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1.
BMC Pregnancy Childbirth ; 24(1): 380, 2024 May 21.
Article in English | MEDLINE | ID: mdl-38773395

ABSTRACT

BACKGROUND: Globally, disrespectful, and abusive childbirth practices negatively impact women's health, create barriers to accessing health facilities, and contribute to poor birth experiences and adverse outcomes for both mothers and newborns. However, the degree to which disrespectful maternity care is associated with complications during childbirth is poorly understood, particularly in Ethiopia. AIM: To determine the extent to which disrespectful maternity care is associated with maternal and neonatal-related complications in central Ethiopia. METHODS: A multicentre cross-sectional study was conducted in the West Shewa Zone of Oromia, Ethiopia. The sample size was determined using the single population proportion formula. Participants (n = 440) were selected with a simple random sampling technique using computer-generated random numbers. Data were collected through face-to-face interviews with a pretested questionnaire and were entered into Epidata and subsequently exported to STATA version 17 for the final analysis. Analyses included descriptive statistics and binary logistic regression, with a 95% confidence interval (CI) and an odds ratio (OR) of 0.05. Co-founders were controlled by adjusting for maternal sociodemographic characteristics. The primary exposure was disrespectful maternity care; the main outcomes were maternal and neonatal-related complications. RESULTS: Disrespectful maternity care was reported by 344 women (78.2%) [95% CI: 74-82]. Complications were recorded in one-third of mothers (33.4%) and neonates (30%). Disrespectful maternity care was significantly associated with maternal (AOR = 2.22, 95% CI: 1.29, 3.8) and neonatal-related complications (AOR = 2.78, 95% CI: 1.54, 5.04). CONCLUSION: The World Health Organization advocates respectful maternal care during facility-based childbirth to improve the quality of care and outcomes. However, the findings of this study indicated high mistreatment and abuse during childbirth in central Ethiopia and a significant association between such mistreatment and the occurrence of both maternal and neonatal complications during childbirth. Therefore, healthcare professionals ought to prioritise respectful maternity care to achieve improved birth outcomes and alleviate mistreatment and abuse within the healthcare sector.


Subject(s)
Maternal Health Services , Humans , Female , Ethiopia , Cross-Sectional Studies , Adult , Pregnancy , Maternal Health Services/standards , Young Adult , Professional-Patient Relations , Parturition/psychology , Attitude of Health Personnel , Infant, Newborn , Delivery, Obstetric/psychology , Obstetric Labor Complications/psychology , Obstetric Labor Complications/epidemiology , Surveys and Questionnaires , Quality of Health Care
2.
Women Birth ; 37(3): 101597, 2024 May.
Article in English | MEDLINE | ID: mdl-38547549

ABSTRACT

PROBLEM: Gestational Diabetes Mellitus (GDM) is a complication of pregnancy which may exclude women from midwife-led models of care. BACKGROUND: There is a paucity of research evaluating the safety and feasibility of continuity of midwifery care (CoMC) for women with GDM. AIM: To investigate the impact of CoMC on maternal and neonatal outcomes, for otherwise low-risk women with GDM. METHODS: This exploratory cross-sectional study observed maternal and neonatal outcomes including onset of labour, augmentation, labour analgesia, mode of birth, perineal trauma, gestation at birth, shoulder dystocia, infant birth weight, neonatal feeding at discharge. FINDINGS: Participants were 287 otherwise low-risk pregnant women, who developed GDM, and either received CoMC (n=36) or standard hospital maternity care (non-CoMC) (n=251). Women with GDM who received CoMC were significantly more likely to experience an spontaneous onset of labour (OR 6.3; 95% CI 2.7-14.5; p<.001), labour without an epidural (OR 4.2; 95% CI 2.0 - 9.2,<0.001) and exclusively breastfeed (OR 4.3; 95% CI 1.26 - 14.32; p=0.02). DISCUSSION: Receiving CoMC may be a public health initiative which not only improves maternal and neonatal outcomes, but also long-term morbidity associated with GDM. CONCLUSION: Findings provide preliminary evidence suggesting CoMC improves maternal and neonatal outcomes and is likely a safe and viable option for otherwise low-risk women with GDM. Larger studies are recommended to confirm findings and explore the full impact of CoMC for women with GDM.


