Spontaneous colonic rupture related to the segmental absence of muscularis propria in an adult.

Colonic perforation is a medical emergency that may be fatal if surgery cannot be performed in a timely manner. Colonic rupture in adults is caused by primary (idiopathic) and secondary factors. Although the segmental absence of muscularis propria (SAMP) is a recognized cause of secondary colonic rupture in neonates and infants, few cases have been reported in adults. Here, we present the case of a large colonic rupture caused by SAMP in a 60-year-old woman and a review of the literature. We suggest that SAMP should be included in the differential diagnosis of large perforation and/or periperforation membranous thinning of the colonic wall in adults.

Pinostilbene Hydrate Suppresses Human Oral Cancer Cell Metastasis by Downregulation of Matrix Metalloproteinase-2 Through the Mitogen-Activated Protein Kinase Signaling Pathway.

BACKGROUND/AIMS: Cancer is the most common cause of death worldwide with approximately one third of people being diagnosed with cancer in their lifetime. Pinostilbene hydrate (PSH) A methylated derivative of resveratrol Has been reported to possess antioxidative Cardioprotective and anticancer properties. However the antimetastatic effect of pinostilbene in oral squamous cell carcinoma (OSCC) remains unknown. METHODS: In this study We investigated the effect of PSH on antimetastatic activity and the relevant signaling pathways underlying mechanisms of SCC-9 SAS and HSC-3 oral cancer cell lines by MTT assay Wound healing Transwell assay Zymography and western blot analysis. RESULTS: Our findings indicated that PSH inhibits migration and invasion ability by reducing the protein activity and expression of matrix metalloproteinases-2 (MMP-2) in all three cell lines. Moreover • The phosphorylation of extracellular signal-regulated kinase (ERK) and p38 mitogen-activated protein kinases (p38) had significant inhibitory effects in the presence of PSH in the SCC9 and SAS cell lines. A combination of ERK1/2 and p38 inhibitors with PSH also reduced the migration and activity of MMP-2 in the SCC9 and SAS cell lines. CONCLUSION: This study demonstrated that PSH suppresses MMP-2 enzymatic activity by downregulating the p38/ERK1/2 pathway and that it might be a promising agent for preventing OSCC cell metastasis.

Acidic leucine-rich nuclear phosphoprotein-32A (ANP32A) association with lymph node metastasis predicts poor survival in oral squamous cell carcinoma patients.

Acidic leucine-rich nuclear phosphoprotein-32A (ANP32A) is a multifunctional protein aberrantly expressed in various types of cancers. However, its expression pattern and clinical significance in oral squamous cell carcinoma (OSCC) remains unclear. In this study, we immunohistochemically investigated the expression pattern of ANP32A in 259 OSCC patients and the results were correlated with clinicopathological factors using Allred, Klein and Immunoreactive scoring (IRS) system. Our data indicated that high expression of ANP32A was significantly associated with N stage and tumor differentiation status in OSCC patients. High ANP32A expression with N2/N3 stage had an increased mortality risk than low ANP32A expressing OSCC patients with N0/N1 stage. Functional studies revealed that knockdown of ANP32A significantly decreased the migration and invasion ability thereby concomitantly increasing E-cadherin and decreasing Slug, Claudin-1 and Vimentin expression in vitro. These results suggest that ANP32A is commonly increased in oral squamous cell carcinoma and ANP32A protein could act as a potential biomarker for prognosis assessment of oral cancer patients with lymph node metastasis.