1.Analysis of Bailing capsule combined losartan for UMA and lipid metabolism in patients with early diabetic nephropathy
Chinese Journal of Biochemical Pharmaceutics 2016;36(12):144-146,150
Objective To study the Bailing capsule combined losartan for UMA and lipid metabolism in patients with early diabetic nephropathy impact analysis.Methods 118 patients with early diabetic nephropathy from October 2015 to May 2016 in our hospital, according to the random lottery was divided into observation group and control group, control group using losartan treatment, observation group on the basis of the combination of Bailing capsule for treatment.Two groups of patients were treated after 3 months, observing two groups of patients with UMA and lipid metabolism related situation, and analyzes the effect of the treatment.Results The UMA ( 125.00 ±44.00 ) mg/24 h and UAER ( 54.64 ±17.31 )μg/min were significantly lower in the observation group than in the control group UMA (216.00 ±46.00) mg/24 h, UAER (67.42 ±21.86) μg/min, 2 group difference was statistically significant (P<0.05).The total cholesterol (TC) of the observation group was (6.15 ±0.75) mmol/L, triglyceride (TG) was (2.34 ±0.48) mmol/L, low density lipoprotein (LDL-C) was (3.55 ±0.73) mmol/L.The levels of TC (6.74 ±0.78) mmol /L, TG (3.01 ± 0.41) mmol/L and LDL-C (4.06 ±0.64) mmol/L, respectively.The levels of TC, TG and LDL-C in the observation group were significantly lower than those in the control group, and high-density lipoprotein (HDL-C) (1.39 ±0.26)mmol/L was significantly higher than that in the control group (1.26 ±0.42) mmol/L, the difference was statistically significant (P<0.05); Two groups of patients after treatment, the observation group total effective rate was 89.7%, significantly higher than that of control group total effective rate 75.0%, two groups are significant difference (P<0.05). Conclusion Bailing capsule combined losartan treatment of early diabetic nephropathy , can effectively reduce the levels of UMA, improve blood lipid in patients with blood sugar levels, which has significant therapeutic effect.
2.Use of animal models of atrial fibrillation in the study of cellular and molecular therapy
Jiayuan HUANG ; Jian WU ; Fenghua YANG ; Can CHEN
Acta Laboratorium Animalis Scientia Sinica 2015;(2):205-208
Atrial fibrillation ( AF) is an abnormal heart rhythm characterised by rapid and irregular beating.It is caused by multiple factors and can lead to ischemia-associated thrombosis, heart failure and other complex symptoms. Based on the etiology and characteristics of AF, animal models have 3 main categories including electrical, neurohormonal or vessel-related, and structural remodeling models.New technologies such as microRNA knock-down/overexpression or CRISPR-Cas9 gene editing provide tools for constructing animal AF models and directions in the development of AF thera-peutic strategies.Currently these strategies have largely focused on the cellular and molecular therapeutics rather than tradi-tional invasive electrophysiological methods or antiarrhythmic drugs.With the aid of new tools, progress has been greatly made in a broad range of therapeutic research areas including molecular mechanisms, drug targeting and screening.This re-view summarizes the animal models of atrial fibrillation currently used in studies of the molecular and cellular therapeutics and notes their contributions to this research area.
