ABSTRACT
More than two million Americans live in nursing homes and other long-term care facilities. Available research suggests that the majority of older nursing home residents, including those with some degree of cognitive impairment, place significant value upon a variety of sexual activities. With nearly half of all residents suffering from dementia, psychologists and other mental health professionals often face significant challenges in the assessment of their patients' sexual consent capacity. A primary ethical issue is to balance an individual resident's rights to autonomy and privacy with a facility's need to protect residents from harm. Sexual consent capacity functions on a continuum across time and behavior. It also cannot be predetermined by proxy, in which an individual prepares legal documents ahead of time to identify a surrogate decision maker; sexual consent capacity must be determined by information obtained in the present moment. In this paper, an approach to the assessment of residents' sexual consent capacity, encompassing knowledge, reasoning, and voluntariness, along with a brief overview of sexual activity among long-term care residents, will be presented. A case example is offered to illustrate complex clinical dilemmas involving staff attitudes, residents' rights, and family dynamics.
Subject(s)
Homes for the Aged/ethics , Mental Competency , Nursing Homes/ethics , Sexual Behavior/ethics , Aged , Decision Making , Family/psychology , Female , Geriatric Assessment , Humans , Male , Personal Autonomy , Sexual Behavior/psychologyABSTRACT
Restrictive eating disorders (ED) are increasing and represent a serious risk to the health of adolescent females. Restrictive ED in youth are often treated through aggressive short-term refeeding. Although evidence supports that this intervention is the "gold standard" for improving ED outcomes in youth, little research has specifically probed appetite and meal-related responses to this type of intensive, short-term refeeding in newly diagnosed individuals. Information about appetite and meal-related dysfunction could provide valuable insights regarding treatment-interfering features of ED in both acute inpatient and longer-term outpatient treatment. The purpose of this study was to evaluate the hunger, fullness, olfactory, and gustatory responses of adolescents with newly-diagnosed restrictive ED and to probe how and when these responses are altered by refeeding. Using a quasi-experimental ecologically valid methodology, this study described and compared profiles of hunger, fullness, olfactory, and gustatory responses in adolescent females (n = 15) with newly diagnosed restrictive ED at hospital admission (i.e., severe malnutrition) and after medical refeeding, in comparison to healthy controls (n = 15). Results showed that newly diagnosed (i.e., malnourished) adolescents with ED showed significantly different meal-related experiences than controls. Refeeding improved some of these differences, but not all. Following refeeding, females with ED continued to show lower hunger, greater fullness, and lower pleasantness of smell ratings compared to controls. Unpleasantness of taste ratings maladaptively increased, such that females who were re-fed reported more aversive scents than pre-treatment. Profiles of meal-related responses were also identified and compared between groups. The applicability of these findings are discussed within the context of critical periods of change during refeeding treatment and potentially promising intervention targets that might enhance treatment outcomes for adolescents with newly onset, restrictive ED.
