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1.
N Engl J Med ; 391(6): 493-503, 2024 08 08.
Artigo em Inglês | MEDLINE | ID: mdl-38828945

RESUMO

BACKGROUND: Children with classic congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency require treatment with glucocorticoids, usually at supraphysiologic doses, to address cortisol insufficiency and reduce excess adrenal androgens. However, such treatment confers a predisposition to glucocorticoid-related complications. In 2-week phase 2 trials, patients with CAH who received crinecerfont, a new oral corticotropin-releasing factor type 1 receptor antagonist, had decreases in androstenedione levels. METHODS: In this phase 3, multinational, randomized trial, we assigned pediatric participants with CAH, in a 2:1 ratio, to receive crinecerfont or placebo for 28 weeks. A stable glucocorticoid dose was maintained for 4 weeks, and the dose was then adjusted to a target of 8.0 to 10.0 mg per square meter of body-surface area per day (hydrocortisone dose equivalents), provided that the androstenedione level was controlled (≤120% of the baseline level or within the reference range). The primary efficacy end point was the change in the androstenedione level from baseline to week 4. A key secondary end point was the percent change in the glucocorticoid dose from baseline to week 28 while androstenedione control was maintained. RESULTS: A total of 103 participants underwent randomization, of whom 69 were assigned to crinecerfont and 34 to placebo; 100 (97%) remained in the trial at 28 weeks. At baseline, the mean glucocorticoid dose was 16.4 mg per square meter per day, and the mean androstenedione level was 431 ng per deciliter (15.0 nmol/liter). At week 4, androstenedione was substantially reduced in the crinecerfont group (-197 ng per deciliter [-6.9 nmol/liter]) but increased in the placebo group (71 ng per deciliter [2.5 nmol/liter]) (least-squares mean difference [LSMD], -268 ng per deciliter [-9.3 nmol/liter]; P<0.001); the observed mean androstenedione value, obtained before the morning glucocorticoid dose, was 208 ng per deciliter (7.3 nmol/liter) in the crinecerfont group, as compared with 545 ng per deciliter (19.0 nmol/liter) in the placebo group. At week 28, the mean glucocorticoid dose had decreased (while androstenedione control was maintained) by 18.0% with crinecerfont but increased by 5.6% with placebo (LSMD, -23.5 percentage points; P<0.001). Headache, pyrexia, and vomiting were the most common adverse events. CONCLUSIONS: In this phase 3 trial, crinecerfont was superior to placebo in reducing elevated androstenedione levels in pediatric participants with CAH and was also associated with a decrease in the glucocorticoid dose from supraphysiologic to physiologic levels while androstenedione control was maintained. (Funded by Neurocrine Biosciences; CAHtalyst Pediatric ClinicalTrials.gov number, NCT04806451.).


Assuntos
Hiperplasia Suprarrenal Congênita , Androstenodiona , Glucocorticoides , Humanos , Hiperplasia Suprarrenal Congênita/tratamento farmacológico , Androstenodiona/sangue , Feminino , Masculino , Criança , Pré-Escolar , Glucocorticoides/administração & dosagem , Glucocorticoides/efeitos adversos , Adolescente , Método Duplo-Cego , Hidrocortisona
2.
Endocr Pract ; 2024 Sep 12.
Artigo em Inglês | MEDLINE | ID: mdl-39277085

RESUMO

OBJECTIVES: 1) To examine anthropometric changes of patients with classic 46,XX CAH and matched referents; 2) To investigate the impact of improvements in diagnosis and care on growth patterns in these patients by comparing changes in anthropometric parameters before and after CAH consensus guidelines. METHODS: This was a retrospective cohort study nested within three large integrated health-systems. Seventy-six patients with classic 46XX CAH and 1,102 matched referents <21 years of age were identified. Anthropometric measurements including age-specific percentiles for height, weight, and body mass index were examined and compared between groups using linear mixed-effect models. Anthropometric trajectories were explored using latent class analyses (LCA). RESULTS: CAH patients had lower height percentiles than referents at all time points. Differences ranged from 10.7% to 28.4%. After age 5 differences in height were only significant among study participants born before the publication of CAH consensus guidelines. LCA of height detected a "gradual growth increase" pattern in 28% of CAH cases and only 4% of referents, and a "growth stunting" pattern was observed in 13% of CAH cases and 6% of referents. Height percentile measures did not differ in CAH patients with or without evidence of hormonal interventions (growth hormone and/or puberty blockers) used to increase adult height. CONCLUSIONS: There is substantial heterogeneity in growth trajectories of CAH patients. Although stunting may affect CAH patients, advances in diagnosis and care improved anthropometric outcomes in this population. Understanding the disease- and therapy-related mechanisms that explain the different growth patterns requires additional research.

