A fungus CQ31 isolated from soil samples was identified as Chaetomium sp.. This strain produced effectively xylanases utilizing several liguocellulosic materials in the solid-state fermentation (SSF), and corn straw was the best carbon source. The results of single-factor-experiment showed that the corn straw as the carbon source, tryptone as the nitrogen source, initial moisture content of 80% and initial pH 9.0 were the optimal conditions for xylanase production. Under the optimized conditions, it produced xylanase which was 4897 U/g dry substrate while mannanase was 803 U/g dry substrate after 7 days of cultivation. Therefore, xylanase and mannanase production by Chaetomium sp. CQ31 in SSF possess potential for commercial applications.

Diabetic nephropathy ( DN) is one of the most serious chronic complications of diabetes and it is the main reason leading to end-stage renal disease.Epidemiological studies have shown that genetic susceptibility is one of the important factors in the development of DN . Regions coded by exon 4 of apolipoprotein E ( ApoE ) gene involved in lipid metabolism , which is considered to be a candidate susceptible gene for diabetic nephropathy .Articles on the relationship of APOE and diabetic nephropathy including case-control study , prospective follow-up study and meta-analysis are reviewed , and the conclusion suggests that APOE E2 allele may be one of the genetic risk factors for DN , and APOE E4 allele may be a protective factor.APOE may play its role in the development of DN through the participation in the lipid metabolism, regulation of cell growth factor activity in extracellular matrix and regulating gene expression in kidney protection and other aspects .However, the detailed mechanism of APOE polymorphism in diabetic nephropathy is unclear and needs further research .

The cloning and expression of a?-galactosidase gene(TM_0310)from Thermotoga maritima MSB8 was studied.The gene consists of 2019 bp,and the translated protein encodes 672 amino acids and its molecular mass is approximately 78.972 kD.The homology analysis of the deduced amino acid sequences showed that the enzyme shared 95%identity with a putative?-galactosidase from Thermotoga petrophila RKU-1 and a?-galactosidase from Thermotoga sp.RQ2.The galactosidase activity was up to 2.08 U/mg after the recombinant E.coli BL21 was induced by IPTG.The crude lysate remained about 70%activity after treated at 80℃for 10 min,indicating that the recombinant enzyme is thermostable and may be used at high temperatures.

Objective To study the correlation between serum homocysteine ( Hcy ) level and C677T polymorphism of methylenetetrahydrofolate reductase ( MTHFR ) gene C677T polymorphism ( rs1801133) in patients with cerebral infarction, and feature of rs1801133 polymorphism and serum Hcy level in cerebral infarction patients with or without diabetes mellitus.Methods Case-control study.Five hundred and fifty six patients with cerebral infarction admitted to China-Japan Friendship Hospital from January 2014 to January 2015 were included as the case group while 275 subjects from medical examination center without cerebral infarction and diabetes mellitus matched with the case group.MTHFR C677T polymorphism was determined by pyrosequencing and serum Hcy was determined by circulating enzymatic.Chi-square test was used to analyze the distribution of genotype in different group; ANVOA was used to analyze the Hcy level with different genotype in patients with cerebral infarction, and LSD-t was used to pairwise comparison.Results Among the 556 patients with cerebral infarction ,TT genotype were 202 cases (36.33%), CT genotype were 257 cases(46.22%), CC genotype were 97 cases(17.45%).The T allele 44%, higher than the control group T allele frequencies 46.91%(χ2 =23.385,P<0.001).The level of TT genotype serum Hcy level (21.31 ±17.31) μmol/L were higher than CT genotype (14.88 ±7.71) μmol/L(P<0.001)and CC genotype(14.48 ±7.78) μmol/L(P<0.001).There is no significant statistics different in TT genotype frequency between Cerebral infarction patients with diabetes mellitus(36.77%) and without diabetes mellitus(36.44%) (χ2 =0.031,P>0.05), while the level of serum Hcy in Cerebral infarction patients with diabetes mellitus ( 18.16 ±12.90 )μmol/L is lower than Cerebral infarction patients without diabetes mellitus(23.47 ±19.53) μmol/L in TT genotype( F=4.652, P<0.05).Conclusions MTHFR TT genotype was related to serum hyperhomocysteine, and maybe save as the risk of cerebral infarction.The Hcy level in TT genotype cerebral infarction patients with DM is lower than the same genotype patients without DM.(Chin J Lab Med, 2016, 39:205-209 )

