Objective To study the relationship between serum leptin and thyroid function by investigating the change of serum leptin concentration in children with abnormal thyroid function (hyperthyroidism and hypothyroidism).Methods The levels of serum leptin was determined by radio-immunoassay(RIA) in 20 cases of hyperthyroidism, 17 cases of hypothyroidism, 25 cases of normal controls, respectively .Meanwhile, the serum levels of free triiodothyronine(FT 3), free thyroxine(FT 4) and thyroid-stimulating hormone(TSH) were measured by micro-particle-chemiluminescence immunoassay.Results The levels of serum leptin in hypothyroidism group before treatment was significantly lower than that of normal control groups (P0.05).Conclusions The levels of serum leptin in hypothyroidism markedly descend and no change in the hyperthyroidism. Thyroid hormone can promote the secretion of serum leptin eligibly.

Objective:To investigate the aberrant methylation of CpG island in 5′promoter region of p16 gene in the pancreatic juice and its value in diagnosis of patients with pancreatic cancer.Methods:Pure pancreatic juice(PPJ)was collected from the pancreatic duct by a nasopancreatic tube put under endoscopic retrograde cholangiopancreatography(ERCP). Cytological examination was performed by H-E staining in pure pancreatic juice.Aberrant p16 methylation was detected using the methylation specific PCR(MSP)in the PPJ.Results:The sensitivity,specificity,positive predictive value,negative predictive value and accuracy cytological examination in diagnosis of pancreatic cancer were 40%,100%,100%,45.4% and 60.0%,respectively.The DNA sequences were successfully extracted from the PPJ of 30 patients with pancreatic diseases and were subjected to MSP.Seven(35%)of the 20 cases with pancreatic cancer showed aberrant methylation of p16 gene.No aberrant methylation was detected in the pancreatic juice samples of patients with chronic pancreatitis and mucinous cystoadenocarcinoma of pancreas.When cytological examination combined with p16 methylation detection,the sensitivity, specificity,positive predictive value,negative predictive value and accuracy for diagnosis of pancreatic cancer were 55%,100%, 100%,52.6% and 70%,respectively.Conclusion:Pancreatic juice collected by nasopancreatic drainage during ERCP can be used for molecular analysis.Detection of aberrant methylation of p16 gene in pancreatic juice combined with cytological examination is a better method for diagnosis of pancreatic cancer.

Autopsy ; China ; epidemiology ; Congenital Abnormalities ; epidemiology ; etiology ; mortality ; Folic Acid ; adverse effects ; Humans ; Infant, Newborn ; Survival Rate ; Ultrasonography, Prenatal ; adverse effects

OBJECTIVETo study the characteristics of the strains of Salmonella enterica (S. enterica) serovar Senftenberg lacking Salmonella pathogenicity island 1 (SPI-1).

METHODSA total of 10 strains of S. enterica serovar Senftenberg were isolated from 10 cases of diarrhea patients. Pulsed field gel electrophoresis (PFGE), PCR, sequencing techniques and cell invasion test were adapted to study the molecular types and invasiveness of the genes and cells; and made a comparison between the 10 strains and the strains (C02013) isolated in Shenzhen in 2002.

RESULTSThe 10 Senftenberg isolated (S09007-S09012, S09014-S09017) in Shanghai showed three PFGE patterns, which were significantly different from the strains isolated in Shenzhen. PCR-amplified results indicated the invasion gene (invA), secreted effector protein gene (sipA) and gene fragments as fhlA-hilA, hilA-spaP and spaP-invH in the 10 strains of SPI-1 were all negative. The sequencing results revealed that the 10 strains isolated in Shanghai lacked most parts of SPI-1 genes, as fragments from orgA to invH and parts of orgA gene itself; however, compared with strains isolated in Shenzhen, the sprB-orgC gene existed. The missing parts of genes were replaced by a simple insertion sequence (IS) of 1000 bp in the strains isolated both in Shenzhen in 2002 and in Shanghai in 2006. The invasiveness rates of the 10 strains (S09007-S09012, S09014-S09017) towards Hela cells were (0.0053 ± 0.0024)%, (0.0046 ± 0.0006)%, (0.0047 ± 0.0003)%, (0.0064 ± 0.0012)%, (0.0065 ± 0.0011)%, (0.0070 ± 0.0020)%, (0.0115 ± 0.0030)%, (0.0099 ± 0.0039)%, (0.0180 ± 0.0135)% and (0.0031 ± 0.0012)%, respectively; which were all significantly lower than the rate of invA-positive control strain STM1344 ((5.0800 ± 0.6333)%); lower or close to the rate of invA-lacked artificial-mutated strain STMinvA-((0.0193 ± 0.0045)%).

