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1.
J Endocrinol Invest ; 44(5): 995-1000, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-32839937

RESUMEN

PURPOSE: During adolescence, PCOS features are supposed to be in evolution. Because of this, the diagnosis of PCOS in adolescence is often unclear and few studies have compared adolescent and adult PCOS phenotype distribution and features. The aim is to compare phenotypes in adolescents and young adults with PCOS. METHODS: 109 girls aged from 13 to 19 years were retrospectively studied. All patients had a gynecological age > 2 years. 63 patients were adolescents (3-5 years beyond menarche) while 46 patients were young adults (6-9 years beyond menarche). Diagnosis of different PCOS phenotypes (A, B, C, D) was made according to the Rotterdam criteria. Clinical data (menstrual cycles, BMI, presence of hirsutism), androgen circulating levels (total testosterone, androstenedione, dehydroepiandrosterone sulphate) and ovarian morphology by ultrasound were assessed. RESULTS: 109 patients presented PCOS according to the Rotterdam criteria. Phenotype A was by far the most common phenotype (73.4%) followed by phenotype B (21.1%). Only few patients had phenotype C (4.6%) or phenotype D (0.9%). When patients were divided in two groups (adolescent and young adult patients), no significant difference in prevalence and features of the different phenotypes was observed. CONCLUSION: In this cohort of adolescent and young adult women with PCOS, the progression of age does not change the prevalence and the features of main PCOS phenotypes. It suggests that the Rotterdam criteria might be used also in adolescents, at least in those with 2 or more years of gynecological age, for the diagnosis of PCOS.


Asunto(s)
Andrógenos/sangre , Hirsutismo , Menarquia/metabolismo , Ovario/diagnóstico por imagen , Síndrome del Ovario Poliquístico , Adolescente , Índice de Masa Corporal , Diagnóstico Precoz , Femenino , Hirsutismo/diagnóstico , Hirsutismo/metabolismo , Humanos , Italia/epidemiología , Fenotipo , Síndrome del Ovario Poliquístico/diagnóstico , Síndrome del Ovario Poliquístico/epidemiología , Síndrome del Ovario Poliquístico/metabolismo , Síndrome del Ovario Poliquístico/fisiopatología , Prevalencia , Ultrasonografía/métodos , Adulto Joven
2.
Hum Reprod ; 28(8): 2245-52, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23595974

RESUMEN

STUDY QUESTION: What alters cardiovascular and metabolic risk factors with aging in women with polycystic ovary syndrome (PCOS)? SUMMARY ANSWER: Lipid parameters, mainly low-density lipoprotein (LDL) cholesterol, increase with aging, but not in women who attain ovulatory cycles. WHAT IS KNOWN ALREADY: Cardiovascular and metabolic parameters tend to increase with aging, but this has not been shown in a prospective longitudinal study in women with PCOS. Correlates of these changes have not been identified. STUDY DESIGN: A prospective cohort of 118 hyperandrogenic women with PCOS who were followed from the age of 20-25 years at 5 year intervals for 20 years. PARTICIPANTS/MATERIALS, SETTING, METHODS: Thirty-five age-matched controls and another 35 age-matched controls in their 40s, 20 years later. Longitudinal measurements of body mass index (BMI), waist circumference, fasting serum steroids, glucose, insulin, lipids, prevalence of metabolic syndrome and ovulatory status. MAIN RESULTS AND THE ROLE OF CHANCE: After 20 years, in the entire group, waist circumference increased as did glucose, total cholesterol (C), high-density lipoprotein-C (HDL-C), LDL-C and non-HDL-C. The prevalence of metabolic syndrome was 7% at the beginning and 6% at the end. Fifty-one women with PCOS were found to be ovulatory and 67 remained anovulatory after 20 years. Anovulatory women had higher insulin, lower QUICKI and higher total C, LDL-C, non-HDL-C and lower HDL-C. In ovulatory women there were no alterations in lipids or glucose and minor changes in insulin and QUICKI compared with controls. None of the parameters were influenced by BMI or waist circumference. LIMITATIONS, REASONS FOR CAUTION: Inability to follow controls for 20 years. Associations observed between ovulatory function and lowered cardiovascular and metabolic risks cannot imply cause and effect. WIDER IMPLICATIONS OF THE FINDINGS: Phenotypic variability, particularly ovulatory function, in women diagnosed to have PCOS appears to influence cardiovascular and metabolic risks. It is unclear if these data pertain to other populations and ethnicities of women. STUDY FUNDING/COMPETING INTERESTS: Self-funded; no conflicts of interest.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Síndrome Metabólico/epidemiología , Síndrome del Ovario Poliquístico/complicaciones , Adulto , Factores de Edad , Glucemia , Índice de Masa Corporal , Enfermedades Cardiovasculares/complicaciones , Femenino , Hormonas Esteroides Gonadales/sangre , Humanos , Insulina/sangre , Lípidos/sangre , Estudios Longitudinales , Síndrome Metabólico/complicaciones , Ovulación , Prevalencia , Factores de Riesgo , Circunferencia de la Cintura
3.
J Endocrinol Invest ; 36(5): 358-63, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23449010

