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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Endocrine sequelae of irradiation in childhood

Ogilvy-Stuart, Amanda Lesley January 1993 (has links)
No description available.
2

Effects of growth hormone treatment on intermediary metabolism and cardiovascular risk factors in adult hypopituitarism

Chrisoulidou, Alexandra January 2002 (has links)
No description available.
3

Detection of Anti-hGH Antibodies in Serum Samples of Children Treated with RhGH

Ritter, Nina 22 October 2012 (has links) (PDF)
The present study deals with the comparison and establishment of methods for the detection of antibodies against recombinant human growth hormone (rhGH). Therefore, different methods for the detection of hGH-Abs were evaluated and compared in order to establish a test system that can be used for the detection of neutralizing antibodies against hGH, which could be developed under rhGH treatment. This manuscript describes in detail the validation of a newly developed biological assay, the neutralizing hGH-antibody assay (NAb assay). Therefore, a cell line transfected with the growth hormone receptor, that proliferates in the presence of hGH, was used. This proliferation was quantified by an increase of the optical density (OD/ absorbance) after addition of a colorimetric reagent, whereas the presence of hGH-antibodies leads to an inhibition of cell proliferation. To validate the test system for the detection of hGH-antibodies, we tested serum samples of 4 patients suffering from neurosecretory dysfunction (NSD) and samples taken from 6 patients with growth hormone deficiency (GHD) which were treated with rhGH and were highly suspected for a-hGH antibodies. These samples were tested in two different immunological assays, capable to screen sera for anti-hGH immunreactivity in the case of hGH-insensitivity during GH treatment. Using the NAb assay the neutralizing activity of specific hGH-antibodies was proved in serum samples of NSD and GHD type 1A patients. In case of neutralizing hGH-antibody activity, a clinically based decision can be made whether rhGH therapy should be stopped or the rhGH dosis should be increased. By the use of our test system, we offer the measurement of anti-hGH-antibody activity to other laboratories in cases when secondary hGH-insensitivity is assumed or observed.
4

Avaliação laríngea e vocal em indivíduos com deficiência isolada do hormônio de crescimento (DIGH) / Laryngeal and vocal evaluation in isolated growth hormone deficiency (IGHD) individuals.

