Untapped Potential: Real-Time Measurements of Opioid Exocytosis at Single Cells.

The endogenous opioid system is commonly targeted in pain treatment, but the fundamental nature of neuropeptide release remains poorly understood due to a lack of methods for direct detection of specific opioid neuropeptides in situ. These peptides are concentrated in, and released from, large dense-core vesicles in chromaffin cells. Although catecholamine release from these neuroendocrine cells is well characterized, the direct quantification of opioid peptide exocytosis events has not previously been achieved. In this work, a planar carbon-fiber microelectrode served as a "postsynaptic" sensor for probing catecholamine and neuropeptide release dynamics via amperometric monitoring. A constant potential of 500 mV was employed for quantification of catecholamine release, and a higher potential of 1000 mV was used to drive oxidation of tyrosine, the N-terminal amino acid in the opioid neuropeptides released from chromaffin cells. By discriminating the results collected at the two potentials, the data reveal unique kinetics for these two neurochemical classes at the single-vesicle level. The amplitude of the peptidergic signals decreased with repeat stimulation, as the halfwidth of these signals simultaneously increased. By contrast, the amplitude of catecholamine release events increased with repeat stimulation, but the halfwidth of each event did not vary. The chromogranin dense core was identified as an important mechanistic handle by which separate classes of transmitter can be kinetically modulated when released from the same population of vesicles. Overall, the data provide unprecedented insight into key differences between catecholamine and opioid neuropeptide release from isolated chromaffin cells.

Exploiting Microelectrode Geometry for Comprehensive Detection of Individual Exocytosis Events at Single Cells.

Carbon fiber microelectrodes are commonly used for real-time monitoring of individual exocytosis events at single cells. Since the nature of an electrochemical signal is fundamentally governed by mass transport to the electrode surface, microelectrode geometry can be exploited to achieve precise and accurate measurements. Researchers traditionally pair amperometric measurements of exocytosis with a ∼10-µm diameter, disk microelectrode in an "artificial synapse" configuration to directly monitor individual release events from single cells. Exocytosis is triggered, and released molecules diffuse to the "post-synaptic" electrode for oxidation. This results in a series of distinct current spikes corresponding to individual exocytosis events. However, it remains unclear how much of the material escapes detection. In this work, the performance of 10- and 34-µm diameter carbon fiber disk microelectrodes was directly compared in monitoring exocytosis at single chromaffin cells. The 34-µm diameter electrode was more sensitive to catecholamines and enkephalins than its traditional, 10-µm diameter counterpart, and it more effectively covered the entire cell. As such, the larger sensor detected more exocytosis events overall, as well as a larger quantal size, suggesting that the traditional tools underestimate the above measurements. Both sensors reliably measured l-DOPA-evoked changes in quantal size, and both exhibited diffusional loss upon adjustment of cell-electrode spacing. Finite element simulations using COMSOL support the improved collection efficiency observed using the larger sensor. Overall, this work demonstrates how electrode geometry can be exploited for improved detection of exocytosis events by addressing diffusional loss─an often-overlooked source of inaccuracy in single-cell measurements.

Sexual and gender minority health in Chile: findings from the 2016-2017 Health Survey.

OBJECTIVE: To expose visibility of the health concerns of sexual and gender minority groups in Chile, as well as to provide a platform to advocate for policies that support the health and well-being of sexual and gender minority people in the country. METHODS: The health conditions and risk factors of participants identified as sexual and gender minority were compared to those identified as cisgender heterosexual using data from the 2016-2017 National Health Survey. RESULTS: Despite reporting higher self-rated health than heterosexual men, gay men had a higher risk of lifetime diagnosis of sexually transmitted infections. Compared to heterosexual women, the prevalence of depression was higher among bisexual women, who were also less likely to have been tested for HIV. Moreover, transgender participants were more likely to report depression and worse self-rated health than cisgender heterosexual participants. CONCLUSION: Small sample sizes of sexual and gender minority subgroups might have obscured some differences that would have been observable in larger samples. Despite this, we found statistically significant sexual and/or gender identity differences in several health areas, especially mental, sexual, and overall health.

Nursing engagement in research priorities focused on health systems and services in Latin America countries.

