Enhancing mass production of Heterorhabditis bacteriophora: influence of different bacterial symbionts (Photorhabdus spp.) and inoculum age on dauer juvenile recovery.

The entomopathogenic nematode Heterorhabditis bacteriophora (Nematoda: Rhabditidae) is used in biological insect control. Their dauer juveniles (DJs) are free-living and developmentally arrested, invading host insects. They carry cells of their bacterial symbiont Photorhabdus spp. in the intestine. Once inside the insect´s hemolymph the DJs perceive a food signal, triggering them to exit the DJ stage and regurgitate the Photorhabdus cells into the insect's haemocoel, which kill the host and later provide essential nutrients for nematode reproduction. The exit from the DJ stage is called "recovery". For commercial pest control, nematodes are industrially produced in monoxenic liquid cultures. Artificial media are incubated with Photorhabdus before DJs are added. In absence of the insect's food signal, DJs depend on unknown bacterial food signals to trigger exit of the DJ stage. A synchronized and high DJ recovery determines the success of the industrial in vitro production and can significantly vary between nematode strains, inbred lines and mutants. In this study, fourteen bacterial strains from H. bacteriophora were isolated and identified as P. laumondii, P. kayaii and P. thracensis. Although the influence of bacterial supernatants on the DJ recovery of three inbred lines and two mutants differed significantly, the bacterial impact on recovery has a subordinate role whereas nematode factors have a superior influence. Recovery of inbred lines decreased with age of the DJs. One mutant (M31) had very high recovery in bacterial supernatant and spontaneous recovery in Ringer solution. Another mutant (M88) was recovery defective.

Mechanisms of action for stigma reduction among primary care providers following social contact with service users and aspirational figures in Nepal: an explanatory qualitative design.

BACKGROUND: There are increasing initiatives to reduce mental illness stigma among primary care providers (PCPs) being trained in mental health services. However, there is a gap in understanding how stigma reduction initiatives for PCPs produce changes in attitudes and clinical practices. We conducted a pilot randomized controlled trial of a stigma reduction intervention in Nepal: REducing Stigma among HealthcAre Providers (RESHAPE). In a previous analysis of this pilot, we described differences in stigmatizing attitudes and clinical behaviors between PCPs receiving a standard mental health training (mental health Gap Action Program, mhGAP) vs. those receiving an mhGAP plus RESHAPE training. The goal of this analysis is to use qualitative interview data to explain the quantitative differences in stigma outcomes identified between the trial arms. METHODS: PCPs were randomized to either standard mental health training using mhGAP led by mental health specialists or the experimental condition (RESHAPE) in which service users living with mental illness shared photographic recovery narratives and participated in facilitated social contact. Qualitative interviews were conducted with PCPs five months post-training (n = 8, standard mhGAP training; n = 20, RESHAPE). Stigmatizing attitudes and clinical practices before and after training were qualitatively explored to identify mechanisms of change. RESULTS: PCPs in both training arms described changes in knowledge, skills, and confidence in providing mental healthcare. PCPs in both arms described a positive feedback loop, in which discussing mental health with patients encouraged more patients to seek treatment and open up about their illness, which demonstrated for PCPs that mental illness can be treated and boosted their clinical confidence. Importantly, PCPs in the RESHAPE arm were more likely to describe a willingness to treat mental health patients and attributed this in part to social contact with service users during the training. CONCLUSIONS: Our qualitative research identified testable mechanisms of action for stigma reduction and improving clinical behavior: specifically, recovery stories from service users and social engagement led to greater willingness to engage with patients about mental illness, triggering a feedback loop of more positive experiences with patients who benefit from mental healthcare, which further reinforces willingness to deliver mental healthcare. Trial registration ClinicalTrials.gov identifier, NCT02793271.

Collaboration With People With Lived Experience of Mental Illness to Reduce Stigma and Improve Primary Care Services: A Pilot Cluster Randomized Clinical Trial.

