jdm

Journal of Diabetes & Metabolism

ISSN - 2155-6156

Case Report - (2023) Volume 14, Issue 3

Expert clinical opinion on assessing and protecting pancreatic islet cell function in type 2 diabetes mellitus

Yon Mu*
 
*Correspondence: Yon Mu, Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China, Email:

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Abstract

Island β- cell dysfunction is a introductory pathophysiological specific of type 2 diabetes mellitus (T2DM). Applicable assessment of islet β- cell function is salutary to further operation of T2DM. guarding islet β- cell function is vital to delay the progress of type 2 diabetes mellitus. therefore, the Pancreatic Island β- cell Expert Panel of the Chinese Diabetes Society and Endocrinology Society of Jiangsu Medical Association organized experts to draft the “ Clinical expert agreement on the assessment and protection of pancreatic islet β- cell function in type 2 diabetes mellitus. ” This agreement suggests that β- cell function can be clinically assessed using blood glucose- predicated styles or styles that combine blood glucose and endogenous insulin or C- peptide situations [1]. Some measures, including weight loss and early and sustained euglycemia control, could effectively cover islet β- cell function, and some lately developed drugs, analogous as Sodium- glucose cotransporter- 2 asset and Glucagon- suchlike peptide- 1 receptor agonists, could meliorate islet β- cell function, independent of glycemic control [2]. The frequency of adult diabetes mellitus in China has increased to11.2, and further than 90 of the cases is type 2 diabetes mellitus (T2DM) (1). Although the precise medium of T2DM development has not been fully clarified, pancreatic islet β- cell dysfunction and insulin resistance are considered two major factors in the pathogenesis of T2DM. Island β- cell function in T2DM cases decreases at an average rate of 2 yearly and extensively declines in cases with a complaint duration of further than 10 times (2). An extensive amount of time is desisted from the full compensation of islet β- cells for glycemia control to complete decompensation, and this period may allow croakers to adopt useful measures to cover islet β- cell function. therefore, rightly assessing islet β- cell function and developing an optimal treatment authority beforehand should contribute to better delaying the progression of T2DM [3].

Keywords

Islets; β-cell; Functional assessment; Weight loss; Intensive insulin therapy; Expert consensus

Introduction

Insulin resistance (IR) is current worldwide, being in roughly65.9 of individualities with impaired glucose forbearance (IGT) and 25 ofnon- fat subjects with normal glucose forbearance (NGT) [4]. In the early stage of such a complaint, pancreatic beta cells retain the insulin- concealing capability and advanced- than-normal attention of insulin are reached to maintain euglycemia or mild hyperglycemia. Along with diabetes progress, beta cells are severely damaged and fail to meet the demand, leading to relative insulin insufficiency and severe elevation of blood glucose [5]. In clinical practice, we tend to concentrate on lowering blood glucose values by impertinent use of secretagogues and insulin, which may increase the effect of endogenous or exogenous hyperinsulinemia. Recent studies have shown that IR is an indicator of poor survival. Data from the Helsinki Policemen Study demonstrated that hyperinsulinemia, defined as the topmost AUC insulin quintile during oral glucose forbearance test (OGTT), was responsible fora1.37-fold increase in all- cause mortality anda1.39-fold increase in the trouble of cardiovascular mortality after conforming for the area under the wind (AUC) glucose [6]. Also, Welborn et al. displayed increased cardiovascular mortality in Busselton with hyperglycemia (one- hour blood glucose attention), and the significance remained after position by one- hour serum insulin attention [7]. Again, similar studies concentrated on populations with a lower trouble of CVD death, analogous as Asian populations, have also been scarce. Also we present ourpost- hoc analysis among the population without diabetes of the follow-up study of Da Qing Diabetes and IGT Study over the last 30 times, to explore whether hyperinsulinemia is as important as hyperglycaemia in predicting death. Consequently, in clinical practice, the restriction of both serum insulin and glucose situations should be considered a necessary part of designing diabetes treatment strategies to reduce CVD and each- beget death trouble [8-10].

