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PURPOSE: We aimed to evaluate the near-final height (nFHt) in a large cohort of pediatricpatients with growth hormone deficiency (GHD) and to elaborate a new predictive method of nFHt. METHODS: We recruited GHD patients diagnosed between 1987 and 2014 and followed-up until nFHt. To predict the values of nFHt, each predictor was run in a univariable spline. RESULTS: We enrolled 1051 patients. Pre-treatment height was -2.43 SDS, lower than parental height (THt) (-1.09 SDS, p < 0.001). The dose of recombinant human GH (rhGH) was 0.21mg/kg/week at start of treatment. nFHt was -1.08 SDS (height gain 1.27 SDS), higher than pre-treatment height (p < 0.001) and comparable to THt. 1.6% of the patients were shorter than -2 SDS from THt. The rhGH dose at nFHt was 0.19 mg/kg/week, lower than at the start (p < 0.001). The polynomial regression showed that nFHt was affected by gender, THt, age at puberty, height at puberty, age at the end of treatment (F = 325.37, p < 0.0001, R2 87.2%). CONCLUSION: This large national study shows that GHD children can reach their THt. The rhGH/kg/day dose significantly decreased from the start to the end of the treatment. Our model suggests the importance of a timely diagnosis, possibly before puberty, the beneficial effect of long-term treatment with rhGH, and the key-role of THt. Our prediction model has a very acceptable error compared to the majority of other published studies.
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Enanismo Hipofisario , Hormona de Crecimiento Humana , Estatura , Niño , Estudios de Cohortes , Enanismo Hipofisario/diagnóstico , Enanismo Hipofisario/tratamiento farmacológico , Enanismo Hipofisario/epidemiología , Hormona del Crecimiento/uso terapéutico , Humanos , PubertadRESUMEN
Insulin has pleiotropic effects, and is of importance both as a key regulator of glucose metabolism and as a growth factor [...].
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Insulina Regular Humana , Insulina , Insulina/metabolismo , Metabolismo de los Hidratos de Carbono , Factor I del Crecimiento Similar a la Insulina/metabolismo , Glucosa/metabolismoRESUMEN
Thousands of natural or manufactured chemicals were defined as endocrine-disrupting chemicals (EDCs) because they can interfere with hormone activity and the endocrine system. We summarize and discuss what we know and what we still need to learn about EDCs' pathogenic mechanisms of action, as well as the effects of the most common EDCs on endocrine system health in childhood. The MEDLINE database (PubMed) was searched on 13 May 2022, filtering for EDCs, endocrine diseases, and children. EDCs are a group of compounds with high heterogeneity, but usually disrupt the endocrine system by mimicking or interfering with natural hormones or interfering with the body's hormonal balance through other mechanisms. Individual EDCs were studied in detail, while humans' "cocktail effect" is still unclear. In utero, early postnatal life, and/or pubertal development are highly susceptible periods to exposure. Human epidemiological studies suggest that EDCs affect prenatal growth, thyroid function, glucose metabolism, obesity, puberty, and fertility through several mechanisms. Further studies are needed to clarify which EDCs can mainly act on epigenetic processes. A better understanding of EDCs' effects on human health is crucial to developing future regulatory strategies to prevent exposure and ensure the health of children today, in future generations, and in the environment.
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Disruptores Endocrinos , Niño , Disruptores Endocrinos/toxicidad , Sistema Endocrino , Femenino , Glucosa/farmacología , Hormonas/farmacología , Humanos , Embarazo , Pubertad/metabolismoRESUMEN
Childhood obesity is a major public health problem in industrialized countries. The aim of this study was to estimate the risk of obesity at age 5 based on BMI categories at age 3 and changes in BMI z-score from birth to 3â¯years of age. In this population-based study BMI data of 5173 children were collected at ages 3 and 5 and were linked to information relative to birth weight. The prevalence of obesity at age 5 was 3.8%. The risk of obesity for children born large for gestational age was 6.5%, while it was 18.6% for children overweight at age 3 and 62% for children who were obese at 3. An increase in BMI z-score from birth to 3â¯years increases the risk of obesity at age 5 (OR for increase of one standard deviation 2.8%; 95% CI: 2.46-3.20), but adjusting for BMI z-score at age 3, the effect of trajectory disappears (OR 1.08 95% CI: 0.9-1.29). In other words, if one targeted early preventive interventions to 3-year-olds affected by overweight/obesity (only 9.8% of the study cohort), one could possibly address 71% of children potentially affected by obesity at age 5.
