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Chapter 7: Monogenic Forms of Diabetes
CHAPTER 7 MONOGENIC FORMS OF DIABETES Mark A. Sperling, MD, and Abhimanyu Garg, MD Dr. Mark A. Sperling is Emeritus Professor and Chair, University of Pittsburgh, Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, PA. Dr. Abhimanyu Garg is Professor of Internal Medicine and Chief of the Division of Nutrition and Metabolic Diseases at University of Texas Southwestern Medical Center, Dallas, TX. SUMMARY Types 1 and 2 diabetes have multiple and complex genetic influences that interact with environmental triggers, such as viral infections or nutritional excesses, to result in their respective phenotypes: young, lean, and insulin-dependence for type 1 diabetes patients or older, overweight, and often manageable by lifestyle interventions and oral medications for type 2 diabetes patients. A small subset of patients, comprising ~2%–3% of all those diagnosed with diabetes, may have characteristics of either type 1 or type 2 diabetes but have single gene defects that interfere with insulin production, secretion, or action, resulting in clinical diabetes. These types of diabetes are known as MODY, originally defined as maturity-onset diabetes of youth, and severe early-onset forms, such as neonatal diabetes mellitus (NDM). Defects in genes involved in adipocyte development, differentiation, and death pathways cause lipodystrophy syndromes, which are also associated with insulin resistance and diabetes. Although these syndromes are considered rare, more awareness of these disorders and increased availability of genetic testing in clinical and research laboratories, as well as growing use of next generation, whole genome, or exome sequencing for clinically challenging phenotypes, are resulting in increased recognition. A correct diagnosis of MODY, NDM, or lipodystrophy syndromes has profound implications for treatment, genetic counseling, and prognosis. -
Total Serum Phosphate Levels Less Than 3.0 Mg/Dl. • Mild Hypophosp
HYPOPHOSPHATEMIA DEFINITION: Total serum phosphate levels less than 3.0 mg/dL. Mild hypophosphatemia: 2.5-3.0 mg/dL. Moderate hypophosphatemia: 1.0-2.5 mg/dL. Severe hypophosphatemia: < 1.0 mg/dL. INCIDENCE IN CRITICAL ILLNESS: Common. ETIOLOGY: Transcellular shift: Refeeding syndrome (abrupt initiation of carbohydrate causes an insulin spike, which increases cellular phosphate uptake); exogenous administration of insulin; respiratory alkalosis. Renal loss: Diuretics; osmotic diuresis in diabetic ketoacidosis; hyperparathyroidism (primary and secondary; decreases urinary resorption of phosphate); proximal renal tubular dysfunction (Fanconi’s syndrome). Insufficient intestinal absorption: Malnutrition; phosphate-binding antacids; vitamin D deficiency; chronic diarrhea; nasogastric tube suction; malabsorption. Extreme catabolic states: Burns; trauma; sepsis. CLINICAL MANIFESTATIONS: Cardiovascular: Acute left ventricular dysfunction; reversible dilated cardiomyopathy. Hematologic: Acute hemolytic anemia; leukocyte dysfunction. Neuromuscular: Diffuse skeletal muscle weakness; rhabdomyolysis; bone demineralization; acute and chronic respiratory failure secondary to diaphragmatic weakness (impaired ventilator weaning); confusion and lethargy; gait disturbance; paresthesias. TREATMENT: It is impossible to accurately predict the exact quantity of phosphate repletion required because most phosphate is intracellular. Moderate hypophosphatemia: Oral supplementation is usually adequate (provided the gastrointestinal tract is functional). -
Type 3 Diabetes and Its Role Implications in Alzheimer's Disease
International Journal of Molecular Sciences Review Type 3 Diabetes and Its Role Implications in Alzheimer’s Disease 1, 2, 3 Thuy Trang Nguyen y, Qui Thanh Hoai Ta y, Thi Kim Oanh Nguyen , Thi Thuy Dung Nguyen 4,* and Vo Van Giau 5,6,* 1 Faculty of Pharmacy, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City 700000, Vietnam; [email protected] 2 Institute of Research and Development, Duy Tan University, Danang 550000, Vietnam; [email protected] 3 Faculty of Food Science and Technology, Ho Chi Minh City University of Food Industry, Ho Chi Minh City 700000, Vietnam; oanhntk@hufi.edu.vn 4 Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City 700000, Vietnam 5 Graduate School of Environment Department of Industrial and Environmental Engineering, Gachon University, 1342 Sungnam-daero, Sujung-gu, Seongnam-si, Gyeonggi-do 461-701, Korea 6 Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, 1342 Sungnam-daero, Sujung-gu, Seongnam-si, Gyeonggi-do 461-701, Korea * Correspondence: [email protected] (T.T.D.N.); [email