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1.
J Endocrinol Invest ; 2024 May 02.
Artículo en Inglés | MEDLINE | ID: mdl-38696124

RESUMEN

PURPOSE: Nutritional ketosis synergistically with body-weight loss induced by a very-low-calorie ketogenic diet (VLCKD) has proven to be effective in improving obesity-related pathophysiology. Recently, growing attention has been focused on the relation between erythropoietin (EPO) and obesity. Thus, this study aims to investigate whether nutritional ketosis and weight loss induced by a VLCKD modify the circulating levels of EPO in patients with obesity in comparison with the effect of low-calorie diet (LCD) or bariatric surgery (BS). METHODS: EPO levels, iron status and body composition parameters were evaluated in 72 patients with overweight or obesity and 27 normal-weight subjects at baseline and after the three different weight-reduction therapies (VLCKD, LCD and BS) in 69 patients with excess body weight. ß-hydroxybutyrate levels were also measured in the VLCKD group. The follow-up was established at 2-3 months and 4-6 months. RESULTS: It was found that EPO levels were higher in morbid obesity and correlated with higher basal weight, fat mass (FM) and fat-free mass (FFM) in the overall sample. High baseline EPO levels were also correlated with higher impact on the course of weight loss and changes in FM and FFM induced by the three weight-loss interventions. Furthermore, the VLCKD induced a decrease in EPO levels coinciding with maximum ketosis, which was maintained over time, while statistically significant changes were not observed after LCD and BS. CONCLUSION: The obesity-related increased EPO levels are restored after VLCKD intervention at the time of maximum ketosis, suggesting a potential role of the nutritional ketosis induced by the VLCKD. Baseline EPO levels could be a biomarker of response to a weight-loss therapy.

2.
J Endocrinol Invest ; 2023 Nov 13.
Artículo en Inglés | MEDLINE | ID: mdl-37955834

RESUMEN

AIM: Growth differentiation factor 15 (GDF15) is a stress response cytokine that has been proposed as a relevant metabolic hormone. Descriptive studies have shown that plasma GDF15 levels are regulated by short term changes in nutritional status, such as fasting, or in obesity. However, few data exist regarding how GDF15 levels are regulated in peripheral tissues. The aim of the present work was to study the variations on gastric levels of GDF15 and its precursor under different physiological conditions, such as short-term changes in nutritional status or overfeeding achieved by HFD. Moreover, we also address the sex- and age-dependent alterations in GDF15 physiology. METHODS: The levels of gastric and plasma GDF15 and its precursor were measured in lean and obese mice, rats and humans by western blot, RT-PCR, ELISA, immunohistochemistry and by an in vitro organ culture system. RESULTS: Our results show a robust regulation of gastric GDF15 production by fasting in rodents. In obesity an increase in GDF15 secretion from the stomach is reflected with an increase in circulating levels of GDF15 in rats and humans. Moreover, gastric GDF15 levels increase with age in both rats and humans. Finally, gastric GDF15 levels display sexual dimorphism, which could explain the difference in circulating GFD15 levels between males and females, observed in both humans and rodents. CONCLUSIONS: Our results provide clear evidence that gastric GDF15 is a critical contributor of circulating GDF15 levels and can explain some of the metabolic effects induced by GDF15.

4.
Sci Rep ; 7(1): 16289, 2017 11 24.
Artículo en Inglés | MEDLINE | ID: mdl-29176631

RESUMEN

Irisin is a browning-stimulating molecule secreted from the fibronectin type III domain containing 5 precursor (FNDC5) by muscle tissue upon exercise stimulation. Despite its beneficial role, there is an unmet and clamorous need to discern many essential aspects of this protein and its mechanism of action not only as a myokine but also as an adipokine. Here we contribute to address this topic by revealing the nature and role of FNDC5/irisin in adipose tissue. First, we show that FNDC5/irisin expression and secretion are induced by adipocyte differentiation and confirm its over-secretion by human obese visceral (VAT) and subcutaneous (SAT) adipose tissues. Second, we show how secreted factors from human obese VAT and SAT decrease PGC1α, FNDC5 and UCP1 gene expression on differentiating adipocytes; this effect over UCP1 is blunted by blocking irisin in obese secretomes. Finally, by stable gene silencing FNDC5 we reveal that FNDC5-KO adipocytes show reduced UCP1 expression and enhanced adipogenesis.


