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1.
J Sci Food Agric ; 100(2): 755-763, 2020 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-31605375

RESUMO

BACKGROUND: ß-Hydroxy-ß-methylbutyrate (HMB) is the metabolite of leucine that plays an important role in muscle protein metabolism. The objective of the present study was to determine the effects of in ovo feeding (IOF) of HMB at 7 days of incubation (DOI) via air cell or 18 DOI via amnion on hatchability, muscle growth and performance in prenatal and posthatch broilers. RESULTS: IOF of HMB via air cell at 7 DOI increased hatchability by 4.34% compared with the control (89.67% versus 85.33%). Birds in IOF groups exhibited higher body weight, average daily body weight gain and pectoral muscle percentage. Furthermore, IOF of HMB significantly increased the level of plasma growth hormone, insulin and insulin-like growth factor-1. Chicks hatched from IOF treatment had larger diameters of muscle fiber and higher mitotic activity of satellite cells at early posthatch age. IOF of HMB activated satellite cells by upregulation of mRNA expression of myogenic transcription factors, myogenic differentiation one (MyoD) and myogenin. Chicks hatched from air cell injection group had higher pectoral muscle percentage at 5 d posthatch and greater satellite cell mitotic activity at 7 d posthatch than counterparts from amnion injection group. CONCLUSIONS: IOF of HMB via amnion at 18 DOI or especially via air cell at 7 DOI could be used as an effective approach to enhance hatchability, productive performance and breast muscle yield in broilers. © 2019 Society of Chemical Industry.


Assuntos
Galinhas/fisiologia , Músculos Peitorais/crescimento & desenvolvimento , Valeratos/metabolismo , Ração Animal/análise , Animais , Galinhas/sangue , Galinhas/genética , Galinhas/crescimento & desenvolvimento , Suplementos Nutricionais/análise , Comportamento Alimentar , Feminino , Hormônio do Crescimento/sangue , Insulina/sangue , Masculino , Mitose , Proteína MyoD/genética , Proteína MyoD/metabolismo , Mioblastos/citologia , Mioblastos/metabolismo , Miogenina/genética , Miogenina/metabolismo , Músculos Peitorais/metabolismo
2.
Heart Fail Clin ; 16(1): 11-21, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31735309

RESUMO

"Chronic heart failure (CHF) is a complex syndrome characterized by symptoms and signs supported by different forms of cardiac impairment. The link between multiple hormonal and metabolic derangements and the development of CHF and the beneficial effects seen with hormonal replacement therapy suggest that a reduction of anabolic pathways might contribute to the onset of CHF. Therefore, an imbalance between anabolic and catabolic forces could be responsible for the development of CHF. There are sufficient evidence to support the screening in patients with CHF of hormonal deficiencies and their correction with replacement therapy."


Assuntos
Hormônio do Crescimento/sangue , Insuficiência Cardíaca/metabolismo , Resistência à Insulina , Doenças Metabólicas/etiologia , Testosterona/sangue , Hormônios Tireóideos/sangue , Biomarcadores/sangue , Insuficiência Cardíaca/complicações , Insuficiência Cardíaca/tratamento farmacológico , Terapia de Reposição Hormonal/métodos , Humanos , Doenças Metabólicas/tratamento farmacológico , Doenças Metabólicas/metabolismo
3.
J Anim Sci ; 97(10): 4242-4247, 2019 Oct 03.
Artigo em Inglês | MEDLINE | ID: mdl-31581297

RESUMO

Two performance studies were conducted to investigate the effects of 3 different sources of Cu on production parameters of piglets. A total of 256 piglets weaned at 24 ± 2 d were randomly allocated into 4 treatments with 10 or 8 replicates per treatment of 4 or 3 piglets per pen in Exp. 1 and 2, respectively. The experimental period was divided into 3 feeding phases: Phase 1 (24 to 35 d), Phase 2 (36 to 49 d), and Phase 3 (50 to 70 d). Treatments included a Control group (fed 10 mg/kg of Cu from CuSO4), a group fed 160 mg/kg of either CuSO4 (CuSO4-160) or tri-basic copper chloride (TBCC), and a group fed Cu methionine hydroxy analogue chelated (Cu-MHAC) at 150, 80, and 50 mg/kg in Phases 1, 2, and 3, respectively. The methionine value of Cu-MHAC was accounted during diet formulation to achieve the same levels of methionine across treatments. Phases 1 and 2 diets contained 2,200 and 1,500 ppm of ZnO, respectively; and antibiotics were used as growth promoters. Performance parameters were analyzed as completely randomized block design, in which each experiment was considered as a block. In trial 2, blood serum and mucosal samples, from the fundic region of the stomach, were collected from 1 piglet per replicate at day 70 and tested for serum growth hormone levels (GH) and ghrelin mRNA expression, respectively. The contrast between Cu-MHAC vs. CuSO4-160 + TBCC showed that piglets fed Cu-MHAC exhibited better feed conversion ratio (FCR) in all feeding phases compared with feeding inorganic Cu (P < 0.05). Overall, feeding Cu-MHAC improved body weight (BW), BW gain, feed intake (FI), and FCR vs. Control diet fed piglets; yet, it improved BW and FCR vs. TBCC fed piglets, and improved BW, BW gain, and FI vs. CuSO4-160 fed piglets (P < 0.05). Feeding TBCC promoted similar performance than feeding CuSO4-160, regardless of age (P > 0.05). Both ghrelin expression and growth hormone serum levels were significantly increased by feeding Cu-MHAC vs. Control diet fed animals (P < 0.01). Feeding CuSO4-160 upregulated ghrelin expression vs. Control (P < 0.01) while GH serum levels and ghrelin expression did no change by feeding TBCC compared with Control diet fed animals (P > 0.05). It was concluded that feeding Cu-MHAC at the levels tested herein can improve growth performance of piglets beyond feeding 160 ppm of either CuSO4 or TBCC, which may be partially explained by the increased expression of ghrelin and GH serum levels.


