Acetates ; urine ; Chromatography, Gas ; Gas Chromatography-Mass Spectrometry ; Humans

We found that the number of institutions made use of the undocumented in vitro diagnostic reagent in the survey. The phenomenon poses some risks and problems. In use this paper, we analyzed the situation and the reasons for the use of the undocumented in vitro diagnostic reagents, and put forward the corresponding measures.
Humans ; Indicators and Reagents ; standards

In recent years, various studies and analyses related to cosmetics safety were conducted according to routine tests in Hygienic Standard of Cosmetics (2007), and the eligible rates of tested cosmetics were high. But the other prohibited and limited use components, such as antibiotics were analyzed rarely, and meanwhile some kinds of cosmetic related dermatitis cases appeared dramatically. Several dermatitis, especially contact dermatitis and hormone dependent dermatitis symptoms were not contained in Diagnostic Criteria and Principles of Management of Skin Diseases Induced by Cosmetics-General Guideline, GB 17149.1—1997. So it indicated the standard, GB 17149.1—1997 should be revised and some prohibited and limited use components such as hormone and antibiotic testing should be appended to the safety analysis of cosmetics.

BACKGROUND: Many studies focus on transforming growth factor β (TGF β) and its receptors, however, the distdbution of type Ⅰ TGF receptor (TGF-βR Ⅰ) in peripheral region of hypertrophic scars remain poorly understood. OBJECTIVE: To determine the expression and distribution of TGF-βR Ⅰ and type Ⅰ collagen in the peripheral and central areas of human skin hypertrophic scar. METHODS: A total of 30 cases with human cutaneous scars admitted at the Department of Plastic Surgery, First Affiliated Hospital and Department of Mammary Gland, Head and Neck Surgery, Tumor Hospital of Xinjiang Medical University from 1999 to 2002, were selected, including 20 cases with hypertrophic scar and 10 cases with normal scars. A total of 180 scars were obtained from central and peripheral areas of scars as well as normal skin tissues. The protein contents of TGF-βR1 and type Ⅰcollagen was detected by immunohistochemistry. In addition, the immunostaining positive in these samples was analyzed by semiquantitative analysis. RESULTS AND CONCLUSION: Compared to non hypertrophic scar and normal skin tissues, the TGF-βR1 expression of hypertrophic scar was obvious greater with strong positive reaction. The TGF-β R Ⅰ content was 100% in peripheral region of hypertrophic scar, which was notably 20% greater than that of central area (P < 0.05). The content of type Ⅰ collagen was both 100% in peripheral and central areas. The differences of positive TGF-β R Ⅰ and type Ⅰ collagen had no significance between peripheral and central areas of non hypertrophic scars (P > 0.05). There were few contents of TGF-βR Ⅰ and type Ⅰ collagen in normal skin tissues. The expression of TGF-β R Ⅰ is higher in peripheral than central areas of hypertrophic scar. Therefore, the peripheral area would be emphasized in the clinic work.

Based on the requirement of biology education development,the article analyzes the approach to improve the teaching quality of medical biology from quality education,subjiect intercrossing or 'regression' and 'outspread',and offers new ideas for education reform and innovation of the medical biology.

Accidents, Occupational ; prevention & control ; Occupational Diseases ; prevention & control ; Occupational Health Services ; organization & administration ; Risk Assessment ; methods ; organization & administration

Churg-Strauss Syndrome ; complications ; Coronary Artery Disease ; complications ; Humans ; Male ; Middle Aged

