Evidence for presence of mismatch repair gene expression positive Lynch syndrome cases in India.

Lynch syndrome (LS), the most common form of familial CRC predisposition that causes tumor onset at a young age, is characterized by the presence of microsatellite instability (MSI) in tumors due to germline inactivation of mismatch repair (MMR) system. Two MMR genes namely MLH1 and MSH2 account for majority of LS cases while MSH6 and PMS2 may account for a minor proportion. In order to identify MMR genes causing LS in India, we analyzed MSI and determined expression status of the four MMR genes in forty eight suspected LS patient colorectal tumor samples.

Distinct genetic aberrations in oesophageal adeno and squamous carcinoma.

Background: The two main oesophageal cancer subtypes namely adenocarcinoma and squamous cell carcinoma exhibit interesting clinical, pathological and geographical variations with the former being more common in the West and the latter in Asia.

Materials And Methods: We evaluated status of p53, EGFR, Wnt and HPV in addition to microsatellite instability and loss of heterozygosity of several chromosomal loci in the two oesophageal cancer subtypes from India. The comparative analysis was extended to two oesophageal adenosquamous mixed cancer samples.

Evidence for possible non-canonical pathway(s) driven early-onset colorectal cancer in India.

Two genetic instability pathways viz. chromosomal instability, driven primarily by APC mutation induced deregulated Wnt signaling, and microsatellite instability (MSI) caused by mismatch repair (MMR) inactivation, together account for >90% of late-onset colorectal cancer (CRC). Our understanding of early-onset sporadic CRC is however comparatively limited.

PNUTS functions as a proto-oncogene by sequestering PTEN.

PTEN is a well-defined tumor suppressor gene that antagonizes the PI3K/Akt pathway to regulate a multitude of cellular processes, such as survival, growth, motility, invasiveness, and angiogenesis. While the functions of PTEN have been studied extensively, the regulation of its activity during normal and disease conditions still remains incompletely understood. In this study, we identified the protein phosphatase-1 nuclear targeting subunit PNUTS (PPP1R10) as a PTEN-associated protein.

Pseudoaneurysm of left colic artery after Tenckhoff catheter removal, with unrecognized fungal peritonitis.

A 42-year-old continuous ambulatory peritoneal dialysis patient had presented to us with symptoms and signs of peritonitis, complicated by intestinal obstruction. On fourth day after admission, the Tenckhoff catheter was removed, as there was no response to intraperitoneal antibiotic. He developed hypotension during one of the hemodialysis sessions and was found to have low hemoglobin of 4 g/dL.

Central pancreatectomy for neoplasm of mid pancreas - a report of four cases.

Central pancreatectomy (CP) originally done for pancreatic trauma and focal pancreatitis is recently being performed for benign and low grade malignant neoplasm of mid pancreas. It offers the advantage of conserving pancreatic tissue and preserving gastroduodenal-biliary anatomy, important for maintenance of endocrine and exocrine pancreatic function. We reviewed our database between Jan.

Postcholecystectomy surgical site infection by Salmonella enterica var. Weltevreden.

Background: Surgical site infections (SSI) are the most common complication of gastrointestinal surgery. The most common endogenous organisms encountered are the enteric pathogens.

Methods: We report a rare case of S.