Asunto(s)
Adipocitos/metabolismo , Adipogénesis/fisiología , Fibronectinas/metabolismo , Termogénesis/fisiología , Proteína Desacopladora 1/metabolismo , Adipogénesis/genética , Animales , Fibronectinas/genética , Silenciador del Gen/fisiología , Humanos , Grasa Intraabdominal/metabolismo , Ratones , Obesidad/genética , Obesidad/metabolismo , Coactivador 1-alfa del Receptor Activado por Proliferadores de Peroxisomas gamma/metabolismo , Grasa Subcutánea/metabolismo , Termogénesis/genética , Proteína Desacopladora 1/genética
6.
Int J Obes (Lond) ; 41(10): 1570-1578, 2017 10.
Artículo en Inglés | MEDLINE | ID: mdl-28588304

RESUMEN

BACKGROUND: Fibroblast growth factor 21 (FGF21) has been suggested to be an endocrine signal of nutritional status and an active regulator of metabolism. However, there is no agreement on the effect of weight-loss therapies on circulating levels of FGF21 in humans. OBJECTIVE: To assess FGF21 circulating levels in adiposity excess and after different weight-loss strategies prescribed in five different groups from four independent centers. SUBJECTS AND METHODS: Body composition, ketosis, insulin sensitivity and FGF21 were evaluated in 181 excess body weight and 14 normal-weight subjects. From the excess body weight patients, two independent groups (discovery cohort; n=20 and validation cohort; n=28) undertook a very low-calorie ketogenic (VLCK) diet, a third group followed a low-calorie (LC) diet (n=84) and other two groups underwent bariatric surgery (discovery cohort; n=24 and validation cohort; n=25). The follow-up was 4 to 6 or 12 months, respectively. RESULTS: FGF21 levels were higher in excess body weight patients than in normal-weight subjects. The energy-restriction therapy to lose weight induced a significant decrease, with respect to baseline, in circulating levels of FGF21 (VLCK: -62.5 pg ml-1 or -14.8 pg ml-1 and LC diet: -67.9 pg ml-1). There were no differences in FGF21 levels between both energy-restriction treatments. On the contrary, after bariatric surgery morbidly obese patients showed a significant increase in FGF21, especially 1 month after surgery (148.8 pg ml-1 higher than baseline). The FGF21 differential changes occur concomitantly with a non-induced ketosis situation (0.66±0.56 mm) in bariatric surgery, and an improvement in adiposity and insulin sensitivity induced by the three therapies. CONCLUSIONS: FGF21 levels were reduced after energy-restricted treatments and severely increased after bariatric surgery, independently of the weight reduction magnitude, insulin sensitivity or ketosis. Therefore, FGF21 appears to be a marker of severe nutritional stress.


Asunto(s)
Cirugía Bariátrica , Restricción Calórica , Factores de Crecimiento de Fibroblastos/sangre , Obesidad Mórbida/sangre , Obesidad Mórbida/terapia , Estrés Fisiológico , Adulto , Biomarcadores/sangre , Composición Corporal , Femenino , Estudios de Seguimiento , Humanos , Resistencia a la Insulina , Cetosis , Masculino , Estado Nutricional/fisiología , Obesidad Mórbida/complicaciones , Obesidad Mórbida/cirugía , España , Pérdida de Peso
7.
Int J Obes (Lond) ; 40(3): 514-23, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26443342

RESUMEN

BACKGROUND/OBJECTIVES: Obese adipose tissue, especially the visceral depot, exhibits altered production of several molecules that could have a role on the initiation/promotion of breast cancer development. The aim of this work was to evaluate the effect of excess adipose tissue and its secreted factors on the expression of genes involved in the early steps of tumor promotion on the mammary gland. SUBJECTS AND METHODS: Carcinogenesis-related gene expression was evaluated in mammary gland tissue from female diet-induced obese (DIO) Sprague-Dawley rats and circulating leukocytes isolated from a group of breast cancer diagnosed and non-diagnosed obese women and compared with their normal weight counterparts. In addition, the human non-tumoral mammary epithelial cell line MCF10A was treated in vitro with the visceral (retroperitoneal adipose tissue (RPAT)) or subcutaneous adipose tissue (SAT) secretome and with rising concentrations of the lipid peroxidation by-product 4-hydroxynonenal (4-HNE). RESULTS: DIO rats were classified as susceptible to DIO (DIO-S) or partially resistant to DIO (DIO-R) according to the maximum fat mass gain of the lean group as a cut-off. As compared with lean and DIO-R, the DIO-S group showed a higher fat mass and lower lean mass. The anatomical characteristic of DIO-S was correlated with differential expression of cellular proliferation (ALDH3A1 and MYC) and antioxidant and DNA protection (GSTM2, SIRT1), and tumor suppression (TP53, PTEN, TGFB1) genes. Remarkably, this carcinogenesis-related gene expression pattern was reproduced in MCF10A treated with the RPAT secretome from DIO-S rats and with the lipid peroxidation by-product 4-HNE. Moreover, this pattern was also detected in leukocytes from obese women compared with normal weight women without evidence of breast cancer. CONCLUSIONS: Lipid peroxides secreted by the obese visceral adipose tissue could be among the relevant factors that promote changes involved in the early steps of tumor development in mammary gland. These changes can be detected even before histological alterations and in circulating leukocytes.


