Objective To observe the improvement of Guangdong Liangcha Granules (GLG) on restraint-stress-induced peroxidation in genital organs of mice. Meth ods Mice models of peroxidation injury in genital organs were induced by 18-hou r restraint stress. Testicular and ovarian malondialdehyde (MDA) level was detec ted by thiobarbituric acid method,glutathione (GSH) content by HPLC,xanthine o xidase (XOD) and GSH-PX activities by colorimetric method,nitric oxide (NO) co ntent by Griess chemical method and oxygen radical absorbance capacity (ORAC) by enzyme-linked fluorescent immunoassay. Results Compared with model group,GLG can markedly reduce MDA level,XOD acitivity and NO contents,in addition,GLG c an effectively increase the ORAC value,GSH content,GSH-PX activity in testis and ovaries. Conclusion Oral treatment of Guangdong Liangcha Granules was found to reduce the status of peroxidation in testis and ovaries,and the improvement may be related to the increase of its free radical scavenging activity and lipid peroxidation.

Objective The purpose of this study is to evaluate Surgical Procedure and Prognosis for elderly stage 1NSCLC patients above 70 years old.Methods The patients who were stage Ⅰ non-small cell lung cancer from 2003 to 2007were enrolled ( n =71 ).The median age was 74 years ( ranged from 70 to 84 years).The median follow-up of patients was 30months( ranged from 2 to 81 months).Results The percentages of postoperative complications after sublobar resection and lobectomy patients were 36.4％ and 46.9％,respectively.The period in hospital were 11.36 days and 12.24 days.The 3 year survival was 85.9％ for patients undergoing sublobar resection and 78.8％ for lobectomy.The 5 year survival was 56.4％ and 56.9％ respectively.No significant difference was observed between two types of surgical procedure in the elderly.Staging is the independent factor of prognosis.Conclusion Lobectomy is still the main therapy method for elderly stage Ⅰ NSCLC patients.Especially,for those who can undergo radical resection.But sublobar resection also appears to be a viable surgical treatment for patients with cardiopulmonary physiologic impairment.

BACKGROUND:The production and release of a large amount of inflammatory factors caused by immune system inflammatory response mainly contributes to secondary spinal cord injury. OBJECTIVE:To investigate the effects of umbilical cord Wharton’s jely mesenchymal stem cel transplantation on repair of injured neurological function and expression of inflammatory factors monocyte chemoattractant protein 1 and interleukin 10 in rats with acute spinal cord injury. METHODS: Eighty-one healthy adult male Sprague-Dawley rats were randomly and equaly divided into sham operation, model and cel transplantation groups, with 27 rats per group. Rats in the latter two groups were subjected to hemisection of the spinal cord to establish acute spinal cord injury models. Rat models in the cel transplantation group received umbilical cord Wharton’s jely mesenchymal stem cel injection (1×106)via the tail vein. Rat neurological function was evaluated using the BBB score at different time points after spinal cord injury. The expression of monocyte chemoattractant protein 1 and interleukin 10 in injured spinal cord tissue was detected using ELISA assay at different time points after spinal cord injury. Migration and neuronal differentiation of umbilical cord Wharton’s jely mesenchymal stem cels in the injured spinal cord tissue were determined using immunohistochemical staining method. RESULTS AND CONCLUSION:Compared with the sham operation and model groups, rat neurological function was significantly recovered in the cel transplantation group (P < 0.05). Compared to the model group, monocyte chemoattractant protein 1 level in the serum and monocyte chemoattractant protein 1 mRNA and protein expression in the injured spinal cord tissue were significantly lower (P < 0.05), but interleukin 10 mRNA and protein expression in the injured spinal cord tissue was significantly higher (P < 0.05), in the cel transplantation group. In the cel transplantation group, umbilical cord Wharton’s jely mesenchymal stem cels could migrate to the injured region and express glial fibrilary acidic protein. These findings suggest that umbilical cord Wharton’s jely mesenchymal stem cels promote rat neurological function recovery by regulating the inflammatory response in the injured spinal cord tissue, which is likely to be one of mechanisms by which transplantation of umbilical cord Wharton’s jely mesenchymal stem cels treats spinal cord injury.

Objective To investigate the relationships between the pathology classification, Masaoka clinical stage and postoperation myasthenic crisis in patients of myasthenia gravis with thymoma undergoing thymectomy. Methods Clinical records of 56 patients of myasthenia gravis with thymoma from January 2006 to December 2015 who had underwent thymectomy were reviewed retrospectively. The following factors were analyzed to find the relation to the occurrence of myasthenic crisis after thymectomy: WHO pathology classification, Masaoka clinical stage and tumor size. Results Sixteen patients experienced postoperative myasthenic crisis after thymectomy. Statistical analysis revealed that the incidence of postoperative myasthenic crisis in patients with Masaoka Ⅲ stage was significantly higher than that in patients with Masaoka Ⅰ and Ⅱ stage: 39.39% (13/33) vs. 13.04% (3/23), the incidence of postoperative myasthenic crisis in patients with WHO pathology classification B3 and C type was significantly higher than patients with WHO pathology classification B2 type: 50.00% (12/24) vs. 14.29% (4/28), the incidence of postoperative myasthenic crisis in patients with tumor size more than 5 cm was significantly lower than patients with tumor size less than 5 cm: 10/17 vs. 15.38% (6/39), and there were statistical differences (P＜0.05 or＜0.01). Conclusions WHO pathology classification and Masaoka clinical stage are significantly correlated with the occurrence of myasthenia crisis after thymectomy. The patients with MasaokaⅢstage, WHO pathology classification B3 and C type and tumor size more than 5 cm have the risk of postoperative myasthenic crisis after thymectomy. The comprehensive intervention before and after operation can prevent myasthenia crisis.

Objective: To investigate the molecular mechanism of colistin resistance in Klebsiella pneumoniae (K.pneumoniae). Methods: Three clinical isolates of colistin-resistant K. pneumoniae (FK1149, FK1920 and FK1934) and three colistin-resistant mutants (FK660R, FK713R and FK729R) were investigated. Resistance genes of pmrAB, phoPQ, mgrB, crrAB, mcr-1 and mcr-2 were detected by PCR and then analyzed by sequencing. PROVEAN platform was used to predict changes in the biological functions of proteins related to drug resistance. Expression of pmrH, pmrC, mgrB and phoP genes was measured using quantitative real-time PCR. LPS silver staining and conjugation assay were performed to analyze the three clinical colistin-resistant isolates. Results: Amino acid substitutions in PmrA (G53V), PmrB (T157P, R256G), MgrB (F44C) and CrrB (E189K) were detected. ISkpn14 and IS5-like insertion sequences were detected in FK713R and FK729R, respectively. FK1149, FK1920 and FK1934 were negative for mcr genes. Compared with the wild-type strain, expression of pmrH and pmrC genes at the transcriptional level was increased in all investigated isolates. Changes in the expression of phoP and mgrB genes were also observed. A partial deletion of LPS was identified in FK1149. Conclusion LPS modification induced by inactivation of PmrAB or MgrB is the main molecular mechanism of colistin resistance in K. pneumoniae isolates in this study. Mutations in PmrA (G53V), MgrB (F44C) and CrrB (E189K) that might be related to colistin resistance are detected for the first time in clinical isolates of K. pneumoniae.