Subject(s)
Diabetes, Gestational , Maternal Health Services , Midwifery , Infant , Infant, Newborn , Pregnancy , Female , Humans , Cross-Sectional Studies , Cesarean Section
3.
Front Psychiatry ; 14: 1181785, 2023.
Article in English | MEDLINE | ID: mdl-37908596

ABSTRACT

Introduction: Emerging literature suggests that childhood trauma may influence facial emotion perception (FEP), with the potential to negatively bias both emotion perception and reactions to emotion-related inputs. Negative emotion perception biases are associated with a range of psychiatric and behavioral problems, potentially due or as a result of difficult social interactions. Unfortunately, there is a poor understanding of whether observed negative biases are related to childhood trauma history, depression history, or processes common to (and potentially causative of) both experiences. Methods: The present cross-sectional study examines the relation between FEP and neural activation during FEP with retrospectively reported childhood trauma in young adult participants with remitted major depressive disorder (rMDD, n = 41) and without psychiatric histories (healthy controls [HC], n = 34). Accuracy of emotion categorization and negative bias errors during FEP and brain activation were each measured during exposure to fearful, angry, happy, sad, and neutral faces. We examined participant behavioral and neural responses in relation to total reported severity of childhood abuse and neglect (assessed with the Childhood Trauma Questionnaire, CTQ). Results: Results corrected for multiple comparisons indicate that higher trauma scores were associated with greater likelihood of miscategorizing happy faces as angry. Activation in the right middle frontal gyrus (MFG) positively correlated with trauma scores when participants viewed faces that they correctly categorized as angry, fearful, sad, and happy. Discussion: Identifying the neural mechanisms by which childhood trauma and MDD may change facial emotion perception could inform targeted prevention efforts for MDD or related interpersonal difficulties.

4.
Midwifery ; 118: 103582, 2023 Mar.
Article in English | MEDLINE | ID: mdl-36584609

ABSTRACT

OBJECTIVE: Concepts of intrapartum risk are not well explored in the Australian context. In response to an increasing focus on risk in maternity care, we sought to obtain insight into what Australian midwives conceptualised as intrapartum risk. DESIGN: The research was conducted using a phenomenographic approach. Following ethical approval, in-depth semi-structured interviews were used to determine the qualitatively different ways midwives conceptualise intrapartum risk. SETTING: This project was undertaken across different midwifery practice settings in Australia. PARTICIPANTS: Australian midwives (n=14) with expertise in caring for women in the intrapartum period volunteered to participate in the study. FINDINGS: When discussing their experience of intrapartum risk, midwives focused on the external horizon of the woman as the risk, that included the internal horizons of being labelled as clinically high risk, working relationships within transdisciplinary risk and institutional risk. Risks were orientated toward the woman as well as to the midwives. KEY CONCLUSIONS: The midwives in this study conceptualised that intrapartum risk was associated with the woman including being labelled as high risk in addition to certain challenges within the midwife-woman relationship, particularly if there was a lack of reciprocal trust. IMPLICATIONS FOR PRACTICE: This study supports current evidence that improved collaborative professional relationships are integral to safety in maternity care. It reinforces continuity of midwifery care as important, and particularly as a way of mitigating intrapartum risk. Further research is required to inform what challenges experienced in the midwife-woman relationship contribute to concepts of risk.


