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These data revealed that LY344864-induced MB attenuates dopaminergic neuron loss and improves behavioural endpoints in this model. We suggest that stimulating MB may be beneficial for the treatment of Parkinson's disease and that the 5-HT receptor may be an effective therapeutic target.

Growth hormone receptor knockout (GHR-KO) mice are long lived with improved health span, making this an excellent model system for understanding biochemical mechanisms important to cognitive reserve. The purpose of the present study was to elucidate differences in cognition and glutamatergic dynamics between aged (20- to 24-month-old) GHR-KO and littermate controls. Glutamate plays a critical role in hippocampal learning and memory and is implicated in several neurodegenerative disorders, including Alzheimer's disease. Spatial learning and memory were assessed using the Morris water maze (MWM), whereas independent dentate gyrus (DG), CA3, and CA1 basal glutamate, release, and uptake measurements were conducted in isoflurane anesthetized mice utilizing an enzyme-based microelectrode array (MEA) coupled with constant potential amperometry. These MEAs have high temporal and low spatial resolution while causing minimal damage to the surrounding parenchyma. Littermate controls performed worse on the memory portion of the MWM behavioral task and had elevated DG, CA3, and CA1 basal glutamate and stimulus-evoked release compared with age-matched GHR-KO mice. CA3 basal glutamate negatively correlated with MWM performance. These results support glutamatergic regulation in learning and memory and may have implications for therapeutic targets to delay the onset of, or reduce cognitive decline, in Alzheimer's disease.

The SARS-CoV-2 outbreak from October 2020 through February 2021 was the largest outbreak as of February 2021, and timely information on current representative prevalence, vaccination, and loss of prior antibody protection was unknown. In February 2021, the South Carolina Department of Health and Environmental Control conducted a random sampling point prevalence investigation consisting of viral and antibody testing and an associated health survey, after selecting participants aged ≥5 years using a population proportionate to size of South Carolina residents. A total of 1917 residents completed a viral test, 1803 completed an antibody test, and 1463 completed ≥1 test and a matched health survey. We found an incidence of 2.16 per 100 residents and seroprevalence of 16.4% among South Carolina residents aged ≥5 years. Undetectable immunoglobulin G and immunoglobulin M antibodies were noted in 28% of people with a previous positive test result, highlighting the need for targeted education among people who may be susceptible to reinfection. We also found a low rate of vaccine hesitancy in the state (13%). The results of this randomly selected surveillance and associated health survey have important implications for prospective COVID-19 public health response efforts. Most notably, this article provides a feasible framework for prompt rollout of a statewide evidence-based surveillance initiative.

Purpose of Review The aim of this review is to present a comprehensive look at five intestinal soil-transmitted helminths (STHs) of global health importance that may continue to plague low-income and rural areas of the USA and argue the need for enhanced surveillance of these infections, which primarily affect the nation's most vulnerable groups. Recent Findings Human STH infections in middle-and high-income countries are at particular risk for being undiagnosed; as common symptoms are non-specific, differentials require a high index of clinical suspicion, and cases are concentrated in areas of poverty where access to care is limited. Although autochthonous STHs are thought to be rare in the USA, infections were once common in the American South and Appalachia and robust epidemiologic surveillance is limited post 1980s. However, recent community studies and case reports from small-scale farms and areas of high rural or inner-city poverty reveal the potential for persisting helminth infections in distinct populations of the country. Summary STHs are among the most common neglected tropical diseases globally causing significant morbidity in underserved communities and contributing to the continuation of cycles of poverty within vulnerable populations. Due to possible severe disease sequalae and their ability to perpetuate poverty and poverty-associated health outcomes within already vulnerable groups, it is vital that surveillance for these infections is enhanced to bolster health equity in the USA.

In the Trans-Pecos region of Texas, reports of domestic triatomine bites were common (67%), with 36% of residentially collected triatomines positive for Trypanosoma cruzi . Despite the transmission potential, no human infections were detected. Collected Triatoma rubida species were themselves frequently parasitized with mites.

Introduction Sexual satisfaction is believed to decrease during pregnancy; however, the effect of pregnancy on the sexual relationship in a couple is not well studied. Aim To assess for sexual dysfunction in heterosexual couples during pregnancy. Methods We performed a cross-sectional study of heterosexual pregnant women in the third trimester and their cohabitating partners. Main Outcome Measures Sexual satisfaction in heterosexual couples during pregnancy was assessed with a self-reported questionnaire, the Golombok-Rust Inventory of Sexual Satisfaction (GRISS) questionnaire. Results A total of 53 couples met eligibility criteria, and nearly all of those approached participated (52 of 53 couples). All couples were enrolled at or after 35 weeks’ gestation. The mean age was 29.0 ± 6.4 and 31.3 ± 6.9 years for women and men, respectively. 60% of couples were married, and the remainder were cohabitating and in a committed relationship. When analyzing the results of the GRISS questionnaire for both partners, a significant difference was seen in mean avoidance of sex between women and men (3.31 vs 2.63; P = .047) and non-sensuality (3.54 vs 2.75; P = .040). Women reported more of a decrease in communication about sex when compared with their partners (3.79 vs 3.23; P = .047). Vaginismus was more problematic during pregnancy than before (mean = 4.17), and frequency of intercourse was decreased (mean = 4.93) based on calculated GRISS scores. Clinical Implications Pregnant couples reported decreased frequency of intercourse and more pain with intercourse in women. Women were more likely to avoid intercourse and reported more problems with communication regarding sexual needs. Strength & Limitations This study is the first to assess both partners in pregnancy. Due to the nature of the study, we were unable to assess other factors affecting the relationship that may result in sexual dysfunction, there was no control group, and the results are limited to heterosexual couples. Conclusion Overall sexual satisfaction and function were not problematic for these couples during pregnancy based on the GRISS scale.

This historical review highlights previously undescribed potential foci for sylvatic and domestic locally acquired Chagas disease in California. The review starts in the 1910s, when Trypanosoma cruzi was first discovered through scientific triatomine investigations. Next, the natural transition around the mid-1900s into clinical investigations of the domestic and peridomestic environments and their epidemiologic profiles is detailed. The review closes with the shift to applied genetic, diagnostic and scientific applications surrounding Chagas disease infected individuals in the state.Throughout the course of the review, transmission foci and their unique clinical and epidemiologic characteristics are described. This in-depth review has merit for clinicians, veterinarians and public health officials working with vector-borne diseases in the southwestern USA.