The Effect of Tuberculosis Infection on Pancreatic Beta-Cell Function in Patients with Type 2 Diabetes Mellitus

Objective: The aim of this study is to investigate how individuals with type 2 diabetes mellitus’ pancreatic β-cell function index and insulin resistance index are affected by tuberculosis infection. Methods: The study group consisted of 89 patients with type 2 diabetes mellitus and tuberculosis infection who were admitted to Jingzhou Chest Hospital between March 2019 and March 2021. Gender and duration of diabetes were matching conditions. The control group was made up of 89 patients with type 2 diabetes who were admitted to Jingzhou Central Hospital’s endocrinology department during the same period. The two patient groups provided general information such as gender, age, length of diabetes, and blood biochemical indexes such as glycosylated hemoglobin (HbA1c), fasting glucose (FPG), and fasting C-peptide (FC-P). The HOMA calculator was used to calculate the HOMA-β and the HOMA-IR, and intergroup comparisons and correlation analyses were carried out. Results: Regarding gender, age, disease duration, FC-P, and HbA1c, the differences between the two groups were not statistically significant (P > 0.05). However, BMI, FPG, HOMA-β, and HOMA-IR showed statistically significant differences (P < 0.05). In comparison to the control group, the study group’s HOMA-β was lower and its HOMA-IR was greater. According to Spearman’s correlation analysis, HOMA-β had a negative association (P th FPG, HbA1c, and the length of the disease, and a positive correlation with BMI and FC-P. A positive correlation was found between HOMA-IR and BMI, FPG, and FC-P (P < 0.01), as well as a correlation with the length of the disease (P > 0.05) and HbA1c. Conclusions: In type 2 diabetes mellitus combined with tuberculosis infection, the patients had higher FPG levels and lower FC-P levels, the secretory function of pancreatic β-cells was more severely impaired, and insulin resistance was more obvious.

Relationship between Free Thyroxine and Islet Beta-cell Function in Euthyroid Subjects

Thyroid hormones have a specific effect on glucose-induced insulin secretion from the pancreas.We aimed to investigate the association between euthyroid hormones and islet betacell function in general population and non-treated type 2 diabetes mellitus(T2DM)patients.A total of 5089 euthyroid participants(including 4601 general population and 488 non-treated T2DM patients)were identified from a cross-sectional survey on the prevalence of metabolic diseases and risk factors in East China from February 2014 to June 2016.Anthropometric indices,biochemical parameters,and thyroid hormones were measured.Compared with general population,non-treated T2DM patients exhibited higher total thyroxine(TT4)and free thyroxine(FT4)levels but lower ratio of free triiodothyronine(T3):T4(P<0.01).HOMA-βhad prominently negative correlation with FT4 and positive relationship with free T3:T4 in both groups even after adjusting for age,body mass index(BMI)and smoking.When analyzed by quartiles of FT4 or free T3:T4,there were significantly decreased trend of HOMA-β going with the higher FT4 and lower free T3:T4 in both groups.Linear regression analysis showed that FT4 but not FT3 and free T3:T4 was negatively associated with HOMA-β no matter in general population or T2DM patients,which was independent of age,BMI,smoking,hypertension and lipid profiles.FT4 is independently and negatively associated with islet beta-cell function in euthyroid subjects.Thyroid hormone even in reference range could play an important role in the function of pancreatic islets.

Association of point in range withβ-cell function and insulin sensitivity of type 2 diabetes mellitus in cold areas