3.
Pediatr Blood Cancer ; 63(2): 306-12, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26496000

RESUMO

BACKGROUND: Diamond-Blackfan anemia (DBA) is a rare inherited bone marrow failure syndrome. The mainstays of treatment involve chronic red cell transfusions, long-term glucocorticoid therapy, and stem cell transplantation. Systematic data concerning endocrine function in DBA are limited. We studied patients in the DBA Registry (DBAR) of North America to assess the prevalence of various endocrinopathies. PROCEDURE: In a pilot study, retrospective data were collected for 12 patients with DBA. Subsequently, patients with DBA aged 1-39 years were recruited prospectively. Combined, 57 patients were studied; 38 chronically transfused, 12 glucocorticoid-dependent, and seven in remission. Data were collected on anthropometric measurements, systematic screening of pituitary, thyroid, parathyroid, adrenal, pancreatic, and gonadal function, and ferritin levels. Descriptive statistics were tabulated and group differences were assessed. RESULTS: Fifty-three percent of patients had ≥ 1 endocrine disorder, including adrenal insufficiency (32%), hypogonadism (29%), hypothyroidism (14%), growth hormone dysfunction (7%), diabetes mellitus (2%), and/or diabetes insipidus (2%). Ten of the 33 patients with available heights had height standard deviation less than -2. Low 25-hydroxy vitamin D (25(OH)D) levels were present in 50%. A small proportion also had osteopenia, osteoporosis, or hypercalciuria. Most with adrenal insufficiency were glucocorticoid dependent; other endocrinopathies were more common in chronically transfused patients. CONCLUSIONS: Endocrine dysfunction is common in DBA, as early as the teenage years. Although prevalence is highest in transfused patients, patients taking glucocorticoids or in remission also have endocrine dysfunction. Longitudinal studies are needed to better understand the etiology and true prevalence of these disorders.


Assuntos
Anemia de Diamond-Blackfan/complicações , Doenças do Sistema Endócrino/epidemiologia , Doenças do Sistema Endócrino/etiologia , Adolescente , Adulto , Anemia de Diamond-Blackfan/terapia , Transfusão de Sangue , Criança , Pré-Escolar , Feminino , Glucocorticoides/uso terapêutico , Humanos , Lactente , Masculino , Projetos Piloto , Prevalência , Sistema de Registros , Estudos Retrospectivos , Adulto Jovem
4.
Front Urol ; 22023.
Artigo em Inglês | MEDLINE | ID: mdl-37885597

RESUMO

Introduction: Parents and guardians of infants and young children with differences of sex development (DSD) often face numerous health and social decisions about their child's condition. While proxy health decisions can be stressful in any circumstance, they are further exacerbated in this clinical context by significant variations in clinical presentation, parental lack of knowledge about DSD, irreversibility of some options (e.g., gonadectomy), a paucity of research available about long-term outcomes, and anticipated decisional regret. This study aimed to engage clinicians, parents, and an adult living with DSD to collaboratively develop a suite of patient decision aids (PDAs) to respond to the decisional needs of parents and guardians of infants and young children diagnosed with DSD. Methods: We used a systematic co-development process guided by the Ottawa Decision Support Framework and the International Patient Decision Aids Standards (IPDAS). The five steps were: literature selection, establish the team, decisional needs assessment, create the PDAs, and alpha testing. Results: We developed four PDAs to support parents/guardians of infants or young children diagnosed with DSD about four priority decisions identified through our decisional needs assessment: genetic testing, gender of rearing, genital surgery and gonadal surgery. All four PDAs include information for parents about DSD, the options, reasons to choose or avoid each option, and opportunities for parents/guardians to rate the importance of features of each option to clarify their values for these features. Qualitative feedback was positive from clinicians, parents and an adult living with DSD. Conclusions: These PDAs are clinical tools designed to support parents/guardians and to promote making an informed and shared DSD-related decision. While these tools are specific to DSD, they contain themes and elements translatable to other pediatric populations.

5.
Front Urol ; 32023.
Artigo em Inglês | MEDLINE | ID: mdl-37920725

RESUMO

Introduction: Parents of infants and young children newly diagnosed with differences of sex development (DSD) commonly face medical and psychosocial management decisions at a time when they are first learning about the condition and cannot consult their child for input. The aim of this study was to identify areas of greatest need for parental decisional support. Methods: 34 parents of children receiving care for DSD at one of three US children's hospitals participated in a survey to learn what clinical and psychosocial decisions needed to be made on behalf of their child. Parents were then asked to identify and focus on a "tough" decision and respond to questions assessing factors affecting decision-making, decision-making preferences, decisional conflict, and decision regret. Descriptive analyses were conducted. Results: Decisions about surgery and aspects of sharing information about their child's condition with others were the two most frequently reported decisions overall, experienced by 97% and 88% of parents, as well as most frequently nominated as tough decisions. Many parents reported mild to moderate levels of decisional conflict (59%) and decision regret (74%). Almost all parents (94%) reported experiencing at least one factor as interfering with decision-making (e.g., "worried too much about choosing the 'wrong' option"). Parents universally reported a desire to be involved in decision-making - preferably making the final decision primarily on their own (79%), or together with their child's healthcare providers (21%). The majority of parents judged healthcare providers (82%) and patient/family organizations (58%) as trustworthy sources of information. Discussion: Parents of children with DSD encounter medical, surgical, and psychosocial management decisions. Despite difficulties including emotional distress and informational concerns (including gaps and overload), parents express strong desires to play key roles in decision-making on behalf of their children. Healthcare providers can help identify family-specific needs through observation and inquiry in the clinical context. Together with families, providers should focus on specific clinical management decisions and support parental involvement in making decisions on behalf of young children with DSD.

