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Quaye E, Chacko S, Chung ST, Brychta RJ, Chen KY, Brown RJ. Energy expenditure due to gluconeogenesis in pathological conditions of insulin resistance. Am J Physiol Endocrinol Metab 2021; 321:E795-E801. [PMID: 34693755 PMCID: PMC8714967 DOI: 10.1152/ajpendo.00281.2021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Gluconeogenesis (GNG), the formation of glucose from noncarbohydrate precursors, requires adenosine triphosphate (ATP). Previous studies have estimated the energetic cost of GNG in humans based on theoretical calculations of rates of GNG, moles of oxygen consumption by GNG, and average oxygen consumption. Few human studies have measured the energy expenditure (EE) due to GNG. We estimated EE attributable to GNG in patients with three insulin resistance conditions and high GNG rates (insulin receptor pathogenic variants, lipodystrophy, and type 2 diabetes) and obesity without diabetes. Fractional GNG was measured by incorporation of deuterium from body water into newly formed glucose, endogenous glucose production (EGP) as glucose appearance following administration of [6,6-2H2]glucose, and total GNG as fractional GNG × EGP. EE was measured by indirect calorimetry and compared with predicted EE from the Mifflin St. Jeor equation. EE attributable to GNG was estimated using linear regression after accounting for age and fat-free mass (FFM). EE in patients with insulin resistance was significantly higher than predicted by the Mifflin St. Jeor equation. GNG correlated with resting EE (REE). EE attributable to GNG in patients with insulin resistance was almost one-third of REE, substantially higher than theorized in healthy subjects. Our findings demonstrate that GNG is a significant contributor to EE in insulin-resistant states. Prediction equations may underestimate caloric needs in patients with insulin resistance. Therefore, targeting caloric needs to account for higher EE due to increased GNG should be considered in energy balance studies in patients with insulin resistance.NEW & NOTEWORTHY Gluconeogenesis is an energy-requiring process that is upregulated in diabetes, contributing to hyperglycemia. Previous studies have estimated that gluconeogenesis accounts for less than 10% of resting energy expenditure. This study estimates the energy expenditure attributable to gluconeogenesis in uncommon and severe forms of insulin resistance and common, milder forms of insulin resistance. In these populations, gluconeogenesis accounts for almost one-third of resting energy expenditure, substantially higher than previously theorized in the literature.
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Affiliation(s)
- Emmanuel Quaye
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Shaji Chacko
- US Department of Agriculture/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas
| | - Stephanie T Chung
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Robert J Brychta
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Kong Y Chen
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Rebecca J Brown
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
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Zhang R, Zhou X, Sheng Q, Zhang Q, Xie T, Xu C, Zou Z, Dong J, Liao L. Gliquidone ameliorates hepatic insulin resistance in streptozotocin-induced diabetic Sur1 -/- rats. Eur J Pharmacol 2021; 906:174221. [PMID: 34081903 DOI: 10.1016/j.ejphar.2021.174221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 05/25/2021] [Accepted: 05/28/2021] [Indexed: 11/17/2022]
Abstract
Gliquidone was suggested to exert hypoglycemic effect through enhancing hepatic insulin sensitivity. However, inadequate in vivo evidences make this statement controversial. The aim of the present study was to clarify the insulin-sensitizer role of gliquidone in liver and muscle, so as to confirm its extra-pancreatic effects in vivo. TALEN technique was used to create Sur1 knockout (Sur1-/-) rats. Diabetic Sur1-/- rat models were established by high-fat diet combined with streptozotocin, and which were randomly divided into three groups: gliquidone, metformin and saline, treated for 8 weeks. Fasting blood glucose (FBG) and body mass were tested each week. IPGTT, IPITT and hyperinsulinemic-euglycemic clamp tests were used to evaluate glucose tolerance and insulin sensitivity, respectively. Key mediators of glucose metabolism in liver and skeletal muscle and the activity of AKT and AMPK in these tissues were further analyzed. We found that gliquidone decreased FBG and increased insulin sensitivity without increasing insulin secretion in diabetic Sur1-/- rats. Further exploration implied that gliquidone mainly increased hepatic glycogen storage and decreased gluconeogenesis, which were accompanied with activation of AKT, but not enhanced muscle GLUT4 expression. However, both these effects were still weaker than that of metformin. These results suggested that gliquidone could exerts an extra-pancreatic hypoglycemic effect by improving insulin sensitivity, which might be largely attributes to its additional insulin sensitizer role in hepatic glucose metabolism.
