Humans ; Occupational Diseases ; prevention & control ; Social Responsibility

Humans ; Occupational Health Services ; Transients and Migrants

OBJECTIVE: To establish a method combining triterpenoids fingerprint with chemometric analysis based on reference drug, and determine 89 batches of samples to evaluate the quality of Ganoderma preparations. METHODS: The samples were extracted by ultrasonic with methanol, chromatography was performed on Agilent TC C18(2) column (4.6 mm×250 mm, 5 μm) with gradient elution with acetonitrile and 0.02% phosphoric acid aqueous solution. The detection wavelength was set at 254 nm. Principal component analysis and HCA heatmap were used for data analysis. RESULTS: The chromatographic fingerprint has 56 characteristic peaks. By comparing the samples with the reference drug, it was found that Ganoderma preparations were produced using Ganoderma lucidum by almost all manufacturers. Principal component analysis, HCA heatmap analysis and similarity analysis divided the samples into three categories. The first type had characteristic peaks and peak areas which were consistent with the reference drug, and the quality was better. The second type had characteristic peaks which consistent with the reference drug, but the peak areas were smaller and the quality was medium. And the third type was different from the reference drug, which was the problem sample. The strong characteristic peaks for classification of different samples were peak 26, peak 31, peak 24, peak 32 and peak 18. CONCLUSION: The method is comprehensive, accurate and specific, and it can be used for comprehensive quality evaluation of triterpenoids in Ganoderma preparations.

Adult ; Ear Protective Devices ; Female ; Hearing Loss ; prevention & control ; Humans ; Male ; Middle Aged ; Noise, Occupational ; adverse effects ; Occupational Diseases ; prevention & control

Genetic Techniques ; Genomics ; Humans ; Nucleic Acid Amplification Techniques ; Nucleic Acid Hybridization ; Sequence Analysis, DNA ; Viruses ; genetics ; isolation & purification

Objective To study the distribution of variable number tande repeat(VNTR) polymorphisms of the platelet membrane glycoprotein Ⅰ b? in Han nationality at Harbin and the relationship between these polymorpbisms and cerebral infarction(CI).Methods The identification of alleles and genotypes of VNTR polymorphism of the glycoprotein Ⅰ b? gene was performed by polymerase chain reaction (PCR)in 200 healthy individuls and 200 CI patients(77 lacunar infarction patients and 123 atherosclerotic thrombotic infarction patients),to analyze The relationship between gene polymorphisms and cerebral infarction.Results(1)There were three types of alleles:B、C、D,and five types genotypes:BC,BD,CC, CD,DD in Harbin Han nationality.No person with A allele and BB genotype was found.(2)No statistically significant differences of GP Ⅰ b? gene VNTR polymorphism was found between CI patients or subtype CI patients and controls(P=0.412 and 0.572,respectively).Conclusions(1)This study indicates that the C and D alleles of VNTR polymorphisms of GP Ⅰ b? are the main alleles while the CC and CD genotypes are the main genotypes in Harbin Han people.(2)Our findings indicate that no association exists between the VNTR polymorphism of platelet GP Ⅰ b? gene and CI.

OBJECTIVE: To propose a holistic strategy for quality control of Chinese patent medicines, and establish an HPLC analytical method for Tongzhi Surunjiang preparation according to the strategy. METHODS: The strategy contained three steps.The first step was multi-wavelength chromatographic detection.The second step was multivariate analysis for identification and assay. The third step was to establish substitute reference substance method.The preparations were extracted by ultrasound with methanol, chromatography was performed on ODS column with gradient elution with acetonitrile and 0.1%phosphoric acid aqueous solution.The detection wavelengths were set at 270, 350, 410 and 440 nm.The radar chart, HCA heatmap, principal component analysis and cosine similarity were used for data analysis.At last, linear calibration using two reference substances, relative retention time method and PDA spectrum method were used for peak identification, and relative correction factor method was used for quantitative analysis. RESULTS: The multi-components determination method and fingerprint analysis met the method validation requirements. Data analysis showed that there were some differences among the samples of different manufacturers. Strong characteristic peaks for classification were gallic acid, chebulinic acid, chebulea fructus, sennae folium, sennae folium and crocin.CONCLUSION: The method is specific, with low cost, and could be used to accurately control the quality of Tongzhi Surunjiang preparation.

