Objective: The relationship between serum uric acid (SUA) levels and glycemic indices, including plasma glucose (FPG), 2-hour postload glucose (2h-PG), and glycated hemoglobin (HbA1c), remains inconclusive. We aimed to explore the associations between glycemic indices and SUA levels in the general Chinese population. Methods: The current study was a cross-sectional analysis using the first follow-up survey data from The China Cardiometabolic Disease and Cancer Cohort Study. A total of 105,922 community-dwelling adults aged ≥ 40 years underwent the oral glucose tolerance test and uric acid assessment. The nonlinear relationships between glycemic indices and SUA levels were explored using generalized additive models. Results: A total of 30,941 men and 62,361 women were eligible for the current analysis. Generalized additive models verified the inverted U-shaped association between glycemic indices and SUA levels, but with different inflection points in men and women. The thresholds for FPG, 2h-PG, and HbA1c for men and women were 6.5/8.0 mmol/L, 11.0/14.0 mmol/L, and 6.1/6.5, respectively (SUA levels increased with increasing glycemic indices before the inflection points and then eventually decreased with further increases in the glycemic indices). Conclusion An inverted U-shaped association was observed between major glycemic indices and uric acid levels in both sexes, while the inflection points were reached earlier in men than in women.
Aged ; Asian Continental Ancestry Group ; Blood Glucose/analysis* ; China/epidemiology* ; Cohort Studies ; Diabetes Mellitus/blood* ; Female ; Glucose Tolerance Test ; Glycated Hemoglobin A/analysis* ; Glycemic Index ; Humans ; Male ; Middle Aged ; Uric Acid/blood*

Objective: To investigate the current status of antithrombotic strategy for elderly patients with atrial fibrillation (AF) and acute coronary syndrome (ACS) after stent implantation in Beijing area and to study the safety and efficacy of different therapeutic strategy. Methods: A total of 467 relevant patients were enrolled by re-travelling electronic medical records from 12 hospitals in Beijing area. The patients' mean age was (78.70±3.32) years and they were divided into 2 groups by antithrombotic therapy condition: Triple therapy group, n=17 (3.64％), Double therapy group, n=450 (96.36％). The incidence of major adverse cardiac and cerebral events (MACCE) including all-caused death, non-fatal myocardial infarction, stent thrombosis, target vessel revascularization (TVR), stoke and bleeding was compared between Triple therapy group and Double therapy group.Results: The medication in Double therapy group included aspirin+ticagrelor, aspirin+clopidogrel, clopidogrel+warfarin and cilostazol+clopidogrel; in Triple therapy group was aspirin+clopidogrel+warfarin. Patient with HAS-BLED score&ge;3 was defined as high risk of bleeding and they were all treated by double therapy; HAS-BLED<3 was defined as low risk of bleeding, only 5.03％ patients were treated by triple therapy. 3 patients in Triple therapy group and 33 in Double therapy group suffered from gastrointestinal bleeding, P=0.338; 6 patients in Triple therapy group and 128 in Double therapy group had MACCE, P=0.589; 3 and 80 patients died in Triple therapy group and Double therapy group, P=0.766. Conclusion: Triple therapy was rarely used in elderly AF and ACS patients after stent implantation, double therapy was the main strategy; the incidence of MACCE and mortality were similar between triple and double therapies; patients with triple therapy had the higher incidence of gastrointestinal bleeding.

