Metabolic syndrome: Difference between revisions
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The '''metabolic syndrome''', also known as the ''dysmetabolic [[syndrome]]'', ''metabolic syndrome X'', or ''insulin resistance syndrome'', is defined as "a cluster of metabolic [[risk factor]]s for [[cardiovascular disease]]s and [[type 2 diabetes mellitus]]. The main components of metabolic syndrome X include excess abdominal [[adipocyte|fat]]; atherogenic dyslipidemia; [[hypertension]]; [[hyperglycemia]]; [[insulin]] resistance; a proinflammatory state; and a prothrombotic (thrombosis) state."<ref name="title">{{cite web |url=http://www.nlm.nih.gov/cgi/mesh/2008/MB_cgi?term=Metabolic+Syndrome+X |title=Metabolic Syndrome X |accessdate=2007-12-18 |author=National Library of Medicine |authorlink= |coauthors= |date= |format= |work= |publisher= |pages= |language= |archiveurl= |archivedate= |quote=}}</ref> | The '''metabolic syndrome''', also known as the ''dysmetabolic [[syndrome]]'', ''metabolic syndrome X'', or ''insulin resistance syndrome'', is defined as "a cluster of metabolic [[risk factor]]s for [[cardiovascular disease]]s and [[type 2 diabetes mellitus]]. The main components of metabolic syndrome X include excess abdominal [[adipocyte|fat]]; atherogenic dyslipidemia; [[hypertension]]; [[hyperglycemia]]; [[insulin]] resistance; a proinflammatory state; and a prothrombotic (thrombosis) state."<ref name="title">{{cite web |url=http://www.nlm.nih.gov/cgi/mesh/2008/MB_cgi?term=Metabolic+Syndrome+X |title=Metabolic Syndrome X |accessdate=2007-12-18 |author=National Library of Medicine |authorlink= |coauthors= |date= |format= |work= |publisher= |pages= |language= |archiveurl= |archivedate= |quote=}}</ref> | ||
"<font face="Gill Sans MT">''Although the metabolic syndrome has been defined in various ways, the ultimate importance of recognizing this combination of disorders is that it helps identify individuals at high risk for both type 2 diabetes and cardiovascular disease."</font><ref name=brenseke2013/> | |||
The metabolic syndrome is a major public health concern worldwide as a particularly serious consequence of the global [[obesity]] epidemic <ref>{{cite web |url=http://abcnews.go.com/Health/Diet/wireStory?id=3761598 |title=ABC News: The World Is Getting Rounder |accessdate=2007-11-17 |format= |work=}}</ref>, but the metabolic syndrome can be present in the absence of frank obesity. Almost one fourth of Americans have metabolic syndrome, and the proportion keeps raising.<ref>{{cite web |url=http://www.nhlbi.nih.gov/health/dci/Diseases/ms/ms_whatis.html |title=What Is Metabolic Syndrome? |accessdate=2007-11-17 |format= |work=}}</ref> | The metabolic syndrome is a major public health concern worldwide as a particularly serious consequence of the global [[obesity]] epidemic <ref>{{cite web |url=http://abcnews.go.com/Health/Diet/wireStory?id=3761598 |title=ABC News: The World Is Getting Rounder |accessdate=2007-11-17 |format= |work=}}</ref>, but the metabolic syndrome can be present in the absence of frank obesity. Almost one fourth of Americans have metabolic syndrome, and the proportion keeps raising.<ref>{{cite web |url=http://www.nhlbi.nih.gov/health/dci/Diseases/ms/ms_whatis.html |title=What Is Metabolic Syndrome? |accessdate=2007-11-17 |format= |work=}}</ref> | ||
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==Risk factors for developing metabolic syndrome== | ==Risk factors for developing metabolic syndrome== | ||
===Fetal programming and metabolic syndrome=== | ===Fetal programming and metabolic syndrome=== | ||
Refs. | Refs.<ref name=brenseke2013>Brenseke B, Prater MR, Bahamonde J, Gutierrez JC. (2013) [http://dx.doi.org/10.1155/2013/368461 Current Thoughts on maternal nutrition and fetal programming of the metabolic syndrome]. ''J Pregnancy'' 2013:368461. | ||
*<font face="Gill Sans MT"><u>Abstract</u>: | |||
<ref name=brenseke2013>Brenseke B, Prater MR, Bahamonde J, Gutierrez JC. (2013) [http://dx.doi.org/10.1155/2013/368461 | |||
*Chronic diseases such as type 2 diabetes and cardiovascular disease are the leading cause of death and disability worldwide. | *Chronic diseases such as type 2 diabetes and cardiovascular disease are the leading cause of death and disability worldwide. | ||