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Affiliation(s)
- Rui Zhang
- Division of Endocrinology, Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Xiaojun Zhou
- Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Institute of Nephrology, Laboratory of Endocrinology, Jinan, 250014, China; Division of Endocrinology, Department of Internal Medicine, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250014, China
| | - Qiqi Sheng
- Division of Endocrinology, Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Qian Zhang
- Department of Pharmacology, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, China
| | - Tianyue Xie
- Division of Endocrinology, Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Chunmei Xu
- Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Institute of Nephrology, Laboratory of Endocrinology, Jinan, 250014, China; Division of Endocrinology, Department of Internal Medicine, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250014, China
| | - Zhiwei Zou
- Division of Endocrinology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264117, China
| | - Jianjun Dong
- Division of Endocrinology, Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Lin Liao
- Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Institute of Nephrology, Laboratory of Endocrinology, Jinan, 250014, China; Division of Endocrinology, Department of Internal Medicine, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250014, China.
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Kalra S, Bahendeka S, Sahay R, Ghosh S, Md F, Orabi A, Ramaiya K, Al Shammari S, Shrestha D, Shaikh K, Abhayaratna S, Shrestha PK, Mahalingam A, Askheta M, A. Rahim AA, Eliana F, Shrestha HK, Chaudhary S, Ngugi N, Mbanya JC, Aye TT, Latt TS, Akanov ZA, Syed AR, Tandon N, Unnikrishnan AG, Madhu SV, Jawa A, Chowdhury S, Bajaj S, Das AK. Consensus Recommendations on Sulfonylurea and Sulfonylurea Combinations in the Management of Type 2 Diabetes Mellitus - International Task Force. Indian J Endocrinol Metab 2018; 22:132-157. [PMID: 29535952 PMCID: PMC5838894 DOI: 10.4103/ijem.ijem_556_17] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
For decades, sulfonylureas (SUs) have been important drugs in the antidiabetic therapeutic armamentarium. They have been used as monotherapy as well as combination therapy. Focus on newer drugs and concerns about the risk of severe hypoglycemia and weight gain with some SUs have led to discussion on their safety and utility. It has to be borne in mind that the adverse events associated with SUs should not be ascribed to the whole class, as many modern SUs, such as glimepiride and gliclazide modified release, are associated with better safety profiles. Furthermore, individualization of treatment, using SUs in combination with other drugs, backed with careful monitoring and patient education, ensures maximum benefits with minimal side effects. The current guidelines, developed by experts from Africa, Asia, and the Middle East, promote the safe and smart use of SUs in combination with other glucose-lowering drugs.
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Affiliation(s)
- Sanjay Kalra
- Department of Endocrinology, Bharti Hospital, Karnal, Haryana, India
| | - Silver Bahendeka
- Department of Internal Medicine, Diabetes & Endocrinology, St. Francis Hospital, Nsambya, Kampala, Uganda
| | - Rakesh Sahay
- Department of Endocrinology, Osmania Medical College, Hyderabad, Telangana, India
| | - Sujoy Ghosh
- Department of Endocrinology, IPGMER and SSKM Hospital, Kolkata, West Bengal, India
| | - Fariduddin Md
- Department of Endocrinology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Abbas Orabi
- Department of Internal Medicine, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Kaushik Ramaiya
- Department of Internal Medicine, Hindu Mandal Hospital, Dar es Salaam, Tanzania
| | | | - Dina Shrestha
- Department of Endocrinology, Norvic International Hospital and Medical College, and Hospital for Advanced Medicine and Surgery, Maharajganj, Kathmandu, Nepal
| | - Khalid Shaikh
- Department of Diabetes, Faculty of Internal Medicine, Royal Oman Police Hospital, Muscat, Oman
| | - Sachitha Abhayaratna
- Department of Pharmacology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Pradeep K. Shrestha
- Department of Medicine, Tribhuvan University Teaching Hospital, Maharajganj, Kathmandu, Nepal
| | | | | | - Aly Ahmed A. Rahim
- Department of Internal Medicine, Diabetes & Metabolism Unit, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Fatimah Eliana