Materials and Methods

Study design and participants

Details of the studys design, styles, and cohort characteristics have been reported previously. curtly,, 660 actors inked from Daqing, China, were conducted diabetes netting in 1986. Glycemic status was classified predicated on OGTT using 1985 World Health Organization (WHO) criteria [11]. 576 had IGT, and a sample of 519 persons with normal glucose forbearance, agecommerce matched with the IGT group, was named for comparison as the NGT group. Active life intervention took place in the IGT group over 6 times after which actors entered medical care from their usual providers. In 2016, we determined mortality and causes of death among those original actors. In the present study, only people with full data on 2- h tube glucose (2hPG) and insulin storing at birth were enrolled in the analysis. Ultimately, a total of 462 individualities were involved, including 180 with normal glucose forbearance (NGT) and 282 with impaired glucose forbearance (IGT) [12-14].

Data collection

Data were collected by particular interview, clinical examination, and medical record review by trained staff for living actors. For the departed, data were collected by deputy questionnaires, medical records, and death instruments. Those unfit to attend the sanitorium because of ill- health or living outside of Da Qing municipality were examined at home, canvassed by telephone, and examined in original hospitals. Causes of death were determined by two trained croakers who were masked to actors ’ birth glucose or insulin status. dissensions between the croakers were appertained to an independent croaker for arbitration. Cardiovascular (CVD) death was defined as death due to myocardial infarction, unlooked-for death, heart failure, or stroke. Institutional review boards at the Chinese Center for Disease Control and Prevention and Fuwai Hospital approved the study. All study actors, or delegates who served as betrayers for the departed, handed written informed concurrence. The areas under the wind (AUC) for birth insulin were calculated using the trapezoidal rule insulin AUC = fasting insulin (mU/ L)/ 2 insulin 1 h (mU/ L) insulin 2 h (mU/ L)/ 2. To divide the subjects into equally sized groups, all subjects were classified into a high or a low insulin AUC group by the median AUC value.

The 2 groups were further subdivided as either above or under the median position of 2hPG attention. Accordingly, the following 4 experimental groups were created low insulin low glucose, high insulin low glucose, low insulin high glucose, and high insulin high glucose groups, successively labeled as G1, G2, G3, and G4 groups [15].

Results

The birth demographic and metabolic characteristics of actors were presented in Table 1. Of the included actors,47.8 were women,52.2 were men, and the mean age was43.8 times. The progression rates from G1, G2, G3, and G4 groups to diabetes were, and85.09, singly. There was no statistical difference between groups in age, gender, smoking status, or TC. As for G2 and G3 groups, the former was featured with hyperinsulinemia, whereas the ultimate was featured with hyperglycemia. The glucose position was as low as4.76 and6.56 mmol/ L in G1 and G2 and as high as9.01 and9.33 mmol/ L in G3 and G4, while the insulin AUC was as low as95.84 and109.32 mU/ L in G1 and G3 and as high as231.57 and257.22 mU/ L in G2 and G4. Other metabolic lives also showed significant differences in BMI and blood pressure.

Discussion

Our study included a population (NGT and IGT) and followed over 30 times to probe the long- term issues. After multivariable cox analysis conforming for age, coitus, smoking, and TC, compared to the low insulin low glucose group, the threat in the high insulin high glucose group increased1.32-fold in all- cause mortality and1.68-fold in CVD mortality over the 30- time follow- up. These results showed that the concurrence of hyperglycemia and hyperinsulinemia increased the threat of death [16]. Interestingly, actors with normal 2- hour tube glucose and advanced insulin position and those with advanced 2- hour tube glucose and normal insulin position had also elevated pitfalls for allcause and CVD death, indicating that either insulin or glucose contributed to death to the same extent singly. thus, attention should be paid not only to lowering glucose situations, but also to insulinemia contemporaneously, which may be an effective strategy for treating and precluding diabetes, and thus, long- term issues [17]. The notion that IR is associated with a cluster of abnormalities that increase CVD threat was introduced in 1988 and entered sustained attention. It's well- known that IR, featured as hyperinsulinemia and nearly related to glucose status, generally presents in the early stage of type 2 diabetes and prediabetes, indeed in normal glucose forbearance, and runs through the entire course of diabetes. Along with diabetes progress, there's a decline in island β- cell function and, thus, the serum insulin position. Substantial experimental substantiation has shown that, in individualities without diabetes, elevated insulin and glucose attention contribute to cardiovascular complaint contemporaneously or independently [18]. In the analysis by Ausk et al, after adaptation for implicit confounders, threat increased by 16 for all- cause death and 21 for CVD death across consecutive quartiles of Homeostasis Model Assessment of Insulin Resistance (HOMAIR) in grown-ups without diabetes. In addition, with a standard follow- up of8.8 times, the DECODE (Diabetes Epidemiology Collaborative Analysis of Diagnostic Criteria in Europe) Study Group indicated that 2hPG position was a stronger predictor of mortality from all- cause (about1.7-fold) and CVD (about1.4-fold) than dieting tube glucose position. Still, not all studies verified this association [19].

