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1.
Am J Case Rep ; 25: e943005, 2024 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-38582958

RESUMO

BACKGROUND 21-hydroxylase deficiency, an essential enzyme for glucocorticoid and mineralocorticoid synthesis, is the cause of congenital adrenal hyperplasia (CAH) in more than 95% of cases. It is an autosomal recessive disorder encoded by the CYP21A2 gene, categorized into classical forms, which encompass the salt-wasting (SW) and simple virilizing (SV) forms, as well as the nonclassical form (NC). The aim of medical treatment is to replace missing glucocorticoids and, if necessary, mineralocorticoids, while also reducing elevated adrenal androgens. CASE REPORT We present the case of a 42-year-old woman with CAH who discontinued therapy during adolescence and was admitted to hospital with fatigue, nausea, and severe abdominal pain. A CT scan showed an extreme enlargement of the adrenal glands. Laboratory tests revealed elevated levels of 17-hydroxyprogesterone and other adrenal androgens, along with normal plasma metanephrine levels. Decreased morning cortisol levels suggested partial adrenal insufficiency requiring glucocorticoid replacement therapy. Due to the development of several serious complications and clinical deterioration, the multidisciplinary team recommended bilateral removal of masses measuring 300×250×200 mm on the right side and 250×200×200 mm on the left side. Histological and immunochemical examination confirmed the presence of giant myelolipomas with adrenal cortex hyperplasia. CONCLUSIONS Adrenal tumors, particularly myelolipomas, have a higher prevalence in patients with CAH. Our case report provides further evidence of the suspected link between non-compliant CAH therapy and the development of myelolipomas, along with promotion of their pronounced growth.


Assuntos
Neoplasias das Glândulas Suprarrenais , Hiperplasia Suprarrenal Congênita , Lipoma , Mielolipoma , Adulto , Feminino , Humanos , Neoplasias das Glândulas Suprarrenais/complicações , Neoplasias das Glândulas Suprarrenais/diagnóstico , Glândulas Suprarrenais , Hiperplasia Suprarrenal Congênita/complicações , Hiperplasia Suprarrenal Congênita/diagnóstico , Hiperplasia Suprarrenal Congênita/genética , Glucocorticoides/uso terapêutico , Mielolipoma/diagnóstico , Mielolipoma/cirurgia , Mielolipoma/complicações , Esteroide 21-Hidroxilase/genética
2.
Biomedicines ; 12(2)2024 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-38398063

RESUMO

BACKGROUND: COVID-19 pneumonia is associated with SIRS and hypercatabolism. The aim of this study was to determine muscle loss during the acute phase of COVID-19 pneumonia and evaluate long-term sequelae in discharged patients. METHODS: A total of 16 patients with COVID-19 pneumonia and respiratory insufficiency were included in the study. Selected parameters (weight, BMI, LBM = lean body mass, albumin, CRP, NLR = neutrophil-to-lymphocyte ratio, ultrasound measured thickness of rectus femoris muscle = US RF and rectus femoris + vastus intermedius = US RF + VI, handgrip strength, quality of life = EQ-5D questionnaire, and activities of daily living = Barthel's ADLs) were recorded on admission, discharge, and 1, 3, and 6 months after discharge. RESULTS: The most significant changes were between hospital admission and discharge: US RF and RF + VI (-1.28 ± 1.97 mm, p = 0.046; -1.76 ± 2.94 mm, p = 0.05), EQ-5D score (14.6 ± 19.2, p = 0.02), and ADLs (17.1 ± 22.6; p = 0.02). There was a significant positive correlation between US RF + VI and handgrip strength (p = 0.014) and a negative correlation between weight and Barthel index (p = 0.012). There was an association between muscle function with an EQ-5D score and ADLs during outpatient check-ups, most noticeably between handgrip strength, US RF+VI, and ADLs (p = 0.08; p = 0.1, respectively). Conclusions: In patients with COVID-19 pneumonia, there is a significant reduction of health-related quality of life, impaired even 6 months after hospital discharge, influenced mainly by muscle loss. During the hospital stay, there was a significant muscle mass reduction. Ultrasound measurement of thigh muscle thickness may be a useful method to monitor muscle loss.