This study was aimed to demonstrate preliminarily the effects and mechanisms of uremic clearance granule (UCG) ameliorating renal interstitial fibrosis (RIF) by regulating transforming growth factor (TGF)-β1/SnoN/Smads signaling pathway in vivo. Fifteen rats were randomly divided into 3 groups：the normal group,the model group and the UCG group. The rats with renal failure were induced by intragastric administration of adenine and unilateral ureteral obstruction (UUO). After modeling,the rats in the UCG group and in the other groups were intervened by intragastric administration of UCG and distilled water respectively during 3 weeks. The body weight and 24 h urinary protein excretion (Upro) in all rats were tested after drug administration. All rats were killed after drug administration for 3 weeks,blood and kidneys were collected and weighted,kidney appearance and renal morphological characteristics were observed. In addition,serum biochemical indices and the protein expressions of TGF-β1,SnoN,phosphorylated Smad2/3 (p-Smad2/3) and Smad7 in the kidney were evaluated respectively. The results indicated that,after the intervention of UCG,the general state of health,kidney appearance,serum creatinine (Scr),blood urea nitrogen (BUN),uric acid (UA),albumin (Alb),Upro and renal morphological change in model rats were improved in different degrees,respectively. Moreover,UCG down-regulated the protein expressions of TGF-β1 and p-Smad2/3,and up-regulated the protein expressions of SnoN and Smad7 in the kidney. In conclusion,UCG reduces extracellular matrix (ECM) synthesis and delays the progression of renal failure via possibly multi-targeting at regulating TGF-β1/SnoN/Smads signaling pathway in vivo.

This study aimed to clarify preliminarily the effects and mechanisms of Shenkang injection (SKI) promoting extracellular matrix(ECM)degradation via regulating extracellular-signal regulated protein kinase(ERK)1/2/matrix metalloproteinases(MMPs)signaling pathway in renal failure rats. Twenty rats were randomly divided into 4 groups：the Sham group,the Model group,the SKI group and the Enalapril maleate(EM)group. The model rats with renal failure were induced by intragastric administration of adenine and unilateral ureteral obstruction(UUO). After modeling, the rats in SKI group and EM group were intervened by intraperitoneal injection of SKI or intragastric administration of the EM suspension,while the rats in Sham group and Model group were administrated with distilled water respectively for 3 weeks. The 24 h urinary protein excretion(Upro)and urinary N-acety1-β-D-glucosaminidase(UNAG)in all rats were tested after drug administration. All rats were sacrificed after drug administration for 3 weeks,blood and kidney were collected,renal morphological characteristics were observed. Furthermore,serum biochemical indices and the protein expressions of collagen type IV(CIV),MMP-2,MMP-9,tissue inhibitors of metalloproteinase(TIMP)-1,ERK1/2 and phosphorylated-ERK1/2(p-ERK1/2)in the kidney were evaluated respectively. The results indicated that,after the intervention of SKI,serum creatinine(Scr),blood urea nitrogen(BUN),uric acid(UA),albumin(Alb),Upro,UNAG and renal morphological change in model rats were improved at different levels,respectively. Moreover,these actions were similar to EM. In addition to these,SKI adjusted the protein expressions of MMP-2,MMP-9 and TIMP-1,and down-regulated the protein expressions of p-ERK1/2 in the kidney. Moreover,these actions were different from EM. In conclusion,SKI promotes ECM degradation and delays the progression of renal failure possibly through regulating ERK1/2 signaling pathway activation in the kidney and intervening MMPs/TIMP-1 expressions in vivo.