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Peso al Nacer , Índice de Masa Corporal , Obesidad Infantil/epidemiología , Preescolar , Femenino , Humanos , Italia/epidemiología , Masculino , Sobrepeso/epidemiología , Prevalencia , Estudios Prospectivos , Factores de RiesgoRESUMEN
Fetal growth is regulated by a complex interaction of maternal, placental, and fetal factors. The effects and outcomes that chemicals, widely distributed in the environment, may have on the health status of both the mother and the fetus are not yet well defined. Mainly mixtures of chemical substances are found in the mothers and placenta. Exposure to endocrine-disrupting chemicals (EDCs) can be associated with fetal growth retardation, thyroid dysfunction, and neurological disorders. EDCs mostly interfere with insulin, glucocorticoid, estrogenic, and thyroid pathways, with subsequent effects on normal endocrine and metabolic functions, which cause changes in the epigenome and state of inflammation with life-long effects and consequences. International scientific societies recommend the implementation of research and of all possible preventive measures. This review briefly summarizes all these aspects.
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Disruptores Endocrinos/efectos adversos , Desarrollo Fetal/efectos de los fármacos , Retardo del Crecimiento Fetal , Exposición Materna/efectos adversos , Enfermedades del Sistema Nervioso , Enfermedades de la Tiroides , Femenino , Retardo del Crecimiento Fetal/inducido químicamente , Retardo del Crecimiento Fetal/metabolismo , Humanos , Enfermedades del Sistema Nervioso/inducido químicamente , Enfermedades del Sistema Nervioso/embriología , Enfermedades del Sistema Nervioso/metabolismo , Embarazo , Enfermedades de la Tiroides/inducido químicamente , Enfermedades de la Tiroides/embriología , Enfermedades de la Tiroides/metabolismoRESUMEN
Obesity is associated with insulin resistance and low-grade inflammation. Insulin resistance is a risk factor for cancer. A recent chapter in epigenetics is represented by microRNAs (miRNAs), which post-transcriptionally regulate gene expression. Dysregulated miRNA profiles have been associated with diseases including obesity and cancer. Herein we report dysregulated miRNAs in obesity both in animal models and in humans, and we also document dysregulated miRNAs in colorectal cancer (CRC), as example of an obesity-related cancer. Some of the described miRNAs are found to be similarly dysregulated both in obesity, insulin resistance (IR), and CRC. Thus, we present miRNAs as a potential molecular link between obesity and CRC onset and development, giving a new perspective on the role of miRNAs in obesity-associated cancers.
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Neoplasias Colorrectales/genética , Resistencia a la Insulina , MicroARNs/genética , Obesidad/genética , Animales , Neoplasias Colorrectales/metabolismo , Humanos , MicroARNs/metabolismo , Obesidad/metabolismoRESUMEN
KBG syndrome is characterized by short stature, distinctive facial features, and developmental/cognitive delay and is caused by mutations in ANKRD11, one of the ankyrin repeat-containing cofactors. After the advent of whole exome sequencing, the number of clinical reports with KBG diagnosis has increased, leading to a revision of the phenotypic spectrum associated with this syndrome. Here, we report a female child showing clinical features of the KBG syndrome in addition to a caudal appendage at the coccyx with prominent skin fold and a peculiar calcaneus malformation. Exons and exon-intron junctions targeted resequencing of SH3PXD2B and MASP1 genes, known to be associated with prominent coccyx, gave negative outcome, whereas sequencing of ANKRD11 whose mutations matched the KBG phenotype of the proband showed a de novo heterozygous frameshift variant c.4528_4529delCC in exon 9 of ANKRD11. This report contributes to expand the knowledge of the clinical features of KBG syndrome and highlights the need to search for vertebral anomalies and suspect this condition in the presence of a prominent, elongated coccyx.
