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In vivo somatosensory stimuli evoked the release of substance P from primary afferent neurons that terminate in the spinal cord and stimulated endocytosis of substance P receptors in rat spinal cord neurons. The distal dendrites that showed substance P receptor internalization underwent morphological reorganization, changing from a tubular structure to one(More)
BACKGROUND AND AIMS The role of sensory neurones in colitis was studied by chemical denervation of primary sensory neurones as well as antagonism of the vanilloid receptor-1 (VR-1) in rats prior to administration of dextran sulphate sodium (DSS) to induce colitis. METHODS Neonatal rats were chemically denervated by subcutaneous administration of(More)
Studies on cultured cells have shown that agonists induce several types of G protein-coupled receptors to undergo internalization. We have investigated this phenomenon in rat striatum, using substance P (SP)-induced internalization of the SP receptor (SPR) as our model system. Within 1 min of a unilateral striatal injection of SP in the anesthetized rat,(More)
PURPOSE The overexpression of vascular endothelial growth factor (VEGF) is associated with poor outcomes in colorectal cancer patients. Bevacizumab, a VEGF inhibitor, enhances the effects of chemotherapy and radiation therapy on tumor cytotoxicity in preclinical models, including colorectal cancer. A Phase I trial was undertaken to evaluate the combination(More)
Interest in robotic technology is burgeoning within the field of colorectal surgery. However, benefits of robotic-assisted colectomy (RAC) compared with laparoscopic colectomy (LC) remain ambiguous. Patients who underwent minimally invasive colectomy during 2012–2013 were identified from the National Surgical Quality Improvement Program (NSQIP) database.(More)
OBJECTIVE To determine the association between preoperative bowel preparation and 30-day outcomes after elective colorectal resection. METHODS Patients from the 2012 Colectomy-Targeted American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) database who underwent elective colorectal resection were included for analysis and(More)
PURPOSE Overexpression of epidermal growth factor receptor (EGFR) has been associated with aggressive tumor phenotypes, chemotherapy, and radiation resistance, as well as poor survival in preclinical and clinical models. The EGFR inhibitor gefitinib potentiates chemotherapy and radiation tumor cytotoxicity in preclinical models, including pancreatic and(More)
Quantitative receptor autoradiography using several radiolabeled tachykinins was used to localize and characterize tachykinin peptide receptor binding sites in rat CNS and peripheral tissues. Autoradiographic localization and displacement experiments using several radiolabeled tachykinins indicate that in the rat there are at least 3 distinct tachykinin(More)
BACKGROUND & AIMS Nerves have been suggested to mediate the effects of bacterial toxins in intestinal diseases. However, the mechanisms involved are unknown. This study examined endogenous substance P (SP) activation of the substance P receptor (SPR) on enteric neurons in the rat ileum after exposure to intraluminal Clostridium difficile toxin A. METHODS(More)
OBJECTIVE This study examines short-term outcomes and pathologic surrogates of oncologic results among patients undergoing robotic versus laparoscopic low anterior resection for rectal cancer. A total of 6403 patients met inclusion criteria. Although the robotic approach required significantly fewer conversions to open, surrogates for proper oncologic(More)