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 24,271 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The parallel epidemics of obesity and Type 2 diabetes (T2DM) are progressing rapidly in Australia. The high prevalence of obesity and sedentary lifestyle in the population, compounded by later child bearing, has led to an increase in the prevalence of T2DM pre-dating pregnancy. In some centers, pregnant women with T2DM now outnumber those with type 1 diabetes (T1DM). Although there is controversy as to whether T2DM is associated with worse outcomes than T1DM in pregnancy, modern reports clearly acknowledge the seriousness of this condition. There is a clear association between obesity and adverse pregnancy outcomes (cesarean section, gestational diabetes, hypertensive disorders, birth defects and prematurity). Aside from obesity and the metabolic syndrome, additional factors may contribute to these adverse outcomes: A lack of preconception planning, a failure to achieve tight glycaemic control early in pregnancy and socio-economic disadvantage. It's likely that obesity and diabetes have compounding effects on pregnancy outcomes. In this review, we evaluate both the underlying pathogenesis of T2DM and obesity in the pregnancy context and the adverse clinical maternal and perinatal outcomes described in pregnancies complicated by maternal T2DM and obesity. We highlight the need for a comprehensive strategy to improve clinical outcomes in these pregnancies.
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PMID:Pregnancy in type 2 diabetes mellitus--problems & promises. 1968 54

Preeclampsia (PE) is associated with 3 main risks for the fetus: perinatal death, intrauterine growth restriction (IUGR), preterm birth. Perinatal mortality is increased in infants with IUGR or asphyxia. Conversely, mortality and morbidity associated with preterm birth are not altered by PE without IUGR or asphyxia. Very preterm infant with IUGR are exposed to high risk of prolonged respiratory insufficiency. Neurological complications of prematurity are not more frequent in infants born to mothers with PE. Nevertheless birth asphyxia, (i.e. placental abruption) is associated with impaired neurological out-come especially in infants with neonatal encephalopathy. Long term outcome of infants born to mothers with PE is strongly correlated to gestational age. IUGR increases the risk of hypertension and metabolic syndrome in adulthood. Acute fatty liver of pregnancy can by caused by a fetal fatty-acid oxidation disorder.
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PMID:[Prognosis in newborns after mother's preeclampsia]. 2047 88

The long-term effects of prematurity, early diet and catch-up growth on metabolic risk and body adiposity are of increasing interest to Neonatologists. Poor growth is known to be associated with poorer neuro-developmental outcome but concern exists that increased rates of "catch-up" (or "recovery") growth may be associated with increased adiposity and the later development of metabolic syndrome. In this manuscript we review the published data on body composition in preterm infants, and present new analyses of body adiposity in preterm infants during the 12-15 months of life, and the effect of growth rate (weight gain) on body adiposity. We conclude that although preterm infants have increased adiposity at term corrected age, they generally have lower body fat than their term peers during the rest of the 12-15 months of life. Although more rapid "catch-up" growth in preterm infants during the first year of life is associated with greater body fatness than slower rates of growth, these higher rates of growth lead to body composition more similar to that of the term-born infant, than do slower rates of growth. Although more studies are needed to determine whether these short-term increases or the longer-term decreases in adiposity modify the risk on chronic diseases such as diabetes mellitus, hypertension or other components of the metabolic syndrome, the widely held concern that preterm babies have greater adiposity than their term peers, and that this is worsened by greater amounts of catch-up growth, are not supported by the available evidence.
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PMID:Development of whole body adiposity in preterm infants. 2226 Dec 88