Subject(s)
Maternal Health Services , Midwifery , Nurse Midwives , Female , Pregnancy , Humans , Australia , Trust , Qualitative Research
5.
BMJ Case Rep ; 15(7)2022 Jul 07.
Article in English | MEDLINE | ID: mdl-35798499

ABSTRACT

A woman in her early 30s in the 11 2/7 week of pregnancy was admitted with severe abdominal pain and emesis. One year prior, the patient had undergone hysteroscopic adhesiolysis to treat Asherman syndrome resulting from a prior pregnancy. Examination of the patient revealed a haemoperitoneum and an intact intrauterine pregnancy. Laparoscopic adhesiolysis and haemostasis was performed and the patient was transferred to the intensive care unit. Subsequent examination due to persistent abdominal pain revealed an occult iatrogenic perforation of the uterus and placenta percreta with spontaneous uterine rupture. Although treatment for placenta percreta has generally been hysterectomy, in this case, the rupture and perforation sites were resected, representing successful fertility preserving management for this oft-overlooked pregnancy complication.


Subject(s)
Placenta Accreta , Uterine Rupture , Abdominal Pain/etiology , Female , Hemoperitoneum/etiology , Hemoperitoneum/surgery , Humans , Hysterectomy/adverse effects , Placenta Accreta/diagnosis , Placenta Accreta/surgery , Pregnancy , Pregnancy Trimester, First , Rupture, Spontaneous/surgery , Sutures/adverse effects , Uterine Artery , Uterine Rupture/diagnosis , Uterine Rupture/etiology , Uterine Rupture/surgery , Uterus/surgery
6.
Schizophr Bull ; 48(2): 437-446, 2022 03 01.
Article in English | MEDLINE | ID: mdl-34581411

ABSTRACT

Obstructive sleep apnea (OSA) is a highly prevalent condition in people living with schizophrenia or other psychotic disorder. Its treatment with continuous positive airway pressure therapy (CPAP) can dramatically improve daytime and physical health function. People with a psychotic disorder, however, are rarely diagnosed and treated and there are no large-scale studies showing evidence of successful treatment with CPAP. Using a retrospective case-control study approach (N = 554), we examined adherence to and effectiveness of a CPAP trial in individuals with comorbid psychotic disorder and OSA (psychosis group, n = 165) referred for a CPAP trial at the West Australian Sleep Disorders Research Institute. Given that antipsychotic medication is an important confounder, we included a psychiatric (non-psychosis) comparison group taking antipsychotic medication (antipsychotic group, n = 82), as well as a nonpsychiatric control group (OSA control group, n = 307) also diagnosed with OSA and referred for CPAP. Variables included OSA symptom response, CPAP engagement, and usage at 3 months. The Psychosis group had the most severe OSA at baseline and they attended fewer clinic appointments overall. However, there were no other group differences either in CPAP adherence or treatment response. CPAP was equally effective in normalizing OSA symptoms and daytime sleepiness in all groups. CPAP usage was longer per night in the Psychosis and Antipsychotic groups, perhaps suggesting a role of sedation from antipsychotic medications. In conclusion, OSA is treatable and CPAP feasible in people with severe mental illness and antipsychotic medications are not a barrier to treatment response.


Subject(s)
Continuous Positive Airway Pressure/methods , Sleep Apnea, Obstructive/therapy , Adult , Aged , Aged, 80 and over , Analysis of Variance , Case-Control Studies , Continuous Positive Airway Pressure/instrumentation , Continuous Positive Airway Pressure/statistics & numerical data , Female , Humans , Male , Middle Aged , Retrospective Studies , Schizophrenia/epidemiology , Schizophrenia/therapy , Sleep Apnea, Obstructive/epidemiology , Sleep Apnea, Obstructive/physiopathology , Western Australia/epidemiology
7.
Physiother Res Int ; 27(1): e1927, 2022 Jan.
Article in English | MEDLINE | ID: mdl-34706135