CONCLUSIONSPI-1 genes are not essential for the diarrhea caused by S. enterica serovar Senftenberg.

Adult ; Aged ; Bacterial Typing Techniques ; Diarrhea ; microbiology ; Feces ; microbiology ; Female ; Genes, Bacterial ; Genomic Islands ; HeLa Cells ; Humans ; Male ; Middle Aged ; Salmonella enterica ; genetics ; isolation & purification ; pathogenicity

Cell Line, Tumor ; Gene Expression ; Genetic Vectors ; Humans ; Lentivirus ; genetics ; Lipase ; genetics ; Membrane Proteins ; genetics

OBJECTIVETo analyze the genetic relations of Shigella isolated from Shenzhen in 2001-2006 and develop primary molecular subtyping surveillance network of Shigella.

METHODSChromosomal DNAs from 55 isolated in agarose were digested with the restriction enzyme Xba I, and then were analyzed by pulsed-field gel electrophoresis. Pulsed-field gel electrophoresis (PFGE) patterns were clustered using BioNumerics software.

RESULTSAll 41 distinctive PFGE patterns were identified among 55 strains. 32 strains belonged to one cluster. Differences were observed in other strains.

CONCLUSIONBoth genetic-related clones and non-related clones of Shigella existed in Shenzhen. The development of PFGE molecular subtyping surveillance network would contribute to the active surveillance, outbreak investigation and source tracking for Shigellosis.

Bacterial Typing Techniques ; China ; Electrophoresis, Gel, Pulsed-Field ; methods ; Feces ; microbiology ; Humans ; Shigella ; classification ; isolation & purification

OBJECTIVETo study the level of intelligence in children with Duchenne muscular dystrophy (DMD), and the relationship between the level of intelligence and gene mutations.

METHODSOne hundred and two children with DMD between January 2009 and March 2011 were enrolled. DMD gene detection was performed through the multiplex ligation-dependent probe amplification (MLPA) in 84 cases. The level and the structure of intelligence were evaluated by Chinese Wechsler Intelligence Scale for Children (C-WISC) in 50 children with DMD (≥6 years old; DMD group) and in 50 age-and gender-matched healthy children (control group).

RESULTSThe average intelligence quotient (IQ) was 84±21 in 102 children with DMD. Thirty patients (29.4%) had the full intelligence quotient (FIQ) less than 70. The FIQ, verbal intelligence quotient (VIQ), performance intelligence quotient (PIQ) and the scores of 11 sub-tests of intelligence in the DMD group were significantly lower than those in the control group (P<0.01). The IQ in patients with gene mutations at exon 56-79 was the lowest (59.3±11.9), followed by in patients with gene mutations at exon 45-55 (88.6±1.9), at exon 1-29 (97.5±9.6) and at exon 30-44 (102.8±3.8) (P<0.01).

CONCLUSIONSThe FIQ, VIQ and PIQ in children with DMD are lower than those in healthy children. There is association between mental retardation and gene mutations.

Adolescent ; Child ; Child, Preschool ; Humans ; Infant ; Intelligence ; Male ; Muscular Dystrophy, Duchenne ; genetics ; Mutation

OBJECTIVETo investigate the association of genetic polymorphisms in glutathione S-transferases(GST) M1 with hepatitis beta-related hepatocellular carcinoma (HCC).

METHODSGenomic DNA was isolated from peripheral blood of HBsAg carriers, including 91 cases of HCC, 58 liver cirrhosis(LC), 63 chronic hepatitis B(CHB), and 134 normal controls. GSTM1 genotypes were detected by multiplex PCR.

