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1.
Transl Psychiatry ; 12(1): 268, 2022 07 07.
Artigo em Inglês | MEDLINE | ID: mdl-35794104

RESUMO

Although the currently available antidepressants are well established in the treatment of the major depressive disorder (MDD), there is strong variability in the response of individual patients. Reliable predictors to guide treatment decisions before or in an early stage of treatment are needed. DNA-methylation has been proven a useful biomarker in different clinical conditions, but its importance for mechanisms of antidepressant response has not yet been determined. 80 MDD patients were selected out of >500 participants from the Early Medication Change (EMC) cohort with available genetic material based on their antidepressant response after four weeks and stratified into clear responders and age- and sex-matched non-responders (N = 40, each). Early improvement after two weeks was analyzed as a secondary outcome. DNA-methylation was determined using the Illumina EPIC BeadChip. Epigenome-wide association studies were performed and differentially methylated regions (DMRs) identified using the comb-p algorithm. Enrichment was tested for hallmark gene-sets and in genome-wide association studies of depression and antidepressant response. No epigenome-wide significant differentially methylated positions were found for treatment response or early improvement. Twenty DMRs were associated with response; the strongest in an enhancer region in SORBS2, which has been related to cardiovascular diseases and type II diabetes. Another DMR was located in CYP2C18, a gene previously linked to antidepressant response. Results pointed towards differential methylation in genes associated with cardiac function, neuroticism, and depression. Linking differential methylation to antidepressant treatment response is an emerging topic and represents a step towards personalized medicine, potentially facilitating the prediction of patients' response before treatment.


Assuntos
Transtorno Depressivo Maior , Diabetes Mellitus Tipo 2 , Antidepressivos/uso terapêutico , DNA , Transtorno Depressivo Maior/tratamento farmacológico , Transtorno Depressivo Maior/genética , Diabetes Mellitus Tipo 2/genética , Epigênese Genética , Epigenoma , Estudo de Associação Genômica Ampla/métodos , Humanos
3.
J Dent Res ; 96(6): 626-632, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28530469

RESUMO

Bacteria present in the root canal (RC) space following an RC treatment (RCT) can lead to persistent infections, resulting in treatment failure and the need for reintervention or extraction. Currently, there are no standardized methods in use to clinically detect bacterial presence within RC spaces. The use of paper point sampling and fluorescence staining was shown to be a rapid method, able to detect residual bacteria following treatment. The study demonstrated that Calcein acetoxymethyl (AM) proved to be a suitable dye for detecting vital bacteria within mature endodontic biofilms, with an improved sensitivity over colony-forming unit counting in a stressed biofilm model. Furthermore, in a clinical trial with primary RCTs, 53 infected teeth were sampled in vivo, and increased detection of vital cells was found when compared with colony-forming unit counting, highlighting the sensitivity of the technique in detecting low cell numbers. By combining fluorescent staining and microspectroscopy with software-based spectral analysis, successful detection of vital cells from RCs was possible after 5 min of Calcein AM incubation. Application of this technology during RCT has the potential to reduce persistent infections through vital cell detection and additional treatment. Furthermore, this technique could be applied to antimicrobial research and disinfection control in clinical settings ( ClinicalTrials.gov NCT03055975).


Assuntos
Técnicas Bacteriológicas/métodos , Biofilmes , Cavidade Pulpar/microbiologia , Tratamento do Canal Radicular , Carga Bacteriana , Contagem de Colônia Microbiana , Desinfecção/métodos , Humanos , Viabilidade Microbiana , Microscopia de Fluorescência , Coloração e Rotulagem
4.
Odovtos (En línea) ; 19(1)abr. 2017.
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1506896

RESUMO

ntroduction. Enamel microabrasion is a procedure used for removing a superficial layer of enamel that has some alteration of color and/or texture caused by dental fluorosis. The purpose of this study was to compare the microhardness and micromorphology of the fluorotic enamel surface after microabrasion with 6.6% hydrochloric acid and silica or 18% hydrochloric acid and evaluate the effect of desensitizing agent exposure on the treated enamel. Materials and Methods. Twenty anterior teeth with moderate fluorosis were divided into two groups: 1) Perla-Dent® group and 2) Opalustre® group. Each buccal surface of incisors was sectioned to obtain samples 3x3 mm. The samples were then mounted in acrylic blocks. The enamel surface of the blocks was polished, after the microabrasion materials and desensitizing agent were applied according to the manufacturer's instructions. All samples were analyzed by Vickers microhardness tester and scanning electron microscopy (SEM). Results. Both experimental groups presented a decrease in the microhardness values, with statistically significant differences (p<0.0001) when comparing the baseline and after treatments values. To compare the microhardness values after both microabrasion and desensitizing treatment in the study groups, it was observed that the Perla-Dent® group obtained lower values than the Opalescence® group with a statistically significant difference (p<0.0001). The representative images of study groups in SEM showed the enamel surface morphology after Perla-Dent® treatment more irregular and a very marked relief than that observed in enamel surface morphology after Opalustre® treatment. Conclusion. The surface of the enamel was more affected with Perla-Dent® treatment than with Opalustre® treatment and the placement of UltraEz® agent does not recover its baseline microhardness.