Background and Objective:Self-monitoring of blood glucose(SMBG)is crucial for achieving a glycemic target and upholding blood glucose stability,both of which are the primary purpose of anti-diabetic treatments.However,the association between time in range(TIR),as assessed by SMBG,andβ-cell insulin secretion as well as insulin sensitivity remains unexplored.Therefore,this study aims to investigate the connections between TIR,derived from SMBG,and indices representingβ-cell functionality and insulin sensitivity.The primary objective of this study was to elucidate the relationship between short-term glycemic control(measured as points in range[PIR])and bothβ-cell function and insulin sensitivity.Methods:This cross-sectional study enrolled 472 hospitalized patients with type 2 diabetes mellitus(T2DM).To assessβ-cell secretion capacity,we employed the insulin secretion-sensitivity index-2(ISSI-2)and(ΔC-peptide_(0-120)/Δglucose_(0-120))×Matsuda index,while insulin sensitivity was evaluated using the Matsuda index and HOMA-IR.Since SMBG offers glucose data at specific point-in-time,we substituted TIR with PIR.According to clinical guidelines,values falling within the range of 3.9-10 mmol were considered"in range,"and the corresponding percentage was calculated as PIR.Results:We observed significant associations between higher PIR quartiles and increased ISSI-2,(ΔC-peptide_(0-120)/Δglucose_(0-120))×Matsuda index,Matsuda index(increased)and HOMA-IR(decreased)(all P<0.001).PIR exhibited positive correlations with log ISSI-2(r=0.361,P<0.001),log(ΔC-peptide_(0-120)/Δglucose_(0-120))×Matsuda index(r=0.482,P<0.001),and log Matsuda index(r=0.178,P<0.001)and negative correlations with log HOMA-IR(r=-0.288,P<0.001).Furthermore,PIR emerged as an independent risk factor for log ISSI-2,log(ΔC-peptide_(0-120)/Δglucose_(0-120))×Matsuda index,log Matsuda index,and log HOMA-IR.Conclusion:PIR can serve as a valuable tool for assessingβ-cell function and insulin sensitivity.

A Study on Enhancing Pancreatic Islet Function in Type 2 Diabetes and Coronary Heart Disease Patients with Liraglutide and Metformin Combination Therapy

Objective:To investigate the impact of combining liraglutide with metformin on the enhancement of pancreatic islet function in patients with type 2 diabetes and coronary heart disease.Methods:60 patients with type 2 diabetes and coronary heart disease admitted from February 2022 to August 2023 were selected as research subjects.They were randomly assigned to either control or treatment groups,with 30 patients in each.The control group received metformin alone,while the treatment group received liraglutide in combination with metformin.Various indicators,including blood sugar levels,pancreatic islet function,and cardiac function between the two groups were compared.Results:The results of FPG,2hPG,HbA1c,HOMA-IR,NT-proBNP,and LVEDD in the treatment group were lower than those in the control group,whereas the values of FINS,HOMA-β,E/A,and LVEF in the treatment group were higher than those in the control group(P<0.05).Conclusion:The use of liraglutide in combination with metformin significantly benefits patients with type 2 diabetes and coronary heart disease.It leads to improved pancreatic islet function,better blood sugar control,and enhanced cardiac function.This combination therapy is recommended for clinical adoption.

Study on the relationship between maternal thyroid function and islet β-cell function and insulin resistance in early pregnancy

Objective To explore the relationship between maternal thyroid function and pancreatic isletβ-cell function and insulin resistance (IR) in early pregnancy.Methods A total of 368 pregnant women were enrolled in this study and divided into normal control (NGT) group (n=287) and GDM group (n=81).

EFFECTS OF GLUCAGON ON ISLET β CELL FUNCTION IN PATIENTS WITH DIABETES MELLITUS

Objective To evaluate islet β cell response to intravenous glucagon(a non-glucose secretagogue)stimulation in diabetes mellitus.Methods Nineteen patients with type 1 diabetes(T1D)and 131 patients with type 2 diabetes(T2D)were recruited in this study.T2D patients were divided into two groups according to therapy:36 cases treated with insulin and 95 cases treated with diet or oral therapy.The serum C-peptide levels were determined at fasting and six minutes after intravenous injection of 1 mg of glucagon.Results Both fasting and 6-minute post-glucagon-stimulated C-peptide levels in T1D patients were significantly lower than those of T2D patients(0.76±0.36 ng/mL vs.1.81±0.78 ng/mL,P<0.05;0.88±0.42 ng/mL vs.3.68±0.98 ng/mL,P<0.05).In T1D patients,the C-peptide level after injection of glucagon was similar to the fasting level.In T2D,patients treated with diet or oral drug had a significantly greater fasting and stimulated C-peptide level than those patients received insulin therapy(2.45±0.93 ng/mL vs.1.61±0.68 ng/mL,P<0.05;5.26±1.24 ng/mL vs.2.15±0.76 ng/mL,P<0.05).The serum C-peptide level after glucagon stimulation was positively correlated with C-peptide levels at fasting in all three groups(r=0.76,P<0.05).Conclusions The 6-minute glucagon test is valuable in assessing the function of islet β cell in patients with diabetes mellitus.It is helpful for diagnosis and treatment of diabetes mellitus.