Barreto, Valéria Maria Prado 04 May 2007 (has links)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The voice on congenital isolated growth hormone deficiency (IGHD) is commonly refered high pitched voice . However, vocal and laryngeal data are rare within literature. In Itabaianinha County, Northeast Brazil, it had been described the most extend kindred with severe IGHD due to a GH-realising hormone receptor (GHRHR) gene mutation. The aim of this descriptive transversal study was to evaluate vocal and laryngeal affections in this group. 23 subjects with IGHD were studied, being 6 males and 17 females They were submitted to an otorhinolaryngological evaluation and strobovideolaryngoscopic exam. Besides, a speech evaluation like hearing perception analysis (GRBAS scale) and objective voice evaluation (maximum phonatory time, s/z ratio and acoustic analysis) were also used. The results were performed using qui-square, exact Fisher and unpaired t test (p<0,05). The main vocal complaints were vocal fatigue (36,36%), hoarsenesses (31,81%), sore throat (27,27%), neckache (27,27%), phonatory pain (22,72%) and aphonia (18,18%). No male presented any complaint. Based on findings, vocal abuse (72,72%), etilism (45,45%) and smoking (36,36%) were considered like nocive habits to normal voice. 72,7% of the subjects presented abnormal voice and 27,3% were the normal ones. Amongst the abnormal voice, the mild/moderate grade was prevalent, with the presence of roughness, breathiness and strain. The strobovideoalaryngoscopic exam in 21 subjects showed laryngopharyngeal reflux signs (66,66%), functional dysphonia (52,38%), vocal nodules (23,80%) and vocal cysts (9,52%). There was significant association between vocal complaints and grade of abnormal voice. There weren t association between abnormal voice and laryngeal diseases; nocive habits and abnormal voice; nocive habits and laryngeal diseases; laryngopharyngeal reflux signs and functional dysphonia; vocal complaint and laryngeal diseases. The maximum phonatory time was lower than 10s and s/z ratio was 1,19. In acoustic analysis, fundamental frequency was 221,06 Hz in females and 204,67 Hz in males. There wasn t statistical dependency between genders showing high pitch and dominance IGHD effect above gender. There wasn t statistical dependency between normal and abnormal voice in acoustic analysis neither. Conclusions: Voice presents high pitch in both genders and the most commonly abnormalities were roughness, breathiness and strain. The mild/moderate grade was prevalent. Laryngopharyngeal reflux signs and functional dysphonia were the most reached diagnostics using strobovideolaryngoscopic exam. / A voz na deficiência isolada do hormônio de crescimento (DIGH) de início na infância é comumente referida como voz de caráter agudo, porém dados laríngeos e vocais são escassos na literatura. Na cidade de Itabaianinha-SE, no nordeste brasileiro, foi descrito o maior agrupamento familiar com DIGH severa, devido a uma mutação no gene do receptor do hormônio liberador do hormônio do crescimento (GHRHR). O objetivo do presente estudo foi avaliar alterações laríngeas e vocais nessa população, realizando-se um estudo transversal descritivo. Foram, então, estudados 23 indivíduos com DIGH, sendo 6 do sexo masculino e 17 do sexo feminino. Eles foram submetidos à avaliação otorrinolaringológica geral por entrevista e exame videolaringoestroboscópico. Avaliou-se também o grau de alteração na qualidade vocal, através da análise perceptivo-auditiva (escala GRBAS) e avaliação objetiva da voz (tempo máximo de fonação, relação s/z e análise acústica). Para comparação entre os achados, utilizou-se teste do quiquadrado e exato de Fisher (p<0,05) e entre os sexos, na análise acústica, teste t para amostras independentes (p<0,05). As principais queixas vocais relatadas foram cansaço vocal (36,36%), rouquidão (31,81%), pigarro (27,27%), dor cervical (27,27%), dor à fonação (22,72%) e perda da voz (18,18%). Nenhum indivíduo do sexo masculino apresentou queixa. Os principais hábitos nocivos à saúde vocal foram abuso vocal (72,72%), etilismo (45,45%), tabagismo (36,36%). Foram detectadas 72,7% de vozes alteradas e 27,3% de vozes normais. Dentre as alteradas, o grau leve/moderado foi preponderante, com presença de rouquidão/aspereza, soprosidade e tensão. A videolaringoestroboscopia foi realizada em 21 sujeitos e evidenciou sinais sugestivos de refluxo laringo-faríngeo (66,66%), disfonia funcional (52,38%), nódulos (23,80%) e cisto (9,52%). Houve também associação significativa entre queixas vocais e grau de alteração vocal. Porém, não houve associação significativa entre tipo de voz e doenças detectadas; hábitos nocivos e tipo de voz; hábitos nocivos e doenças detectadas; sinais sugestivos de refluxo laringofaríngeo e disfonia funcional; queixa vocal e doença. Na avaliação objetiva da voz, o tempo máximo de fonação foi abaixo de 10s em todas as variáveis e relação s/z de 1,19 . Na análise acústica, a freqüência fundamental foi 221,06 Hz, em mulheres, e 204,67 Hz, nos homens, sem diferença estatística, caracterizando um patamar agudo e um efeito dominante da DIGH sobre o sexo, nesta variável. Também não houve diferença estatística entre tipo de voz alterada e normal, nas variáveis da análise acústica. Conclusões: a voz foi aguda em ambos os sexos, sendo as alterações vocais mais freqüentes rouquidão/aspereza, soprosidade e tensão, grau leve/moderado. Os sinais sugestivos de refluxo laringo-faríngeo e disfonia funcional foram os achados mais comuns na videolaringoestroboscopia.
5

Effects of growth hormone on thyroid function are mediated by type 2 iodothyronine deiodinase in humans / 成長ホルモンの甲状腺機能に対する作用はヒトにおいて2型甲状腺ホルモン脱ヨード酵素を介する