ABSTRACT

BACKGROUND AND PURPOSE: Low back pain (LBP)-related misbeliefs are known to be among risk factors for LBP chronification and for persistence of chronic pain. The main objective of this study was to investigate the current LBP-related beliefs in the general population in Belgium, considering the fact that the last survey in Belgium about the topic was conducted more than 15 years ago. METHODS: A cross-sectional study design was used. Belgian adults (>17 years old) were recruited in the three regions of the country by means of non-probabilistic recruitment methods. Participants were invited to fill in a battery of questionnaires including demographic questions as well as questions about their LBP history and the LBP Beliefs Questionnaire (LBPBQ). RESULTS: A total of 3724 individuals participated in the study. The LBPBQ scores indicated several LBP-related misbeliefs. About 15%-25% of participants still think that imaging tests can always identify the cause of pain and that bed rest is the mainstay of therapy. The majority of the participants think that "unnecessary" movements should be avoided when having LBP (58% of the respondents), and that they should "take it easy" until the pain goes away (69%). Most respondents also had maladaptive/wrong expectations, for example, a systematic worsening with time (65%) and a need for surgery in case of disc herniation (54%). CONCLUSIONS: The present study suggests that in 2020 several LBP-related misbeliefs are still current in Belgium, particularly regarding the vulnerability of the spine. Therefore, further efforts to improve LBP-related beliefs/knowledge in the general population are necessary.


Subject(s)
Chronic Pain , Low Back Pain , Adolescent , Adult , Belgium/epidemiology , Chronic Pain/epidemiology , Cross-Sectional Studies , Humans , Low Back Pain/epidemiology , Surveys and Questionnaires
8.
Australas Psychiatry ; 29(1): 80-87, 2021 02.
Article in English | MEDLINE | ID: mdl-33181029

ABSTRACT

OBJECTIVE: Ketamine is a potential rapid-acting treatment for depression. Studies have suggested that the side effects are minimal and temporary, but the psychotic symptom side effects have yet to be fully examined. This study investigated whether ketamine infusion in the treatment of mood disorders is associated with increases in positive symptoms and whether these symptom effects endure over time. METHODS: A systematic review and meta-analysis of studies of ketamine in the treatment of depression. Embase and Medline databases were searched for studies including (a) participants with major affective disorders, (b) 0.4 or 0.5 mg intravenously administered ketamine, (c) measurement of positive symptoms using BPRS+, and (d) a within-subject repeated-measures design with participants serving as their own baseline. RESULTS: Seventeen studies met the inclusion criteria, comprising 458 participants. The meta-analyses examined symptom change occurring within the first 4 h, after 1 day, and after 3 days. Results showed significant BPRS+ increases within the first 30-60 min in 72% of studies, followed by a return to baseline levels. CONCLUSION: Peak symptom change occurred within the first hour post infusion. There are limited data to determine if ketamine is safe in the longer term, but there were no indications that psychotic symptoms re-occurred after the first hour and in the days following administration.


Subject(s)
Depressive Disorder, Major , Ketamine , Humans , Ketamine/adverse effects
9.
BMC Pregnancy Childbirth ; 19(1): 140, 2019 Apr 27.
Article in English | MEDLINE | ID: mdl-31029115

ABSTRACT

BACKGROUND: Previous research examining the birth of the placenta has focussed on quantitative outcomes comparing active and expectant (physiological) management. However, it is also important to understand women's experiences of birthing the placenta. METHODS: The participant group consisted of 11 women who had expectant management, eight who had active management and one who was unsure. Participants were interviewed in-depth and the data analysed using thematic analysis. RESULTS: Seven themes were identified in the data relating to before, during and after the birth of the placenta. Before birth themes focused on making decisions and included 'doing the research' and 'natural birth'. During the birth of the placenta themes were 'boundaries of time', 'focusing on baby' and 'sensations'. After the birth themes consisted of 'looking' and 'keeping'. CONCLUSION: Most of the women considered a physiological birth of the placenta to be an intrinsic element of natural birth. Active management was considered to be an intervention used if complications occurred. In contrast, women who chose active management did not consider the placenta to be an important element of natural birth, and chose active management in order to prevent complications. Decisions about birthing the placenta were informed by Internet sources and previous personal experiences rather than care providers. During the birth of the placenta care providers managed the boundaries of time whilst women focused on their baby. The sensations women described were consistent across both types of management. Women valued seeing their placenta and having the opportunity to keep it, and placenta encapsulation was popular. The findings of this study contribute the experiences of women to the body of knowledge informing practice during the birth of the placenta.