3.Effects of intracranial co-infusion of Aβ_(1-42) and thiorphan on Macaca Rhesus hippocampal formation
Wende LI ; Yue WU ; Fangui MIN ; Zhuo LI ; Jiayuan HUANG ; Ren HUANG
Chinese Pharmacological Bulletin 2010;26(2):186-190
Aim To observe the change of amyloid, acetylcholine transferase and glial fibrillary acidic protein expression in Macaca Rhesus hippocampal after infused the Aβ_(1-42) and thiorphan and explore the possibility of the establishment of Macaca Rhsus AD model in brain.Method The Rhesus monkeys were anesthetized (im), the skull was exposed by a midline scalp incision, and oriented craniotomy was performed on left side by dental drill.First, neprilysin in cerebral cortex and basal nucleus was consumed by infusion thiorphan. Then cerebral cortex and basal nucleus were slowly infused with fibrilla Aβ_(1-42). Finally, the cannula for thiorphan infusion was implanted into the basal nucleus.Miniosmotic pump (Alzet MODEL 2ML4,) was subcutaneously fixed by bio gel 454 on the calvaria (Loctite Co. Ltd,USA) according to the manufacturer's instructions.After 50 days' survival, animals were deep anesthetized with ketamine and sacrificed. The pathological changes were observed by HE staining and immunostaining in monkey brains.Result Neuronal loss and a proliferation of microglia were detected in hippocampal formation by HE staining.Immuno-staining showed Aβ_(1-42),ChAT and GFAP positive cells density were 0.59±0.05,0.21±0.04 and 0.19±0.04 separately.Compared with control group, the density in experimental groups showed distinct difference in statistic analysis (P<0.01).Conclusion The same pathological change was detected in the thioaphan and Aβ_(1-42) infusion in Macaca Rhesus hippocampal formation as what was found in AD patients.
4.Analysis of hematological and biochemical parameters of heterozygous SGT-deficient mice in young and elderly ages
Quliang GU ; Ren HUANG ; Yihe KUAI ; Jiayuan CHEN ; Lingyun ZHENG ; Lijing WANG
Chinese Journal of Comparative Medicine 2017;27(6):22-26
Objective To study the effect of heterozygous deficiency of SGT gene on the hematological and biochemical parameters of mice in young and elderly ages.Methods Blood samples were analyzed for complete hematological and biochemical parameters from heterozygous SGT-deficient and wild-type mice of 10-weeks and 6-months old mice, respectively.Results Age-related changes in most indexes were found statistically significantly different between young and elderly mice with the same genotype.Compared with the wild type at the same age, the platelet large cell ratio (P-LCR) was lower in young heterozygous SGT-deficient mice.However, platelet count, plateletcrit (PCT) and neutrophil count were more significantly lower in elderly heterozygous SGT-deficient mice (P<0.05).There was no significant difference for biochemical parameters ALT, AST, LDH, urea nitrogen, creatinine and blood glucose.Total and unconjugated bilirubin as well as ALP were significantly higher in elderly heterozygous SGT-deficient mice but not for conjugated bilirubin (P<0.05).In addition, significant differences existed for the lipids between two elderly groups (P<0.05).Conclusions Heterozygous deficiency of SGT gene induced changes of some hematological and biochemical parameters in elderly mice.It provides helpful information for further investigation on SGT involvement in some biological and pathological processes.
5.High-risk human papillomaviral infection characterized by pseudocondyloma of vulvae
Juan XU ; Jing WANG ; Xuedong LU ; Qin HE ; Jiayuan CHEN ; Li XIANG ; Xiameng HUANG
Chinese Journal of Dermatology 2009;42(5):303-304
Objective To investigate the clinical features and human papillomavims (HPV) types in 12 cases of HPV infection characterized by pseudocondyloma of vulvae. Methods Twelve women, who had a history of sexual behavior with non-spouses and presented with pseudocondyloma of vulvae, were included in this study. Tissue specimens were scraped or resected from the lesions of pseudocondyloma of vulvae. PCR-based reverse hybridization assay was performed to determine the genotypes of HPV. Results All the 12 specimens were HPV positive. The reverse hybridization assay generated 13 subgenotypes of HPV, including 3 low-risk genotypes (11, 42 and 43) and 10 high-risk genotypes (16, 18, 31, 33, 35, 39, 51, 52, 58 and 59). All the patients were found to be infected by at least one high-risk genotype. Of the 12 patients, 4 were infected by single type of HPV, 6 by 2 types of HPV, and 2 by 3 or 4 genotypes of HPV. Conclusion The patients characterized by pseudocondyloma of vulvae may suffer from high-risk HPV infection.