Islet cell transplantation as a cure for insulin dependent diabetes: current improvements in preserving islet cell mass and function

OBJECTIVE: To review the current progress of islet cell transplantation in patients with insulin-dependent diabetes, emphasizing on the difficulties with recovering and preserving islet cell mass and function, 30% of which is lost during the peri-transplantation period. RESULTS: The islet-cell isolation technique is perfected, but improvements are still progressing in two major directions: preservation of islet cells and tolerance induction. Optimum islet cell viability and function depends on appropriate revascularization of the islet graft and blockade of thrombus formation as well as cytokine and free radical release. Conditioning the islet cells in-vitro prior to transplantation to either upregulate VEGF expression or downregulate NF-kappa B transcription factor has proven to improve revascularization and to prevent islet cell apoptosis and cytokine-mediated damage. Tolerance induction is currently being best achieved by selecting and combining immunosuppressive agents such as monoclonal antibodies which target the major signaling molecules during immune activation, but which are least toxic to islet cells. CONCLUSIONS: Patients with insulin-dependent diabetes will greatly benefit from current developments in effective approaches to protect islets during the peritransplant period. Emerging interest in stem cell biology and differentiation may provide the ultimate solution to the problem of organ scarcity and islet cell protection from the peritransplant induced damage.

The relationship between insulin resistance/β-cell dysfunction and diabetic retinopathy in Chinese patients with type 2 diabetes mellitus： the Desheng Diabetic Eye Study

AIM： To investigate the relationship between insulin resistance （IR）/β-cell dysfunction and diabetic retinopathy （DR） in Chinese patients with type 2 diabetes mellitus （T2DM）, and to explore further whether there were differences in the relationship among diabetic patients with higher and lower body mass index （BMI）. METHODS： Cross-sectional study. A total of 1466 subjects with T2DM were recruited in a local Desheng Community of urban Beijing from November 2009 to June 2012 for the cohort of Beijing Desheng Diabetic Eye Study. Standardized evaluation was carried out for each participant, including questionnaire, ocular and anthropometric examinations, and laboratory tests. Seven fields 30° color fundus photographs were used for DR grading according to the Early Treatment Diabetic Retinopathy Study protocols. Homeostatis Model Assessment （HOMA） method was employed for IR and β-cell function assessment. RESULTS： After excluding those participants who were treated with insulin （n=352） or had missing data of fasting insulin （n=96）, and further excluding those with poor quality of retinal photographs （n=10）, a total of 1008 subjects were included for the final analysis, 406 （40.3%） were men and 602 （59.7%） were women, age ranging fiom 34 to 86 （64.87±8.28）y. Any DR （levels 14 and above） was present in 278 （27.6%） subjects. After adjusting for possible covariates, the presence of any DR did not correlate with HOMA IR [odds ratio （OR） 1.51, 95% confidence interval （Cl） 0.87-2.61, P=0.14] or HOMA β-cell （OR 0.71, 95%CI 0.40-1.26, P=0.25）. After stratification by BMI, the presence of any DR was associated positively with HOMA IR （OR 2.46, 95%CI： 1.18-5.12, P=0.016）, and negatively with HOMA β-cell （OR 0.40, 95%CI： 0.19-0.87, P=0.021） in the group of patients with higher BMI （225 kg/m2）. In the group of patients with lower BMI （〈25 kg/m2）, the presence of any DR was not associated with HOMA IR （OR 1.00, 95%C1： 0.43-2.33, P=I.00） or HOMA β-cell （OR 1.41, 95%CI： 0.60-3.32, P=0.43）. CONCLUSION： The data suggest that higher IR and lower 13-cell function are associated with the presence of DR in the subgroup of diabetic patients with higher BMI. However, this association is not statistically significant in diabetic patients with lower BMI.