Subject(s)
Decision Making , Natural Childbirth , Parturition , Placenta , Australia , Delivery, Obstetric , Female , Humans , Pregnancy
10.
J Fam Psychol ; 32(7): 926-935, 2018 Oct.
Article in English | MEDLINE | ID: mdl-30188156

ABSTRACT

The current study sought to test the role of family support as a buffer of life stress for depressive symptoms in a sample of young adults at low- and high-risk for depression based on a previous history of depression. Ninety-seven young adults, 54 with remitted depression and 43 without prior history of depression, completed reports of family relationships, disruptive life events, and depressive symptoms at baseline and every 2 months for 10 months. Results revealed significant interactions between family environment and life events predicting Beck Depressive Inventory (BDI) scores at baseline, such that individuals with better family support were buffered from risk associated with life stress, and this was true even after accounting for a previous history of depression. Longitudinal analyses utilizing the Patient Health Questionnaire-9 (PHQ-9) as a depressive symptom measure did not find significant associations with family environment, but did find that more stressful events at baseline were associated with increasing levels of symptoms over time. Exploratory analyses suggest that discrepant findings for baseline versus longitudinal analyses may be due to differences in symptom measurement and to associations between family environment and cognitive features of depression. These findings provide qualified support for the continued relevance of families as stress buffers in young adulthood across a spectrum of risk for depression. (PsycINFO Database Record (c) 2018 APA, all rights reserved).


Subject(s)
Depressive Disorder/psychology , Family/psychology , Social Support , Stress, Psychological/psychology , Adolescent , Adult , Female , Humans , Interpersonal Relations , Longitudinal Studies , Male , United States , Young Adult
11.
Early Interv Psychiatry ; 11(5): 383-392, 2017 10.
Article in English | MEDLINE | ID: mdl-26177674

ABSTRACT

AIM: Impairment in neuropsychological functioning is common in major depressive disorder (MDD), but it is not clear to what degree these deficits are related to risk (e.g. trait), scar, burden or state effects of MDD. The objective of this study was to use neuropsychological measures, with factor scores in verbal fluency, processing speed, attention, set-shifting and cognitive control in a unique population of young, remitted, unmedicated, early course individuals with a history of MDD in hopes of identifying putative trait markers of MDD. METHODS: Youth aged 18-23 in remission from MDD (rMDD; n = 62) and healthy controls (HC; n = 43) were assessed with neuropsychological tests at two time points. These were from four domains of executive functioning, consistent with previous literature as impaired in MDD: verbal fluency and processing speed, conceptual reasoning and set-shifting, processing speed with interference resolution, and cognitive control. RESULTS: rMDD youth performed comparably to HCs on verbal fluency and processing speed, processing speed with interference resolution, and conceptual reasoning and set-shifting, reliably over time. Individuals with rMDD demonstrated relative decrements in cognitive control at Time 1, with greater stability than HC participants. CONCLUSION: MDD may be characterized by regulatory difficulties that do not pertain specifically to active mood state or fluctuations in symptoms. Deficient cognitive control may represent a trait vulnerability or early course scar of MDD that may prove a viable target for secondary prevention or early remediation.


Subject(s)
Cognition Disorders/psychology , Depressive Disorder, Major/psychology , Adolescent , Adult , Attention , Case-Control Studies , Cognition Disorders/diagnosis , Cognition Disorders/physiopathology , Depressive Disorder, Major/diagnosis , Depressive Disorder, Major/physiopathology , Executive Function , Female , Humans , Male , Neuropsychological Tests , Young Adult
12.
Depress Anxiety ; 33(10): 967-977, 2016 10.
Article in English | MEDLINE | ID: mdl-27454009

