Cobalt chloride-mimicked hepatocyte cell hypoxia induces TREX1 leading to Hepatitis B virus restriction.

Background: Restriction factors are host cell proteins that play a role in limiting virus replication. They form part of the intrinsic immune system and function as a first line of defense against viral infections. Hepatitis B virus (HBV) does not escape this rule and TREX1, a host restriction enzyme acts as an antiviral factor, leading to the inhibition of the virus.

Disruption of deoxyribonucleotide triphosphate biosynthesis leads to RAS proto-oncogene activation and perturbation of mitochondrial metabolism.

Perturbation of the deoxyribonucleotide triphosphate (dNTP) pool is recognized for contributing to the mutagenic processes involved in oncogenesis. The RAS gene family encodes well-characterized oncoproteins whose structure and function are among the most frequently altered in several cancers. In this work, we show that fluctuation of the dNTP pool induces CG → TA mutations across the whole genome, including RAS gene at codons for glycine 12 and 13, known hotspots in cancers.

Guideline From the Brazilian Society of Surgical Oncology and Brazilian College of Surgeons in Preventing and Managing Acute Hypoparathyroidism After Thyroid Surgery.

The risk of hypoparathyroidism and hypocalcemia is a critical concern in thyroid surgery. Preserving parathyroid gland vascularization during surgery is essential for effective prevention. Preoperative and postoperative management, including calcium and Vitamin D supplementation, is paramount.