protected] (V.V.G.) These authors contributed equally to this work. y Received: 12 April 2020; Accepted: 28 April 2020; Published: 30 April 2020 Abstract: The exact connection between Alzheimer’s disease (AD) and type 2 diabetes is still in debate. However, poorly controlled blood sugar may increase the risk of developing Alzheimer’s. This relationship is so strong that some have called Alzheimer’s “diabetes of the brain” or “type 3 diabetes (T3D)”. Given more recent studies continue to indicate evidence linking T3D with AD, this review aims to demonstrate the relationship between T3D and AD based on the fact that both the processing of amyloid-β (Aβ) precursor protein toxicity and the clearance of Aβ are attributed to impaired insulin signaling, and that insulin resistance mediates the dysregulation of bioenergetics and progress to AD. -
Diabetes and Dementia Mario Barbagallo* and Ligia J
Barbagallo and Dominguez. Int J Diabetes Clin Res 2015, 2:4 ISSN: 2377-3634 International Journal of Diabetes and Clinical Research Commentary: Open Access Diabetes and Dementia Mario Barbagallo* and Ligia J. Dominguez Geriatric Unit, Department DIBIMIS, University of Palermo, Italy *Corresponding author: Mario Barbagallo, UOC di Geriatria e Lungodegenza, AOUP Azienda Universitaria Policlinico, University of Palermo, Italy, Tel: +390916552885, Fax: +390916552952, E-mail: [email protected] speed and executive functions [13,14]. Not only frank dementia, Abstract but also mild cognitive impairment (MCI) is associated with DM2, Persons with type 2 diabetes mellitus (DM2) have an increased as well as an accelerated progression from MCI to dementia [15]. incidence of cognitive decline and dementia. An increased cortical Dementia is the most common comorbidity in persons with diabetes and subcortical atrophy has been found after controlling for in nursing homes [16]. vascular disease and inadequate cerebral circulation. A possible role of insulin resistance and hyperinsulinemia has been suggested Several studies on the cerebral structure of patients with diabetes to mediate the link between DM2 and Alzheimer’s Disease (AD). have evidenced increased cortical and subcortical atrophy (besides Altered insulin signaling may contribute to AD biochemical and increased leukoaraiosis and cerebrovascular disease), which were histopathological lesions. Both hyperglycemia and hypoglycemia associated with impaired cognitive performance [17,18]. Insulin may contribute to cognitive decline in DM2. Recurrent symptomatic and asymptomatic hypoglycemic episodes have been suggested itself and insulin resistance have been suggested as mediators of to cause subclinical brain damage, and permanent cognitive AD-type neurodegeneration. It has been proposed that AD may be impairment. -
Liver Glucose Metabolism in Humans
Biosci. Rep. (2016) / 36 / art:e00416 / doi 10.1042/BSR20160385 Liver glucose metabolism in humans Mar´ıa M. Adeva-Andany*1, Noemi Perez-Felpete*,´ Carlos Fernandez-Fern´ andez*,´ Cristobal´ Donapetry-Garc´ıa* and Cristina Pazos-Garc´ıa* *Nephrology Division, Hospital General Juan Cardona, c/ Pardo Bazan´ s/n, 15406 Ferrol, Spain Synopsis Information about normal hepatic glucose metabolism may help to understand pathogenic mechanisms underlying obesity and diabetes mellitus. In addition, liver glucose metabolism is involved in glycosylation reactions and con- nected with fatty acid metabolism. The liver receives dietary carbohydrates directly from the intestine via the portal vein. Glucokinase phosphorylates glucose to glucose 6-phosphate inside the hepatocyte, ensuring that an adequate flow of glucose enters the cell to be metabolized. Glucose 6-phosphate may proceed to several metabolic path- ways. During the post-prandial period, most glucose 6-phosphate is used to synthesize glycogen via the formation of glucose 1-phosphate and UDP–glucose. Minor amounts of UDP–glucose are used to form UDP–glucuronate and UDP– galactose, which are donors of monosaccharide units used in glycosylation. A second pathway of glucose 6-phosphate metabolism is the formation of fructose 6-phosphate, which may either start the hexosamine pathway to produce UDP-N-acetylglucosamine or follow the glycolytic pathway to generate pyruvate and then acetyl-CoA. Acetyl-CoA may enter the tricarboxylic acid (TCA) cycle to be oxidized or may be exported to the cytosol to synthesize fatty acids, when excess glucose is present within the hepatocyte. Finally, glucose 6-phosphate may produce NADPH and ribose 5-phosphate through the pentose phosphate pathway. -
MODY 2 Presenting As Neonatal Hyperglycaemia: a Need to Reshape the Definition of ªneonatal Diabetesº?