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Anomalías Múltiples/diagnóstico , Anomalías Múltiples/genética , Enfermedades del Desarrollo Óseo/diagnóstico , Enfermedades del Desarrollo Óseo/genética , Cóccix/anomalías , Estudios de Asociación Genética , Discapacidad Intelectual/diagnóstico , Discapacidad Intelectual/genética , Mutación , Fenotipo , Proteínas Represoras/genética , Anomalías Dentarias/diagnóstico , Anomalías Dentarias/genética , Alelos , Niño , Análisis Mutacional de ADN , Facies , Femenino , Pruebas Genéticas , Genotipo , Humanos , Cariotipo , Radiografía , Evaluación de SíntomasRESUMEN
Wildlife has often presented and suggested the effects of endocrine disrupting chemicals (EDCs). Animal studies have given us an important opportunity to understand the mechanisms of action of many chemicals on the endocrine system and on neurodevelopment and behaviour, and to evaluate the effects of doses, time and duration of exposure. Although results are sometimes conflicting because of confounding factors, epidemiological studies in humans suggest effects of EDCs on prenatal growth, thyroid function, glucose metabolism and obesity, puberty, fertility, and on carcinogenesis mainly through epigenetic mechanisms. This manuscript reviews the reports of a multidisciplinary national meeting on this topic.
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Disruptores Endocrinos/farmacología , Sistema Endocrino/efectos de los fármacos , Animales , Carcinogénesis , Disruptores Endocrinos/efectos adversos , Epigénesis Genética , Femenino , Glucosa/metabolismo , Humanos , Obesidad , EmbarazoRESUMEN
This review briefly describes the most common chronic inflammatory diseases in childhood, such as cystic fibrosis (CF), inflammatory bowel diseases (IBDs), juvenile idiopathic arthritis (JIA), and intrauterine growth restriction (IUGR) that can be considered, as such, for the changes reported in the placenta and cord blood of these subjects. Changes in growth hormone (GH) secretion, GH resistance, and changes in the insulin-like growth factor (IGF) system are described mainly in relationship with the increase in nuclear factor-κB (NF-κB) and pro-inflammatory cytokines. Changes in the growth plate are also reported as well as a potential role for microRNAs (miRNAs) and thus epigenetic changes in chronic inflammation. Many mechanisms leading to growth failure are currently known; however, it is clear that further research in the field is still warranted.
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Artritis Juvenil/metabolismo , Fibrosis Quística/metabolismo , Retardo del Crecimiento Fetal/metabolismo , Placa de Crecimiento/metabolismo , Hormona de Crecimiento Humana/metabolismo , Enfermedades Inflamatorias del Intestino/metabolismo , Somatomedinas/metabolismo , Animales , Artritis Juvenil/patología , Fibrosis Quística/patología , Retardo del Crecimiento Fetal/patología , Placa de Crecimiento/patología , Humanos , Enfermedades Inflamatorias del Intestino/patologíaRESUMEN
Adipokines are cytokines produced mainly by adipose tissue, besides many other tissues such as placenta, ovaries, peripheral-blood mononuclear cells, liver, muscle, kidney, heart, and bone marrow. Adipokines play a significant role in the metabolic syndrome and in cardiovascular diseases, have implications in regulating insulin sensitivity and inflammation, and have significant effects on growth and reproductive function. The objective of this review was to analyze the functions known today of adiponectin, leptin, resistin, and visfatin from placenta throughout childhood and adolescence. It is well known now that their serum concentrations during pregnancy and lactation have long-term effects beyond the fetus and newborn. With regard to puberty, adipokines are involved in the regulation of the relationship between nutritional status and normal physiology or disorders of puberty and altered gonadal function, as, for example, premature pubarche and polycystic ovarian syndrome (PCOS). Cytokines are involved in the maturation of oocytes and in the regular progression of puberty and pregnancy.