ABSTRACT

BACKGROUND: Major Depressive Disorder (MDD) and anxiety disorders often co-occur, with poorer treatment response and long-term outcomes. However, little is known about the shared and distinct neural mechanisms of comorbid MDD and anxiety (MDD+Anx). This study examined how MDD and MDD+Anx differentially impact cognitive control. METHODS: Eighteen MDD, 29 MDD+Anx, and 54 healthy controls (HC) completed the Parametric Go/No-Go (PGNG) during fMRI, including Target, Commission, and Rejection trials. RESULTS: MDD+Anx had more activation in the anterior dorsolateral prefrontal cortex, hippocampus, and caudate during Rejections, and inferior parietal lobule during correct Targets than MDD and HC. During Rejections HC had greater activation in a number of cognitive control regions compared to MDD; in the posterior cingulate compared to MDD+Anx; and in the fusiform gyrus compared to all MDD. During Commissions HC had greater activation in the right inferior frontal gyrus than all MDD. MDD had more activation in the mid-cingulate, inferior parietal lobule, and superior temporal gyrus than MDD+Anx during Commissions. CONCLUSIONS: Despite similar performance, MDD and MDD+Anx showed distinct differences in neural mechanisms of cognitive control in relation to each other, as well as some shared differences in relation to HC. The results were consistent with our hypothesis of hypervigilance in MDD+Anx within the cognitive control network, but inconsistent with our hypothesis that there would be greater engagement of salience and emotion network regions. Comorbidity of depression and anxiety may cause increased heterogeneity in study samples, requiring further specificity in detection and measurement of intermediate phenotypes and treatment Targets.


Subject(s)
Anxiety Disorders/diagnosis , Anxiety Disorders/physiopathology , Brain/physiopathology , Cognition/physiology , Depressive Disorder, Major/diagnosis , Depressive Disorder, Major/physiopathology , Nerve Net/physiopathology , Adult , Anxiety Disorders/psychology , Arousal/physiology , Brain Mapping , Comorbidity , Depressive Disorder, Major/psychology , Female , Humans , Magnetic Resonance Imaging , Male , Middle Aged , Neuropsychological Tests
13.
J Int Neuropsychol Soc ; 22(4): 412-25, 2016 Apr.
Article in English | MEDLINE | ID: mdl-26831638

ABSTRACT

OBJECTIVES: Individuals with major depressive disorder (MDD) demonstrate poorer learning and memory skills relative to never-depressed comparisons (NDC). Previous studies report decreased volume and disrupted function of frontal lobes and hippocampi in MDD during memory challenge. However, it has been difficult to dissociate contributions of short-term memory and executive functioning to memory difficulties from those that might be attributable to long-term memory deficits. METHODS: Adult males (MDD, n=19; NDC, n=22) and females (MDD, n=23; NDC, n=19) performed the Semantic List Learning Task (SLLT) during functional magnetic resonance imaging. The SLLT Encoding condition consists of 15 lists, each containing 14 words. After each list, a Distractor condition occurs, followed by cued Silent Rehearsal instructions. Post-scan recall and recognition were collected. Groups were compared using block (Encoding-Silent Rehearsal) and event-related (Words Recalled) models. RESULTS: MDD displayed lower recall relative to NDC. NDC displayed greater activation in several temporal, frontal, and parietal regions, for both Encoding-Silent Rehearsal and the Words Recalled analyses. Groups also differed in activation patterns in regions of the Papez circuit in planned analyses. The majority of activation differences were not related to performance, presence of medications, presence of comorbid anxiety disorder, or decreased gray matter volume in MDD. CONCLUSIONS: Adults with MDD exhibit memory difficulties during a task designed to reduce the contribution of individual variability from short-term memory and executive functioning processes, parallel with decreased activation in memory and executive functioning circuits. Ecologically valid long-term memory tasks are imperative for uncovering neural correlates of memory performance deficits in adults with MDD.


