1.Mycena subpiligera sp. nov., a Symbiotic Species from China Associated with the Seed Germination of Gastrodia elata
Li-na LIU ; Guo-ying ZHOU ; Ai-rong SHEN ; Bao-ming SHEN ; Yun TAN ; Zhu-ming TAN
Mycobiology 2022;50(5):294-301
Mycena subpiligera, a new taxon in sect. Fragilipedes that can strongly enhance the germination efficiency of Gastrodia elata seeds, was discovered in subtropical areas of China. As revealed by a morphological comparison with related Mycena species as well as maximum likelihood (ML) and Bayesian phylogenetic analyses based on sequences of the internal transcribed spacer (ITS) and the large subunit (LSU) regions of nuclear ribosomal RNA, the new taxon can be distinguished from phenotypically similar and phylogenetically related species. Optimal cultural conditions for M. subpiligera basidiomata are reported, and the germination rate of the new species is compared with that of M. citrinomarginata.
2.Analysis of metabolites of rocuronium bromide in human bile and the study of transmembrane transport mechanism
Ai-nan ZHOU ; Zi-tao GUO ; Jia-jun CHEN ; Yun-quan LUO ; Bo TAN ; Xing-xing DIAO ; Da-fang ZHONG
Acta Pharmaceutica Sinica 2022;57(8):2461-2470
Rocuronium bromide is an acetylcholine N2 receptor antagonist, which can be used as an auxiliary drug for general anesthesia. It has been reported that rocuronium has two possible metabolic pathways:
3. Effect of non-diabetic postoperative hyperglycemia on complications after pancreaticoduodenectomy
Dexing GUO ; Zhongqiang ZUO ; Hongtao TAN ; Ran WEI ; Songlin AI ; Bei SUN ; Hongchi JIANG
Chinese Journal of Surgery 2019;57(10):750-756
Objective:
To examine the association of hyperglycemia and postoperative complications in non-diabetic patients underwent pancreaticoduodenectomy(PD).
Methods:
The clinical data of 209 non-diabetic patients who underwent PD from January 2012 to June 2018 at Department of Pancreatic and Biliary Surgery, the First Affiliated Hospital of Harbin Medical University and met the inclusion criteria were retrospectively analyzed. According to the diagnostic criteria of postoperative hyperglycemia, the patients were divided into postoperative hyperglycemia group (167 cases, 79.9%) and control group(42 cases, 20.1%). The propensity score matching(PSM) method was used to eliminate the difference between groups(caliper value=0.02; 38 cases in control group including 30 males and 8 females with age of 59.0 years; 38 cases in postoperative hyperglycemia group including 32 males and 6 females with age of 61.0 years; 37 cases of pancreatic head carcinoma, 30 cases of periampullary carcinoma and 9 cases of benign diseases). A comparative analysis was applied for preoperative data, surgical related indicators and postoperative complication rates.The receiver operating characteristic(ROC) curve was used to calculate the area under the curve(AUC) of blood glucose values on postoperative day 1,3 and 5(POD1, POD3, POD5), to determine the high-risk blood glucose cutoff value of complications and to evaluate its sensitivity and specificity for the prediction of postoperative complications.
Results:
Univariate analysis showed that the differences in gender, body mass index, preoperative blood glucose, and serum urea nitrogen levels were statistically significant before PSM.There was no significant difference in the preoperative data between the two groups after PSM. Compared with the control group, the incidence of postoperative pancreatic fistula (31.6%
4.Effect of non?diabetic postoperative hyperglycemia on complications after pancreaticoduodenectomy
Dexing GUO ; Zhongqiang ZUO ; Hongtao TAN ; Ran WEI ; Songlin AI ; Bei SUN ; Hongchi JIANG
Chinese Journal of Surgery 2019;57(10):750-756
Objective To examine the association of hyperglycemia and postoperative complications in non?diabetic patients underwent pancreaticoduodenectomy(PD). Methods The clinical data of 209 non?diabetic patients who underwent PD from January 2012 to June 2018 at Department of Pancreatic and Biliary Surgery, the First Affiliated Hospital of Harbin Medical University and met the inclusion criteria were retrospectively analyzed. According to the diagnostic criteria of postoperative hyperglycemia, the patients were divided into postoperative hyperglycemia group (167 cases, 79.9%) and control group(42 cases, 20.1%). The propensity score matching(PSM) method was used to eliminate the difference between groups(caliper value=0.02; 38 cases in control group including 30 males and 8 females with age of 59.0 years;38 cases in postoperative hyperglycemia group including 32 males and 6 females with age of 61.0 years;37 cases of pancreatic head carcinoma,30 cases of periampullary carcinoma and 9 cases of benign diseases). A comparative analysis was applied for preoperative data, surgical related indicators and postoperative complication rates.The