3.
Bratisl Lek Listy ; 124(10): 779-782, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37789796

RESUMO

OBJECTIVES: Ciprofloxacin induces rare neuro-psychiatric adverse drug reactions (ADRs) that are, as yet, not possible to predict due to unknown predisposition factors. BACKGROUND: The aim of the analysis was to assess the frequency of neuro-psychiatric ADRs and to identify potential risk factors that predisposed patients to ciprofloxacin neurotoxicity. METHODS: This observational retrospective study involved the evaluation of the medical records of patients in the Nephrology department and 3rd Internal Clinic of the General University Hospital in Prague. RESULTS: The overall incidence of neurological ADRs was 3.6 %. No neurological ADRs developed in patients aged less than 70 years. The covariates that were significantly more prevalent in the patients who developed neuropsychiatric ADRs were as follows: higher age, a history of neuropsychiatric disorders and the use of anticonvulsants. The administration of drugs from other ATC groups, gender, weight, body mass index, body surface area, renal functions, level of C-reactive protein at the beginning of treatment and the total daily dose/kg did not differ significantly between the two groups. CONCLUSION: Ciprofloxacin neuropsychiatric ADRs are more frequent in older patients with a history of neurologic or psychiatric disorders. No other tested covariates were proven to predispose patients to neuropsychiatric ADRs during treatment with ciprofloxacin (Tab. 2, Ref. 20).


Assuntos
Ciprofloxacina , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Humanos , Idoso , Ciprofloxacina/efeitos adversos , Estudos Retrospectivos , Fatores de Risco , Suscetibilidade a Doenças
4.
Vnitr Lek ; 68(E-8): 23-28, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36575063

RESUMO

Dysnatremias are among the most common mineral imbalances encountered in clinical practice. Both hyponatremia and hypernatremia are associated with increased morbiditidy and mortality and represent negative prognostic factors regardless of their cause. Serum osmolality, extracellular fluid volume and sodium urine concentration are important parameters for evaluation the cause and differential diagnosis. The rate of onset of ionic disorder and severity of clinical symptoms are essential. While acute disorders with symptoms are treated immediately, in chronic disorders, thorough diagnostic evaluation and a careful approach to their correction are necessary. Especially with rapid substitution of chronic hyponatremia, there is a risk of osmotic demyelination syndrome. Therefore, a slow correction of the serum sodium level with frequent mineralogram checks is required.


Assuntos
Hipernatremia , Hiponatremia , Humanos , Hiponatremia/complicações , Hiponatremia/diagnóstico , Hipernatremia/complicações , Hipernatremia/diagnóstico , Diagnóstico Diferencial , Doença Crônica , Sódio
5.
Vnitr Lek ; 67(E-6): 8-12, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-35459383

RESUMO

Thanks to advances in intensive care, number of patients discharged from intensive care units is increasing. Along with that, there is also growing interest in long-term outcomes monitoring. A large proportion of patients suffers from cognitive, psychiatric and physical disabilities after discharge from intensive care unit. A set of these disabilities is called Post-intensive care syndrome (PICS). Along with patients, also their relatives could be affected, especially by mental disorders (PICS-Family, PICS-F). Long term or permanent consequences can lead to the loss of self-sufficiency, reduced quality of life, frequent rehospitalizations and numerous other health and economical consequences. A set of preventive procedures, applied during ICU hospitalization, is essential in preventing the development of PICS. In particular, prevention of extensive sedation, delirium management and early mobilization and thorough rehabilitation is needed. A much discussed topic is further outpatient monitoring of discharged patients in various post-intensive care facilities.