ntroducción. La microabrasión del esmalte es un procedimiento usado para remover la capa superficial de esmalte que tiene alguna alteración de color y / o textura causada por la fluorosis dental. El objetivo de este estudio fue comparar la microdureza y micromorfología de la superficie del esmalte fluorado después de microabrasión con ácido clorhídrico al 6,6% y sílice ó 18% de ácido clorhídrico y evaluar el efecto de la exposición del agente desensibilizante sobre el esmalte tratado. Materiales y métodos. 20 dientes anteriores con fluorosis moderada se dividieron en dos grupos: 1) grupo PerlaDent® y 2) grupo Opalustre®. La superficie bucal se seccionó para obtener muestras de 3x3 mm. Las muestras se montaron luego en bloques acrílicos. La superficie del esmalte de los bloques fue pulida, y posteriormente los materiales de microabrasión y el agente desensibilizante se aplicaron de acuerdo con las instrucciones del fabricante. Todas las muestras fueron analizadas por medio de microdureza Vickers y Microscopía electrónica de barrido (MEB). Resultados. Ambos grupos experimentales presentaron disminución de los valores de microdureza con diferencias estadísticamente significativas (p<0.0001) al comparar los valores de antes y después de los tratamientos. Al comparar los valores de microdureza después del tratamiento de microabrasión y desensibilizante en los grupos de estudio, se observó que el grupo Perla-Dent® obtuvo valores más bajos que el grupo Opalustre® con diferencia estadísticamente significativa (p<0.0001). Las imágenes representativas de los grupos de estudio en MEB mostraron la morfología de la superficie del esmalte después del tratamiento con Perla-Dent® más irregular y con un relieve más marcado que el observado en la superficie del esmalte después del tratamiento con Opalustre®. Conclusión. La superficie del esmalte se presentó más afectada posterior al tratamiento con Perla-Dent® que con Opalustre® y la colocación del agente UltraEz® no logró recuperar el grado de microdureza basal.

5.
Int Endod J ; 49(4): 325-33, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25944414

RESUMO

AIM: To compare the success of an inferior alveolar nerve block (IANB) after injecting a combination of mepivacaine and tramadol or mepivacaine alone in patients with symptomatic irreversible pulpitis (SIP) in mandibular permanent molars. METHODOLOGY: This study was a double-blind, randomized, controlled clinical trial. Two study groups were selected, each consisting of 28 patients who exhibited SIP on the first or second mandibular molars. All included patients presented with moderate-to-severe preoperative pain according to the modified Heft-Parker visual analogue scale (VAS). Patients were anaesthetized using the IANB technique employing identical cartridges that contained either 1.3 mL of 2% mepivacaine with epinephrine 1 : 100 000 plus 0.5 mL of tramadol 50 mg mL(-1) (experimental group) or 1.8 mL of 2% mepivacaine with epinephrine 1 : 100 000 (control group). After 15 min, anaesthesia was evaluated by a progressive four-test examination, that is numbness of the lip, positive or negative cold test, asymptomatic management of dental hard tissues and access to dental pulp. Success of the IANB was defined as the absence of pain during any of these evaluations. The data were analysed with a chi-square, Fisher's or Mann-Whitney U test. RESULTS: A total of 74 patients were initially assessed, with 56 patients eventually included and 18 excluded. No significant differences in age (P = 0.384) or gender (P = 1) were found between the two groups. The success rates of anaesthesia with the IANB for the experimental and control groups were 57.1 and 46.4%, respectively. The success rate of anaesthesia in the experimental group was not significantly different (P ˃ 0.05) from that of the control group. The duration of the anaesthetic effect was significantly longer for the experimental group (P = 0.026). CONCLUSION: The combination of mepivacaine-tramadol achieved similar success rates for IANB when compared to mepivacaine 2% epinephrine 1 : 100 000. There was no significant difference in the anaesthetic efficacy between the control and experimental solutions, and none of the solutions tested were completely successful.