Assuntos
Ração Animal/análise , Cobre/administração & dosagem , Suplementos Nutricionais/análise , Grelina/genética , Hormônio do Crescimento/sangue , Suínos/fisiologia , Animais , Peso Corporal/efeitos dos fármacos , Dieta/veterinária , Feminino , Masculino , Metionina/análogos & derivados , Metionina/química , RNA Mensageiro/genética , Distribuição Aleatória , Estômago/fisiologia , Suínos/genética , Suínos/crescimento & desenvolvimento , Desmame , Ganho de Peso/efeitos dos fármacos
4.
J Dairy Sci ; 102(11): 9983-9994, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31521359

RESUMO

The susceptibility of animals to periparturient diseases has a great effect on the economic efficiency of dairy industries, on the frequency of antibiotic treatment, and on animal welfare. The use of selection for breeding cows with reduced susceptibility to diseases offers a sustainable tool to improve dairy cattle farming. Several studies have focused on the association of distinct bovine chromosome 18 genotypes or haplotypes with performance traits. The aim of this study was to test whether selection of Holstein Friesian heifers via SNP genotyping for alternative paternal chromosome 18 haplotypes associated with favorable (Q) or unfavorable (q) somatic cell scores influences postpartum reproductive and metabolic diseases. Thirty-six heifers (18 Q and 18 q) were monitored from 3 wk before calving until necropsy on d 39 (± 4 d) after calving. Health status and rectal temperature were measured daily, and body condition score and body weight were assessed once per week. Blood samples were drawn twice weekly, and levels of insulin, nonesterified fatty acids, insulin-like growth factor-I, growth hormone, and ß-hydroxybutyrate were measured. Comparisons between the groups were performed using Fisher's exact test, chi-squared test, and the GLIMMIX procedure in SAS. Results showed that Q-heifers had reduced incidence of metritis compared with q-heifers and were less likely to develop fever. Serum concentrations of ß-hydroxybutyrate were lower and insulin-like growth factor-I plasma concentrations were higher in Q- compared with q-heifers. However, the body condition score and withers height were comparable between haplotypes, but weight loss tended to be lower in Q-heifers compared with q-heifers. No differences between the groups were detected concerning retained fetal membranes, uterine involution, or onset of cyclicity. In conclusion, selection of chromosome 18 haplotypes associated with a reduced somatic cell score resulted in a decreased incidence of postpartum reproductive and metabolic diseases in this study. The presented data add to the existing knowledge aimed at avoiding negative consequences of genetic selection strategies in dairy cattle farming. The underlying causal mechanisms modulated by haplotypes in the targeted genomic region and immune competence necessitate further investigation.


Assuntos
Bovinos/genética , Cromossomos de Mamíferos , Haplótipos , Período Pós-Parto , Reprodução , Seleção Genética , Ácido 3-Hidroxibutírico/sangue , Animais , Peso Corporal , Bovinos/metabolismo , Doenças dos Bovinos/genética , Indústria de Laticínios , Ácidos Graxos não Esterificados/sangue , Feminino , Hormônio do Crescimento/sangue , Insulina/sangue , Lactação , Placenta Retida/veterinária , Polimorfismo de Nucleotídeo Único , Gravidez
5.
J Med Case Rep ; 13(1): 298, 2019 Sep 21.
Artigo em Inglês | MEDLINE | ID: mdl-31540583

RESUMO

BACKGROUND: Focal segmental glomerulosclerosis is characterized by partial (segmental) sclerotic lesions in some glomeruli (focal). Primary focal segmental glomerulosclerosis is generally considered resistant to steroid therapy. However, acromegaly is a disease that causes peculiar facial features, body types, and metabolic abnormalities due to the excessive secretion of growth hormone by a pituitary adenoma. Growth hormone has been reported to be involved in glomerular cell growth, mesangial proliferation, and glomerulosclerosis in the kidney. CASE PRESENTATION: We report a case of a Japanese patient with focal segmental glomerulosclerosis in whom decreased urinary protein was observed after surgical treatment for acromegaly. CONCLUSION: The patient's urinary protein improved as the concentration of growth hormone/insulin-like growth factor 1 decreased.


