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ObjectiveTo investigate the relationship between nonalcoholic fatty liver disease(NAFLD)and the severity of coronary artery disease (CAD).MethodsRetrospective cross-sectional studies were conducted to examine the relationship between NAFLD and the severity of CAD. CAD was diagnosed by coronary angiography and NAFLD by type-B ultrasound.ResultsThe logistic regression analysis showed that hypertension, NAFLD, diabetes, smoking, and high level of γ-glutamyltransferase were risk factors of multiplevessel lesions and occlusion of CAD( P＜0.05 or P＜0.01 ) , and high levels of total cholesterol and alanine aminotransferase were risk factors of multiple-vessel lesions ( P＜0. 05 or P＜0.01 ) , family history was a risk factor of occlusion of CAD, whereas, high level of high-density lipoprotein cholesterol was an important protective factor of multiple-vessel lesions and occlusion of CAD ( P＜0. 01 ). NAFLD was a dependent risk factor of multiple-vessel lesions and occlusion of CAD( P＜0.05 or P＜0. 01 ). ConclusionsNAFLD could be regarded as a main risk factor of the severity of CAD. Clinicians should pay more attention to the prevention and treatment of NAFLD in order to improve the outcome of CAD.

Objective To investigate the relation of single nucleotide polymorphisms (SNP)45T/G the adiponectin gene with type 2 diabetes of Han nationality in Ningxia.Methods PCR-RFLP method was used to identify the distribution of alleles and genotypes frequencies of SNP45T/G polymorphisms in adiponectin gene in 100 type 2 diabetic patients and 101 normal subjects.Results The distribution of genotypes and alleles frequencies of the SNP45 polymorphisms were significantly different (GG genotype:13% vs 3%,P

The enteric nervous system consists of a network of neurons,neurotransmitters,proteins and its supporting cells in the lining of the gastrointestinal wall. The embryonic development of ENS originates from neural crest stem cells,which start to proliferate and migrate from the neural crest to the mesoderm along the head and tail,and finally migrate into the mesenchyme and form ENS. DNA methylation plays an important role in cell proliferation or differentiation in the process of embryonic development. DNA methylation is regulated by DNA methylation transferase,and the methylation state of the genes is passed on to the offspring in the process of cell proliferation differentiation. DNA methylation is the most profound and extensive mechanism in epigenet-ics research. Thus,this article is to review the recent advances in the effects of epigenetic regulation on the devel-opment of the enteric nervous system.

Objective To explore the efficacy of blood promoter methylation of Sox10 gene in diagnosis of intestinal neuronal dysplasia (IND) and to seek a non-invasive genetic diagnosis method based on peripheral blood for diagnosis of IND.Methods Children diagnosed as Hirschsprung disease (HD) or IND from the Shengjing Hospital of China Medical University and the Capital Institute of Pediatrics were enrolled in 2017-2018.The blood and colon specimens were collected from 9 IND,15 HD and 15 controls (the colon trauma cases).The blood promoter methylation of Soxl0 and its expression level in colon were both detected and the correlation between them was analyzed.The diagnostic efficacy of blood promoter methylation of Soxl0 was analyzed by receiver operating characteristics (ROC) curve.Results The blood promoter methylation level at the 32nd locus of Sox10 was 100％ (90％-100％;95％ CI:91％-98％) in the control,80％ (70％-90％;95％CI:65％-90％) in HD and 60％ (50％-80％;95％ CI:52％-82％) in IND.The expression level of Sox10 in the colon was (1.00 ±0.04) in the control,(2.75 ±0.16) in HD and (3.99 ±0.10) in IND.Western blot showed that the expression of Sox10 protein in the colon of the control group,the HD group and the IND group increased,and the difference was statistically significant (P ＜ 0.05).The blood promoter methylation level was negatively correlated with its expression level in colon (r =-0.88).ROC curve indicated area under curve (AUC) of Sox10 methylation in diagnosis of HD was 0.818,with a cut-off value of 85％ and low diagnostic sensitivity.The AUC in IND was 0.907,with a cut-off value of 85％,producing a sensitivity of 88.9％ and a specificity of 93.3％ respectively.Conclusion Blood promoter methylation of Sox10 might be used as a non-invasive method for diagnosis of IND.