Assuntos
Analgésicos Opioides/uso terapêutico , Anestésicos Locais/uso terapêutico , Nervo Mandibular/efeitos dos fármacos , Mepivacaína/uso terapêutico , Dente Molar/cirurgia , Bloqueio Nervoso/métodos , Manejo da Dor/métodos , Pulpite/cirurgia , Tratamento do Canal Radicular , Tramadol/uso terapêutico , Adulto , Método Duplo-Cego , Combinação de Medicamentos , Feminino , Humanos , Masculino , Mandíbula , Medição da Dor , Resultado do Tratamento
6.
Psychol Med ; 45(14): 2951-8, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25994276

RESUMO

BACKGROUND: Overvaluation of body shape/weight is thought to be the core psychopathology underlying eating disorders, which propels engagement in non-compensatory weight-control behaviors. In turn, these behaviors lead to binge eating and/or maintenance of low weight thereby reinforcing overvaluation. The present study investigated the reciprocal relationship between overvaluation and engagement in non-compensatory weight-control behaviors (defined in two ways: restrictive eating and compulsive exercise) among women diagnosed with anorexia nervosa or bulimia nervosa (N = 237). METHOD: Participants completed clinical interviews in which weekly eating disorder symptoms and behaviors were assessed over 2 years. RESULTS: Overvaluation on a given week was associated with greater engagement in non-compensatory weight-control behaviors during the following week. Further, engagement in non-compensatory weight-control behaviors on a given week was associated with greater overvaluation during the following week. These findings held true regardless of participants' shape/weight concerns (feelings of fatness and fat phobia), and eating disorder diagnosis. CONCLUSIONS: Our data provide empirical support for key aspects of the transdiagnostic cognitive-behavioral model of eating disorders and suggest that targeting non-compensatory weight-control behaviors in treatment may help alleviate overvaluation and shape/weight concerns.


Assuntos
Imagem Corporal/psicologia , Terapia Cognitivo-Comportamental/métodos , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Transtornos da Alimentação e da Ingestão de Alimentos/terapia , Autoimagem , Índice de Massa Corporal , Peso Corporal , Manual Diagnóstico e Estatístico de Transtornos Mentais , Feminino , Seguimentos , Humanos , Pacientes Ambulatoriais
8.
Int Endod J ; 44(5): 440-6, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21255048

RESUMO

AIM: To evaluate the kinetics of the inflammatory tissue response to three root canal sealers using a physicochemical method for quantification of the enhanced vascular permeability and histopathological analysis. METHODOLOGY: Twenty-eight male Wistar rats randomly assigned to four groups according to the evaluation periods (1, 3, 7 and 14 days) were used to assess the vascular permeability and histopathological reaction to RoekoSeal, AH Plus and Sealapex (new formulation) sealers, using saline and Chloropercha as negative and positive controls, respectively. Seven rats were sacrificed per period. The biocompatibility of the sealers was evaluated spectrophotometrically and histopathologically. RESULTS: At day 14, Sealapex produced significantly more inflammatory exudate than AH Plus and RoekoSeal (P < 0.05); however, there was no significant difference between AH Plus and RoekoSeal (P > 0.05). Sealapex (new formulation) was the most irritating sealer, producing severe inflammation with the presence of multinucleated giant cells. RoekoSeal was the most biocompatible sealer, producing the least amount of inflammatory exudate. CONCLUSIONS: RoekoSeal root canal sealer was biocompatible when implanted in connective tissue.


Assuntos
Permeabilidade Capilar/efeitos dos fármacos , Reação a Corpo Estranho/induzido quimicamente , Inflamação/induzido quimicamente , Materiais Restauradores do Canal Radicular , Animais , Bálsamos , Hidróxido de Cálcio , Cimentos Dentários , Combinação de Medicamentos , Edema/induzido quimicamente , Resinas Epóxi , Reação a Corpo Estranho/imunologia , Guta-Percha , Implantes Experimentais , Inflamação/imunologia , Injeções Subcutâneas , Masculino , Projetos Piloto , Ratos , Ratos Wistar , Salicilatos , Estatísticas não Paramétricas , Fatores de Tempo , Óxido de Zinco
9.
Eur Eat Disord Rev ; 18(2): 79-89, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20151366

RESUMO

Childhood and adolescence are critical periods of neural development and physical growth. The malnutrition and related medical complications resulting from eating disorders such as anorexia nervosa (AN), bulimia nervosa (BN) and eating disorder not otherwise specified may have more severe and potentially more protracted consequences during youth than during other age periods. The consensus opinion of an international workgroup of experts on the diagnosis and treatment of child and adolescent eating disorders is that (a) lower and more developmentally sensitive thresholds of symptom severity (e.g. lower frequency of purging behaviours, significant deviations from growth curves as indicators of clinical severity) be used as diagnostic boundaries for children and adolescents, (b) behavioural indicators of psychological features of eating disorders be considered even in the absence of direct self-report of such symptoms and (c) multiple informants (e.g. parents) be used to ascertain symptom profiles. Collectively, these recommendations will permit earlier identification and intervention to prevent the exacerbation of eating disorder symptoms.