Assuntos
Acromegalia/cirurgia , Glomerulosclerose Segmentar e Focal/terapia , Proteinúria/terapia , Acromegalia/etiologia , Adenoma/complicações , Adenoma/cirurgia , Hormônio do Crescimento/sangue , Humanos , Fator de Crescimento Insulin-Like I/análise , Masculino , Pessoa de Meia-Idade , Neoplasias Hipofisárias/complicações , Neoplasias Hipofisárias/cirurgia
6.
Arch Endocrinol Metab ; 63(4): 385-393, 2019 Jul 29.
Artigo em Inglês | MEDLINE | ID: mdl-31365626

RESUMO

INTRODUCTION: Gigantism is a rare pediatric disease characterized by increased production of growth hormone (GH) before epiphyseal closure, that manifests clinically as tall stature, musculoskeletal abnormalities, and multiple comorbidities. MATERIALS AND METHODS: Case series of 6 male patients with gigantism evaluated at the Endocrinology Service of Hospital de San José (Bogotá, Colombia) between 2010 and 2016. RESULTS: All patients had macroadenomas and their mean final height was 2.01 m. The mean age at diagnosis was 16 years, and the most common symptoms were headache (66%) and hyperhidrosis (66%). All patients had acral changes, and one had visual impairment secondary to compression of the optic chiasm. All patients underwent surgery, and 5 (83%) required additional therapy for biochemical control, including radiotherapy (n = 4, 66%), somatostatin analogues (n = 5, 83%), cabergoline (n = 3, 50%), and pegvisomant (n = 2, 33%). Three patients (50%) achieved complete biochemical control, while 2 patients showed IGF-1 normalization with pegvisomant. Two patients were genetically related and presented a mutation in the aryl hydrocarbon receptor-interacting protein (AIP) gene (pathogenic variant, c.504G>A in exon 4, p.Trp168*), fulfilling the diagnostic criteria of familial isolated pituitary adenoma. CONCLUSIONS: This is the largest case series of patients with gigantism described to date in Colombia. Transsphenoidal surgery was the first-choice procedure, but additional pharmacological therapy was usually required. Mutations in the AIP gene should be considered in familial cases of GH-producing adenomas.


Assuntos
Adenoma/terapia , Gigantismo/terapia , Neoplasias Hipofisárias/terapia , Adenoma/diagnóstico , Adolescente , Colômbia , Seguimentos , Gigantismo/diagnóstico , Hormônio do Crescimento/sangue , Adenoma Hipofisário Secretor de Hormônio do Crescimento/genética , Humanos , Fator de Crescimento Insulin-Like I/análise , Peptídeos e Proteínas de Sinalização Intracelular/genética , Masculino , Mutação/genética , Linhagem , Neoplasias Hipofisárias/diagnóstico , Estudos Retrospectivos , Distribuição por Sexo , Resultado do Tratamento , Adulto Jovem
7.
Arch Endocrinol Metab ; 63(4): 328-336, 2019 Jul 29.
Artigo em Inglês | MEDLINE | ID: mdl-31365632

RESUMO

OBJECTIVE: Investigate the therapeutic response of acromegaly patients to pegvisomant (PEGV) in a real-life, Brazilian multicenter study. SUBJECTS AND METHODS: Characteristics of acromegaly patients treated with PEGV were reviewed at diagnosis, just before and during treatment. All patients with at least two IGF-I measurements on PEGV were included. Efficacy was defined as any normal IGF-I measurement during treatment. Safety data were reviewed. Predictors of response were determined by comparing controlled versus uncontrolled patients. RESULTS: 109 patients [61 women; median age at diagnosis 34 years; 95.3% macroadenomas] from 10 Brazilian centers were studied. Previous treatment included surgery (89%), radiotherapy (34%), somatostatin receptor ligands (99%), and cabergoline (67%). Before PEGV, median levels of GH, IGF-I and IGF-I % of upper limit of normal were 4.3 µg/L, 613 ng/mL, and 209%, respectively. Pre-diabetes/diabetes was present in 48.6% and tumor remnant in 71% of patients. Initial dose was 10 mg/day in all except 4 cases, maximum dose was 30 mg/day, and median exposure time was 30.5 months. PEGV was used as monotherapy in 11% of cases. Normal IGF-I levels was obtained in 74.1% of patients. Glycemic control improved in 56.6% of patients with pre-diabetes/diabetes. Exposure time, pre-treatment GH and IGF-I levels were predictors of response. Tumor enlargement occurred in 6.5% and elevation of liver enzymes in 9.2%. PEGV was discontinued in 6 patients and 3 deaths unrelated to the drug were reported. CONCLUSIONS: In a real-life scenario, PEGV is a highly effective and safe treatment for acromegaly patients not controlled with other therapies.


Assuntos
Acromegalia/tratamento farmacológico , Cabergolina/uso terapêutico , Hormônio do Crescimento Humano/análogos & derivados , Receptores de Somatostatina/uso terapêutico , Adenoma/tratamento farmacológico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Glicemia/análise , Brasil , Cabergolina/administração & dosagem , Criança , Quimioterapia Combinada , Feminino , Hormônio do Crescimento/sangue , Hormônio do Crescimento Humano/administração & dosagem , Hormônio do Crescimento Humano/uso terapêutico , Humanos , Fator de Crescimento Insulin-Like I/análise , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Receptores de Somatostatina/administração & dosagem , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
8.
PLoS One ; 14(8): e0220853, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31408482