*Although the metabolic syndrome has been defined in various ways, the ultimate importance of recognizing this combination of disorders is that it helps identify individuals at high risk for both type 2 diabetes and cardiovascular disease. Evidence from observational and experimental studies links adverse exposures in early life, particularly relating to nutrition, to chronic disease susceptibility in adulthood. | *Although the metabolic syndrome has been defined in various ways, the ultimate importance of recognizing this combination of disorders is that it helps identify individuals at high risk for both type 2 diabetes and cardiovascular disease. | ||
*Evidence from observational and experimental studies links adverse exposures in early life, particularly relating to nutrition, to chronic disease susceptibility in adulthood. | |||
*Such studies provide the foundation and framework for the relatively new field of developmental origins of health and disease (DOHaD). | *Such studies provide the foundation and framework for the relatively new field of developmental origins of health and disease (DOHaD). | ||
*Although great strides have been made in identifying the putative concepts and mechanisms relating specific exposures in early life to the risk of developing chronic diseases in adulthood, a complete picture remains obscure. | *Although great strides have been made in identifying the putative concepts and mechanisms relating specific exposures in early life to the risk of developing chronic diseases in adulthood, a complete picture remains obscure. | ||
*To date [early 2013], the main focus of the field has been on perinatal and specific nutrient however, the current global health crisis of overweight and obesity demands that perinatal and specific nutrient be examined. | *To date [early 2013], the main focus of the field has been on perinatal and specific nutrient however, the current global health crisis of overweight and obesity demands that perinatal and specific nutrient be examined. | ||
*This paper assembles current thoughts on the concepts and mechanisms behind the DOHaD as they relate to maternal nutrition, and highlights specific contributions made by macro- and micronutrients.</font> | *This paper assembles current thoughts on the concepts and mechanisms behind the DOHaD as they relate to maternal nutrition, and highlights specific contributions made by macro- and micronutrients.</font></ref> <ref name=rinaudo2012>Rinaudo, Paolo, and Erica Wang. (2012) [http://10.1146/annurev-physiol-020911-153245 Fetal programming and metabolic syndrome]. ''Annual review of physiology''. 74:107-130. | ||
*<font face="Gill Sans MT"><u>Abstract</u>: | |||
*Metabolic syndrome is reaching epidemic proportions, particularly in developing countries. | |||
*In this review, we explore the concept—based on the developmental-origin-of-health-and-disease hypothesis—that reprogramming during critical times of fetal life can lead to metabolic syndrome in adulthood. | |||
*Specifically, we summarize the epidemiological evidence linking prenatal stress, manifested by low birth weight, to metabolic syndrome and its individual components. | |||
*We also review animal studies that suggest potential mechanisms for the long-term effects of fetal reprogramming, including the cellular response to stress and both organ- and hormone-specific alterations induced by stress. | |||
*Although metabolic syndrome in adulthood is undoubtedly caused by multiple factors, including modifiable behavior, fetal life may provide a critical window in which individuals are predisposed to metabolic syndrome later in life. </font></ref> | |||
===Suboptimal dietary potassium=== | ===Suboptimal dietary potassium=== | ||
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====Study #2==== | ====Study #2==== | ||
In a somewhat similar study, based on the Korean National Health and Nutritional Examination Survey data from 2008 to 2010 (>19,000 participants), Lee and colleagues<ref name=lee2012>Lee H, Jeonghwan LeeJ, ju Heo N, Han JS. (2012) Dietary Potassium Intake and Risk of Metabolic Syndrome ''Course: American Society of Nephrology Annual Meeting: Abstract Sessions; Session: Fluid, Electrolyte, and Acid-Base Disorders; Date/Time: Friday, November 2, 2012 10:00 AM - 12:00 PM.'' | In a somewhat similar study, based on the Korean National Health and Nutritional Examination Survey data from 2008 to 2010 (>19,000 participants), Lee and colleagues<ref name=lee2012>Lee H, Jeonghwan LeeJ, ju Heo N, Han JS. (2012) Dietary Potassium Intake and Risk of Metabolic Syndrome ''Course: American Society of Nephrology Annual Meeting: Abstract Sessions; Session: Fluid, Electrolyte, and Acid-Base Disorders; Date/Time: Friday, November 2, 2012 10:00 AM - 12:00 PM.'' | ||