6.
J Pediatr Urol ; 19(1): 39-49, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36244898

RESUMO

INTRODUCTION: Parents of infants born with differences in sex development (DSD) face many difficult decisions. As part of a larger project designed to develop educational interventions to promote shared decision making, this study assessed healthcare professionals' (HCPs) perceptions of parental decision-making needs when an infant is born with a DSD. METHODS: A cross-sectional web-based survey following the Ottawa Decision Support Framework was conducted in two waves, between October 2020 and June 2022. Survey domains included: common DSD decisions, indicators of parents' decisional needs, and resources and approaches to support parental decision making. Eligible participants were HCPs working within interprofessional pediatric DSD centers in the USA. Up to three reminders were sent. Descriptive analysis was conducted. RESULTS: 71 HCPs participated; most (>90%) reported parents experience signs of decisional conflict including feeling unsure, worrying about what could go wrong, and fear of choosing a "wrong," irreversible option. The majority (90%) reported parents experience strong emotions interfering with their receptivity to information or deliberation. The majority (>70%) identified inadequate parental knowledge of the DSD as a barrier to decision making, coupled with information overload (>90%). HCPs rated several factors as "very" important, including: parents having information on benefits, harms, and other features of options (93%), having information about all the available options (87%), and having access to providers to discuss the options (84%). Providers endorsed using a variety of approaches to support parents' decision making; however, access to decision aids was not universally rated as highly important (very, 44%; somewhat, 46%; a little, 10%). IMPLICATIONS: Overall, HCPs expressed favorable attitudes toward supporting active parental participation in medical decision making. Opportunities for enhanced support of shared decision making included: a) recognizing and addressing parental emotional distress and informational overload at a time when parents need to consider complex options for their infant or young child; and b) the need for HCPs to encourage values clarification in decision-making encounters with parents.


Assuntos
Tomada de Decisões , Pais , Criança , Humanos , Lactente , Estudos Transversais , Pais/psicologia , Desenvolvimento Sexual , Atenção à Saúde
7.
Front Endocrinol (Lausanne) ; 13: 840361, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35586622

RESUMO

Introduction: The known markers of insulin resistance in obese children are well studied. However, they require serial measurements and complicated calculations. The objective is to study IGFBP-1 and its relation with other known risk measures. Materials and Methods: The study included 98 New York City school students of diverse ethnic/racial backgrounds (57 males and 41 females), 11-15 years of age. Subjects were enrolled in a cross-sectional study, and anthropometric measures were collected. They underwent fasting intravenous glucose tolerance tests (IVGTT), and glucose, insulin, lipids, IGFBP-1, adiponectin and inflammatory markers were collected. Results: The subjects were stratified into 3 groups based upon the BMI Z-score. Out of all the subjects, 65.3% were in the group with a BMI Z-score <1 SDS, 16.3% subjects were in the group with a BMI Z-score of 1 to 2 SDS, and 18.4% of the subjects were in the group with a BMI Z-score of more than 2 SDS. The group with a BMI Z-score of more than 2 SDS had increased waist circumference (WC), body fat, increased fasting insulin, and triglycerides (TG). This group had decreased levels of adiponectin and HDL and low IGFBP-1 as compared to the group with BMI <1 SDS. The group with a BMI Z-score of 1 to 2 SDS had a decreased level of IGFBP-1 as compared to the group with a BMI Z-score less than 1 SDS. IGFBP-1 inversely correlated with age, WC, BMI, body fat, TG, and insulin levels. IGFBP-1 positively correlated with adiponectin and HDL levels. Conclusion: IGFBP-1 in children can identify the presence of insulin resistance in the group with BMI 1 to 2 SDS, even before the known markers of insulin resistance such as elevated triglycerides and even before decreased HDL and adiponectin levels are identified.


Assuntos
Resistência à Insulina , Obesidade Infantil , Adiponectina , Adolescente , Biomarcadores/sangue , Índice de Massa Corporal , Criança , Estudos Transversais , Jejum/sangue , Feminino , Humanos , Insulina/sangue , Proteína 1 de Ligação a Fator de Crescimento Semelhante à Insulina/sangue , Masculino , Obesidade Infantil/sangue , Triglicerídeos/sangue
8.
Endocr Rev ; 43(1): 91-159, 2022 01 12.
Artigo em Inglês | MEDLINE | ID: mdl-33961029