Subject(s)
Adolescent Nutritional Physiological Phenomena , Appetite Regulation , Feeding and Eating Disorders/diet therapy , Meals , Satiety Response , Adolescent , Adult , Anorexia Nervosa/diet therapy , Anorexia Nervosa/physiopathology , Anorexia Nervosa/psychology , Body Mass Index , Breakfast/psychology , Feeding and Eating Disorders/physiopathology , Feeding and Eating Disorders/psychology , Female , Hospitals, Pediatric , Humans , Hunger , Meals/psychology , Odorants , Ohio , Pleasure , Psychiatric Status Rating Scales , Severe Acute Malnutrition/etiology , Severe Acute Malnutrition/prevention & control , Severity of Illness Index , Thinness/diet therapy , Thinness/psychology , Weight Gain , Young AdultABSTRACT
OBJECTIVE: This study examined the association between depressive and menstrual symptoms in adolescent girls in a 3-year longitudinal study. It was hypothesized that menstrual symptoms would increase in early adolescence and decrease in later adolescence, that girls with greater depressive symptoms would report greater menstrual symptoms, and that effects would persist after adjusting for general somatic complaints. METHODS: A community sample of girls (n = 262) enrolled in an observational study by age cohort (11, 13, 15, 17 years) completed three annual visits. At each time point, girls completed the Menstrual Symptom Questionnaire, Children's Depression Inventory, and the Youth Self Report to assess general somatic complaints. RESULTS: Menstrual symptoms increased significantly across adolescence (p = .006) and began to plateau in later adolescence (p = .020). Depressive symptoms at study entry were significantly associated with menstrual symptoms (p < .001). When general somatic complaints were included in the models, the effect of depressive symptoms on menstrual symptoms remained significant for the sum score (p = .015) and the menstrual somatic symptoms subscale (p = .001). After adjusting for somatic complaints, initial report of depressive symptoms predicted change in menstrual symptoms only for girls with the lowest menstrual symptoms sum score (p = .025). Initial report of somatic complaints predicted change in menstrual symptoms (p = .020). CONCLUSIONS: Girls with higher depressive symptoms and higher somatic complaints are at greater risk for experiencing menstrual symptoms and increasing symptoms across adolescence, with a heightened vulnerability for girls with lower baseline menstrual symptoms.
Subject(s)
Depression/complications , Dysmenorrhea/psychology , Adolescent , Age Factors , Child , Depression/psychology , Dysmenorrhea/complications , Female , Humans , Longitudinal Studies , Psychiatric Status Rating Scales , Risk Factors , Surveys and QuestionnairesABSTRACT
Surgical options for the treatment of adolescent obesity have been gaining popularity. Adolescent patients present a particular challenge to clinicians, secondary to age-related issues, revolving around both mental and physical growth. These age-related issues require a unique approach to nutritional intervention for adolescents undergoing bariatric surgery as opposed to standardized approaches for adults. Despite the increasing numbers of adolescents undergoing obesity surgery, evidence-based nutritional guidelines have yet to be published. The goal of this document is to provide the clinician with recommendations on how to assess, educate, nourish, and monitor the adolescent who has undergone obesity surgery. A multidisciplinary panel composed of 3 pediatric gastroenterologists, 1 psychologist, and 3 registered dietitians from the Nutrition Committee for the North American Society of Pediatric Gastroenterology, Hepatology, and Nutrition and National Association of Children's Hospitals and Related Institutions, with experience in nutrition and adolescent weight loss surgery, reviewed the medical literature for evidence-based practice for nutritional strategies for patients undergoing bariatric surgery. In addition to this group, an adolescent medicine physician was consulted for matters related to reproductive health. The present article presents a consensus of recommendations based on a review of the literature. In areas for which there was a lack of evidence to support the recommendations, best-practice guidelines were used. The present article provides the clinician with an overview of the nutritional concerns for adolescent patients undergoing obesity surgery. These guidelines address the preoperative educational pathway, the postoperative diet progression, recognition of disordered eating, guidelines for female reproductive issues, and assistance for the adolescent in a school/college environment.