RESUMEN

Because women affected by polycystic ovary syndrome (PCOS) present an increased cardiovascular risk, the safety of estroprogestin treatment is debated and contrasting data have been reported. However, cardiovascular risk is not the same in all PCOS women and individual cardiovascular risk should be assessed before staring any estroprogestin treatment. The available data show that products containing both 2nd-generation and 3rd-generation progestins (including drospirenone and cyproterone acetate) represent a safe treatment in PCOS patients with regular cardiovascular risk. In PCOS patients with increased cardiovascular risk, a careful choice of estroprogestin product is needed and cardiovascular risk should be monitored during treatment. In obese PCOS patients with normal glucose tolerance and lipid profile, products containing 2nd-generation progestins may be preferred because of lower venous thromboembolism risk. In PCOS patients with altered lipid profile or glucose intolerance, 3rd-generation progestins should be used but, during treatment, cardiovascular risk should be periodically re-assessed. In special situations, metformin or statins may be added to estroprogestin treatment.


Asunto(s)
Enfermedades Cardiovasculares/etiología , Anticonceptivos Hormonales Orales/efectos adversos , Síndrome del Ovario Poliquístico/fisiopatología , Adulto , Enfermedades Cardiovasculares/inducido químicamente , Enfermedades Cardiovasculares/epidemiología , Anticonceptivos Orales Combinados/efectos adversos , Anticonceptivos Orales Combinados/uso terapéutico , Anticonceptivos Hormonales Orales/uso terapéutico , Femenino , Humanos , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Medicina de Precisión , Riesgo
4.
Minerva Ginecol ; 64(6): 501-5, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23232534

RESUMEN

Polycystic ovary syndrome (PCOS) is the most frequent endocrinopathy in women, affecting up to 10% of those in reproductive age. Furthermore, PCOS presents a lifetime risk of type II diabetes, cardiovascular diseases and endometrial cancer. Women with PCOS have increased cardiovascular risk; however, the risk is not the same in all patients and it is necessary to assess an individual risk profile. There is a discrepancy between increased cardiovascular risk at young age and postmenopausal number of cardiovascular events, probablu depending on changes in androgen ovarian function after the forties. However, changes with age of metabolic profile in women with PCOS have not been studied yet and many more data are necessary.


Asunto(s)
Síndrome del Ovario Poliquístico/metabolismo , Adolescente , Adulto , Antihipertensivos/uso terapéutico , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/etiología , Niño , Comorbilidad , Diabetes Mellitus Tipo 2/epidemiología , Diabetes Mellitus Tipo 2/etiología , Diabetes Mellitus Tipo 2/fisiopatología , Diabetes Mellitus Tipo 2/prevención & control , Dislipidemias/tratamiento farmacológico , Dislipidemias/epidemiología , Dislipidemias/etiología , Dislipidemias/fisiopatología , Femenino , Humanos , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Hipertensión/tratamiento farmacológico , Hipertensión/etiología , Resistencia a la Insulina , Metformina/uso terapéutico , Obesidad Abdominal/epidemiología , Obesidad Abdominal/etiología , Obesidad Abdominal/fisiopatología , Síndrome del Ovario Poliquístico/complicaciones , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Síndrome del Ovario Poliquístico/epidemiología , Factores de Riesgo
5.
J Immigr Minor Health ; 24(4): 853-861, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35072834

RESUMEN

Since 2010, Arizona's immigration law (SB 1070) has produced unintended racial profiling consequences for Hispanics. Earlier empirical evidence establishes its adverse mental health effects on young Hispanics. This study expands the analysis by introducing obesogenic repercussions. Using Youth Risk Behavior Surveillance System data from 2001 to 2017, Synthetic Control Method techniques are employed to isolate the law's health consequences. Results indicate significant post-2010 deviations from indistinguishable pre-2010 trends in health indicators for Arizona and its synthetic states. After 2010, Arizona's Hispanic youths registered relatively significantly higher incidences of mutually reinforcing mental and physical (obesogenic) indicators, even after accounting for nutritional improvements. Our findings do not discredit weight reduction benefits of favorable diet choices, but rather emphasize the stronger offsetting influence of SB 1070-induced obesogenic health behaviors. Thus, there is a need for policy re-evaluation to curb the law's unintended ramifications and launch more targeted youth-oriented health support programs.


