Objective To study the effect of extracellular signal-regulated kinase1/2 (ERK1/2)inhibitor U0126 on matrix metalloproteinase-9(MMP-9)in brain tissue after subarachnoid hemorrhage(SAH)in rats and to investigate the action mechanisms of ERK1/2 and M M P-9 in blood-brain barrier(BBB)injury and brain edema after SAH.Methods Seventy-two male Sprague-Dawley rats were randomly divided into four groups:SAH model,sham operation,U0126 intervention,and vehicle groups.A SAH model was induced by injection of autologous blood into cisterna magna once.The dry-wet weight method was used to detected brain tissue water content in order to evaluate cerebral edema.BBB permeability was evaluated by the Evans blue extravasation method.The immunohistochemical method was used to detect the expression of MMP-9 and phosphorylated ERK1/2.Results The expression of phosphorylated ERK1/2 and MMP-9 was lower in the sham operation group.The expression of both was up regulated at 24 hours after SAH.The brain water content and Evans blue content also increased.U0126 treatment decreased the phosphorylation of ERK1/2 and the expression of MMP-9,improved the BBB permeability,and alleviated brain edema.Conclusions MMP-9 is involved in the pathophysiological processes of early BBB injury and brain edema aft er SAH.ERK1/2 pathway may play a vital role in the expression of MMP-9.U0126 may protect BBB and reduce brain edema after SAH by inhibiting the phosphorylation of ERK1/2.

Adult ; Antiretroviral Therapy, Highly Active ; Female ; HIV Infections ; drug therapy ; Humans ; Lamivudine ; administration & dosage ; Male ; Middle Aged ; Treatment Outcome ; Zidovudine ; administration & dosage

The status of health inspection,the setting of courses,teaching reform,requirement of professional and the training pattern of innovative professional were deeply discussed and researched.The pros and cons of several patterns on professional training were summarized.The courses setting and reform emphasis of the innovative professional training were proposed,all of which provided useful view and ideas for training health inspection professionals.

BACKGROUND:Keloid is a very chalenging problem in plastic surgery. Its pathogenesis is very complex, resulting from the combined action of many factors, such as various cytokines, signal transduction pathways, extracelular matrix,etc. At present, a critical role for mechanical force and mechanotransduction in the pathogenesis of keloids has been broadly concerned and becomes the focus of studying the pathogenesis of keloids.
OBJECTIVE:To summarize the progress of the mechanosignaling pathway involved in the pathogenesis of keloids in order to further understand the pathogenesis of keloids and provide new ideas for the prevention of keloids.
METHODS: The PubMed database and Elsevier database were retrieved for articles published from January 2000 to July 2014 by computer with key words of “keloid, molecular mechanism, mechanical stress, cutaneous scar, mechanobiology, mechanosignaling pathway” in English. A total of 23 articles were included which related to the molecular signal transduction mechanism and mechanosignaling pathway about keloids.
RESULTS AND CONCLUSION:The mechanosignaling transduction pathways, such as transforming growth factor-β/Smad, MAPK, integrin, Wnt/β-catenin, RhoA/ROCK and tumor necrosis factor-α/nuclear factor-κB signaling pathway, play an important role in the formation and development of keloids. A number of clinical trials have also shown the effectiveness of a part of mechanosignaling transduction pathway inhibitors in wound healing and reducing scar hyperplasia. The research about mechanosignaling transduction pathways involved in keloids has made some progress, but most stil remain in animal experimental stage. Secondly, various mechanosignaling transduction pathways about correlation and intersectionality stil need further studies to achieve a breakthrough in the prevention of keloids.

Objective:To investigate the KRAS gene mutation features in lung and gastric cancers and their relationship with clinicopathologic characteristics. Methods:A total of 128 lung cancer and 115 gastric cancer patients were included. Polymerase chain reaction amplification and DNA sequencing were conducted to detect mutations in exon 2 of the KRAS gene. Results:The mutation frequency of KRAS was different in lung and gastric cancers;however, it did not show any statistical significance (6.3%vs. 4.3%, P>0.05). The KRAS codon 12 gene mutation ranks the first in both types of cancer. No significant correlation was observed between the prevalence of KRAS mutations and patient's age and gender. KRAS gene mutation rate was higher in lung adenocarcinoma than in non-adenocarcinoma, such as squamous cancer (10.7%vs. 0%, P<0.05). Conclusion:No correlation was found between the KRAS gene mutation and the sex and age of lung and gastric cancer patients in Jiangsu Province. The rate of KRAS mutation was low. KRAS gene mutation rate was relatively higher in lung adenocarcinoma patients;thus, the mutation status of the KRAS gene should be evaluated be-fore undergoing EGFR-TKI therapy.