Assuntos
Estado Terminal , Qualidade de Vida , Cuidados Críticos , Estado Terminal/psicologia , Humanos , Unidades de Terapia Intensiva , Qualidade de Vida/psicologia
6.
JPEN J Parenter Enteral Nutr ; 44(1): 105-118, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31032975

RESUMO

BACKGROUND: The gut microbiome and metabolome may significantly influence clinical outcomes in patients with short bowel syndrome (SBS). The study aimed to describe specific metagenomic/metabolomics profiles of different SBS types and to identify possible therapeutic targets. METHODS: Fecal microbiome (FM), volatile organic compounds (VOCs), and bile acid (BA) spectrum were analyzed in parenteral nutrition (PN)-dependent SBS I, SBS II, and PN-independent (non-PN) SBS patients. RESULTS: FM in SBS I, SBS II, and non-PN SBS shared characteristic features (depletion of beneficial anaerobes, high abundance of Lactobacilaceae and Enterobacteriaceae). SBS I patients were characterized by the abundance of oxygen-tolerant microrganisms and depletion of strict anaerobes. Non-PN SBS subjects showed markers of partial FM normalization. FM dysbiosis was translated into VOC and BA profiles characteristic for each SBS cohort. A typical signature of all SBS patients comprised high saturated aldehydes and medium-chain fatty acids and reduced short-chain fatty acid (SCFA) content. Particularly, SBS I and II exhibited low protein metabolism intermediate (indole, p-cresol) content despite the hypothetical presence of relevant metabolism pathways. Distinctive non-PN SBS marker was high phenol content. SBS patients' BA fecal spectrum was enriched by chenodeoxycholic and deoxycholic acids and depleted of lithocholic acid. CONCLUSIONS: Environmental conditions in SBS gut significantly affect FM composition and metabolic activity. The common feature of diverse SBS subjects is the altered VOC/BA profile and the lack of important products of microbial metabolism. Strategies oriented on the microbiome/metabolome reconstitution and targeted delivery of key compounds may represent a promising therapeutic strategy in SBS patients.


Assuntos
Bactérias/classificação , Microbioma Gastrointestinal , Metaboloma , Síndrome do Intestino Curto/microbiologia , Ácidos e Sais Biliares/análise , Disbiose , Fezes/microbiologia , Humanos , Nutrição Parenteral , Compostos Orgânicos Voláteis/análise
7.
Diabetes Metab Syndr Obes ; 12: 423-430, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30992678

RESUMO

CONTEXT: Neudesin has recently been identified as a novel regulator of energy expenditure in experimental animals; however, its role in humans remains unexplored. OBJECTIVE: The aim of this study was to assess the effects of obesity and type 2 diabetes mellitus (T2DM) along with selected weight reducing interventions on serum neudesin levels and adipose tissue mRNA expression. PATIENTS AND METHODS: Fifteen obese subjects with T2DM undergoing endoscopic duodenal-jejunal bypass liner (DJBL) implantation, 17 obese subjects (11 with T2DM, 6 without T2DM) scheduled for gastric plication (GP), 15 subjects with functional hypoglycemia subjected to 72-hour acute fasting (AF), and 12 healthy controls were included in the study. RESULTS: Baseline neudesin levels were comparable between all groups. DJBL increased neudesin at 6 and 10 months after the procedure (1.77±0.86 vs 2.28±1.27 vs 2.13±1.02 ng/mL, P=0.001 for baseline vs 6 vs 10 months) along with reduction in body weight and improvement of HbA1c without any effect on neudesin mRNA expression in subcutaneous adipose tissue. Conversely, GP did not affect neudesin levels despite marked reduction in body weight and improvement of HbA1c. In contrast, AF decreased neudesin levels during the entire period (1.74±0.54 vs 1.46±0.48 ng/mL, P=0.001 for baseline vs 72 hours) with no impact of subsequent re-alimentation on neudesin concentrations. CONCLUSION: Neudesin levels are differentially regulated during AF and chronic weight reduction induced by DJBL or GP. Further studies are needed to assess its possible significance in energy homeostasis regulation in humans.