receiver operating characteristic(ROC) curve was used to calculate the area under the curve(AUC) of blood glucose values on postoperative day 1,3 and 5(POD1,POD3,POD5),to determine the high?risk blood glucose cutoff value of complications and to evaluate its sensitivity and specificity for the prediction of postoperative complications. Results Univariate analysis showed that the differences in gender, body mass index, preoperative blood glucose, and serum urea nitrogen levels were statistically significant before PSM.There was no significant difference in the preoperative data between the two groups after PSM. Compared with the control group, the incidence of postoperative pancreatic fistula (31.6% vs. 5.3%), abdominal infection(29.0% vs. 7.9%) and Clavien?Dindo Ⅲ-Ⅴ complications(31.6% vs. 7.9%) were statistically different(χ2=7.092, P=0.008; χ2=4.290, P=0.038; χ2=5.316, P=0.021), respectively. According to the AUC on POD3,the blood glucose value≥8.860 mmol/L was an independent risk factor for pancreatic fistula with sensitivity of 58.3% and specificity of 76.9%,the blood glucose value≥9.130 mmol/L was an independent risk factor for abdominal infection with sensitivity of 54.5% and specificity of 81.5% and the blood glucose value≥7.685 mmol/L was independent risk factor of Clavien?Dindo Ⅲ-Ⅴcomplications with sensitivity of 75.0% and specificity of 57.7%. Conclusions Postoperative hyperglycemia in non?diabetic patients is associated with postoperative pancreatic fistula, abdominal infection, and Clavien?DindoⅢ-Ⅴcomplications.According to the early postoperative blood glucose value,the occurrence of postoperative pancreatic fistula, abdominal infection and Clavien?Dindo Ⅲ-Ⅴ complications can be effectively predicted.
5.Effect of non?diabetic postoperative hyperglycemia on complications after pancreaticoduodenectomy
Dexing GUO ; Zhongqiang ZUO ; Hongtao TAN ; Ran WEI ; Songlin AI ; Bei SUN ; Hongchi JIANG
Chinese Journal of Surgery 2019;57(10):750-756
Objective To examine the association of hyperglycemia and postoperative complications in non?diabetic patients underwent pancreaticoduodenectomy(PD). Methods The clinical data of 209 non?diabetic patients who underwent PD from January 2012 to June 2018 at Department of Pancreatic and Biliary Surgery, the First Affiliated Hospital of Harbin Medical University and met the inclusion criteria were retrospectively analyzed. According to the diagnostic criteria of postoperative hyperglycemia, the patients were divided into postoperative hyperglycemia group (167 cases, 79.9%) and control group(42 cases, 20.1%). The propensity score matching(PSM) method was used to eliminate the difference between groups(caliper value=0.02; 38 cases in control group including 30 males and 8 females with age of 59.0 years;38 cases in postoperative hyperglycemia group including 32 males and 6 females with age of 61.0 years;37 cases of pancreatic head carcinoma,30 cases of periampullary carcinoma and 9 cases of benign diseases). A comparative analysis was applied for preoperative data, surgical related indicators and postoperative complication rates.The receiver operating characteristic(ROC) curve was used to calculate the area under the curve(AUC) of blood glucose values on postoperative day 1,3 and 5(POD1,POD3,POD5),to determine the high?risk blood glucose cutoff value of complications and to evaluate its sensitivity and specificity for the prediction of postoperative complications. Results Univariate analysis showed that the differences in gender, body mass index, preoperative blood glucose, and serum urea nitrogen levels were statistically significant before PSM.There was no significant difference in the preoperative data between the two groups after PSM. Compared with the control group, the incidence of postoperative pancreatic fistula (31.6% vs. 5.3%), abdominal infection(29.0% vs. 7.9%) and Clavien?Dindo Ⅲ-Ⅴ complications(31.6% vs. 7.9%) were statistically different(χ2=7.092, P=0.008; χ2=4.290, P=0.038; χ2=5.316, P=0.021), respectively. According to the AUC on POD3,the blood glucose value≥8.860 mmol/L was an independent risk factor for pancreatic fistula with sensitivity of 58.3% and specificity of 76.9%,the blood glucose value≥9.130 mmol/L was an independent risk factor for abdominal infection with sensitivity of 54.5% and specificity of 81.5% and the blood glucose value≥7.685 mmol/L was independent risk factor of Clavien?Dindo Ⅲ-Ⅴcomplications with sensitivity of 75.0% and specificity of 57.7%. Conclusions Postoperative hyperglycemia in non?diabetic patients is associated with postoperative pancreatic fistula, abdominal infection, and Clavien?DindoⅢ-Ⅴcomplications.According to the early postoperative blood glucose value,the occurrence of postoperative pancreatic fistula, abdominal infection and Clavien?Dindo Ⅲ-Ⅴ complications can be effectively predicted.