Asunto(s)
Neoplasias de la Mama/patología , Transformación Celular Neoplásica/patología , Proteínas de Neoplasias/metabolismo , Obesidad/patología , Grasa Subcutánea/patología , Animales , Apoptosis , Western Blotting , Proliferación Celular , Femenino , Regulación Neoplásica de la Expresión Génica , Predisposición Genética a la Enfermedad , Estrés Oxidativo , Ratas , Ratas Sprague-Dawley
8.
Aliment Pharmacol Ther ; 38(9): 995-1001, 2013 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24099466

RESUMEN

BACKGROUND: Despite initial evidence in the literature, nonsteroidal anti-inflammatory drugs (NSAIDs) have not been widely used to prevent post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). AIM: To complete a meta-analysis of high-quality RCTs that included the latest available literature published after past meta-analytical efforts METHODS: A comprehensive electronic literature search was carried out for RCTs comparing peri-procedural rectal indomethacin and placebo in preventing PEP. Methodological quality was assessed by the Cochrane risk of bias tool. Fixed model Mantel-Haenszel meta-analysis, Q test and I(2) index were used. Several subgroup and sensitivity analyses were planned. RESULTS: A total of four of 61 retrieved trials between 2007 and 2012 (n = 1470) were included. No significant publication bias existed. All studies used similar criteria to detect pancreatitis. The pooled proportion estimate of the rate of pancreatitis was 5.1% with indomethacin and 10.3% with placebo. After excluding the high-risk patients, the rates were 3.9% and 7.9% respectively. Fixed model meta-analysis showed that the rate of pancreatitis was significantly lower using indomethacin as compared with placebo [OR = 0.49(0.34-0.71); P = 0.0002]. Number needed to treat was 20. There was no significant statistical or clinical heterogeneity. In subgroup analysis, the difference remained unchanged for average-risk population [OR = 0.49(0.28-0.85); P = 0.01] or in preventing severe PEP [OR = 0.41(0.21-0.78); P = 0.007]. The result of the main outcome remained robust in multiple sensitivity analyses. CONCLUSIONS: Rectal indomethacin used immediately before or after ERCP significantly reduces the risk of PEP to half in both low- and high-risk patients, and with both statistically and clinically significant conclusions. These results suggest that a possible change in routine practice for patients at both low and high risk of developing PEP should be advocated.


Asunto(s)
Colangiopancreatografia Retrógrada Endoscópica/efectos adversos , Indometacina/uso terapéutico , Pancreatitis/prevención & control , Administración Rectal , Antiinflamatorios no Esteroideos/administración & dosificación , Antiinflamatorios no Esteroideos/uso terapéutico , Humanos , Indometacina/administración & dosificación , Pancreatitis/etiología , Riesgo
10.
Am J Nephrol ; 37(6): 509-17, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23689615