Effect of Renin Angiotensin System Blockade on the Islet Microvessel Density of Diabetic Rats and Its Relationship with Islet Function

To investigate the effects of rennin angiotensin system blockade on the microvessel density in islets of diabetic rats and its relationship with islet function, diabetes model was created by feeding of high-caloric laboratory chow plus intraperitoneal injection of a small dose of streptozotocin （30 mg/kg）. After 8 weeks intervention with perindopril （AE, n=10） or valsartan （AR, n=10）, the islet function of the animals was evaluated by intravenous insulin release test （IVIRT）. The pancreases were immunohistochemically stained to analyze the content of insulin and vascular endothelial growth factor （VEGF） in the islets. The microvessel density （MVD） of islets was detected by counting CD34 positive cells. The hypoxia inducible factor （HIF）-1α mRNA expression in the islets was detected by RT-PCR. Compared with normal control group （NC, n=10）, the area under the curve for insulin from 0 to 30 min （AUCI0-30） of diabetes group （DM, n=8） was decreased by 66.3%; the insulin relative concentration （IRC） of βcell was decreased significantly; the relative content of VEGF was increased obviously [（–4.21±0.13） vs （–4.06±0.29）]; MVD in islets was decreased by 71.4%; the relative expression of HIF-1α mRNA was increased by 1.19 times （all P〈0.01）. Compared with DM group, the AUCI0-30 of AE and AR group was increased by 44.6% and 34.9% respectively; IRC was also increased significantly; the relative content of VEGF was decreased by 21.2% and 21.7% respectively; MVD was increased by 62.5% and 75.0% respectively; the relative expression of HIF-1α was decreased by 27.2% and 29.0% respectively （all P〈0.01 or P〈0.05）. There were no significant differences in the said indexes between group AE and AR. It is concluded that the blockade of RAS may ameliorate islets function of diabetic rats by increasing the MVD in islets.

Influence of heme oxygenase-1 gene transfer on the viability and function of rat islets in in vitro culture

AIM: To investigate the influence of heme oxygenase-1 (HO-1) gene transfer on the viability and function of cultured rat islets in vitro. METHODS: Islets were isolated from the pancreata of Sprague-Dawley rats by intraductal collagenase diges- tion, and purified by discontinuous Ficoll density gradient centrifugation. Purified rat islets were transfected with adenoviral vectors containing human HO-1 gene (Ad- HO-1) or enhanced green fluorescent protein gene (Ad- EGFP), and then cultured for seven days. Transfection was confirmed by fluorescence microscopy and Western blot. Islet viability was evaluated by acridine orange/ propidium iodide fluorescent staining. Glucose-stimulated insulin release was detected using insulin radioimmuno- assay kits and was used to assess the function of islets. Stimulation index (SI) was calculated by dividing the insulin release upon high glucose stimulation by the insulin release upon low glucose stimulation. RESULTS: After seven days culture, the viability of cultured rat islets decreased significantly (92% ± 6% vs 52% ± 13%, P < 0.05), and glucose-stimulated insulin release also decreased significantly (6.47 ± 0.55 mIU/ L/30IEQ vs 4.57 ± 0.40 mIU/L/30IEQ, 14.93 ± 1.17 mIU/L/30IEQ vs 9.63 ± 0.71 mIU/L/30IEQ, P < 0.05). Transfection of rat islets with adenoviral vectors at an MOI of 20 was efficient, and did not impair islet function. At 7 d post-transfection, the viability of Ad-HO-1 transfected islets was higher than that of control islets(71% ± 15% vs 52% ± 13%, P < 0.05). There was no significant difference in insulin release upon low glucose stimulation (2.8 mmol/L) among Ad-HO-1 transfected group, Ad-EGFP transfected group, and control group (P > 0.05), while when stimulated by high glucose (16.7 mmol/L) solution, insulin release in Ad-HO-1 transfected group was significantly higher than that in Ad-EGFP transfected group and control group, respectively (12.50 ± 2.17 mIU/L/30IEQ vs 8.87 ± 0.65 mIU/L/30IEQ; 12.50 ± 2.17 mIU/L/30IEQ vs 9.63 ± 0.71 mIU/L/30IEQ, P < 0.05). The SI of Ad-HO-1 transfected group was also significantly higher than that of Ad-EGFP transfected group and control group, respectively (2.21 ± 0.02 vs 2.08 ± 0.05; 2.21 ± 0.02 vs 2.11 ± 0.03, P < 0.05). CONCLUSION: The viability and function of rat islets decrease over time in in vitro culture, and heme oxygenase-1 gene transfer could improve the viability and function of cultured rat islets.