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Adipoquinas/metabolismo , Placenta/metabolismo , Síndrome del Ovario Poliquístico/metabolismo , Animales , Femenino , Humanos , Embarazo , Maduración Sexual/fisiologíaRESUMEN
Noonan-like syndrome with loose anagen hair (NSLH), also known as Mazzanti syndrome, is a RASopathy characterized by craniofacial features resembling Noonan syndrome, cardiac defects, cognitive deficits and behavioral issues, reduced growth generally associated with GH deficit, darkly pigmented skin, and an unique combination of ectodermal anomalies. Virtually all cases of NSLH are caused by an invariant and functionally unique mutation in SHOC2 (c.4A>G, p.Ser2Gly). Here, we report on a child with molecularly confirmed NSLH who developed a neuroblastoma, first suspected at the age 3 months by abdominal ultrasound examination. Based on this finding, scanning of the SHOC2 coding sequence encompassing the c.4A>G change was performed on selected pediatric cohorts of malignancies documented to occur in RASopathies (i.e., neuroblastoma, brain tumors, rhabdomyosarcoma, acute lymphoblastic, and myeloid leukemia), but failed to identify a functionally relevant cancer-associated variant. While these results do not support a major role of somatic SHOC2 mutations in these pediatric cancers, this second instance of neuroblastoma in NSLAH suggests a possible predisposition to this malignancy in subjects heterozygous for the c.4A>G SHOC2 mutation.
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Neuroblastoma/complicaciones , Síndrome de Noonan/fisiopatología , Humanos , Recién Nacido , Masculino , Síndrome de Noonan/complicacionesRESUMEN
BACKGROUND: Young adult survivors of childhood acute lymphoblastic leukemia (ALL) treated with protocols including cranial radiotherapy demonstrate a persistent weight gain and reduced final height. Published reports on the effects on growth of different oncologic therapies are conflicting and difficult to interpret because they combined children treated with both cranial irradiation and multi-agent chemotherapy. Our study investigated the effect of chemotherapy alone on body mass index (BMI) and on growth at the achievement of final height in a homogeneous cohort of Italian childhood ALL survivors. METHODS: We retrospectively studied 162 Caucasian patients treated on the Italian Association of Pediatric Hematology and Oncology protocols without radiotherapy between 1989 and 2000 at five Italian centers with 107 inclusions (58 males). Height- and BMI-standard deviation score (SDS) were collected at diagnosis of ALL, at the end of treatment and at the achievement of final height. Changes in height SDS and BMI SDS with time were analyzed using dependent sample Student's t-test. RESULTS: A significant reduction of height-SDS was documented during treatment in both genders. This reduction of height-SDS was not followed by an appropriate catch-up growth, despite the achievement of a mean final height within the normal range. At diagnosis females showed a lower mean BMI-SDS than males. During treatment, in the whole population, BMI-SDS increased significantly. After it, while males lost BMI-SDS, females showed its persistent increase. CONCLUSIONS: Survivors of childhood ALL generally seemed to achieve a normal final height with a BMI within the normal range. These parameters appeared to be only minimally affected by chemotherapy. Nevertheless, height catch-up growth was not completed after chemotherapy in both genders and all patients experienced an increase of BMI-SDS during chemotherapy that only females seemed to conserve until the achievement of final height.
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Antineoplásicos/efectos adversos , Estatura , Índice de Masa Corporal , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Adolescente , Niño , Preescolar , Femenino , Humanos , Lactante , Italia , Estudios Longitudinales , Masculino , Estudios Retrospectivos , Factores Sexuales , SobrevivientesRESUMEN
Thyroid function is closely linked to nutrition through the diet-gut-thyroid axis. This narrative review highlights the influence of nutritional components and micronutrients on thyroid development and function, as well as on the gut microbiota. Micronutrients such as iodine, selenium, iron, zinc, copper, magnesium, vitamin A, and vitamin B12 influence thyroid hormone synthesis and regulation throughout life. Dietary changes can alter the gut microbiota, leading not just to dysbiosis and micronutrient deficiency but also to changes in thyroid function through immunological regulation, nutrient absorption, and epigenetic changes. Nutritional imbalance can lead to thyroid dysfunction and/or disorders, such as hypothyroidism and hyperthyroidism, and possibly contribute to autoimmune thyroid diseases and thyroid cancer, yet controversial issues. Understanding these relationships is important to rationalize a balanced diet rich in essential micronutrients for maintaining thyroid health and preventing thyroid-related diseases. The synthetic comprehensive overview of current knowledge shows the importance of micronutrients and gut microbiota for thyroid function and uncovers potential gaps that require further investigation.
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Microbioma Gastrointestinal , Micronutrientes , Estado Nutricional , Glándula Tiroides , Humanos , Glándula Tiroides/fisiología , Microbioma Gastrointestinal/fisiología , Dieta , Enfermedades de la Tiroides , Hormonas Tiroideas/metabolismoRESUMEN
Obesity is a well-known low-grade chronic inflammatory disease that leads to metabolic derangements, cardiovascular complications, changes in growth, timing of puberty, bone formation, and changes in the ability to face infection [...].