8.
Nutr Diabetes ; 8(1): 21, 2018 04 25.
Artigo em Inglês | MEDLINE | ID: mdl-29695708

RESUMO

BACKGROUND: Angiopoietin-like proteins (ANGPTLs) 3 and 4 are circulating factors that participate in the regulation of lipid and glucose metabolism. SUBJECTS AND METHODS: We measured serum ANGPTL3 and 4 levels in 23 patients with obesity, 40 patients with obesity and type 2 diabetes mellitus (T2DM), 22 patients with anorexia nervosa (AN), 15 subjects undergoing 72-h fasting, and 12 patients with short bowel syndrome (SBS), and their changes after very-low-calorie diet (VLCD), bariatric surgery, partial realimentation, acute fasting, and parenteral nutrition in order to assess their possible role in metabolic regulations. RESULTS: Serum ANGPTL4 levels were higher in obese subjects without/with T2DM (94.50 ± 9.51 and 134.19 ± 7.69 vs. 50.34 ± 4.22 ng/ml, p < 0.001) and lower in subjects with AN relative to healthy control subjects (38.22 ± 4.48 vs. 65.80 ± 7.98 ng/ml, p = 0.002), while serum ANGPTL3 levels demonstrated inverse tendency. Nutritional status had no effect on ANGPTL3 and 4 mRNA expression in adipose tissue. Fasting decreased ANGPTL3 and increased ANGPTL4 levels, while VLCD reduced only ANGPTL3. Bariatric surgery and realimentation of AN or SBS patients had no effect on either ANGPTL. Multiple regression analysis identified BMI as an independent predictor of ANGPTL3; and BMI and HbA1c as independent predictors of ANGPTL4, respectively. CONCLUSIONS: Taken together, our data suggest that serum ANGPTL3 and 4 levels are influenced by nutritional status and fasting and could be involved in the metabolic disturbances present in obesity and AN.


Assuntos
Proteína 4 Semelhante a Angiopoietina/sangue , Proteínas Semelhantes a Angiopoietina/sangue , Diabetes Mellitus Tipo 2/sangue , Desnutrição/sangue , Obesidade/sangue , Proteína 3 Semelhante a Angiopoietina , Cirurgia Bariátrica , Procedimentos Cirúrgicos do Sistema Digestório , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/cirurgia , Síndrome do Intestino Curto/sangue , Síndrome do Intestino Curto/cirurgia , Resultado do Tratamento , Redução de Peso/fisiologia
9.
Vnitr Lek ; 63(10): 703-706, 2017.
Artigo em Tcheco | MEDLINE | ID: mdl-29127753

RESUMO

Gut resection is followed by wide changes in the gastrointestinal tract. The goal is to increase nutrient, water and mineral absorption in the remnant intestine. These changes are going on for several months. They affect gut mucosa structure, intestine peristaltic activity and enterocytes function. The crucial role is ileum preserving. Ileum has higher adaptation ability comparing to jejunum and inhibits peristaltic function of proximal parts of GIT. A lot of factors involved in intestinal adaptation were identified, hormones, growth factors, regulating peptides, intracellular signalizing cascades, cytokines and tissue factors. The most important seems to be GLP2 (glucagon like peptide 2) which has positive trophic influence on gut mucosa. Early enteral nutrition after gut resection enhances its adaptation. Recombinant analogueGLP2 teduglutide was introduced to be used in the short bowel syndrome treatment. It inhibits stomach evacuation and hypersecretion, increases intestine perfusion and enhances intestinal adaptation. Its long-term application accelerates the parenteral nutrition weaning.Key words: enteral nutrition - enterocytes - GLP2 - gut resection - intestinal adaptation.


Assuntos
Adaptação Fisiológica/fisiologia , Síndrome do Intestino Curto/fisiopatologia , Animais , Humanos , Intestino Delgado/cirurgia
10.
Diabetes Obes Metab ; 19(12): 1818-1822, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28581209

