Objective: To analyze the uncertainty in the determination of formaldehyde in food stimulant.Methods: HPLC with pre-column derivation was used to determine formaldehyde in food stimulant.A calculation formula was established to identify the source of uncertainty and the combined uncertainty was evaluated.Results: The synthetic uncertainty in the determination of formaldehyde was 1.7% and the expanded uncertainty was 3.4%.The formaldehyde content in food stimulant was (1.320 ± 0.044) mg·L-1 (k =2).Conclusion: The study provides reference for the uncertainty analysis on formaldehyde content in food stimulant by HPLC with pre-column derivation.

OBJECTIVE:To provide basic industrial research and development recommendations for the supply-side structural reform in drug distribution in China. METHODS:Structure-conduct-performance(SCP)analysis paradigm from Harvard was used for in-depth study of market structure,business conduct and business performance in China since 2010. RESULTS:Since 2010, drug distribution industry in China had shown the scale of decline in the growth rate,low market concentration,increased barriers to entry,the leading of state-owned capital,etc. Though corporate mergers and acquisitions and public financing expanded the scale,management information,third-party logistics,Internet+and pharmacy alliance business model flourished,the industry op-erating performance was poor,state-owned enterprises showed poor performance. CONCLUSIONS:The transformation and upgrad-ing of the industry business model should be promoted by targetedly accelerating the supply-side structural reforms in the drug distri-bution industry,encouraging corporate finance mergers,breaking local protectionism,developing cooperative pharmacies and phar-maceutical third-party logistics alliances and leveraging the Internet.

By direct communication between clinicians and laboratorians, obstacles between clinical work and laboratory diagnosis were unequivocally found at an academic conference. Many clinical physicians feel disappointed and frustrated at the laboratory diagnosis by semen analysis and frankly express their expectations, as to recognize the role and significance of laboratory diagnosis, understand the value of routine semen analysis, work out the puzzles in the analysis of sperm morphology, fulfil the requirements for the identification of cells in semen, and obtain responses from and initiate discussions among laboratorians about the relevant questions. Both laboratorians and clinicians are appealing for strengthened management and earlier establishment of national standards and operating specifications for laboratory diagnosis by semen analysis.
Clinical Laboratory Techniques ; Communication ; Humans ; Interprofessional Relations ; Male ; Physicians ; Semen ; Semen Analysis

OBJECTIVE To investigate the TORCH infection of women with childbearing age in Chongqing.(METHODS) Special IgM antibodies were detected by the TORCH-IgM screen test kits in 2067 women with(childbearing) age,among them 1829 were women with normal childbearing and 238 were women with abnormal one.RESULTS The infection rate of Toxoplasma gondii(TOX),Rubella virus(RV),Cytomegalovirus(CMV) in women with abnormal childbearing was significantly higher than those in women with normal one(P(0.05)).CONCLUSIONS The(abnormal) pregnancy is (related) with TORCH infection.So TORCH screen before pregnancy is very important to aristogenesis.

ObjectiveTo explore the risk factors of pulmonary complications in children with mycoplasma pneumoniae pneumonia.MethodsClinincal data of 341 children with mycoplasma pneumonia were retrospectively analyzed.Children under 2 months were divided into study group and control group according to X-ray or lung CT,the study group of children left lung sequelae in children and the control group without sequelae.Using statistical analysis methods to study the children age,sex,hot process,symptoms,signs,lung lesions,lesion type,white blood cells,erythrocyte sedimentation rate,C-reactive protein,antibiotics,gamma globulin,glucocorticoid application.ResultsAt electasis 30 cases,3 cases of bronchiectasis,bronchiolitis obliterans in 1 case.Logistic regression analysis showed that children fever ＞ 10d,pleural effusion,lesion in the right upper lung,X-ray showed a large shadow,pulmonary complications in children with pulmonary high risk of complications,including chest plot sequelae in children with lung fluid was a strong risk factor( P ＜ 0.01,OR =7.684).ConclusionChildren of fever ＞ 10d,pleural effusion,lesion in the right upper lung,X-ray showed a large shadow,pulmonary complications in children with pulmonary high risk of complications,clinical treatment should be noted.

Objective To investigate the influence of genistein(Gen) on the growth and apoptosis regulation of hepatoma carcinoma cells SMMC-7721.Methods SMMC-7721 cells were divided into three Gen groups treated with different concentrations(5.0,10.0,20.0 mg?L-1) and control group(without Gen).After SMMC-7721 cells were treated for 24 and 48 h,the changes of ultrastructure of cells were observed under electron microscope, MTT was used to detect the inhibitory rate of proliferation of SMMC-7721 cells,flow cytometry was performed to analyze cell phase;immunohistochemistry was used to detect the expression of Caspases-3 protein.Results Compared with control group,chromatin in cellular nucleus became conglomeration or lumping,with chondriosome swelling in Gen groups.With the increasing of Gen concentration,the cellular nucleus became condensed,heterochromatin agglutinating,ground cytoplasm obviously cavitating;with the increase of Gen concentration and prolongation of time,from 24 to 48 h,MTT showed the inhibitory rate of proliferation of SMMC-7721 cells increased in a time-and dose-dependent manner.Flow cytometry analysis showed that with the increase of Gen concentration,the number of cells at G2/M phase increased,the number of cells at S phase decreased and the ratio of G0/G1 also decreased.Immunohistochemistry results showed the expression of protein Caspases-3 increased with the Gen concentration in a dose-dependent manner(P