RESUMO

During the lactation period, rat pups are fed by the dam, and the patterns of mother-pup interaction change during this period. Additionally, there are changes in feeding; first, mother´s milk is the only food needed for sustenance, and later, it is combined with solid food and water. GH serum concentrations depend on both maternal-pup interaction and energy metabolism. In the artificial rearing (AR) procedure, pups are deprived of mother-pup interaction, and the feeding pattern is controlled. This rearing paradigm has been used in rats to analyze the effects of maternal deprivation on social behavior. In the present study, we analyzed the variation in GH, acylated ghrelin and IGF-1 serum concentrations throughout the lactation period in AR pups. At pnd7, the maternal rearing (MR) pups responded to a 4 h fast with a drop in GH serum concentration, which is a well-known response to maternal deprivation. GH serum levels in the AR pups did not change, suggesting an adaptation phenomenon. A dopamine inhibitory effect of GH secretion was observed in pnd7 cultured somatotropes, suggesting dopamine regulation of GH secretion at this age. Acylated ghrelin serum levels in the AR pups showed an inverted pattern compared to that in the MR pups, which was related to the artificial feeding pattern. IGF-1 serum levels were lower in the AR pups than in MR pups, which was associated with hepatic GH resistance and with low Igf1 mRNA expression at pnd7. Interestingly, at pnd14, both pup groups showed high hepatic Igf1 mRNA expression but low IGF-1 serum levels, and this was inverted at pnd21. However, serum glucose levels were lower in the AR pups at pnd14 but reached the same levels as the MR pups at pnd21. Moreover, hepatomegaly and higher hepatic GH-receptor levels were observed in the AR pups at pnd21, which was in agreement with an absence of a solid food meal. During AR, the pups lost the maternal interaction-stimulated GH secretion, which correlated with lower IGF-1 serum levels during the first week of postnatal development. Later, the AR pups exhibited hepatic responses, in order to satisfy the metabolic demand for the normal weaning, with low carbohydrates levels in their meal.


Assuntos
Animais Recém-Nascidos/sangue , Hormônio do Crescimento/sangue , Lactação/fisiologia , Animais , Animais Recém-Nascidos/crescimento & desenvolvimento , Animais Recém-Nascidos/fisiologia , Glicemia/análise , Feminino , Grelina/sangue , Fator de Crescimento Insulin-Like I/análise , Fígado/química , Masculino , Privação Materna , Hipófise/citologia , Hipófise/metabolismo , Ratos , Ratos Wistar/sangue , Ratos Wistar/crescimento & desenvolvimento , Ratos Wistar/fisiologia , Reação em Cadeia da Polimerase em Tempo Real , Tíbia/crescimento & desenvolvimento
9.
Zhonghua Nei Ke Za Zhi ; 58(8): 592-595, 2019 Aug 01.
Artigo em Chinês | MEDLINE | ID: mdl-31365981

RESUMO

Objective: To investigate the effects of chronic intermittent hypoxia on somatotropic axis hormone levels in rats. Methods: Mature male Wistar rats were exposed to air or intermittent hypoxia randomly.The serum levels of growth hormone-releasing hormone (GHRH), growth hormone (GH) and somatostatin (SS) were measured before exposure, at the 4th, 8th, and 12th week after exposure. Different hormone levels in two groups were compared and analyzed. Results: Compared with the control group, GHRH levels in chronic intermittent hypoxic group showed a significant decline at the 4th week [(732.77±46.99)pg/ml vs. (893.59±40.00) pg/ml, P<0.05], while SS levels at the 8th week [(30.71±2.27) pg/ml vs. (44.69±3.36) pg/ml, P<0.05] and GH levels at the 12th week [(1.20±0.29) ng/ml vs. (2.06±0.13) ng/ml, P<0.05] were similarly reduced. As the duration of intermittent hypoxia was prolonged, the GHRH levels did not decrease further [4th week (732.77±46.99) pg/ml vs. 8th week (607.54±131.61) pg/ml vs. 12th week (730.05±40.63) pg/ml, P>0.05].However, the serum SS levels decreased further from the 8th week to the 12th week [(30.71±2.27) pg/ml vs. (24.41±4.06) pg/ml, P<0.05]. Conclusion: Chronic intermittent hypoxia might inhibit the function of somatotropic axis. Hypothalamic hormones are the earlyonesto be influenced, thereafter the entire axis.


Assuntos
Hormônio Liberador de Hormônio do Crescimento/sangue , Hormônio do Crescimento/sangue , Hipotálamo , Hipóxia , Somatostatina/sangue , Animais , Masculino , Ratos , Ratos Wistar
10.
Biosensors (Basel) ; 9(3)2019 Jul 17.
Artigo em Inglês | MEDLINE | ID: mdl-31319551

RESUMO

Altered growth hormone (GH) levels represent a major global health challenge that would benefit from advances in screening methods that are rapid and low cost. Here, we present a miniaturized immunosensor using disposable screen-printed carbon electrodes (SPCEs) for the detection of GH with high sensitivity. The diazonium-based linker layer was electrochemically deposited onto SPCE surfaces, and subsequently activated using covalent agents to immobilize monoclonal anti-GH antibodies as the sensing layer. The surface modifications were monitored using contact angle measurements and X-ray photoelectron spectroscopy (XPS). The dissociation constant, Kd, of the anti-GH antibodies was also determined as 1.44 (±0.15) using surface plasmon resonance (SPR). The immunosensor was able to detect GH in the picomolar range using a 20 µL sample volume in connection with electrochemical impedance spectroscopy (EIS). The selectivity of the SPCE-based immunosensors was also challenged with whole blood and serum samples collected at various development stages of rats, demonstrating the potential applicability for detection in biological samples. Our results demonstrated that SPCEs provided the development of low-cost and single-use electrochemical immunosensors in comparison with glassy carbon electrode (GCE)-based ones.