RESUMO

We performed a randomized controlled trial with the glucagon-like peptide-1 (GLP-1) receptor agonist exenatide as add-on to standard peri-operative insulin therapy in patients undergoing elective cardiac surgery. The aims of the study were to intensify peri-operative glucose control while minimizing the risk of hypoglycaemia and to evaluate the suggested cardioprotective effects of GLP-1-based treatments. A total of 38 patients with decreased left ventricular systolic function (ejection fraction ≤50%) scheduled for elective coronary artery bypass grafting (CABG) were randomized to receive either exenatide or placebo in a continuous 72-hour intravenous (i.v.) infusion on top of standard peri-operative insulin therapy. While no significant difference in postoperative echocardiographic variables was found between the groups, participants receiving exenatide showed improved peri-operative glucose control as compared with the placebo group (average glycaemia 6.4 ± 0.5 vs 7.3 ± 0.8 mmol/L; P < .001; percentage of time in target range of 4.5-6.5 mmol/L 54.8% ± 14.5% vs 38.6% ± 14.4%; P = .001; percentage of time above target range 39.7% ± 13.9% vs 52.8% ± 15.2%; P = .009) without an increased risk of hypoglycaemia (glycaemia <3.3 mmol/L: 0.10 ± 0.32 vs 0.21 ± 0.42 episodes per participant; P = .586). Continuous administration of i.v. exenatide in patients undergoing elective CABG could provide a safe option for intensifying the peri-operative glucose management of such patients.


Assuntos
Cardiotônicos/administração & dosagem , Ponte de Artéria Coronária/efeitos adversos , Coração/efeitos dos fármacos , Hiperglicemia/prevenção & controle , Incretinas/administração & dosagem , Complicações Intraoperatórias/prevenção & controle , Peptídeos/administração & dosagem , Peçonhas/administração & dosagem , Idoso , Cardiotônicos/efeitos adversos , Cardiotônicos/uso terapêutico , República Tcheca/epidemiologia , Quimioterapia Combinada/efeitos adversos , Exenatida , Feminino , Receptor do Peptídeo Semelhante ao Glucagon 1/agonistas , Receptor do Peptídeo Semelhante ao Glucagon 1/metabolismo , Coração/fisiopatologia , Hospitais Universitários , Humanos , Hiperglicemia/sangue , Hiperglicemia/epidemiologia , Hipoglicemia/sangue , Hipoglicemia/induzido quimicamente , Hipoglicemia/epidemiologia , Hipoglicemia/prevenção & controle , Hipoglicemiantes/administração & dosagem , Hipoglicemiantes/efeitos adversos , Hipoglicemiantes/uso terapêutico , Incidência , Incretinas/efeitos adversos , Incretinas/uso terapêutico , Infusões Intravenosas , Insulina/administração & dosagem , Insulina/efeitos adversos , Insulina/uso terapêutico , Complicações Intraoperatórias/sangue , Complicações Intraoperatórias/induzido quimicamente , Complicações Intraoperatórias/epidemiologia , Masculino , Peptídeos/efeitos adversos , Peptídeos/uso terapêutico , Assistência Perioperatória/efeitos adversos , Complicações Pós-Operatórias/sangue , Complicações Pós-Operatórias/induzido quimicamente , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/prevenção & controle , Estudo de Prova de Conceito , Risco , Método Simples-Cego , Peçonhas/efeitos adversos , Peçonhas/uso terapêutico , Disfunção Ventricular Esquerda/sangue , Disfunção Ventricular Esquerda/cirurgia
11.
Cas Lek Cesk ; 155(3): 11-5, 2016.
Artigo em Tcheco | MEDLINE | ID: mdl-27256142

RESUMO

Nowadays, there is increasing evidence showing that the development of the metabolic syndrome combining obesity, type 2 diabetes mellitus, arterial hypertension and dyslipidemia involves except of traditional risk factors (overnutrition, lack of physical activity, genetic predisposition) also the effect of environmental organic substances called organic pollutants or endocrine disruptors. These chemicals can be found in plastic covers, paints, flame retardants, exhaust gases, fertilizers as well as diverse daily utensils. Phthalates, used primarily as plasticizers, and bisphenol A, are among the most wide-spread members of this group.The aim of this article is to provide a basic overview of the relationship between phthalates and bisphenol A and the etiopathogenesis of the metabolic syndrome and to highlight their potential sources. According to the analysis of materials used for parenteral nutrition and urinary excretion of phthalate metabolites and bisphenol A in subjects on long-term parenteral nutrition we suppose that currently used medical materials are safe with respect to the exposure to both phthalates and bisphenol A and that home environment, especially cosmetic products, might constitute a more probable source of these substances.


