Objective To study the characteristics of the variations of formaldehyde concentration in indoor air of newly decorated living rooms. Methods The formaldehyde concentrations in indoor air of newly decorated rooms were determined with model 4160_2 formaldehyde analyzer during the different periods after decoration. Results At the 10th minute after closing all the windows and doors in the newly decorated rooms, the formaldehyde concentrations of indoor air exceeded the standard nearly as high as 2 times, reached 51% of the peak concentration at the 30th minute, and reached the peak concentration (0.652 mg/m 3) at the 420th minute, then decreased gradually with the prolongation of periods after decoration and accorded with the sanitary standard in the 4th month after decoration. The whole study was carried out at the indoor air temperature of 27.8～29.9 ℃. Conclusion The indoor air pollution by formaldehyde was serious in newly decorated living rooms. The ventilation should be enhanced during the first 4_month period after decoration, so that the formaldehyde concentration could be decreased gradually.

In order to identify Peucedani Radix, Peucedani Decursivi Radix and their adulterants, the internal transcribed spacer 2 (ITS2) regions of Peucedani Radix, Peucedani Decursivi Radix and their adulterants were amplified and bidirectionally sequenced based on the Principles for Molecular Identification of Traditional Chinese Materia Medica Using DNA Barcoding, which has been promulgated by Chinese Pharmacopoeia Commission. Sequences were analyzed and assembled by Codon Code Aligner V3. 7.1. The relevant data were analyzed by MEGA 5. 0. Species identification analyses were performed by using the nearest distance methods and neighbor-joining (NJ) methods. The result showed that the ITS2 sequence lengths of Peucedani Radix were 229-230 bp and the average intra-specific genetic distances were 0.005. The ITS2 sequence lengths of Peucedani Decursivi Radix were 227 bp and the sequences contained no variation site. The average inter-specific K2P genetic distance of Peucedani Radix, Peucedani Decursivi Radix and their adulterants species were 0.044 and 0.065 respectively. The minimum inter-specific divergence is larger than the maximum intra-specific divergence of Peucedani Decursivi Radix. The nearest distance methods and NJ trees results indicated that Peucedani Radix, Peucedani Decursivi Radix and their adulterants species could be identification clearly. The ITS2 regions can stably and accurately distinguish Peucedani Radix, Peucedani Decursivi Radix and their adulterants.
Apiaceae ; classification ; genetics ; DNA Barcoding, Taxonomic ; methods ; DNA, Ribosomal Spacer ; Drug Contamination

OBJECTIVETo identify the Cynomorii Herba and its analogues species using DNA barcoding technique.

METHODTotal genomic DNA extracted from all materials using the DNA extraction kit. The internal transcribed spacer 2 (ITS2) regions were amplified using polymerase chain reaction (PCR), and purified PCR products were sequenced bi-directionally. Sequence assembly and consensus sequence generation were performed using the CodonCode Aligner 3.7.1. The Kimura 2-Parameter (K2P) distances and GC content were computed using MEGA 5. 0. Species identification analyses were conducted through the species identification system for traditional Chinese medicine and neighbor-joining (NJ) trees.

RESULTThe ITS2 sequence lengths of Cynomorii Herba were 229 bp. The average intra-specific genetic distances of Cynomorii Herba were 0.003. The average inter-specific genetic distances between Cynomorii Herba and its adulterants species were 0.760. The results showed that the minimum inter-specific divergence is larger than the maximum intra-specific divergence. The species identification system for traditional Chinese medicine and NJ trees results indicated that Cynomorii Herba and its adulterants species can be easily identification.

CONCLUSIONThe ITS2 region is an efficient barcode for identification of Cynomorii Herba, which provide a new technique to ensure clinical safety in utilization of traditional Chinese medicine.

Cynomorium ; classification ; genetics ; DNA Barcoding, Taxonomic ; DNA, Intergenic ; genetics ; DNA, Plant ; genetics ; Polymerase Chain Reaction

