ABSTRACT
More and more evidences have shown that disorder of ubiquitination regulates the genesis and development of tumors.Ubiquitin-conjugating enzymeE2C(UBE2C), an important member of Ubiquitin-Conjugating Enzyme family, is the key factor for metaphase-metaphase transition regulation .In recent years , many studies have focused on the relationship between UBE2 C and tumors .This article reviews the progress of UBE2C expression status in tumors, its influence on genesis and development of tumors and the underlying mechanism .
ABSTRACT
Objective To investigate the application effect of anterior clinoid process drilled off via epidural approach in posterior communicating artery aneurysm ( PCoAA) clipping. Methods The clinical data of 42 patients with PCoAA who underwent craniotomy from January 2012 to January 2014 were analyzed retrospectively,including 22 patients performed anterior clinoid process drilled off and 20 did not. The difficult or easy degree of intraoperative aneurysm clipping and postoperative efficacy were analyzed. Results The aneurysms in 22 patients underwent anterior clinoid process were clipped satisfactorily. The brain retractor was not used during the procedure. Only one patient had cerebral infarction after procedure. No patients had oculomotor nerve paralysis and incomplete clipping of aneurysms. Of the 20 patients without the anterior clinoid process drilled off,3 aneurysms were clipped incompletely because it was difficult to implant aneurysm clips, 2 had cerebral infarction, and 1 had oculomotor nerve paralysis. Conclusion Removing the anterior clinoid process drilled off via extradural approach may bring convenience for PCoAA clipping. It can effectively avoid the difficulty of implanting aneurysm clips during the procedure. Its application is safe and can reduce postoperative complications.
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The purpose was to optimize the vitrification for porcine embryos cryopreservation. Blastocyst/Morula (5-6th day-embryos) were collected from superovulated Bama mini-pigs (sows/gilts). We compared different cryopreservation methods, cryopreservation tools, thining of zona pellucida (ZP) and recipient breeds on the efficiency of porcine embryo cryopreservation. The results showed that: in embryo survival rate and blastocyst cell number, there were no significant differences between cryopreservation method I [embryos were vitrified by two step method with open pulled straw (OPS) and glass micropipette (GMP) in solution 1 (TCM199 + 20% FBS + 10% EG + 10% DMSO) for 3 min, and solution 2 (TCM199 + 20% FBS + 20% EG + 20% DMSO + 0.4 mol/L SUC) for 1 min, stored in liquid nitrogen] and method II[Blastocysts were cultured for 25 min in NCSU23 + 7.5 microg/mL cytochalasin B, centrifuged at approximately 13 000 xg for 12-13 min, and recovered back into pNCSU23. They were then equilibrated for 5 min in 2 mol/L ethylene glycol in pNCSU23, washed quickly in the vitrification medium, 8 mol/L ethylene glycol, 7% polyvinylpyrrolidone (PVP) in pNCSU23, loaded into OPS/GMP, and plunged into liquid nitrogen]. GMP vitrification method was more suitable and efficient than OPS method (P < 0.05) in embryo survival rate (83.8% vs 77.6%) and blastocyst cell number (53.1 vs 47.5) after thawing. Thining of ZP did not increase the survival rate, but significantly improved blastocyst cell number in the survival blastcysts (60.1 and 46, P < 0.01). Local pig breeds (Fengjing sows) were more suitable as recipients for embryo transfer of vitrified/warmed blastcysts, which can improve pregnant rate and embryo efficiency.
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Animals , Blastomeres , Cell Biology , Cryopreservation , Methods , Embryo Transfer , Embryo, Mammalian , Swine , Swine, Miniature , Vitrification , Zona Pellucida , PhysiologyABSTRACT
Objective To study the effect of anti-IL-5 monoclony antibody (TRFK-5) on migration of Eos from BM to the airways in sensitized mice. Methods Male C57BL/6 (6-8wk of age) murine model of Asthma and control group were estabolished with routine method. The outcome measurements include white blood cell (WBC) total count, differential count of bronchoalveolar lavage fluid (BALF) and peripheral blood (PB), nuclear cell count and eosinophil percentage of BM. These parameters were collected 12 h after the final allergen challenge. To cheek Eos infiltration, the histology of lung tissues was also observed. Further, the effects of intranasal TRFK-5 on above changes were investigated. Results Eosinophil numbers of BALF, PB, BM and the infiltration of Eos in pulmovnary tissues were increased considerably 12 h after final OVA challenge compared with negative group(P