BACKGROUND: A strong nursing research agenda in Latin America is fundamental to universal health coverage. Nursing science can make important contributions to the health of Latin American people through knowledge generation that directly informs nursing practice, professional education, and health policy. METHODS: We used a cross-sectional survey design to assess nursing involvement in health systems and services research in Latin America in five priority areas: Policies and education related to nursing human resources; Structure, organization and dynamics of health systems and services; Science, technology, innovation, and information systems in public health; Health policies, governance, and social control; and Social studies in the health field. RESULTS: Nursing and midwifery participants (N = 856) from Latin American countries completed the survey. Respondents who reported conducting research focused primarily on Policies and Education related to Nursing Human Resources and Structure, Organization, and Dynamics of Health Systems and Services. Across the five priority areas, more nurses reported using research findings and/or being aware of research than conducting research. CONCLUSIONS: Survey results indicate that nursing research in Latin America is currently disproportionately focused on nursing education and practice. More research focused on information technology, nurse's impact on public health, and the threats posed by nurse migration is needed to better address health needs of Latin American populations.

Oral Health Status in Mentally Disabled Children, Dental Care Knowledge of Parents, and the Impact of Audiovisual Oral Health Education Program.

Aims and objectives: The aims and objectives of this study were to evaluate the oral health status in a group of mentally disabled children, to identify the oral health knowledge of parents and to assess the impact of audiovisual oral health education program. Materials and methods: The study sample comprised of 120 mentally disabled subjects aged 5-16 years and 40 parents attending a vocational institute in Jaipur, India. Caries status and oral hygiene status were assessed by DMFT Index and Simplified Oral Hygiene Index (OHI-S) of Greene and Vermillion, respectively. Twenty pre- and post-structured close-ended questions were designed and a 5-minute video on oral health education was prepared. Data was analyzed by using one way ANOVA test followed by Post hoc Tukeys HSD Test, Wilcoxon Signed Rank Test, and Chi-square test. Effectiveness index was calculated to find the impact of AV Teaching Program. Results: Oral hygiene status deteriorates as the severity of mental retardation increases but it was not found significantly associated with oral hygiene status. An effectiveness index of at least 0.5 indicates that the instructional media was satisfactorily effective. Conclusion: Maximum children with poor oral hygiene were in the category of severe mental retardation and mean OHI-S score decreases from severe-to-mild mental retardation. The newly designed audiovisual aid on complete oral health care was effective at some levels in improving the oral health knowledge of the parents/caregivers of mentally retarded children. How to cite this article: Shah RK, Choudhary S, Tandon S. Oral Health Status in Mentally Disabled Children, Dental Care Knowledge of Parents, and the Impact of Audiovisual Oral Health Education Program. Int J Clin Pediatr Dent 2022;15(2):143-148.

Addressing mental and emotional health concerns experienced by nurses during the COVID-19 pandemic.

BACKGROUND: Nurses are the majority of the world's health work force and the frontline responders during pandemics. The mental/emotional toll can be profound if it is not identified and treated. PURPOSE: In March 2020, with New York City as the epicenter of the COVID-19 pandemic in the United States, Columbia University School of Nursing organized support circles for faculty and students providing clinical care as a healing method to address trauma. METHODS: Columbia University School of Nursing adapted guidelines and conducted Circles of Care to share, listen, and acknowledge the new challenges for nurses via Zoom. Analysis of these sessions produced major themes of concern for nurses. FINDINGS: Between March 31 and May 31, 2020, we facilitated 77 sessions with 636 attendees. Eight major themes emerged: coping mechanisms, patients suffering and dying, feelings of helplessness, frustration with COVID-19 response, silver lining, disconnection from the world, the thread that holds nurses together, and exhaustion. DISCUSSION: This report offers insight into the mental/emotional outcomes of being on the frontlines. Addressing these issues is essential for the well-being of nurses and all health care providers for an effective pandemic response.