RESUMO

Congenital adrenal hyperplasia (CAH) is a group of autosomal recessive disorders affecting cortisol biosynthesis. Reduced activity of an enzyme required for cortisol production leads to chronic overstimulation of the adrenal cortex and accumulation of precursors proximal to the blocked enzymatic step. The most common form of CAH is caused by steroid 21-hydroxylase deficiency due to mutations in CYP21A2. Since the last publication summarizing CAH in Endocrine Reviews in 2000, there have been numerous new developments. These include more detailed understanding of steroidogenic pathways, refinements in neonatal screening, improved diagnostic measurements utilizing chromatography and mass spectrometry coupled with steroid profiling, and improved genotyping methods. Clinical trials of alternative medications and modes of delivery have been recently completed or are under way. Genetic and cell-based treatments are being explored. A large body of data concerning long-term outcomes in patients affected by CAH, including psychosexual well-being, has been enhanced by the establishment of disease registries. This review provides the reader with current insights in CAH with special attention to these new developments.


Assuntos
Hiperplasia Suprarrenal Congênita , Hiperplasia Suprarrenal Congênita/tratamento farmacológico , Hiperplasia Suprarrenal Congênita/terapia , Humanos , Hidrocortisona , Recém-Nascido , Mutação , Triagem Neonatal , Esteroide 21-Hidroxilase/genética
9.
J Pediatr Endocrinol Metab ; 24(11-12): 913-9, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22308842

RESUMO

OBJECTIVE: In adults, elevated levels of retinol binding protein 4 (RBP4) have been associated with biochemical markers of adiposity-related co-morbidities including insulin resistance, dyslipidemia, hypertension, and abdominal obesity. This study examined the relationship between RBP4 and risk factors for co-morbidities of adiposity in a population of ethnically diverse children in early- to mid-adolescence in the public school system of New York City. MATERIALS/METHODS: We analyzed anthropometric (body mass index, % body fat, waist circumference), metabolic (lipids, glucose), and inflammatory (TNF-alpha, interleukin-6, C-reactive protein, adiponectin) markers for adiposity-related co-morbidities and serum alanine aminotransferase (ALT) in 106 school children (65 males, 41 females) 11-15 years of age (mean +/- SD = 13.0 +/- 0.1 years) who were enrolled in the Reduce Obesity and Diabetes (ROAD) project. Insulin sensitivity was assessed by quantitative insulin sensitivity check index. Insulin secretory capacity was measured as acute insulin response and glucose disposal index. RESULTS: Serum RBP4 was significantly correlated directly with ALT, triglycerides, and triglyceride z-score, and inversely correlated with adiponectin. Correlations with ALT and adiponectin remained significant when corrected for % body fat, age, and gender. There were significant ethnic differences in the relationship of RBP4 to ALT, glucose disposal index and adiponectin. CONCLUSIONS: In early- to mid-adolescents, circulating concentrations of RBP4 are correlated with multiple risk factors for adiposity-related co-morbidities. The observation that many associations persisted when corrected for % body fat, suggests that RBP4 can be viewed as an independent marker of adiposity-related co-morbidity risk in children.


Assuntos
Adiposidade/genética , Obesidade/epidemiologia , Obesidade/genética , Proteínas Plasmáticas de Ligação ao Retinol/genética , Adolescente , Glicemia/metabolismo , Composição Corporal/genética , Criança , Comorbidade , Feminino , Humanos , Inflamação/epidemiologia , Inflamação/genética , Resistência à Insulina/genética , Lipídeos/sangue , Masculino , Prevalência , Fatores de Risco
10.
Int J Neonatal Screen ; 6(2)2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32832708

RESUMO

Newborn screening for congenital adrenal hyperplasia (CAH) caused by 21-hydroxylase deficiency is mandated throughout the US. Filter paper blood specimens are assayed for 17-hydroxyprogesterone (17OHP). Prematurity, low birth weight, or critical illness cause falsely elevated results. The purpose of this report is to highlight differences in protocols among US state laboratories. We circulated a survey to state laboratory directors requesting qualitative and quantitative information about individual screening programs. Qualitative and quantitative information provided by 17 state programs were available for analysis. Disease prevalence ranged from 1:9941 to 1:28,661 live births. Four state laboratories mandated a second screen regardless of the initial screening results; most others did so for infants in intensive care units. All but one program utilized birthweight cut-points, but cutoffs varied widely: 17OHP values of 25 to 75 ng/mL for birthweights >2250-2500 g. The positive predictive values for normal birthweight infants varied from 0.7% to 50%, with the highest predictive values based in two of the states with a mandatory second screen. Data were unavailable for negative predictive values. These data imply differences in sensitivity and specificity in CAH screening in the US. Standardization of newborn screening protocols could improve the positive predictive value.