Asunto(s)
Emigración e Inmigración , Hispánicos o Latinos , Adolescente , Arizona/epidemiología , Conductas Relacionadas con la Salud , Humanos , Obesidad
6.
J Endocrinol Invest ; 34(6): 422-6, 2011 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20959718

RESUMEN

BACKGROUND: Although dyslipidemia is common in the polycystic ovary syndrome (PCOS), current diagnostic guidelines suggest to evaluate only plasma HDL-cholesterol and triglyceride concentrations, assuming that, in this disorder, cardiovascular risk is mainly due to the presence of the metabolic syndrome (MS). In the US, MS has been found in up to 50% of PCOS, but in other countries its prevalence is lower. METHODS: We compared the prevalence of MS with that of increased LDL- and non-HDL-cholesterol levels in 350 Mediterranean PCOS women (244 anovulatory and 106 ovulatory), and 95 normo-weight and 90 body mass index (BMI)- matched controls. RESULTS: The prevalence of MS was 7.1% in PCOS, higher than normoweight and BMI-matched controls (2.4% and 3.5%, respectively, p < 0.05 for both). The prevalence of elevated LDL- and non-HDL-cholesterol levels in PCOS was respectively, 14.9% and 8.6%, higher than normoweight (2.1% and 1.0%, respectively, p < 0.01 for both) and BMI-matched controls (4.4% and 2.2%, respectively, p<0.05 for both). In PCOS, increased LDL-cholesterol was twice more prevalent than MS or non-HDL-cholesterol. Only a minority of PCOS with MS had increased LDL-cholesterol while increased non-HDL-cholesterol was generally associated to increased LDL-cholesterol. CONCLUSIONS: We have found that in Mediterranean PCOS the prevalence of MS is relatively low while elevated LDL-cholesterol levels are more prevalent. Therefore, beyond MS, a more comprehensive lipid evaluation, including LDL-cholesterol, is needed for a more effective assessment of cardiovascular risk in PCOS.


Asunto(s)
Biomarcadores/sangre , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/etiología , Síndrome Metabólico/etiología , Síndrome del Ovario Poliquístico/complicaciones , Adolescente , Adulto , Enfermedades Cardiovasculares/sangre , Estudios de Casos y Controles , Colesterol/sangre , HDL-Colesterol/sangre , LDL-Colesterol/sangre , Femenino , Estudios de Seguimiento , Humanos , Lípidos/sangre , Masculino , Síndrome Metabólico/sangre , Síndrome Metabólico/diagnóstico , Síndrome del Ovario Poliquístico/sangre , Pronóstico , Factores de Riesgo , Triglicéridos/sangre , Adulto Joven
8.
Climacteric ; 12 Suppl 1: 22-5, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19811236

RESUMEN

Young women with polycystic ovary syndrome (PCOS) present a high risk for cardiovascular disease because of the presence of abdominal obesity, insulin resistance and androgen excess. In addition, they present with endothelial dysfunction and early signs of atherosclerosis (increased carotid intima-media thickness and increased coronary calcium). However, the evidence of increased cardiovascular events during the postmenopausal age is relatively small, although some recent studies have indicated a slight increase in the severity of cardiovascular disease in women who had PCOS during their fertile age. The discrepancy between cardiovascular risk in young age and postmenopausal cardiovascular events may depend on changes in the risk that happen during the late fertile age or on overestimation of early atherosclerotic signs.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/etiología , Síndrome del Ovario Poliquístico/complicaciones , Posmenopausia/fisiología , Premenopausia/fisiología , Enfermedades Cardiovasculares/patología , Medicina Basada en la Evidencia , Femenino , Humanos , Prevalencia , Factores de Riesgo , Índice de Severidad de la Enfermedad
9.
Int J Clin Pract ; 63(1): 56-62, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19125993

RESUMEN

OBJECTIVE: Dyslipidaemia is very common in patients with polycystic ovary syndrome (PCOS) but, beyond plasma lipids, atherogenic lipoprotein (Lp) and apolipoprotein (apo) alterations are still ill defined. DESIGN: We measured concentrations of apoB, Lp(a) and small, dense low-density lipoprotein (LDL) in 42 patients with PCOS [age: 28 +/- 7 years, body mass index (BMI): 27 +/- 5 kg/m(2)] vs. 37 age- and BMI-matched healthy controls. METHODS: Elevated Lp(a) levels considered were those > 30 mg/dl while elevated apoB concentrations were those > 100 g/l. RESULTS: Polycystic ovary syndrome showed increased triglycerides levels (p = 0.0011) and lower high-density lipoprotein (HDL)-cholesterol concentrations (p = 0.0131) while total- and LDL cholesterol were similar. PCOS also showed smaller LDL size (p = 0.0005), higher levels of total small, dense LDL (p < 0.0001), higher concentrations of Lp(a), as considered as absolute values (p = 0.0143) and log-transformed (p = 0.0014), while no differences were found in apoB levels. Elevated Lp(a) concentrations were found in 24% of PCOS, while elevated apoB levels were relatively uncommon (14%). Spearman correlation analysis revealed that Lp(a) concentrations were weakly correlated only with HDL-cholesterol levels (r = -0.378, p = 0.0431). In addition, 36% of patients with PCOS with normal plasma lipid profile showed elevated levels of Lp(a), apoB or small, dense LDL. CONCLUSIONS: Atherogenic Lp abnormalities may be found in one-third of women with PCOS who have a normal lipid pattern. Future prospective studies are needed to test to which extent such atherogenic forms of dyslipidaemia may contribute to the increased cardiovascular risk in young women with PCOS.


