Adenosine Triphosphate ; metabolism ; Colorectal Neoplasms ; diagnosis ; genetics ; DNA Methylation ; Diphosphates ; metabolism ; Glioma ; diagnosis ; genetics ; Humans ; Isocitrate Dehydrogenase ; genetics ; Janus Kinase 2 ; genetics ; Mutation ; Myeloproliferative Disorders ; diagnosis ; genetics ; Polymorphism, Single Nucleotide ; Proto-Oncogene Proteins ; genetics ; Proto-Oncogene Proteins p21(ras) ; Sequence Analysis, DNA ; methods ; Templates, Genetic ; ras Proteins ; genetics

BackgroundResearch demonstrated that vitamin D3 mediated by its receptor has the potent nonclassical effects,including immunomodulatory,antiinflammatory,and neuroprotective properties,and it can enhance the secretion and sensitivity of insulin and therefore down-regulate hyperglycemia and attenuate the corneal edema.ObjectiveThe present study was to investigate the protective effect of vitamin D3on ocular structure in experimental diabetic rat.Methods Twenty-two healthy SPF C57BL/6 rats were randomly divided into vitamine D3 group (8 rabbits),diabetic control group ( 11 rabbits) and normal control group ( 3 rabbits).2％ streptozotocin ( STZ,175 mg/kg)was intraperitoneally injected to create the diabetic models in the rats of the vitamine D3 group and diabetic control group.Blood glucose was examined for 3 times in the third day after STZ injection,and the rats with the blood glucose concentration ＞16.7 mmol/L was identified as the successful diabetic models.After modeling,the rat tail blood was collected for the monitoring of blood glucose.Two weeks after modeling,vitamine D3 was intraperitoneally injected in each week for 5 times.The fundus was examined using direct ophtalmoscope,and the eyeballs were obtained under the excessive anesthesia for the measurement of thickness of the central cornea,retina and choroids by histopathological examination once a week for 7 weeks after administration of vitamin D3.The administration of the animals complied with the Statement of ARVO.ResultsThe corneal edema appeared with the corneal thickness of (339.14± 11.13) μm in the first week and gradually attenuated with time elapse after modeling in the diabetic group ( F =382.446,P =0.000).The corneal thickness values were significantly decreased from the second week through the seventh week in the vitamin D3 group compared with diabetic control group(P＜0.05).The atrophy of the corneal epithelium was found from the fifth week to the seventh week in diabetic control group,but that in vitamin D3 group was slight (P＜0.05).The gradually thinning of the choroids was seen from the first week to the seventh week in the diabetic control group ( F =437.411,P =0.000 ),however,the thickness values in the vitamin D3 group were significantly increased in comparison with the diabetic control group in various time points (P＜0.05).The retina thickness was gradually reduced during the seven-week duration in the diabetic control group (F =91.859,P =0.000),but no significant change was identified in retina thickness in the vitamin D3 group(P＞0.05).ConclusionsVitamin D3 has prevent and therapeutic effects on experimental diabetic oculopathy.

OBJECTIVETo investigate the role of chemokine receptor CXCR3 in patients with atopic dermatitis.

METHODSThe expression of CXCR3 mRNA was measured by fluorescent quantitative polymerase chain reaction, and the relationship between CXCR3 mRNA expression and the disease severity (graded according to SCORAD index system) was assessed by correlation analysis.

RESULTSCXCR3 mRNA expression was significantly higher in patients with atopic dermatitis than in healthy control subjects (P7lt;0.01), and showed obvious positive correlation with SCORAD index system.

CONCLUSIONThese data suggest an important role of CXCR3 in the development and progression of atopic dermatitis.

Adolescent ; Case-Control Studies ; Child ; Dermatitis, Atopic ; genetics ; Female ; Gene Expression Regulation ; Humans ; Male ; RNA, Messenger ; genetics ; metabolism ; Receptors, CXCR3 ; genetics

Objective To investigate the early clinical outcome of peripheral cutting balloon(PCB) in the management of peripheral vessel stenosis.Methods Thirteen patients with peripheral limb vessel stenosis, in which 4 stenoses in hemodialysis access and 9 at lower limb arteries,underwent angioplasty by PCB.For multiple stenosis in the same vessel,the distal one should be expanded firstly.The balloon pressure was controlled in the range of 8 atm to 10 atm(1 atm=10.108 kPa).All the patient were given continuous anticoagulant therapy after the procedure.Results All the procedure were carried out successfully on the 13 patients,and no serious complications occured.The symptoms did not recur in all patients after the procedure.The 5 months' follow-up angiography proved that no restenosis occurred in one patient with previous stenosis at the hemodialysis access.Conclusion The angioplasty with PCB was a safe and reliable procedure in management of the peripheral limb vessel stenosis.The early outcome is satisfying.