Letters 1331 MODY 2 presenting as neonatal sidered a stringent criterium for selecting patients. We ob- served that the moderate low birth weight of patients No. 1 hyperglycaemia: a need to reshape and No. 3 was probablyinfluenced bya mutation of paternal the definition of ªneonatal diabetesº? origin and subsequent low fetal insulin secretion. Mutations in the GK represent the more frequent cause of Dear Sir, MODY in some series [3] and it has been calculated that up Neonatal diabetes mellitus is defined as a rare condition to 6% of familial Type II non-insulin-dependent) diabetes 1:400.000 live births) of unknown origin, characterised byhy- mellitus could bear a MODY 2 allele [3]. We and others have perglycaemia occurring in the first month of life that requires ex- frequentlyobserved that the mutation-carryingparent of chil- ogenous insulin therapy[1, 2]. The derangement of glucose me- dren with MODY 2 is unaware of his or her hyperglycaemia. tabolism in newborns affected bythis condition could be perma- As a consequence, some previouslydescribed cases of perma- nent permanent neonatal diabetes mellitus, PNDM) or could nent neonatal diabetes of unknown origin might be linked to orcouldnot)recurafterremissionofhyperglycaemiatransient GK mutations in both alleles, even in the absence of consan- neonataldiabetesmellitus,TNDM)[1,2]. Inapedigreewith ma- guineityloop i.e. compound heterozygous). Neonatal, insu- turityonset diabetes of the youngMODY) harbouring the glu- lin-requiring, permanent diabetes mellitus is the main feature cokinase GK, MODY 2) mutation Q38P, we followed a new of GK knock-out mice models [5]. pregnancyofthenon-mutantmotheroftheindexcase.Wefound We believe that the definition of neonatal diabetes currently that 15 days after delivery her child presented hyperglycaemia inuse[1,2]needstoberevisedinorderto:firstly,permanently in- 11.7 mmol) with dehydration and mild ketosis Table 1, patient corporate the concept that TNDM in some cases linked to pa- No. -
Clinical Practice Guideline for Diagnosis, Treatment and Follow-Up of Diabetes Mellitus and Its Complications - 2019
THE SOCIETY of ENDOCRINOLOGY and METABOLISM of TURKEY (SEMT) Clinical Practice Guideline for Diagnosis, Treatment and Follow-up of Diabetes Mellitus and Its Complications - 2019 English Version of the 12th Edition SEMT Diabetes Mellitus Working Group ISBN: 978-605-4011-39-1 CLINICAL PRACTICE GUIDELINE FOR DIAGNOSIS, TREATMENT, AND FOLLOW-UP OF DIABETES MELLITUS AND ITS COMPLICATIONS-2019 © SEMT -2019 This material has been published and distributed by The Society of Endocrinology and Metabolism of Turkey (SEMT). Whole or part of this guideline cannot be reproduced or used for commercial purposes without permission. THE SOCIETY of ENDOCRINOLOGY and METABOLISM of TURKEY (SEMT) Meşrutiyet Cad., Ali Bey Apt. 29/12, Kızılay 06420, Ankara, Turkey Phone. +90 312 425 2072 http://www.temd.org.tr ISBN: 978-605-4011-39-1 English Version of the 12th Edition Publishing Services BAYT Bilimsel Araştırmalar Basın Yayın ve Tanıtım Ltd. Şti. Ziya Gökalp Cad. 30/31 Kızılay 06420, Ankara, Turkey Phone. +90 312 431 3062 Fax +90 312 431 3602 www.bayt.com.tr Printing Miki Matbaacılık San. ve Tic. Ltd. Şti. Matbaacılar Sanayi Sitesi 1516/1 Sk. No. 27 İvedik, Yenimahalle / Ankara, Turkey Phone. +90 312 395 2128 Print Date: October 23, 2019 “Major achievements and important undertakings are only possible through collaborations” “Büyük işler, mühim teşebbüsler; ancak, müşterek mesai ile kabil-i temindir.” MUSTAFA KEMAL ATATÜRK, 1925 PREFACE Dear colleagues, The prevalence of diabetes has been increasing tremendously in the last few decades. As a result , medical professionals/ specialists from different fields encounter many diabetics in their daily practice. At this point, updated guidelines on diabetes management, which take regional specification into consideration is needed. -
Randomized Trial of Intravenous Iron-Induced Hypophosphatemia