Subject(s)
Bariatric Surgery , Diet , Dietetics/methods , Nutritional Requirements , Obesity, Morbid , Adolescent , Consensus , Feeding and Eating Disorders , Female , Health Education , Humans , North America , Obesity, Morbid/surgery , Pregnancy , Reproductive Health , Societies, MedicalABSTRACT
BACKGROUND AND OBJECTIVES: Intimate partner violence (IPV) has been linked with poor health among young transgender adults, and cisgender lesbian, gay, bisexual (LGB), and heterosexual adults aged 50 years and older. The objective was to examine lifetime prevalence of IPV and its association with health, among transgender adults aged 50 and older. Consistent with the Gender Minority Stress Framework, any IPV was hypothesized to be associated with worse health. RESEARCH DESIGN AND METHODS: Responses from 3,462, transgender adults aged 50 and older from the 2015 U.S. Transgender Survey were assessed for lifetime IPV and type. Logistic regression analyses, adjusted for demographic characteristics, examined the association between any IPV and substance use, and mental and general health measures. RESULTS: 57% of respondents reported any lifetime IPV, including transgender-specific (41%), physical (36%), psychological (29%), severe physical (24%), stalking (12%), and sexual (10%) abuse. Given any, compared to no, experience of IPV, the odds of having a disability (adjusted odds ratio [AOR] = 1.21, confidence interval [CI] = 1.00-1.46) and rating current health more negatively (AOR = 1.17, CI = 1.08-1.26); smoking (AOR = 1.31, CI = 1.08-1.58) and qualifying for screening for serious mental illness (AOR = 1.32, CI = 1.04-1.66) within the last month; and ever using drugs (AOR = 1.42, CI = 1.22-1.65) and attempting suicide (AOR = 1.98, CI = 1.66-2.46) were significantly higher; only binge drinking was unrelated to IPV. DISCUSSION AND IMPLICATIONS: More than half of the respondents experienced IPV, with trans-specific IPV reported most commonly. Lifetime prevalence of any IPV was significantly associated with worse health. Recommendations include health surveillance that recognizes gender identity, and longitudinal study and routine screening of IPV, including trans-specific abuse, among transgender adults aged 50 and older.
Subject(s)
Intimate Partner Violence , Transgender Persons , Aged , Female , Gender Identity , Humans , Longitudinal Studies , Male , Middle Aged , Prevalence , Risk Factors , Transgender Persons/psychologyABSTRACT
OBJECTIVES: Pediatric obesity is increasing at epidemic rates in industrialized nations. It is recommended that pediatricians screen all children annually with the use of body mass index (BMI). However, it is unclear whether this recommendation is followed. This study sought to (1) determine the proportion of children screened for obesity with BMI, and (2) test whether attending physicians are more likely than resident physicians to document and plot BMI. METHODS: We conducted a systematic review of medical records in an urban academic pediatric practice. Participants were children aged 5 to 11 years presenting for health care in 2004. We measured the proportion of subjects with documented and plotted BMI and compared results for attending and resident physicians. We used logistic regression analysis to determine factors associated with documentation of BMI. RESULTS: Of 397 medical records reviewed, 59.7% contained the 2000 Centers for Disease Control and Prevention growth curve with BMI for age; 5.5% documented BMI, and 4.3% plotted BMI. Resident physicians were more likely to document (13.0% vs. 3.0%, p = 0.0008) and plot (9.0% vs. 2.7%, p = 0.0260) BMI compared with attending physicians. Children with a BMI--95% for age were more likely to have their BMI documented (odds ratio [OR] = 10.7, 95% confidence interval [CI] 3.7, 31.5) and plotted (OR = 7.1, 95% CI 2.3, 21.6). CONCLUSION: We found the use of BMI to screen for childhood obesity very poor in this academic pediatric practice. Resident physicians were more likely to document and plot BMI than attending physicians.
Subject(s)
Body Mass Index , Health Personnel/education , Mass Screening/statistics & numerical data , Obesity/diagnosis , Pediatrics , Child , Child, Preschool , Female , Humans , Logistic Models , Male , Medical Audit , Obesity/therapy , Pediatrics/education , Pediatrics/statistics & numerical data , Retrospective StudiesABSTRACT
We know little about custodial grandparents of children with autism spectrum disorder (ASD) who offer a vital social safety net. 117 custodial grandparents of children with ASD from 37 states completed an online survey with open-ended questions about their "greatest challenges and joys" as grandparent. Grounded theory analysis revealed four categories of experience (Issues with Adult Children, Caregiving Burden, Coping, & Wisdom) explained by 15 themes. Grandparents' stressors encompassed custody issues, ASD problem behaviors like tantrums and eloping, insufficient ASD services, financial burden, 24/7 caregiving demands, social isolation, and fears for the future. Grandparents' coping included celebrations of progress, unconditional love, faith, and a positive focus. Grandparents' wisdom included patience and insight. Recommendations to support these caregivers are provided.