RESUMEN

BACKGROUND: Mycophenolate (MF) is effective as a maintenance therapy after induction therapy in patients with lupus nephritis (LN). However, little is known about its role in patients with impaired renal function. The purpose of this study was to evaluate the efficacy and safety of MF as a maintenance therapy for LN and its association with renal function. METHODS: Data were obtained for 56 Spanish patients who were receiving MF as a maintenance therapy for LN. Patients were classified into two groups according to renal function at the initiation of MF treatment: group 1 [estimated glomerular filtration rate (eGFR) ≥60 ml/min/1.73 m(2)] and group 2 (eGFR <60 ml/min/1.73 m(2)). The primary endpoints of the study were the rates of renal relapse and responses, and their relationship with baseline renal function. Secondary outcomes were the appearance of side effects during treatment. RESULTS: At initiation of MF treatment, the only differences between the groups were for age, hemoglobin levels, anti-DNA antibody titer, proteinuria, and renal function. In group 1 (n = 38), the eGFR was 98 ± 34 ml/min/1.73 m(2) and in group 2 (n = 18) the eGFR was 43 ± 14 ml/min/1.73 m(2). Only 3 cases had an eGFR <30 ml/min/1.73 m(2). No significant differences were observed in the rate of relapse at 6 months (group 1: 20%; group 2: 23%) or at 12 months (group 1: 25%; group 2: 17%). Response rates were also similar in both groups. Side effects were unremarkable. CONCLUSIONS: MF is effective and safe as a maintenance therapy for LN both in patients with normal renal function and in those with renal impairment.


Asunto(s)
Inmunosupresores/uso terapéutico , Nefritis Lúpica/tratamiento farmacológico , Ácido Micofenólico/análogos & derivados , Insuficiencia Renal Crónica/complicaciones , Adolescente , Adulto , Anciano , Femenino , Tasa de Filtración Glomerular , Humanos , Nefritis Lúpica/complicaciones , Quimioterapia de Mantención , Masculino , Persona de Mediana Edad , Ácido Micofenólico/uso terapéutico , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Resultado del Tratamiento , Adulto Joven
11.
Am J Nephrol ; 35(5): 424-33, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22517244

RESUMEN

BACKGROUND: Mycophenolate (MF) is effective as induction therapy for lupus nephritis (LN) in patients with normal renal function; however, little is known about its role in patients with impaired renal failure. The purpose of this study was to evaluate the response to MF in LN and its association with baseline renal function. METHODS: Data were obtained for 90 patients from 12 Spanish renal units who were receiving MF as induction therapy for LN. Patients were classified into 2 groups: group 1 (estimated glomerular filtration rate [eGFR] ≥60 ml/min/1.73 m(2)) and group 2 (eGFR <60 ml/min/ 1.73 m(2)). The primary outcome measure was the percentage of patients who achieved any response and its relationship with initial eGFR. The secondary outcome measures were the percentage of patients who achieved a complete response (CR) or partial response (PR) and the appearance of relapses during treatment and side effects. RESULTS: At initiation of MF treatment, there were no differences in the main parameters between group 1 (n = 63; eGFR 87 ± 23 ml/min/ 1.73 m(2)) and group 2 (n = 27; eGFR 44 ± 12 ml/min/1.73 m(2)). Exposure to prednisone and MF was similar. The percentages of patients who achieved a response in groups 1 and 2 were, respectively, 69.2 and 43.8% at 6 months and 81.3 and 73.7% at 12 months. CR was more frequent in group 1, whereas PR was similar in both groups. Four patients relapsed and side effects were unremarkable. CONCLUSIONS: MF is effective and safe as induction therapy for LN, and response is even achieved in patients with baseline renal impairment.


Asunto(s)
Antibióticos Antineoplásicos/uso terapéutico , Inmunosupresores/uso terapéutico , Nefritis Lúpica/tratamiento farmacológico , Ácido Micofenólico/uso terapéutico , Prednisona/uso terapéutico , Insuficiencia Renal/tratamiento farmacológico , Adulto , Antibióticos Antineoplásicos/administración & dosificación , Antibióticos Antineoplásicos/efectos adversos , Femenino , Tasa de Filtración Glomerular , Humanos , Inmunosupresores/administración & dosificación , Inmunosupresores/efectos adversos , Estimación de Kaplan-Meier , Nefritis Lúpica/complicaciones , Masculino , Ácido Micofenólico/administración & dosificación , Ácido Micofenólico/efectos adversos , Inducción de Remisión , Insuficiencia Renal/etiología , Estudios Retrospectivos , España , Resultado del Tratamiento , Adulto Joven
12.
Hernia ; 15(1): 85-91, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20084419