Abstract: Objective　To investigate the pollution of paralytic shellfish poisons (PSP) in shellfish sold in Hainan Province from 2018 to 2021. Methods　From 2018 to 2021, the content of 10 paralytic shellfish poisons including saxitoxin (STX), neosaxitoxin (neoSTX), gonyautoxins 1 (GTX1), gonyautoxins 2 (GTX2), gonyautoxins 3 (GTX3), gonyautoxins 4 (GTX4), gonyautoxins 5 (GTX5), decarbamoylsaxitoxin (dcSTX), decarbamoylgonyau toxins 2 (dcGTX2) and decarbamoylgonyau toxins 3 (dcGTX3) in 7 kinds of shellfish commonly sold in 13 cities and counties in Hainan province was analyzed. Results　The detection rate of PSP in 360 shellfish samples was 10.3%. Among them, the highest detection rate of STX was 5.83%, followed by GTX2 detection rate of 4.17%; the detection rate of neoSTX and GTX3 were both 1.67%; the detection rate of GTX1 was 1.39%. None of the five PSP, GTX4, GTX5, dcSTX, dcGTX2 and dcGTX3, were detected. Four types of PSP were detected in fanscallops, two were detected in oysters, mussels and Scapharca subcrenata, only one was detected in scallops, and no toxin contamination was detected in clams and razor clams. A single sample of fanscallops detected a maximum of 4 PSP, and a single sample of oysters, scallops, mussels and Scapharca subcrenata detected a maximum of 1 PSP. The equivalence of PSP in all samples was ND-155.6 μg/kg.The annual detection rate of PSP from high to low was: 20.0% in 2020, 15.6% in 2019, 5.3% in 2018, and 2.0% in 2021, and none of the samples tested exceeded the standard. Continuously detectable STX in 2018-2020, all PSP that could be detected in 2018 were STX. In 2019, in addition to STX detected in scallops and Scapharca subcrenata, neoSTX was also detected in oysters, mussels and Scapharca subcrenata. In 2020, PSP was only detected from scallops, and GTX2 could be detected in all positive specimens, while 5 STX, 5 GTX1 and 6 GTX3 were detected. Only GTX2 detected from scallops in 2021. STX was detected in shellfish sold in 12 cities and counties, GTX2 can be detected in 10 cities and counties, neoSTX can be detected in 5 cities and counties, GTX1 and GTX2 were detected in 4 cities and counties respectively. Shellfish sold in Wenchang and Lingshui markets can detect 5 types of PSP. Conclusion　Some types of shellfish on the market in Hainan are contaminated with some kind of PSP pollution risks, and it is necessary to strengthen the supervision of PSP in marketed shellfish.

OBJECTIVETo explore the mechanism and efficiency of Changji'an (CJA) in treating irritable bowel syndrome through studying the relationship between serotonin transporter (SERT) and visceral hypersensitivity in rats.

METHODSMale SD rats were randomly divided into 4 groups: the normal control group, the model group, the high-dosage and low-dosage CJA (CJAH and CJAL) groups. Visceral hypersensitivity model was established by colorectal distension. Normal saline and different doses of CJA were administrated to rats respectively, starting from the 10th day of modeling for 10 days. After then, the abdominal withdrawal reflex (AWR) was scored for semi-quantitative estimation of visceral sensitivity, and tissues of brain and colon were harvested for detecting expressions of SERT and serotonin (5-HT) with Western blot, real-time PCR and immunohistochemistry.

RESULTSAs compared with the normal controls, in model rats, the AWR score and content of 5-HT in intestinal mucosa were higher (P < 0.05), protein and mRNA expressions of SERT in colon and nucleus raphes dorsalis (NRD) were lower (P < 0.05), but all these indexes were improved significantly after CJA treatment, either in the CJAH or CJAL group (all P < 0.05). Besides, the number of 5-HT energic neuron in the model group and CJA groups was lower than that in the normal control group (P < 0.05).

CONCLUSIONCJA has therapeutic effect for improving visceral hypersensitivity in irritable bowel syndrome by way of regulating colonic expression of SERT and content of 5-HT.

Animals ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; Humans ; Irritable Bowel Syndrome ; drug therapy ; genetics ; metabolism ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Serotonin ; metabolism ; Serotonin Plasma Membrane Transport Proteins ; genetics ; metabolism ; Viscera ; drug effects ; metabolism

OBJECTIVETo analyze the stress distribution of temporomandibular joint (TMJ) in posterior cross-bite of individual teeth and in normal occlusion during the intercuspal occlusion (ICO).