Summary and Prospects

The onset and progression of T2DM are nearly related to islet β- cell dysfunction, and accurate assessment of islet β- cell function contributes to the codifying opinion of diabetes mellitus and development of individualized treatment rules. Although multitudinous styles can be used to assess islet β- cell function, each system has its own graces and downsides, and a single system can't be a “ one size fits all ” approach for different populations. thus, these styles can be used alone or in combination depending on the purpose of β- cell function assessment and the subject's glucose forbearance stage. Antidiabetic rules and some attendant drugs have different goods on islet β- cell function. Beforehand ferocious insulin remedy and metabolic surgery substantially bettered islet β- cell function in lately diagnosed T2DM cases and fat individualities with T2DM, singly; still, it's still delicate to completely reverse T2DM, and the salutary goods on islet β- cell function gradually evaporate after treatment retirement. In the future, it will be necessary to establish a standardized assessment system for islet β- cell function and clarify the places of combined genes and signaling pathways in islet β- cell dysfunction. Precise intervention measures should be executed for minimum restoration of islet functional β- cells by stimulating endogenous β- cell regeneration.

Acknowledgement

None

Conflict of Interest

None

References

  1. Bonora E, Kiechl S, Willeit J, Oberhollenzer F, Egger G. Prevalence of insulin resistance in metabolic disorders: the Bruneck Study. Diabetes. 1998; 47: 1643-1649.
  2. Indexed at, Google Scholar, Crossref

  3. Reaven GM. Role of insulin resistance in human disease. Diabetes. 1988; 37: 1595-1607.
  4. Indexed at, Google Scholar, Crossref

  5. Abdul-Ghani MA, DeFronzo RA. Pathophysiology of prediabetes. Curr Diab Rep. 2009; 9: 193-199.
  6. Indexed at, Google Scholar, Crossref

  7. Ausk KJ, Boyko EJ, Ioannou GN. Insulin resistance predicts mortality in nondiabetic individuals in the U.S. Diabetes care. 2010; 33:1179-1185.
  8. Indexed at, Google Scholar, Crossref

  9. Hedblad B, Nilsson P, Engström G, Berglund G, Janzon L. Insulin resistance in non-diabetic subjects is associated with increased incidence of myocardial infarction and death. Diabetic Med: J Brit Diabetic Assoc. 2002; 19: 470-475.
  10. Indexed at, Google Scholar, Crossref

  11. Pyörälä M, Miettinen H, Laakso M, Pyörälä K. Plasma insulin and all-cause, cardiovascular, and noncardiovascular mortality: the 22-year follow-up results of the Helsinki Policemen Study. Diabetes Care. 2000; 23: 1097-1102.
  12. Indexed at, Google Scholar, Crossref

  13. Welborn TA, Wearne K. Coronary heart disease incidence and cardiovascular mortality in Busselton with reference to glucose and insulin concentrations. Diabetes Care. 1979; 2: 154-160.
  14. Indexed at, Google Scholar, Crossref

  15. Pan XR, Li GW, Hu YH, Wang JX, Yang WY. Effects of diet and exercise in preventing NIDDM in people with impaired glucose tolerance. The Da Qing IGT and Diabetes Study. Diabetes Care. 1997; 20: 537-544.
  16. Indexed at, Google Scholar, Crossref