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Serum alkaline phosphatase (ALP) and its isoenzymes reflect bone metabolism: ALP increases the ratio of inorganic phosphate to pyrophosphate systemically and facilitates mineralization as well as reduces extracellular pyrophosphate concentration, an inhibitor of mineral formation. On the contrary, low ALP activity is associated with reduction of bone turnover. ALP includes four isoenzymes depending on the site of tissue expression: intestinal ALP, placental ALP, germ cell ALP and tissue nonspecific ALP or liver/bone/kidney ALP. The bone isoenzyme (B-ALP) is involved in bone calcification and is a marker of bone turnover as a result of osteoblastic activity. ALP and its isoenzymes are crucial in the diagnostic process of all the forms of rickets.The most common cause of rickets is vitamin D nutritional deficiency. The aim of this review is to update on the role played by ALP serum concentrations as a relevant marker in thediagnosis and treatment of rickets. Indeed, the diagnosis of rickets is based on its clinical, radiological and laboratory characteristics. An elevated ALP level is one of the markers for the diagnosis of rickets in children, though it is also associated with bone formation process. ALP is also useful for the differentiation between rickets and other disorders that can mimic rickets because of their clinical and laboratory characteristics, and, together with other biochemical markers, is crucial for the differential diagnosis of the different forms of rickets. Age, severity and duration of rickets may also modulate ALP elevation. Finally, ALP measurements are useful in clinical and therapeutic follow-up.
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Raquitismo , Deficiencia de Vitamina D , Embarazo , Niño , Humanos , Femenino , Fosfatasa Alcalina , Isoenzimas , Difosfatos , PlacentaRESUMEN
Neuro-biological variations in the timing of sexual maturation within a species are part of an evolved strategy that depend on internal and external environmental conditions. An increased incidence of central precocious puberty (CPP) has been described in both adopted and "covid-19 pandemic" children. Until recently, it was hypothesised that the triggers for CPP in internationally adopted children were likely to be better nutrition, greater environmental stability, and improved psychological wellbeing. However, following data collected during and after the coronavirus (COVID-19) global pandemic, other possibilities must be considered. In a society with high levels of child wellbeing, the threat to life presented by an unknown and potentially serious disease and the stressful environment created by lockdowns and other public health measures could trigger earlier pubertal maturation as an evolutionary response to favour early reproduction. The main driver for increased rates of precocious and rapidly progressive puberty during the pandemic could have been the environment of "fear and stress" in schools and households. In many children, CPP may have been triggered by the psychological effects of living without normal social contact, using PPE, being near adults concerned about financial and other issues and the fear of getting ill. The features and time of progression of CPP in children during the pandemic are similar to those observed in adopted children. This review considers the mechanisms regulating puberty with a focus on neurobiological and evolutionary mechanisms, and analyses precocious puberty both during the pandemic and in internationally adopted children searching for common yet unconsidered factors in an attempt to identify the factors which may have acted as triggers. In particular, we focus on stress as a potential factor in the early activation of the hypothalamic-pituitary-gonadal axis and its correlation with rapid sexual maturation.
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COVID-19 , Pubertad Precoz , Niño , Adulto , Humanos , Pubertad Precoz/epidemiología , Pubertad Precoz/etiología , COVID-19/epidemiología , COVID-19/complicaciones , Adopción , Pandemias , Control de Enfermedades TransmisiblesRESUMEN
Bone health starts with maternal health and nutrition, which influences bone mass and density already in utero. The mechanisms underlying the effect of the intrauterine environment on bone health are partly unknown but certainly include the 'foetal programming' of oxidative stress and endocrine systems, which influence later skeletal growth and development. With this narrative review, we describe the current evidence for identifying patients with risk factors for developing osteopenia, today's management of these populations, and screening and prevention programs based on gestational age, weight, and morbidity. Challenges for bone health prevention include the need for new technologies that are specific and applicable to pregnant women, the foetus, and, later, the newborn. Radiofrequency ultrasound spectrometry (REMS) has proven to be a useful tool in the assessment of bone mineral density (BMD) in pregnant women. Few studies have reported that transmission ultrasound can also be used to assess BMD in newborns. The advantages of this technology in the foetus and newborn are the absence of ionising radiation, ease of use, and, above all, the possibility of performing longitudinal studies from intrauterine to extrauterine life. The use of these technologies already in the intrauterine period could help prevent associated diseases, such as osteoporosis and osteopenia, which are characterised by a reduction in bone mass and degeneration of bone structure and lead to an increased risk of fractures in adulthood with considerable social repercussions for the related direct and indirect costs.