Assuntos
Compostos Benzidrílicos/efeitos adversos , Disruptores Endócrinos/efeitos adversos , Exposição Ambiental/efeitos adversos , Poluentes Ambientais/efeitos adversos , Transtornos do Metabolismo de Glucose/induzido quimicamente , Fenóis/efeitos adversos , Ácidos Ftálicos/efeitos adversos , Diabetes Mellitus Tipo 2/induzido quimicamente , Diabetes Mellitus Tipo 2/fisiopatologia , Transtornos do Metabolismo de Glucose/fisiopatologia , Humanos , Síndrome Metabólica/induzido quimicamente , Síndrome Metabólica/fisiopatologia , Obesidade/induzido quimicamente , Obesidade/fisiopatologia
12.
J Clin Endocrinol Metab ; 90(3): 1366-70, 2005 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-15598689

RESUMO

To study the role of adipose tissue-derived hormones in the pathophysiology of eating disorders, circulating levels of adiponectin, resistin, and other hormonal and metabolic parameters were measured in 16 females with the restrictive subtype of anorexia nervosa (R-AN), 10 females with the binge/purge subtype of anorexia nervosa (P-AN), 15 females with bulimia nervosa (BN), and 12 age-matched healthy females (C). Body mass index (BMI), body fat content, and serum leptin levels were severely decreased in R-AN and moderately decreased in P-AN patients, whereas the BN group did not differ from C in these parameters. Serum soluble leptin receptor levels were increased in R-AN and P-AN and unchanged in BN patients. Circulating adiponectin levels were inversely related to BMI and were unchanged in BN patients and increased by 53% in P-AN and by 96% in R-AN relative to C group, respectively. In contrast, resistin levels in malnourished R-AN and P-AN were not different from either C or BN groups and showed no significant relationship to BMI or body fat content. We suggest that increased adiponectin levels reflect decreased body fat content in AN patients. In contrast, circulating resistin levels do not appear to be closely related to the nutritional status.


Assuntos
Anorexia Nervosa/metabolismo , Bulimia/metabolismo , Hormônios Ectópicos/sangue , Peptídeos e Proteínas de Sinalização Intercelular/sangue , Adiponectina , Tecido Adiposo/metabolismo , Anorexia Nervosa/classificação , Glicemia , Índice de Massa Corporal , Feminino , Homeostase , Humanos , Insulina/sangue , Leptina/metabolismo , Receptores de Superfície Celular/metabolismo , Receptores para Leptina , Resistina
13.
Endocr Res ; 30(3): 379-85, 2004 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-15554354

RESUMO

Soluble leptin receptor is an extracellular domain of the leptin receptor that serves as the main leptin-binding protein and may play a role in the regulation of leptin tissue effects. The aim of our study was to assess serum concentrations of leptin, soluble leptin receptor, and other hormones involved in the regulation of leptin secretion in pregnant women before and after delivery. Serum leptin, cortisol, and tumor necrosis factor alpha (TNF-alpha) concentrations in 19 pregnant women before delivery were significantly higher than in healthy nonpregnant women (33.3+/-21.0 vs. 7.9+/-3.5 ng/mL, 1068.9+/-442.2 vs. 546.6+/-165.3 nmol/L, 4.4+/-1.1 vs. 3.4+/-1.2 ng/mL, respectively). In contrast, no differences between these groups were found in soluble leptin receptor levels. Delivery significantly decreased serum leptin and cortisol levels and increased soluble leptin receptor levels (12.3+/-9.1 ng/mL, 749.6+/-205.3 nmol/L, 23.3+/-7.9 U/mL, respectively). Soluble leptin receptor levels after delivery became higher than in the control group. We conclude that serum leptin and serum soluble leptin-receptor levels are significantly affected by pregnancy and delivery. The regulation of leptin levels in this group of patients appears to be distinct and independent of soluble leptin-receptor levels.