Small intestinal submucosa improves islet survival and function during in vitro culture

AIM: To evaluate the recovery and function of isolated rat pancreatic islets during in vitro culture with small intestinal submucosa (SIS).METHODS: Pancreatic islets were isolated from Wistar rats by standard surgical procurement followed by intraductal collagenase distension, mechanical dissociation and Euroficoll purification. Purified islets were cultured in plates coated with multilayer SIS (SIS-treated group) or without multilayer SIS (standard cultured group) for 7 and 14 d in standard islet culture media of RPMI 1640. After isolation and culture, islets from both experimental groups were stained with dithizone and counted. Recovery of islets was determined by the ratio of counts after the culture to the yield of islets immediately following islet isolation. Viability of islets after the culture was assessed by the glucose challenge test with low (2.7 mmol/L) and high glucose (16.7 mmol/L)solution supplemented with 50 mmol/L 3-isobutyl-1-methylxanthine (IBMX) solution. Apoptosis of islet cells after the culture was measured by relative quantification of histone-complexed DNA fragments using ELISA.RESULTS: After 7 or 14 d of in vitro tissue culture, the recovery of islets in SIS-treated group was significantly higher than that cultured in plates without SIS coating. The recovery of islets in SIS-treated group was about twice more than that of in the control group. In SIS-treated group, there was no significant difference in the recovery of islets between short- and long-term periods of culture (95.8±1.0% vs 90.8±1.5%, P>0.05). When incubated with high glucose (16.7 mmol/L) solution,insulin secretion in SIS-treated group showed a higher increase than that in control group after 14 d of culture (20.7±1.1 mU/L vs11.8±1.1 mU/L, P<0.05). When islets were placed in high glucose solution containing IBMX,stimulated insulin secretion was higher in SIS-treated group than in control group. Calculated stimulation index of SIS-treated group was about 23 times of control group. In addition, the stimulation index of SIS-treated group remained constant regardless of short- and long-term periods of culture (9.5±0.2 vs 10.2±1.2, P>0.05).Much less apoptosis of islet cells occurred in SIS-treated group than in control group after the culture.CONCLUSION: Co-culture of isolated rat islets with native sheet-like SIS might build an extracellular matrix for islets and provide possible biotrophic and growth factors that promote the recovery and subsequent function of islets.

Effect of small intestinal submucosa on islet recovery and function in vitro culture

BACKGROUND: The ability to maintain isolated human islet preparation in tissue culture has recently been adopted by most islet transplant centers to improve the safety and practicality of islet transplantation. However, maintaining islet viability and recovery remains a challenge in clinical setting. Extracellular matrix (ECM) is one of the most important components of islet microenvironment. The reconstruction of the cell-matrix relationship seems to be effective in improving the loss of differentiated islet structure and function. Small intestinal submucosa ( SIS ) , a naturally occurring ECM, has been investigated to be able to promote wound healing, tissue remodeling, and cell growth. The purpose of this study was to evaluate the recovery and function of isolated rat pancreatic islets after in vitro culture with SIS. METHODS: Pancreatic islets were isolated from Wistar rats by using standard surgical procurement followed by intra-ductal collagenase distension, mechanical dissociation, and EuroFicoll purification. Groups of purified islets were cultured in plates which were coated with multilayer SIS (SIS-treated group) or without ( standard cultured group) for 7 days and 14 days in standard islet culture conditions of RP-MI 1640 tissue culture media in humidified atmosphere containing 95% air and 5% CO2 at 37 ℃. The mean recovery of islets after the culture period was determined by sizing duplicate counts of a known volume and their viability was assessed by static incubation with low glucose (2.7 mmol) , high glucose (16.7 mmol) and high glucose solution supplemented with 50 μm 3-isobutyl-1-methylxanthine (IB-MX) solution. RESULTS: After 7 days and 14 days of in vitro tissue culture, the SIS-treated group showed a significantly higher recovery compared with those cultured under standard conditions. The recovery in the SIS-treated group was about two times of the control group cultured in standard conditions after 14 days culture. In the SIS-treated group, there was no statistically difference between the short and long periods of culture ( 95. 8 ± 1.0% vs. 90. 8±1. 5% , P 】 0.05). During incubation in high glucose (16.7 mmol) solution, there was a 2-3 fold increase in insulin secretion from both groups, but the SIS-treated group showed a higher increase than the standard cultured group after 14-day culture (20.7 ±1.1 mU/L vs. 11. 8 ±1.1 mU/L, P 【 0. 05). When islets were placed in the high glucose solution supplemented with IBMX, the stimulated insulin response in the SIS-treated group was higher than that in the standard cultured group in spite of the duration of the culture. The stimulation index of the SIS-treated group was about 2-3 times of the standard cultured group. In addition , after a long period of culture, the stimulation index of the SIS-treated group was statistically equivalent with that of the short period of culture (9.5 ±0.2 vs. 10.2 ±1.2, P】0.05). CONCLUSIONS: The co-culture of isolated rat islets with native sheet-like SIS can provide an excellent extracellular matrix, possible biotrophic and growth factors that promote the recovery and subsequent function of islets after in vitro tissue culture. In view of results of this study and rapid degradation of SIS in vitro, future studies will investigate the extended duration of culture and the effect of SIS on islets in vitro.