Assuntos
Comportamento do Adolescente/psicologia , Comportamento Infantil/psicologia , Manual Diagnóstico e Estatístico de Transtornos Mentais , Transtornos da Alimentação e da Ingestão de Alimentos/classificação , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Diretrizes para o Planejamento em Saúde , Adolescente , Desenvolvimento do Adolescente , Anorexia Nervosa/diagnóstico , Anorexia Nervosa/psicologia , Bulimia Nervosa/diagnóstico , Bulimia Nervosa/psicologia , Criança , Desenvolvimento Infantil , Transtornos da Alimentação e da Ingestão de Alimentos/psicologia , Humanos , Sensibilidade e Especificidade
10.
Psychol Med ; 40(10): 1735-44, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20047706

RESUMO

OBJECTIVE: Anorexia nervosa (AN) and bulimia nervosa (BN) are marked by longitudinal symptom fluctuations. DSM-IV-TR does not address how to classify eating disorder (ED) presentations in individuals who no longer meet full criteria for these disorders. To consider this issue, we examined subthreshold presentations in women with initial diagnoses of AN and BN. METHOD: A total of 246 women with AN or BN were followed for a median of 9 years; weekly symptom data were collected at frequent intervals using the Longitudinal Interval Follow-up Evaluation of Eating Disorders (LIFE-EAT-II). Outcomes were ED presentations that were subthreshold for 3 months, including those narrowly missing full criteria for AN or BN, along with binge eating disorder (BED) and purging disorder. RESULTS: During follow-up, most women (77.6%) experienced a subthreshold presentation. Subthreshold presentation was related to intake diagnosis (Wald chi2=8.065, df=2, p=0.018). Individuals with AN most often developed subthreshold presentations resembling AN; those with BN were more likely to develop subthreshold BN. Purging disorder was experienced by half of those with BN and one-quarter of those with AN binge/purge type (ANBP); BED occurred in 20% with BN. Transition from AN or BN to most subthreshold types was associated with improved psychosocial functioning (p<0.001). CONCLUSIONS: Subthreshold presentations in women with lifetime AN and BN were common, resembled the initial diagnosis, and were associated with modest improvements in psychosocial functioning. For most with lifetime AN and BN, subthreshold presentations seem to represent part of the course of illness and to fit within the original AN or BN diagnosis.


Assuntos
Anorexia/classificação , Bulimia Nervosa/classificação , Manual Diagnóstico e Estatístico de Transtornos Mentais , Transtornos da Alimentação e da Ingestão de Alimentos/classificação , Anorexia/diagnóstico , Anorexia/psicologia , Bulimia Nervosa/diagnóstico , Bulimia Nervosa/psicologia , Distribuição de Qui-Quadrado , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Transtornos da Alimentação e da Ingestão de Alimentos/psicologia , Feminino , Humanos , Entrevistas como Assunto , Modelos Lineares , Estudos Longitudinais , Cadeias de Markov , Psicologia , Ajustamento Social , Adulto Jovem
11.
J Clin Endocrinol Metab ; 94(4): 1367-71, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19158192

RESUMO

CONTEXT: Anorexia nervosa is characterized by hypogonadism and relative hypercortisolemia. We have demonstrated that free testosterone levels are low in women with anorexia nervosa, with the lowest levels in those receiving oral contraceptives (OCPs), and that dehydroepiandrosterone (DHEA) sulfate is reduced only in those receiving OCPs. OBJECTIVE: The aim of the study was to determine whether adrenal steroidogenesis dysregulation contributes to decreased androgen levels in anorexia nervosa. DESIGN AND SETTING: We conducted a cross-sectional study in a General Clinical Research Center. STUDY PARTICIPANTS: We studied 20 women with anorexia nervosa [10 women with anorexia nervosa receiving OCPs (AN+E) and 10 not receiving OCPs (AN-E)] and 20 healthy controls [10 healthy controls receiving OCPs (HC+E) and 10 not receiving OCPs (HC-E)]. MAIN OUTCOME MEASURES: We measured DHEA and cortisol levels in response to 250-microg cosyntropin stimulation after 1-mg overnight dexamethasone suppression. RESULTS: Mean basal and stimulated, peak stimulated, and area under the curve (AUC) cortisol levels were higher in AN-E than HC-E, but mean basal and stimulated, peak and AUC DHEA were comparable. Mean AUC and peak cortisol were higher and DHEA AUC was lower in AN+E than AN-E. However, after controlling for cortisol binding globulin levels, peak and AUC cortisol were comparable between AN+E and AN-E. After controlling for albumin levels, AUC DHEA was comparable between AN+E and AN-E. CONCLUSIONS: Adrenal glucocorticoid and androgen precursor secretion are dissociated in anorexia nervosa, with relative hypercortisolemia and a preservation of DHEA secretion. Reduced DHEA response to cosyntropin in women receiving OCPs is attributable to decreased albumin levels. In the setting of relative hypercortisolemia, reduced adrenal androgen precursor secretion is not a mechanism underlying low testosterone levels in anorexia nervosa.