METHODSOn the basis of the geometric TMJ model of normal occlusion, the TMJ finite element model of posterior cross-bite of individual teeth was reconstructed. The occlusal force and boundary conditions were applied on the model. Using three-dimensional finite element method (FEM), the stress distribution of TMJ in posterior cross-bite of individual teeth was analyzed by simulating the ICO load.

RESULTSNo significant differences were found in stress distribution in various TMJ structures between posterior cross-bite of individual teeth and normal occlusion. However, the stress level was higher and the stress distribution was more inhomogeneous in posterior cross-bite of individual teeth than in normal occlusion. In the cross-bite malocclusion of individual posterior teeth, the maximum of von Mises stress was 0.792 MPa, the maximum principal stress was 0.598 MPa and the minimum principal stress was -0.744 MPa. But in normal occlusion, the maximum of von Mises stress was 0.592 MPa, the maximum principal stress was 0.395 MPa and the minimum principal stress was -0.554 MPa.

CONCLUSIONSWhen the ICO load was applied, the stress distribution of TMJ was more inhomogeneous and the stress level was higher in posterior cross-bite of individual teeth than in normal occlusion.

Computer Simulation ; Dental Models ; Dental Occlusion ; Dental Stress Analysis ; methods ; Finite Element Analysis ; Humans ; Malocclusion ; physiopathology ; Temporomandibular Joint ; physiology

Adult ; Aged ; Cell Cycle Proteins ; analysis ; Coal Mining ; Cyclin-Dependent Kinase Inhibitor p27 ; Female ; Humans ; Immunohistochemistry ; Lung ; chemistry ; pathology ; Male ; Middle Aged ; Occupational Diseases ; metabolism ; Pneumoconiosis ; metabolism ; Tumor Suppressor Proteins ; analysis

OBJECTIVETo evaluate the reliability and validity of the Chinese version of addiction severity index (ASI)-5th version (ASI-C-5), in illegal drug users receiving methadone maintenance treatment (MMT) in China.

METHODSOne hundred and eighty-six heroin addicts (144 men and 42 women) receiving MMT at three clinics in Guizhou province, southwest China, were recruited. They were all interviewed with a questionnaire of ASI-C-5 and 35 were re-interviewed at an interval of seven days to assess its test-retest reliability.

RESULTSCronbach's alpha for internal consistency of CSs varied from 0.60 to 0.81 in all domains. Test-retest reliability of composite scores (CSs) of ASI-C-5 were satisfactory (r=0.38-0.97). Based on item analysis and expert's suggestions, five items were deleted and one item was modified in ASI-C-5. Criterion validity of ASI-C-5 was found acceptable, as compared to addicts' self-rating anxiety scale (SAS) and self-rating depression scale (SDS) (r=0.59 and 0.45) except for social support rating scale (SSRS).

CONCLUSIONSASI-C-5 can be used for heroin addicts receiving MMT with acceptable reliability and validity.

Adult ; China ; Female ; Heroin Dependence ; drug therapy ; physiopathology ; Humans ; Male ; Methadone ; therapeutic use ; Reproducibility of Results ; Severity of Illness Index ; Surveys and Questionnaires

OBJECTIVETo investigate the method of the three-dimensional reconstruction of temporomandibular joint (TMJ) on the basis of CT and MRI medical image fusion technology, which establishes good foundation for a series biomechanical studies and clinical analysis.

METHODSThe geometric data for the TMJ model were obtained from a young and healthy male volunteer. Twelve spherical markers were located on the regions of both TMJ and mental tubercles, where CT and MRI scans can reach. The three-dimensional geometric of the hard and soft tissues of TMJ was reconstructed by CT and MRI scans data, which was based on the registration procedures of spherical markers located on the face of the volunteer.

RESULTSThe three-dimensional geometric model of TMJ was obtained, including hibateral articular disc, mandible, glenoid fossa and inferior teeth, and it had better geometric similarity. The results showed that the methods of three-dimensional reconstruction of TMJ with CT and MRI medical image fusion technology can be operated easily and promptly. The constructed model had good morphology.

CONCLUSIONIt is feasible to construct the three-dimensional model of TMJ on the basis of the registration procedures of spherical markers and CT-MRI medical image fusion technology. It has the advantage of simulating both hard and soft tissues reasonably. The model well expresses the shape of the TMJ.

Humans ; Magnetic Resonance Imaging ; Male ; Mandible ; Temporomandibular Joint ; Tomography, X-Ray Computed