Objective To assess mucin gene expression in Barrett's esophagus.Methods Mucin core protein-MUC1,MUC2,MUC3,MUCSAC and MUC6 were detected by immunohistochemistry.The re- lationship between mucin expression and magnification-endoscopic characteristics,pathohistologic epithelial types of Barrett's esophagus was analyzed.Results Mild expression of MUC1 was predominantly found in the superficial epithelium of both gastric and specialised intestinal metaplasia.In a small number of specimens, mild expression of MUC1 was also noted in glands.Strong MUC2 expression was noted only in the goblet cells in Barrett's oesophagus.MUC3 was expressed in the superficial columnar cells of specialized intestinal metaplasia with or without globlet cells but not in gastric metaplasia of the oesophagus.In some specimens MUC3 was expressed in the vacuolus of the globlet cells and the lumen of gland.Strong staining of MUCSAC was noted in the columnar epithelium of both gastric metaplasia and specialized intestinal metaplasia in Barrett's oesophagus,as well as expressed in the cytoplasm and vacuolus of the globlet cells in some speci- mens.Expression of MUC6 protein was detected at the basement of the crypts in gastric metaplasia and spe- cialised Barrett's glands.Expression of MUC2 and MUC3 protein was found much higher in villous or irregu- lar pit pattern than that in dot or rod pit pattern(P

Objective To observe the levels of alanine aminotransferase(ALT), total bilirubin(TBIL), hyaluronic acid (HA), procollagen type Ⅲ aminoterminal peptide (P Ⅲ NP) and larninin (LN) in the sera of rats infected with Clonorchis sinensis (C. sinensis) after treatment of albendazole combined with milkvetch root. Methods Thirty-two healthy adult Wistar rats were randomly divided into four groups with 8 in each based on body mass: control group, non-treatment group, Albendazole group(ALB group) and albendazole combined with milkvetch root group(ALB+MR group). The rats in non-treatmen, ALB and ALB+MR groups were infected orally with metacercariae of C. sinensis 50 per rat. The rats in control group were mock-infected with saline. The rats in ALB group were treated to each rat with 50 mg/kg alhendazole for 5 days, and ALB+MR groups were given to same treat with albendazole, meanwhile each rat injected with 800 mg/kg milkvetch root intraperitoneally for 30 days. All rats were killed after infestation 14 weeks and their sera samples were collected to detect ALT, TBIL, HA, PⅢNP, LN. Results There were statistically significant differences in the levels of ALT and LN in the sera of rats between groups(F=31.40,11.82, P<0.01). Compared with control[ (47.88±4.88)U/L, (51.20±4.12)μg/L], the levels of ALT and LN in rats in non-treatment group [(85.50±9.65)U/L, (64.20±4.18) μg/L] and ALB group [(65.29± 7.78) U/L, (58.23±2.55) μg/L] were significantly increased (P<0.05). Compared with non-treatment group, the levels of ALT and LN in rats in ALB group and ALB+MR groups[(50.25±9.29)U/L, (53.68±5.63)μg/L] were significantly decreased(P<0.05), and they decreased more obviously in ALB+MR group (P<0.05). There were statistically significant differences in the levels of TBIL, PⅢNP and HA in the sera of rats between groups (χ2=15.309,21.418,19.759, P<0.01). Compared with control[(0.700±0.350)μmol/L, (26.085±4.075)μg/L, (81.935±42.550)μg/L], the levels of TBIL, PⅢNP and HA in rats in non-treatment group(2.400 μmol/L, 46.220 μg/L,310.885 μg/L) and ALT group(1.200 μmol/L,36.540 μg/L, 178.010 μg/L) were significantly increased(P<0.05). Compared with non-treatment group, the level of TBIL in ALT+MR group(0.750 μmol/L), the levels of pⅢNP and HA in ALT and ALT+MR group(30.470,100.240 μg/L) were significantly decreased(P< 0.05). The levels of TBIL, PⅢNP and HA decreased more obviously in ALB+MR group(P<0.05). Conclusions The liver function in rats infected with C. sinensis is abnormal. The liver function and fibrosis are improved after treatment with albendazole or albendazole combined with milkvetch root. The treatment of albendazole combined with milkvetch root is more effective.

OBJECTIVETo probe into the therapeutic effect of ear point combined therapy on common migraine at the remission stage and the mechanism.

METHODSThirty-two cases of common migraine at the remission stage were treated with ear point combined therapy, including blood-letting at ear back, injection of autoblood into Fengchi (GB 20), Yanglingquan (GB 34), and pricking at ear points Nie, Yi-dan (pancreas and gallbladder), Shenmen, etc.. Clinical therapeutic effect was evaluated at the end of one therapeutic course, and calcitonin gene-related peptide (CGRP) and endotheline (ET) were detected before and after treatment, and the CGRP and ET contents were compared with those in 22 normal persons.

RESULTSThe effective rate was 78.1% (P<0.001), CGRP and ET contents had very significant changes after treatment (P<0.01), and CGRP and ET showed negative correlativity (P<0.05).

