Aim To build a simple experiment model of rat colon injury induced by acetic acid in vitro and to observe the effects of melatonin on this model.Methods On the basis of the establishment of rat colon injury model with acetic acid in vitro,we observed the colon mucosal damage caused by different concentrations of acetic acid(0,0.1%,0.2% and 0.4%) for different time(5,10,15,20,25 and 30 min),determined the content of lactic dehydrogenase(LDH),malondiadehyde(MDA) and mucus in medium,and examined the histological changes of colon mucosa by Alacian Blue method.On the basis of the establishment of this model,the experiment was designed into normal group,model group(acetic acid of 0.4%,time for 30 min) and melatonin treatment group(the final concentration 0.1,1.0、10 mmol?L~(-1)),and the indicators described above were detected to investigate the protective effects of melatonin.Results The LDH content of medium elevated gradually and the colon mucosal epithelial cells were injured by acetic acid in dose-and time-dependent manner,the mucosal edema,colon-wall depth and epithelium lose were observed at the same time,the MDA content of medium enhanced and mucus reduced correspondingly,but no significant change of the mucin expression in mucosal epithelial cells were observed.Pretreatment with melatonin reduced the release of LDH and MDA while promoted the secretion of mucus.Conclusion Colon mucosa of rats was injured by acetic acid in dose-and time-dependent manner in vitro.Acetic acid can impair the mucosal-mucus barrier by oxidating injured cell memberane.Melatonin can strengthen the barrier function of colon mucosa by its anti-oxidant action,attenuate the direct damage on colon mucosa of acetic acid.

Objective To observe the efficacy of Complex Oral Motor Scoring (COMS) and diadochokinetic rate (DR) on evaluation of oral motor dysfunction and speech disorders in children with cerebral palsy. Methods 107 children with cerebral palsy were tested with Chinese-version Articulation Test, Simple Oral Motor Scoring (SOMS), COMS and DR. The correlation among SOMS, COMS and DR was analysesd. Results 85 children were abnormal in SOMS and 94 in COMS. Oral dyskinesia was found in all the children with spastic quadriplegia, dyskinetic, ataxia and mixed type of cerebral palsy, and less in the type of spastic diplegia and hemiplegia. DR was the least in spastic quadriplegia, dyskinetic, mixed type of cerebral palsy, more in the type of ataxia and spastic diplegia, and the most in hemiplegia. The coefficient of correlation among the SOMS, COMS, the longest pronunciation and DR were more than 0.8 (P<0.01). Conclusion The incidence and severity of oral dyskinesia and dysarthria are associated with the types of cerebral palsy. There is good correlation among SOMS, COMS, longest pronunciation and DR.

Objective To prospectively compare the efficacy of omeprazole and esomeprazole on H. pylori eradication related to cytochrome P450 (CYP) 2C19 polymorphism in Chinese Han poputafion. Methods A total of 240 patients with peptic ulcer were randomly assigned to receive either EAC (amoxicillin, clarithromyein and esomeprazole) treatment or OAC (amoxicillin, clarithromycin and orneprazole) treatment for one week with 120 each. Then, the patients were sustained treated with esomeprazol or omeprazole for 3 weeks. The endoscopic evaluation was performed 2 weeks after treatment. At the end of the treatment, a carbon-13 (13C) urea breath test (13C-UBT) was performed to determine H. pylori status. Polymerase chain reaction and restriction fragment length polymorphism were used to detect CYP2C19 genotypes including extensive metabolizer (EM), poor metabolizer (PM), homozygous (homEM) and hetEM. Results Two hundred and twenty five of 240 patients completed the study. H. pylori eradication was 79.2% with OAC regimen and 88.3% with EAC regimen by intention to-treat (ITT) analyses without difference (P>0.05). Whereas H. pylori eradication was 87.20/00 with OAC regimen and 91.4% with EAC regimen by per-protocol (PP) analyses without difference (P>0. 05). However, both ITT and PP analysis showed that there was significant difference in H. pylori eradication between EAC regimen (91.9% and 97.1%) and OAC regimen (71.8% and 77.8%) in patients with homEM genotype (P= 0.037 and P=0.028). Two weeks after treatment, the percentage of ulcer healing was 79.2% or 81.9% in EAC group and 69.2% or 76.1% in OAC group by ITT or PP analysis, respectively (P> 0.05). Low side effects were noted in EAC or OAC groups (3.3% vs. 7.5%,P>0.05). Conclusion The high eradication will be achieved by esomeprazole-based triple regimen which is superior to omeprazole-based triple regimen in treatment of patients with homEM genotype.

