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1.
Am J Case Rep ; 25: e943005, 2024 Apr 07.
Artículo en Inglés | MEDLINE | ID: mdl-38582958

RESUMEN

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.


Asunto(s)
Neoplasias de las Glándulas Suprarrenales , Hiperplasia Suprarrenal Congénita , Lipoma , Mielolipoma , Adulto , Femenino , Humanos , Neoplasias de las Glándulas Suprarrenales/complicaciones , Neoplasias de las Glándulas Suprarrenales/diagnóstico , Glándulas Suprarrenales , Hiperplasia Suprarrenal Congénita/complicaciones , Hiperplasia Suprarrenal Congénita/diagnóstico , Hiperplasia Suprarrenal Congénita/genética , Glucocorticoides/uso terapéutico , Mielolipoma/diagnóstico , Mielolipoma/cirugía , Mielolipoma/complicaciones , Esteroide 21-Hidroxilasa/genética
2.
Biomedicines ; 12(2)2024 Feb 19.
Artículo en Inglés | MEDLINE | ID: mdl-38398063

RESUMEN

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.
Artículo en Inglés | MEDLINE | ID: mdl-37789796

RESUMEN

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).


Asunto(s)
Ciprofloxacina , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Humanos , Anciano , Ciprofloxacina/efectos adversos , Estudios Retrospectivos , Factores de Riesgo , Susceptibilidad a Enfermedades
4.
Vnitr Lek ; 68(E-8): 23-28, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36575063

RESUMEN

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.


Asunto(s)
Hipernatremia , Hiponatremia , Humanos , Hiponatremia/complicaciones , Hiponatremia/diagnóstico , Hipernatremia/complicaciones , Hipernatremia/diagnóstico , Diagnóstico Diferencial , Enfermedad Crónica , Sodio
5.
Vnitr Lek ; 67(E-6): 8-12, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35459383

RESUMEN

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.


Asunto(s)
Enfermedad Crítica , Calidad de Vida , Cuidados Críticos , Enfermedad Crítica/psicología , Humanos , Unidades de Cuidados Intensivos , Calidad de Vida/psicología
6.
JPEN J Parenter Enteral Nutr ; 44(1): 105-118, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31032975

RESUMEN

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.


Asunto(s)
Bacterias/clasificación , Microbioma Gastrointestinal , Metaboloma , Síndrome del Intestino Corto/microbiología , Ácidos y Sales Biliares/análisis , Disbiosis , Heces/microbiología , Humanos , Nutrición Parenteral , Compuestos Orgánicos Volátiles/análisis
7.
Diabetes Metab Syndr Obes ; 12: 423-430, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30992678

RESUMEN

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.
Artículo en Inglés | MEDLINE | ID: mdl-29695708

RESUMEN

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.


Asunto(s)
Proteína 4 Similar a la Angiopoyetina/sangre , Proteínas Similares a la Angiopoyetina/sangre , Diabetes Mellitus Tipo 2/sangre , Desnutrición/sangre , Obesidad/sangre , Proteína 3 Similar a la Angiopoyetina , Cirugía Bariátrica , Procedimientos Quirúrgicos del Sistema Digestivo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Obesidad/cirugía , Síndrome del Intestino Corto/sangre , Síndrome del Intestino Corto/cirugía , Resultado del Tratamiento , Pérdida de Peso/fisiología
9.
Vnitr Lek ; 63(10): 703-706, 2017.
Artículo en Checo | MEDLINE | ID: mdl-29127753

RESUMEN

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.


Asunto(s)
Adaptación Fisiológica/fisiología , Síndrome del Intestino Corto/fisiopatología , Animales , Humanos , Intestino Delgado/cirugía
10.
Diabetes Obes Metab ; 19(12): 1818-1822, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-28581209

RESUMEN

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.