RESULTSThe null genotype of GSTM1 was significantly frequent in patients with HCC compared with controls (P<0.05), but there were no significant differences in frequency of GSTM1 null genotype among patients with liver cirrhosis, chronic hepatitis B and normal controls. Subjects carrying null genotypes of GSTM1 had higher risk of developing HCC compared with those carrying positive genotype (OR=1.81.95% CI=1.05 approximately equals 3.12).

CONCLUSIONThe GSTM1-null genotype may be associated with an increased risk of HCC, but not of CHB and LC.

Adult ; Carcinoma, Hepatocellular ; etiology ; genetics ; virology ; Female ; Genotype ; Glutathione Transferase ; genetics ; Hepatitis B, Chronic ; complications ; genetics ; Humans ; Liver Cirrhosis ; etiology ; genetics ; virology ; Liver Neoplasms ; etiology ; genetics ; virology ; Male ; Middle Aged ; Polymorphism, Genetic

OBJECTIVE: To evaluate the clinical effects and characteristics of combined transperineal and transpubic urethroplasty for patients with complex pelvic fracture urethral distraction defect (PFUDD). METHODS: We retrospectively reviewed the clinical data of 17 male patients with complex posterior PFUDD from January 2010 to December 2019. The complications included urethrorectal fistulas in 2 patients (11.8%), urethroperineal fistula in 1 patient (5.9%). Ten patients had undergone previous treatments: dilatation in 3 patients (17.6%), internal urethrotomy in 1 patient, failed urethroplasty in 6 patients (35.3%), of whom 2 patients had two times of failed urethroplasties. All the patients were performed with urethroplasty by combined transperineal and transpubic approach with removing the entire pubic bone followed by the anastomosis. RESULTS: The mean age of the patients included in this study was 35.5 (range: 21-62) years. The mean length of stricture was 5.5 (range: 4.5-7.0) cm, the mean follow-up was 27 (range: 7-110) months, the mean time of operation was 190 (range: 150-260) min, the mean evaluated blood loss was 460 (range: 200-1 200) mL. There were 5 patients who needed blood transfusion intraoperatively or postoperatively. Wound infection was seen in 4 out of 17 patients and thrombosis of lower extremities in 1 out of 17 patients. The last follow-up showed that the mean postoperative maximum urinary flow rate was 22.7 (range: 15.5-40.7) mL/s. After removing the catheter, one patient presented with decreased urinary flow and symptoms of urinary infection. Cystoscopy showed the recurrent anastomotic stricture, which was cured by internal urethrotomy. In our series, the success rate of the combined transperineal and transpubic urethroplasty was 94.1% (16/17). CONCLUSION Combined transperineal and transpubic urtheroplasty can achieve a tension free anastomosis after removing the entire wedge of pubis in some patients with complex PFUDD. However, this procedure should be completed in a regional referral hospital due to the complexity of the operation and the high percentage of complications.
Adult ; Anastomosis, Surgical ; Fractures, Bone/surgery* ; Humans ; Male ; Middle Aged ; Pelvic Bones ; Retrospective Studies ; Treatment Outcome ; Urethra ; Urethral Stricture ; Young Adult

AIM To study the chemical constituents from Solanum lyratum Thunb.and their anti-tumor activities.METHODS The extract from S.lyratum was isolated and purified by silica gel column chromatography and Sephadex LH-20,then the structures of obtained compounds were identified by physicochemical properties and spectral data.The anti-tumor activities were determined by MTT mothod.RESULTS Twenty-one compounds were isolated and identified as royleanone(1),dinbutyl phthalate(2),dipentyl phthalate(3),sativan(4),2′,4′-dihydroxy-chalcone(5),isopetasin(6),balanophonin(7),10-eicosenoic acid(8),4,6,7-trimethoxy-5-methyl-coumarin(9),hydroxydihydrobovolide(10),axillarin(11),xanthocyanin(12),magnoflorine(13),verlinic acid(14),apigenin(15),luteolin(16),7-ketositosterol(17),pinoresinol(18),bavachinine(19),bisbenzopyran(20),isotachioside(21).The IC50 values of compounds 6-7,11 and 18-19 ranged from(28.37±3.71)to(73.26±8.61)μmol/L.CONCLUSION All the compounds are first isolated from this plant.Compounds 6-7,11 and 18-19 have certain anti-tumor activities.