Subject(s)
Autism Spectrum Disorder/psychology , Caregivers/psychology , Grandparents/psychology , Adaptation, Psychological , Aged , Child , Female , Humans , Male , Middle AgedABSTRACT
Limited information is available regarding the first person perspective of grandparents of children with Autism Spectrum Disorders (ASD). In the present study, 1870 grandparents of a child with ASD participated in a nationwide, online, anonymous, 30-minute survey and responded to open-ended questions including their "greatest challenges and greatest joys" as the grandparent of a child on the autism spectrum. A grounded theory approach to qualitative analysis revealed four overarching categories: a Desire for Connection, Barriers to Care, Celebration of Progress, and Personal Reactions. Despite the presence of significant challenges grandparents often experienced positivity in their role, and engaged in radical acceptance of their grandchild as well as transformative insight and advocacy. Specific recommendations are offered to help address grandparents' needs and capitalize upon their resilience.
Subject(s)
Autism Spectrum Disorder/psychology , Grandparents/psychology , Health Services Needs and Demand , Aged , Child , Female , Grounded Theory , Humans , Intergenerational Relations , Male , Middle Aged , Qualitative Research , Surveys and QuestionnairesABSTRACT
OBJECTIVE: Publication of the Women's Health Initiative (WHI) study has changed our understanding on the effects of hormone replacement therapy. This study was designed to evaluate patterns of antiosteoporosis medication (AOM) use in a Medicaid population before and after the release of the WHI study results. METHODS: A descriptive time series analysis was conducted among women 50 years of age and older who were enrolled in the Pennsylvania Medicaid program from December 1, 2001, through December 31, 2002. All AOMs were identified, including estrogens, bisphosphonates, selective estrogen receptor modulators (SERMs), and calcitonin. The monthly prevalence of each AOM and drug class was estimated. Comparisons between pre-WHI (December 1, 2001-July 30, 2002) and post-WHI (August 1, 2002-December 31, 2002) study periods were made for overall AOM use by AOM drug class as well as by recipient characteristics. RESULTS: The overall prevalence of AOM did not change between pre-WHI and post-WHI study publication. However, there were significant changes in the prevalence of certain AOM drug classes. Estrogen use decreased significantly after the WHI study release for all age and racial groups. The prevalence for bisphosphonates and SERM increased significantly in the post-WHI period. CONCLUSIONS: The WHI study influenced patterns of use of all types of AOM, decreasing estrogen and increasing nonestrogen use among postmenopausal women in a Medicaid program. These results suggest that the WHI study affected patterns of use of bone protective pharmacotherapy, with a shift in bone protection therapy use from estrogen to nonestrogen AOMs.
Subject(s)
Alendronate/therapeutic use , Bone Density Conservation Agents/therapeutic use , Drug Utilization/statistics & numerical data , Medicaid , Osteoporosis, Postmenopausal/drug therapy , Outcome Assessment, Health Care , Practice Patterns, Physicians'/statistics & numerical data , Women's Health Services/standards , Aged , Aged, 80 and over , Bone Density Conservation Agents/classification , Calcitonin/therapeutic use , Cohort Studies , Diphosphonates/therapeutic use , Estrogen Receptor Modulators/therapeutic use , Estrogens/therapeutic use , Etidronic Acid/analogs & derivatives , Etidronic Acid/therapeutic use , Female , Humans , Middle Aged , Osteoporosis, Postmenopausal/epidemiology , Pennsylvania , Risedronic AcidABSTRACT
Research findings indicate that intensive behavior therapy (e.g., applied behavioral analysis, or ABA) represents an effective treatment for autistic spectrum disorders. Unfortunately, children with autism represent an underserved patient population. Parents often make treatment decisions with insufficient information and report problems in establishing and maintaining treatment programs. This practice review asserts that psychologists, including those without professional certification or coursework in ABA, are in a unique position to assist affected children and their families. Psychologists can provide critical information about evidence-based treatment; offer assistance in overcoming barriers to intensive treatment, including personnel selection; and provide ongoing support to family members. Case examples also illustrate how psychologists can help families address specific barriers to intensive treatment. (PsycINFO Database Record (c) 2010 APA, all rights reserved).