[objective] To investigate the effects of curcumin on the behavior of chronic constrictive injury(CCI)rats and the c-fos expression in spinal cord dorsal horn.[Methods]108 male SD rats were randomly divided into 4 groups:Control group(treated with CCI);Sham operation group;Solvent contrast group;Curcumin treated group.Thermal withdrawal latency(TWL)and mechanical withdrawal threshold(MWT)of rats were determined by Hargreave's thermal radiation apparatus and von Frey's method of microfilament,respectively.The time course of expression of c-fos were assessed by immunohistochemical analysis.[Results]Curcumin could significantly attenuate the activation of c-fos induced by CCI and simultaneously ameliorate thermal and mechanical hyperalgesia induced by CCI.[Conclusion]This study shows that curcumin could attenuate the activation of c-fos to ameliorate the CCI-induced neuropathic pain.

Objective To evaluate the effects of curcumin on the activity of NR2B and NR1 in the spinal dorsal horn in a rat model of diabetic neuropathic pain (DNP).Methods Diabetes mellitus was induced by high-sucrose and high-fat diet and intraperitoneal streptozotocin 35 mg/kg,then confirmed by fasting blood glucose level ≥ 16.7 mmol/L 3 days later in male Sprague-Dawley rats.DNP was confirmed by the mechanical paw withdrawal threshold (MWT) and thermal paw withdrawal latency (TWL) measured on day 14 after streptozotocin administration ＜ 80％ of the baseline value.The rats were then randomly divided into 3 groups (n =27 each) using a random number table:DNP,DNP+ curcumin group (group DCur)and DNP + solvent control group (group DSC).Curcumin 100 mg· kg-1 · d-1 and corn oil 4 ml· kg-1 · d-1 were injected intraperitoneally for 14 consecutive days starting from 14 days after administration of streptozotocin in DCur and DSC groups,respectively.Another 27 normal male Sprague-Dawley rats served as control group (group C) and were fed with normal forage.At 3,7 and 14 days after curcumin injection,MWT and TWL were measured and the lumbar segments (L4-6) of the spinal cord were removed.The expression of pTyr1472-NR2B and pSer896-NR1 in the spinal dorsal horn was determined by immunohistochemistry and Western blot.Results Compared with group C,MWT was significantly decreased,TWL was shortened,and the expression of pTyr1472-NR2B was up-regulated at each time point in group DNP.Compared with group DNP,MWT was significantly increased,and TWL was prolonged at 7 days after curcumin injection,and the expression of pTyr1472-NR2B was down-regulated at 3 days after curcumin injection in group DCur.There was no significant difference in each parameter between DNP and DSC groups,and in the expression of pSer896-NR1 between the four groups.Conclusion The mechanism by which curcumin mitigates neuropathic pain in type 2 diabetic rats may be related to inhibition of up-regulation of pTyr1472-NR2B expression,while unrelated to pSer896-NR1 expression in the spinal dorsal horn.

Objective To investigate the expression of apoptosis-related genes Bcl-2 and Bax after cerebral ischemic reperfusion in hippocampal CA1 and CA3 areas and the effect of curcumin on the expression of Bcl-2 and Bax in gerbils.Methods Gerbils were randomly divided into sham group(SH),ischemia-reperfusion group(IR),curcumin group(CU) and solvent control group(SC).Forebrain ischemia was induced by occlusion of bilateral common carotid arteries.Observations were made in each group 1d,3d,5d and 7d after ischemia.Open field test was used to examine the behavioral change.The apoptotic neurons in hippocampal CA1 region was counted,and the expression of Bcl-2 and Bax in hippocampal CA1 and CA3 areas was detected by SABC immunocytochemical technique.Results The behavioral mark and the number of apoptotic neurons in hippocampal CA1 and CA3 areas were much smaller in CU group than in IR group(P

Objective To evaluate the usefulness of diffusion-weighted MR combined with routine T2 WI in finding the possible residual foci in uterine cervical cancers after radical chemo-radiation therapy.Methods This was a retrospective study including 25 consecutive cervical cancer patients who received hysterectomy after radical chemo-radiation therapy.All of them underwent MR examinations post-chemoradiation and just before operation.Images of T2 WI alone and those of T2 WI combining DWI were evaluated respectively by 2 senior radiologists,in order to decide whether there were residual tumors.ADC values were also measured.Taking the post-operation pathological results as the gold standard,the accuracies,sensitivities and specificities of T2 WI alone,T2 WI combining DWI,and ADC values were all calculated.Results In those 25 patients,9 were found with foci of residual cancer in operative pathology,while no cancer cells were found in the other 1 6 patients.The accuracy,sensitivity and specificity in finding the positive residual cancer using T2 WI alone were 56.0%,77.8% and 43.8%,comparing with 72.0%,66.7% and 75.0% in T2 WI combining DWI.The accuracy and specificity increased with statistical significance after combining DWI (P =0.01 6 for accuracy,P =0.031 for specificity),while the sensitivity decreased but did not reach statistically significant level (P =0.099).No difference in ADC values was found.Conclusion DWI can be used as a supplementary sequence in finding the existence of residual tumors of cervical cancer after radical chemo-radiation therapy.Routine T2 WI combing DWI increased the specificity and accuracy,but still facing the risk of decreasing sensitivity.