Objective Differentiation of breast fibroadenoma from breast cancer is of great importance. The purpose of the ar-ticle was to evaluate the diagnostic efficacy of magnetic resonance imaging(MRI) in the differentiation of breast fibroadenoma from breast cancer in DCE-TIC ( dynamic contrast enchancement-time intensity curve) platform type ( typeⅡ) . Methods Between March 2014 and May 2016, 64 patients were included in our study, 19 patients with breast fibroadenoma and 45 patients with breast cancer. All the patients underwent DCE-MRI ( dynamic contrast-enhanced magnetic resonance imaging) examination before operation. Morpho-logic characteristics, hemodynamic characteristics, EER ( early enhancement rate) and ADC ( apparent diffusion coefficient) values were calculated and statistically compared. Results Among 19 cases of breast fibroadenoma, 9 cases were round or ovoid, 8 cases are lobulated, 2 cases were irregular, 15 cases with clear boundary, 14 cases in mammary gland vascular enlargement, 2 cases of slowinflows, 4 cases of moderate inflows, 13 cases of rapid inflows, and the average ADC value was ( 1. 47 ± 0. 38) × 10-3 mm2/s. Low signal separation present in 11 lesions of fibroadenoma. Among the 45 cases of breast cancer, 17 cases were round or ovoid, 7 cases were lobulat-ed, 21 cases were irregular, 11 cases with clear boundary, 38 cases of mammary gland vascular enlargement, 1 case of slow inflows, 5 ca-ses of moderate inflows, 39 cases of rapid inflows, and the averageADC values was (0.98±0.40)×10-3mm2/s. The shape, (χ2=9.176), margin (χ2=16.452), EER(χ2=18.489) and ADC between breast fibroadenoma and breast cancer were of significantly difference. No significant difference was found in the increased and enlarged blood vessels. The success of ADC values in differentation of breast fibroadenoma from breast cancer was statistically significant( P<0.001), and the area under the curve(AUC)of the ROC, sensitivity and specificity of VE were 94.7% and 71.1%. Conclusion Breast fibroadenoma are in fast inflows in the early phase on the DCE-MRI, and there are differences in morphologic characteristics and mass enhancement ways between patients with breast fibroadenoma and breast cancer. Morphologic characteristics combined with inter-nal low signal separation contribute to the differentiation of breast fibroadenoma from breast cancer.

Objective To investigate the effects of remote preconditioning on inflammatory cytokines and respiratory index of rabbit lung injured by ischemia/reperfusion.Methods Eighteen rabbits were randomly divided into three groups(6 each):control group(C),ischemia-reperfusion group(I/R)and remote preconditioning group(R).The plasma concentrations of interleukin-6(IL-6),tumor necrosis factor-?(TNF-?)and interleukin-10(IL-10)were measured before ischemia and 60,120 and 180 min after reperfusion.Respiratory index(A-aO2/PaO2)was calculated before ischemia and 15,30,60,120 and 180 min after reperfusion.The animals were sacrificed after reperfusion,and the left lung was removed for calculation of wet/dry(W/D)ratio and lung permeability index,histological examination was done with light microscope,and diffuse alveolar damage(DAD)scores was estimated.Results The plasma concentrations of IL-6 and TNF-? were significantly higher in I/R group than in C group(P

AIM: To investigate the effects of rosiglitazone(ROSI),an agonist of peroxisome proliferator-activated receptor ?(PPAR?),on the lung expression of intercellular adhesion molecule-1(ICAM-1) and cytokine-induced neutrophil chemoattractant(CINC) in rats with acute lung injury. METHODS: Thirty-six male Wistar rats were randomly divided into six groups: control group,ROSI group,GW9662(a PPAR? antagonist) group,lipopolysaccharide(LPS,6 mg/kg,iv) group,ROSI-LPS group(0.3 mg/kg ROSI iv 30 min prior to LPS) and GW9662-ROSI-LPS group(0.3 mg/kg GW9662,iv,20 min before ROSI).Four hours after LPS injection,wet/dry weight(W/D) ratio,myeloperoxidase (MPO) activity,malondialdehyde(MDA) and CINC-1 concentrations were assayed in the lung tissues.Immunohistochemical analysis of ICAM-1 expression was also studied.RESULTS: Pretreatment with ROSI significantly attenuated LPS-induced increases in W/D ratio,MPO activity,MDA and CINC-1 concentrations as well as ICAM-1 expression in the lung tissues.The specific PPAR? antagonist GW9662 antagonized the effects of ROSI.CONCLUSION: Pretreatment with ROSI reduces LPS-induced lung injury in rats.The mechanism involves inhibition of the lung expression of ICAM-1 and CINC-1 by the activation of PPAR?.