RESUMEN

BACKGROUND: Parastomal hernia is a frequent complication after performing an ostomy, and although different technical options have been described, it lacks an ideal intervention to resolve it. The use of meshes and the laparoscopic approach, has led to a significant advance in resolving this condition. However, the ideal technique should guarantee must ensure integral repair of the abdominal wall, taking into account the functionality of the stoma. In large parastomal eventrations the repairing of the ventral hernia with a mesh and relocating the stoma in another quadrant may be an intervention that fulfills both principles, and open approach being described. METHODS: We review the current state of surgical management of this condition and analyze the different technical options. Present the first description for using a laparoscopic technique with meshplasty and stoma relocation in an obese patient with a complex parastomal hernia, with results in the 18 month follow up. CONCLUSIONS: Surgical technique repair of the parastomal hernia is sometimes a complex issue, which possibly requires different solutions according to the characteristics of the hernia and patient. The technique described of meshplasty with stoma relocation by laparoscopic approach has been revealed as an affordable technique, with minor inconvenience to the patient, absence of complications and good functional results in the long term, benefiting from the advantages of minimally invasive surgery itself.


Asunto(s)
Colostomía/efectos adversos , Hernia Ventral/etiología , Hernia Ventral/cirugía , Laparoscopía/métodos , Mallas Quirúrgicas , Anciano , Colostomía/rehabilitación , Femenino , Humanos
13.
Am J Transplant ; 9(2): 251-7, 2009 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19178412

RESUMEN

NKG2D is one of the best characterized activating receptors on Natural Killer (NK) and CD8+ T cells. This receptor recognizes several different ligands (MICA/MICB and ULBPs) induced by cellular stress and infection. In addition to the role described in cancer surveillance, recent data highlight the importance of NKG2D and its ligands in organ transplantation. Allografts show evidence of MICA and MICB expression in both acute and chronic rejection. The presence of anti-MICA antibodies has been correlated with incidence of graft rejection. Furthermore, NKG2D-ligand engagement activates NK cells, which provides T-cell costimulation, and enhances antigen specific CTL-mediated cytotoxicity. Activated NK cells may function as a bridge between innate and adaptive immunity associated with transplantation. Activated NK cells in response to IL-15 can also trigger organ rejection through NKG2D and affect the maturation of both donor and recipient antigen presenting cells (APCs) and ultimately the T-cell allogeneic response. Regulatory T cells, which modulate T-cell responses in organ transplantation and infections, were reduced in numbers by NK cells exposed to intracellular pathogens, possibly via interaction with one NK2GD receptor. Blockage of NKG2D-NKG2D-L interactions provides a novel pathway for development of inhibitors. These studies have important clinical and therapeutic implications in solid organ transplantation.


Asunto(s)
Subfamilia K de Receptores Similares a Lectina de Células NK/fisiología , Trasplante de Órganos , Rechazo de Injerto/inmunología , Humanos , Ligandos , Receptores Inmunológicos/antagonistas & inhibidores
15.
Transplant Proc ; 39(10): 3460-2, 2007 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-18089407

RESUMEN

Before the highly active antiretroviral therapy (HAART) era, kidney transplantation was not considered an option for patients infected with human immunodeficiency virus (HIV) because of its poor outcome. However, recent studies have demonstrated results comparable to those of recipients without HIV infections. They have shown that HIV-positive patients maintained on HAART mount an immune response. Immunosuppressive agents are chosen to minimize aggravation of HIV infection, bearing in mind the potential side effects of the combination of HAART and immunosuppressive drugs. Herein we have reported the case of a 43-year-old HIV- and hepatitis C virus-infected woman with preserved immune function who received a cadaveric kidney transplant and developed an acute humoral rejection, which was successfully treated with Rituximab.


Asunto(s)
Anticuerpos Monoclonales/uso terapéutico , Rechazo de Injerto/terapia , Infecciones por VIH/complicaciones , Factores Inmunológicos/uso terapéutico , Trasplante de Riñón/patología , Plasmaféresis , Adulto , Anticuerpos Monoclonales de Origen Murino , Terapia Combinada , Creatinina/sangre , Rechazo de Injerto/tratamiento farmacológico , Humanos , Masculino , Rituximab , Resultado del Tratamiento
16.
Transplant Proc ; 39(7): 2245-7, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17889152