Objective:To demonstrate the selection of breast implant during an immediate breast reconstruction post-mastectomy and analyze the indication of this technique. Methods:From June 2007 to June 2012, a total of 121 patients with breast cancer received immediate breast reconstruction with breast implants. Among the 121 patients, 89 patients had simple mastectomy, while the rest under-went modified radical mastectomy in the Department of Breast Neoplasm, Nanchang No.3 Hospital. The volumes of the resected breast tissues were measured using Archimedes principle. The diameters of the tissues were also determined. Proper breast implants were se-lected according to the measured data. Results: Postoperative complications, such as implant exposure, flap necrosis, and infection, were not found. Follow-up period ranged from 6 months to 12 months. Patients answered a questionnaire that displayed their degree of satisfaction for the breast operation outcome. Results show that 89.3%of the patients (108/121) were very satisfied, 9%were (11/121) satisfied, and 1.7%(2/121) were unsatisfied. Conclusion:Immediate breast reconstruction with breast implant post-mastectomy is an ideal method for rebuilding the breast. This technique is advantageous because it prevents damage to the donor site and retains the maxi-mal elasticity of the skin for breast reconstruction. Accurate parameters of breast implants, which are important to achieve good surgical results, could be obtained using Archimedes principle.

Objective To investigate the clinical outcome of patients who underwent whole embryo vitrification freezing and thawed frozen embryo transplantation, and to compare it with the patients at the same period in the fresh cycle to explore the value of vitrification technology in the whole embryo freezing combined with recovery transplantation. Methods The whole embryo freezing group included 40 untransplanted cases of in-vitro fertilization (IVF), while another 300 patients in the fresh cycle with in vitro fertilization and embryo transfer (IVF-ET) at the same period served as the fresh cycle group. The average number of transferred embryos, high-quality embryos, endometrial thickness, estradiol (E2) level, and clinical pregnancy rate were compared.Results The average number of transferred embryos, high-quality embryos, difference in endometrial thickness were not significant between the 2 groups (P>0.05); the E2 level of the fresh cylcle group was significantly higher than that of the whole embryo freezing group (P<0.05), and the clinical pregnancy rate in the fresh cylcle group was significantly lower than that of the whole embryo freezing group (P<0.05). Conclusion Vitrification technology is a simple, reliable, and efficient embryo freezing technology. For patients who meet the requirements, whole embryo vitrfication freezing and thawed frozen embryo transplantation is feasible. It is worth for further clinical research.

In this paper, in vitro anti-influenza virus activities of sulfated polysaccharide fractions from Gracilaria lemaneiformis were investigated. Cytotoxicities and antiviral activities of Gracilaria lemaneiformis polysaccharides (PGL), Gracilaria lemaneiformis polysaccharide fraction-1 (GL-1), Gracilaria lemaneiformis polysaccharide fraction-2 (GL-2) and Gracilaria lemaneiformis polysaccharide fraction-3 (GL-3) were studied by the Methyl thiazolyl tetrazolium (MTT) method, and the inhibitory effect against Human influenza virus H1-364 induced cytopathic effect (CPE) on MDCK cells were observed by the CPE method. In addition, the antiviral mechanism of PGL was explored by Plaque forming unit (PFU), MTT and CPE methods. The results showed: i) Cytotoxicities were not significantly revealed, and H1-364 induced CPE was also reduced treated with sulfated polysaccharide fractions from Gracilaria lemaneiformis; ii) Antiviral activities were associated with the mass percentage content of sulfate groups in polysaccharide fractions, which was about 13%, in polysaccharides (PGL and GL-2) both of which exhibited higher antiviral activity; iii) A potential antiviral mechanism to explain these observations is that viral adsorption and replication on host cells were inhibited by sulfated polysaccharides from Gracilaria lemaneiformis. In conclusion, Anti-influenza virus activities of sulfated polysaccharide fractions from Gracilaria lemaneiformis were revealed, and the antiviral activities were associated with content of sulfate groups in polysaccharide fractions.