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Objective To analyze the changes in blood metabolites in premature infants with bronchopulmonary dysplasia (BPD) within 36 h and in the 3rd week after birth in order to find new biomarkers for diagnosis of BPD.Methods The BPD group included 20 premature infants (＜32 gestational weeks) hospitalized in the Neonatal Intensive Care Unit (NICU) of the Sixth Affiliated Hospital of Sun Yat-sen University and diagnosed with BPD from January 2014 to October 2016.Another 20 non-BPD premature infants with similar gestational age (within one week) who were admitted during the same period were enrolled in the control group.Blood samples of both groups were collected within 36 h and in the 3rd week after birth.Liquid chromatography-tandem mass spectrometry was used to detect blood metabolites and the obtained data were subjected to metabolomics analysis using orthogonal partial least squares discriminant analysis.Chi-square test (or Fisher's exact test),Mann-Whitney U test or t test was used for statistical analysis.Results (1) Twenty and 11 blood samples were collected within 36 h and in the 3rd week after birth from the BPD and the control group,respectively.Compared with the control group,the interval between premature rupture of membranes and delivery,the average length of hospital stay,non-invasive and invasive mechanical ventilation duration and the total duration of supplemental oxygen during hospitalization in the BPD group were longer [M (P25-P75) or ((x)±s):13.5 (0.0-98.3) vs 0.0 (0.0-0.0) h,Z=3.049;(66.6±20.5) vs (43.9±9.3) d,t=4.574;267.0 (199.5-516.1) vs 110.5 (0.0-238.5) h,Z=-3.428;117.5 (0.0-269.3) vs 0.0 (0.0-72.0) h,Z=-2.785;(1 184.0±386.6) vs (595.9±270.3) h,t=5.576;all P＜0.05].(2) Within 36 h after birth,the levels of glycine,proline,tryptophan and piperamide-C5:1 in the BPD group were decreased obviously compared with those in the control group [(201.59±65.01) vs (290.90± 137.56) μmol/L,t=-2.625;103.55 (72.43-434.57) vs 439.48 (103.80-608.98) μ mol/L,Z=-2.245;29.54 (20.30-41.04) vs 47.42 (29.46-73.57) μ mol/L,Z=-2.326;50.04 (35.29-104.78) vs 95.79 (76.21-129.97) μmol/L,Z=-2.029;all P＜0.05].However,the glutamate level was increased [(224.30±67.40) vs (182.67±40.87) μmol/L,t=2.362,P＜0.05].(3) In the 3rd week after birth,the levels of glycine,proline and tryptophan in the BPD group were lower compared to those in the control group [(185.92±61.51) vs (271.85± 115.85) μmol/L,t=-2.177;(39.41± 18.22) vs (63.92± 17.50) μ mol/L,t=-3.217;90.23 (37.93-146.37) vs 330.15 (47.79-622.90) μ mol/L,Z=-2.134;all P＜0.05].However,the ornithine level was higher [(75.09± 43.21) vs (39.25 ± 16.53) μ mol/L,t=2.569,P＜0.05].Conclusions Glycine,proline and tryptophan in blood are potential biomarkers for early diagnosis of BPD.
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Objective To investigate the Allele and genotype frequency distribution of four single nucleotide polymorphisms(SNPs)sites (rs4917,rs491 8,rs1071592,rs2248690) in Fetuin A gene with type 2 diabetes and type 2 diabetes complicated by atherosclerosis of lower limb arteries(ALLA) in Yi Nationality of Chuxiong,and evaluated for association of Fetuin A polymorphisms with ALLA in type 2 diabetes.Methods Four SNPs in Fetuin A were genotyped in One hundred twenty normal controls,sixty one T2DM cases and sixty seven ALLA in type 2 diabetes by polymerase chain reaction-restricted fragment length polymorphism (PCR-RFLP) and allelic specific primer-polymerase chain reaction(ASP-PCR).Results The CC genotype and Allele C of rs1071592 in normal controls was lower than those which ALLA in type 2 diabetes(P ＜ 0.01),and there were no significant differences in frequency of genotype and allele distributions in the polymorphism analysis of rs4917 (C/T),rs4918 (C/G),rs2248690 (A/T) in these three groups (P ＞ 0.05).Logistic regression analysis showed:the CC genotype of rs1071592 in Fetuin A were nominally associated with atherosclerosis of lower limb arteries of T2DM.Conclusion There existed polymorphism of4917(C/T),rs4918(C/G),rs2248690(A/T),rs1071592(C/A) of Fetuin A in Yi nationality of chuxiong.The CC genotype of rs1071592 might be genetic risk factors of type 2 diabetes complicated by ALLA.