Objective To investigate the thermal effects on tissue structures during microwave endometrial ablation(MEA)and seek a feasible method of endometrial thinning and a fitting mode of applicator radiating microwaves.Methods Operations were performed between the group of thorough uterine curettage and the group of early follicular phase in in vitro or in vivo uterus.The former was treated with MEA after thorough uterine curettage;while the latter was treated with MEA in the early follicular phase directly.The applicator radiating microwaves were moved in "Z" or "Z+W" shape inside uterine cavity.At the same time the serosal temperature was measured in the uterine fundus,tael cornua uteri,the posterior wall and the lower part of anterior wall.After operations the uterine specimens were stained by hematoxylin- eosin,and respiratory enzyme dehydronicotinamide adenine dinucleotide phosphate diaphorase(NADH-d) methods.The morphologic changes and the depth of tissue thermal damage were evaluated using an optical microscope and electron microscope.Results(1)Under the optical microscope the endometrial glands became distorted,the cell boundaries disappeared,the nucleoli turned condensed and were stained darker. A large number of acute inflammatory cells appeared in fibrous tissue.In the shallow muscle layer cells were arrayed thickly,nucleoli were solidified and condensed,and cellular plasm were concentrated.The endometrial and the superficial muscle layers were damaged and colorless with NADH-d staining.The scope of the tissue thermal damage was clearly seen.Under an electron microscope,some smooth muscle ceils, chromatin,karyotheca and cellular membranes were destroyed.The mitochondria were swollen,membranes were ruptured,and the crista disappeared.Many organelles were destroyed.The chromatin was lightly wrecked in the transitional area between putrescence and the normal smooth muscle tissue.Karyotheca and cellular plasm still existed,the mitochondria were highly edematous and the crista were disappeared,and the granular endoplasmic reticula were slightly expanded and degranulated.(2)The serosal temperature in in vitro uterus was significantly higher than that in in vivo uterus(P0.05).The injury depth of the "Z+ W" radiation group increased significantly than that of the " Z" radiation group(P

Abdominal Cavity ; Adult ; Anemia, Aplastic ; therapy ; Antigens, CD34 ; metabolism ; Carcinoma ; metabolism ; pathology ; Dendritic Cell Sarcoma, Follicular ; metabolism ; pathology ; Diagnosis, Differential ; Hematopoietic Stem Cell Transplantation ; adverse effects ; Humans ; Ki-67 Antigen ; metabolism ; Lymph Nodes ; pathology ; Male ; Neoplasms, Muscle Tissue ; metabolism ; pathology ; Platelet Endothelial Cell Adhesion Molecule-1 ; metabolism ; Sarcoma, Kaposi ; etiology ; metabolism ; pathology ; Viral Proteins ; metabolism

Objective To study reliability and validity of incontinence impact questionnaire short form (IIQ-7) in the Chinese population. Methods IIQ-7 form was translated into Chinese; 74 patients with urinary incontinence completed the IIQ-7 simplified Chinese version and short-form 12-item health survey (SF-12) questionnaires. The urinary incontinence patient also ran a 1 hour pad test. Then, reliability and validity of those forms were analyzed. Results The Cronbach's alpha of IIQ-7 simplified Chinese version was 0. 824 (P <0. 01). The intra-class correlation coefficient of IIQ-7 simplified Chinese version was 0. 749 (P < 0.01) . IIQ-7 simplified Chinese version scores were negatively correlated with SF-12 scores (Spearman correlation coefficient: - 0. 570, P < 0. 01) , IIQ-7 simplified Chinese version scores were positively correlated with 1 hour pad test (Spearman correlation coefficient: 0.461, P < 0. 01) , IIQ-7 simplified Chinese version scores were also positively correlated with the course of disease (Spearman correlation coefficient: 0. 235 , P < 0. 05) . Factor analysis of IIQ-7 simplified Chinese version showed good construct validity. Conclusions The simplified Chinese version of IIQ-7 has higher reliability and validity in the Chinese population. They are highly recommended for clinical treatment and research.