Yamauchi, Ichiro 25 March 2019 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(医学) / 甲第21640号 / 医博第4446号 / 新制||医||1034(附属図書館) / 京都大学大学院医学研究科医学専攻 / (主査)教授 髙折 晃史, 教授 大森 孝一, 教授 岩田 想 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DFAM
6

Long-Term Outcomes, Genetics, and Pituitary Morphology in Patients with Isolated Growth Hormone Deficiency and Multiple Pituitary Hormone Deficiencies: A Single-Centre Experience of Four Decades of Growth Hormone Replacement

Rohayem, Julia, Drechsel, Hendrik, Tittel, Bettina, Hahn, Gabriele, Pfäffle, Roland, Hübner, Angela 22 May 2020 (has links)
Background: Growth hormone (GH) has been used to treat children with GH deficiency (GHD) since 1966. Aims: Using a combined retrospective and cross-sectional approach, we explored the long-term outcomes of patients with GHD, analysed factors influencing therapeutic response, determined persistence into adulthood, investigated pituitary morphology, and screened for mutations in causative genes. Methods: The files of 96 GH-deficient children were reviewed. In a subset of 50 patients, re-assessment in adulthood was performed, including GHRH-arginine testing, pituitary magnetic resonance imaging (MRI), and mutational screening for the growth hormone-1 gene (GH1) and the GHRH receptor gene (GHRHR) in isolated GHD (IGHD), and HESX1 , PROP1 , POU1F1 , LHX3 , LHX4 , and GLI2 in multiple pituitary hormone deficiency (MPHD) patients. Results: GH was started at a height SDS of –3.2 ± 1.4 in IGHD patients and of –4.1 ± 2.1 in MPHD patients. Relative height gain was 0.3 SDS/year, absolute gain 1.6 SDS, and 1.2/2.6 SDS in IGHD/MPHD, respectively. Mid-parental target height was reached in 77%. Initial height SDS, bone age retardation and duration of GH replacement were correlated with height SDS gain. GHD persisted into adulthood in 19 and 89% of subjects with IGHD and MPHD, respectively. In 1/42 IGHD patients a GH1 mutation was detected; PROP1 mutations were found in 3/7 MPHD subjects. Anterior pituitary hypoplasia, combined with posterior pituitary ectopy and pituitary stalk invisibility on MRI, was an exclusive finding in MPHD patients. Conclusions: GH replacement successfully corrects the growth deficit in children with GHD. While the genetic aetiology remains undefined in most cases of IGHD, PROP1 mutations constitute a major cause for MPHD. Persistence of GHD into adulthood is related to abnormal pituitary morphology.
7

Papel da leptina no crescimento sem GH de crianças e adolescentes portadores de craniofaringioma / Leptin role in the metabolism of children and adolescents with craniopharyngioma