The aim of this review article is to provide an overview of the role of pigs as a biomedical model for humans. The usefulness and limitations of porcine models have been discussed in terms of metabolic, cardiovascular, digestive and bone diseases in humans. Domestic pigs and minipigs are the main categories of pigs used as biomedical models. One drawback of minipigs is that they are in short supply and expensive compared with domestic pigs, which in contrast cost more to house, feed and medicate. Different porcine breeds show different responses to the induction of specific diseases. For example, ossabaw minipigs provide a better model than Yucatan for the metabolic syndrome as they exhibit obesity, insulin resistance and hypertension, all of which are absent in the Yucatan. Similar metabolic/physiological differences exist between domestic breeds (e.g. Meishan v. Pietrain). The modern commercial (e.g. Large White) domestic pig has been the preferred model for developmental programming due to the 2- to 3-fold variation in body weight among littermates providing a natural form of foetal growth retardation not observed in ancient (e.g. Meishan) domestic breeds. Pigs have been increasingly used to study chronic ischaemia, therapeutic angiogenesis, hypertrophic cardiomyopathy and abdominal aortic aneurysm as their coronary anatomy and physiology are similar to humans. Type 1 and II diabetes can be induced in swine using dietary regimes and/or administration of streptozotocin. Pigs are a good and extensively used model for specific nutritional studies as their protein and lipid metabolism is comparable with humans, although pigs are not as sensitive to protein restriction as rodents. Neonatal and weanling pigs have been used to examine the pathophysiology and prevention/treatment of microbial-associated diseases and immune system disorders. A porcine model mimicking various degrees of prematurity in infants receiving total parenteral nutrition has been established to investigate gut development, amino acid metabolism and non-alcoholic fatty liver disease. Endoscopic therapeutic methods for upper gastrointestinal tract bleeding are being developed. Bone remodelling cycle in pigs is histologically more similar to humans than that of rats or mice, and is used to examine the relationship between menopause and osteoporosis. Work has also been conducted on dental implants in pigs to consider loading; however with caution as porcine bone remodels slightly faster than human bone. We conclude that pigs are a valuable translational model to bridge the gap between classical rodent models and humans in developing new therapies to aid human health.
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PMID:Porcine models for the metabolic syndrome, digestive and bone disorders: a general overview. 2244 62

Intrauterine Growth Retardation (IUGR) is defined as a rate of growth of a fetus that is less than normal for the growth potential of the fetus (for that particular gestational age). Small for Gestational Age (SGA) is defined infant born following IUGR, with a weight at birth below the 10th percentile.Suboptimal fetal growth occurring in IUGR fetuses is an important cause of perinatal mortality and morbidity. The acute neonatal consequences of IUGR include metabolic and hematological disturbances, and disrupted thermoregulation; in addition, respiratory distress (RDS), necrotizing enterocolitis (NEC), and retinopathy of prematurity (ROP) may contribute to perinatal morbidity. Metabolic disturbances are related to glucose and fatty acid metabolism. It is well-known that individuals who display poor growth in utero are at significantly increased risk for type 2 diabetes mellitus (T2DM), obesity, hypertension, dyslipidemia, and insulin resistance (the so-called metabolic syndrome, MS). MS ultimately leads to the premature development of cardiovascular diseases. In addition, short stature in children and adults, premature adrenarche, and the polycystic ovarian syndrome (PCOS) are endocrinological sequelae of IUGR. (8) Early onset growth delay and prematurity significantly increase the risk for neurological sequelae and motor and cognitive delay.Future prospective studies need to investigate risk factors for infants who are SGA. If reliable prediction can be achieved, there is potential to reduce future perinatal morbidity and mortality, and long term consequences among SGA babies.
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PMID:Short-term and long-term sequelae in intrauterine growth retardation (IUGR). 2303 Jul 65

The scientific research goals developed and applied beyond their own frontiers, by the National Institutes of Health and High Specialty Hospitals, are presented regarding the specialized medical care of excellence on the field of global health, in benefice of the Mexican population. Maternal mortality as well as malnutrition, and the lack of micronutrients in the pregnant mother and child, put them in disadvantage to face future physical and mental diseases. Low weight at birth, prematurity, and overweight during childhood are factors that can trigger the the development of the metabolic syndrome, with all its consequences on physical and mental health. These challenges are faced with a preventive vision by means of pilot programs like "Towards a new generation of Mexicans" and "Chronic kidney disease stratification in high risk patients", besides the development of new strategies for the prevention and treatment of other chronic diseases such as cancer, hypertension, and diabetes among others by decreasing the number of overweight and obesity people in the Mexican population.
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PMID:[Specialty care in the transformation process]. 2325 15

In recent years, accumulating more and more evidence demonstrating the programming effects of intrauterine development on the subsequent health of the individual. Intrauterine fetal hypotrophy is a consequence of the wide range of pathological processes in different periods of pregnancy. It is the second leading cause of perinatal death after prematurity. Newborns from similar pathological pregnancies are often leaked premature baby and/or small for gestational age (SGA). Premature baby children have not only complicated and postnatal adaptation problems in the neonatal period, but many diseases occurring in later life: 1. Disorders in postnatal growth. 2. Neurological and intellectual consequences of IUH in term children (hyperactivity disorders attention, impaired fine motor skills, speech problems, risk of cerebral palsy). 3. Neurological and intellectual consequences of prematurity IUH (cognitive impairment in children with low birth weight, short stature at birth, and small head circumference for gestational age). 4. Metabolic syndrome (dyslipidemia, abdominal obesity, hypertension and high blood sugar). 5. Abnormal sexual development (hyperandrogenism, polycystic ovary syndrome in girls, reduced testicular size and lower testosterone levels in boys. 6. Other complications associated with intrauterine hypotrophy cardiovascular renal, pulmonary complications (BPD) disorders in vision, sensory neural hearing loss.
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PMID:[Intrauterine hypotrophy and programming the health status. Late problems in newborns with intrauterine hypotrophy]. 2380 79