Level of Fasting C-Peptide as a Predictor of <i>β</i>-Cell Function in Sudanese Patients with Type 2 Diabetes Mellitus

Objective: In this study, we assessed the level of fasting C-peptide as a predictor of β-cell function and insulin resistance in patients with Type 2 diabetes mellitus (T2DM), Gezira State-Sudan. Methods: In this cross-sectional study, 100 T2DM patients attending the Diabetic patients care Centre were recruited, thirty five patients were males and sixty five were females, the mean age of the patients was 50.29 ± 0.456 years, and body mass index (BMI) was 26.54 ± 0.437. We estimated β-cell function using fasting C-peptide levels;homeostatic model assessment for β-cell function (HOMA-B) and insulin resistance (HOMA-IR) were calculated from C-peptide and fasting blood glucose (FBG). Results: C-peptide was significantly and positively correlated with HOMA-B and HOMA-IR. FBG also showed significant negative correlation with HOMA-B, but was positively and significantly correlated with HOMA-IR. HbA1c was negatively and significantly correlated with HOMA-B. Patients with low C-peptide levels had increased FBG and HbA1c level, while patients with high C-peptide levels were having high HOMA-IR and HOMA-B. Conclusions: Fasting C-peptide is a useful marker of pancreatic β-cell function, and its circulating levels could be used to evaluate insulin secretion and insulin resistance. Moreover, HOMA-IR is an effective index to achieve glycemic control by appropriate pharmacologic treatment of T2DM.

Improved <i>β</i>-cell function rather than increased insulin sensitivity is associated with reduction in hemoglobin A1c in newly diagnosed Type 2 diabetic patients treated with metformin

β-cell dysfunction and decreased insulin sensitivity are believed to be two chief mechanisms that participate in deterioration of glycemic control in Type 2 diabetes. Meformin is widely accepted as the first-line oral agent in the treatment of Type 2 diabetes. However, the relative contributions of improved β-cell function and increased insulin sensitivity to reduction in hemoglobin A1c (HbA1c) are unclear in newly diagnosed Type 2 diabetic patients treated with metformin. We investigated β-cell function and insulin sensitivity in relation to reduction in HbA1c in 20 newly diagnosed Type 2 diabetic patients (17 men and 3 women, mean age 49.1 ± 10.1 years, mean body mass index 26.4 ± 5.2 kg/m2) treated with metformin for 16 weeks. We used homeostasis model assessment (HOMA) 2%B and HOMA2%S as estimates of β-cell function and insulin sensitivity, respectively. Median HOMA2%B and HOMA2%S significantly increased from 38.8 to 68.8 (p p = 0.004), respectively. In univariate regression analysis, reduction in HbA1c was highly correlated with change in HOMA2%B (r = -0.866, p < 0.001), but not with that in HOMA2%S (r = -0.264, p = 0.260). Furthermore, multivariate regression analysis with reduction in HbA1c as a dependent variable showed that increase in HOMA2%B but not that in HOMA2%S was a significant dependent variable (β = -0.847, p β-cell function rather than increased insulin sensitivity is associated with reduction in HbA1c. These results suggest that metformin reduces HbA1c chiefly through improved β-cell function rather than increased insulin sensitivity in patients with newly diagnosed Type 2 diabetes.