11.
J Pediatr Endocrinol Metab ; 22(11): 1061-7, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20101892

RESUMO

INTRODUCTION: Twenty-four hour ambulatory blood pressure (ABPM) is emerging as a valuable tool to assess blood pressure (BP) changes in children with type 1 diabetes mellitus (DM1). Hypertension (HTN) is an important risk factor for, and may be an important indicator of diabetic nephropathy. Early accurate identification of HTN in DM1 may improve outcomes. AIM: To evaluate BP in adolescents with DM1 using 24-hour ABPM, and to identify risk factors associated with abnormal blood pressure. METHOD: The ABPM of 105 children with DM1 was reviewed. Mean systolic BP (sBP) percentile was determined from the National High Blood Pressure Education Program (NHBPEP) tables. The patients with abnormal sBP were compared to those with normal sBP with respect to age, race, sex, body mass index (BMI) percentile, duration of DM1, average hemoglobin A1c (HbA1c) over the preceding year, and family history of hypertension. RESULTS: Mean sBP was normal in 71%, whereas 23% had pre-hypertension, and 6% had stage 1 hypertension. Those who had abnormal sBP (pre-hypertension and stage 1 hypertension) had higher HbA1c (p = 0.023) and were more likely to be male (p = 0.03) than those with normal sBP. CONCLUSION: Stage 1 hypertension is present in 6%, and pre-hypertension in 23% of adolescents with DM1. Poor diabetes control and male gender appear to be risk factors for abnormal sBP as measured by 24-hour ambulatory blood pressure monitoring.


Assuntos
Pressão Sanguínea/fisiologia , Diabetes Mellitus Tipo 1/metabolismo , Hipertensão/metabolismo , Adolescente , Glicemia/metabolismo , Monitorização Ambulatorial da Pressão Arterial , Criança , Diabetes Mellitus Tipo 1/complicações , Diabetes Mellitus Tipo 1/etnologia , Saúde da Família , Feminino , Hemoglobinas Glicadas/metabolismo , Hispânico ou Latino/etnologia , Humanos , Hipertensão/complicações , Hipertensão/etnologia , Masculino , New York/epidemiologia , Estudos Retrospectivos , População Branca/etnologia
12.
F1000Res ; 8: 363, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30984389

RESUMO

Congenital adrenal hyperplasia has traditionally been treated with daily oral doses of glucocorticoids and mineralocorticoid supplements. Such therapy does not precisely replicate the adrenal cortex's circadian pattern. As a consequence, patients are intermittently overtreated or undertreated leading to growth suppression in children, excess weight gain and altered metabolism. Several new treatments are on the horizon. This article will summarize some new potential therapies as adjuncts to, or replacement for, standard therapy.


Assuntos
Hiperplasia Suprarrenal Congênita , Hiperplasia Suprarrenal Congênita/tratamento farmacológico , Criança , Glucocorticoides/uso terapêutico , Humanos
13.
J Clin Endocrinol Metab ; 93(12): 4576-99, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18782869

RESUMO

OBJECTIVE: Our objective was to formulate practice guidelines for the treatment and prevention of pediatric obesity. CONCLUSIONS: We recommend defining overweight as body mass index (BMI) in at least the 85th percentile but < the 95th percentile and obesity as BMI in at least the 95th percentile against routine endocrine studies unless the height velocity is attenuated or inappropriate for the family background or stage of puberty; referring patients to a geneticist if there is evidence of a genetic syndrome; evaluating for obesity-associated comorbidities in children with BMI in at least the 85th percentile; and prescribing and supporting intensive lifestyle (dietary, physical activity, and behavioral) modification as the prerequisite for any treatment. We suggest that pharmacotherapy (in combination with lifestyle modification) be considered in: 1) obese children only after failure of a formal program of intensive lifestyle modification; and 2) overweight children only if severe comorbidities persist despite intensive lifestyle modification, particularly in children with a strong family history of type 2 diabetes or premature cardiovascular disease. Pharmacotherapy should be provided only by clinicians who are experienced in the use of antiobesity agents and aware of the potential for adverse reactions. We suggest bariatric surgery for adolescents with BMI above 50 kg/m(2), or BMI above 40 kg/m(2) with severe comorbidities in whom lifestyle modifications and/or pharmacotherapy have failed. Candidates for surgery and their families must be psychologically stable and capable of adhering to lifestyle modifications. Access to experienced surgeons and sophisticated multidisciplinary teams who assess the benefits and risks of surgery is obligatory. We emphasize the prevention of obesity by recommending breast-feeding of infants for at least 6 months and advocating that schools provide for 60 min of moderate to vigorous daily exercise in all grades. We suggest that clinicians educate children and parents through anticipatory guidance about healthy dietary and activity habits, and we advocate for restricting the availability of unhealthy food choices in schools, policies to ban advertising unhealthy food choices to children, and community redesign to maximize opportunities for safe walking and bike riding to school, athletic activities, and neighborhood shopping.