Asunto(s)
Cardiotónicos/administración & dosificación , Puente de Arteria Coronaria/efectos adversos , Corazón/efectos de los fármacos , Hiperglucemia/prevención & control , Incretinas/administración & dosificación , Complicaciones Intraoperatorias/prevención & control , Péptidos/administración & dosificación , Ponzoñas/administración & dosificación , Anciano , Cardiotónicos/efectos adversos , Cardiotónicos/uso terapéutico , República Checa/epidemiología , Quimioterapia Combinada/efectos adversos , Exenatida , Femenino , Receptor del Péptido 1 Similar al Glucagón/agonistas , Receptor del Péptido 1 Similar al Glucagón/metabolismo , Corazón/fisiopatología , Hospitales Universitarios , Humanos , Hiperglucemia/sangre , Hiperglucemia/epidemiología , Hipoglucemia/sangre , Hipoglucemia/inducido químicamente , Hipoglucemia/epidemiología , Hipoglucemia/prevención & control , Hipoglucemiantes/administración & dosificación , Hipoglucemiantes/efectos adversos , Hipoglucemiantes/uso terapéutico , Incidencia , Incretinas/efectos adversos , Incretinas/uso terapéutico , Infusiones Intravenosas , Insulina/administración & dosificación , Insulina/efectos adversos , Insulina/uso terapéutico , Complicaciones Intraoperatorias/sangre , Complicaciones Intraoperatorias/inducido químicamente , Complicaciones Intraoperatorias/epidemiología , Masculino , Péptidos/efectos adversos , Péptidos/uso terapéutico , Atención Perioperativa/efectos adversos , Complicaciones Posoperatorias/sangre , Complicaciones Posoperatorias/inducido químicamente , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/prevención & control , Prueba de Estudio Conceptual , Riesgo , Método Simple Ciego , Ponzoñas/efectos adversos , Ponzoñas/uso terapéutico , Disfunción Ventricular Izquierda/sangre , Disfunción Ventricular Izquierda/cirugía
11.
Cas Lek Cesk ; 155(3): 11-5, 2016.
Artículo en Checo | MEDLINE | ID: mdl-27256142

RESUMEN

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.


Asunto(s)
Compuestos de Bencidrilo/efectos adversos , Disruptores Endocrinos/efectos adversos , Exposición a Riesgos Ambientales/efectos adversos , Contaminantes Ambientales/efectos adversos , Trastornos del Metabolismo de la Glucosa/inducido químicamente , Fenoles/efectos adversos , Ácidos Ftálicos/efectos adversos , Diabetes Mellitus Tipo 2/inducido químicamente , Diabetes Mellitus Tipo 2/fisiopatología , Trastornos del Metabolismo de la Glucosa/fisiopatología , Humanos , Síndrome Metabólico/inducido químicamente , Síndrome Metabólico/fisiopatología , Obesidad/inducido químicamente , Obesidad/fisiopatología
12.
J Clin Endocrinol Metab ; 90(3): 1366-70, 2005 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-15598689

RESUMEN

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.


Asunto(s)
Anorexia Nerviosa/metabolismo , Bulimia/metabolismo , Hormonas Ectópicas/sangre , Péptidos y Proteínas de Señalización Intercelular/sangre , Adiponectina , Tejido Adiposo/metabolismo , Anorexia Nerviosa/clasificación , Glucemia , Índice de Masa Corporal , Femenino , Homeostasis , Humanos , Insulina/sangre , Leptina/metabolismo , Receptores de Superficie Celular/metabolismo , Receptores de Leptina , Resistina
13.
Endocr Res ; 30(3): 379-85, 2004 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-15554354

RESUMEN

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.


Asunto(s)
Leptina/sangre , Parto/sangre , Embarazo/sangre , Receptores de Superficie Celular/sangre , Femenino , Humanos , Hidrocortisona/sangre , Receptores de Leptina , Valores de Referencia , Factor de Necrosis Tumoral alfa/análisis
14.
Endocr Res ; 28(3): 189-97, 2002 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-12489568

RESUMEN

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.


Asunto(s)
Movilización de Célula Madre Hematopoyética , Leptina/sangre , Receptores de Superficie Celular/sangre , Trasplante de Células Madre , Adulto , Anciano , Índice de Masa Corporal , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/sangre , Neoplasias/patología , Neoplasias/cirugía , Receptores de Superficie Celular/química , Receptores de Leptina , Solubilidad , Trasplante Autólogo
15.
Endocr Res ; 28(3): 199-205, 2002 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-12489569

RESUMEN

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.


Asunto(s)
Anorexia Nerviosa/sangre , Receptores de Superficie Celular/sangre , Tejido Adiposo/patología , Anorexia Nerviosa/patología , Composición Corporal , Índice de Masa Corporal , Femenino , Alimentos , Humanos , Insulina/sangre , Leptina/sangre , Receptores de Superficie Celular/química , Receptores de Leptina , Valores de Referencia , Solubilidad
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