Assuntos
Técnicas Biossensoriais , Compostos de Diazônio/química , Eletrodos , Hormônio do Crescimento/sangue , Imunoensaio , Animais , Técnicas Eletroquímicas , Ensaio de Imunoadsorção Enzimática , Imunoensaio/métodos , Ratos , Sensibilidade e Especificidade , Análise Espectral , Ressonância de Plasmônio de Superfície
11.
Fish Physiol Biochem ; 45(4): 1245-1260, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31190261

RESUMO

Anthropogenic use of water systems may cause temperature fluctuations between tributaries and large rivers for which physiological population related-effects on osmoregulatory capacity of Atlantic salmon are not well described. We simulated the downstream route in the case of the River Meuse basin to investigate the impact of a 5 °C temperature shift during smoltification on hypo-osmoregulatory capacities of smolts. Three temperature regimes were tested: control temperature-treatment (T1) without temperature shift, early (T2) or late (T3) temperature shift-treatment. Moreover, fish were subjected to seawater challenge during and after the downstream migration peak time. Two allochtonous strains were used: Loire-Allier (LA) and Cong (CG). Without temperature shift (T1), significant differences between the strains were noticed in the peak date and maximum activity of gill Na+/K+ATPase as well as in plasma sodium and potassium concentrations. For early (T2) and late (T3) temperature shift-treatments, gill Na+/K+ATPase activity, plasma osmolality and ion concentrations were negatively influenced in both strains. After salinity challenge, the highest osmolality was measured in smolts subjected to the temperature shift. Predictably circulating levels of GH and IGF-1 changed over the smolting period but they did not explain the observed modifications in hypo-osmoregulatory abilities whatever the population. The results show a negative impact of a temperature shift on hypo-osmoregulatory capacities of smolts regardless of population differences in smoltification timing under conditions without temperature shift. The resilience of such physiological impact was sustained at least for 1 week, comforting the role of high temperature in influencing the rate of changes occurring during smoltification. Therefore, favouring the downstream migration to help smolts reach the sea faster may mitigate the impact of a rapid temperature increase.


Assuntos
Migração Animal , Osmorregulação , Salmo salar/fisiologia , Temperatura Ambiente , Animais , Proteínas de Peixes/metabolismo , Brânquias/enzimologia , Hormônio do Crescimento/sangue , Fator de Crescimento Insulin-Like I/análise , ATPase Trocadora de Sódio-Potássio/metabolismo , Especificidade da Espécie
12.
Medicina (Kaunas) ; 55(6)2019 Jun 18.
Artigo em Inglês | MEDLINE | ID: mdl-31216765

RESUMO

Background and objectives: Boxing is a popular combat sport that requires high intensity and cooperation. However, there are limited data about the influence of boxing matches on blood parameters. The purpose of the present study was to investigate the match-induced changes in the metabolic, hormonal, and inflammatory status in male elite boxers. Materials and methods: High-level 20 male boxers with more than 5 years experience in boxing voluntarily participated in this study. Venous blood samples of the boxers, before and after combat, were taken for determination of the plasma parameters. Results: Our results indicated that a 9-min boxing match caused significant increases in plasma energy fuels (glucose and lactate), metabolic hormones (insulin, adrenocorticotropic hormone (ACTH), cortisol, and growth hormone), inflammatory markers (interleukin-1ß (IL-1ß), interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α)), muscle damage indicators (alanine aminotransferase (ALT) and aspartate aminotransferase (AST)), and oxidative stress marker (SOD). A decrease in total oxidant status (TOS) was also considered. However, there were no significant alterations in the plasma levels of androgenic hormone (free and total testosterone), anabolic hormone (IGF-1), lipids (total cholesterol, triglyceride, high-density lipoprotein (HDL), and low-density lipoprotein (LDL)), kidney function markers (creatinine and urea), and minerals (iron (Fe) and magnesium (Mg)). Conclusion: Elevations in the level of energy fuels and metabolic hormones of the boxers could be taken as a reflection of high-energy turnover during combat performance. The increases in inflammatory and tissue damage indicators may possibly be an indication of traumatic injury. Understanding the biochemical changes that occur during boxing match could be valuable to optimize the performance improvement of the athletes.


Assuntos
Atletas , Boxe/fisiologia , Metabolismo/fisiologia , Hormônio Adrenocorticotrópico/análise , Hormônio Adrenocorticotrópico/sangue , Adulto , Alanina Transaminase/análise , Alanina Transaminase/sangue , Aspartato Aminotransferases/análise , Aspartato Aminotransferases/sangue , Glucose/análise , Hormônio do Crescimento/análise , Hormônio do Crescimento/sangue , Humanos , Hidrocortisona/análise , Hidrocortisona/sangue , Insulina/análise , Insulina/sangue , Interleucina-1beta/análise , Interleucina-1beta/sangue , Ácido Láctico/análise , Ácido Láctico/sangue , Masculino , Estresse Oxidativo/fisiologia , Tailândia
13.
Gen Comp Endocrinol ; 281: 58-66, 2019 09 15.
Artigo em Inglês | MEDLINE | ID: mdl-31121166

