Retinoic acid and 17β-estradiol improve male germ cell differentiation from mouse-induced pluripotent stem cells

This research aimed to explore the impacts of retinoic acid (RA)/17β-estradiol (E) induction and embryoid body formation to enhance differentiation of mouse-induced pluripotent stem cells (miPSCs) into male germ cells in vitro. Flow cytometry and qPCR were conducted to describe miPSCs differentiation process. Various temporal expression profiles of germ cell-related genes were traced. Stra8 gene expression increased in the RA group on the 4th day compared to other groups. The RA group experienced a more significant increase than E group. The expression of Sycp3 increased in RA + E group on 4th day compared with other groups. Expression of AKAP3 enhanced in the RA + E group than other groups on day 4. Moreover, miPSCs showed that this gene expression in the RA + E group was increased in comparison to RA and E groups on day 7. AKAP3 gene expression on day 7 of miPSCs decreased in RA and E groups. Flow cytometry data indicated that 3%–8% of the cells in sub-G1 stage were haploid after RA and E induction compared to other groups on day 4. This study showed that miPSCs possess the power for differentiating into male germ cells in vitro via formation of embryoid body by RA with/or E induction.     

Reversible blindness after erroneous prescription of closantel: A case report

A 20‐year‐old girl was referred with vision loss upon closantel use. Plasma exchange and high‐dose corticosteroid pulse therapy were administered. A 2.5‐year follow‐up showed improved vision and increased layer thickness of the peripheral nerve fiber. Early treatment with plasma exchange and high‐dose corticosteroid therapy can be beneficial to reverse closantel toxicity.     

Constrictive pericarditis following inactivated virus COVID-19 vaccine: a case report with review of the literature

Cardiac adverse effects of the COVID-19 vaccine are very rare, myocarditis and pericarditis are the most common amid them, and constrictive pericarditis (CP) is reported to be restricted to a few cases following mRNA COVID-19 vaccines. We report a case of a 72-year-old male patient who developed symptoms of right-sided heart failure, which started after 8 days of receiving the third dose of inactivated virus COVID-19 vaccine and his diagnostic tests comprising transthoracic echocardiography, chest CT scan, cardiac magnetic resonance were in favor of CP. Ultimately, invasive cardiac catheterization confirmed the diagnosis of CP. Due to the lack of satisfactory response to corticosteroid therapy, pericardiectomy was performed, which gave rise to symptom relief progressively and substantially. Considering the temporal course of the patient''s symptoms and exclusion of other possible etiologies based on the patient''s medical history and diagnostic evaluation, immunization with the COVID-19 vaccine was recognized as a culprit for developing CP. Despite being a scarce phenomenon, the COVID-19 vaccine could have a tendency to provoke pericardial inflammation in so far as causing CP. Hence, physicians should have a high index of suspicion in these circumstances and accelerate the diagnostic investigation.