CLINICAL MEDICINE Randomized trial of intravenous iron-induced hypophosphatemia Myles Wolf,1,2 Glenn M. Chertow,3,4 Iain C. Macdougall,5 Robert Kaper,6 Julie Krop,6 and William Strauss6 1Division of Nephrology, Department of Medicine, and 2Duke Clinical Research Institute, Duke University School of Medicine, Durham, North Carolina, USA. 3Division of Nephrology, Department of Medicine and 4Department of Health Research and Policy, Stanford University, Stanford, California, USA. 5Renal Unit, King’s College Hospital, London, United Kingdom. 6AMAG Pharmaceuticals, Inc., Waltham, Massachusetts, USA. BACKGROUND. Hypophosphatemia can complicate intravenous iron therapy, but no head-to-head trials compared the effects of newer intravenous iron formulations on risks and mediators of hypophosphatemia. METHODS. In a randomized, double-blinded, controlled trial of adults with iron deficiency anemia from February 2016 to January 2017, we compared rates of hypophosphatemia in response to a single FDA-approved course of ferric carboxymaltose (n = 1,000) or ferumoxytol (n = 997). To investigate pathophysiological mediators of intravenous iron-induced hypophosphatemia, we nested within the parent trial a physiological substudy (ferric carboxymaltose, n = 98; ferumoxytol, n = 87) in which we measured fibroblast growth factor 23 (FGF23), calcitriol, and parathyroid hormone (PTH) at baseline and 1, 2, and 5 weeks later. RESULTS. The incidence of hypophosphatemia was significantly higher in the ferric carboxymaltose versus the ferumoxytol group (<2.0 mg/dl, 50.8% vs. 0.9%; <1.3 mg/dl, 10.0% vs. 0.0%; P < 0.001), and hypophosphatemia persisted through the end of the 5-week study period in 29.1% of ferric carboxymaltose–treated patients versus none of the ferumoxytol-treated patients (P < 0.001). -
Diabetes and Health
Diabetes and Health Diabetes Prevention and Control Program Population and Community Health Bureau Public Health Division NM Department of Health Jill Joseph, Nurse Consultant May 21, 2021 1190 S. St. Francis Drive • Santa Fe, NM 87505 • Phone: 505-827-2613 • Fax: 505-827-2530 • nmhealth.org • Jill Joseph BSN • Nurse Consultant, Diabetes Prevention and Control Program • [email protected] • (505) 476-7618 • There are no conflicts of interest to disclose 1190 S. St. Francis Drive • Santa Fe, NM 87505 • Phone: 505-827-2613 • Fax: 505-827-2530 • nmhealth.org Today’s Discussion • Introduction • Diabetes Basics • Diabetes defined • Common forms • Uncommon forms • Risk Factors/Complications • Management • Prevention • Questions 1190 S. St. Francis Drive • Santa Fe, NM 87505 • Phone: 505-827-2613 • Fax: 505-827-2530 • nmhealth.org New Mexico Department of Health Diabetes Prevention and Control Program • Prevent or delay diabetes • Prevent complications, disabilities, and burden associated with diabetes and related chronic conditions • Advance health equity to improve health outcomes and quality of life among all New Mexicans. 1190 S. St. Francis Drive • Santa Fe, NM 87505 • Phone: 505-827-2613 • Fax: 505-827-2530 • nmhealth.org JJ1 Diabetes and Prediabetes Why talk about these? • Because of the numbers • Because diabetes has profound effects on our bodies 1190 S. St. Francis Drive • Santa Fe, NM 87505 • Phone: 505-827-2613 • Fax: 505-827-2530 • nmhealth.org Slide 5 JJ1 Jill Joseph, 5/17/2021 Diabetes is: • A disorder of the body’s ability to process food for energy use. The food we eat is turned into glucose, or sugar, for our bodies to use for energy. -
The Hematological Complications of Alcoholism
The Hematological Complications of Alcoholism HAROLD S. BALLARD, M.D. Alcohol has numerous adverse effects on the various types of blood cells and their functions. For example, heavy alcohol consumption can cause generalized suppression of blood cell production and the production of structurally abnormal blood cell precursors that cannot mature into functional cells. Alcoholics frequently have defective red blood cells that are destroyed prematurely, possibly resulting in anemia. Alcohol also interferes with the production and function of white blood cells, especially those that defend the body against invading bacteria. Consequently, alcoholics frequently suffer from bacterial infections. Finally, alcohol adversely affects the platelets and other components of the blood-clotting system. Heavy alcohol consumption thus may increase the drinker’s risk of suffering a stroke. KEY WORDS: adverse drug effect; AODE (alcohol and other drug effects); blood function; cell growth and differentiation; erythrocytes; leukocytes; platelets; plasma proteins; bone marrow; anemia; blood coagulation; thrombocytopenia; fibrinolysis; macrophage; monocyte; stroke; bacterial disease; literature review eople who abuse alcohol1 are at both direct and indirect. The