Asunto(s)
Apolipoproteínas B/sangre , Enfermedades Cardiovasculares/prevención & control , LDL-Colesterol/sangre , Dislipidemias/sangre , Dislipidemias/complicaciones , Lipoproteína(a)/sangre , Síndrome del Ovario Poliquístico/sangre , Adulto , Índice de Masa Corporal , Estudios de Casos y Controles , Femenino , Humanos , Síndrome del Ovario Poliquístico/complicaciones , Factores de Riesgo , Adulto Joven
10.
Endocr Rev ; 21(4): 347-62, 2000 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-10950156

RESUMEN

Hirsutism, the presence of terminal (coarse) hairs in females in a male-like pattern, affects between 5% and 10% of women. Of the sex steroids, androgens are the most important in determining the type and distribution of hairs over the human body. Under the influence of androgens hair follicles that are producing vellus-type hairs can be stimulated to begin producing terminal hairs (i.e., terminalized). The activity of local 5alpha-reductase (5alpha-RA) determines to a great extent the production of dihydrotestosterone (DHT), and consequently the effect of androgens on hair follicles. While there are two distinct 5alpha-RA isoenzymes, type 1 and type 2, the activity of these in the facial or abdominal skin of hirsute women remains to be determined. Although the definition of idiopathic hirsutism (IH) has been an evolving process, the diagnosis of IH should be applied only to hirsute patients with normal ovulatory function and circulating androgen levels. A history of regular menses is not sufficient to exclude ovulatory dysfunction, since up to 40% of eumenorrheic hirsute women are anovulatory. The diagnosis of IH, when strictly defined, will include less than 20% of all hirsute women. The pathophysiology of IH is presumed to be a primary increase in skin 5alpha-RA activity, probably of both isoenzyme types, and possibly an alteration in androgen receptor function. Therapeutically, these patients respond to antiandrogen or 5alpha-RA inhibitor therapy. Pharmacological suppression of ovarian or adrenal androgen secretion may be of additional, albeit limited, benefit. New therapeutic strategies such as laser epilation or the use of new biological response modifiers may play an important role in offering a more effective means of treatment to remove unwanted hair. Further investigations into the genetic, molecular, and metabolic aspects of this disorder, including only well defined patients, are needed.


Asunto(s)
Hirsutismo , 3-Oxo-5-alfa-Esteroide 4-Deshidrogenasa , Andrógenos/metabolismo , Biomarcadores/sangre , Femenino , Cabello/crecimiento & desarrollo , Hirsutismo/diagnóstico , Hirsutismo/epidemiología , Hirsutismo/etiología , Hirsutismo/terapia , Humanos , Receptores Androgénicos/genética
11.
J Endocrinol Invest ; 31(1): 35-41, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18296903

RESUMEN

BACKGROUND: Dyslipidemia is a common metabolic complication in polycystic ovary syndrome (PCOS). The aim of this study was to determine if differences exist in dyslipidemia in women with PCOS from different ethnic and geographical backgrounds. METHODS: This retrospective study evaluated the serum fasting lipid profiles of 106 women with PCOS from the United States and 108 women with PCOS from Italy evaluated at endocrinology clinics. RESULTS: American women had higher mean body mass index than Italian women (36.1+/-8.6 vs 28.1+/-5.8 kg/m2, p<0.01). Low HDL-cholesterol was the most prevalent lipid abnormality in both populations. U.S. women had higher mean levels of serum total cholesterol, LDL-cholesterol, and triglycerides, and lower mean serum HDL-cholesterol. Most of these differences were due to differences in weight. After controlling for differences in weight and age, fasting serum triglycerides remained higher in U.S. women compared with Italian women [131.1 mg/dl, SE=7.8, 95% confidence interval =(115.7, 146.5) vs 99.3, SE=8.4, 95% confidence interval =(82.9, 115.8)]. CONCLUSIONS: Variations in body weight alone do not fully explain differences in dyslipidemia in women of diverse ethnic and geographical backgrounds. Genetic and environmental factors, such as diet and activity level, likely contribute to these differences.