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Fetuin A is a kind of glycoprotein that is synthesized and secreted by the liver.It is a natural inhibitor of insulin receptor tyrosine kinase,which is involved in the formation of insulin resistance.It is closely related to the nonalcoholic fatty liver disease.This paper reviews the related research on effect of fetuin A in the occurrence and development of non-alcoholic fatty liver disease.
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BACKGROUND:Diabetes mel itus can give rise to bone metabolic disorders that may involve long-term hyperglycemia, hypoglycemic agents, diet control, estrogen, insulin-like growth factor, leptin, body mass, sex and age. OBJECTIVE:To establish type 2 diabetic rat models, and to explore the influence of type 2 diabetes on bone metabolism. METHODS:High-fat and high-glucose diets combining with 35 mg/kg streptozotocin were used to induce type 2 diabetic model in seven male Sprague-Dawley rats (diabetic group). Thirteen rats in control group were given intraperitoneal injection of the same amount of citric acid and sodium citrate buffer. At 4 weeks after modeling, the bone density of rats was serum detected by dual-energy X-ray, levels of fasting blood-glucose, cholesterol, triacylglycerol, serum calcium, phosphate, alkaline phosphatase, fasting insulin, osteocalcin and C-terminal telopeptide-I were measured, and morphology of bone was observed. RESULTS AND CONCLUSION:Compared with control group, (1) the rat body mass and fasting blood-glucose kept on an overt rise in the diabetic group (P0.05). (4) In the diabetic group, thinner and sparse bone trabeculae were split presenting more free broken ends;(5) the bone density in lumbar spine, double femoral, pelvic and thoracolumbar spine were al significantly decreased (P<0.05). (6) In conclusion, the type 2 diabetic rat model can be successful y induced by 5-week feeding high-fat and high-glucose diets combining with intraperitoneal injection of 35 mg/kg streptozotocin;these mode rats hold some characters, such as hyperglycemia, dyslipidemia, insulin resistance, diminished bone density, and accelerated bone resorption.
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Objective To investigate the correlation of bone mineral density (BMD) with plasma Klotho levels and its related factors in type 2 diabetic patients (T2DM) . Methods BMD was measured by Dual-energy X-ray absorptiometry (DEXA) in 159 T2DM patients. The patients were divided into three groups:normal bone mass, reduced bone mass and osteoporosis. The fasting plasma levels of Klotho were detected in these patients using enzyme linked immuno sorbent assay (ELISA), clinical and biochemical parameters also were tested, the difference and related factors were compared and analyzed in each group. Results Plasma Klotho levels were not significantly different among the three groups (4.95±0.48 vs 4.96±0.47 vs 4.91±0.49,P>0.05) . BMD at the first, second, third, fourth and total lumbar spine, femoral neck, trochanter and total body were not associated with plasma Klotho levels in these patients (P>0.05) . Age, diabetic duration, HDL-C and BMI were independent determinants for BMD in T2DM patients. Conclusions BMD might be not associated with plasma Klotho level in T2DM patients. But age,diabetic duration,HDL-C and BMI are associated with reduced BMD and osteoporosis in T2DM patients.
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Objective To study the effects of chloroquine on proliferation and cell cycle of hepatocellular carcinoma cell line HepG2 cultured in vitro and provide basis for research on chloroquine in therapy for liver cancer.Methods HepG2 cells were divided into six groups:control group and chloroquine (8.00,16.00,32.00,64.00 and 128.00 mmol?L-1 )groups.The cell viability was determined by MTT,the cell cycle and apoptosis were detected by flow cytometry.Results Compared with control group,the cell viabilities were inhibited significantly 24 h after treated with chloroquine (32.00-128.00 mmol?L-1) or 48-72 h after treated with chloroquine (8.00-128.00 mmol?L-1) ( P
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Objective To observe the changes in plasma leptin in type 2 diabetic patients after treatment with ?-glucosidase inhibitor (Acarbose) and investigate the relationships between them.Methods A 8-week randomized double-blind was performed to compare the effects of treatment with Acarbose (50mg, tid) in 43 type 2 diabetic patients. Results (1) When type 2 diabetics compared with non-diabetic controls, fasting plasma glucose(FPG), 2-hr of postprandial plasma glucose (2hBG), A1C, fasting insulin(FIns), triglyceride(TG) and cholesterol(TC)were elevated significantly,2-hr of postprandial insulin(PIns), HDL-C were decreased(P0.05).(3)In type 2 diabetes, there were positive relationships between leptin and BMI, leptin and fasting insulin , leptin and 2-hr of postprandial insulin.(4)After 8 weeks of treatment with acarbose, FPG, 2hBG, A1C, FIns, PIns,Ch and TG decreased significantly (P0.05).Conclusions: When age, gender, and BMI were matched with the controls, the level of leptin in type 2 diabetic patients still has no difference. Acarbose may lower the change in leptin and improve hyperinsulinemia.