CONCLUSIONThe ear point combined therapy can regulates the balance between the plasma CGRP and ET in the patient of common migraine and improve vasodilative, vasoconstrictive and endothelial fuctions in the brain, hence stopping pain.

Acupuncture, Ear ; methods ; Adolescent ; Adult ; Calcitonin Gene-Related Peptide ; blood ; Endothelins ; blood ; Female ; Humans ; Male ; Middle Aged ; Migraine without Aura ; blood ; physiopathology ; therapy

OBJECTIVETo explore the role of sTRAIL in the pathogenesis of HBV infection in human being.

METHODSsTRAIL in 153 patients' sera was examined with ELISA. Correlations between sTRAIL and liver functional parameters were analysed.

RESULTSThe levels of sTRAIL in patients with various clinical types of hepatitis B as well as primary hepatocellular carcinoma were all higher than that in normal persons and became almost normal in recovering stage cases. In acute and chronic HBV infection, sTRAIL level was negatively correlated with ALT, AST and total bilirubin levels, and positively correlated with serum albumin.

CONCLUSIONThe results indicated that higher level of sTRAIL expression is correlated with liver damage, and apoptosis induced by sTRAIL is one of the mechanisms of liver damage in HBV infection.

Adolescent ; Adult ; Aged ; Alanine Transaminase ; blood ; Aspartate Aminotransferases ; blood ; Enzyme-Linked Immunosorbent Assay ; Female ; Hepatitis B ; blood ; Hepatitis B, Chronic ; blood ; Humans ; Liver Cirrhosis ; blood ; virology ; Liver Neoplasms ; blood ; virology ; Male ; Middle Aged ; Serum Albumin ; analysis ; TNF-Related Apoptosis-Inducing Ligand ; blood ; Young Adult

Background and purpose:Vascular endothelial growth factor(VEGF) is a potent angiogenic mediator and angiogenesis has important effects on tumor growth and metastasis.The present study was to investigate the relationship between genetic polymorphism of VEGF and heredity risk factor of lung cancer.Methods:VEGF genotypes were determined by PCR-RFLP method in 171 patients with lung cancer and 172 healthy controls.Software PHASE 1.0 was used to construct the haplotypes of every individual.Unconditional logistic regression model was used to analyze the statistical association of genotypes or haplotypes in the two groups adjusted by gender and age. Results:Individuals with at least one-2578A allele had a significantly decreased risk of lung cancer compared with those carrying-2578CC genotype.When the analyses were stratified by gender,the combined-2578 CA and AA genotype,were associated with a considerably reduced risk of lung cancer(P=0.001,OR=0.303,95%CI=0.15 3-0.601).The distribution of the two haplotypes(936C/-2578C and 936C/-2578A) among overall lung cancer cases was significantly different from that among the controls(P=0.016,0R=0.317,95%CI=0.124-0.809 and P=0.018,OR=0.547, 95%CI=0.331-0.903).When the cases were categorized by tumor histology,the distribution of C-C haplotype in the adenocarcinoma(AC) group was associated with a substantially lowered risk of AC(P=0.004,0R=0.237,95%CI=0.090- 0.627),compared with the reference haplotypes.Conclusion:VEGF polymorphism may be a critical risk for the genetic risk factor to lung cancer.

Hepatitis ; immunology ; Humans ; Liver Cirrhosis ; immunology ; Receptors, Complement ; blood

The infection status of anisakid larvae was examined in 290 marine fish of 25 species and in 108 cephalopods of 3 species purchased in Bayuquan region, Yingko city nearby the coast of the Bohai Sea from may to August 1992. A total of 7,327 larvae were collected from 156 fish of 19 species and 8 squids of one species. The 3rd-stage larvae of Anisakis simplex were collected from 121 fish (63.4%) of 15 species (N = 191) and from 8 squids (14.8%) of one species (N = 54), and they were total, 5,992 (81.8%). Out of remaining 1,335 larvae, 154 (2.1%) were classified as Thynnascaris type B from 23 fish of 4 species, 1,013 (13.8%) as Thynnascaris type C from 79 fish of 13 species. 164 (2.2%) as Hysterothylacium China type V from 20 fish of 4 species, 3 (0.04%) as Raphidascaris from 3 fish of 2 species and one was Pseudoterranova decipiens larva.
Animal ; Anisakiasis/veterinary* ; Anisakiasis/parasitology ; Anisakiasis/epidemiology ; Anisakis/isolation & purification ; Anisakis/classification* ; China ; Fish Diseases/parasitology* ; Fish Diseases/epidemiology ; Fishes ; Larva ; Seawater ; Squid/parasitology*