  17. Gong Q, Zhang P, Wang J, Ma J, An Y. Morbidity and mortality after lifestyle intervention for people with impaired glucose tolerance: 30-year results of the Da Qing Diabetes Prevention Outcome Study. Lancet Diabetes Endocrinol. 2019; 7: 452-461.
  18. Indexed at, Google Scholar, Crossref

  19. Lempiäinen P, Mykkänen L, Pyörälä K, Laakso M, Kuusisto J. Insulin resistance syndrome predicts coronary heart disease events in elderly nondiabetic men. Circulation. 1999; 100: 123-128.
  20. Indexed at, Google Scholar, Crossref

  21. Ferrara A, Barrett-Connor EL, Edelstein SL. Hyperinsulinemia does not increase the risk of fatal cardiovascular disease in elderly men or women without diabetes: the Rancho Bernardo Study, 1984-1991. Am J Epidemiol. 1994; 140: 857-869.
  22. Indexed at, Google Scholar, Crossref

  23. Barr EL, Cameron AJ, Balkau B, Zimmet PZ, Welborn TA. HOMA insulin sensitivity index and the risk of all-cause mortality and cardiovascular disease events in the general population: the Australian Diabetes, Obesity and Lifestyle Study (AusDiab) study. Diabetologia. 2010; 53: 79-88.
  24. Indexed at, Google Scholar, Crossref

  25. Welsh P, Preiss D, Lloyd SM, de Craen AJ, Jukema JW. Contrasting associations of insulin resistance with diabetes, cardiovascular disease and all-cause mortality in the elderly: PROSPER long-term follow-up. Diabetologia. 2014; 57: 2513-2520.
  26. Indexed at, Google Scholar, Crossref

  27. Meyer ML, Gotman NM, Soliman EZ, Whitsel EA, Arens R. Association of glucose homeostasis measures with heart rate variability among Hispanic/Latino adults without diabetes: the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). Cardiovasc Diabetol. 2016; 15: 45
  28. Indexed at, Google Scholar, Crossref

  29. Othman EM, Leyh A, Stopper H. Insulin mediated DNA damage in mammalian colon cells and human lymphocytes in vitro. Mutat Res. 2013; 745-746: 34-39.
  30. Indexed at, Google Scholar, Crossref

  31. Gamble JM, Simpson SH, Eurich DT, Majumdar SR, Johnson JA. Insulin use and increased risk of mortality in type 2 diabetes: a cohort study. Diabetes Obes Metab. 2010; 12: 47-53.
  32. Indexed at, Google Scholar, Crossref

  33. Holden SE, Jenkins-Jones S, Morgan CL, Schernthaner G, Currie CJ. Glucose-lowering with exogenous insulin monotherapy in type 2 diabetes: dose association with all-cause mortality, cardiovascular events and cancer. Diabetes Obes Metab. 2015; 17: 350-362.
  34. Indexed at, Google Scholar, Crossref

  35. Nyström T, Bodegard J, Nathanson D, Thuresson M, Norhammar A. Second line initiation of insulin compared with DPP-4 inhibitors after metformin monotherapy is associated with increased risk of all-cause mortality, cardiovascular events, and severe hypoglycaemia. Diabetes Res Clin Pract. 2017; 123: 199-208.
  36. Indexed at, Google Scholar, Crossref

  37. Mogensen UM, Andersson C, Fosbøl EL, Schramm TK, Vaag A. Sulfonylurea in combination with insulin is associated with increased mortality compared with a combination of insulin and metformin in a retrospective Danish nationwide study. Diabetologia. 2015; 58: 50-58.
  38. Indexed at, Google Scholar, Crossref

Author Info

Yon Mu*
 
Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
 

Citation: Mu Y. Expert Clinical Opinion on Assessing and Protecting Pancreatic Islet Cell Function in Type 2 Diabetes Mellitus. J Diabetes Metab, 2023, 14(2): 981.

Received: 01-Mar-2023, Manuscript No. jdm-23-22160; Editor assigned: 04-Mar-2023, Pre QC No. jdm-23-22160(PQ); Reviewed: 18-Mar-2023, QC No. jdm-23-22160; Revised: 25-Mar-2023, Manuscript No. jdm-23-22160(R); Published: 31-Mar-2023, DOI: 10.35248/2155-6156.1000986

Copyright: © 2023 Mu Y. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.