Sexual and gender minority health in Chile: findings from the 2016-2017 Health Survey

ABSTRACT OBJECTIVE To expose visibility of the health concerns of sexual and gender minority groups in Chile, as well as to provide a platform to advocate for policies that support the health and well-being of sexual and gender minority people in the country. METHODS The health conditions and risk factors of participants identified as sexual and gender minority were compared to those identified as cisgender heterosexual using data from the 2016-2017 National Health Survey. RESULTS Despite reporting higher self-rated health than heterosexual men, gay men had a higher risk of lifetime diagnosis of sexually transmitted infections. Compared to heterosexual women, the prevalence of depression was higher among bisexual women, who were also less likely to have been tested for HIV. Moreover, transgender participants were more likely to report depression and worse self-rated health than cisgender heterosexual participants. CONCLUSION Small sample sizes of sexual and gender minority subgroups might have obscured some differences that would have been observable in larger samples. Despite this, we found statistically significant sexual and/or gender identity differences in several health areas, especially mental, sexual, and overall health.

Findings of a Naloxone Database and its Utilization to Improve Safety and Education in a Tertiary Care Medical Center.

INTRODUCTION: Analyzing hospital naloxone use may assist in identification of areas for quality and safety improvement. Our primary objective is to quantitate the incidence of hospital naloxone use and to assess certain patient populations at risk. METHODS: During the years 2008 to 2011, each clinical scenario where naloxone was administered on an in-patient care ward was reviewed. The events were assessed to separate situations where naloxone rescue was effective in reversing opioid-induced intoxication vs. others. Further analysis was conducted to stratify patient populations at greatest risk. RESULTS: Naloxone was administered for well-defined opioid-induced respiratory depression and oversedation 61% of the time, the remainder used for patient deterioration of other etiology. Surgical populations are at risk with an incidence of 3.8/1,000 hospitalized patients, and this is the greatest within 24 hours of surgery. General surgical patients represent the highest surgical patient risk at 5.5/1,000. Medical patients represent lower risk at 2.0/1,000. Patients with patient-controlled analgesia and epidural opioid infusion are high risk at 12.1 and 13.1/1,000 patients, respectively. Many quality and safety interventions were gradually implemented in response to this data and are summarized. These include nursing and provider education, electronic medical record modification, and more stringent patient monitoring practices. CONCLUSION: Examination of naloxone use can assist in the identification and stratification of patients at risk for opioid-induced respiratory depression and oversedation and can serve as a driver for improvements in hospital patient safety. This information can also guide other institutions interested in similar improvements.

The effect of targeted and tailored patient depression engagement interventions on patient-physician discussion of suicidal thoughts: a randomized control trial.

BACKGROUND: Despite improvements in the diagnosis and treatment of depression, primary care provider (PCP) discussion regarding suicidal thoughts among patients with depressive symptoms remains low. OBJECTIVE: To determine whether a targeted depression public service announcement (PSA) video or an individually tailored interactive multimedia computer program (IMCP) leads to increased primary care provider (PCP) discussion of suicidal thoughts in patients with elevated risk for clinical depression when compared to an attention control. DESIGN: Randomized control trial at five different healthcare systems in Northern California; two academic, two Veterans Affairs (VA), and one group-model health maintenance organization (HMO). PARTICIPANTS: Eight-hundred sixty-seven participants, with mean age 51.7; 43.9% women, 43.4% from a racial/ethnic minority group. INTERVENTION: The PSA was targeted to gender and socio-economic status, and designed to encourage patients to seek depression care or request information regarding depression. The IMCP was an individually tailored interactive health message designed to activate patients to discuss possible depressive symptoms. The attention control was a sleep hygiene video. MAIN MEASURES: Clinician reported discussion of suicidal thoughts. Analyses were stratified by depressive symptom level (Patient Health Questionnaire [PHQ-9] score < 9 [mild or lower] versus ≥ 10 [at least moderate]). KEY RESULTS: Among patients with a PHQ-9 score ≥ 10, PCP discussion of suicidal thoughts was significantly higher in the IMCP group than in the control group (adjusted odds ratio = 2.33, 95% confidence interval = 1.5, 5.10, p = 0.03). There were no significant effects of either intervention on PCP discussion of suicidal thoughts among patients with a PHQ-9 score < 9. CONCLUSIONS: Exposure of patients with at least moderate depressive symptoms to an individually tailored intervention designed to increase patient engagement in depression care led to increased PCP discussion of suicidal thoughts.