6.Prokaryotic expression and preparation of the polyclonal antibodies of E protein and domain Ⅲ in Zika virus
Chen-Xi DING ; Xu-Hui ZHU ; Le-Le AI ; Fu-Qiang YE ; Wei-Long TAN ; Dan HU ; Jia-Feng CHEN ; Xiao-Lu GUO ; Xiu-Zhen PAN ; Chang-Jun WANG
Chinese Journal of Zoonoses 2018;34(1):23-28
To clone,express and purify the E Protein and EDⅢ of Zika virus in E.coli and prepare two kinds of polyclonal antibodies,the virus was amplified by Vero E6 cell culture.Total RNA was extracted by RT-PCR and reverse transcribed into cDNA.The prokaryotic expression vectors pET32a/E and pET28a/EDⅢ were constructed by cDNA sequence of E and EDⅢ gene.Then,recombinant plasmids were transformed into E.coli BL21 and induced by IPTG,and purified by Ni+ column affinity chromatography.BALB/C mice were immunized with purified recombinant proteins.Antiserum was collected and titer was determined by indirect ELISA.Western blot was used to detect the specificity.Results showed that the recombinant proteins were successfully expressed and purified.The titer of the polyclonal antibodies both reached 1:409 600.Western Blot analysis showed that the polyclonal antibodies could specifically recognize the recombinant proteins.Thus,the specific polyclonal antibody were successfully prepared,laying a foundation for further study on the pathogenesis,detection methods and immune strategies of Zika virus.
7.Analysis of virulence genes and the chromosomal 16S rRNA gene polymorphism of Yersinia enterocolitic in Jiangsu Province,2015
Lu ZHOU ; Chen DONG ; Hui GUO ; Yinhua WU ; Yongjie ZHANG ; Jing AI ; Ling GU ; Changjun BAO ; Minghao ZHOU ; Fengcai ZHU ; Zhongming TAN
Chinese Journal of Infectious Diseases 2018;36(1):34-37
Objective To reveal the virulence genes and the polymorphisms of chromosomal 16S rRNA gene of Yersinia enterocolitic strains isolated from different districts in Jiangsu Province,2015. Methods Five virulence genes(ail,virF,yadA,ystA and ystB)of Yersinia enterocolitic strains isolated from different districts in Jiangsu Province were detected by using polymerase chain reaction(PCR),and phylogenetic analysis of chromosomal 16S rRNA gene was performed by amplification and sequencing. Results In this study,73 Yersinia enterocolitic strains were collected in Jiangsu Province in 2015.Among them,56(76.7%)strains carried virulence genes,and ail-virF-yadA -ystA -ystB+were the dominate types in diarrhea patients and other hosts.All strains can be clustering into 4 groups according to the phylogenetic analysis of chromosomal 16S rRNA gene.Conclusions The non-pathogenic Yersinia enterocolitic(ystB+)is the dominant strain in Jiangsu province,and the pathogenic strains are also found in this region.The result of phylogenetic analysis of chromosomal 16S rRNA gene and the profiles of virulence genes are highly consistent.