RESUMEN

BACKGROUND: Patients with chronic allograft nephropathy (CAN) very frequently suffer anemia. Correction of anemia by means of recombinant erythropoietin (rEpo) is possible and useful, but safety and efficacy must be assessed. METHODS: This multicenter, prospective, open study included patients with a cadaver renal transplant, CAN, and non-ferropenic anemia. The aim of the study was to determine the safety and efficacy of treatment with rEpo to target hematocrit (HCT) values around 35% and/or hemoglobin (Hb) levels of 11 g/dL. RESULTS: Twenty-four patients were included: 71% males and 29% females aged 49.5 +/- 14 years. At last follow-up, 48% did not show anemia-related symptoms, and 19% experienced adverse events possibly or probably related to rEpo. In 86% of cases, anemia was corrected and in 71%, graft survival was conserved. Patients whose anemia was not corrected had poor initial renal function (sCr 5 +/- 1 mg/dL vs sCr 3.2 +/- 1 mg/dL, P = .028). Patients with graft survival showed correction of anemia (P = .001) on a relatively low dose of rEpo and without a significant increase in blood pressure. CONCLUSIONS: All patients who had graft survival and only half of those who lost their graft showed a correction of anemia. The rEpo treatment neither accelerated nor decelerated renal failure. The difference between patients in whom anemia was corrected, or not, did not depend upon the previous level of HCT/Hb, but upon worse renal function. Thus, rEpo in patients with CAN is safe and effective, so administration should be initiated early to avoid adverse events deriving from anemia.


Asunto(s)
Eritropoyetina/uso terapéutico , Trasplante de Riñón/patología , Adulto , Anemia/tratamiento farmacológico , Anemia/etiología , Presión Sanguínea , Cadáver , Enfermedad Crónica , Creatinina/sangre , Eritropoyetina/normas , Femenino , Tasa de Filtración Glomerular , Humanos , Trasplante de Riñón/efectos adversos , Trasplante de Riñón/fisiología , Masculino , Persona de Mediana Edad , Seguridad , Donantes de Tejidos , Trasplante Homólogo/patología
17.
Nefrologia ; 26(1): 113-20, 2006.
Artículo en Español | MEDLINE | ID: mdl-16649432

RESUMEN

HIV infection has experienced dramatic improvement in morbidity and mortality with the highly active antiretroviral therapy (HAART). This prompted a reevaluation of organ-solid transplantation as a treatment option for HIV-infected patients. Some trials in the United States have shown that one- and 2-year graft and patient survival is comparable to HIV-negative transplant population. In Europe the experience is still scarce. The aim of this study is to analyse the outcome and the clinical characteristics of HIV-infected patients who received kidney transplantation in Spain in the HAART era. Ten patients were transplanted in our country since 2001. Only one patient was black. The main cause of end-stage renal disease reported was glomerulonephritis. Six of the recipients were coinfected by hepatitis C virus. Inclusion criteria included undetectable HIV viral load and CD4 counts greater than 200/pL. Immunosuppression consisted of steroids, tacrolimus and mycophenolate mofetil, with antibody induction in 4 cases. The median and mean follow-up was 11 and 16.3+/-15.6 (3-46) months, respectively. One recipient lost his graft because of early renal venous thrombosis. The remaining patients are functioning graft with mean serum creatinina level of 1.5 +/- 0.5 mg/dl. Biopsy-proven acute rejection was diagnosed in 4 recipients and was reversed in all cases with antirejection treatment. The plasma HIV RNA levels have remained controlled and CD4 counts have been stable in excess of 200 cell/microL. None of patients have developed AIDS complications. Recipients receiving protease inhibitor-based HAART regimens required significant dosing modification to maintain appropriate tacrolimus levels. Our results show that renal transplantation can be a safe and effective treatment in select HIV-infected patients. Like other series, the acute rejection rate was higher than in non-HIV recipients. The reasons of this rejection incidence remain unknown.


Asunto(s)
Infecciones por VIH/complicaciones , Fallo Renal Crónico/cirugía , Trasplante de Riñón/estadística & datos numéricos , Adulto , Fármacos Anti-VIH/uso terapéutico , Terapia Antirretroviral Altamente Activa , Recuento de Linfocito CD4 , Interacciones Farmacológicas , Femenino , Estudios de Seguimiento , Rechazo de Injerto , Infecciones por VIH/tratamiento farmacológico , Inhibidores de la Proteasa del VIH/farmacología , Inhibidores de la Proteasa del VIH/uso terapéutico , Humanos , Fallo Renal Crónico/complicaciones , Esperanza de Vida , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , ARN Viral/sangre , España , Análisis de Supervivencia , Tacrolimus/administración & dosificación , Tacrolimus/farmacología , Tacrolimus/uso terapéutico , Resultado del Tratamiento , Carga Viral
18.
Transplant Proc ; 37(9): 3760-3, 2005 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16386530