Asunto(s)
Dislipidemias/sangre , Dislipidemias/etnología , Lípidos/sangre , Síndrome del Ovario Poliquístico/sangre , Síndrome del Ovario Poliquístico/etnología , Adulto , Índice de Masa Corporal , Enfermedades Cardiovasculares/etiología , Estudios de Cohortes , Dislipidemias/epidemiología , Dislipidemias/etiología , Femenino , Humanos , Italia/epidemiología , Obesidad/sangre , Obesidad/complicaciones , Sobrepeso/sangre , Sobrepeso/complicaciones , Síndrome del Ovario Poliquístico/complicaciones , Prevalencia , Estudios Retrospectivos , Factores de Riesgo , Estados Unidos/epidemiología
12.
Minerva Endocrinol ; 32(1): 67-71, 2007 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-17353867

RESUMEN

Cardiovascular diseases represent the major cause of death in most of developed countries and ultimately kill as many men as women. Both genders are exposed to the same risk factors but their rates of cardiovascular morbidity and mortality are very different until old age. This represents a crucial point; in fact, only at age 75 and over cardiovascular rates of women approximate those of men. It has been suggested that differences in hormonal status and mainly in androgen levels may explain such gender disparity. Consistently with this hypothesis, it has been shown that women with polycystic ovary syndrome (PCOS) have elevated cardiovascular risk despite their young age. However, the possibility that androgens may increase cardiovascular risk remains controversial. Hyperandrogenism, as isolated androgen excess, has not been clearly recognised so far as a risk factor for cardiovascular diseases. In addition, the risk of premature cardiovascular diseases in PCOS is at present uncertain. Long-term studies examining the prevalence of cardiovascular diseases among women with PCOS did not demonstrate a clear increased risk for cardiovascular morbidity and mortality. Thus, it seems that androgens have a limited role in inducing cardiovascular risk; the altered risk factors found in women with PCOS are mainly dependent on the metabolic components of this syndrome as well as on insulin resistance and reduced adiponectin secretion.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Hiperandrogenismo/epidemiología , Adiponectina/deficiencia , Adulto , Edad de Inicio , Anciano , Enfermedades Cardiovasculares/sangre , Femenino , Humanos , Hiperandrogenismo/sangre , Resistencia a la Insulina , Masculino , Persona de Mediana Edad , Síndrome del Ovario Poliquístico/sangre , Síndrome del Ovario Poliquístico/epidemiología , Prevalencia , Factores de Riesgo
13.
J Endocrinol Invest ; 30(2): 111-6, 2007 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-17392600

RESUMEN

BACKGROUND: Serum DHEAS has been found to be elevated in some women with polycystic ovary syndrome (PCOS). We wished to determine whether this prevalence is different in women with androgen excess who have different phenotypes and to correlate these findings with various cardiovascular and metabolic parameters. METHODS: Two hundred and thirty-eight young hyperandrogenic women categorized into various diagnostic groups were evaluated for elevations in serum DHEAS, testosterone, glucose, insulin, quantitative insulin-sensitivity check index (QUICKI), cholesterol, HDL-C, LDL-C, triglycerides and C-reactive protein (CRP). Data were stratified based on elevations in DHEAS. RESULTS: Serum DHEAS was elevated in 39.5% for the entire group [36.7% in PCOS and 48.3% in idiopathic hyperandrogenism (IHA)]. In classic (C)-PCOS, the prevalence was 39.6% and in ovulatory (OV) PCOS it was 29.1%. These differences were not statistically significant. Women with elevated DHEAS had higher testosterone but lower insulin, higher QUICKI, lower total and LDL-cholesterol and higher HDL-cholesterol, p<0.01. Triglycerides and CRP were not different. This trend was greatest in women with C-PCOS. CONCLUSIONS: The prevalence of adrenal hyperandrogenism, as determined by elevations in DHEAS, appears to be statistically similar in IHA, C-PCOS and compared to OV-PCOS. Metabolic and cardiovascular parameters were noted to be more favorable in those women who have higher DHEAS levels.