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Enfermedades Óseas Metabólicas , Osteoporosis , Recién Nacido , Embarazo , Humanos , Femenino , Densidad Ósea , Enfermedades Óseas Metabólicas/diagnóstico , Enfermedades Óseas Metabólicas/etiología , Enfermedades Óseas Metabólicas/prevención & control , Factores de Riesgo , VitaminasRESUMEN
We report the case of a boy (aged 3 years and 7 months) with severe growth failure (length: -9.53 SDS; weight: -9.36 SDS), microcephaly, intellectual disability, distinctive craniofacial features, multiple skeletal anomalies, micropenis, cryptorchidism, generalized hypotonia, and tendon retraction. Abdominal US showed bilateral increased echogenicity of the kidneys, with poor corticomedullary differentiation, and a slightly enlarged liver with diffuse irregular echotexture. Initial MRI of the brain, performed at presentation, showed areas of gliosis with encephalomalacia and diffused hypo/delayed myelination, and a thinned appearance of the middle and anterior cerebral arteries. Genetic analysis evidenced a novel homozygous pathogenic variant of the pericentrin (PCNT) gene. PCNT is a structural protein expressed in the centrosome that plays a role in anchoring of protein complexes, regulation of the mitotic cycle, and cell proliferation. Loss-of-function variants of this gene are responsible for microcephalic osteodysplastic primordial dwarfism type II (MOPDII), a rare inherited autosomal recessive disorder. The boy died at 8 years of age as a result of an intracranial hemorrhage due to a cerebral aneurism associated with the Moyamoya malformation. In confirmation of previously published results, intracranial anomalies and kidney findings were evidenced very early in life. For this reason, we suggest including MRI of the brain with angiography as soon as possible after diagnosis in follow-up of MODPII, in order to identify and prevent complications related to vascular anomalies and multiorgan failure.
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Aneurisma Intracraneal , Enfermedades Renales , Microcefalia , Masculino , Humanos , Niño , Microcefalia/complicaciones , Microcefalia/genética , Microcefalia/diagnóstico , Aneurisma Intracraneal/complicaciones , Riñón , MutaciónRESUMEN
Metabolic syndrome (MetS) is defined by a cluster of several cardio-metabolic risk factors, specifically visceral obesity, hypertension, dyslipidemia, and impaired glucose metabolism, which together increase risks of developing future cardiovascular disease (CVD) and type 2 diabetes mellitus (T2D). This article is a narrative review of the literature and a summary of the main observations, conclusions, and perspectives raised in the literature and the study projects of the Working Group of Childhood Obesity (WGChO) of the Italian Society of Paediatric Endocrinology and Diabetology (ISPED) on MetS in childhood obesity. Although there is an agreement on the distinctive features of MetS, no international diagnostic criteria in a pediatric population exist. Moreover, to date, the prevalence of MetS in childhood is not certain and thus the true value of diagnosis of MetS in youth as well as its clinical implications, is unclear. The aim of this narrative review is to summarize the pathogenesis and current role of MetS in children and adolescents with particular reference to applicability in clinical practice in childhood obesity.
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This Position Statement updates the different components of the therapy of obesity (lifestyle intervention, drugs, and surgery) in children and adolescents, previously reported in the consensus position statement on pediatric obesity of the Italian Society of Pediatric Endocrinology and Diabetology and the Italian Society of Pediatrics. Lifestyle intervention is the first step of treatment. In children older than 12 years, pharmacotherapy is the second step, and bariatric surgery is the third one, in selected cases. Novelties are available in the field of the medical treatment of obesity. In particular, new drugs demonstrated their efficacy and safety and have been approved in adolescents. Moreover, several randomized control trials with other drugs are in process and it is likely that some of them will become available in the future. The increase of the portfolio of treatment options for obesity in children and adolescents is promising for a more effective treatment of this disorder.