8.Analysis of risk factors and the prognostic risk factors in aged patients with coronary heart disease
Ai Ling HU ; Sheng Hong ZHANG ; Qing Xi WEI ; Ling Cui JI ; Guo Jin ZHANG ; Yong Hong TAN
Chinese Journal of cardiovascular Rehabilitation Medicine 2017;26(5):467-470
Objective:To analyze risk factors and prognostic risk factors in aged patients with coronary heart disease (CHD).Methods:Clinical data of 412 aged patients,who were suspected of CHD in our hospital,were retrospec-tively analyzed.According to results of coronary angiography,they were divided into CHD group (n=283 )and non-CHD group (n=129);risk factors and prognostic risk factors for aged CHD patients were analyzed.Results:Compared with non-CHD group,there were significant rise in percentages of >80 years (13.95% vs.28.98%),di-abetes mellitus (DM,37.98% vs.66.78%)and smoking history (32.56% vs.59.72%)in CHD group,levels of to-tal cholesterol [TC,(5.06±1.53)mmol/L vs.(5.41±1.36)mmol/L],triglyceride [TG,(1.53±0.82)mmol/L vs.(2.02±0.95)mmol/L]and low density lipoprotein cholesterol [LDL-C,(2.05±0.86)mmol/L vs.(2.57 ±1.15)mmol/L],and significant reduction in high density lipoprotein cholesterol level [HDL-C, (1.65 ±0.52) mmol/L vs.(0.86±0.38)mmol/L]in CHD group,P <0.05 or <0.01. Multi-factor Logistic regression analysis indicated that age,DM,hypertension history,smoking,high total cholesterol (TC)and hypertriglyceridemia were independent risk factors for CHD (OR= 1.38 ~8.65,P <0.05 or <0.01 );while serum total bilirubin and high density lipoprotein cholesterol were independent protective factors for CHD (OR=0.224,P =0.002);multi-factor Cox model analysis indicated that smoking history,high TC and hypertension were risk factors affecting prognosis of CHD patients (RR= 1.563 ~ 2.315,P < 0.05 all).Conclusion:In clinic,attention should be paid to reduce or eliminaterelated risk factors of aged CHD patients to improve prognosis.
9.Low-dose Simvastatin Increases Skeletal Muscle Sensitivity to Caffeine and Halothane.
Xu-Lei CUI ; Ying-Lin WANG ; Gang TAN ; Ai-Lun LUO ; Xiang-Yang GUO
Chinese Medical Sciences Journal 2016;31(2):107-115
Objective To determine whether the myotoxic side effects of statin simvastatin affect skeletal muscle's sensitivity to caffeine and halothane.Methods Primary cultured neonate rat skeletal myotubes were treated with 0.01-5.0 μmol/L simvastatin for 48 hours. MTT was used to evaluate cellular viability. The gross morphology and microstructure of the myotubes were observed with a light and electron microscope, respectively. The intracellular calcium concentrations ([Ca]i) at rest and in response to caffeine and halothane were investigated by fluorescence calcium imaging. Data were analyzed by analysis of variance (ANOVA) test.Results Simvastatin (0.01-5.0 μmol/L) decreased myotube viability, changed their morphological features and microstructure, and increased the resting [Ca]i in a dose-dependent manner. Simvastatin did not change myotube's sensitivity to low doses of caffeine (0.625-2.5 mmol/L) or halothane (1.0-5.0 mmol/L). In response to high-dose caffeine (10.0 mmol/L, 20.0 mmol/L) and halothane (20.0 mmol/L, 40.0 mmol/L), myotubes treated with 0.01 μmol/L simvastatin showed a significant increase in sensitivity, but those treated with 1.0 μmol/L and 5.0 μmol/L simvastatin showed a significant decrease. The sarcoplasmic reticulum Castorage peaked in the myotubes treated with 0.01 μmol/L simvastatin, but it decreased when cells were treated with higher doses of simvastatin (0.1-5.0 μmol/L).Conclusions The myotoxic side effect of simvastatin was found to change the sensitivity of myotubes in response to high-dose caffeine and halothane. When dose was low, sensitivity increased mainly because of increased Cacontent in the sarcoplasmic reticulum, which might explain why some individuals with statin-induced myotoxic symptoms may show positive caffeine-halothane contracture test results. However, when the dose was high and the damage to the myotubes was severer, sensitivity was lower. It is here supposed that the damage itself might put individuals with statin-induced myotoxic symptoms at greater risks of presenting with rhabdomyolysis during surgery or while under anesthesia.
10.Advances in studies on chemical compositions of Atractylodes lancea and their biological activities.
Ai-Ping DENG ; Ying LI ; Zhi-Tao WU ; Tan LIU ; Li-Ping KANG ; Tie-Gui NAN ; Zhi-Lai ZHAN ; Lan-Ping GUO
China Journal of Chinese Materia Medica 2016;41(21):3904-3913
This article mainly summarises the results of the chemical compositions and its pharmacological activities of Atractylodes Radix. The chemistry components isolated from Atractylodes Radix are mainly sesquiterpenoids, enediynes, triterpenoids, aromatic glycosides, and etc. Pharmacological results showed that Atractylodes Radix has inhibition of gastric acid secretion, promoting gastrointestinal movement and gastric emptying, hpyerglycemic, antibacterial, anti-inflammatory, cardiovascular protection and nervous system activity, etc. This article hopefully to provide a reference for further research, development and utilization of Atractylodes Radix.

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