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Hulya Iliksu Gozu Sandra Mueller Rifat Bircan Knut Krohn Gazenfer Ekinci Dilek Yavuzer Haluk Sargin Mehmet Sargin Tunc Ones Cem Gezen Ekrem Orbay Beyazit Cirakoglu Ralf Paschke 《Thyroid》2008,18(5):499-508
BACKGROUND: Up to date, three thyroid-stimulating hormone receptor (TSHR) germline variants have been reported for which no functional consequences have been detected by in vitro characterizations. However, familial nonautoimmune hyperthyroidism and hot nodules are clearly associated with constitutively activating TSHR germline mutations. We describe a family with a new TSHR germline mutation that is associated with euthyroidism in 13 family members and hyperthyroidism in 1 family member. METHODS: Mutation analysis of the TSHR gene was performed by denaturing gradient gel electrophoresis. TSHR constructs were characterized by determination of cell surface expression, 3'-5'-cyclic adenosine monophosphate (cAMP) accumulation, and constitutive cAMP activity. RESULTS: A novel TSHR germline mutation (N372T) was found in a man who presented with thyrotoxicosis. The mutation was also detected in 13 family members, all of whom were euthyroid. Interestingly, an additional constitutively active somatic mutation (S281N) was identified on the second parental TSHR allele of the hyperthyroid index patient. Linear regression analysis showed a lack of constitutive activity for N372T. Moreover, coexpression studies of N372T with S281N did not reveal any evidence for a functional influence of N372T on the constitutively active mutation (CAM). CONCLUSIONS: N372T is unlikely to cause altered thyroid function. This is consistent with the finding that only the index patient with the additional somatic mutation S281N was hyperthyroid. 相似文献
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Haznedaroglu BZ Beyazit Y Walker SL Haznedaroglu IC 《Critical reviews in oncology/hematology》2012,83(1):21-34
Sustaining hemostasis in clinical hemorrhages is a challenging task and requires extensive effort to stabilize medically hard-to-treat traumatic injuries. Several hemostatic agents are preferred to control external and internal bleedings, yet commercially available products are not sufficiently effective or fast-acting to achieve hemostasis in extreme cases. Ankaferd Blood Stopper (ABS) is a herbal extract traditionally used as a hemostatic agent. Recent studies have shown that ABS could be utilized successfully as a hemostatic agent for the management of clinical hemorrhages when conventional methods were ineffective. This review serves as a basis to provide recent findings on several applications of ABS, specifically preclinical, biological, and clinical studies both in vitro and in vivo. Another section focuses on the ultrastructural morphology and protein network formation of ABS in an effort to understand the hemostatic mechanisms of this unique agent at tissue level. 相似文献
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Osman Akdemir Murat U?ankale Alper Karao?lan Seref Barut Ayhan Sa?manligil Kaya Bilguvar Beyazit Cirako?lu Elife Sahan Ahmet Colak 《Journal of clinical neuroscience》2008,15(10):1130-1136
Apoptosis is an important element of the secondary processes that occur after spinal cord injury. Calpain and caspases are key proteases in apoptotic cell death. We evaluated the neuroprotective effects of SJA6017 (a calpain inhibitor) and measured functional recovery in a rat spinal cord injury model. Thirty Wistar albino rats were divided into three groups of 10 animals each: sham-operated (group 1), trauma control (group 2) and trauma-plus-SJA6017 treatment (group 3). Spinal cord trauma was produced in the thoracic region of the animals. Rats in group 3 received SJA6017 1 min after trauma. Treatment efficacy was evaluated after injury using light microscopy and TUNEL staining. Neurological performance was assessed using an inclined plane and a modified version of the Tarlov's grading scale. Group 2 rats showed moderate trauma with widespread edema, hemorrhage, vascular thrombi and necrosis 24 h after injury. Group 3 rats had significantly reduced tissue injury and apoptosis. Tarlov scores revealed that group 3 rats also had ameliorated recovery of limb function. Our results demonstrate that treatment with SJA6017 reduces apoptotic cell death, preserves spinal cord tissue and improves functional outcome. Treating calpain-induced apoptosis with this agent may be a feasible therapeutic strategy for patients with spinal cord injury. 相似文献