AIM: To investigate the effects of melatonin (MT) on the immunological function in colon of rats immunological colitis. METHODS: The rats colitis was produced by enema with trinitrobenzene sulfonic acid and ethanol. The experiment groups included normal group, model group, 5-aminosalicylic acid (5-ASA) group (100 mg?kg~(-1)), MT groups (2.5,5.0,10.0 mg?kg~(-1)), and treated intracolon with saline, saline, 5-ASA and MT respectively (once per day, from the d7 after the establishment of colitis model to the end of the experiment). The content of interleukin (IL-1, IL-2) and tumour necrosis factor (TNF)-? in rats colon were detected; The inflammatory colon were homogenatized and incubated with lipopolysaccharides (LPS), and designed as control group, model group, 5-ASA group (100?mol/L), MT groups(0.01, 0.1, 1.0 mmol/L). The content of IL-1, IL-2, TNF-?, nitric oxide (NO), lactic dehydrogenase (LDH), myeloperoxidase (MPO) and malondiadehyde (MDA) in the supernant were detected. RESULTS: In model group, the contents of IL-1, IL-2 and TNF-? in colon elevated remarkably and MT depressed this effectively. In the inflammatory colon homogenates of rats colitis, the content of IL-1, IL-2, TNF-?, NO, LDH, MPO and MDA elevated remarkably, Pretreation with MT depressed the content of IL-1, TNF-?, LDH, MPO and MDA effectively. MT (1.0mmol/L) also reduced the production of NO obviously. CONCLUSION: The abnormal immunological function is shown obviously in rats colitis. MT normalizes this change in vivo and in vitro and attenuates the mucosal damage.

Objective To prospectively evaluate 3D time-of-flight magnetic resonance angiography (3DTOF MRA) and high resolution contrast enhanced volume scan magnetic resonance angiography (CEMRA) with sensitivity encoding in diagnosing craniocervical artery stenosis. Methods Forty-six patients suspected with craniocervical artery diseases underwent MRI, 3DTOF MRA of the head and also CEMRA of the neck. The images of MRA were reconstructed with MIP and VR. The degree of arterial stenosis demonstrated on MRA was compared with that showed on digital subtraction angiography(DSA), and the data were analyzed with Spearman rank correlation coefficient (Rs). Results Excellent correlation in determining the degree of craniocervical artery stenosis existed between MRA and DSA (Rs = 0.97). With DSA as a golden standard, the sensitivity, specificity and accuracy of MRA in detecting over 50% arterial stenosis were 100%, 99.4% and 99.4% respectively. Conclusion 3DTOF MRA and CEMRA with sensitivity encoding at 3.0T are reliable and effective examinations for evaluating craniocervical artery disease. These techniques can be used as the necessary exams before DSA and can even substitute for the conventional DSA in some instances.

AIM To investigate the effects of melatonin on rats colitis induced by acetic acid and its mechanism. METHODS The rats colitis model was produced by acetic acid enemas. The experimental animals was divided into 6 groups: normal group,model group,5 ASA group(100 mg?kg -1 ),MT group(2 5,5 0,10 0 mg?kg -1 ), and treated intracolonic with saline,5 ASA and MT correspondingly (1 time per day, from the 24 h after the establishment of colitis model to the end of the experiment). At the end of the experiment, the mucosal damage index(CMDI),the level of myeloperoxidase(MPO), the score of histology(HS) in rats colon and the occult blood test(OB) in feces were observed and measured, meanwhile, the content of malondiadehyde(MDA), glutathione peroxidase(GSH Px),catalase (CAT), superoxide dismutase(SOD), nitric oxide(NO) in rats colon were detected. RESULTS After being treated with acetic acid, the exetent of OB, CMDI, HS and the level of MPO in model group were more higher than that in normal group, MT(2 5,5 0,10 0 mg?kg -1 ) ameliorated the exetent of CMDI and OB and reduced the level of MPO, MT(10 0 mg?kg -1 ) alleviated the HS of rats in model group. Meanwhile in model group, the content of MDA,NO in colon elevated, but the content of GSH Px,SOD and CAT in colon reduced remarkably. MT intracolon depressed the content of MDA,NO in colon, promote the contents of GSH Px?SOD and CAT in colon. CONCLUSION Treatment with MT shows beneficial effects on the mucosal damage of rats colitis induced by acetic acid.