Baságlia, Glaucimar Martins Michetti 11 July 2007 (has links)
O craniofaringioma (CF) é o tumor das regiões selar e supra-selar mais comum na infância, que cursa com deficiências hipofisárias, principalmente do hormônio de crescimento (GH). As crianças afetadas apresentam redução da velocidade de crescimento (VC) e baixa estatura, mas após a ressecção do tumor, há relatos de pacientes com crescimento normal ou até aumentado mesmo deficientes em GH (DGH). Os mecanismos deste evento não são claros, mas há associações com o ganho de peso. Recentemente foram descritas relações diretas entre a leptina, o GH e o índice de massa corpórea (IMC). Com os objetivos de estabelecer correlações entre a leptina e a velocidade de crescimento (VC) e com o IMC, de correlacionar a leptina e o IGF-I com GH, e de verificar se o GH exógeno modifica o perfil de leptina nos portadores de CF e DGH, foram estudados 15 pacientes portadores de CF, sendo sete meninos e oito meninas, menores de 18 anos, deficientes em GH e impúberes. Os pacientes foram divididos em dois grupos (1 e 2) quanto à reposição com GH em tratados e não-tratados, respectivamente, e foram avaliados quanto a VC, IMC, leptinemia, insulinemia, lipidograma e IGF-I nos dois primeiros anos após a primeira cirurgia. Foi estabelecida correlação entre o IMC e a leptinemia e, para os pacientes do grupo 2, foram estabelecidas correlações entre a VC e o IGF-I, a insulinemia, o índice HOMA e a leptinemia. Após a primeira neurocirurgia, 13 pacientes cursaram com hipocortisolismo, 11 com diabetes insipidus definitivo, 12 com hipotiroidismo e todos com deficiência de GH. As medianas dos valores de Z-escore das velocidades de crescimento (Z-VC) no primeiro e segundo anos, respectivamente ,foram: no grupo 1, 0,61 e -1,86; e no grupo 2, 0,85 e 0,94. Os valores do Z-IMC final do grupo 1 variaram de -0,24 a 2,74, e no grupo 2, de -0,12 a 2,88. Não houve correlação entre o Z-IMC e o Z-VC. Os pacientes apresentaram hiperleptinemia (MZ-leptina = 10,58 e DP = 14,08), com correlação positiva entre os valores de leptina e o Z-IMC final (P = 0,0095). Não houve correlação entre os valores da leptina e o Z-VC. A correlação entre a insulina e o Z-IMC foi significante apenas no grupo 1 (P = 0,001). A insulina não se correlacionou com a VC no grupo 2. A correlação entre o IGF-I e a VC foi positiva apenas no primeiro ano (P = 0,007). Não houve diferença estatisticamente significante entre a leptina e o IGF-I, nos pacientes do grupo 2. Concluímos que houve correlação positiva entre os valores de leptina e o IMC nos pacientes portadores de CF e DGH; não houve correlação entre a leptina e a VC; não houve correlação positiva entre o IGF I e a leptina dos pacientes com CF e DGH não-tratados com hGH e não houve diferença estatística dos valores de leptina entre os grupos tratados e não-tratados. / Craniopharyngioma (CF) is a tumor of the sellar and suprasellar regions, more commonly found in children, its course being associated with hypophyseal hormones deficiency, especially growth hormone (GHD). Affected children have reduced growth rates (GR) and short stature. However, after tumor resection, patients have been reported to exhibit normal or increased growth rates, even in the presence of GH deficiency. The underlying mechanisms to this phenomenon are not clear, yet they are known to be associated with weight gain. Recently, a direct relation between leptin, GH and the body mass index (BMI) has been reported. With the objective of establishing correlations between leptin, growth rate (GR) and BMI; correlate leptin and IGF-I with GH, and verify if exogenous GH modifies the leptin profile in patients with CF and GHD, 15 GH-deficient and impuberal patients with CF, 7 boys and 8 girls, under the age of 18, were studied. According to the use of GH replacement therapy, patients were divided into 2 groups (1 and 2), respectively treated and non treated, and were evaluated for GR and BMI, leptinemia, insulinemia, lipidogram and IGF-I during the first 2 years after the first surgery. Correlation was established between BMI and leptinemia and, for the patients in group 2, correlations were established between GR and IGF-I, insulinemia, the HOMA index and leptinemia. After the first neurosurgery, 13 patients evolved with hypocortisolism, 11 with established diabetes insipidus, 12 with hypothyroidism and all patients were GH-deficient. Mean growth rate Z-score values (Z-GR) in the 1st and 2nd year, respectively, were: group 1: 0.61 and 1.86 and group 2: 0.85 and 0.94. Final Z-BMI values ranged from -0.24 to 2.74 for group 1 and from -0.12 to 2.88 for group 2. There was no correlation between Z-BMI and Z-GR. The patients showed hyperleptinemia (MZ-leptin = 10.58; SD = 14.08), with positive correlation between leptin values and the final Z-BMI (P=0.0095). There was no correlation between leptin values and Z-GR. The correlation between insulin and Z-BMI was only significant in group 1 (P = 0.001). Insulin did not correlate with GR in group 2. The correlation between IGF-I and GR was only positive in the 1st year (P = 0.007). There was t correlation between leptin and the IGF I in group 2. We conclude that there was a positive correlation between leptin values and the IMC in patients with CF and DGH; there was no correlation between leptin and GR; there was no positive correlation between IGF I and leptin in patients with CF and GHD not treated with hGH, and there was no statistical difference in leptin values between treated and non-treated groups.
8