Assuntos
Obesidade , Complicações na Gravidez , Adulto , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Gravidez , Fármacos Antiobesidade/uso terapêutico , Cirurgia Bariátrica , Índice de Massa Corporal , Dieta , Medicina Baseada em Evidências , Estilo de Vida , Atividade Motora , Obesidade/diagnóstico , Obesidade/prevenção & controle , Complicações na Gravidez/diagnóstico , Complicações na Gravidez/dietoterapia , Complicações na Gravidez/tratamento farmacológico , Complicações na Gravidez/prevenção & controle , Apoio Social
14.
J Clin Endocrinol Metab ; 93(9): 3551-9, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18559922

RESUMO

CONTEXT: Mice deficient in prokineticin 2(PROK2) and prokineticin receptor2 (PROKR2) exhibit variable olfactory bulb dysgenesis and GnRH neuronal migration defects reminiscent of human GnRH deficiency. OBJECTIVES: We aimed to screen a large cohort of patients with Kallmann syndrome (KS) and normosmic idiopathic hypogonadotropic hypogonadism (IHH) for mutations in PROK2/PROKR2, evaluate their prevalence, define the genotype/phenotype relationship, and assess the functionality of these mutant alleles in vitro. DESIGN: Sequencing of the PROK2 and PROKR2 genes was performed in 170 KS patients and 154 nIHH. Mutations were examined using early growth response 1-luciferase assays in HEK 293 cells and aequorin assays in Chinese hamster ovary cells. RESULTS: Four heterozygous and one homozygous PROK2 mutation (p.A24P, p.C34Y, p.I50M, p.R73C, and p.I55fsX1) were identified in five probands. Four probands had KS and one nIHH, and all had absent puberty. Each mutant peptide impaired receptor signaling in vitro except the I50M. There were 11 patients who carried a heterozygous PROKR2 mutation (p.R85C, p.Y113H, p.V115M, p.R164Q, p.L173R, p.W178S, p.S188L, p.R248Q, p.V331M, and p.R357W). Among them, six had KS, four nIHH, and one KS proband carried both a PROKR2 (p.V115M) and PROK2 (p.A24P) mutation. Reproductive phenotypes ranged from absent to partial puberty to complete reversal of GnRH deficiency after discontinuation of therapy. All mutant alleles appear to decrease intracellular calcium mobilization; seven exhibited decreased MAPK signaling, and six displayed decreased receptor expression. Nonreproductive phenotypes included fibrous dysplasia, sleep disorder, synkinesia, and epilepsy. Finally, considerable variability was evident in family members with the same mutation, including asymptomatic carriers. CONCLUSION: Loss-of-function mutations in PROK2 and PROKR2 underlie both KS and nIHH.


Assuntos
Hormônios Gastrointestinais/genética , Hormônio Liberador de Gonadotropina/deficiência , Hipogonadismo/genética , Mutação de Sentido Incorreto , Neuropeptídeos/genética , Receptores Acoplados a Proteínas G/genética , Receptores de Peptídeos/genética , Adolescente , Equorina/genética , Animais , Células CHO , Cricetinae , Cricetulus , Análise Mutacional de DNA , Feminino , Frequência do Gene , Heterogeneidade Genética , Genótipo , Humanos , Síndrome de Kallmann/genética , Masculino , Modelos Biológicos , Linhagem , Transfecção
15.
J Pediatr Endocrinol Metab ; 21(3): 279-86, 2008 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-18540256

RESUMO

Dent disease, an X-linked recessive renal tubular disease, results from loss-of-function mutations in the CLCN5 chloride channel gene. The effects of Dent disease on growth have not been described. We report siblings who presented with proteinuria, calciuria, and phosphaturia and growth failure who responded to growth hormone (GH) treatment. Genotyping revealed a novel c.2179delG frameshift mutation at codon 727, exon 12 of the CLCNS gene. Two years after initial presentation, linear growth had slowed, and evaluation revealed isolated GH deficiency. GH therapy resulted in more than two-fold increases in height velocity and serum IGF-I levels. There was no net change in estimated glomerular filtration rate, proteinuria or calciuria in response to GH therapy, but there was a delayed improvement in phosphaturia. These cases provide insight into the effects of GH on growth and renal function in Dent disease. Furthermore, we have reported a novel CLCN5 mutation.


Assuntos
Transtornos do Crescimento/tratamento farmacológico , Hormônio do Crescimento Humano/uso terapêutico , Rim/metabolismo , Erros Inatos do Transporte Tubular Renal/tratamento farmacológico , Estatura , Cálcio/urina , Criança , Canais de Cloreto/genética , Mutação da Fase de Leitura/genética , Taxa de Filtração Glomerular , Transtornos do Crescimento/genética , Hormônio do Crescimento Humano/deficiência , Humanos , Hipofosfatemia Familiar/etiologia , Fator de Crescimento Insulin-Like I/metabolismo , Testes de Função Renal , Masculino , Proteinúria/etiologia , Erros Inatos do Transporte Tubular Renal/genética , Irmãos
16.
Pediatr Ann ; 47(1): e7-e11, 2018 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-29323690

