How different strains of COVID-19 affect LUTS in BPH patients?

In late 2019, an outbreak of pneumonia of unknown etiology was reported in Wuhan (China). The causative agent was quickly identified as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Although the impact of COVID-19 (coronavirus disease 2019) on various organs and symptoms has been studied, there is still a dearth of data regarding its effect on the genitourinary system. In this study, we investigated the impact of different COVID-19 strains on lower urinary tract symptoms (LUTS) in patients with benign prostatic hyperplasia (BPH). A total of 69 patients who had previously been infected with COVID-19 from August 2021 to October 2021 and January 2022 to May 2022 were assessed. The two periods were purposively selected based on the dominant COVID-19 variant: the Delta strain for the first period and Omicron for the second, respectively. All patients had BPH and were followed up in two outpatient practices. Demographic information was collected, and LUTS were assessed using the international prostate symptom score (IPSS) questionnaires before and after COVID-19. Ultrasound examinations were performed to determine the prostate gland volume and the post-voided residual (PVR) in each patient. All patients affected by COVID-19 exhibited a worsening of LUTS. The degree of deterioration differed between those infected with different COVID-19 strains. Patients infected with the Delta strain had more severe LUTS than those with the Omicron strain. There is currently limited information available regarding the emerging pathophysiological processes in the urogenital system related to COVID-19. This present study serves as a preliminary investigation into the impact of COVID-19 on LUTS in BPH patients and could serve as a basis for more extensive multicenter studies leading to fundamental discoveries

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements