scholarly journals Morphological features of pancreatic endocrinicytes in rats with type 2 diabetes mellitus receiving the incretin mimetic therapy of different duration

Author(s):  
Т.П. Тучина ◽  
О.В. Рогоза ◽  
К.П. Скотникова ◽  
Д.А. Лебедев ◽  
Р.В. Грозов ◽  
...  

Группа препаратов, основанных на инкретиновых эффектах (аналоги глюкагоноподобного пептида-1 аГПП1) и ингибиторы дипептидилпептидазы-4, иДПП4), обладают способностью увеличивать репликацию β -клеток и ингибировать апоптоз. Инкретиномиметики способны влиять на функцию α-клеток, восстанавливая физиологическую регуляцию уровня глюкагона. При этом эффекты инкретиномиметиков на пролиферацию/апоптоз α-клеток изучены недостаточно. В единичных исследованиях отмечено увеличение пролиферации α-клеток, но факторы, определяющие выраженность этих изменений, не установлены. Цель - оценка влияния терапии инкретиномиметиками разной продолжительности на морфологические и функциональные особенности α- и β-клеток поджелудочной железы крыс (12 мес) с сахарным диабетом 2-го типа (СД 2-го типа). Методика. У крыс (возраст 12 мес), находящихся на высокожировой диете, моделировали стрептозотоцин-никотинамид-индуцированный СД 2-го типа. Животные получали инкретиномиметки: агонист рецепторов ГПП1 (лираглутид) или ингибитор ДПП4 (вилдаглиптин) в течение 4,10 и 24 нед. Макроскопически оценивали наличие/отсутствие видимых изменений поджелудочной железы. Парафиновые срезы поджелудочной железы окрашивали гематоксилином и эозином для оценки микроструктуры ткани. Проводили иммуногистохимическое (ИГХ) исследование с применением антител (Abcam) к глюкагону, инсулину в аппарате для ИГХ «Thermo Autostainer 720». После процедуры ИГХ ядра доокрашивали гематоксилином в аппарате для окраски гистологических микропрепаратов LeicaST5020. Результаты. Показано, что без лечения сахарный диабет приводил к снижению числа α- и β- клеток на всех сроках наблюдения. Лечение диабета лираглутидом и вилдаглиптином приводило к восстановлению пула как α-, так и β- клеток. При сравнении групп, получавших терапию и без терапии, с группой контроля значимые отличия сохранялись по количеству как α-, так и β-клеток во все сроки наблюдения. Через 4 нед в группах, получавших лираглутид, количество α-клеток стало сопоставимым с таковым в группе контроля, но количество β-клеток оставалось сниженным. После 10 и 24 нед терапии статистически значимой разницы между группой контроля и животными, получавшими терапию лиралутидом, по количеству как β-, так и α- клеток не выявлено. Заключение. Полученные данные свидетельствуют в пользу того, что терапия инкретиномиметиками способствует восстановлению пула как α-, так и β-клеток поджелудочной железы. Drugs based on incretin effects, including analogs of glucagon-like peptide-1 (GLP1) and dipeptidyl peptidase-4 inhibitors (DPP4), increase replication and inhibit apoptosis of β-cells. Incretin mimetics can influence the function of α-cells thereby restoring physiological regulation of glucagon. However, effects of incretin mimetics on proliferation and apoptosis of α-cells are understudied. A few studies reported increased α-cell proliferation, but the factors determining the degree of these changes were not established. Aim. To evaluate the effect of incretin mimetic treatment of different duration on morphological and functional features of pancreatic α- and β-cells of 12-month-old rats with type 2 diabetes mellitus. Method. Streptozotocin-nicotinamide-induced type 2 diabetes mellitus was modeled in 12-month-old rats receiving a high-fat diet. The rats were treated with incretin mimetics, a GLP-1 receptor antagonist (Liraglutide) or a DPP-4 inhibitor (Vildagliptin) for 4, 10 or 24 weeks. Paraffin sections of the pancreas were stained with hematoxylin-eosin to evaluate the tissue microstructure. An immunohistochemical (IHC) study was performed using glucagon and insulin antibodies (Abcam) with a Thermo Autostainer 720 IHC instrument. After the IHC procedure, nuclei were additionally stained with hematoxylin using a Leica ST5020 stainer for histological micropreparations. Results. Untreated diabetes mellitus resulted in decreased numbers of α- and β-cells at all timepoints of observation. The treatments with Liraglutide and Vildagliptin recovered the pools of α- and β-cells. Significant differences of both treated and untreated diabetic groups from the control group in the number of α- and β-cells remained at all timepoints of observation. In the Liraglutide group at 4 weeks, the number of α-cells became comparable with the control group, but the number of β-cells remained lower. At 10 and 24 weeks of treatment, statistically significant differences between the control group and the Liraglutide or Vildagliptin treatment groups in the number of α- and β-cells were not observed. Conclusion. The results of the study suggested that the incretin mimetic therapy provided recovery of both α and β-cell pools in the pancreas.

Author(s):  
Shah Namrata Vinubhai ◽  
Pardeep Agarwal ◽  
Bushra Fiza ◽  
Ramkishan Jat

Background: Serum ferritin is known as an index for body iron stores also as an inflammatory marker and it is influenced by several disease. We were looking for a correlation between HbA1c and S. Ferritin in type 2 DM. Methodology: The present study a total of 150 participants were enrolled of which 100 were confirmed cases of Type 2 Diabetes Mellitus and rest 50 age and sex matched healthy subjects constituted the control group. All were screened for HbA1c, Fasting blood sugar, Post prandial blood sugar and S.Ferritin. Results: A highly significant variation and positive correlation was observed with respect to S.Ferritin and HbA1c levels. Mean S.Ferritin was high in the subgroup with poor glycemic control. Conclusion: The fasting, post prandial sugar levels, HbA1c and S.Ferritin were significantly higher in the diabetic subjects. This study shows a positive correlation between HbA1c and S. Ferritin levels. So we can conclude that in diabetic patients S. Ferritin may serve as an independent marker of poor glycemic and metabolic control. Keywords: Serum ferritin, Type 2 Diabetes Mellitus, HbA1c.


2018 ◽  
Vol 4 (2) ◽  
pp. 58-62
Author(s):  
Roksana Yeasmin ◽  
MA Muttalib ◽  
Kazi Nazneen Sultana ◽  
Nizamul Hoque Bhuiyan ◽  
Md Jamil Hasan Karami ◽  
...  

Background: Type 2 diabetes mellitus is a chronic disease characterized by relative or absolute deficiency of insulin, resulting in glucose intolerance.Objectives: The present study was planned to see the associations of serum uric acid with positive Rheumatoid factor in type 2 male diabetes mellitus patients. Methodology: This case control study was carried out at the department of Biochemistry at Ibrahim Medical College, Dhaka, Bangladesh. The duration of the study was from June 2015 to June 2016 for a period of one year. In this present study, male patients with type 2 diabetes mellitus were taken as case group and age and sex matched healthy male were taken as control group. Rheumatoid factor was measured from the blood of all case and control group respondents. Others blood para meters were also measured for the correlation with the diabetes mellitus patients.Results: In this present study, 110 male patients presented with type 2 diabetes mellitus were recruited as case and age and sex matched healthy male were recruited as control. More rheumatoid factor positive in type 2 DM male patients with the uric acid range between 6.5 to 9.5 mg/dL. The number of patients was 5 out of total 9 rheumatoid factor positive cases. In this study serum uric acid was significantly correlated with rheumatoid factor in type 2 male diabetic patients. Rheumatoid factor positive cases were taking insulin among 9 and it was statistically significantly associated (p<0.001). Conclusion: In this study serum uric acid is significantly associated with positive rheumatoid factor in type 2 male diabetic patients.Journal of Current and Advance Medical Research 2017;4(2):58-62