Non-human primates (NHPs) are confirmed as reservoirs of Cryptosporidium spp., Giardia intestinalis, and Enterocytozoon bieneusi. In this study, 197 fresh fecal samples from 8 NHP species in Qinling Mountains, northwestern China, were collected and examined using multilocus sequence typing (MLST) method. The results showed that 35 (17.8%) samples were positive for tested parasites, including Cryptosporidium spp. (3.0%), G. intestinalis (2.0%), and E. bieneusi (12.7%). Cryptosporidium spp. were detected in 6 fecal samples of Macaca mulatta, and were identified as C. parvum (n=1) and C. andersoni (n=5). Subtyping analysis showed Cryptosporidium spp. belonged to the C. andersoni MLST subtype (A4, A4, A4, and A1) and C. parvum 60 kDa glycoprotein (gp60) subtype IId A15G2R1. G. intestinalis assemblage E was detected in 3 M. mulatta and 1 Saimiri sciureus. Intra-variations were observed at the triose phosphate isomerase (tpi), beta giardin (bg), and glutamate dehydrogenase (gdh) loci, with 3, 1, and 2 new subtypes found in respective locus. E. bieneusi was found in Cercopithecus neglectus (25.0%), Papio hamadrayas (16.7%), M. mulatta (16.3%), S. sciureus (10%), and Rhinopithecus roxellana (9.5%), with 5 ribosomal internal transcribed spacer (ITS) genotypes: 2 known genotypes (D and BEB6) and 3 novel genotypes (MH, XH, and BSH). These findings indicated the presence of zoonotic potential of Cryptosporidium spp. and E. bieneusi in NHPs in Qinling Mountains. This is the first report of C. andersoni in NHPs. The present study provided basic information for control of cryptosporidiosis, giardiasis, and microsporidiosis in human and animals in this area.
Animals ; China ; Cryptosporidiosis/*parasitology ; Cryptosporidium/classification/genetics/*isolation & purification ; Enterocytozoon/classification/genetics/*isolation & purification ; Feces/parasitology ; Female ; Genotype ; Giardia lamblia/classification/genetics/*isolation & purification ; Giardiasis/parasitology/*veterinary ; Male ; Microsporidiosis/parasitology/*veterinary ; Molecular Sequence Data ; Phylogeny ; Primate Diseases/*parasitology ; Primates/classification/parasitology

BACKGROUNDData on the epidemiology of hypertension in Chinese non-dialysis chronic kidney disease (CKD) patients are limited. The aim of the present study was to investigate the prevalence, awareness, treatment, and control of hypertension in the non-dialysis CKD patients through a nationwide, multicenter study in China.

METHODSThe survey was performed in 61 tertiary hospitals in 31 provinces, municipalities, and autonomous regions in China (except Hong Kong, Macao, and Taiwan). Trained physicians collected demographic and clinical data and measured blood pressure (BP) using a standardized protocol. Hypertension was defined as systolic BP &ge; 140 mmHg and/or diastolic BP &ge; 90 mmHg, and/or use of antihypertensive medications. BP < 140/90 mmHg and < 130/80 mmHg were used as the 2 thresholds of hypertension control. In multivariate logistic regression with adjustment for sex and age, we analyzed the association between CKD stages and uncontrolled hypertension in non-dialysis CKD patients.

RESULTSThe analysis included 8927 non-dialysis CKD patients. The prevalence, awareness, and treatment of hypertension in non-dialysis CKD patients were 67.3%, 85.8%, and 81.0%, respectively. Of hypertensive CKD patients, 33.1% and 14.1% had controlled BP to < 140/90 mmHg and < 130/80 mmHg, respectively. With successive CKD stages, the prevalence of hypertension in non-dialysis CKD patients increased, but the control of hypertension decreased (P < 0.001). When the threshold of BP < 130/80 mmHg was considered, the risk of uncontrolled hypertension in CKD 2, 3a, 3b, 4, and 5 stages increased 1.3, 1.4, 1.4, 2.5, and 4.0 times compared with CKD 1 stage, respectively (P < 0.05). Using the threshold of < 140/90 mmHg, the risk of uncontrolled hypertension increased in advanced stages (P < 0.05).

CONCLUSIONSThe prevalence of hypertension Chinese non-dialysis CKD patients was high, and the hypertension control was suboptimal. With successive CKD stages, the risk of uncontrolled hypertension increased.

Adult ; Aged ; Awareness ; Female ; Humans ; Hypertension ; complications ; epidemiology ; therapy ; Male ; Middle Aged ; Prevalence ; Renal Insufficiency, Chronic ; complications

BACKGROUNDPrimary percutaneous coronary intervention (PCI) has been clearly identified as the first therapeutic option for patients with acute ST-segment elevation myocardial infarction (STEMI). The importance of reducing door-to-balloon (D2B) time has gained increased recognition. This study aimed to assess the feasibility, safety and efficacy of the strategy of direct ambulance transportation of patients with acute STEMI to catheterization lab to receive primary PCI.

