 10.1016/j.jagp.2015.11.006

PubMed Abstract | CrossRef Full Text | Google Scholar

Alexopoulos, G. S., Raue, P. J., Kiosses, D. N., Seirup, J. K., Banerjee, S., and Arean, P. A. (2015). Comparing engage with PST in late-life major depression: A preliminary report. Am. J. Geriatr. Psychiatry 23, 506–513. doi: 10.1016/j.jagp.2014.06.008

PubMed Abstract | CrossRef Full Text | Google Scholar

Arksey, H., and O'Malley, l. (2005). Scoping studies: Towards a methodological framework. Int. J. Soc. Res. Methodol. 8, 19–32. doi: 10.1080/1364557032000119616

CrossRef Full Text | Google Scholar

Barch, D. M., Pagliaccio, D., and luking, K. (2016). Mechanisms underlying motivational deficits in psychopathology: Similarities and differences in depression and schizophrenia. Curr. Top. Behav. Neurosci. 27, 411–449. doi: 10.1007/7854_2015_376

PubMed Abstract | CrossRef Full Text | Google Scholar

Baskin-Sommers, A. R., and Foti, D. (2015). Abnormal reward functioning across substance use disorders and major depressive disorder: Considering reward as a transdiagnostic mechanism. Int. J. Psychophysiol. 98, 227–239. doi: 10.1016/j.ijpsycho.2015.01.011

PubMed Abstract | CrossRef Full Text | Google Scholar

Boecker, L., and Pauli, P. (2019). Affective startle modulation and psychopathology: Implications for appetitive and defensive brain systems. Neurosci. Biobehav. Rev. 103, 230–266. doi: 10.1016/j.neubiorev.2019.05.019

PubMed Abstract | CrossRef Full Text | Google Scholar

Carcone, D., and Ruocco, A. C. (2017). Six years of research on the national institute of mental health's research domain criteria (RDoC) initiative: A systematic review. Front. Cell Neurosci. 11, 46. doi: 10.3389/fncel.2017.00046

PubMed Abstract | CrossRef Full Text | Google Scholar

Clark, L. A., Cuthbert, B., lewis-Fernández, R., Narrow, W. E., and Reed, G. M. (2017). Three approaches to understanding and classifying mental disorder: ICD-11, DSM-5, and the National Institute of Mental Health's Research Domain Criteria (RDoC). Psychol. Sci. Public Interest 18, 72–145. doi: 10.1177/1529100617727266

PubMed Abstract | CrossRef Full Text | Google Scholar

Clark, L. A., and Watson, D. (1991). Tripartite model of anxiety and depression: Psychometric evidence and taxonomic implications. J. Abnorm. Psychol. 100, 316–336. doi: 10.1037/0021-843X.100.3.316

PubMed Abstract | CrossRef Full Text | Google Scholar

Cochran, A. L., Pingeton, B. C., Goodman, S. H., laurent, H., Rathouz, P. J., Newport, D. J., et al. (2020). A transdiagnostic approach to conceptualizing depression across the perinatal period in a high-risk sample. J. Abnorm. Psychol. 129, 689–700. doi: 10.1037/abn0000612

PubMed Abstract | CrossRef Full Text | Google Scholar

Cuthbert, B. N. (2014). The RDoC framework: Facilitating transition from ICD/DSM to dimensional approaches that integrate neuroscience and psychopathology. World Psychiatry 13, 28–35. doi: 10.1002/wps.20087

PubMed Abstract | CrossRef Full Text

Cuthbert, B. N., and Insel, T. R. (2010). Toward new approaches to psychotic disorders: The NIMH Research Domain Criteria project. Schizophr. Bull. 36, 1061–1062. doi: 10.1093/schbul/sbq108

PubMed Abstract | CrossRef Full Text | Google Scholar

Ellingson, J. M., Richmond-Rakerd, L. S., Statham, D. J., Martin, N. G., and Slutske, W. S. (2016). Most of the genetic covariation between major depressive and alcohol use disorders is explained by trait measures of negative emotionality and behavioral control. Psychol. Med. 46, 2919–2930. doi: 10.1017/S0033291716001525

PubMed Abstract | CrossRef Full Text | Google Scholar

Ethridge, P., Freeman, C., Sandre, A., Banica, I., Dirks, M. A., and Weinberg, A. (2021). Intergenerational transmission of depression risk: Mothers' neural response to reward and history of depression are associated with daughters' neural response to reward across adolescence. J. Abnorm. Psychol. 2021, abn0000662. doi: 10.1037/abn0000662

PubMed Abstract | CrossRef Full Text | Google Scholar

Fettes, P., Schulze, L., and Downar, J. (2017). Cortico-striatal-thalamic loop circuits of the orbitofrontal cortex: Promising therapeutic targets in psychiatric illness. Front. Syst. Neurosci. 11, 25. doi: 10.3389/fnsys.2017.00025

PubMed Abstract | CrossRef Full Text | Google Scholar

Förstner, B. R., Tschorn, M., Reinoso-Schiller, N., Maričić, L. M., Röcher, E., Kalman, J. L., et al. (2022). Mapping Research Domain Criteria using a transdiagnostic mini-RDoC assessment in mental disorders: A confirmatory factor analysis. Eur. Arch. Psychiatry Clin. Neurosci. 22, 6. doi: 10.1007/s00406-022-01440-6

PubMed Abstract | CrossRef Full Text | Google Scholar

Gibb, B. E., McGeary, J. E., and Beevers, C. G. (2016). Attentional biases to emotional stimuli: Key components of the RDoC constructs of sustained threat and loss. Am. J. Med. Genet. B Neuropsychiatr. Genet. 171B, 65–80. doi: 10.1002/ajmg.b.32383

PubMed Abstract | CrossRef Full Text | Google Scholar

Gruber, J., Mennin, D. S., Fields, A., Purcell, A., and Murray, G. (2015). Heart rate variability as a potential indicator of positive valence system disturbance: A proof of concept investigation. Int. J. Psychophysiol. 98, 240–248. doi: 10.1016/j.ijpsycho.2015.08.005

PubMed Abstract | CrossRef Full Text | Google Scholar

Guineau, M. G., Ikani, N., Rinck, M., Collard, R. M., van Eijndhoven, P., Tendolkar, I., et al. (2022). Anhedonia as a transdiagnostic symptom across psychological disorders: A network approach. Psychol. Med. 2022, 1–12. doi: 10.1017/S0033291722000575

PubMed Abstract | CrossRef Full Text | Google Scholar

Gunzler, D., Sehgal, A. R., Kauffman, K., Davey, C. H., Dolata, J., Figueroa, M., et al. (2020). Identify depressive phenotypes by applying RDOC domains to the PHQ-9. Psychiatry Res. 286, 112872. doi: 10.1016/j.psychres.2020.112872

留言 (0)

沒有登入
gif