6.Advances in the application of finite element method in the study of spine biomechanics
Yuxing YE ; Jiayuan LIU ; Dageng HUANG
International Journal of Surgery 2021;48(7):499-504
Finite element method (FEM) is a method to decompose a large complex problem into several small problems to solve it. With this method, multiple small elements can be used to simulate the real physical system, which greatly promotes the development of biomechanics. Biomechanics has always been a hot research direction in spine surgery, and the finite element method is also widely used in spine biomechanics. It can simulate the healthy spine on the computer and study the stress of normal spine in various states, so as to provide help for the study of basic stress of spine.It can simulate the spinal column of pathological changes and degenerative changes, and study its stress in various scenarios, so as to provide direction for the treatment of diseases. Different surgical methods can be simulated to study the stress of the spine and internal fixation after different surgical methods, so as to select the best surgical method for patients; At the same time, it can also simulate different implants and study the stress of different implants in vivo and in vitro, so as to provide guidance for the selection of intraoperative implants and the upgrading and optimization of implants.This paper mainly discusses the application and progress of finite element method in spine surgery, and provides more references for the future study of spine biomechanics and clinical treatment of spine surgery.
7. The study on behaviour of protective equipment utilization of workers exposed to benzene and factors based on Planned Behavior Theory
Jiayuan HUANG ; Chundi LIU ; Weimin ZHANG ; Yankang FU ; Haiyan MA
Chinese Journal of Industrial Hygiene and Occupational Diseases 2018;36(2):136-139
Objective:
To investigate and predict the behavioral intention and mode of the protective equipment utilization selection of the workers who used Benzene, the Theory of Planned Behavior (TPB) was applied to establish the behavioral model to enhance the theoretical foundation for long-term intervention.
Methods:
Questionnaires were used to survey the 707 workers, and all the behaviors of using protective equipment were investigated. Evaluate the relationships between each variable and obtain the influence affects by structural equation model.
Results:
The investigation showed that 38.47% of the total workers (272 cases) used whole body protection, 13.58% used partially, and 16.69% didn't use any body protection. There were significant difference between the varying degrees in the four dimensions (behavioral attitude, perceived behavior control, subjective norm, and behavioral intention) (P<0.01) . The results of structural equation model revealed that perceived behavior control was the most important influencing factor, subjective norm, positive attitude, negative attitude were the other three respects in sequence. The path co-efficient were 0.600、0.215、0.141 and 0.046 respectively.
Conclusion
The study show that the theory of planned behavior can effectively explain the behavioral intention and behavior of protective equipment utilization. Therefore, combining the subjective initiative of individuals with the supervision of enterprises, In order to effectively enhance the protective equipment utilization of benzene workers.
8.Gene expression and characterisation of three pullulanases from Bacillus cereus GXBC-3.
Meirong LI ; Xiaobo WANG ; Ying HUANG ; Jianli HUANG ; Jiayuan LIANG ; Ribo HUANG ; Liqin DU ; Yutuo WEI
Chinese Journal of Biotechnology 2012;28(4):466-475
Exploring excellent new pullulanase genes, and enriching pullulanase theory are of great importance to realize the industrialization of pullulanase. Three genes, pulA, pulB and pulC, encoding pullulanases, were cloned from Bacillus cereus GXBC-3 by bioinformatics analyzing the open reading frame in Bacillus cereus, annotated as putative I and II pullulanases in the GenBank database. Characteristics of these recombinant enzymes were inducible intracellular expressed in Escherichia coli, the results showed PulA was typical II pullulanase. Recombinant PulA could hydrolyze alpha-1,4- and alpha-1,6-glycosidic bonds. Its specific activity was 32.89 U/mg with an optimum temperature of 40 degrees C and optimum pH 6.5 using pullulan as substrate. And for soluble starch substrate, its specific activity was 25.71 U/mg with an optimum temperature of 50 degrees C and optimum pH 7.0. PulB and PulC were I pullulanases and only hydrolyzed alpha-1,6-glycosidic bond. The specific activities, optimum temperature and optimum pH of PulB and PulC for pullulan substrate were 228.54 U/mg, 45 degrees C, 7.0 and 229.65 U/mg, 45 degrees C, 6.5, respectively.