ABSTRACT
This longitudinal study examines links among adolescent internalizing and externalizing symptoms, the prenatal environment (e.g., nicotine exposure) and pre/perinatal maternal health, and cardiovascular risk factors. Girls (N=262) ages 11-17 reported internalizing and externalizing behaviors and mothers reported about the prenatal environment and maternal health during and 3 months post-pregnancy. Adolescent cardiovascular risk included adiposity, smoking, blood pressure, and salivary C-reactive protein. Internalizing symptoms mediated relations between prenatal exposures/maternal health and adiposity; externalizing symptoms mediated relations between prenatal exposures and adolescent smoking. Healthcare providers who attend to internalizing and externalizing symptoms in girls may ultimately influence cardiovascular health, especially among those with pre/perinatal risk factors.
ABSTRACT
BACKGROUND: Observational studies suggest that hormone replacement therapy (HRT) reduces women's risk of cardiovascular disease (CVD). However the Women's Health Initiative (WHI) HRT arm was stopped early because of increased risk of CVD, stroke, pulmonary embolism, and breast cancer. Evaluating HRT-prescribing patterns in relation to the release of the WHI will help determine if these study results have influenced the use of HRT. METHODS: This is a descriptive time series analysis to primarily evaluate utilization trends of HRT in women > or =50 years enrolled in the Pennsylvania Medicaid Program. HRT was categorized as follows: conjugated equine estrogen (CEE) plus medroxyprogesterone acetate (MPA), CEE only, and other estrogens/progesterone combinations. RESULTS: The overall prevalence of HRT decreased significantly post-WHI study release for all age and racial groups. The prevalence of CEE plus MPA decreased throughout the study; however, the prevalence of HRT declined at a faster rate after the WHI study release among women in their 50s and 60s compared with women in their 70s and 80s. There was a statistically significant reduction in all types of HRT use. CONCLUSIONS: The WHI influenced all types of HRT use among postmenopausal women in a Medicaid program. Administrative claims data can be a useful tool for monitoring an immediate impact of national guidelines or a national level outcomes trial.
Subject(s)
Estrogen Replacement Therapy/statistics & numerical data , Estrogens, Conjugated (USP)/administration & dosage , Medroxyprogesterone Acetate/administration & dosage , Women's Health , Aged , Attitude to Health , Estrogen Replacement Therapy/adverse effects , Female , Humans , Linear Models , Medicaid , Medroxyprogesterone Acetate/adverse effects , Middle Aged , Pennsylvania/epidemiology , Prevalence , Randomized Controlled Trials as Topic , Risk Factors , Time FactorsABSTRACT
OBJECTIVE: To determine the prevalence of metabolic syndrome (MetSyn) and Framingham cardiovascular disease (CVD) risk in white and black adolescents and adult women with polycystic ovary syndrome (PCOS) compared with controls. DESIGN: Retrospective cohort study. SETTING: Center for PCOS. PATIENT(S): Subjects with PCOS with data on race and cardiometabolic risk (n = 519). Controls were age and race matched from the National Health and Nutrition Examination Survey (NHANES) population (1999-2006). INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): MetSyn, coronary heart disease risk, and general CVD risk. RESULT(S): Black adolescents and young adults with PCOS had an increased prevalence of MetSyn compared with their white counterparts (adolescents relative risk 2.65 [95% confidence interval 1.29-5.4], adults relative risk 1.44 [95% confidence interval 1.21-2.6]). In contrast, there was no difference in risk of MetSyn between black and white adolescents and adult women in the NHANES dataset. After controlling for age and body mass index, black women with PCOS had a significantly increased prevalence of low high-density lipoprotein and high glucose. The general CVD risk was significantly increased in black adults with PCOS. CONCLUSION(S): This is the first study to comprehensively demonstrate increased risk of MetSyn in both black adolescents and adult women with PCOS compared with white subjects with PCOS. This racial disparity was not present in the NHANES controls. Longitudinal studies are needed to assess the independent impact of PCOS and race on CVD risk in women.