Assuntos
Anorexia Nervosa/sangue , Hidrocortisona/sangue , Adulto , Área Sob a Curva , Anticoncepcionais Orais/farmacologia , Estudos Transversais , Desidroepiandrosterona/sangue , Sulfato de Desidroepiandrosterona/sangue , Feminino , Humanos , Valores de Referência , Testosterona/sangue
12.
Int J Eat Disord ; 40 Suppl: S117-22, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17868122

RESUMO

OBJECTIVE: : The purpose of this article is to summarize major conceptual and clinical variables related to age-appropriate and developmentally appropriate classification of eating problems and disorders in children and adolescents. METHOD: A review of current classifications and related literature in child development is provided. Problems with current classification schemes are identified and discussed. RESULTS: Current classifications are inadequate to address the clinical and research needs of children and adolescents with eating disturbances and disorders. CONCLUSION: A range of possible changes in classification strategies for eating disorders in children and adolescents are described.


Assuntos
Manual Diagnóstico e Estatístico de Transtornos Mentais , Transtornos da Alimentação e da Ingestão de Alimentos/classificação , Adolescente , Idade de Início , Criança , Desenvolvimento Infantil , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Humanos
13.
Klin Monbl Augenheilkd ; 224(4): 344-6, 2007 Apr.
Artigo em Alemão | MEDLINE | ID: mdl-17458810

RESUMO

BACKGROUND: Predisposition is responsible for approximately 50% of age-related cataracts. Investigation of inherited forms of cataract provides the opportunity to identify the genes that may play a role in age-related cataract as well. PATIENTS AND METHODS: We describe the phenotype of a Swiss family with juvenile cataract, associated with microcornea and renal glucosuria. 11 of 17 family members in three generations underwent ophthalmic assessment and urine analysis. Medical records or questionnaires were evaluated in the remaining six cases. RESULTS: Eleven family members had progressive juvenile cataract. Eight affected members available for clinical examination had bilateral microcornea, not associated with microphthalmos. Furthermore, renal glucosuria was demonstrated in six of these persons. The mode of inheritance is autosomal-dominant. CONCLUSIONS: We have defined a new syndrome, consisting of the association of juvenile cataract, microcornea and renal glucosuria. The pattern of inheritance is autosomal-dominant. Genotyping is ongoing.


Assuntos
Catarata/diagnóstico , Catarata/genética , Córnea/anormalidades , Glicosúria Renal/diagnóstico , Glicosúria Renal/genética , Adolescente , Adulto , Córnea/patologia , Família , Feminino , Heterozigoto , Humanos , Masculino , Pessoa de Meia-Idade , Linhagem , Síndrome
14.
J Clin Endocrinol Metab ; 92(4): 1334-9, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17284620

RESUMO

CONTEXT: Anorexia nervosa and normal-weight hypothalamic amenorrhea are characterized by hypogonadism and hypercortisolemia. However, it is not known whether these endocrine abnormalities result in reductions in adrenal and/ or ovarian androgens or androgen precursors in such women, nor is it known whether relative androgen deficiency contributes to abnormalities in bone density and body composition in this population. OBJECTIVE: Our objective was to determine whether endogenous androgen and dehydroepiandrosterone sulfate (DHEAS) levels: 1) are reduced in women with anorexia nervosa and normal-weight hypothalamic amenorrhea, 2) are reduced further by oral contraceptives in women with anorexia nervosa, and 3) are predictors of weight, body composition, or bone density in such women. DESIGN AND SETTING: We conducted a cross-sectional study at a general clinical research center. STUDY PARTICIPANTS: A total of 217 women were studied: 137 women with anorexia nervosa not receiving oral contraceptives, 32 women with anorexia nervosa receiving oral contraceptives, 21 normal-weight women with hypothalamic amenorrhea, and 27 healthy eumenorrheic controls. MAIN OUTCOME MEASURES: Testosterone, free testosterone, DHEAS, bone density, fat-free mass, and fat mass were assessed. RESULTS: Endogenous total and free testosterone, but not DHEAS, were lower in women with anorexia nervosa than in controls. More marked reductions in both free testosterone and DHEAS were observed in women with anorexia nervosa receiving oral contraceptives. In contrast, normal-weight women with hypothalamic amenorrhea had normal androgen and DHEAS levels. Lower free testosterone, total testosterone, and DHEAS levels predicted lower bone density at most skeletal sites measured, and free testosterone was positively associated with fat-free mass. CONCLUSIONS: Androgen levels are low, appear to be even further reduced by oral contraceptive use, and are predictors of bone density and fat-free mass in women with anorexia nervosa. Interventional studies are needed to confirm these findings and determine whether oral contraceptive use, mediated by reductions in endogenous androgen levels, is deleterious to skeletal health in such women.