* No peer-reviewed publication available yet. See full-text of Abstract on the '''Addendum''' subpage.</ref> <ref name= | * No peer-reviewed publication available yet. See full-text of Abstract on the '''Addendum''' subpage.</ref> <ref name=lee203>Lee H, Lee J, Hwang S-s, Kim S, Chin HJ, Han JS, Heo NJ. (2013) [http://dx.doi.org/10.1371/journal.pone.0055106 Potassium Intake and the Prevalence of Metabolic Syndrome: The Korean National Health and Nutrition Examination Survey 2008–2010]. | ||
*<font face="Gill Sans MT"><u>Adapted from Abstract</u>: | |||
*[F]ew studies have investigated the effect of potassium intake on metabolic syndrome (MetS). | |||
*Data was taken from the Korean National Health and Nutritional Examination Survey (2008–2010) using weighted adjustment. | |||
*Homeostasis model assessment indices were calculated to diagnosis insulin resistance (IR). A total of 16,637 participants (44±0.25 years) were included. | |||
*Women ingested lower amounts of potassium (2.71±0.02 g/day) than men (3.45±0.03 g/day). | |||
*For every 1 g/day potassium increase, women with less than the Adequate Intake (4.7 g/day) of potassium had an 11% risk reduction for MetS (P = 0.004) and a 10% risk reduction for IR (P = 0.026). | |||
*Compared with the reference group (3.5–4.5 g/day), potassium intake was inversely associated with an increased risk of MetS (P = 0.017) and IR (P = 0.021). | |||
*This relationship was more prominent in postmenopausal women, but not observed among men. | |||
*Higher potassium intake is significantly associated with a lower MetS prevalence in women, and IR is believed to be connected.</font></ref> concluded: | |||
:"'''''<font face="Gill Sans MT">Our findings suggest that higher potassium intake is significantly associated with lower risk of MS [metabolic syndrome in women of general population and IR [insulin resistance] is thought to be participated in the relationship</font>.'''''" | :"'''''<font face="Gill Sans MT">Our findings suggest that higher potassium intake is significantly associated with lower risk of MS [metabolic syndrome in women of general population and IR [insulin resistance] is thought to be participated in the relationship</font>.'''''" | ||
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== References == | == References == | ||
{{reflist | 2}} | {{reflist | 2}}[[Category:Suggestion Bot Tag]] |
Latest revision as of 06:01, 18 September 2024
Metabolic syndrome | |
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OMIM | 605552 |
MedlinePlus | 0072903 |
MeSH | D024821 |
The metabolic syndrome, also known as the dysmetabolic syndrome, metabolic syndrome X, or insulin resistance syndrome, is defined as "a cluster of metabolic risk factors for cardiovascular diseases and type 2 diabetes mellitus. The main components of metabolic syndrome X include excess abdominal fat; atherogenic dyslipidemia; hypertension; hyperglycemia; insulin resistance; a proinflammatory state; and a prothrombotic (thrombosis) state."[1]
"Although the metabolic syndrome has been defined in various ways, the ultimate importance of recognizing this combination of disorders is that it helps identify individuals at high risk for both type 2 diabetes and cardiovascular disease."[2]
The metabolic syndrome is a major public health concern worldwide as a particularly serious consequence of the global obesity epidemic [3], but the metabolic syndrome can be present in the absence of frank obesity. Almost one fourth of Americans have metabolic syndrome, and the proportion keeps raising.[4]
The metabolic syndrome is a serious disturbance of body metabolism and physiology, consisting of resistance of certain cell types of the body to the ability of the hormone insulin to promote the entry into cells of the energy-rich molecule, glucose, and two or more of the following abnormalities: high blood pressure (or use of drugs to control hypertension); high levels of serum triglycerides; low levels of high-density lipoprotein (HDL) cholesterol; overweight; detectable levels of the protein albumin in the urine (microalbuminuria). The abnormalities of triglyceride levels typically associate with other blood fat disturbances (dyslipidemia) that foster atherosclerosis (the buildup of plaques in artery walls that can lead to reduced blood flow to vital organs, including the heart) and to formation of blood clots that can break off and clog vital vessels to the brain, causing stroke. The biochemical factors that promote clot formation are also stimulated in the metabolic syndrome, and the syndrome appears to be one of a chronic state of inflammation, the typical body response to tissue injury.