- Department of Internal Medicine, Faculty of Medicine, YARSI University, Jakarta, Indonesia
| | - Hari K. Shrestha
- Department of Internal Medicine, Kathmandu University Hospital, Dhulikhel, Nepal
| | | | - Nancy Ngugi
- Department of Endocrinology, Kenyatta National Hospital, Nairobi, Kenya
| | - Jean Claude Mbanya
- Department of Internal Medicine and Specialties, Faculty of Medicine and Biomedical Sciences, University of Yaoundé, Yaounde, Cameroon
| | - Than Than Aye
- Department of Endocrinology, University of Medicine 2, Yangon, Myanmar
| | - Tint Swe Latt
- Department of Medicine, University of Medicine 2, Yangon, Myanmar
| | - Zhanay A. Akanov
- Center of Diabetes, Clinic of Internal Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Republic of Kazakhstan
| | - Abbas Raza Syed
- Department of Endocrinology, Shaukat Khanum Hospital and Research Center, Lahore, Pakistan
| | - Nikhil Tandon
- Department of Endocrinology, Metabolism and Diabetes, All India Institute of Medical Sciences, Pune, Maharashtra, India
| | - A. G. Unnikrishnan
- Department of Endocrinology and Diabetes, Chellaram Diabetes Institute, Pune, Maharashtra, India
| | - S. V. Madhu
- Department of Medicine, University of Delhi, New Delhi, India
| | - Ali Jawa
- Department of Endocrinology, Diabetes and Metabolism, Wilshire Cardiovascular and Endocrine Center of Excellence, Lahore, Pakistan
| | - Subhankar Chowdhury
- Department of Endocrinology, IPGMER and SSKM Hospital, Kolkata, West Bengal, India
| | - Sarita Bajaj
- Department of Medicine, MLN Medical College, Allahabad, Uttar Pradesh, India
| | - Ashok Kumar Das
- Department of General Medicine, Pondicherry Institute of Medical Sciences, Puducherry, India
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Gupta P, Bala M, Gupta S, Dua A, Dabur R, Injeti E, Mittal A. Efficacy and risk profile of anti-diabetic therapies: Conventional vs traditional drugs—A mechanistic revisit to understand their mode of action. Pharmacol Res 2016; 113:636-674. [DOI: 10.1016/j.phrs.2016.09.029] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 09/23/2016] [Accepted: 09/23/2016] [Indexed: 12/17/2022]
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Wathes DC, Cheng Z, Fenwick MA, Fitzpatrick R, Patton J. Influence of energy balance on the somatotrophic axis and matrix metalloproteinase expression in the endometrium of the postpartum dairy cow. Reproduction 2011; 141:269-81. [PMID: 21123519 PMCID: PMC3021913 DOI: 10.1530/rep-10-0177] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 11/01/2010] [Accepted: 11/26/2010] [Indexed: 12/26/2022]
Abstract
Postpartum dairy cows enter a period of negative energy balance (NEB) associated with low circulating IGF1, during which the uterus must undergo extensive repair following calving. This study investigated the effects of NEB on expression of IGF family members and related genes in the involuting uterus. Cows were allocated to two treatments using differential feeding and milking regimes to produce mild NEB or severe NEB (SNEB). Uterine endometrial samples collected 2 weeks post partum were analysed by quantitative PCR. The expression of IGF-binding protein 4 (IGFBP4) mRNA increased in the endometrium of SNEB cows, with trends towards increased IGFBP1 and reduced IGFBP6 expression. There were no significant differences between treatments in mRNA expression of IGF1, IGF2 or of any hormone receptor studied, but significant correlations across all cows in the expression levels of groups of receptors suggested common regulatory mechanisms: type 1 IGF receptor (IGF1R), IGF2R and insulin receptor (INSR); GHR with ESR1; and ESR2 with NR3C1. The expression of IGF1R and INSR also positively correlated with the circulating urea concentration. Matrix metalloproteinases (MMPs) are important in tissue remodelling and can affect IGF signalling via interaction with IGFBPs. The expression levels of MMP1, MMP3, MMP9 and MMP13 mRNAs all showed major upregulation in the endometrium of cows in SNEB and all except MMP9 were highly correlated with expression of IGFBP4. Alpha(2)-HS-glycoprotein (AHSG) and PDK4, two genes implicated in insulin resistance, were also highly expressed in SNEB. These results suggest that cows in SNEB experience alterations to the IGF and insulin signalling pathways in the postpartum endometrium. This may affect the rate of tissue repair with a possible negative impact on subsequent fertility.
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Affiliation(s)
- D Claire Wathes
- Reproduction Group, Department of Veterinary Basic Sciences, Royal Veterinary College, London, UK.