RESUMO

Adrenarche is when a child's adrenal cortex starts to secrete adrenal androgen precursors. Dehydroepiandrosterone (DHEA) is the most abundant product of the adrenal cortex, and is a weak androgen agonist thought to be responsible for the clinical signs of pubarche by conversion to more potent androgens, testosterone, and dihydrotestosterone. DHEA's extra-adrenal sulfation product, dehydroepiandrosterone sulfate, is a stable marker for adrenal androgenic activity. Pubarche is the physical manifestation of androgenic hormone production, and includes the development of pubic and axillary hair, adult body odor, and acne. This stage is usually considered premature if it commences before age 8 years in girls or age 9 years in boys. Premature adrenarche is a diagnosis of exclusion, as true centrally mediated precocious puberty, congenital adrenal hyperplasia, exogenous androgen exposure, and androgen-secreting tumors must be ruled out. Premature adrenarche may be associated with a history of an infant who was small for gestational age at birth who then gained weight rapidly thereafter or became obese. In some instances, premature adrenarche may predict functional ovarian hyperandrogenism in adolescence. Management of premature adrenarche is largely aimed at observation, lifestyle adjustments for weight concerns, and monitoring for future possible persistent androgen excess and insulin resistance. [Pediatr Ann. 2018;47(1):e7-e11.].


Assuntos
Adrenarca , Puberdade Precoce , Criança , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Prognóstico , Puberdade Precoce/diagnóstico , Puberdade Precoce/etiologia , Puberdade Precoce/terapia
17.
J Clin Endocrinol Metab ; 103(1): 7-11, 2018 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-29029106

RESUMO

Context: Patients with 21-hydroxylase deficiency congenital adrenal hyperplasia (CAH) require lifelong treatment with glucocorticoids. In growing children, the drug of choice is hydrocortisone. Commercially available hydrocortisone tablets do not conform to very low doses prescribed to infants and toddlers, and compounded hydrocortisone is often dispensed to meet therapeutic needs. However, safety, efficacy, and uniformity of compounded products are not tested. We report a case of Cushing syndrome in a child with CAH who was inadvertently receiving excessive hydrocortisone in compounded form. Design: A 20-month-old girl with CAH developed growth deceleration, excessive weight for length, irritability, increased facial fat, plethora, and excess body hair while receiving hydrocortisone from a local compounding pharmacy. The signs and symptoms persisted despite decreasing hydrocortisone dose. Iatrogenic Cushing syndrome was suspected. The prescribed hydrocortisone capsules were sent for analysis to the Sports Medicine Research & Testing Laboratory, where testing revealed that each 1-mg hydrocortisone capsule contained five to 10 times the dose prescribed and listed on the label. Conclusion: Physicians must be aware that errors in compounded medications may lead to unanticipated adverse effects. Iatrogenic Cushing syndrome should be suspected in any child receiving compounded glucocorticoid treatment who develops growth arrest and excess weight gain.


Assuntos
Hiperplasia Suprarrenal Congênita/tratamento farmacológico , Síndrome de Cushing/induzido quimicamente , Hidrocortisona/efeitos adversos , Doença Iatrogênica/epidemiologia , Erros de Medicação/efeitos adversos , Anti-Inflamatórios/efeitos adversos , Feminino , Humanos , Lactente , Prognóstico
18.
J Clin Endocrinol Metab ; 103(11): 4097-4103, 2018 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-30272185

RESUMO

Background: Individuals with congenital adrenal hyperplasia (CAH) require glucocorticoid therapy to replace cortisol and to control androgen excess. We sought to evaluate the effects of glucocorticoid therapy on cardiovascular and metabolic outcomes in individuals with CAH. Methods: We searched bibliographical databases through January 2016 for studies evaluating cardiovascular risk factors in individuals with CAH treated with glucocorticoids compared with controls without CAH. We used a random-effects model to synthesize quantitative data. Results: We included 20 observational studies (14 longitudinal, six cross-sectional) with a moderate to high risk of bias. The average dose of glucocorticoids (in hydrocortisone equivalents) was 9 to 26.5 mg/m2/d. In the meta-analysis (416 patients), compared with controls without CAH, individuals with CAH had increased systolic blood pressure [weighted mean difference (WMD), 4.44 mm Hg; 95% CI, 3.26 to 5.63 mm Hg], diastolic blood pressure (WMD, 2.35 mm Hg; 95% CI, 0.49 to 4.20 mm Hg), homeostatic model assessment of insulin resistance (WMD, 0.49; 95% CI, 0.02 to 0.96), and carotid intima thickness (WMD, 0.08 mm; 95% CI, 0.01 to 0.15 mm). No statistically significant differences were noted in fasting blood glucose, insulin level, glucose, or insulin level after 2-hour glucose load or serum lipids. Data on cardiac events were sparse, and most of the literature focused on surrogate outcomes. Conclusion: Individuals with CAH demonstrate a high prevalence of cardiovascular and metabolic risk factors. The current evidence relies on surrogate outcomes. Long-term prospective studies are warranted to assess strategies for reducing cardiovascular risk in individuals with CAH.