Subject(s)
Association Learning/physiology , Cerebral Cortex/diagnostic imaging , Cues , Depressive Disorder, Major/complications , Depressive Disorder, Major/pathology , Learning Disabilities/etiology , Limbic System/diagnostic imaging , Semantics , Adolescent , Adult , Aged , Analysis of Variance , Brain Mapping , Depressive Disorder, Major/diagnostic imaging , Female , Humans , Image Processing, Computer-Assisted , Learning Disabilities/diagnostic imaging , Magnetic Resonance Imaging , Male , Memory Disorders/diagnostic imaging , Memory Disorders/etiology , Middle Aged , Neuropsychological Tests , Young Adult
14.
Soc Cogn Affect Neurosci ; 11(5): 736-45, 2016 05.
Article in English | MEDLINE | ID: mdl-26714574

ABSTRACT

We present neuroimaging markers of the remitted state of major depressive disorder (rMDD) during facial emotion perception in 84 individuals during fMRI. Participants comprised 47 individuals (aged 18-23) diagnosed with rMDD and 37 healthy controls (HCs). Participants classified emotional faces or animals (control condition) in the Facial Emotion Perception Test (FEPT) during fMRI. Behavioural performance on the FEPT did not differ significantly between groups. During fMRI, both groups demonstrated significant blood oxygen level-dependent (BOLD) activity in bilateral inferior frontal gyri for the faces minus animals (F-A) contrast. The rMDD group additionally showed BOLD activity during F-A in numerous regions, including the bilateral paracingulate gyri, middle temporal gyri and right amygdala. The rMDD group exhibited significantly greater activity than the HC group in regions including the bilateral middle temporal gyri and left superior frontal gyrus. Although the rMDD group did not manifest the behavioural performance deficits on facial emotion recognition tasks that have been observed in actively depressed individuals, the rMDD group nevertheless showed increased BOLD activity compared with never-depressed controls during F-A in multiple posterior brain regions, suggesting that persistent effects of illness or possible trait vulnerabilities may distinguish individuals with rMDD from never-depressed controls.


Subject(s)
Amygdala/physiopathology , Brain Mapping/methods , Cerebral Cortex/physiopathology , Depressive Disorder, Major/physiopathology , Emotions/physiology , Facial Expression , Social Perception , Adolescent , Adult , Female , Humans , Magnetic Resonance Imaging/methods , Male , Remission Induction , Young Adult
15.
Psychiatry Res ; 230(1): 56-64, 2015 Nov 30.
Article in English | MEDLINE | ID: mdl-26319737

ABSTRACT

Anhedonia, the diminished anticipation and pursuit of reward, is a core symptom of major depressive disorder (MDD). Trait behavioral activation (BA), as a proxy for anhedonia, and behavioral inhibition (BI) may moderate the relationship between MDD and reward-seeking. The present studies probed for reward learning deficits, potentially due to aberrant BA and/or BI, in active or remitted MDD individuals compared to healthy controls (HC). Active MDD (Study 1) and remitted MDD (Study 2) participants completed the modified monetary incentive delay task (mMIDT), a behavioral reward-seeking task whose response window parameters were individually titrated to theoretically elicit equivalent accuracy between groups. Participants completed the BI Scale and BA Reward-Responsiveness and Drive Scales. Despite individual titration, active MDD participants won significantly less money than HCs. Higher Reward-Responsiveness scores predicted more won; Drive and BI were not predictive. Remitted MDD participants' performance did not differ from controls', and trait BA and BI measures did not predict r-MDD performance. These results suggest that diminished reward-responsiveness may contribute to decreased motivation and reward pursuit during active MDD, but that reward learning is intact in remission. Understanding individual reward processing deficits in MDD may inform personalized intervention addressing anhedonia and motivation deficits in select MDD patients.


Subject(s)
Anhedonia , Depressive Disorder, Major/psychology , Learning , Personality , Reward , Adult , Anhedonia/physiology , Depressive Disorder, Major/diagnosis , Female , Humans , Learning/physiology , Male , Middle Aged , Mood Disorders/diagnosis , Mood Disorders/psychology , Motivation , Personality/physiology , Predictive Value of Tests , Reaction Time/physiology , Young Adult
16.
Brain ; 138(Pt 5): 1424-34, 2015 May.
Article in English | MEDLINE | ID: mdl-25818869