Metabolic syndrome (MS) is a constellation of metabolic derangements associated with vascular endothelial dysfunction and oxidative stress and is widely regarded as an inflammatory condition, accompanied by an increased risk for cardiovascular disease.[5] Diagnostic criteriaThere are different clinical definitions of the metabolic syndrome; because of disagreement about the relative importance of insulin resistance in the cluster of risk factors, two definitions do not involve this risk factor.[6] It is defined by the World Health Organisation using the following criteria:
The American Heart Association reports updated (2013) criteria for diagnosing metabolic syndrome, criteria harmonized among several authoritative sources:[8]
Risk factors for developing metabolic syndromeFetal programming and metabolic syndromeSuboptimal dietary potassiumStudy #1In a cros-sectional study of a representative sample of the U.S. population (>25,000 participants analyzed), Sharma and colleagues[11] concluded:
The study merely identifies an association of low dietary potassium in adults meeting the diagnostic criteria of metabolic syndrome. The association analysis suggested an increased risk of metabolic syndrome of 35% for those with metabolic syndrome consuming 44 mmol/day [1701 mg/day] or less, when compared to those consuming 84 mmol/day [3290 mg/day] or more. The recommended intake of potassium for adult Americans: 120 mmol/day [4700 mg/day]. Accordingly, we do not know what the relative risk of metabolic syndrome when the lower potassium intakes compare with intakes greater than 120 mmol/day, nor from the associational study, whether some type of interventional study that raised potassium intake to >120 mmol/day could prevent or mitigate the metabolic syndrome. Study #2In a somewhat similar study, based on the Korean National Health and Nutritional Examination Survey data from 2008 to 2010 (>19,000 participants), Lee and colleagues[12] [13] concluded:
They added:
Psychological componentsAn interesting but yet underdeveloped aspect of research on the metabolic syndrome relates to the syndrome's psychological components. 'Cynical hostility' appears to predict the metabolic syndrome, which in turn predicts cardiovascular disease.[14] Worthy of note, in a study, only high hostility and low HDL cholesterol predicted coronary heart disease.[15] At present, there is no agreement on the nature of the relationship between hostility and the metabolic syndrome. Consequences of the metabolic syndromeDiabetic complications and cardiovascular diseasesThe metabolic syndrome is thus a cluster of risk factors for diabetes complications and cardiovascular diseases. The syndrome includes proinflammatory and prothrombotic features.[7] Other consequencesThe metabolic syndrome could also promote the development of cancer, polycystic ovary syndrome (PCOS), and nonalcoholic fatty liver disease".[16] Chronic kidney diseaseStudies have established an association of metabolic syndrome and new occurrences of chronic kidney disease. Recently investigators have examined whether metabolic syndrome associates with all-cause mortality and end-stage renal disease, in patients with advanced (stages 3 & 4) kidney disease.[17] They concluded:
Others too have found that the metabolic syndrome associates positively with the rate of progression of chronic kidney disease.[18] CancerA number of components of the metabolic syndrome (MS) are likely to contribute, especially in combination, to cause cancer. While the MS-colon cancer is the most convincing link, other epidemiologic studies investigating the link of MS with other cancers are awaited.[19] References
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