Papel da leptina no crescimento sem GH de crianças e adolescentes portadores de craniofaringioma / Leptin role in the metabolism of children and adolescents with craniopharyngioma

Glaucimar Martins Michetti Baságlia 11 July 2007 (has links)
O craniofaringioma (CF) é o tumor das regiões selar e supra-selar mais comum na infância, que cursa com deficiências hipofisárias, principalmente do hormônio de crescimento (GH). As crianças afetadas apresentam redução da velocidade de crescimento (VC) e baixa estatura, mas após a ressecção do tumor, há relatos de pacientes com crescimento normal ou até aumentado mesmo deficientes em GH (DGH). Os mecanismos deste evento não são claros, mas há associações com o ganho de peso. Recentemente foram descritas relações diretas entre a leptina, o GH e o índice de massa corpórea (IMC). Com os objetivos de estabelecer correlações entre a leptina e a velocidade de crescimento (VC) e com o IMC, de correlacionar a leptina e o IGF-I com GH, e de verificar se o GH exógeno modifica o perfil de leptina nos portadores de CF e DGH, foram estudados 15 pacientes portadores de CF, sendo sete meninos e oito meninas, menores de 18 anos, deficientes em GH e impúberes. Os pacientes foram divididos em dois grupos (1 e 2) quanto à reposição com GH em tratados e não-tratados, respectivamente, e foram avaliados quanto a VC, IMC, leptinemia, insulinemia, lipidograma e IGF-I nos dois primeiros anos após a primeira cirurgia. Foi estabelecida correlação entre o IMC e a leptinemia e, para os pacientes do grupo 2, foram estabelecidas correlações entre a VC e o IGF-I, a insulinemia, o índice HOMA e a leptinemia. Após a primeira neurocirurgia, 13 pacientes cursaram com hipocortisolismo, 11 com diabetes insipidus definitivo, 12 com hipotiroidismo e todos com deficiência de GH. As medianas dos valores de Z-escore das velocidades de crescimento (Z-VC) no primeiro e segundo anos, respectivamente ,foram: no grupo 1, 0,61 e -1,86; e no grupo 2, 0,85 e 0,94. Os valores do Z-IMC final do grupo 1 variaram de -0,24 a 2,74, e no grupo 2, de -0,12 a 2,88. Não houve correlação entre o Z-IMC e o Z-VC. Os pacientes apresentaram hiperleptinemia (MZ-leptina = 10,58 e DP = 14,08), com correlação positiva entre os valores de leptina e o Z-IMC final (P = 0,0095). Não houve correlação entre os valores da leptina e o Z-VC. A correlação entre a insulina e o Z-IMC foi significante apenas no grupo 1 (P = 0,001). A insulina não se correlacionou com a VC no grupo 2. A correlação entre o IGF-I e a VC foi positiva apenas no primeiro ano (P = 0,007). Não houve diferença estatisticamente significante entre a leptina e o IGF-I, nos pacientes do grupo 2. Concluímos que houve correlação positiva entre os valores de leptina e o IMC nos pacientes portadores de CF e DGH; não houve correlação entre a leptina e a VC; não houve correlação positiva entre o IGF I e a leptina dos pacientes com CF e DGH não-tratados com hGH e não houve diferença estatística dos valores de leptina entre os grupos tratados e não-tratados. / Craniopharyngioma (CF) is a tumor of the sellar and suprasellar regions, more commonly found in children, its course being associated with hypophyseal hormones deficiency, especially growth hormone (GHD). Affected children have reduced growth rates (GR) and short stature. However, after tumor resection, patients have been reported to exhibit normal or increased growth rates, even in the presence of GH deficiency. The underlying mechanisms to this phenomenon are not clear, yet they are known to be associated with weight gain. Recently, a direct relation between leptin, GH and the body mass index (BMI) has been reported. With the objective of establishing correlations between leptin, growth rate (GR) and BMI; correlate leptin and IGF-I with GH, and verify if exogenous GH modifies the leptin profile in patients with CF and GHD, 15 GH-deficient and impuberal patients with CF, 7 boys and 8 girls, under the age of 18, were studied. According to the use of GH replacement therapy, patients were divided into 2 groups (1 and 2), respectively treated and non treated, and were evaluated for GR and BMI, leptinemia, insulinemia, lipidogram and IGF-I during the first 2 years after the first surgery. Correlation was established between BMI and leptinemia and, for the patients in group 2, correlations were established between GR and IGF-I, insulinemia, the HOMA index and leptinemia. After the first neurosurgery, 13 patients evolved with hypocortisolism, 11 with established diabetes insipidus, 12 with hypothyroidism and all patients were GH-deficient. Mean growth rate Z-score values (Z-GR) in the 1st and 2nd year, respectively, were: group 1: 0.61 and 1.86 and group 2: 0.85 and 0.94. Final Z-BMI values ranged from -0.24 to 2.74 for group 1 and from -0.12 to 2.88 for group 2. There was no correlation between Z-BMI and Z-GR. The patients showed hyperleptinemia (MZ-leptin = 10.58; SD = 14.08), with positive correlation between leptin values and the final Z-BMI (P=0.0095). There was no correlation between leptin values and Z-GR. The correlation between insulin and Z-BMI was only significant in group 1 (P = 0.001). Insulin did not correlate with GR in group 2. The correlation between IGF-I and GR was only positive in the 1st year (P = 0.007). There was t correlation between leptin and the IGF I in group 2. We conclude that there was a positive correlation between leptin values and the IMC in patients with CF and DGH; there was no correlation between leptin and GR; there was no positive correlation between IGF I and leptin in patients with CF and GHD not treated with hGH, and there was no statistical difference in leptin values between treated and non-treated groups.
9