direct in the number and function of WBC’s risk for numerous alcohol-related consequences of excessive alcohol increases the drinker’s risk of serious Pmedical complications, includ- consumption include toxic effects on infection, and impaired platelet produc- ing those affecting the blood (i.e., the the bone marrow; the blood cell pre- tion and function interfere with blood cursors; and the mature red blood blood cells as well as proteins present clotting, leading to symptoms ranging in the blood plasma) and the bone cells (RBC’s), white blood cells from a simple nosebleed to bleeding in marrow, where the blood cells are (WBC’s), and platelets. -
Maternal Or Paternal Diabetes and Its Crucial Role in Offspring Birth
H OH metabolites OH Editorial Maternal or Paternal Diabetes and Its Crucial Role in Offspring Birth Weight and MODY Diagnosis Valeria Calcaterra 1,2,* , Angela Zanfardino 3 , Gian Vincenzo Zuccotti 2,4 and Dario Iafusco 3 1 Pediatric and Adolescence Unit, Department of Internal Medicine and Therapeutics, University of Pavia, 27100 Pavia, Italy 2 Pediatric Unit, “V. Buzzi” Children’s Hospital, 20154 Milano, Italy; [email protected] 3 Department of Pediatrics, Regional Center of Pediatric Diabetology “G. Stoppoloni”, University of Campania “Luigi Vanvitelli”, 80138 Napoli, Italy; [email protected] (A.Z.); [email protected] (D.I.) 4 Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, 20157 Milano, Italy * Correspondence: [email protected] Received: 17 September 2020; Accepted: 26 September 2020; Published: 28 September 2020 Abstract: Maturity-onset diabetes of the young (MODY) represents a heterogenous group of monogenic autosomal dominant diseases, which accounts for 1–2% of all diabetes cases. Pregnancy represents a crucial time to diagnose MODY forms due to the 50% risk of inheritance in offspring of affected subjects and the potential implications on adequate fetal weight. Not only a history of maternal diabetes may affect the birth weight of offspring, paternal diabetes should also be taken into consideration for a correct pathogenetic diagnosis. The crucial role of maternal and paternal diabetes inheritance patterns and the impact of this inherited mutation on birthweight and the MODY diagnosis was discussed. Keywords: mother; father; diabetes; birthweight; MODY Maturity-onset diabetes of the young (MODY) represents a heterogenous group of monogenic autosomal dominant diseases, which accounts for 1–2% of all diabetes cases [1]. -
A Rare Case of Multiple Phosphaturic Mesenchymal Tumors Along A
Arai et al. BMC Musculoskeletal Disorders (2017) 18:79 DOI 10.1186/s12891-017-1446-z CASEREPORT Open Access A rare case of multiple phosphaturic mesenchymal tumors along a tendon sheath inducing osteomalacia Ryuta Arai1* , Tomohiro Onodera1, Mohamad Alaa Terkawi1, Tomoko Mitsuhashi2, Eiji Kondo3 and Norimasa Iwasaki1 Abstract Background: Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome characterized by renal phosphate wasting, hypophosphatemia, reduction of 1,25-dihydroxyl vitamin D, and bone calcification disorders. Tumors associated with TIO are typically phosphaturic mesenchymal tumors that are bone and soft tissue origin and often present as a solitary tumor. The high production of fibroblast growth factor 23 (FGF23) by the tumor is believed to be the causative factor responsible for the impaired renal tubular phosphate reabsorption, hypophosphatemia and osteomalacia. Complete removal of the tumors by surgery is the most effective procedure for treatment. Identification of the tumors by advanced imaging techniques is difficult because TIO is small and exist within bone and soft tissue. However, systemic venous sampling has been frequently reported to be useful for diagnosing TIO patients. Case presentation: We experienced a case of 39-year-old male with diffuse bone pain and multiple fragility fractures caused by multiple FGF23-secreting tumors found in the hallux. Laboratory testing showed hypophosphatemia due to renal phosphate wasting and high levels of serum FGF23. Contrast-enhanced MRI showed three soft tissue tumors and an intraosseous tumor located in the right hallux. Systemic venous sampling of FGF23 revealed an elevation in the right common iliac vein and external iliac vein, which suggested that the tumors in the right hallux were responsible for overproduction of FGF23.