Asunto(s)
Hiperandrogenismo/epidemiología , Hiperandrogenismo/metabolismo , Fenotipo , Síndrome del Ovario Poliquístico/epidemiología , Síndrome del Ovario Poliquístico/metabolismo , Corteza Suprarrenal/metabolismo , Adulto , Andrógenos/metabolismo , Femenino , Humanos , Hiperandrogenismo/genética , Insulina/metabolismo , Síndrome del Ovario Poliquístico/genética , Prevalencia , Testosterona/metabolismo
14.
PeerJ ; 5: e2886, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28133569

RESUMEN

We present the first study that evaluates jaguar-puma interactions in the arid lands of northern Mexico, where jaguars have their northernmost breeding population and both predators are persecuted for livestock depredation. We tested whether jaguars are the dominant species in this unique ecosystem, where: (1) pumas outnumber jaguars, (2) pumas are better adapted to arid environments, and (3) jaguars and pumas are of similar size. We analyzed four years of data with two approaches; a two species conditional occupancy model and an activity patterns analysis. We used camera location and prey presence as covariates for jaguar and puma detection and presence probabilities. We also explored overlap in activities of predators and prey. Where both species were detected, peccary presence was positively correlated with both jaguar and puma presence, whereas in areas where jaguars were detected but pumas were not, deer presence explained the probability of jaguar presence. We found that both predators were more likely to co-occur together than to be found independently, and so we rejected the hypothesis that jaguars were the dominant species in our study area. Predators were mainly nocturnal and their activity patterns overlapped by 60%. Jaguar, as compared with puma, overlapped more with deer and calves; puma overlapped with calves more than with other prey, suggesting a preference. We believe exploring predator relationships at different scales may help elucidate mechanisms that regulate their coexistence.

15.
PLoS One ; 12(6): e0179505, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28658274

RESUMEN

In this study, we estimate life history parameters and abundance for a protected jaguar population using camera-trap data from a 14-year monitoring program (2002-2015) in Belize, Central America. We investigated the dynamics of this jaguar population using 3,075 detection events of 105 individual adult jaguars. Using robust design open population models, we estimated apparent survival and temporary emigration and investigated individual heterogeneity in detection rates across years. Survival probability was high and constant among the years for both sexes (φ = 0.78), and the maximum (conservative) age recorded was 14 years. Temporary emigration rate for the population was random, but constant through time at 0.20 per year. Detection probability varied between sexes, and among years and individuals. Heterogeneity in detection took the form of a dichotomy for males: those with consistently high detection rates, and those with low, sporadic detection rates, suggesting a relatively stable population of 'residents' consistently present and a fluctuating layer of 'transients'. Female detection was always low and sporadic. On average, twice as many males than females were detected per survey, and individual detection rates were significantly higher for males. We attribute sex-based differences in detection to biases resulting from social variation in trail-walking behaviour. The number of individual females detected increased when the survey period was extended from 3 months to a full year. Due to the low detection rates of females and the variable 'transient' male subpopulation, annual abundance estimates based on 3-month surveys had low precision. To estimate survival and monitor population changes in elusive, wide-ranging, low-density species, we recommend repeated surveys over multiple years; and suggest that continuous monitoring over multiple years yields even further insight into population dynamics of elusive predator populations.


Asunto(s)
Distribución Animal , Animales Salvajes , Panthera , Animales , Conducta Animal , Belice , Femenino , Masculino , Dinámica Poblacional
16.
J Clin Endocrinol Metab ; 91(1): 2-6, 2006 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-16263820

RESUMEN

CONTEXT: We undertook this study to estimate the prevalence of the various androgen excess disorders using the new criteria suggested for the diagnosis of polycystic ovary syndrome (PCOS). SETTING: The study was performed at two endocrine departments at the University of Palermo (Palermo, Italy). PATIENTS: The records of all patients referred between 1980 and 2004 for evaluation of clinical hyperandrogenism were reevaluated. All past diagnoses were reviewed using the actual diagnostic criteria. To be included in this study, the records of the patients had to present the following available data: clinical evaluation of hyperandrogenism, body weight and height, testosterone (T), free T, dehydroepiandrosterone sulfate, 17-hydroxyprogesterone, progesterone, and pelvic sonography. A total of 1226 consecutive patients were seen during the study period, but only the scores of 950 patients satisfied all criteria and were reassessed for the diagnosis. RESULTS: The prevalence of androgen excess disorders was: PCOS, 72.1% (classic anovulatory patients, 56.6%; mild ovulatory patients, 15.5%), idiopathic hyperandrogenism, 15.8%; idiopathic hirsutism, 7.6%; 21-hydroxylase-deficient nonclassic adrenal hyperplasia, 4.3%; and androgen-secreting tumors, 0.2%. Compared with other androgen excess disorders, patients with PCOS had increased body weight whereas nonclassic adrenal hyperplasia patients were younger and more hirsute and had higher serum levels of T, free T, and 17-hydroxyprogesterone. CONCLUSIONS: Classic PCOS is the most common androgen excess disorder. However, mild androgen excess disorders (ovulatory PCOS and idiopathic hyperandrogenism) are also common and, in an endocrine setting, include about 30% of patients with clinical hyperandrogenism.