Qualidade de vida na deficiência isolada e genética do hormônio de crescimento (GH). Efeitos da terapia de reposição com o GH

Barbosa, Jorge Antônio Rodrigues 09 November 2007 (has links)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Reduction in the quality of life (QOL) is commonly described in the growth hormone (GH) deficiency, with reports of benefits of GH replacement therapy in QOL. In most of the descriptions, GH deficiency is not isolated, of adult onset type and has multiple causes with its respective treatments that by themselves can influence QOL. In the present work we evaluated (QOL) by the questionnaire Questions on Life Satisfaction Hypopituitarism Module (QLS-H) in 20 adult with isolated deficiency of GH (IGHD) due to a mutation in the GH releasing hormone receptor gene (IGHD, 10 men) comparing with 20 controls (CO, 10 men). Additionally IGHD group was evaluated after 6 months of treatment with long acting GH (Nutropin Depot®, Genentech ) given subcutaneously every 15 days ( pGH) and after 12 months of its interruption (12M). There was not difference in the total score of QOL (TSQOL) among the groups IGHD and CO, 90(50,25) and 93 (79,25) respectively, median (interquartile range) and nor in any of the nine categories that composes the TSQOL. Similar results were obtained when data were analyzed by sex. Despite modest but significant trough serum insulin like growth factor I (IGF-I) increase GH treatment didn't influence TSQOL in pGH 100(51) and 12M 93(38). Only the score of perception of the satisfaction with the physical resistance increased (p=0,01) in the time pGH. In conclusion, genetic and lifelong DIGH doesn't reduce the QOL and the treatment with long-acting GH for 6 months didn't also influence it, in spite of the improvement of the perception of the satisfaction with the physical resistance, obtained with the treatment. / Redução na qualidade de vida (QV) é comumente descrita na deficiência do hormônio do crescimento (GH) com relatos de benefícios de terapia de reposição com o GH sobre a mesma. Na maioria das descrições, a deficiência do GH não é isolada, tem início na idade adulta e comporta múltiplas etiologias com seus respectivos tratamentos, os quais por si próprios podem influenciar a QV. No presente trabalho avaliamos a QV através do questionário Questions on Life Satisfaction Hypopituitarism Module (QLS-H) de 20 indivíduos adultos com deficiência isolada do GH devido a uma mutação no gene do receptor do hormônio liberador do GH (DIGH, 10 homens) comparando com 20 controles (CO, 10 homens). Adicionalmente o grupo DIGH foi avaliado após 6 meses de tratamento com GH de depósito ministrado subcutâneo a cada 15 dias (após GH) e após 12 meses da sua interrupção (12M). Não houve diferença no escore total de qualidade de vida (ETQV) entre os grupos DIGH e CO, 90(50,25) e 93 (79,25), respectivamente, mediana (distância interquartilica) e nem em alguma das nove categorias que compõem o ETQV. Resultado semelhante foi obtido quando analisado por sexo. Apesar de modesto, mas significante aumento dos níveis de vale do fator de crescimento semelhante a insulina tipo I (IGF-I), o tratamento com GH não influenciou o ETQV após GH 100(51) e 12M 93(38). Apenas o escore de percepção da satisfação com a resistência física aumentou (p=0,01) no tempo após GH. Em conclusão, DIGH genética e vitalícia não reduz a qualidade de vida e o tratamento com GH de depósito durante 6 meses também não a influenciou, apesar da melhora na percepção da satisfação com a resistência física obtida com o tratamento.
10