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Abstract
Type 2 diabetes is a complex disorder with diminished insulin secretion and insulin action contributing to the hyperglycemia and wide range of metabolic defects that underlie the disease. The contribution of glucose metabolic pathways per se in the pathogenesis of the disease remains unclear. The cellular fate of glucose begins with glucose transport and phosphorylation. Subsequent pathways of glucose utilization include aerobic and anaerobic glycolysis, glycogen formation, and conversion to other intermediates in the hexose phosphate or hexosamine biosynthesis pathways. Abnormalities in each pathway may occur in diabetic subjects; however, it is unclear whether perturbations in these may lead to diabetes or are a consequence of the multiple metabolic abnormalities found in the disease. This review is focused on the cellular fate of glucose and relevance to human type 2 diabetes.
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Affiliation(s)
- Clara Bouché
- Harvard Medical School, Boston, Massachusetts 02115, USA
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Adrogue HJ, Pena J, Comstock JP. Glyburide increases the secretion, tissue uptake, and action of insulin in conscious normal dogs. Metabolism 1996; 45:579-86. [PMID: 8622600 DOI: 10.1016/s0026-0495(96)90027-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The action of glyburide on glucose homeostasis involves pancreatic and extrapancreatic mechanisms. The relative importance of each of these processes in the hypoglycemic response to sustained administration of glyburide is unknown. In addition, the effect of this drug on the hepatic extraction of insulin is controversial. This investigation uses direct techniques in conscious normal dogs to examine the impact of glyburide therapy (2.5 mg twice daily for 4 weeks) on glucose homeostasis. Preparatory surgery included placement of Doppler flow probes on hepatic vessels and insertion of catheters in carotid artery, portal vein, hepatic vein, and renal vein. After recovery from surgery, animals underwent an intravenous glucose tolerance test ([IGTT] 0.3 g - kg (-1) intravenous glucose bolus) and an insulin infusion clamp test ([IICT] 2 mU - kg (-1) - min (-1) intravenous insulin during 150 minutes) followed by glyburide therapy. After 4 weeks, the IGTT and IICT were repeated. Glyburide increased the insulin secretory response during the late phase of the IGTT and augmented glucose clearance during the IICT. Hepatic extraction of insulin was also stimulated by glyburide. We conclude that the hypoglycemic action of long-term glyburide administration involves stimulation of both insulin secretion by the pancreas and glucose disposal by peripheral tissues. In addition, glyburide augments the extraction of insulin by the liver, and such an effect might prevent the development of sustained high levels of insulin in blood perusing peripheral tissues.
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Affiliation(s)
- H J Adrogue
- Department of Medicine, Renal and Endocrine Sections, Department of Veterans Affairs Medical Center, Houston, TX 77030, USA
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Riccio A, Vigili de Kreutzenberg S, Dorella M, Da Tos V, De Biasi L, Marescotti MC, Tiengo A, Del Prato S. Mechanism(s) of the blood glucose lowering action of benfluorex. DIABETES/METABOLISM REVIEWS 1993; 9 Suppl 1:19S-27S. [PMID: 8299485 DOI: 10.1002/dmr.5610090505] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Benfluorex is a hypolipidaemic agent with biguanide-like properties. To evaluate its blood glucose lowering action, a single-blind study protocol was designed. Two groups of seven type II (non-insulin-dependent) diabetic patients matched for age (50 +/- 4 vs. 53 +/- 1 years), sex, body mass index (27.8 +/- 0.6 vs. 26.5 +/- 0.7 kg/m2), and duration of diabetes were studied before and after 1 month of treatment with benfluorex 150 mg tid (= tres in die = three times a day), PO (= per os = by mouth) or a placebo, respectively. All patients had previously been treated by diet alone. In all patients, parameters of glucose and lipid metabolism were obtained. Insulin sensitivity was assessed by means of a euglycaemic (5.1 +/- 0.1 mM) hyperinsulinaemic (516 +/- 28 pM) clamp performed in combination with [3(-3)H]glucose infusion and indirect calorimetry. In no case was there a significant change in body mass index (27.6 +/- 0.5 vs. 26.4 +/- 0.7 kg/m2). After 1 month of treatment, fasting plasma glucose (6.8 +/- 0.2 vs. 8.1 +/- 0.6 mM) and HbA1C (glycated haemoglobin; 6.5 +/- 0.2 vs. 8.0 +/- 0.7%) were lower in the benfluorex group than in the placebo-treated patients (both p < 0.05). No change was observed in hepatic glucose production (HGP) (13.5 +/- 1.4 vs. 13.9 +/- 1.1 mumol/min per kg), the basal rate of glucose, and lipid oxidation and non-oxidative glucose metabolism, or in plasma triglyceride and total cholesterol concentrations.(ABSTRACT TRUNCATED AT 250 WORDS)
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