2021 ◽  
Vol 22 (3) ◽  
pp. 1059
Author(s):  
Bodo C. Melnik

Epidemiological studies associate milk consumption with an increased risk of Parkinson’s disease (PD) and type 2 diabetes mellitus (T2D). PD is an α-synucleinopathy associated with mitochondrial dysfunction, oxidative stress, deficient lysosomal clearance of α-synuclein (α-syn) and aggregation of misfolded α-syn. In T2D, α-syn promotes co-aggregation with islet amyloid polypeptide in pancreatic β-cells. Prion-like vagal nerve-mediated propagation of exosomal α-syn from the gut to the brain and pancreatic islets apparently link both pathologies. Exosomes are critical transmitters of α-syn from cell to cell especially under conditions of compromised autophagy. This review provides translational evidence that milk exosomes (MEX) disturb α-syn homeostasis. MEX are taken up by intestinal epithelial cells and accumulate in the brain after oral administration to mice. The potential uptake of MEX miRNA-148a and miRNA-21 by enteroendocrine cells in the gut, dopaminergic neurons in substantia nigra and pancreatic β-cells may enhance miRNA-148a/DNMT1-dependent overexpression of α-syn and impair miRNA-148a/PPARGC1A- and miRNA-21/LAMP2A-dependent autophagy driving both diseases. MiRNA-148a- and galactose-induced mitochondrial oxidative stress activate c-Abl-mediated aggregation of α-syn which is exported by exosome release. Via the vagal nerve and/or systemic exosomes, toxic α-syn may spread to dopaminergic neurons and pancreatic β-cells linking the pathogenesis of PD and T2D.


2021 ◽  
Vol 40 (1) ◽  
Author(s):  
Freda Lalrohlui ◽  
Souvik Ghatak ◽  
John Zohmingthanga ◽  
Vanlal Hruaii ◽  
Nachimuthu Senthil Kumar

AbstractOver the last few decades, Mizoram has shown an increase in cases of type 2 diabetes mellitus; however, no in-depth scientific records are available to understand the occurrence of the disease. In this study, 500 patients and 500 healthy controls were recruited to understand the possible influence of their dietary and lifestyle habits in relation with type 2 diabetes mellitus. A multivariate analysis using Cox regression was carried out to find the influence of dietary and lifestyle factors, and an unpaired t test was performed to find the difference in the levels of biochemical tests. Out of 500 diabetic patients, 261 (52.3%) were males and 239 (47.7%) were females, and among the control group, 238 (47.7%) were males and 262 (52.3%) were females. Fermented pork fat, Sa-um (odds ratio (OR) 18.98), was observed to be a potential risk factor along with tuibur (OR 0.1243) for both males and females. Creatinine level was found to be differentially regulated between the male and female diabetic patients. This is the first report of fermented pork fat and tobacco (in a water form) to be the risk factors for diabetes. The unique traditional foods like Sa-um and local lifestyle habits like tuibur of the Mizo population may trigger the risk for the prevalence of the disease, and this may serve as a model to study other populations with similar traditional practices.


Author(s):  
Hadi Bazyar ◽  
Seyed Ahmad Hosseini ◽  
Sirous Saradar ◽  
Delsa Mombaini ◽  
Mohammad Allivand ◽  
...  

Abstract Background In patients with type 2 diabetes mellitus (T2DM) the inflammatory and metabolic responses to epigallocatechin-3-gallate (EGCG) are unknown. Objectives Evaluate the impacts of EGCG on metabolic factors and some biomarkers of stress oxidative in patients with T2DM. Methods In this randomized, double-blind, placebo-controlled trial, 50 patients with T2DM consumed either 2 tablets (300 mg) EGCG (n=25) or wheat flour as placebo (n=25) for 2 months. The total antioxidant capacity (TAC), interleukin-6 (IL-6), lipid profile, mean arterial pressure (MAP), atherogenic index of plasma (AIP) were evaluated before and after the intervention. Results The finding of present study exhibited a significant increase in the serum levels of TAC after the EGCG supplementation (p=0.001). Also, in compare with control group, the mean changes of TAC were significantly higher in supplement group (p=0.01). In intervention group, a significant decrease was observed in the mean levels of triglyceride, total cholesterol, diastolic blood pressure (DBP), AIP, and MAP (p<0.05). Taking EGCG resulted in the mean changes of total cholesterol, MAP and DBP were significantly lower in compare with control group (p<0.05). Conclusions This study recommended that EGCG supplementation may be improved blood pressure, lipid profile, AIP, and oxidative status in patients with T2DM.


