Humans ; Occupational Exposure ; prevention & control ; Respiratory Protective Devices ; classification ; standards ; utilization ; United States

Objective To observe the effect of transforming growth factor β1 (TGF-β1) on thyroid peroxidase activity and the expression of mRNA in primary porcine thyrocytes, and approach its possible mechanism. Methods In vitro cultured porcine thyrocytes were divided into 0 μg/L(control group), 2, 5, and 10 μg TGF-β1/L groups.After cultured for 72 h, the cell survival rate was measured with methyl thiazolyl tetrazolium (MTT) assay and the thyroid peroxidase (TPO) activity was measured by guaiacol method. The expression of TPO mRNA was determined cell survival rates of 2, 5, 10 μg/L groups(85.26%, 75.14% and 63.21%) were significantly lower(all P < 0.05 ).significantly decreased as compared with the control group [(2.143 ± 0.102), all P < 0.05)], and the TPO of TGF-β1, the lower the expression of TPO mRNA [(0.875 ± 0.078), (0.466 ± 0.044), (0.273 ± 0.007)] compared with the control group[(1.419 ± 0.148), all P < 0.05)]. Conclusions The inhibiting effect of TGF-β1 on primary cultured porcine thyrocytes may be related to its mechanism of inhibiting TPO activity and reduced mRNA expression.

Formative assessment is in conformity with the teaching concept of problem-based learning (PBL).It is to make a real-time,dynamic and sustainable observation and evaluation in the whole teaching process.It is helpful to improve learning and teaching continuously.The PBL clinical teaching courses of long-schooling program in our school obtained the certain effect.It used the formative evaluation mode.The homemade students mutual table and teacher evaluation table were used in PBL course.Specifically,students' self-evaluation and mutual-evaluation were made,and then teacher gave some comments in 10 minutes before the end of each class.Every student was scored by the group leader and teacher according to all these abilities,such as the power of expression,question ability,communication skills,coordination skills and the ability to access.At the end of one case study students wrote self assessment reports,and then the teacher wrote reviews,graded and gave feedback to students.However,the final scores were archived as data instead of being part of the course grade.The application of formative assessment has promoted the teaching effect of PBL.However,in the following practice,teachers should be targeted to solve the problems such as lack of teachiers,the students' self evaluation and mutual evaluation being not fair and highly recognized,and a few students having slack psychology.

Objective:To observe and compare the clinical curative effect and safety of topiramate,carbamazepine and sodium valproate on the epilepsy secondary to encephalitis.Methods:80 cases of patients with epilepsy secondary to encephalitis who were treated in our hospital from January 2010 to September 2015 were selected and divided into the topiramate group,carbamazepine group and sodium valproate group,which were treated with topiramate,carbamazepine and sodium valproate respectively.The treatment effect,congnitive scores (including executive function and visual space,name,language,abstract,attention,delayed memory,directional),adverse reaction rate of three groups were compared.Results:The effective rate oftopiramate group was the highest(80.65％,25/31),carbamazepine was the lowest (70.00％,21/30),but there was no significant difference between the three groups (P＞0.05).After treatment,the scores of executive ability and visual spatial,naming,abstraction,attention,orientation,language in topiramate group were significantly higher than those of carbamazepine group and sodium valproate group (P＜0.05);the incidence of adverse reactions of topiramate group was 12.90％,which was significantly lower than that of carbamazepine group (36.67％) and sodium valproate group (29.62％)(P ＜ 0.05).Conclusions:Topiramate,carbamazepine and sodium valproate have equal therapeutic effect on epilepsy secondary to encephalitis,but topiramate had less adverse reactions and best safety.

Adult ; Female ; Hemofiltration ; Humans ; Hydrocarbons, Chlorinated ; poisoning ; Male ; Middle Aged ; Poisoning ; therapy ; Treatment Outcome

Animals ; Apoptosis ; physiology ; Cell Proliferation ; Epithelial Cells ; transplantation ; Female ; Ki-67 Antigen ; analysis ; Kidney Tubular Necrosis, Acute ; pathology ; Male ; Mesenchymal Stem Cell Transplantation ; ethics ; Rats ; Rats, Sprague-Dawley

Accidents, Occupational ; Acute Disease ; Adolescent ; Adult ; Arsenic Poisoning ; Chemical Industry ; China ; Female ; Humans ; Male ; Middle Aged ; Young Adult ; Zinc

Many studies have proven that arsenic trioxide (As2 O3 )as a single agent is not effective against hepatocellular carcinoma (HCC).Many scholars believe that chemotherapy drug resistance of HCC to As2 O3 is the most important reason.The underlying drug resistance mechanism of HCC cells to As2 O3 remains unclear.Studies show that potential mechanism may be tightly associated with As2 O3 pharmacokinetics and properties of HCC tissues and complex molecular biology.