RESUMO

The growth hormone (GH)/insulin-like growth factor-1 (IGF-1) system plays an important role in regulating the cellular growth and organ development. The present study investigated the seasonal expressions of growth hormone receptor (GHR), IGF-1 and insulin-like growth factor 1 receptor (IGF-1R) in the scented glands of the muskrats. Morphological changes in the scented glands of the muskrats were observed significantly between the breeding and non-breeding seasons. Immunohistochemically, the expressions of GH, GHR, IGF-1 and IGF-1R were found in glandular cells and epithelial cells of the scented glands in both seasons. The protein and mRNA expression levels of GHR, IGF-1 and IGF-1R in the scented glands during the breeding season were noticeably higher than those of the non-breeding season. In parallel, the levels of GH and IGF-1 in the sera and scented glands were remarkably higher during the breeding season. In addition, small RNA sequencing showed that the predicted targets of the significantly changed hsa-miR-5100 and mmu-miR-6937-5p might regulate the expressions of Ghr, Igf-1 or Igf-1r. These results suggested that the morphological changes in the scented glands of the muskrats during the different seasons might be related to the expression levels of GHR, IGF-1 and IGF-1R. Meanwhile, GHR/IGF-1 system might regulate the scented glandular functions via endocrine or autocrine/paracrine manners.


Assuntos
Arvicolinae/metabolismo , Regulação da Expressão Gênica , Fator de Crescimento Insulin-Like I/metabolismo , Receptor IGF Tipo 1/metabolismo , Receptores de Somatomedina/metabolismo , Receptores da Somatotropina/metabolismo , Glândulas Odoríferas/metabolismo , Estações do Ano , Animais , Arvicolinae/anatomia & histologia , Arvicolinae/sangue , Hormônio do Crescimento/sangue , Fator de Crescimento Insulin-Like I/genética , Antígeno Ki-67/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Receptores da Somatotropina/genética
14.
Biomed Res Int ; 2019: 5939372, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31073528

RESUMO

Objective: This study aimed to examine the relationship between serum alanine aminotransferase (ALT) and growth hormone (GH) in children and adolescents with short stature. Methods: In this retrospective cohort study, 670 Chinese children and adolescents with short stature were included, and 253 of them received recombinant human GH (rhGH) therapy. Anthropometric and biochemical indicators were measured. GH peak levels were assessed after provocation tests with L-dopa and insulin. The subjects were divided into 3 groups according to the GH peak level. The association between the GH peak and ALT was analyzed. The change of ALT during rhGH therapy was assessed by a generalized additive mixed model. Results: Serum ALT and incidence of ALT elevation were both decreased across the GH tertiles (P = 0.002, 0.012, respectively). A univariate analysis showed that the GH peak was negatively associated with ALT (ß: -0.12; 95%CI: -0.22, -0.02; P = 0.023). Furthermore, multiple linear stepwise regression analysis demonstrated that the GH peak was independently related to ALT after adjusting for other confounding variables (ß: -0.12; 95%CI: -0.24, -0.00; P = 0.042). Besides, mean values of the change in ALT from baseline displayed that, during the early stages of rhGH treatment, serum ALT level indicated a temporary upward trend, but it subsequently gradually decreased (ß: -0.16; 95%CI: -0.23, -0.09; P < 0.001). Conclusions: GH secretion level was strongly negatively correlated with ALT in short children and adolescents. And rhGH therapy could reduce ALT level over time.


Assuntos
Alanina Transaminase/sangue , Nanismo/sangue , Hormônio do Crescimento/sangue , Proteínas Recombinantes/administração & dosagem , Adolescente , Antropometria , Estatura , Criança , China , Nanismo/tratamento farmacológico , Nanismo/fisiopatologia , Feminino , Hormônio do Crescimento/administração & dosagem , Hormônio do Crescimento/genética , Humanos , Insulina/sangue , Levodopa/sangue , Masculino , Proteínas Recombinantes/genética
15.
Schweiz Arch Tierheilkd ; 161(5): 319-327, 2019 May.
Artigo em Alemão | MEDLINE | ID: mdl-31064738

RESUMO

INTRODUCTION: Acromegaly due to a pituitary tumor has so far only been described in 3 dogs. The present case report describes a 7-year-old male-castrated Labrador Retriever which was referred because of difficult-to-control diabetes. Physical examination revealed markedly enlarged head, tongue and paws, widened interdental spaces and thickening of the skin in the head and neck area. IGF-1 and GH were increased and the latter continued to be abnormal after somatostatin application. Computed tomography demonstrated a space-occupying lesion in the pituitary gland and the diagnosis of acromegaly due to a GH-producing tumor of the pituitary was made. The dog underwent radiation therapy with a 6MV linear accelerator (3×8Gy) and improved substantially. Two and a half years after radiation therapy the dog developed lethargy and anorexia and was euthanized. Necropsy was not permitted. This case report represents the description of a dog suffering from pituitary-dependent acromegaly which was successfully treated and had a long-term survival.


