Cathepsin B Regulates Ovarian Reserve Quality and Quantity via Mitophagy by Modulating IGF1R Turnover.

The quality and quantity of the ovarian reserve are meticulously regulated through various cell death pathways to guarantee the availability of high-quality oocytes for fertilization. While apoptosis is recognized for contributing to maintaining ovarian reserve, the involvement of other cell death pathways remains unclear. Employing chemical genetics and proteomics, this study reveals the crucial involvement of Cathepsin B in maintaining the ovarian reserve.

Factors associated with delayed health-seeking behaviour and disease severity on admission among patients diagnosed with acute encephalitis syndrome: an observational study from North India.

Introduction: Acute encephalitis syndrome (AES) poses a significant health challenge to children across India. Late arrival at tertiary care hospitals is a primary contributor to disease severity and poor outcomes. This study identifies the determinants of delayed health seeking and disease severity in AES cases.

Hospital-Based Surveillance of Respiratory Viruses Among Children Under Five Years of Age with ARI and SARI in Eastern UP, India.

Acute respiratory infections (ARIs) are a leading cause of death in children under five globally. The seasonal trends and profiles of respiratory viruses vary by region and season. Due to limited information and the population's vulnerability, we conducted the hospital-based surveillance of respiratory viruses in Eastern Uttar Pradesh.

Predictors of encephalitis in children with scrub typhus-associated acute febrile illness.

Scrub typhus (ST) is an emerging public health concern in India. Despite being treatable, 20-30 % of acute febrile illnesses (AFI) progress to encephalitis in endemic regions. This study aimed to identify early markers for encephalitis development in children hospitalized with AFI and positive Orientia tsutsugamushi (Ots) serology.

Re-evaluating Presumptive Treatment with Doxycycline/ Azithromycin in Children With Acute Febrile Illness in a Scrub Typhus Endemic Region: A Cross-Sectional Study.

Objective: To estimate the proportion of children with acute febrile illness (AFI) attending the peripheral health facilities in Gorakhpur, Uttar Pradesh, India, due to Orientia tsutsugamushi (Ots) and re-evaluate the strategy of presumptive administration of doxycycline/azithromycin (PDA) to patients with AFI.

Methods: Children aged 2-18 years with AFI attending 16 peripheral health facilities in Gorakhpur, Uttar Pradesh, were enrolled in September 2023. Blood samples were tested for O.

Glutathione peroxidase (GPX1) - Selenocysteine metabolism preserves the follicular fluid's (FF) redox homeostasis via IGF-1- NMD cascade in follicular ovarian cysts (FOCs).

Follicular ovarian cysts (FOCs) are characterized by follicles in the ovaries that are >20 mm in diameter and persist for >10 days without the corpus luteum, leading to anovulation, dysregulation of folliculogenesis and subfertility in humans and livestock species. Despite their clinical significance, the precise impact of FOCs on oocyte reserve, maturation, and quality still needs to be explored. While FOCs are observed in both human and livestock populations, they are notably prevalent in livestock species.

Diminished NAD+ levels and activation of retrotransposons promote postovulatory aged oocyte (POAO) death.

Death is the fate of postovulatory aged or unfertilized oocytes (POAO) in many animals. However, precise molecular mechanisms are yet to be discovered. Here, we demonstrate that increased amounts of reactive oxygen species (ROS), calcium ion (Ca+2) channels, and retrotransposon activity induce apoptosis, which in turn causes POAO death.

Balanced spatiotemporal arrangements of histone H3 and H4 posttranslational modifications are necessary for meiotic prophase I chromosome organization.

Dynamic nuclear architecture and chromatin organizations are the key features of the mid-prophase I in mammalian meiosis. The chromatin undergoes major changes, including meiosis-specific spatiotemporal arrangements and remodeling, the establishment of chromatin loop-axis structure, pairing, and crossing over between homologous chromosomes, any deficiencies in these events may induce genome instability, subsequently leading to failure to produce gametes and infertility. Despite the significance of chromatin structure, little is known about the location of chromatin marks and the necessity of their balance during meiosis prophase I.

Local DNA synthesis is critical for DNA repair during oocyte maturation.

Mammalian oocytes can be very long-lived cells and thereby are very likely to encounter DNA damage during their lifetime. Defective DNA repair may result in oocytes that are developmentally incompetent or give rise to progeny with congenital disorders. During oocyte maturation, damaged DNA is repaired primarily by non-homologous end joining (NHEJ) or homologous recombination (HR).