2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Anja Wollny ◽  
Christin Löffler ◽  
Eva Drewelow ◽  
Attila Altiner ◽  
Christian Helbig ◽  
...  

Abstract Background We investigate whether an educational intervention of GPs increases patient-centeredness and perceived shared decision making in the treatment of patients with poorly controlled type 2 diabetes mellitus? Methods We performed a cluster-randomized controlled trial in German primary care. Patients with type 2 diabetes mellitus defined as HbA1c levels ≥ 8.0% (64 mmol/mol) at the time of recruitment (n = 833) from general practitioners (n = 108) were included. Outcome measures included subjective shared decision making (SDM-Q-9; scale from 0 to 45 (high)) and patient-centeredness (PACIC-D; scale from 1 to 5 (high)) as secondary outcomes. Data collection was performed before intervention (baseline, T0), at 6 months (T1), at 12 months (T2), at 18 months (T3), and at 24 months (T4) after baseline. Results Subjective shared decision making decreased in both groups during the course of the study (intervention group: -3.17 between T0 and T4 (95% CI: -4.66, -1.69; p < 0.0001) control group: -2.80 (95% CI: -4.30, -1.30; p = 0.0003)). There were no significant differences between the two groups (-0.37; 95% CI: -2.20, 1.45; p = 0.6847). The intervention's impact on patient-centeredness was minor. Values increased in both groups, but the increase was not statistically significant, nor was the difference between the groups. Conclusions The intervention did not increase patient perceived subjective shared decision making and patient-centeredness in the intervention group as compared to the control group. Effects in both groups might be partially attributed to the Hawthorne-effect. Future trials should focus on patient-based intervention elements to investigate effects on shared decision making and patient-centeredness. Trial registration The trial was registered on March 10th, 2011 at ISRCTN registry under the reference ISRCTN70713571.


2017 ◽  
Vol 125 (09) ◽  
pp. 598-602 ◽  
Author(s):  
Zihang Wang ◽  
Yuhong Zhang ◽  
Weiwei Liu ◽  
Benli Su

AbstractThe present study aimed to evaluate the diagnostic value of echocardiography in measuring the thickness of epicardial adipose tissue (EAT) of the patients of type 2 diabetes mellitus (T2DM) and its correlation with the intimal-medial thickness of the carotid artery (cIMT) to investigate the relationship between EAT and cIMT. 68 patients of T2DM were enrolled and were divided into 2 groups: group of T2DM with duration≤10 years (35 cases) and group of T2DM with duration>10 years (33 cases). And 30 healthy subjects were enrolled as the control group. The thickness of EAT and cIMT were measured by echocardiography and high-frequency ultrasonography. The thickness of EAT and IMT of the carotid artery of 2 type 2 diabetic groups (duration≤10 years and>10 years) were significantly higher than that of the control group (all p<0.05), and the thickness of EAT and cIMT of the group of T2DM with duration>10 years were significantly higher than that of the group of T2DM with duration≤10 years (p<0.05). In univariate analysis, the thickness of EAT was positively and significantly associated with age (r=0.412, p<0.05), BMI (r=0.566, p<0.05), waist circumference (r=0.475, p<0.05), LDL (r=0.425, p<0.05), TG (r=0.496, p<0.05), duration of diabetes (r=0.384, p<0.05) and cIMT (r=0.456, p<0.05). In multiple stepwise regression analyses, age, BMI and IMT of carotid artery were appeared to be significantly associated with EAT (p<0.05 for all). In conclusion, routine screening of EAT and cIMT by ultrasonography in type 2 diabetic patients helps us to predict cardiovascular risks and prevent further development of cardiovascular complications.