Assuntos
Doenças do Cão/diagnóstico , Doenças do Cão/terapia , Adenoma Hipofisário Secretor de Hormônio do Crescimento/veterinária , Animais , Doenças do Cão/sangue , Cães , Hormônio do Crescimento/sangue , Adenoma Hipofisário Secretor de Hormônio do Crescimento/sangue , Adenoma Hipofisário Secretor de Hormônio do Crescimento/diagnóstico , Adenoma Hipofisário Secretor de Hormônio do Crescimento/terapia , Hormônios/uso terapêutico , Fator de Crescimento Insulin-Like I/análise , Masculino , Radioterapia/veterinária , Somatostatina/uso terapêutico , Tomografia Computadorizada por Raios X , Resultado do Tratamento
16.
Fish Physiol Biochem ; 45(4): 1331-1342, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31011873

RESUMO

The aim of this work is to evaluate the effects of dietary inclusion of mixed plant protein (MP) (rapeseed meal:cottonseed meal:peanut meal = 1:1:1) on growth, body composition, blood biochemical parameters, growth hormone/insulin-like growth factor 1, and relative non-specific immune response in Yellow River carp Cyprinus carpio. Five isonitrogenous and isoenergetic trial diets were formulated to replace fish meal at 0 (MP0, control), 25% (MP25), 50% (MP50), 75% (MP75), and 100% (MP100) mixed plant protein, respectively. The 25% mixed plant protein did not affect the weight gain, specific growth rate, and protein efficiency ratio, whereas these parameters were depressed by 50% and above mixed plant protein. The whole body protein content gradually decreased with increasing dietary MP; meanwhile, the whole body lipid content is the opposite. The MP75 and MP100 diets adversely affected the glucose level, total cholesterol value, alanine transaminase, and aspartate transaminase activity of serum. Fish fed MP75 and MP100 diets showed higher growth hormone level than that of MP0 diet; however, the insulin-like growth factor 1 level got the opposite result. The 50% and above inclusion of MP decreased lysozyme activity and increased malondialdehyde content. In conclusion, no more than 50% of fish meal could be replaced by mixed plant protein in diet. However, 50% and above inclusion of mixed plant protein in diet could depress the growth, insulin-like growth factor 1 level, and non-specific immune response, and significantly affect the whole body composition and serum biochemical parameters in Yellow River carp.


Assuntos
Ração Animal , Carpas , Dieta/veterinária , Proteínas de Plantas/farmacologia , Animais , Carpas/sangue , Carpas/crescimento & desenvolvimento , Carpas/imunologia , Proteínas de Peixes/sangue , Hormônio do Crescimento/sangue , Fator de Crescimento Insulin-Like I/análise , Malondialdeído/sangue , Muramidase/sangue , Superóxido Dismutase/sangue
17.
Medicina (Kaunas) ; 55(4)2019 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-31013820

RESUMO

Background and objectives: In temperate environments, acute orally induced metabolic alkalosis alleviates exercise stress, as reflected in attenuated stress hormone responses to relatively short-duration exercise bouts. However, it is unknown whether the same phenomenon occurs during prolonged exercise in the heat. This study was undertaken with aim to test the hypothesis that ingestion of an alkalizing substance (sodium citrate; CIT) after dehydrating exercise would decrease blood levels of stress hormones during subsequent 40 km cycling time-trial (TT) in the heat. Materials and Methods: Male non-heat-acclimated athletes (n = 20) lost 4% of body mass by exercising in the heat. Then, during a 16 h recovery period prior to TT in a warm environment (32 °C), participants ate the prescribed food and ingested CIT (600 mg·kg-1) or placebo (PLC) in a double-blind, randomized, crossover manner with 7 days between the two trials. Blood aldosterone, cortisol, prolactin and growth hormone concentrations were measured before and after TT. Results: Total work performed during TT was similar in the two trials (p = 0.716). In CIT compared to PLC trial, lower levels of aldosterone occurred before (72%) and after (39%) TT (p ˂ 0.001), and acute response of aldosterone to TT was blunted (29%, p ˂ 0.001). Lower cortisol levels in CIT than in PLC trial occurred before (13%, p = 0.039) and after TT (14%, p = 0.001), but there were no between-trial differences in the acute responses of cortisol, prolactin or growth hormone to TT, or in concentrations of prolactin and growth hormone before or after TT (in all cases p > 0.05). Conclusions: Reduced aldosterone and cortisol levels after TT and blunted acute response of aldosterone to TT indicate that CIT ingestion during recovery after dehydrating exercise may alleviate stress during the next hard endurance cycling bout in the heat.


Assuntos
Aldosterona/sangue , Desidratação/dietoterapia , Suplementos Nutricionais , Hidrocortisona/sangue , Citrato de Sódio/administração & dosagem , Adulto , Desempenho Atlético/fisiologia , Estudos Cross-Over , Método Duplo-Cego , Estônia , Exercício/fisiologia , Teste de Esforço , Hormônio do Crescimento/sangue , Temperatura Alta , Humanos , Masculino , Resistência Física , Prolactina/sangue , Estatísticas não Paramétricas , Fatores de Tempo
18.
Medicine (Baltimore) ; 98(14): e14962, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30946320

