Implementation of a Structured Surgery Mentorship Program and Success in the Surgical Residency Match.

Introduction: General Surgery residency programs remain competitive, with over a quarter of US MD seniors failing to match into a categorical program each year. While previous literature has shown the role of mentorship in attracting medical students to surgery, there is a dearth of information demonstrating the role of mentorship in successfully matching those students to surgery programs.

Methods: We implemented a structured mentorship program for medical students interested in applying to general surgery or integrated plastics, vascular, or cardiothoracic residencies over the course of one year, consisting of seven standardized meetings and events spanning the students' MS3 and MS4 years.

Joseph Murray: Pioneering Plastic Surgeon and Father of the First Organ Transplant.

Dr. Joseph Murray was a plastic surgeon who is best known for performing the first successful human organ transplant. After graduating from Harvard Medical School and completing a surgical internship at Peter Bent Brigham Hospital, Murray enlisted in the US Army Medical Corp and spent 5 years at Valley Forge General Hospital treating World War II soldiers injured in combat.

The Variable Insertional Anatomy of the Abductor Pollicis Longus: Functional Relevance and Relationship to Adjacent Thumb Extensors.

Background: The abductor pollicis longus (APL) is classically described as inserting on the base of the first metacarpal. This study analyzed APL insertional anatomy and quantified the size of various elements of the extensor side of the thumb to determine associations with size and function.

Methods: Twenty-four formalin-preserved upper limbs were dissected.

Rab46 integrates Ca and histamine signaling to regulate selective cargo release from Weibel-Palade bodies.

Endothelial cells selectively release cargo stored in Weibel-Palade bodies (WPBs) to regulate vascular function, but the underlying mechanisms are poorly understood. Here we show that histamine evokes the release of the proinflammatory ligand, P-selectin, while diverting WPBs carrying non-inflammatory cargo away from the plasma membrane to the microtubule organizing center. This differential trafficking is dependent on Rab46 (CRACR2A), a newly identified Ca-sensing GTPase, which localizes to a subset of P-selectin-negative WPBs.

MRI Is a DNA Damage Response Adaptor during Classical Non-homologous End Joining.

The modulator of retrovirus infection (MRI or CYREN) is a 30-kDa protein with a conserved N-terminal Ku-binding motif (KBM) and a C-terminal XLF-like motif (XLM). We show that MRI is intrinsically disordered and interacts with many DNA damage response (DDR) proteins, including the kinases ataxia telangiectasia mutated (ATM) and DNA-PKcs and the classical non-homologous end joining (cNHEJ) factors Ku70, Ku80, XRCC4, XLF, PAXX, and XRCC4. MRI forms large multimeric complexes that depend on its N and C termini and localizes to DNA double-strand breaks (DSBs), where it promotes the retention of DDR factors.