Morfologia e função tireoideanas na deficiência isolada de hormônio do crescimento / MORPHOLOGY AND FUNCTION THYROID IN HORMONE THE ISOLATED DEFICIENCY OF THE GROWTH

Alcântara, Marta Regina Silva de 25 July 2005 (has links)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / There are complex relationships between GH system and hypothalamic-pituitarythyroid axis. Thyroid hormones play a fundamental role in the initiation and maintenance of somatic growth and are important in the regulation of several growth factors. The relationship between goiter and acromegaly is well known, but the unique study of thyroid volume in the growth hormone deficiency has shown reduced thyroid volume in hypopituity patients. The aim of this study was to asses the morphology and thyroid function in adults patients with isolated growth homone deficiency (IGHD) due to a mutation in the receptor of growth hormone releasing hormone (GHRH) of Itabaianinha. MATERIAL AND METHODS: 3 groups were studied: Group 1 - 24 individuals with IGHD ( MT/MT; 9M/15F, 43,7±15,8anos); Group 2 18 individuals heterozygous (WT/MT; 8M/10F, 51,1±16,5anos); Group 3 18 normal homozygous (WT/WT; 7M/11F, 41,8±15anos). The subjects have done thyroid ultrassonography, avaliation of body composition, thyroid hormones (T3, T4, free T4, TSH), AAM and IGF-I. Statical analysis was made using ANOVA and spearmam correlation index. RESULTS: The group 1 (IGHD) had reduced weight, height, sds h/a, body surface, IGF-I and fat free mass with higher fat mass percent than groups 2 and 3. Group 1 (IGHD) had smaller T3 than group 3 (1,12 ± 0,23 x 1,43 ± 0,2; p < 0,05) (normal control) and higher free T4 than groups 2 (1,2 ± 0,25 x 0,94 ± 0,18; p<0,05) and 3 (1,2 ± 0,25 x 1,01 ± 0,22; p< 0,05) with tendency of higher TSH than group 3. The group 2 had smaller sds h/a (-2,44 ± 1,19 x -1,51 ± 1,2, p<0,05) and IGF-I than group 3 (138,2 ng/ml ± 122,3 x 290,2 ± 160,7; p <0,05). The thyroid volume was smaller in the group 1 (3,59 mL ± 2,09) than group 2 (5,9 mL ± 2,3; p<0,003 ) and 3 (9,24 mL ± 3,12; p<0,0001). The group 2 (heterozygous) had smaller thyroid volume than group 3 (normal homozygous) (p<0,003). When thyroid volume was corrected for body surface, the difference between thyroid volume in groups 1 (3,16 ml ± 1,69) and 2 (3,97 ml ± 1,68) dissapeared. The thyroid volume had positive correlation with IGF-I (r=677; p<0,0001), weight (r= 0,688; p<0,0001), body surface (r=0,678; p=0,000), fat free mass (r=0,717; p<0,0001) e height (r=0,748; p<0,0001) and negative correlation with free T4 (r = -0,278; p < 0,04 )and fat mass percentual (r = -0,631; p < 0,0001) when analysed the total of 46 individuals. When analysed only the IGHD individuals the positive correlation had persisted with fat free mass (r=0,432; p<0,05), height (r=0,489;p<0,02) and body surface (r=0,625; p=<0,02). CONCLUSION: The finding of smaller thyroid volume in GHD and in heterozygous subjects, and its correlation with height and serum IGF-1 indicate a critical role of GH in the determination of the