Objective To study the expression and the relation of vascular endothelial growth factor (VEGF)and matrix metal proteinase-2(MMP-2)in rectal cancer and evaluate their roles in rectal carcinogen- esis and development.Methods The expression of VEGF and MMP-2 in 52 cases of rectal cancer was de- tected by immunohistochemical SP technique.12 cases normal rectal tissue served as the control group.Re- suits The expression of VEGF in rectal carcinoma(67.3 %)was much higher than that in control group(P

Objective To explore the ameliorative effects of standardized tertiary rehabilitation(STR)on the quality of life(QOL)of stroke patients with hemiplegia.Methods Eighty-two stroke patients were randomly divided into two groups:a rehabilitation group(R group)and a control group.All patients were given routine inter- nal medicine treatment,but STR was also administered to the R group.The QOL of all of the patients was assessed with the brief scale of quality of life(QOL-BREF)at the beginning,and at the end of the Ist month,3rd month and 6th month after stroke.Results There were two deaths in the control group,but no deaths in the R group.At ever- y stage,the R group returned better scores for physiological health,psychological state,social and environment rela- tionships,the subjective QOL and health items,and in comprehensive self-evaluation.QOL scores,except for social relationships,were consistently,significantly higher in the R group.The R group's QOL scores improved obviously in the first 3 months after stroke,and then more slowly in the next 3 months.Conclusions STR markedly improved the QOL of stroke patients.Their QOL scores improved obviously soon after stroke,but slowly later on.

OBJECTIVETo evaluate the feasibility and safety of total colonic exclusion plus side to side antiperistaltic ileorectal anastomosis in the treatment for elderly patients with slow transit constipation (STC).

METHODSClinical data of 13 patients with severe idiopathic STC undergoing the above novel procedure in Zhongnan Hospital of Wuhan University between May 2009 and September 2012 were retrospectively analyzed. The Wexner constipation score and gastrointestinal quality of life index (GIQLI) before and 6 months after operation were compared.

RESULTSThere were 8 female and 5 male patients, with a mean age of 74 years (range 63-82 years). No procedure-related deaths or any serious complication occurred. The length of follow-up ranged from 6 to 29 months (median,12 months). The duration of surgery was (55±4) min. Blood loss was (30±2) ml. The postoperative hospital stay ranged 10 to 16 days (mean 11.4 days). The first bowel movement occurred in the 4th day (range 2nd-8th day) after operation. There was no intestinal occlusion and anastomotic leakage that required surgery in all the patients. No fecal incontinence or constipation recurrence was found. One patient developed blind loop syndrome 14 months after operation. Postoperative complications included incision fat liquefaction in 2 cases, anorectal bearing-down while bowel movement in 2 cases, and minor defecate difficulty needed glycerin enema in 1 case. Wexner scores was significantly improved from 22.8±3.3 before operation to 5.4±2.1 six months after operation (P<0.05). GQLI was significantly increased from 93.6±20.5 before operation to 120.8±13.0 six months after operation (P<0.05). At 6 months after operation, the outcome was excellent in 11 patients and good in 2 patients.

CONCLUSIONTotal colonic exclusion plus side to side antiperistaltic ileorectal anastomosis is easy, safe and effective in the treatment for selected elderly patients with STC.