METHODSThe study population included 141 consecutive patients with chest pain and ST-segment elevation who were admitted to the catheterization laboratory directly by the ambulance and underwent primary PCI (DIRECT group). Another 145 patients with STEMI randomly selected from the PCI database, were served as control group (conventional group); they were transported to catheterization laboratory from emergency room (ER). The primary endpoint of D2B time, and secondary endpoint of in-hospital and 30-day major adverse cardiac events (MACE, including death, non-fatal reinfarction, and target vessel revascularization) were compared.

RESULTSBaseline and procedural characteristics between the two groups were comparable, except more patients in the DIRECT group presented TIMI 0-1 flow in culprit vessel at initial angiogram (80.1% and 73.8%, P = 0.04). Comparing to conventional group, the primary endpoint of D2B time was reduced ((54 ± 18) minutes and (112 ± 55) minutes, P < 0.0001) and the percentage of patients with D2B < 90 minutes was increased in the DIRECT group (96.9% and 27.0%, P < 0.0001). The success rate of primary PCI with stent implantation with final Thrombolysis in Myocardial Infarction (TIMI) 3 flow was significantly higher in the DIRECT group (93.8% and 85.2%, P = 0.03). Although no significant difference was found at 30-day MACE free survival rate between the two groups (95.0% and 89.0%, P = 0.06), a trend in improving survival status in the DIRECT group was demonstrated by Kaplan-Meier analysis.

CONCLUSIONDirect ambulance transport of STEMI patients to the catheterization laboratory could significantly reduce D2B time and improve success rate of primary PCI and 30-day clinical outcomes.

Aged ; Ambulances ; statistics & numerical data ; Angioplasty, Balloon, Coronary ; Emergency Service, Hospital ; statistics & numerical data ; Female ; Humans ; Male ; Middle Aged ; Myocardial Infarction ; therapy ; Prospective Studies ; Time Factors ; Treatment Outcome

OBJECTIVETo investigate the brain oxidative stress injury induced by nano-alumina particles in ICR mice.

METHODSSixty male ICR mice were randomly divided into 6 groups: control group, solvent control group, 100 mg/kg micro-alumina particles group, 3 groups exposed to nano-alumina particles at the doses of 50, 100 and 200 mg/kg. The mice were exposed by nasal drip for 30 days. Then levels of malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-PX) in brain tissues of mice were detected.

RESULTSThere was no difference of SOD activity in mouse brain between control group [(17.32 +/- 6.23)U/gHb] and 50 mg/kg nano-alumina particles group [(17.89 +/- 1.82) U/gHb]. The SOD activity [(4.93 +/- 2.30)U/gHb] in 200 mg/kg nano-alumina particles group was significantly lower than that in control group (P < 0.05). The MDA levels in 3 nano-alumina particles groups were (0.76 +/- 0.13), (1.00 +/- 0.30) and (1.16 +/- 0.39)nmol/ml, respectively, which were significantly higher than that [( 0.24 +/- 0.09)nmol/ml] in control group (P < 0.05). The GSH levels in 3 nano-alumina particles groups were (0.72 +/- 0.08), (0.55 +/- 0.19) and (0.61 +/- 0.20)mg/gpro, respectively, which were significantly lower than that [(1.55 +/- 0.34)mg/gpro]] in control group (P < 0.05). The CAT activity in 50 and 100 mg/kg nano-alumina particles groups were (10.40 +/- 3.84) and (10.40 +/- 2.00)U/mgpro, respectively, which were significantly higher than that [(5.79 +/- 0.96) U/mgpro] in control group (P < 0.05). The CAT activity [(3.25 +/- 1.04)U/mgpro] in 200 mg/kg nano-alumina particles group was significantly lower than that in control group (P < 0.05 ).

CONCLUSIONNano-alumina particles can induce the oxidative stress damage in brain tissues of mice.

Aluminum Oxide ; toxicity ; Animals ; Cerebral Cortex ; metabolism ; Glutathione Peroxidase ; metabolism ; Male ; Malondialdehyde ; metabolism ; Mice ; Mice, Inbred ICR ; Nanoparticles ; toxicity ; Oxidative Stress ; Superoxide Dismutase ; metabolism

OBJECTIVETo investigate the oxidative damage to lung tissue and peripherial blood in PM2.5-treated rats.