Importance: Collaboration with people with lived experience of mental illness (PWLE), also referred to as service users, is a growing priority to reduce stigma and improve mental health care. Objective: To examine feasibility and acceptability of conducting an antistigma intervention in collaboration with PWLE during mental health training of primary care practitioners (PCPs). Design, Setting, and Participants: This pilot cluster randomized clinical trial was conducted from February 7, 2016, to August 10, 2018, with assessors, PCPs, and patients blinded to group assignment. The participants were PCPs and primary care patients diagnosed with depression, psychosis, or alcohol use disorder at primary care facilities (the cluster unit of randomization) in Nepal. Statistical analysis was performed from February 2020 to February 2021. Interventions: In the control group, PCPs were trained on the World Health Organization Mental Health Gap Action Programme-Intervention Guide (mhGAP-IG). In the Reducing Stigma Among Healthcare Providers (RESHAPE) group, the mhGAP-IG trainings for PCPs were cofacilitated by PWLE who presented recovery testimonials through photographic narratives. Main Outcomes and Measures: Prespecified feasibility and acceptability measures were adequacy of randomization, retention rates, intervention fidelity, data missingness, and safety. Outcome measures for PCPs included the Social Distance Scale (SDS), accuracy of diagnoses of mental illness in standardized role-plays using the Enhancing Assessment of Common Therapeutic factors tool (ENACT), and accuracy of diagnosis with actual patients. The primary end point was 16 months posttraining. Results: Among the overall sample of 88 PCPs, 75 (85.2%) were men and 67 (76.1%) were upper caste Hindus; the mean (SD) age was 36.2 (8.8) years. Nine of the PCPs (10.2%) were physicians, whereas the remaining 79 PCPs (89.8%) were health assistants or auxiliary health workers. Thirty-four facilities were randomized to RESHAPE or the control group. All eligible PCPs participated: 43 in RESHAPE and 45 in the control group, with 76.7% (n = 33) and 73.3% (n = 33) retention at end line, respectively. Due to PCP dropout, 29 facilities (85.3%) were included in end line analysis. Of 15 PWLE trained as cofacilitators, 11 (73.3%) participated throughout the 3 months of PCP trainings. Among PCPs, mean SDS changes from pretraining to 16 months were -10.6 points (95% CI, -14.5 to -6.74 points) in RESHAPE and -2.79 points (-8.29 to 2.70 points) in the control group. Role-play-based diagnoses with ENACT were 78.1% (25 of 32) accurate in RESHAPE and 66.7% (22 of 33) in the control group. Patient diagnoses were 72.5% (29 of 40) accurate by PCPs in RESHAPE compared with 34.5% (10 of 29) by PCPs in the control group. There were no serious adverse events. Conclusions and Relevance: This pilot cluster randomized clinical trial found that procedures were feasible and acceptable for PCPs to be trained by PWLE. These pilot results will help inform a full trial to evaluate benefits of collaboration with PWLE during training of PCPs to reduce stigma and improve diagnostic accuracy. Trial Registration: ClinicalTrials.gov Identifier: NCT02793271.

Reducing mental illness stigma in healthcare settings: Proof of concept for a social contact intervention to address what matters most for primary care providers.

Initiatives for integration of mental health services into primary care are underway through the World Health Organization's mental health Gap Action Programme (mhGAP) and related endeavors. However, primary healthcare providers' stigma against persons with mental illness is a barrier to success of these programs. Therefore, interventions are needed to reduce stigma among primary healthcare providers. We developed REducing Stigma among HealthcAre ProvidErs (RESHAPE), a theoretically-grounded intervention that draws upon the medical anthropology conceptual framework of "what matters most." RESHAPE addresses three domains of threats to what matters most: survival, social, and professional. In a proof-of-concept study, mental health service users and aspirational healthcare providers (primary healthcare providers actively incorporating mental health services) were trained to co-facilitate the RESHAPE intervention embedded within mhGAP training in Nepal. Two trainings with the RESHAPE anti-stigma component were held with 41 primary healthcare providers in Nepal. Evaluation of the training included four focus groups and 25 key informant interviews. Stigmatizing attitudes and role play-based clinical competency, assessed with the ENhancing Assessment of Common Therapeutic factors tool (ENACT), were evaluated pre-training and followed-up at four and 16 months. The study was conducted from February 2016 through June 2017. In qualitative interviews, primary healthcare providers described changes in perceptions of violence (survival threats) and the ability to treat mental illness effectively (professional threats). Willingness to interact with a person with mental illness increased from 54% pre-training to 81% at 16 months. Observed clinical competency increased from 49% pre-training to 93% at 16-months. This proof-of-concept study supports reducing stigma by addressing what matters most to healthcare providers, predominantly through mitigating survival and professional threats. Additional efforts are needed to address social threats. These findings support further exploration of service user and aspirational figure involvement in mhGAP trainings based on a "what matters most" conceptual framework.

A service user co-facilitated intervention to reduce mental illness stigma among primary healthcare workers: Utilizing perspectives of family members and caregivers.

INTRODUCTION: Service users' involvement as cofacilitators of mental health trainings is a nascent endeavor in low- and middle-income countries, and the role of families on service user participation in trainings has received limited attention. This study examined how caregivers perceive and facilitate service user's involvement in an antistigma program that was added to mental health Gap Action Program (mhGAP) trainings for primary care workers in Nepal. METHOD: Service users were trained as cofacilitators for antistigma and mhGAP trainings delivered to primary care workers through the REducing Stigma among HealthcAre ProvidErs (RESHAPE) program. Key informant interviews (n = 17) were conducted with caregivers and service users in RESHAPE. RESULTS: Five themes emerged: (a) Caregivers' perceived benefits of service user involvement included reduced caregiver burden, learning new skills, and opportunities to develop support groups. (b) Caregivers' fear of worsening stigma impeded RESHAPE participation. (c) Lack of trust between caregivers and service users jeopardized participation, but it could be mitigated through family engagement with health workers. (d) Orientation provided to caregivers regarding RESHAPE needed greater attention, and when information was provided, it contributed to stigma reduction in families. (e) Time management impacted caregivers' ability to facilitate service user participation. DISCUSSION: Engagement with families allows for greater identification of motivational factors and barriers impacting optimal program performance. Caregiver involvement in all program elements should be considered best practice for service user-facilitated antistigma initiatives, and service users reluctant to include caregivers should be provided with health staff support to address barriers to including family. (PsycINFO Database Record