ABSTRACT

Major depressive disorder and bipolar disorder share symptoms that may reflect core mood disorder features. This has led to the pursuit of intermediate phenotypes and a dimensional approach to understand neurobiological disruptions in mood disorders. Executive dysfunction, including cognitive control, may represent a promising intermediate phenotype across major depressive disorder and bipolar disorder. This study examined dimensions of cognitive control in women with major depressive disorder or bipolar disorder in comparison to healthy control subjects using two separate, consecutive experiments. For Experiment 1, participants completed a behavioural cognitive control task (healthy controls = 150, major depressive disorder = 260, bipolar disorder = 202; age range 17-84 years). A sample of those participants (healthy controls = 17, major depressive disorder = 19, and bipolar disorder = 16) completed a similar cognitive control task in an event-related design functional magnetic resonance imaging protocol for Experiment 2. Results for Experiment 1 showed greater impairments on the cognitive control task in patients with mood disorders relative to healthy controls (P < 0.001), with more of those in the mood disorder group falling into the 'impaired' range when using clinical cut-offs (<5th percentile). Experiment 2 revealed only a few areas of shared activation differences in mood disorder greater than healthy controls. Activation analyses using performance as a regressor, irrespective of diagnosis, revealed within and extra-network areas that were more active in poor performers. In summary, performance and activation during cognitive control tasks may represent an intermediate phenotype for mood disorders. However, cognitive control dysfunction is not uniform across women with mood disorders, and activation is linked to performance more so than disease. These findings support subtype and dimensional approaches to understanding risk and expression of mood disorders and are a promising area of inquiry, in line with the Research Domain Criteria initiative of NIMH.


Subject(s)
Bipolar Disorder/physiopathology , Brain/pathology , Cognition Disorders/physiopathology , Cognition/physiology , Depressive Disorder, Major/physiopathology , Adolescent , Adult , Aged , Aged, 80 and over , Bipolar Disorder/diagnosis , Brain/physiopathology , Cognition Disorders/diagnosis , Depressive Disorder, Major/diagnosis , Diagnostic and Statistical Manual of Mental Disorders , Female , Humans , Middle Aged , Neuropsychological Tests , Young Adult
17.
PLoS One ; 9(8): e104366, 2014.
Article in English | MEDLINE | ID: mdl-25162661

ABSTRACT

OBJECTIVE: Functional connectivity MRI (fcMRI) studies of individuals currently diagnosed with major depressive disorder (MDD) document hyperconnectivities within the default mode network (DMN) and between the DMN and salience networks (SN) with regions of the cognitive control network (CCN). Studies of individuals in the remitted state are needed to address whether effects derive from trait, and not state or chronic burden features of MDD. METHOD: fcMRI data from two 3.0 Tesla GE scanners were collected from 30 unmedicated (47% medication naïve) youth (aged 18-23, modal depressive episodes = 1, mean age of onset = 16.2, SD = 2.6) with remitted MDD (rMDD; modal years well = 4) and compared with data from 23 healthy controls (HCs) using four bilateral seeds in the DMN and SN (posterior cingulate cortex (PCC), subgenual anterior cingulate (sgACC), and amygdala), followed by voxel-based comparisons of the whole brain. RESULTS: Compared to HCs, rMDD youth exhibited hyperconnectivities from both PCC and sgACC seeds with lateral, parietal, and frontal regions of the CCN, extending to the dorsal medial wall. A factor analysis reduced extracted data and a PCC factor was inversely correlated with rumination among rMDD youth. Two factors from the sgACC hyperconnectivity clusters were related to performance in cognitive control on a Go/NoGo task, one positively and one inversely. CONCLUSIONS: Findings document hyperconnectivities of the DMN and SN with the CCN (BA 8/10), which were related to rumination and sustained attention. Given these cognitive markers are known predictors of response and relapse, hyperconnectivities may increase relapse risk or represent compensatory mechanisms.


Subject(s)
Amygdala/physiopathology , Attention , Cognition , Depressive Disorder, Major/physiopathology , Gyrus Cinguli/physiopathology , Adolescent , Amygdala/pathology , Brain Mapping , Case-Control Studies , Depressive Disorder, Major/pathology , Female , Gyrus Cinguli/pathology , Humans , Magnetic Resonance Imaging , Male , Mastication , Neural Pathways , Young Adult
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