METHODSPM2.5 samples were collected using an auto-sampling instrument in summer and winter. Treated samples were endotracheally instilled into rats. Activity of reduced glutathione peroxidase (GSH-Px) and concentration of malondialdehyde (MDA) were used as oxidative damage biomarkers of lung tissue and peripheral blood detected with the biochemical method. DNA migration length (microm) and rate of tail were used as DNA damage biomarkers of lung tissue and peripheral blood detected with the biochemical method.

RESULTSThe activity of GSH-Px and the concentration of MDA in lung tissue significantly decreased after exposure to PM2.5 for 7-14 days. In peripheral blood, the concentration of MDA decreased, but the activity of GSH-Px increased 7 and 14 days after experiments. The two indicators had a dose-effect relation and similar changing tendency in lung tissue and peripheral blood. The DNA migration length (microm) and rate of tail in lung tissue and peripheral blood significantly increased 7 and 14 days after exposure to PM2.5. The two indicators had a dose-effect relation and similar changing tendency in lung tissue and peripheral blood.

CONCLUSIONPM2.5 has a definite oxidative effect on lung tissue and peripheral blood. The activity of GSH-Px and the concentration of MDA are valuable biomarkers of oxidative lung tissue damage induced by PM2.5. The DNA migration length (microm) and rate of tail are simple and valuable biomarkers of PM2.5-induced DNA damage in lung tissues and peripheral blood. The degree of DNA damage in peripheral blood can predict the degree of DNA damage in lung tissue.

Animals ; DNA Damage ; drug effects ; Drug Administration Routes ; Drug Administration Schedule ; Lung ; drug effects ; pathology ; Lung Diseases ; blood ; chemically induced ; pathology ; Male ; Oxidative Stress ; Particle Size ; Particulate Matter ; administration & dosage ; toxicity ; Rats ; Rats, Wistar ; Seasons

Objective To study the effect of carbon monoxide (CO) on hydrogen sulfide (H2 S) in guinea pigs with allergic rhinitis (AR) through intervention treatment. Methods AR model in guinea pigs was established by using ovalbumin. The animals were divided into three groups. Group one was sensitized continuously by ovalbumin, group two was treated with Hemin as induction group, and group three was treated with zinc protoporphyrin (ZnPP) as suppression group. The guinea pigs treated with saline were used as control. The behavior science scores, eotaxin concentration of nasal lavage, IgE in blood serum were recorded, and the plasma concentrations of CO and H2S were determinated, then the expression of hemeoxygenase (HO) -1, cystathionine-β-synthase (CBS) and cystathionine-γ-lyase (CSE) were measured in nasal mucosa by fluorescent quantitative RT-PCR. Results The behavior science scores, concentration of eotaxin in nasal lavage, IgE in blood serum and concentration of CO in plasma of sensitized group were higher than those of control (P<0.01), and the expression of HO-1 in nasal mucosa was also higher than control [(7.61±2.80)×10-3 vs (2. 32±1.14)×10-3, p <0.05]. All these items were higher when treated with Hemin and lower when treated with ZnPP (P<0.05). The concentration of H2S in plasma was lower than control with significant differences [(14. 80±1.60)μmol/L vs (18. 90±1.00)μmol/L, P <0.01], the expression of CSE was also lower than control (P<0.05), and both of them were lower with Hemin induced and higher with ZnPP (P<0.05). The expression of CBS was very low and had no significant differences between groups (P>0.05), so it indicated that the CSE was the key enzyme for endogenous H2S product in nasal mucosa. Moreover the concentration of H2S was negatively correlated with CO (r = -0.702, P<0.001). Conclusions Endogenous CO and H2S play a significant role in the pathogenesis of AR, and HO-1 and CSE are the main speed-relate enzymes respectively . The H2S is also influenced by CO.