Assuntos
Amenorreia/sangue , Androgênios/sangue , Anorexia Nervosa/sangue , Sulfato de Desidroepiandrosterona/sangue , Doenças Hipotalâmicas/sangue , Tecido Adiposo/anatomia & histologia , Adulto , Índice de Massa Corporal , Peso Corporal , Densidade Óssea , Anticoncepcionais Orais , Estudos Transversais , Feminino , Humanos , Valores de Referência
15.
Eur J Clin Invest ; 36(6): 389-94, 2006 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-16684122

RESUMO

BACKGROUND: To determine how leptin and ghrelin are expressed in the adipose tissues of obese adults undergoing gastric banding (LAGB), and to correlate tissue expression with serum concentrations and parameters of the metabolic syndrome. MATERIALS AND METHODS: A cross-sectional analysis of 92 patients: 61 obese patients with a body mass index (BMI) 49.2 +/- 1 kg m(-2) received LAGB, 20 patients underwent band exchange (BMI, 36.6 +/- 1.4 kg m(-2)) and 11 adult patients (BMI, 24.3 +/- 0.6 kg m(-2)) with fundoplication served as controls. Clinical data such as BMI and blood pressure were evaluated along with subcutaneous and visceral adipose tissue gene expression and fasting levels of leptin and ghrelin. Tissue transcripts were measured using real-time PCR, serum protein concentrations radio-immunologically. RESULTS: Leptin gene expression was highest in the primary LAGB group and more pronounced in subcutaneous fat in both sexes (P < 0.0001). Serum leptin concentrations were highest in the LAGB group (P < 0.001), whereby women exhibited higher serum levels than men. Leptin concentrations correlated positively to expression in subcutaneous fat (P < 0.0001), and leptin expression was also correlated to BMI and systolic blood pressure. We detected ghrelin gene expression in both types of fat. The ghrelin mRNA amounts in adipose tissues were similar in both sexes and comparable within groups; serum concentrations were lower in patients with primary LAGB than in controls (P < 0.05). CONCLUSIONS: Human adipose tissue expression of leptin is weight-course dependent and ghrelin is constitutional. Serum levels of leptin, but not of ghrelin, are indicative of an adaptive pattern of local gene expression in obese subjects undergoing weight reduction.


Assuntos
Tecido Adiposo/metabolismo , Gastroplastia , Leptina/biossíntese , Obesidade Mórbida/metabolismo , Hormônios Peptídicos/biossíntese , Adulto , Pressão Sanguínea , Índice de Massa Corporal , Estudos Transversais , Feminino , Expressão Gênica , Grelina , Humanos , Leptina/sangue , Leptina/genética , Masculino , Pessoa de Meia-Idade , Obesidade Mórbida/sangue , Obesidade Mórbida/fisiopatologia , Obesidade Mórbida/cirurgia , Hormônios Peptídicos/sangue , Hormônios Peptídicos/genética , RNA Mensageiro/genética , Gordura Subcutânea/metabolismo
16.
Psychol Med ; 34(5): 843-53, 2004 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-15500305

RESUMO

BACKGROUND: Suicide is a common cause of death in anorexia nervosa and suicide attempts occur often in both anorexia nervosa and bulimia nervosa. No studies have examined predictors of suicide attempts in a longitudinal study of eating disorders with frequent follow-up intervals. The objective of this study was to determine predictors of serious suicide attempts in women with eating disorders. METHOD: In a prospective longitudinal study, women diagnosed with either DSM-IV anorexia nervosa (n = 136) or bulimia nervosa (n = 110) were interviewed and assessed for suicide attempts and suicidal intent every 6-12 months over 8.6 years. RESULTS: Fifteen percent of subjects reported at least one prospective suicide attempt over the course of the study. Significantly more anorexic (22.1%) than bulimic subjects (10.9%) made a suicide attempt. Multivariate analyses indicated that the unique predictors of suicide attempts for anorexia nervosa included the severity of both depressive symptoms and drug use over the course of the study. For bulimia nervosa, a history of drug use disorder at intake and the use of laxatives during the study significantly predicted suicide attempts. CONCLUSIONS: Women with anorexia nervosa or bulimia nervosa are at considerable risk to attempt suicide. Clinicians should be aware of this risk, particularly in anorexic patients with substantial co-morbidity.


