Placental Pathology in Maternal Ornithine Transcarbamylase Deficiency

Introduction Ornithine transcarbamylase (OTC) deficiency is the most common urea cycle disorder, inherited in an X-linked manner. Males are severely affected. Female phenotypes vary from asymptomatic to severe, and symptoms may be triggered by high metabolic states like childbirth. Literature on OTC deficiency in pregnancy and placental pathology is limited. Methods Pathology records were searched at a single referral center from 2000–2020 and identified three placental cases from two mothers heterozygous for OTC deficiency. Placental pathology and maternal and neonatal history were reviewed in detail. Results The placenta from one symptomatic mother carrying an affected male fetus showed widespread high-grade fetal vascular malperfusion (FVM) lesions of varying age. These lesions were not seen in the two placentas from the asymptomatic mother. Discussion In cases of symptomatic maternal OTC deficiency, our findings highlight the need for placental examination. Since thrombotic events in the placenta have the potential to associate with fetal and neonatal endothelial damage, a high index of suspicion for neonatal thrombosis may be warranted.

The role of the psychoemotional stress during gestation in the development of obstetrical and perinatal patology

The complex investigation of the perinatal pathology at acute and c/1,1-onic psyclioemotliional stress dunng gestation has been perf 01 wed. Jt was sliown (by tlie metliod of the retrospective analyses) the inaease in the relat-ive 1-isf of tlie premature delivery (1,4-8,0), severe and mild gestosis (3,0-10,0), placental pathology (2,2-3,3 ), anomalies of delivery (2,0-7,0 ), obstetlical Blending (2,0- 2,8 ), late delivery (2,0-7,0) dunng the acute stress. The relationship between tlie pelinatal patology and gestation term was shown dunng the acute stress. Dm'ing- i-lie clironic stress tlie frequency and seventy of pennatal patliology is dependent upon the type of psyclioemotional reaction on the st-ress. The seventy of patliofog-y is more prominent at decompensated type of psychological reaction t-lian at subcompensated type. Tlie newbom infants of motlias witli psyclioemotional stress recuired long rehabilitation in 39,2-50,0% cases.

SARS-CoV-2 Immunohistochemistry In Placenta

Compared to the parental SARS-CoV-2 virus, infections by the now dominant Delta variant of SARS-CoV-2 appear to be more common and more severe in pregnant women. The need for a robust, cheap, and quick method for diagnosing placental infection by SARS-CoV-2 has thus become more acute. Here, we describe a highly sensitive and specific immunohistochemical assay for SARS-CoV-2 nucleocapsid protein for routine use in placental pathology practice.