Aged ; Aged, 80 and over ; Anastomosis, Surgical ; methods ; Colon ; surgery ; Constipation ; surgery ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Retrospective Studies

Abdominal Wall ; Adenocarcinoma ; diagnosis ; Colonic Neoplasms ; diagnosis ; Female ; Histiocytoma, Malignant Fibrous ; diagnosis ; Humans ; Ileal Neoplasms ; diagnosis ; Ileocecal Valve ; Leiomyoma ; diagnosis ; Middle Aged ; Neoplasms, Multiple Primary ; diagnosis ; Soft Tissue Neoplasms ; diagnosis ; Uterine Neoplasms ; diagnosis

OBJECTIVETo investigate the feasibility of bone marrow mesenchymal stem cells(MSC)with the acellular dermal matrix(ADM) biological patch for the treatment of external anal sphincter injury on the animal models.

METHODSThirty Wistar rats with sphincter injury were randomly divided into three groups. Group A underwent end to end sphincteric repair directly, group B underwent end to end repair and then covered by ADM patch, and group C underwent end to end repair and then covered by ADM which was previously seeded with MSC. After six weeks, the whole ring specimens including anal canal and lower rectum were removed. The hematoxylin and eosin stain and Masson trichrome stain were performed to observe the change of histomorphology.

RESULTSTwo weeks later, the majority of rat models presented with moist anus and crissum with loose stools, which indicated that the model was established successfully. Six weeks after repair, in group A and B, the suffusion of fibrous connective tissue and the infiltration of inflammatory cells were observed at the repair site of sphincter. And lots of collagen fiber which was stained into blue deposited dispersedly at the site of repair with no obvious proliferation of capillaries. However, in group C, the blue collagenous fiber which deposited at the sphincter injury site was less than that in groups A and B. Muscle fibers were observed to be stained into red distributed dispersedly at the repair site of sphincter in group C.

CONCLUSIONSTransplantation of ADM biological patch rich in bone MSC can partly improve the regeneration of rat injured anal sphincter and lessen the formation of cicatrix.

Acellular Dermis ; Anal Canal ; injuries ; surgery ; Animals ; Bone Marrow ; Mesenchymal Stem Cell Transplantation ; Rats ; Rats, Wistar ; Wound Healing

Objective To explore the interaction of angiotensin converting enzyme (ACE) insertion/deletion(I/D) polymorphism(rs1799752)with diabetic kidney disease (DKD) development as well as its interaction with smoking and obesity in Chinese type 2 diabetic mellitus (T2DM) using the improved experiment method. Methods From June 2016 to March 2018, 300 T2DM patients with DKD [DKD(+)] and 300 T2DM patients without DKD[DKD(-)] were selected from China-Japan Friendship Hospital. The improved Triple Primer Method that combined PCR with capillary electrophoresis was established in this study to detect the ACE genotype. The relevant clinical data as well as the frequencies of genotype and allele of ACE gene I/D polymorphism between two groups were statistically analyzed. Patients were further grouped based on smoking status and obesity for multivariate regression. Results Frequency of the DD genotype and D allele were significantly higher in DKD(+) group than in DKD(-) group [DD genotype:15.0％ (45 cases) vs 7.3％(22 cases),χ2=10.8, P=0.004;D allele:36.5％(219 cases) vs 28.0％(168 cases),χ2=9.92, P=0.02]. Multivariate logistic regression analysis found that D allele of rs1799752 was associated with a significantly higher risk of DKD in both recessive model(OR=1.45, 95％CI:1.06-2.00, P=0.022 after adjustments) and additive model(OR=1.41, 95％CI:1.04-1.90, P=0.025 after adjustments). In the smoker group and the obese group, D allele showed significant relationship with DKD incidence (P<0.05 after adjustments) in both recessive model and dominant model. No such relationships were observed in non-smoker group and non-obese group (P>0.05). Conclusions I/D polymorphism of ACE gene is associated with the incidence of DKD in T2DM patients. DD genotype of the ACE gene is the risk factor for T2DM patients with DKD. D allele may increase DKD incidence in the presence of smoking and obesity.