Objective: To investigate the specific effects of resistant starch (RS) on zinc status in rats. Methods: (1)Zinc metabolism in normal rats: Three groups of Wistar rats were fed with basal diet (control), diet with 13% or 26% RS respectively, for 18 days. Urine, fecal and blood samples were collected for zinc measurement. Zinc apparent absorption was calculated.(2)Zinc status in rats fed with high sucrose (50%) diet: Three groups of Wistar rats were fed with basal diet, high sucrose digestible starch diet (S DS) or high sucrose resistant starch diet (S RS, containing 14% RS) respectively for 12 w. Samples of urine, blood, liver, pancreas and kidney were collected for measurement of zinc content. Results: (1)Zinc apparent absorption in normal rats was: control group 56.59%, 13%RS group 50.11%, and 26%RS group 54.40%. (2)High sucrose diet led to increased postprandial glucose and HbA 1C and depressed fast insulin level in S DS group rats, with decreased plasma and pancreas zinc level (compared with control group, P

Acute Lung Injury ; metabolism ; Animals ; Extremities ; blood supply ; Group II Phospholipases A2 ; metabolism ; Male ; Rats ; Rats, Wistar ; Reperfusion Injury ; metabolism ; Taurine ; pharmacology

Objective To master the area scope and epidemic situation of Kaschin-Beck disease (KBD) in Harbin,and to accumulate data and information for the midterm examination and evaluation of the 12th Five-Year Plan of the National Endemic Disease Prevention and Control.Methods In the original 10 counties (districts,cities) of Harbin with KBD,2 surveys were carried out from 2011 to 2015,5 townships were extracted in each county (district,city),3 villages were extracted in each township,clinical investigation and X-ray examination of 7-12 years old children were carried out;according to the criteria for Diagnosis of Kaschin-Beck Disease,a clinical survey was conducted in 2013 in the 10 counties (districts,cities) with KBD.According to the KBD prevalence and X-ray examination results in each county (district,city),reference to Criteria for Control of Kaschin-Beck Disease Areas,Criteria for Delimitation and Classification of Kaschin-Beck Disease Area,Evaluation Methods for Endemic Diseases Control and Elimination,the types of the disease areas,control and eliminating situation were determined;organization and management of the control and prevention measures were evaluated.Results Currently,there were 10 counties (districts,cities),373 villages,6 969 patients with KBD in Harbin.According to the KBD area division and control standard,369 villages were light KBD areas (prevalence of clinical degrees Ⅰ and above patients or detection rate of 7-12 children by X-ray for local residents ≤ 10％) and 4 villages were medium KBD areas (prevalence of clinical degrees Ⅰ and above patients or detection rate of 7-12 children by Xray for local residents ＞ 10％-≤20％).Clinical census showed that the people under 20 years had no cases with degree Ⅰ and above in each village,X-ray detection rate was 0 in 7-12 years old children,in line with the standards of history KBD areas.There were no clinical KBD cases in 7-12 years old children in all villages of KBD areas,positive detection rate of children by X-ray was 0 in the sampling KBD area villages,in line with the standards of eliminate technical standards of KBD area village.The management index scores of KBD were from 85 to 95 points in every area county (district,city),getting to the eliminating requirement which was more than 85 points.Conclusion The KBD areas have narrowed down and prevalence has declined significantly in Harbin,which has reached the area eliminating standards and the index of basically eliminating KBD proposed by the 12th Five-Year Plan.

Objectives To investigate the effects of seasonal changes on peritoneal dialysis associated peritonitis (PDAP) in patients on peritoneal dialysis (PD),and to provide evidence for clinical prevention and treatment of PDAP.Methods All episodes of PD-related peritonitis during clinic follow-up in maintenance PD patients from Jan 1st,2007 to Dec 31st,2015 in Peking University People's Hospital were reviewed.The incidence of peritonitis,laboratory indexes,pathogens and clinical outcomes in different seasons were recorded and analyzed.One-way ANOVA and chi square test were employed to compare the incidence of PDAP and related data in different seasons,and Pearson correlation was used to analyze correlations between PDAP rate and monthly mean temperature and mean humidity.Results During nine years,a total of 119 PD patients occurred 190 times of peritonitis during home PD.The PDAP rate in summer was the highest,0.21 episodes/year,followed by spring (0.16 episodes/year) and autumn (0.16 episodes/risk year),but there was no significant difference among peritonitis rates in four seasons.There were significant positive correlation between monthly mean temperature,monthly mean humidity and the peritonitis rate (mean temperature:r=0.828,P ＜ 0.01;mean humidity r=0.657,P ＜ 0.05).(2) As for bacteria,in Summer the PDAP rate caused by Staphylococcus aureus and Coagulase negative staphylococcus (CoNS),and Gram-negative bacteria was higher than that in other seasons,but there was no statistical difference.There were significant positive correlation between monthly mean temperature,mean humidity and the rate of CoNS peritonitis (mean temperature:r=0.704,P ＜ 0.05;mean humidity:r=0.607,P ＜ 0.05).(3) There were no statistical difference among results of PD related peritonitis in different seasons about general situation,clinical manifestation,causes of peritonitis and laboratory index before peritonitis episodes.PD procedure-related problems were the main cause of peritonitis in summer and autumn.(4) The cure rate of all peritonitis was 90％.The highest cure rate was in autumn and winter,while the lowest cure rate was in summer,but no statistical difference.Among the peritonitis episodes with treatment failure,52.6％ occurred in summer.Conclusions There is some correlation between the rate of PDAP and seasons.Higher temperature and higher humidity were significantly correlated with higher peritonitis rate,especially the rate of CoNS peritonitis.The prognosis of PDAP in summer was relatively poor,with higher proportion of hospitalization and lower cure rate.