Asunto(s)
Andrógenos/sangre , Hiperandrogenismo/sangre , Hiperandrogenismo/epidemiología , 17-alfa-Hidroxiprogesterona/sangre , Acné Vulgar/epidemiología , Acné Vulgar/etiología , Adolescente , Adulto , Alopecia/epidemiología , Alopecia/etiología , Andrógenos/metabolismo , Anovulación/epidemiología , Anovulación/etiología , Estatura/fisiología , Índice de Masa Corporal , Peso Corporal/fisiología , Diagnóstico Diferencial , Femenino , Hirsutismo/epidemiología , Hirsutismo/etiología , Humanos , Neoplasias/diagnóstico , Neoplasias/metabolismo , Ovario/patología , Pelvis/diagnóstico por imagen , Síndrome del Ovario Poliquístico/diagnóstico , Síndrome del Ovario Poliquístico/epidemiología , Progesterona/sangre , Estudios Retrospectivos , Testosterona/sangre , Ultrasonografía
17.
J Clin Endocrinol Metab ; 91(9): 3451-6, 2006 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-16822826

RESUMEN

CONTEXT: Because many women with 21-hydroxylase (21-OH)-deficient nonclassic adrenal hyperplasia (NCAH) carry at least one allele affected by a severe mutation of CYP21, they are at risk for giving birth to infants with classic adrenal hyperplasia (CAH). OBJECTIVE: Our objective was to determine the frequency of CAH and NCAH infants born to mothers with 21-OH-deficient NCAH. DESIGN AND SETTING: We conducted an international multicenter retrospective/prospective study. PATIENTS AND METHODS: The outcome of 203 pregnancies among 101 women with 21-OH-deficient NCAH was reviewed. The diagnosis of 21-OH-deficient NCAH was established by a basal or post-ACTH-stimulation 17-hydroxyprogesterone level of more than 10 ng/ml (30.3 nmol/liter). When possible, genotype analyses were performed to confirm CAH or NCAH in the offspring. RESULTS: Of the 203 pregnancies, 138 (68%) occurred before the mother's diagnosis of NCAH and 65 (32%) after the diagnosis. Spontaneous miscarriages occurred in 35 of 138 pregnancies (25.4%) before the maternal diagnosis of NCAH, and in only four of 65 pregnancies (6.2%) after the diagnosis (P < 0.002). Four (2.5%; 95% confidence interval, 0.7-6.2%) of the 162 live births were diagnosed with CAH. To date, 24 (14.8%; 95% confidence interval, 9.0-20.6%) children, 13 girls and 11 boys, have been diagnosed with NCAH. The distribution of NCAH children and their mothers varied significantly by ethnicity (P < 0.0001, for both). CONCLUSIONS: The risk of a mother with 21-OH-deficient NCAH for giving birth to a child affected with CAH is 2.5%; at least 14.8% of children born to these mothers have NCAH.


Asunto(s)
Hiperplasia Suprarrenal Congénita/genética , Esteroide 21-Hidroxilasa/genética , Hiperplasia Suprarrenal Congénita/enzimología , Hiperplasia Suprarrenal Congénita/epidemiología , Adulto , Preescolar , Femenino , Genotipo , Humanos , Lactante , Recién Nacido , Masculino , Embarazo , Prevalencia , Estudios Prospectivos , Estudios Retrospectivos
18.
Eur J Endocrinol ; 154(1): 141-5, 2006 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-16382003

RESUMEN

OBJECTIVE: Metabolic syndrome (MBS) is a common disorder and is thought to be extremely prevalent in polycystic ovary syndrome (PCOS). In the USA the prevalence of MBS in PCOS has been reported to be as high as 43-46% using Adult Treatment Panel III (ATP-III) criteria. Because of differences in diet, lifestyle and genetic factors, we postulated that the prevalence of MBS might not be as high in Italian women. This study sought to determine the prevalence of MBS in Italian women using both the ATP-III and the World Health Organization (WHO) criteria and to determine whether the prevalence is influenced by the way in which PCOS is diagnosed. DESIGN: Assessment of the prevalence of MBS in 282 women with PCOS, aged 18-40 years, living in western Sicily. Eighty-five age- and weight-matched normal women served as controls. METHODS: Patients were divided into those with chronic anovulation and hyperandrogenism (classic PCOS; n = 225) and others with hyperandrogenism and polycystic ovaries but who were ovulatory (ovulatory PCOS; n = 57). A 75 g oral glucose tolerance test was carried out, as were lipid determinations; insulin resistance was assessed by the Quantitative Insulin-Sensitivity Check Index (QUICKI). We used ATP-III and WHO criteria to diagnose MBS. RESULTS: Using ATP-III criteria, the prevalence of MBS was 8.2% and using WHO criteria it was 16% in Italian women with PCOS. In controls, the prevalence was 2.4% using both methods. In classic PCOS patients, MBS was higher (8.9% by ATP-III, 17.3% by WHO) than in ovulatory PCOS (5% and 10.6% respectively). Body weight significantly modified prevalence rates. CONCLUSION: MBS is substantially higher in women with PCOS than in the general population, and the prevalence is higher in those women diagnosed by classic criteria. However, the prevalence of MBS in PCOS appears to be much lower in Italy than in the USA.