Assuntos
Leptina/sangue , Parto/sangue , Gravidez/sangue , Receptores de Superfície Celular/sangue , Feminino , Humanos , Hidrocortisona/sangue , Receptores para Leptina , Valores de Referência , Fator de Necrose Tumoral alfa/análise
14.
Endocr Res ; 28(3): 189-97, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12489568

RESUMO

BACKGROUND AND OBJECTIVES: Leptin was demonstrated to stimulate the proliferation of hematopoietic stem cells in vitro, but there is scarce information concerning serum leptin levels in patients with hematological diseases. The aim of our study was to measure serum leptin levels in patients undergoing mobilization of peripheral blood stem cells (PBSC) before autologous stem cell transplantation (ASCT). DESIGN AND METHODS: Eighteen patients indicated for ASCT were included in the study. The blood samples were obtained before the initiation of mobilization chemotherapy, at the phase of maximal leukopenia and on the second day of stem cell harvest. Serum leptin levels, soluble leptin receptor, cortisol, insulin, tumor necrosis factor alpha (TNFalpha), and interleukin-1 receptor antagonist (IL-1ra) levels were measured in the withdrawn samples. RESULTS: The basal values of parameters measured except for higher levels of IL-1ra in mobilized group did not differ significantly from those of a control group of healthy subjects. Serum leptin levels decreased significantly at the leukopenia phase and remained suppressed in the stem cell harvest phase (means +/- standard error means (SEM): 12.2 +/- 2.4 vs. 7.7 +/- 1.5 vs. 9.3 +/- 1.9 ng mL(-1)). No significant changes were found in soluble leptin receptor, insulin, cortisol, and TNFalpha levels throughout three measurements, while IL-1ra levels increased significantly in the SC harvest phase compared to the previous two measurements. INTERPRETATION AND CONCLUSIONS: As no metabolic variations explaining suppressed leptin levels were found, this suppression could be the result either of G-CSF administration or increased leptin consumption by activated stem cells.


Assuntos
Mobilização de Células-Tronco Hematopoéticas , Leptina/sangue , Receptores de Superfície Celular/sangue , Transplante de Células-Tronco , Adulto , Idoso , Índice de Massa Corporal , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/sangue , Neoplasias/patologia , Neoplasias/cirurgia , Receptores de Superfície Celular/química , Receptores para Leptina , Solubilidade , Transplante Autólogo
15.
Endocr Res ; 28(3): 199-205, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12489569

RESUMO

OBJECTIVE: To examine whether changes of serum soluble leptin receptor levels (S-LEPR) can modify leptin half-life and its tissue effects. The aim of our study was to measure S-LEPR levels in patients with anorexia nervosa (AN) before and 6 weeks after partial refeeding. METHODS: Anthropometric variables, serum leptin, S-LEPR, insulin, cortisol and TNF-alpha were measured in 15 AN patients before and after partial refeeding and 15 healthy control women. RESULTS: S-LEPR levels in AN patients were significantly higher than in healthy subjects (26.8 +/- 8.1 vs. 16.36+/-2.6U/mL, p < 0.01) and were not affected by partial refeeding (26.8 +/- 8.1 vs. 24.2 +/- 6.1 U/mL). In contrast, body mass index (BMI), body fat content, and serum leptin levels in AN patients increased significantly after partial refeeding. Except for the inverse relationship of S-LEPR levels to BMI and body fat content no clear relationship of this parameter to serum leptin, cortisol, insulin or TNF-alpha was found. CONCLUSION: S-LEPR levels are significantly increased in AN patients and this increase is unaffected by partial refeeding. The possibility of etiological role of increased S-LEPR levels in AN patients by affecting leptin central and/or peripherial effects should be further elucidated.


Assuntos
Anorexia Nervosa/sangue , Receptores de Superfície Celular/sangue , Tecido Adiposo/patologia , Anorexia Nervosa/patologia , Composição Corporal , Índice de Massa Corporal , Feminino , Alimentos , Humanos , Insulina/sangue , Leptina/sangue , Receptores de Superfície Celular/química , Receptores para Leptina , Valores de Referência , Solubilidade
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