Fetal growth restriction is the second leading cause of perinatal morbidity and mortality, behind prematurity, and is present in 5-12% of all pregnancies in the general population. Often confused with children constitutionally small for gestational age, those who had not achieved their potential for fetal growth and therefore having true growth restriction can be identified using customized growth curves. The point is to accurately identify fetuses with slowing growth or cessation of growth reflecting a pathological process, because these are at risk of death in utero or chronic fetal hypoxia with a significant impact on brain development. The kinetics of growth and prenatal markers of fetal growth restriction will influence the decision to extract the fetus and the gestational age at birth, as well as other factors involved in the neurodevelopmental outcome. Cognitive deficits and executive, motor, and behavioral dysfunctions described in the short term seem to persist together with greater risk of metabolic syndrome in adulthood. Decisions of fetal extraction by C-section continue to be debated until new epidemiological data will be available on large cohorts monitored over the long term using accurate neurocognitive tools. Understanding the effects of fetal growth restriction on the structure and function of the developing brain is essential for improving the relevance of fetal extraction decisions, perinatal care, and early evaluation of treatments for the prevention of neurodevelopmental disorders.
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PMID:[Intrauterine growth retardation and the developing brain]. 2389 Jul 31

Abnormalities of insulin metabolism include hyperinsulinaemia and insulin resistance, and these problems are collectively referred to as insulin dysregulation in this review. Insulin dysregulation is a key component of equine metabolic syndrome: a collection of endocrine and metabolic abnormalities associated with the development of laminitis in horses, ponies and donkeys. Insulin dysregulation can also accompany prematurity and systemic illness in foals. Causes of insulin resistance are discussed, including pathological conditions of obesity, systemic inflammation and pituitary pars intermedia dysfunction, as well as the physiological responses to stress and pregnancy. Most of the discussion of insulin dysregulation to date has focused on insulin resistance, but there is increasing interest in hyperinsulinaemia itself and insulin responses to feeding. An oral sugar test or in-feed oral glucose tolerance test can be performed to assess insulin responses to dietary carbohydrates, and these tests are now recommended for use in clinical practice. Incretin hormones are likely to play an important role in postprandial hyperinsulinaemia and are the subject of current research. Insulin resistance exacerbates hyperinsulinaemia, and insulin sensitivity can be measured by performing a combined glucose-insulin test or i.v. insulin tolerance test. In both of these tests, exogenous insulin is administered and the rate of glucose uptake into tissues measured. Diagnosis and management of hyperinsulinaemia is recommended to reduce the risk of laminitis. The term insulin dysregulation is introduced here to refer collectively to excessive insulin responses to sugars, fasting hyperinsulinaemia and insulin resistance, which are all components of equine metabolic syndrome.
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PMID:Insulin dysregulation. 2432 86

About 2-5% of all pregnant women develop gestational diabetes mellitus (GDM) during pregnancy and its prevalence has increased markedly within the last decade. GDM is a metabolic syndrome produced by various degrees of carbohydrate intolerance during pregnancy. Various risk factors such as obesity, genetics, environmental factors, and hypertension have been described previously. Maternal and fetal complications occur in around 7% of pregnant women with GDM. In these patients, a relation between proteoglycans and ADAMTS proteases located in extracellular matrix in fetal membranes (placenta, cord, amnion) and complicated pregnancies has already been determined by various animal experiments. Changes in expression, structure and function of ADAMTS proteases and proteoglycans in fetal membranes lead to alteration in the structure of extracellular matrix. If we can establish a balance between these proteoglycans and ADMTS proteases or determine the changes in their structure and functions, it will be possible to predict the risk in high risk pregnancies at early weeks and to initiate treatment early or to follow the target population regularly. In addition, prevention or reduction of maternal and fetal complications may be possible. For this purpose, ADAMTS and proteoglycans the synthesis of which is too much or less, may be targeted and if we would be able to determine and prevent the changes in their levels in the early period of pregnancy, the development of GDM and its complications may be prevented or decreased. Thus, we may identify a marker for early diagnosis and treatment and reduce prematurity, which is the most common cause of fetal death. Fetal and maternal complications, and especially treatment and care costs of prematurity, may also be decreased.
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PMID:The investigation of the role of proteoglycans and ADAMTS levels in fetal membranes in physiopathological process of gestational diabetes. 2504 95


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