Asunto(s)
Síndrome Metabólico/epidemiología , Síndrome del Ovario Poliquístico/diagnóstico , Síndrome del Ovario Poliquístico/epidemiología , Adolescente , Adulto , Femenino , Humanos , Hipertrigliceridemia/sangre , Italia/epidemiología , Síndrome Metabólico/diagnóstico , Prevalencia , Estados Unidos/epidemiología
19.
Minerva Ginecol ; 58(2): 109-14, 2006 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-16582867

RESUMEN

Because insulin resistance and visceral obesity are important features of polycystic ovary syndrome (PCOS), metabolic syndrome is much more common in women with PCOS than in the general female population of similar age. It has been reported that in the USA almost 50% of women with PCOS present the metabolic syndrome. In Italy, where women with PCOS have a lower mean body weight and less frequently increased serum triglycerides than US PCOS, metabolic syndrome is less common but still 4 times more frequent in PCOS patients than in the general female population of similar age. Patients with mild PCOS phenotype (ovulatory PCOS) have a lower prevalence of metabolic syndrome but, in these patients too, metabolic syndrome is 2 times more frequent than in the normal population. These data suggest that PCOS is the most common cause of increased cardiovascular risk in young adult women. All obese and overweight women with PCOS should be screened for metabolic syndrome and, when the syndrome is not found, the screening should be repeated every 2 or 3 years. Treatment consists in lifestyle intervention. Pharmacological therapies should be used only when lifestyle fails to normalize cardiovascular risk factors.


Asunto(s)
Síndrome Metabólico/complicaciones , Síndrome del Ovario Poliquístico/complicaciones , Adolescente , Adulto , Femenino , Humanos , Síndrome Metabólico/epidemiología , Persona de Mediana Edad , Síndrome del Ovario Poliquístico/epidemiología , Prevalencia
20.
J Clin Endocrinol Metab ; 90(5): 2545-9, 2005 May.
Artículo en Inglés | MEDLINE | ID: mdl-15728203

RESUMEN

In hyperandrogenic women, several phenotypes may be observed. This includes women with classic polycystic ovary syndrome (C-PCOS), those with ovulatory (OV) PCOS, and women with idiopathic hyperandrogenism (IHA), which occurs in women with normal ovaries. Where other causes have been excluded, we categorized 290 hyperandrogenic women who were seen consecutively for this complaint between 1993 and 2004 into these three subgroups. The aim was to compare the prevalence of obesity, insulin resistance, and dyslipidemia as well as increases in C-reactive protein and homocysteine in these different phenotypes with age-matched ovulatory controls of normal weight (n = 85) and others matched for body mass index (BMI) with women with C-PCOS (n = 42). Although BMI affected fasting serum insulin and the Quantitative Insulin-Sensitivity Check Index, these markers of insulin resistance were greatest in C-PCOS (n = 204), followed by OV-PCOS (n = 50) and then IHA (n = 33). Androgen levels were similar in OV-PCOS and IHA but were higher in C-PCOS, whereas gonadotropins were similar in all groups. Lipid abnormalities were highest in C-PCOS and OV-PCOS and were normal in IHA. C-reactive protein was elevated in C-PCOS and OV-PCOS but not IHA. Homocysteine was elevated only in C-PCOS. Overall, the prevalence of obesity (BMI > 30) was 29% in C-PCOS, 8% in OV-PCOS, and 15% in IHA and insulin resistance (Quantitative Insulin-Sensitivity Check Index < 0.33) was 68% in C-PCOS, 36% in OV-PCOS, and 26% in IHA. The prevalence of having at least one elevated cardiovascular risk marker was 45% in C-PCOS 38% in OV-PCOS and was not increased on IHA (6%). These results suggest that among hyperandrogenic women the prevalence of abnormal metabolic and cardiovascular risk parameters is greatest in C-PCOS, followed by OV-PCOS and then women with IHA. Moreover, in that in OV-PCOS and IHA, ages and weights were similar yet the prevalence of metabolic and cardiovascular risk was greater in OV-PCOS, the finding of polycystic ovaries may be a significant modifying factor.


Asunto(s)
Enfermedades Cardiovasculares/etiología , Síndrome del Ovario Poliquístico/metabolismo , Índice de Masa Corporal , Proteína C-Reactiva/análisis , LDL-Colesterol/sangre , Femenino , Humanos , Insulina/sangre , Resistencia a la Insulina , Hormona Luteinizante/sangre , Fenotipo , Síndrome del Ovario Poliquístico/complicaciones , Factores de Riesgo
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