Effects of Sig Leo Dean on serum ceramide, chemerin, islet function and oxidative stress indexes in T2DM rats

Objective: To investigate the effect of Sig Leo Dean on serum ceramide, chemerin, islet function and oxidative stress index in type 2 diabetes mellitus (T2DM) rats. Methods: Fifty-four SPF male SD rats aged 4 weeks were selected and randomly divided into blank group, model group and treatment group with 18 rats in each group. After feeding with high-fat and high-sugar diet for 6 weeks, the model group and treatment group were given intraperitoneal injection of streptozotocin (STZ) to establish the model of T2DM rats. After successful modeling, the treatment group was given cegliptine 10 mg/kg/d, and the blank group and model group were given the same amount of saline. After 6 weeks, the indicators were tested and compared. Results: Before the intervention, the model group and treatment group rat body weight, FPG, Fins and HOMA-IR were significantly higher than the blank group (P<0.05), model group and HOMA- beta treated rats were significantly lower than that of the control group (P<0.05);after the intervention, FPG, Fins and HOMA-IR were significantly higher than the control group in the treatment group but compared with model group (P<0.05), treatment group, body weight, HOMA- beta is significantly higher than model group but lower than that of the control group (P<0.05);before the intervention, the model group and the serum ceramide, the rats in the treatment group chemerin was significantly higher than that of control group (P<0.05);intervention, serum ceramide, chemerin significantly higher than the control group the treatment group but lower than that of model group (P<0.05);before the intervention, the model group and treatment group rats, the SOD level of GSH-PX was significantly lower than that of the control group (P<0.05);intervention treatment group SOD and GSH-PX Significantly lower than the blank group, but higher than the model group (P<0.05). Conclusion: Western medicine can significantly improve the islet function of T2DM model rats, reduce serum ceramide and chemerin levels, and improve the antioxidant function of rats.

玉液汤加减联合二甲双胍和德谷门冬双胰岛素对2型糖尿病气阴两虚证患者临床疗效观察

目的:对玉液汤加减联合二甲双胍和德谷门冬双胰岛素对2型糖尿病(T2DM)气阴两虚证患者的临床疗效进行探讨。方法:将60例T2DM患者随机分为对照组(n=30)和观察组(n=30),对照组采用二甲双胍联合德谷门冬双胰岛素治疗,观察组在此基础上应用玉液汤加减治疗,比较2组治疗后的中医证候积分、糖化血红蛋白(Hb Alc)、空腹血糖(FPG)、餐后2 h血糖(2h PG)、日内平均血糖波动幅度(MAGE)、胰岛素抵抗指数(HOMA-IR)和胰岛素分泌指数(HOMA-IS)。结果:治疗后,观察组总有效率显著高于对照组(93.33%vs 86.67%);观察组中医证候积分、Hb Alc、FPG、2h PG、MAGE和HOMA-IR等指标均低于对照组,HOMA-IS高于对照组(均P<0.05)。结论:玉液汤加减联合二甲双胍和德谷门冬双胰岛素对2型糖尿病气阴两虚证患者疗效显著,可有效控制患者的血糖并改善胰岛功能。

达格列净联合阿托伐他汀治疗糖尿病肾病的效果及对患者胰岛功能和机体微炎症状态的影响

目的探究达格列净联合阿托伐他汀治疗糖尿病肾病(DN)的效果及对患者胰岛功能和机体微炎症状态的影响。方法选取2021年2月至2022年2月海南省海口市人民医院收治的DN患者116例,按随机数字表法分为对照组和观察组,各58例。对照组采用阿托伐他汀钙片治疗,观察组在对照组基础上联合达格列净片治疗,2组均治疗3个月。比较治疗总有效率,治疗前后肾功能、胰岛功能指标和炎症因子水平。结果观察组总有效率显著高于对照组[93.1%(54/58)比77.6%(45/58)],差异有统计学意义(χ^(2)=5.583,P=0.018)。治疗后2组血尿素氮、血肌酐、24 h尿蛋白定量均明显低于治疗前,且观察组均低于对照组,差异均有统计学意义(均P<0.001)。治疗后2组稳态模型胰岛素抵抗指数均显著低于治疗前且观察组低于对照组[(2.43±0.28)比(2.67±0.31)],稳态模型胰岛β细胞功能指数均显著高于治疗前且观察组高于对照组[(13.4±3.8)比(10.5±3.3)],差异均有统计学意义(均P<0.05)。治疗后2组白细胞介素6、肿瘤坏死因子α、高敏C反应蛋白水平均显著低于治疗前且观察组低于对照组,差异均有统计学意义(均P<0.05)。结论达格列净联合阿托伐他汀治疗DN临床效果较好,可以有效改善患者胰岛功能,减轻机体的微炎症状态。