Objective To investigate the prevalence of metabolic syndrome (MS) among adults in rural areas of Ningxia Hui autonomous region.Methods A cross-sectional study was conducted in 10 639 adults enrolled with a multistage method from Jingyuan County.The MS was identified according to Chinese type 2 diabetes prevention guide (2013).Results Among all the subjects, 17.4% of them met the MS definition with the standardized prevalence of 14.7% after adjustment of sex and age.The prevalence and standardized rate of MS in men were 19.9% and 17.3%, and in women were 15.3% and 13.5%.The prevalence of MS in men was higher than that in women(P<0.001) and increased with aging in both genders.The prevalence and standardized rate of abdominal obesity,hyperglycemia,hypertension,high triglycerides,and low HDL-C were 19.5% and 16.7%, 15.0% and 12.9%, 42.0% and 37.1%, 25.8% and 23.1%, 28.5% and 27.7%,respectively.The rate of abdominal obesity was higher in women than in men (20.5% vs 18.2%, P=0.004), whereas the rate of hypertension, high triglycerides, and low HDL-C were higher in men than in women (all P<0.01).The prevalence of having one parameter of the MS was 68.4%.Conclusion The prevalence of MS is higher in rural areas of Ningxia Hui autonomous region, suggesting that a series of comprehensive prevention measures should be carried out to prevent and control the MS so as to improve the public health conditions in rural areas.

Objective To investigate the prevalence of thyroid nodules and thyroid dysfunction in southern mountainouss areas of Ningxia.Methods A cross-sectional study was conducted among a representative sample of 10 639 adults in Jingyuan county with a population proportionate sampling method.High-resolution ultrasound was used to examine the thyroid and fasting blood specimens were collected in the morning for measurement of TSH,FT4,FT3.Chi-square test and spearman rank correlation analysis were used for statistical analysis.Results The prevalence of thyroid nodules was 29.08％,the sex-and age-adjusted rate was 27.17％.The prevalence of thyroid nodules was higher in women than in men (32.68％ vs.24.88％,x2=76.029 2,P＜0.001) and age was positively associated with thyroid nodules (r=0.272,P＜0.001).The rate of thyroid dysfunetion,subclinical hypothyroidism,subclinical hyperthyroidism,hypothyroidism,hyperthyroidism were 17.39％,13.00％,0.42％,0.96％,3.01％,respectively.The prevalence of thyroid nodules was higher in abnormal TSH group than in normal TSH group (39.44％ vs.27.24％,x2=95.624 0,P＜0.001).The level of THS,FT3,FT4 in thyroid nodules group differed fromn control group (Z=-9.144,P＜0.001;Z=-6.140,P＜0.001;Z=-1.997,P=0.046).Conclusion The prevalence of thyroid nodules and thyroid dysfunction were higher in southern mountainous areas of Ningxia.The relationship between thyroid nodules and thyroid function needs further research.We should pay attention to the early screening and diagnosis of thyroid nodules in mountainous areas.