Assuntos
Hiperplasia Suprarrenal Congênita/complicações , Doenças Cardiovasculares/diagnóstico , Sistema Cardiovascular/efeitos dos fármacos , Glucocorticoides/efeitos adversos , Síndrome Metabólica/diagnóstico , Hiperplasia Suprarrenal Congênita/tratamento farmacológico , Hiperplasia Suprarrenal Congênita/metabolismo , Hiperplasia Suprarrenal Congênita/fisiopatologia , Pressão Sanguínea/efeitos dos fármacos , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/fisiopatologia , Sistema Cardiovascular/fisiopatologia , Espessura Intima-Media Carotídea , Endocrinologia/métodos , Endocrinologia/normas , Humanos , Síndrome Metabólica/epidemiologia , Síndrome Metabólica/etiologia , Síndrome Metabólica/fisiopatologia , Guias de Prática Clínica como Assunto , Prevalência , Fatores de Risco
19.
Horm Res Paediatr ; 90(6): 368-380, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30783028

RESUMO

BACKGROUND/AIMS: Utilization of a psychosocial screener to identify families affected by a disorder/difference of sex development (DSD) and at risk for adjustment challenges may facilitate efficient use of team resources to optimize care. The Psychosocial Assessment Tool (PAT) has been used in other pediatric conditions. The current study explored the reliability and validity of the PAT (modified for use within the DSD population; PAT-DSD). METHODS: Participants were 197 families enrolled in the DSD-Translational Research Network (DSD-TRN) who completed a PAT-DSD during a DSD clinic visit. Psychosocial data were extracted from the DSD-TRN clinical registry. Internal reliability of the PAT-DSD was tested using the Kuder-Richardson-20 coefficient. Validity was examined by exploring the correlation of the PAT-DSD with other measures of caregiver distress and child emotional-behavioral functioning. RESULTS: One-third of families demonstrated psychosocial risk (27.9% "Targeted" and 6.1% "Clinical" level of risk). Internal reliability of the PAT-DSD Total score was high (α = 0.86); 4 of 8 subscales met acceptable internal reliability. A priori predicted relationships between the PAT-DSD and other psychosocial measures were supported. The PAT-DSD Total score related to measures of caregiver distress (r = 0.40, p < 0.001) and to both caregiver-reported and patient self-reported behavioral problems (r = 0.61, p < 0.00; r = 0.37, p < 0.05). CONCLUSIONS: This study provides evidence for the reliability and validity of the PAT-DSD. Given variability in the internal reliability across subscales, this measure is best used to screen for overall family risk, rather than to assess specific psychosocial concerns.


Assuntos
Transtornos do Desenvolvimento Sexual/psicologia , Sistema de Registros , Desenvolvimento Sexual , Criança , Transtornos do Desenvolvimento Sexual/patologia , Transtornos do Desenvolvimento Sexual/fisiopatologia , Feminino , Humanos , Masculino , Psicometria , Reprodutibilidade dos Testes , Medição de Risco
20.
J Clin Endocrinol Metab ; 103(11): 4089-4096, 2018 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-30272250

RESUMO

Background: Females with congenital adrenal hyperplasia (CAH) and atypical genitalia often undergo complex surgeries; however, their outcomes remain largely uncertain. Methods: We searched several databases through 8 March 2016 for studies evaluating genital reconstructive surgery in females with CAH. Reviewers working independently and in duplicate selected and appraised the studies. Results: We included 29 observational studies (1178 patients, mean age at surgery, 2.7 ± 4.7 years; mostly classic CAH). After an average follow-up of 10.3 years, most patients who had undergone surgery had a female gender identity (88.7%) and were heterosexual (76.2%). Females who underwent surgery reported a sexual function score of 25.13 using the Female Sexual Function Index (maximum score, 36). Many patients continued to complain of substantial impairment of sensitivity in the clitoris, vaginal penetration difficulties, and low intercourse frequency. Most patients were sexually active, although only 48% reported comfortable intercourse. Most patients (79.4%) and treating health care professionals (71.8%) were satisfied with the surgical outcomes. Vaginal stenosis was common (27%), and other surgical complications, such as fistulas, urinary incontinence, and urinary tract infections, were less common. Data on quality of life were sparse and inconclusive. Conclusion: The long-term follow-up of females with CAH who had undergone urogenital reconstructive surgery shows variable sexual function. Most patients were sexually active and satisfied with the surgical outcomes; however, some patients still complained of impairment in sexual experience and satisfaction. The certainty in the available evidence is very low.


Assuntos
Hiperplasia Suprarrenal Congênita/cirurgia , Procedimentos Cirúrgicos em Ginecologia/métodos , Procedimentos de Cirurgia Plástica/métodos , Qualidade de Vida , Comportamento Sexual/fisiologia , Hiperplasia Suprarrenal Congênita/fisiopatologia , Hiperplasia Suprarrenal Congênita/psicologia , Feminino , Genitália Feminina/anormalidades , Genitália Feminina/fisiopatologia , Genitália Feminina/cirurgia , Procedimentos Cirúrgicos em Ginecologia/efeitos adversos , Procedimentos Cirúrgicos em Ginecologia/normas , Humanos , Satisfação do Paciente , Guias de Prática Clínica como Assunto , Procedimentos de Cirurgia Plástica/efeitos adversos , Procedimentos de Cirurgia Plástica/normas , Resultado do Tratamento
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