Assuntos
Transtornos da Alimentação e da Ingestão de Alimentos/epidemiologia , Tentativa de Suicídio/estatística & dados numéricos , Adolescente , Adulto , Anorexia Nervosa/diagnóstico , Anorexia Nervosa/epidemiologia , Bulimia/diagnóstico , Bulimia/epidemiologia , Manual Diagnóstico e Estatístico de Transtornos Mentais , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos
17.
J Clin Endocrinol Metab ; 89(9): 4434-8, 2004 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-15356043

RESUMO

Anorexia nervosa (AN) is characterized by low weight and self-imposed caloric restriction and leads to severe bone loss. Although amenorrhea due to acquired GnRH deficiency is nearly universal in AN, a subset of patients maintains menses despite low weight. The mechanisms underlying continued GnRH secretion despite low weight in these patients and the impact of gonadal hormone secretion on bone mineral density (BMD) in such eumenorrheic, low-weight patients remain unknown. We hypothesized that 1) eumenorrheic women with AN would have higher body fat and levels of nutritionally dependent hormones, including leptin and IGF-I, than amenorrheic women with AN and comparable body mass index; and 2) BMD would be higher in these women. We also investigated whether the severity of eating disorder symptomatology differed between the groups. We studied 116 women: 1) 42 low-weight women who fulfilled all Diagnostic and Statistical Manual of Mental Disorders (fourth edition) diagnostic criteria for AN, except for amenorrhea; and 2) 74 women with AN and amenorrhea for at least 3 months. The two groups were similar in body mass index (17.1 +/- 0.2 vs. 16.8 +/- 0.2 kg/m(2)), percent ideal body weight (78.2 +/- 0.8% vs. 76.7 +/- 0.8%), duration of eating disorder (70 +/- 13 vs. 59 +/- 9 months), age of menarche (13.2 +/- 0.3 vs. 13.5 +/- 0.2 yr), and exercise (4.5 +/- 1.0 vs. 4.2 +/- 0.5 h/wk). As expected, eumenorrheic patients had a higher mean estradiol level (186.6 +/- 19.0 vs. 59.4 +/- 2.5 nmol/liter; P < 0.0001) than amenorrheic subjects. Mean percent body fat, total body fat mass, and truncal fat were higher in eumenorrheic than amenorrheic patients [20.9 +/- 0.9% vs. 16.7 +/- 0.6% (P = 0.0001); 9.8 +/- 0.5 vs. 7.8 +/- 0.3 kg (P = 0.0009); 3.4 +/- 0.2 vs. 2.7 +/- 0.1 kg (P = 0.006)]. The mean leptin level was higher in the eumenorrheic compared with the amenorrheic group (3.7 +/- 0.3 vs. 2.8 +/- 0.2 ng/ml; P = 0.04). Serum IGF-I levels were also higher in the eumenorrheic than in the amenorrheic group (41.8 +/- 3.7 vs. 30.8 +/- 2.3 nmol/liter; P = 0.02). There were only minor differences in severity of eating disorder symptomatology, as measured by the Eating Disorders Inventory, and where differences were observed, eumenorrheic subjects manifested more severe symptomatology than amenorrheic subjects. Mean BMD at the posterior-anterior and lateral spine were low in both groups, but were higher in patients with eumenorrhea than in those with amenorrhea [posterior-anterior spine T-score, -0.9 +/- 0.1 vs. -1.9 +/- 0.1 (P < 0.0001); lateral spine T-score, -1.2 +/- 0.1 vs. -2.3 +/- 0.2 (P < 0.0001)]. In contrast, preservation of menstrual function was not protective at the total hip (total hip T-score, -0.9 +/- 0.1 vs. -1.1 +/- 0.1; P = 0.27), trochanter, or femoral neck. In summary, patients with eumenorrhea had more body fat and higher serum leptin levels than their amenorrheic counterparts of similar weight. Moreover, reduced bone density was observed in both groups, but was less severe at the spine, but not the hip, in women with undernutrition and preserved menstrual function than in amenorrheic women of similar weight. Therefore, fat mass may be important for preservation of normal menstrual function in severely undernourished women, and this may be in part mediated through leptin secretion. In addition, nutritional intake and normal hormonal function may be independent contributors to maintenance of trabecular bone mass in low-weight women.


Assuntos
Amenorreia/fisiopatologia , Sistema Hipotálamo-Hipofisário/fisiologia , Desnutrição/fisiopatologia , Menstruação , Adulto , Anorexia Nervosa/complicações , Anorexia Nervosa/psicologia , Composição Corporal , Índice de Massa Corporal , Densidade Óssea , Estradiol/sangue , Feminino , Humanos , Fator de Crescimento Insulin-Like I/análise , Leptina/sangue , Leptina/fisiologia
18.
Can J Gastroenterol ; 17(3): 179-82, 2003 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-12677267