Objective In order to accumulate data for the final evaluation and acceptance of the Twelfth Five-Year Plan of National Endemic Disease Prevention and Control,we investigated the endemic scopes and basic situation of Keshan disease (KD) in Harbin.Methods According to the Criteria for Diagnosis of Keshan Disease (WS/T 210-2011),we conducted clinical survey of KD prevalence in 10 KD endemic counties in Harbin in 2013.2011-2015,we detected and searched for cases in 10 ward counties of Keshan disease.According to the Delimitation and Classification of Keshan Disease Areas and the Evaluation of Endemic Disease Control and Elimination,we determined the regional type,the situation of control and elimination of the disease,at the same time all KD patients were positioned by global positioning system (GPS).Results There were 2 KD endemic counties,12 endemic townships,and 37 KD patients in Harbin.All 12 townships were the light endemic regions of KD.Other townships were conformed to be the history regions with KD.The management index scores of KD reached the elimination requirements which were more than 85 points in every region county (city).Ten region counties got to technical standards for KD elimination.Harbin basically reached the index of KD elimination.The GPS satellite positioning of KD patients were concentrated in the 45.1-45.5 degrees north latitude,and 127.7-128.3 degrees east longitude.Conclusion The regions of KD endemic areas have narrowed down and the prevalence rate has declined significantly in Harbin,which have reached the basic elimination standards of KD by the 12th Five-Year Plan.

OBJECTIVETo assess the diagnostic efficacy of contrast-enhanced CT in diagnosing mandibular invasion of oral cancers.

METHODSPubMed, Excerpta Medica Database (EMBASE), the European Grey Literature Database, Chinese Biomedical Literature Database (CBM), and CQVIP were searched electronically on January 03, 2014. Hand-searching was also performed on 19 relevant Chinese journals. The methodological quality assessment, as suggested in Cochrane Handbook, and the data extraction of the studies included were performed by two reviewers in duplicate. Meta-analysis was conducted using the Meta Disc 1.4 software.

RESULTSFourteen studies that involved 642 participants were included. Among the seven prospective studies, one had a low bias risk and the rest had unclear bias risks. When mandibular invasion was diagnosed the Meta-analysis results showed that the pooled sensitivity (SEN) was 0.718 [95% confidence interval (CI), 0.665-0.767], the pooled specificity (SPE) was 0.909 (95% CI, 0.872-0.938), the area under curve (AUC) was 0.906 1, and the Q* was 0.837 8. When mandibular medullary invasion was diagnosed, the SEN was 0.787 (0.643-0.893), the SPE was 0.904 (0.790-0.968), the AUC was 0.949 6, and the Q* was 0.890 0. The Meta-regression results showed that the smaller slide thickness had a higher diagnosis efficacy.

CONCLUSIONCT showed a high efficacy in diagnosing mandibular or medullary invasion caused by oral cancers. With a high SPE, contrast-enhanced CT can confirm the clinical diagnosis of bone invasion effectively. In addition, selecting a smaller slide thickness CT can increase diagnosis efficacy.

Humans ; Mandible ; Mouth Neoplasms ; Neoplasm Invasiveness ; Prospective Studies ; Sensitivity and Specificity ; Tomography, X-Ray Computed

Objective To observe insulin resistance (IR) in non-diabetic peritoneal dialysis (PD) patients,and analyze its related factors.Methods The non-diabetic PD patients who had been on stable PD at least three months were eligible to enroll.The patients were measured for their height,weight,waist to hip ratio,fasting glucose,fasting insulin,lipids and other biochemical indicators,dialysis adequacy indicators in August 2012,and divided into two groups depended on median HOMA-IR in August 2012.Results A total of 56 patients were enrolled and divided into two groups according to median HOMA-IR,including high IR group (HOMA-IR≥ 1.79,n=29) and low IR group (HOMA-IR ＜ 1.79,n=27).Compared to low IR group,high IR group were older [(57.9±14.2) years vs (48.7±14.5) years],had higher daily dialysate glucose load [(138.7±28.5) mmol/L vs (114.0± 21.5) mmol/L],higher waist-to-hip ratio [(0.91±0.08) vs (0.86±0.07)],higher BMI [(23.0±3.0) kg/m2 vs (21.2±3.1) kg/m2],higher triglycerides [(2.51±1.36) mmol/L vs (1.42±0.48) mmol/L],lower high-density lipoprotein cholesterol [(1.00±0.27) mmol/L vs (1.23±0.32) mmol/L],and lower Kt/V [(1.74±0.37) vs (2.08±0.56)].Multivariate logistic regression showed that age (β=0.122,P=0.033),triglycerides (β=1.798,P=0.030) and daily dialysate glucose load (β=0.094,P=0.031) associated with the degree of insulin resistance.Conclusion More dialysate glucose exposure is a risk factor of the occurrence of insulin resistance in non-diabetic patients with peritoneal dialysis.