Author(s):  
Alaa M. Hammad ◽  
Waleed Qirim ◽  
Ameen Alassi ◽  
Dana Hyassat

Background: Type 2 diabetes mellitus (T2DM) is a chronic condition with an impairing effect on multiple organs. Numerous respiratory disorders have been observed in patients with T2DM. However, T2DM e ect on pulmonary function is ff inconclusive. Aims: In this study, we investigated the effect of T2DM on respiratory function and the correlation of glycemic control, diabetes duration and insulin intake. Methods: 1500 patients were recruited for this study, 560 having T2DM for at least a year were included in the final data, in addition to 540 healthy volunteers. Forced expiratory volume in one second (FEV1), forced vital capacity (FVC), forced expiratory flow at 25-75% (FEF 25-75%), as well as FEV1/FVC ratio values were measured. Results: A two-sample t-test showed that z-scores produced by Al-Qerem et al.’s equations for FEV1, FVC, and FEF 25-75% were significantly lower for the T2DM group than the control group (p < 0.01). FEV1/FVC ratio in T2DM group were significantly higher (p < 0.01). Multiple linear regression analysis found that glycemic control represented by HbA1c as well as disease duration were negatively associated with pulmonary function (p < 0.01). However, insulin intake was found to have no significant correlation with the pulmonary function. Conclusion: T2DM was linked to reduced pulmonary function and was consistent with a restrictive ventilation pattern. HbA1c as well as disease duration were independent risk factors for reduced pulmonary function.


2011 ◽  
Vol 55 (9) ◽  
pp. 686-691 ◽  
Author(s):  
Anna Paula de Sá Borges ◽  
Camilo Molino Guidoni ◽  
Osvaldo de Freitas ◽  
Leonardo Régis Leira Pereira

OBJECTIVE: To analyze the costs related to visits and drug prescription in outpatients with type 2 diabetes mellitus assisted by a pharmaceutical care service. SUBJECTS AND METHODS: A prospective and experimental study was carried out. Seventy one patients were divided into two groups: control and pharmaceutical care. Patients in the pharmaceutical care group were followed up monthly by a single clinical pharmacist. RESULTS: The pharmaceutical care group had a statistically significant reduction in costs of metformin and emergency department visits, and increased costs with their family physicians. On the other hand, the control group had a statistically significant increase of 21.3% in the general costs of treatment and visits. CONCLUSION: The pharmaceutical care group maintained the same costs related to drugs and visits, while the control group showed a significant increase in general costs.


2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Young-Gyun Seo ◽  
Ho-Chun Choi ◽  
Ah Reum An ◽  
Do Joon Park ◽  
Young Joo Park ◽  
...  

Aim. The incidence of thyroid cancer is increasing worldwide. The prevalence of type 2 diabetes mellitus (T2DM) is also increasing. Therefore, we aimed to analyze the effect of T2DM on thyroid cancer. Methods. A case-control study was performed. A total of 415 healthy controls with thyroid ultrasound screening and physician consultation were selected from the Thyroid Cancer Longitudinal Study (T-CALOS). Among patients with thyroid cancer who were enrolled in T-CALOS, 415 patients were matched to the control group according to age and sex. We assessed the effects of T2DM, T2DM duration, and T2DM medication on thyroid cancer. Results. Women with T2DM had lower odds of thyroid cancer than women without T2DM (odds ratio [OR]: 0.40, 95% confidence interval [CI]: 0.20–0.81). Individuals receiving T2DM medication had higher odds of thyroid cancer compared to those without T2DM medication (OR: 5.21, 95% CI: 1.58–17.15). Individuals with T2DM duration <6 years had lower odds of thyroid cancer compared to those without T2DM (OR: 0.58, 95% CI: 0.34–0.97). Conclusions. Individuals with early T2DM are presumed to have a low incidence of thyroid cancer, and this effect seems to last up to 6 years after diagnosis of T2DM.


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