2型糖尿病伴桥本甲状腺炎患者甲状腺抗体滴度与胰岛功能的相关性研究

目的 探究2型糖尿病(T2DM)伴甲状腺功能正常的桥本甲状腺炎(HT)患者的甲状腺特异性抗体滴度与胰岛功能的相关性。方法 选择2021年1月至2023年5月于安徽医科大学附属安庆市立医院内分泌科就诊的92例甲状腺功能正常的HT伴T2DM患者,根据C肽水平将其分为低C肽水平组(50例)和高C肽水平组(42例)。比较两组性别、年龄、糖尿病病程、糖化血红蛋白(Hb A1c)、体重指数(BMI)、甲状腺过氧化物酶抗体(TPOAb)、甲状腺球蛋白抗体(TGAb)、25羟维生素D[25(OH)D]等指标。采用二元logistic回归模型分析胰岛功能的独立危险因素。结果 两组TPOAb、TGAb、糖尿病病程、25(OH)D、Hb A1c、BMI比较,差异有统计学意义(P<0.05)。二元logistic回归分析结果显示,TPOAb(OR=1.005,95%CI:1.001~1.009)、TGAb(OR=1.007,95%CI:1.000~1.014)、糖尿病病程(OR=1.455,95%CI:1.118~1.895)、BMI(OR=0.693,95%CI:0.517~0.928)、25(OH)D(OR=0.848,95%CI:0.726~0.991)是胰岛功能的影响因素(P<0.05)。结论 在T2DM合并HT患者中,TPOAb、TGAb的滴度水平与胰岛功能损伤有关,甲状腺自身免疫性抗体滴度是胰岛功能衰竭的独立危险因素。

有氧运动联合抗阻运动对妊娠期糖尿病患者胰岛细胞功能及糖脂代谢的影响

目的:探究有氧运动联合抗阻运动对妊娠期糖尿病患者胰岛细胞功能及糖脂代谢的影响。方法:将2021年5月—2023年6月松滋市人民医院的100例妊娠期糖尿病患者依据随机数字表法分为对照组50例和观察组50例。对照组进行常规妊娠期糖尿病干预,观察组则在对照组的基础上加用有氧运动联合抗阻运动。比较两组的干预总有效率、干预前后的胰岛细胞功能[稳态模型评估胰岛素抵抗指数(HOMA-IR)及稳态模型评估β细胞功能指数(HOMA-β)]、糖代谢指标[空腹血糖(FPG)、餐后2 h血糖(2 h PG)及糖化血红蛋白(HbA1c)]及脂代谢指标[总胆固醇(TC)、三酰甘油(TG)及低密度脂蛋白胆固醇(LDL-C)]。结果:观察组的干预总有效率高于对照组(P<0.05)。干预前两组的胰岛细胞功能、糖代谢指标及脂代谢指标比较,差异均无统计学意义(P>0.05),干预4、8周后,两组的HOMA-β均高于干预前,且观察组均高于对照组,两组的HOMA-IR、糖代谢指标及脂代谢指标均低于干预前,且观察组均低于对照组(P<0.05)。结论:有氧运动联合抗阻运动在妊娠期糖尿病患者中的应用效果较好,且可显著改善患者的胰岛细胞功能及糖脂代谢状态。

卡格列净联合洛塞那肽对2型糖尿病胰岛素抵抗患者胰岛功能、YKL-40、PPARγ的影响

目的研究卡格列净联合洛塞那肽对2型糖尿病胰岛素抵抗患者疗效,及对胰岛功能、血清YKL-40、过氧化物酶体增殖物激活受体γ(PPARγ)的影响。方法选择2型糖尿病患者98例,随机均分为对照组(洛塞那肽治疗)和联合组(卡格列净联合洛塞那肽治疗),比较两组临床疗效、胰岛功能、血清YKL-40、PPARγ水平、血糖指标及不良反应发生率。结果联合组治疗总有效率高于对照组(P<0.05)。两组不良反应总发生率比较差异无显著性(P>0.05)。与治疗前比较,两组治疗后胰岛素曲线下面积、胰岛β细胞功能指数、PPARγ升高,胰岛素抵抗指数、YKL-40、空腹血糖、2 h餐后血糖、糖化血红蛋白、体质指数降低;且联合组变化更为显著(P<0.05)。结论卡格列净联合洛塞那肽治疗可有效提高2型糖尿病胰岛素抵抗患者胰岛功能,并显著改善YKL-40、PPARγ水平。