Subject(s)
Black or African American/ethnology , Cardiovascular Diseases/ethnology , Metabolic Syndrome/ethnology , Polycystic Ovary Syndrome/ethnology , White People/ethnology , Adolescent , Adult , Cardiovascular Diseases/diagnosis , Child , Cross-Sectional Studies , Female , Humans , Metabolic Syndrome/diagnosis , Middle Aged , Polycystic Ovary Syndrome/diagnosis , Retrospective Studies , Risk Factors , Young AdultABSTRACT
CONTEXT: Women with polycystic ovary syndrome (PCOS) have a high prevalence of cardiovascular disease (CVD) risk factors including dyslipidemia. Lipoproteins are heterogeneous, and measurement of serum lipids provides only the size of the pool and does not predict their function or composition. Recently, high-density lipoprotein cholesterol (HDL-C) function, as determined by cholesterol efflux capacity from macrophages, has been shown to be an independent predictor of subclinical CVD. OBJECTIVE: The aim of the study was to comprehensively evaluate lipoprotein profile including lipid particle size and number and cholesterol efflux capacity in PCOS to better define CVD risk. DESIGN AND SETTING: A case control study was performed at an academic PCOS center. PATIENTS: Women with PCOS (n = 124) and geographically matched controls (n = 67) were included in the study. MAIN OUTCOME MEASURES: The primary outcome was to measure HDL-C efflux capacity by an ex vivo system involving the incubation of macrophages with apolipoprotein (Apo) B-depleted serum from subjects, and the secondary outcome was to measure lipid particle size and number using nuclear magnetic resonance spectroscopy. RESULTS: Women with PCOS had significantly higher body mass index and blood pressure but similar HDL-C and low-density lipoprotein cholesterol levels compared to controls. The mean ApoA1 levels were lower, and the ApoB/ApoA1 ratio was higher in PCOS subjects compared to controls (P < .01). There were no differences in ApoB levels. Women with PCOS had an 7% decrease in normalized cholesterol efflux capacity compared to controls (P < .003). Cholesterol efflux capacity in PCOS correlated with body mass index, ApoA1, HDL-C, and the presence of metabolic syndrome. In a multivariable regression model, PCOS was significantly associated with diminished cholesterol efflux. PCOS was also associated with an atherogenic profile including an increase in large very low-density lipoprotein particles, very low-density lipoprotein (VLDL) size, and small low-density lipoprotein cholesterol particles (P < .01). CONCLUSIONS: Our novel findings of decreased cholesterol efflux and an atherogenic lipid particle number and size pattern in women with PCOS, independent of obesity, further substantiate the increased risk of CVD in this population.
Subject(s)
Atherosclerosis/blood , Cholesterol/blood , Dyslipidemias/blood , Lipids/blood , Polycystic Ovary Syndrome/blood , Adolescent , Adult , Atherosclerosis/complications , Case-Control Studies , Cholesterol, HDL/blood , Cholesterol, LDL/blood , Dyslipidemias/complications , Female , Humans , Middle Aged , Polycystic Ovary Syndrome/complicationsABSTRACT
STUDY OBJECTIVE: Evaluate for differences in the management of adolescents with polycystic ovarian syndrome (PCOS) across 3 pediatric specialties. DESIGN: Retrospective review of medical records. SETTING: Academic children's hospital. PARTICIPANTS: 181 adolescents seen between July 2008 and June 2010 by providers in Pediatric Endocrinology (PEndo), Adolescent Medicine (AMed), or Pediatric and Adolescent Gynecology (PGyn) identified via billing data (ICD-9 code for PCOS, 256.4). INTERVENTIONS: None. MAIN OUTCOME MEASURES: (1) Percentage of adolescents with a billing diagnosis of PCOS who met diagnostic criteria; (2) Percentage of individuals screened for comorbidities and differences across specialties; (3) Differences in treatment recommendations across specialties; (4) Factors associated with recommendation for metformin and hormonal contraceptives. RESULTS: Thirteen percent of PEndo patients did not meet diagnostic criteria for PCOS; 20% of AMed and PGyn patients did not meet criteria. There were significant differences in rates of screening for obesity, insulin resistance, and Type 2 diabetes. There were significant differences in treatment recommendations for lifestyle changes, metformin, and anti-androgen therapy across specialties. Specialty and obesity were significant predictors of metformin recommendation; specifically PEndo predicted metformin recommendation. PGyn and AMed specialties predicted hormonal contraceptive recommendation. CONCLUSIONS: The variability observed among specialties may be due to differences in training, accounting for a range of comfort with aspects of PCOS. Formulation of consensus guidelines for diagnosis and management of PCOS are needed, along with broad educational efforts. By correctly diagnosing, screening for comorbidities, and managing PCOS appropriately during adolescence, providers may reduce the risk for long-term consequences.