RESUMO

To investigate the progression rate of bone age (BA) and associated factors during the first 3 years of growth hormone (GH) treatment in children with idiopathic GH deficiency (iGHD) and idiopathic short stature (ISS).Data for prepubertal children with iGHD and ISS who were treated with recombinant human GH were obtained from the LG Growth Study Database and analyzed. Height, weight, BA, insulin-like growth factor-1 (IGF-1) level, and GH dose were recorded every 6 months. Differences between BA and chronological age (CA), BA-CA, were calculated at each measurement. This study included 92 (78 iGHD and 14 ISS) subjects.After 3 years of GH treatment, the height z-score was -1.09 ±â€Š0.71 (P < .001 compared to baseline), BA-CA was -1.21 ±â€Š1.18 years (P < .001), and IGF-1 standard deviation score (SDS) was 0.43 ±â€Š1.21 (P < .001) in the iGHD subjects; the change in BA over the 3 years was 3.68 ±â€Š1.27 years. In the ISS subjects, the height z-score was -1.06 ±â€Š0.59 (P < .001), BA-CA was -0.98 ±â€Š1.23 years (P = .009), and IGF-1 SDS was 0.16 ±â€Š0.76 (P = .648); the change in BA over the 3 years was 3.88 ±â€Š1.36 years. The only significant factor associated with the BA progression was the BA-CA at 1 year of GH treatment (OR = 2.732, P = .001). The baseline BA-CA, IGF-1 SDS, and GH dose did not influence BA progression.Prepubertal subjects with iGHD and ISS showed height improvement and mild BA acceleration over the first 3 years of GH treatment. However, because the BA progression rate was considered to be clinically acceptable, GH treatment may increase the predicted adult height during this period.


Assuntos
Nanismo/tratamento farmacológico , Transtornos do Crescimento/tratamento farmacológico , Hormônio do Crescimento/deficiência , Hormônio do Crescimento Humano/efeitos adversos , Determinação da Idade pelo Esqueleto/métodos , Fenômenos Biológicos , Estatura/efeitos dos fármacos , Criança , Pré-Escolar , Nanismo/diagnóstico , Feminino , Transtornos do Crescimento/diagnóstico , Hormônio do Crescimento/sangue , Hormônio do Crescimento Humano/administração & dosagem , Hormônio do Crescimento Humano/uso terapêutico , Humanos , Fator de Crescimento Insulin-Like I/análise , Masculino , Estudos Prospectivos , Estudos Retrospectivos
19.
J Agric Food Chem ; 67(17): 4976-4986, 2019 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-30977367

RESUMO

This study investigated the potential link between gut microbiota and deoxynivalenol (DON)-induced feed refusal. A total of 24 barrows were randomly divided into one of three diets containing 0.61 (control diet), 1.28, or 2.89 mg DON/kg feed for 28 days. Dietary exposure to DON at 2.89 mg/kg significantly decreased the relative abundances of unclassified_f_Lachnospiraceae, Phascolarctobacterium and Ruminococcaceae_UCG-014, whereas it increased Prevotella_9 and norank_f_Prevotellaceae in the cecal digesta. Moreover, the decreased relative abundance of unclassified_f_Lachnospiraceae induced by DON exposure was positively correlated with average daily feed intake. Exposure to DON increased the serum concentrations of glucagon-like peptide-1 and peptide YY but reduced the levels of serum growth hormone and insulin-like growth factor 1. In summary, these findings suggest that chronic dietary exposure to DON induces disturbances of intestinal microbiota. Disturbed appetite-regulating hormones and somatotropic-axis-hormone secretion induced by negative microbial changes could be the potential mechanisms for DON-induced anorexia.


Assuntos
Microbioma Gastrointestinal/efeitos dos fármacos , Suínos/metabolismo , Tricotecenos/efeitos adversos , Ração Animal/análise , Animais , Ingestão de Alimentos/efeitos dos fármacos , Feminino , Contaminação de Alimentos/análise , Peptídeo 1 Semelhante ao Glucagon/sangue , Peptídeo 1 Semelhante ao Glucagon/genética , Hormônio do Crescimento/sangue , Masculino , Suínos/sangue , Suínos/microbiologia , Tricotecenos/metabolismo , Desmame
20.
Proc Natl Acad Sci U S A ; 116(15): 7449-7454, 2019 04 09.
Artigo em Inglês | MEDLINE | ID: mdl-30910968

RESUMO

When mice are subjected to 60% calorie restriction for several days, they lose nearly all of their body fat. Although the animals lack energy stores, their livers produce enough glucose to maintain blood glucose at viable levels even after a 23-hour fast. This adaptation is mediated by a marked increase in plasma growth hormone (GH), which is elicited by an increase in plasma ghrelin, a GH secretagogue. In the absence of ghrelin, calorie-restricted mice develop hypoglycemia, owing to diminished glucose production. To determine the site of GH action, in the current study we used CRISPR/Cas9 and Cre recombinase technology to produce mice that lack GH receptors selectively in liver (L-Ghr -/- mice) or in adipose tissue (Fat-Ghr-/- mice). When subjected to calorie restriction and then fasted for 23 hours, the L-Ghr -/- mice, but not the Fat-Ghr-/- mice, developed hypoglycemia. The fall in blood glucose in L-Ghr-/- mice was correlated with a profound drop in hepatic triglycerides. Hypoglycemia was prevented by injection of lactate or octanoate, two sources of energy to support gluconeogenesis. Electron microscopy revealed extensive autophagy in livers of calorie-restricted control mice but not in L-Ghr -/- mice. We conclude that GH acts through its receptor in the liver to activate autophagy, preserve triglycerides, enhance gluconeogenesis, and prevent hypoglycemia in calorie-restricted mice, a model of famine.


Assuntos
Autofagia , Glicemia/metabolismo , Restrição Calórica , Hormônio do Crescimento/sangue , Hipoglicemia/sangue , Fígado/metabolismo , Inanição/sangue , Animais , Glicemia/genética , Doença Crônica , Modelos Animais de Doenças , Hormônio do Crescimento/genética , Hipoglicemia/genética , Fígado/patologia , Camundongos , Camundongos Knockout , Inanição/genética , Inanição/patologia
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