Bacillus cereus
;
enzymology
;
genetics
;
Cloning, Molecular
;
Escherichia coli
;
Glucans
;
metabolism
;
Glycoside Hydrolases
;
genetics
;
metabolism
;
Recombinant Proteins
;
genetics
;
metabolism
9.Establishment of a myocardial infarction model and the gene expression profile in peri-infarct area in Juema minipigs
Weijiang TAN ; Jing WANG ; Xiang LI ; Xiaohui LI ; Qian LEI ; Jiayuan HUANG ; Baoyong GONG ; Jing LI ; Zhiying CHEN ; Jian WANG ; Xiaohong CHEN ; Xilong WANG ; Fenghua YANG ; Ren HUANG
Acta Laboratorium Animalis Scientia Sinica 2016;24(6):558-566
Objective To establish a Juema minipig model of myocardial infarction, to evaluate the clinical indi?ces in the model pigs, and to explore the relationship between gene expression and metabolic decompensation. Methods 13 male Juema minipigs were randomly divided into control (Sham, n=5), myocardial infarction (MI, n=5) and normal control (for evaluating the recovery condition after surgery, n=3) groups. In the MI group, the ligation was done at the left descending coronary artery around the 1/3 distance to heart apex. Four weeks after the surgery, the cardiac function and serum biochemistry was analyzed. The histological changes and gene expression profiles in the myocardium in the peri?infarct area were exanimated. Results Ultrasonic images showed that the infarction was formed, the ejection fraction and fraction shortening were significantly reduced in the MI group ( ~32% and ~40% less than those of the sham group). Histological examination showed that myocardial fibers at the peri?infarct area were broken, dissolved, and there was con?nective tissue hyperplasia with increased neutrophil and lymphocyte infiltration. Microarray analysis revealed that two myo?cardial remodeling and pathology mediating pathways, three inflammation?related pathways, and 8 metabolic pathways ( in?cluding fatty acid, amino acid, and glucose metabolic pathways) were significantly changed. Conclusions We have suc?cessfully established a Juema minipig model of myocardial infarction. The less branches of the left descending coronary ar?tery allow us to establish a stable model by surgery with comparable characteristics in the clinic indices. The results of this study provides useful reference characteristics of an animal model with characteristic changes in the peri?infarct area.
10.Accuracy and direct medical cost of different screening modalities for breast cancer among Chinese women.
Min KANG ; Ying ZHAO ; Yuan HUANG ; Jiayuan LI ; Lianhua LIU ; Hui LI
Chinese Journal of Oncology 2014;36(3):236-240
OBJECTIVETo evaluate the accuracy and direct medical cost of different screening modalities of physical examination (PE), mammography (MAM), and high-frequency ultrasonography (US) for breast cancer among Chinese women.
METHODSThis study was designed as a blindly carried outcom parative parallel screening trial for breast cancer among Chinese women aged 35 years or older. Physical examination was conducted with the subjects in the first round of breast cancer screening. The negative cases were followed up approximately 1 year later and moved into the second round of screening. Using the results of biopsies and 1-year follow-up as the gold standards, the accuracy and cost indexes of different screening modalities were calculated. Data were analyzed by McNemar test.
RESULTSA total of 2 471 eligible women were included in this trial, and 14 breast cancers were identified among them. Mammography enabled to detect 11 cancers, high-frequency ultrasonography detected 9 cancers and physical examination detected 8 cancers. Considering the three modalities separately, MAM identified the fewest suspicious cases (52 cases) and detected the most cancers (11 cases). Using US alone at the first stage, followed by MAM when indicated, offered the highest specificity (99.7%)and correct positive predictive value (11.4%), meanwhile the sensitivity was 78.6%, and the mean costs of the screening modality in urban and rural areas were 291, 210 yuan and 886,050 yuan per cancer case detected.
CONCLUSIONSThe strategy of screening with US alone at the first stage, followed by MAM when indicated, may be the most suitable modality of breast cancer detection in most regions of China, but the cost is still too high to develop the breast cancer screening in some low incidence regions with limited health resources.
Adult ; Breast Neoplasms ; diagnosis ; economics ; China ; Early Detection of Cancer ; economics ; methods ; Female ; Follow-Up Studies ; Humans ; Mammography ; economics ; Middle Aged ; Physical Examination ; economics ; Sensitivity and Specificity ; Ultrasonography, Mammary ; economics