PURPOSE: This study investigated the role of natriuretic peptide receptor 2 (NPR2) on cell proliferation and testosterone secretion in mouse Leydig cells. MATERIALS AND METHODS: Mouse testis of different postnatal stages was isolated to detect the expression C-type natriuretic peptide (CNP) and its receptor NPR2 by quantitative reverse transcription polymerase chain reaction (RT-qPCR). Leydig cells isolated from mouse testis were cultured and treated with shNPR2 lentiviruses or CNP. And then the cyclic guanosine monophosphate production, testosterone secretion, cell proliferation, cell cycle and cell apoptosis in mouse Leydig cells were analyzed by ELISA, RT-qPCR, Cell Counting Kit-8, and flow cytometry. Moreover, the expression of NPR2, cell cycle, apoptosis proliferation and cell cycle related gene were detected by RT-qPCR and Western blot. RESULTS: Knockdown of NPR2 by RNAi resulted in S phase cell cycle arrest, cell apoptosis, and decreased testosterone secretion in mouse Leydig cells. CONCLUSIONS: Our study provides more evidences to better understand the function of CNP/NPR2 pathway in male reproduction, which may help us to treat male infertility.
Animals ; Apoptosis ; Blotting, Western ; Cell Count ; Cell Cycle ; Cell Cycle Checkpoints ; Cell Proliferation ; Enzyme-Linked Immunosorbent Assay ; Flow Cytometry ; Germ Cells ; Guanosine Monophosphate ; Humans ; Infertility, Male ; Lentivirus ; Leydig Cells ; Male ; Mice ; Natriuretic Peptide, C-Type ; Polymerase Chain Reaction ; Receptors, Peptide ; Reproduction ; Reverse Transcription ; RNA Interference ; S Phase ; Testicular Diseases ; Testis ; Testosterone

Objective To investigate the prevalences of the obesity and hypertension in southern mountain regions of Ningxia. Methods A cross-sectional study was conducted among a representative sample of 10 639 adults using questionnaires, physical examinations, and blood pressure measurement in southern mountain areas with a population proportionate sampling method. Results The prevalences of overweight,obesity,central obesity,high percentage of body fat,and hypertension were 33.53%,10.71%,19.50%,27.69%,and 31.57% respectively, which were 30.31%,9.62%,16.70%,24.90%,and 27.61% after age-adjustment in rural areas of Ningxia,and increased with aging(Ptrend<0.05). The prevalences of overweight,obesity,and hypertension were higher in males than those in females(P<0.05),and that of central obesity was higher in females than in males(P=0.003).The prevalences of hypertension in subjects with overweight, obesity, central obesity, high percentage of body fat were 38. 14%, 53.75%,52.69%,and 48.90%,respectively. Body mass index,waist circumference,and percentage of body fat were positively correlated with systolic and diastolic blood pressure(P<0.05). The multivariable logistic model revealed that the risk of hypertension in different types of obesity increased about 1.5 times. Conclusion There is high prevalence of obesity and hypertension among the adults in southern mountain areas of Ningxia. The prevalence of hypertension in obesity,central obesity,and high percentage of body fat is closed to or more than half of the population investigated.

Objective To investigate the correlation between iodine nutritional status and thyroid diseases in some areas of Ningxia. Methods The physical examination, questionnaire survey, and measurement of urine iodine, thyroid function, thyroid associated antibodies were performed, with thyroid ultrasonography in Jingyuan County, Xingqing District and Guyuan City, Ningxia Yinchuan City, totally including 2827 adults. Results The median urinary iodine of all subjects was 258. 7(76. 6-1506. 4) μg/L. The average level of urinary iodine in rural areas [203.3(64. 6-1154)μg/L] was lower than that in cities[340. 7(114. 8-1726. 1)μg/L, Z=19. 514, P>0. 01]. The average urinary iodine level was lower in people over 65 years old[234. 2(58. 9-2285. 4) μg/L, x2=6.449, P=0. 040]. Subjects in hypothyroidism group [232. 5(69. 2-1682. 3) μg/L] had the lowest average urinary iodine level, while hyperthyroidism group[331. 9(102. 4-1862) μg/L] turned to be the highest group( x2=15. 432, P>0. 01). Compared with the normal group, TPOAb and TGAb increased group had similar median levels of urinary iodine (P>0. 05). If compared with single nodule, multiple nodules group and the normal group's median levels of urinary iodine also had no significant difference(P>0. 05). Conclusion Iodine excess was found in the studied population in these areas of Ningxia.