volume of the thyroid gland. / Há complexas relações entre o sistema GH-IGF-I e o eixo hipotalâmico-pituitáriotireoideano. Os hormônios tireoideanos são importantes na iniciação e manutenção do crescimento somático e na regulação de vários fatores de crescimento. A relação entre bócio e acromegalia é bem conhecida, mas o único estudo de volume tireoideano na deficiência de hormônio do crescimento mostrou volume tireoideano reduzido em pacientes com hipopituitarismo. O objetivo deste estudo é avaliar a morfologia e função tireoideanas em adultos afetados com DIGH devido a mutação no receptor do GHRH de Itabaianinha e em heterozigotos para a mesma mutação. Casuística e Métodos: Foram estudados 3 grupos: Grupo 1 - 24 indivíduos com DIGH (MT/MT; 9M/15F, 43,7±15,8anos); Grupo 2 18 indivíduos heterozigotos (WT/MT; 8M/10F,51,1 ±16,5anos); Grupo 3 18 homozigotos normais (WT/WT; 7M/11F, 41,8±15anos). Os indivíduos realizaram ultrassonografia da tireóide, avaliação da composição corporal, hormônios tireoideanos (T3, T4, T4 livre), TSH, AAM e IGF-I. comparação entre os grupos foi feita através de Anova e correlações através do coeficiente de correlação de Spearman. Resultados: O grupo 1 (DIGH) apresentaram menor peso, altura, edp a/i, superfície corpórea, IGF-I e massa magra, além de maior porcentagem de massa gorda em comparação com os grupos 2 e 3. O Grupo 1 apresentou também menores níveis de T3 que o grupo 3 (1,12 ± 0,23 x 1,43 ± 0,2; p < 0,05) e maiores níveis de T4 livre que os grupos 2 (1,2 ± 0,25 x 0,94 ± 0,18; p<0,05) e 3 (1,2 ± 0,25 x 1,01 ± 0,22; p< 0,05), com tendência a maiores concentrações de TSH em relação ao grupo 3. O grupo 2 apresentou menor edp a/i (-2,44 ± 1,19 x -1,51 ± 1,2, p<0,05) e IGF-I em relação ao grupo 3 (138,2 ng/ml ± 122,3 x 290,2 ± 160,7; p <0,05). O volume tireoideano foi menor no grupo 1 (3,59 mL ± 2,09) em comparação ao grupo 2 (5,9 mL ± 2,3; p<0,003) e 3 (9,24 mL ± 3,12; p<0,0001). O gropo 2 (heterozigotos) apresentou menor volume tireoideano que o grupo 3 (homozigotos normais) (p<0,003). Quando o volume tireoideano foi corrigido por superfície corpórea, a diferença do volume tireoideano entre os homozigotos afetados (3,16 ml ± 1,69) e heterozigotos (3,97 ml ± 1,68) desapareceu. O volume tireoideano apresentou correlação positiva com o IGF-I 1 3 (r=677; p<0,0001), peso (r= 0,688; p<0,0001), superfície corpórea (r=0,678; p<0,0001), massa magra (r=0,717; p<0,0001) e altura (r=0,748; p<0,0001) e correlação negativa com percentual de massa gorda (r = -0,631; p < 0,0001) e T4 livre (r = -0,278; p < 0,04 ) quando analisados o total de 46 indivíduos. Quando analisados apenas o grupo 1, persiste as correlações positivas com massa magra (r=0,432; p<0,05), altura (r=0,489;p<0,02) e superfície corpórea (r=0,625; p=<0,02). CONCLUSÃO: O achado de menor volume tireoideano nos indivíduos com DIGH e heterozigotos e suas correlações com altura e IGF-I indicam um papel crítico do GH na determinação do volume da glândula tireoideana.

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