Subject(s)
Polycystic Ovary Syndrome/therapy , Practice Patterns, Physicians' , Adolescent , Adolescent Medicine , Androgen Antagonists/therapeutic use , Contraceptives, Oral, Hormonal/therapeutic use , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/diagnosis , Diabetes Mellitus, Type 2/drug therapy , Endocrinology , Female , Gynecology , Humans , Hypoglycemic Agents/therapeutic use , Insulin Resistance , Life Style , Metformin/therapeutic use , Obesity/complications , Obesity/diagnosis , Polycystic Ovary Syndrome/complications , Retrospective StudiesABSTRACT
STUDY OBJECTIVE: To examine whether the known association between early pubertal breast maturation and insulin sensitivity (SI) is mediated by adiposity. DESIGN: Cross-sectional analyses. SETTING: Observational study examining the roles of environment, diet, and obesity on puberty. PARTICIPANTS: 379 girls with a mean age, 7.03 years; 62% were white and 29% black. MAIN OUTCOME MEASURES: Pubertal development was assessed via physical examination and adiposity by body mass index Z score (BMI Z) and waist-to-height ratio. Fasting blood samples were obtained for insulin and glucose concentrations. SI was calculated with the quantitative insulin sensitivity check index (QUICKI). Analysis of variance and Sobel's test was used to assess mediation. RESULTS: Fifty-five girls were pubertal (Tanner 2 breast). Breast maturation was inversely associated with SI (P = .005) and positively associated with BMI Z (P < .001) and waist-to-height ratio (P < .001). The effect of breast maturation on SI was no longer significant (P = .41) after adjusting for the effect of BMI Z, which remained significant (P < .001). Similar results were obtained when waist-to-height ratio replaced BMI Z in the models. Mediation analyses demonstrated that 75% of the association between breast maturation and SI is mediated by adiposity. CONCLUSIONS: In girls, decreased SI during early puberty is largely mediated by total and visceral adiposity.
Subject(s)
Adiposity/physiology , Insulin Resistance/physiology , Obesity/physiopathology , Puberty, Precocious/physiopathology , Anthropometry , Child , Cross-Sectional Studies , Female , HumansABSTRACT
Stress and stress-related concomitants, including hypothalamic-pituitary-adrenal (HPA) axis activation, are implicated in obesity and its attendant comorbidities. Little is known about this relationship in adolescents. To begin to address this important knowledge gap, we studied HPA axis activity in 262 healthy adolescent girls aged 11, 13, 15, and 17 years. We hypothesized that obesity would be correlated with increased HPA axis activity and reactivity. Measures of HPA axis activity included 3 blood samples obtained midday (between 1:00 and 2:00 pm) over the course of 40 minutes; overnight urine free cortisol; and cortisol levels 0, 20, and 40 minutes after venipuncture (cortisol reactivity). Measures of adiposity included body mass index (BMI), BMI z score (BMI-Z), percentage body fat, and fat distribution (central adiposity) assessed by dual-energy x-ray absorptiometry. Daytime levels of serum cortisol were inversely associated with BMI-Z and central adiposity (P < .05). The urine free cortisol excretion rate was positively correlated with BMI, BMI-Z, and central adiposity. There was blunting of cortisol response to venipuncture with increasing adiposity. Our results suggest that there may be reduced cortisol levels during the day and increased levels at night with increasing degree of adiposity. This study provides preliminary findings indicating an alteration of the circadian rhythm of cortisol with obesity. We conclude that obesity is associated with altered HPA activity in adolescent girls. The clinical implications of our findings require further investigation.