RESUMO

UNLABELLED: In asphyxiated newborn infants, cholestasis often leads to extensive investigations and a cause can rarely be found. OBJECTIVE: To assess the frequency of transient neonatal cholestasis in an unselected group of asphyxiated newborn infants in a mother-child centre. METHOD: Charts of 181 asphyxiated newborn infants born with appropriate birth weight for gestational age (AGA) or small weight for gestational age (SGA) at Sainte-Justine Hospital, Montreal, Quebec between 1989 and 1993 were reviewed. RESULTS: Transient neonatal cholestasis was found in 8.5% of asphyxiated AGA and 33% of SGA newborn infants, compared with 3.94% cholestasis of any etiology in nonasphyxiated SGA infants. Asphyxiated neonates born before the age of 35 weeks had an increased risk for transient neonatal cholestasis (odds ratio 2.84, CI 1.0-8.1) CONCLUSION: Transient neonatal cholestasis is associated with several contributing factors related to the severity of the neonatal distress. Asphyxia is frequently accompanied by cholestasis in this group of newborns and without symptoms other than uncomplicated cholestasis. Investigations should be focussed on conditions requiring immediate therapy.


Assuntos
Asfixia Neonatal/complicações , Colestase/etiologia , Índice de Apgar , Asfixia Neonatal/diagnóstico , Asfixia Neonatal/terapia , Peso ao Nascer , Colestase/diagnóstico , Colestase/terapia , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Masculino , Respiração Artificial/efeitos adversos , Estudos Retrospectivos , Fatores de Risco , Índice de Gravidade de Doença , Fatores Sexuais , Fatores de Tempo
19.
Pediatr Transplant ; 6(5): 443-6, 2002 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12390436

RESUMO

An 8-yr-old-patient was diagnosed with COACH syndrome at the moment of her first bleeding episode from esophageal varices. Investigations revealed biliary cirrhosis as the cause of portal hypertension, no visible kidney cyst or impairment of renal function, cerebellar dysplasia with non-disabling ataxia, and minimal mental retardation. By the age of 12 yr she had developed liver insufficiency and, after a challenging discussion, underwent a liver transplantation. She subsequently developed an abdominal aspergillosis, which required several abdominal explorations and splenectomy as well as 6 months of therapy with liposomal amphotericin B, but survived and in long-term follow-up is in good health, with completed puberty, and has finished school.


Assuntos
Anormalidades Múltiplas , Deficiência Intelectual , Cirrose Hepática/cirurgia , Ataxia Cerebelar , Criança , Feminino , Humanos , Complicações Pós-Operatórias , Síndrome
20.
Am J Psychiatry ; 158(9): 1461-6, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11532732

RESUMO

OBJECTIVE: This study reported pregnancy complications and neonatal outcomes for 49 live births in a group of women with eating disorders who were prospectively followed. METHOD: Subjects were recruited from 246 women participating in a longitudinal study of anorexia nervosa and bulimia nervosa, now in its 12th year. Subjects were interviewed by trained assistants and completed a brief self-report instrument that assessed both birth statistics and birth-related complications. Medical records and/or self-report data describing the neonates' birth status were obtained. RESULTS: The majority of the women with eating disorders had normal pregnancies, resulting in healthy babies. Across the group, the mean length of pregnancy was 38.7 weeks, the mean birth weight was 7.6 lb, and mean Apgar scores at 1 and 5 minutes after birth were 8.2 and 9.0, respectively. Most outcomes were positive; however, three babies (6.1%) had birth defects, and 17 (34.7%) of the women experienced postpartum depression. The mean number of obstetric complications in the group was 1.3, and 13 (26.5%) of the women delivered by cesarean section. Women who showed symptoms of either anorexia nervosa or bulimia nervosa during pregnancy had a higher frequency of birth by cesarean section and postpartum depression than did nonsymptomatic women. CONCLUSIONS: Pregnant women with active eating disorders appear to be at greater risk for delivery by cesarean section and for postpartum depression. Pregnant women with past or current eating disorders should be viewed as being at high risk and monitored closely both during and after pregnancy to optimize maternal and fetal outcomes.


Assuntos
Transtornos da Alimentação e da Ingestão de Alimentos/epidemiologia , Complicações na Gravidez/epidemiologia , Resultado da Gravidez/epidemiologia , Adulto , Anorexia Nervosa/diagnóstico , Anorexia Nervosa/epidemiologia , Índice de Apgar , Peso ao Nascer , Bulimia/diagnóstico , Bulimia/epidemiologia , Cesárea/estatística & dados numéricos , Comorbidade , Anormalidades Congênitas/diagnóstico , Anormalidades Congênitas/epidemiologia , Depressão Pós-Parto/diagnóstico , Depressão Pós-Parto/epidemiologia , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Feminino , Seguimentos , Humanos , Complicações do Trabalho de Parto/diagnóstico , Complicações do Trabalho de Parto/epidemiologia , Gravidez , Complicações na Gravidez/diagnóstico , Estudos Prospectivos , Escalas de Graduação Psiquiátrica/estatística & dados numéricos , Fatores de Risco , Índice de Gravidade de Doença
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