Objective To study the relationship of abnormal family history in the first degree relatives and the clinical phenotype of patients with polyeystic ovary syndrome(PCOS).Methods Clinical data of first degree relatives of 139 women with PCOS were collected by questionnaires,including body mass index(BMI),waist hip ratio(WHR),and hursutism score.Follicle stimulating hormone(FSH), luteinizing hormone(LH),prolactin(PRL),testosterone(T),androstenedione(A),oral glucose tolerance test(OGTT)and insulin releasing test were measured.Results(1)Compared with patients with a negative family history of diabetes mellitus,for women with a positive family history,WHR(0.99?0.10 vs 0.79?0.08)and score of hirsutism(1.9?1.2 vs 1.8?1.2)were increased,the duration of menstruation was longer[(108?10)vs(92?19)days];A[(11?6)vs(8?5)nmol/L],homeostasis model assessment of insulin resistance(HOMA-IR,3.5?2.0 vs 2.7?1.6),area under curve(AUC) glucose[(836?245)vs(748?139)nmol?L~(-1)?min~(-1)],AUC insulin[(9670?4582)vs(7330?4311) mIU?L~(-1)?min~(-1)],fasting glucose[(5.0?1.1)vs(4.8?0.5)mmol/L]and fasting insulin[(15?8)vs (11?8)mIU/L]were increased,while early insulin secretion function index(?I60/?G60,32?22 vs 52?30),insulin sensitive index(ISI,0.019?0.011 vs 0.033?0.014)and disposition index(DI,18? 10 vs 30?22;P

Objective To explore the effects of different vitamin A(VA) levels on thyroid cells apoptosis and its gene expression of mice taking excessive iodine. Methods Kunming mice were randomly divided into 6 groups according to body weight 3 weeks after born: normal control(NI) group, high iodine(HI) group, low vitamin (LVA) group, high iodine plus low vitamin A(HI+LVA) group, high iodine plus vitamin A1 (HI+VA1) group, high iodine plus vitamin A2(HI+VA2) group. The VA was given in food(4000,4000,0,0,8000,16 000 U/kg), and the iodine was given as potassium iodate in water (I-:50,3000,50,3000,3000,3000 μg/L). The apoptosis was tested using in situ end labehng(TUNEL) method. Reverse transcription polymerase chain reaction (RT-PCR) were used to measure the level of mRNA of apoptosis gene(Fas, FasL, Bcl-2) in tissues. Results Apoptotic index measured by TUNEL method was rising along with the mice age. Compared to NI group[(14.09±5.68)%], apoptotic index was significantly increased in HI[(20.91±9.57)%], HI+LVA[(20.29±9.90)%]and HI+VA2 [(19.51±8.25)%]groups in the three months(P < 0.05). Compared to NI group[(16.80±9.90)%], apoptotic index was significantly increased(P < 0.05) in HI[(23.22±8.58)%],LVA[(22.56±6.17)%],HI+LVA [(25.99±9.62)%],HI+VA1 [(21.65±7.74)%]groups in the six months. Compared with the NI group(Fas: 1.29±0.25,1.27±0.26; FasL: 1.60±0.13,1.65±0.13), the mRNA levels of Fas and FasL in HI group(Fas: 1.57±0.36,1.49±0.35; FasL: 1.85±0.46,1.84±0.32) were increased, but the differences were not remarkable(P > 0.05) in the three and six months. Compared with the HI group, the mRNA levels of Fas in HI+ VA1, HI+VA2(1.33±0.35, 1.30±0.26) groups were decreased to the level in NI group in the six months. The mRNA levels of Fas and FasL were not different (P > 0.05) between HI+LVA(I.60±0.27,1.88±0.46) and HI groups in the three months. The mRNA levels of Bcl-2 were not remarkably differences in the three months (1.05±0.19,0.96±0.33,0.95±0.26,1.18±0.27,1.10±0.19,0.98±0.36, all P > 0.05), and in the six months (1.35±0.28,1.60±0.25,1.48±0.18,1.71±0.26,1.66±0.29,1.56±0.35, all P > 0.05). Conclusions Excessive iodine can cause thyroid cells apoptosis in mice. Supplementation of suitable amount of VA can regulate the levels of the apoptosis-related genes expression, and partly antagonize the apoptosis caused by high iodine.

β-Amyrin synthase (β-AS) genes of Glycyrrhiza uralensis from 6 different regions were analyzed by PCR-SSCP and sequenced, then the correlationship between β-AS SNP and regions of Glycyrrhiza uralensis were determined. According to the 1 coding single nucleotide polymorphism on the first exon of β-AS gene at 94 bp site, Glycyrrhiza uralensis could be divided into 3 genotypes. In these genotypes, the percentage of 94A type in genuine regions was much higher, and it had significant differences with the percentage in non-genuine regions (P < 0.001). The results of the experiment proved that different β-AS genotypes at 94 bp site from different regions may be one of the important reasons to result in the genuineness of Glycyrrhiza uralensis.
Exons ; Genotype ; Glycyrrhiza uralensis ; classification ; enzymology ; genetics ; Intramolecular Transferases ; genetics ; Plant Proteins ; genetics ; Polymorphism, Single Nucleotide ; Polymorphism, Single-Stranded Conformational

Cutaneous Fistula ; Digestive System Abnormalities ; therapy ; Endoscopy, Gastrointestinal ; methods ; Female ; Humans ; Infant ; Treatment Outcome