Subject(s)
Hypothalamo-Hypophyseal System/physiopathology , Obesity/physiopathology , Pituitary-Adrenal System/physiopathology , Absorptiometry, Photon , Adiposity/physiology , Adolescent , Anthropometry , Area Under Curve , Body Composition/physiology , Body Mass Index , Breast/growth & development , Child , Female , Humans , Hydrocortisone/blood , Hydrocortisone/urine , Longitudinal Studies , Menarche , Overweight/physiopathology , Radioimmunoassay , Socioeconomic FactorsABSTRACT
Adolescent sexual maturation is staged using Tanner criteria assessed by clinicians, parents, or adolescents. The physiology of sexual maturation is driven by gonadal hormones. We investigate Tanner stage progression as a function of increasing gonadal hormone concentration and compare performances of different raters. Fifty-six boys (mean age, 12.7±1.3 years) and 52 girls (mean age, 12.0±1.6 years) were seen at baseline, 6, and 12 months. Estradiol and testosterone concentrations were determined from 3 morning serum samples and Tanner stage by three different raters (clinician, parent, adolescent). Results confirm that Tanner criteria reflect gonadal hormone concentrations, and clinician rating provides optimal assessment. Detailed insight about the strengths and limitations of different raters is provided, augmenting the scientific understanding of pubertal development.
ABSTRACT
The discovery of ghrelin and its role in human metabolism has promoted significant research and advances in the study of obesity and other weight-related disorders. Ghrelin is relevant to many disorders of metabolism and weight such as obesity, cachexia, Prader-Willi Syndrome (PWS), and Anorexia Nervosa (AN), and its role in the pathophysiology differs. The changes observed in ghrelin physiology in these disorders shed light on the overall role of ghrelin in human metabolism and growth. The purpose of this review is to summarize the existing literature on ghrelin and some disorders of metabolism and growth. The disorders that will be discussed include obesity, cachexia, PWS, and AN. Within each disorder we will review relevant ghrelin physiology, recent studies, and potential modes of intervention with ghrelin analogues.
Subject(s)
Body Weight/physiology , Ghrelin/metabolism , Animals , Anorexia Nervosa/genetics , Anorexia Nervosa/metabolism , Body Weight/genetics , Cachexia/genetics , Cachexia/metabolism , Ghrelin/genetics , Humans , Obesity/genetics , Obesity/metabolism , Prader-Willi Syndrome/genetics , Prader-Willi Syndrome/metabolismABSTRACT
PURPOSE: To examine separate mediational models linking (a) menarcheal status or (b) pubertal timing to internalizing and externalizing problems through competence. METHOD: This study involved cross-sectional analyses of 262 adolescent girls (age: 11-17 years; mean = 14.93, standard deviation = 2.17) enrolled in a longitudinal study examining the association of psychological functioning and smoking with reproductive and bone health. Measures of menarcheal status (pre/post), pubertal timing (early, on-time, or late), internalizing and externalizing behavior, and perceived competence (parent and adolescent report) were obtained. Structural equation modeling was used for analyses. RESULTS: Perceived competence was found to fully mediate the association between menarcheal status and parent report of internalizing and externalizing problems. For adolescent report, there was a full mediation effect for internalizing problems but a partial mediation effect for externalizing problems. Being menarcheal was related to lower competence, which was in turn related to higher internalizing and externalizing problems. Models including pubertal timing were not significant. CONCLUSIONS: Perceived competence is important in understanding the associations between menarcheal status and internalizing and externalizing problems. Interventions targeting competence, particularly in postmenarcheal girls, may reduce or prevent problem behaviors.