Coronary heart disease(CHD) has become a major public health problem in the world, while the unstable angina (UA) is one of an important type. Hypofunction of yang qi in chest and cardiac blood stasis has been considered as the basic pathogenesis of UA.According to the deficiency of yang and blood stasis run through the process of CHD, fu yang and activating blood circulation could be main treatment. Wenxin decoction which has the function of fu yang and activating blood circulation, not only can effectively improve the symptoms of angina pectoris, the ischemic ECG, but also can significantly improve blood rheology, blood lipids and so on. So deepening the theory of ″fu yang and activating blood circulation″ and the application of ″Wenxin decoction″ in the treatment of UA would have an important clinical value for improving the therapeutic efficacy of CHD.

Objective: To compare the effects of 12week maximum fat oxidation (FATmax) intensity exercise combined with dietary restriction and FATmax intensity exercise alone on body composition, blood lipid metabolism and ferroptosis in obese college students with nonalcoholic fatty liver disease(NAFLD),so as to provide a exercise prescription reference for rehabilitation treatment of obese NAFLD college students. Methods: In August 2023,a total of 45 obese NAFLD college students were divided into maximum fat oxidation intensity exercise combined with dietary restriction group (FATmax+DR, n=22) and FATmax group (n=23) by random number table method,who were recruited through online notifications and physical examinations at the Physical Examination Center of Fenyang College of Shanxi Medical University. FATmax group received FATmax intensity exercise with 3 times a week for 12 weeks (FATmax:0.51 g/min, exercise intensity:50.14% VO2max and the heart rate:136.78 times/min). FATmax+DR group underwent 12 weeks of FATmax intensity exercise combined with dietary restriction, and daily dietary energy intake was determined according to resting energy consumption. Body composition, four items of blood lipids and the indicators of oxidative stress and ferroptosis were measured before and after the intervention.The differences of indicators among each group were analyzed by using independent sample t test and paired sample t test. Results: Before the intervention, there were no significant differences in body composition,four items of blood lipid, oxidative stress and iron death between FATmax+DR group and FATmax group (P>0.05). After 12 weeks of intervention, body weight , body mass index(BMI), body fat mass, trunk fat mass, visceral fat area and serum low density lipoprotein(LDL) and malondialdehyde(MDA) levels in FATmax+DR group were significantly lower than those in FATmax group, while serum high density lipoprotein(HDL) and glutathione(GSH) levels were higher than those in FATmax group (t=-2.30，-3.23,-3.97,-5.85,-3.44,-3.06,-2.03,-2.09; 2.73, 2.42, P<0.05). There were no significant differences in serum levels of total cholesterol(TC), triglyceride(TG), superoxide dismutase(SOD) and glutathion peroxidase 4(GPX4) between the two groups (t=1.49, 1.00, -0.01, 0.59, P>0.05). Conclusion Twelveweek FATmax intensity exercise combined with dietary restriction could significantly improve body composition and dyslipidemia, prevent the occurrence of ferroptosis and liver oxidative damage in obese NAFLD college students,which could serve as a timely promotion and application of intervention for obese college students with NAFLD.

AIMTo study the effects of PKC activation on apoptosis during ischemia/reperfusion in L-6TG rat skeletal myoblasts.

METHODSCultured L-6TG cells were divided into 3 groups: control group (C), ischemia/reperfusion group (I/R), PMA + ischemia/ reperfusion group (PMA), SOD, XOD and free calcium and mitochondrial respiration in L-6TG cell were evaluated in each group. Apoptosis was detected by flow cytometer with PI staining method and agarose gel electrophoresis, the immunohistochemical method was used to determine the expression of caspase-3.

RESULTSCompared with I/R group, in PMA group, XOD , free calcium in L-6TG cell and apoptotic percentage all decreased significantly, while SOD and mitochondrial respiration in L-6TG cell increased. DNA fragmentation analysis of L-6TG cell showed no laddering pattern. The expression of caspase-3 was down regulated significantly.

CONCLUSIONActivation of PKC can lessen ischemia/reperfusion injury and apoptosis through lessening oxidative injury and mitochondrial injury, adjusting calcium dyshomeostasis and down expression of caspase-3.

Animals ; Apoptosis ; Calcium ; metabolism ; Caspase 3 ; metabolism ; Cells, Cultured ; Mitochondria ; metabolism ; Myoblasts, Skeletal ; cytology ; metabolism ; Oxidative Stress ; Protein Kinase C ; metabolism ; Rats ; Reperfusion Injury ; metabolism ; pathology