Cyto- and Histopographic Assessment of CPA3-Positive Testicular Mast Cells in Obstructive and Non-Obstructive Azoospermia.

Infertility is an important personal and society disease, of which the male factor represents half of all causes. One of the aspects less studied in male infertility is the immunological testicular microenvironment. Mast cells (MCs), having high potential for regulating spermatogenesis due to fine-tuning the state of the integrative buffer metabolic environment, are one of the most crucial cellular subpopulations of the testicular interstitium. One important component of the MC secretome is proteases that can act as proinflammatory agents and in extracellular matrix (ECM) remodeling. In the testis, MCs are an important cell component of the testicular interstitial tissue (TIT). However, there are still no studies addressing the analysis of a specific MC protease-carboxypeptidase A3 (CPA3)-in cases with altered spermatogenesis. The cytological and histotopographic features of testicular CPA3+ MCs were examined in a study involving 34 men with azoospermia. As revealed, in cases with non-obstructive azoospermia, a higher content of CPA3+ MCs in the TIT and migration to the microvasculature and peritubular tissue of seminiferous tubules were observed when compared with cases with obstructive azoospermia. Additionally, a high frequency of CPA3+ MCs colocalization with fibroblasts, Leydig cells, and elastic fibers was detected in cases with NOA. Thus, CPA3 seems to be of crucial pathogenetic significance in the formation of a profibrogenic background of the tissue microenvironment, which may have direct and indirect effects on spermatogenesis.

Educational Initiative about the COVID-19 Pandemic-Related Neuropsychiatry for Early Career Professionals in EU: The Impact of the Novel Virus on Brain, Mind, and Society.

BACKGROUND: The COVID-19 pandemic brought challenges to governments, healthcare systems (including, mental healthcare services), clinicians and researchers in the EU and worldwide. A range of neurological (e.g., brain fog, encephalitis, myalgia) and psychiatric (e.g., affective disorders, delirium, cognitive disturbances) complications of a novel nature have been observed in patients during the acute phase of illness, which often persist as a Long-COVID state for months after the primary recovery. The pandemic has progressed to a psychodemic and syndemic, affecting communities with social distress, panic, fears, increased home violence, and protest movements that derive from conspiracy theories and hostile attitudes towards vaccination and lockdown measures. In response to this complex scenario of major social changes, universities must face the need to equip the new generation of doctors with novel special skills. SUBJECTS AND METHODS: The study course (50 hours duration; 20 lectures, three webinars, three e-discussion forums, five local seminars, two social events, three intermediate assessments and a final test for certification; bilingual Russian/English hybrid format, information materials, video-content, interactive web-page and social media) was developed by the team of the International Centre for Education and Research in Neuropsychiatry (ICERN), and is unique for the EU. The course integrates the most relevant data on SARS-Cov-2-related neuropsychiatry, and COVID-19' pandemic impact on mental health and society, including assignment of the vulnerable groups of students and healthcare professionals. The major topics covered during the course are (i) Novel virus, (ii) Brain, (iii) Society. The project takes place originally in Samara State Medical University. The ICERN Faculty includes academic staff from France, Hungary, Italy, Russia, Switzerland, invited speakers from the WHO Regional Office for Europe and World Psychiatric Association (EU Zones) members, some of them employed at ICERN by remote work contracts. The format of the educational process for students is hybrid suggesting both remote and face-to-face events. Distant learning participants and EU lecturers are to attend on-line via zoom platform, whereas local participants and staff work face-to-face in the ICERN video-conference room. The course is addressed to a broad audience of doctors, undergraduate and postgraduate students, and researchers from EU wishing to upgrade their knowledge in the pandemic-associated neuropsychiatry. RESULTS: The evaluation process supposes three intermediate assessments and a final test for certification. On-line assessment is to be performed at the project web-page - 10 randomly selected questions with scoring from 1 to 10 each. The Pass Score is 70-100. At the end of the course all the participants receive certificates of Samara State Medical University according to the ERASMUS policy book, as planned in 2021. CONCLUSIONS: We formatted this course as essential for the target audience to improve their resources of professional adaptability in the field of neuropsychiatry and mental healthcare management during challenging times. The ICERN course in pandemic-related neuropsychiatry is essential for early career health professionals and targets the principles of "academia without borders" in the context of international medical knowledge exchange. In the conditions of the changing social situation this educational content is necessary for the young doctors to acquire the add-on skills on flexibility to switch toward new professional approaches in the times of need. The long-term outcomes in pandemic-related neuropsychiatry are still to be seen, though the first feedback on the course content is already promising for the academic community.