RESUMEN

Cytomegalovirus (CMV) infection alone or in combination with other pathogens ("pathogen burden") has been postulated as a factor producing arteriosclerosis in some solid organ transplant recipients. The aim of this study was to assess whether the patients with CMV replication and/or "herpesvirus burden" experienced a greater incidence of cardiovascular events during the first year after kidney transplantation. One hundred twenty-one consecutive transplant recipients were prospectively studied for CMV replication using antigenemia and polymerase chain reaction (PCR) weekly during the 4 first months, and monthly thereafter for 1 year. Simultaneously, nested-PCR for human herpes virus (HHV)-6 and HHV-7 were performed to yield a herpesvirus burden (as determined by seropositivity), including CMV, herpes simplex virus (HSV), varicella-zoster virus (VZV), and Epstein-Barr virus (EBV). The following additional parameters were analyzed: gender, age, smoking, duration of dialysis, preexistent diabetes, and preexistent cardiovascular events. After 1 year posttransplantation cardiovascular events, body mass index, arterial hypertension, number of antihypertensive drugs, use of ACE and/or ARBs inhibitors, diabetes, anemia, homocysteine, creatinine, cholesterol, HDLc, LDLc, PTH-i, proteinuria, and immunosuppression with cyclosporine or tacrolimus. CMV replication was present in 79 (65.3%) patients. Among 121 renal transplant recipients, 13 presented cardiovascular events, all associated with CMV replication (P = .004). Neither HHV-6 or HHV-7 replication influenced this complication. All patients with these events were seropositive for CMV, HSV, VZV, and EBV, as opposed to 64.8% without them (P = .009). Other factors that showed differences between patients with versus without events were as follows: preexistent events (76.9% vs 14.8%; P = .000), age (60 +/- 10 vs 49 +/- 14; P = .002), serum triglyceride value (191 +/- 82 vs 135 +/- 72; P = .02), and anemia (23.1% vs 5.6%; P = .05). Multiple logistic regression analysis for statistically significant variables only showed that preexistent events influenced the development of posttransplantation events (odds ratio, 27; 95% confidence interval, 4.7-154; P = .0005). In conclusion, cardiovascular events within 1 year after transplantation were more frequent among patients with CMV replication and seropositivity for other herpesviruses. An important risk factor was the presence of preexistent events.


Asunto(s)
Infecciones por Citomegalovirus/epidemiología , Citomegalovirus/fisiología , Herpes Simple/epidemiología , Herpesviridae/fisiología , Trasplante de Riñón/efectos adversos , Complicaciones Posoperatorias/virología , Replicación Viral , Adolescente , Adulto , Anciano , Femenino , Homocisteína/sangre , Humanos , Inmunosupresores/uso terapéutico , Trasplante de Riñón/inmunología , Masculino , Persona de Mediana Edad , Factores de Riesgo , Factores de Tiempo
19.
Transplant Proc ; 37(9): 3778-81, 2005 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16386536

RESUMEN

The aim of the present study was to assess the role of cardiovascular risk factors in the occurrence of cardiovascular events among 100 consecutive renal transplant recipients during the first 2 years after transplantation. The following parameters were analyzed: (1) demographic data (gender, age, dialysis duration, preexistent diabetes, and pretransplantation events) as well as (2) basal 1-year, and 2-year posttransplantation data for events, body mass index, arterial hypertension, number of drugs for hypertension control, use of ACE or ARA II inhibitors, treatment with lipid- lowering drugs, de novo diabetes, anemia, immunosuppression with cyclosporine versus tacrolimus, and homocysteine, folic acid, serum creatinine, uric acid, PTH-i, and cholesterol total, high-density lipoprotein (HDL)-cholesterol, low-density lipoprotein (LDL)-cholesterol, and triglyceride levels. At the end of the second posttransplantation year, 14 patients versus 86 who did not experience a new cardiovascular event. Patients in the event group had more events pretransplantation and during the first posttransplantation year than those in the non event group (57.1% vs 17.4%; P = .003 and 78.6% vs 2.3%; P = .000, respectively). Furthermore, the former cohort of patients were older, had greater ventricular hypertrophy and had higher triglyceride and serum creatinine concentrations during the 2 years after transplantation. A multiple logistic regression analysis confirmed the relationship between events within 1 year of transplantation and serum creatinine level at the end of 2 years as well as the development of cardiovascular disease within 2 years. In conclusion, our data suggest the need for aggressive intervention during the first year to prevent the development of new cardiovascular events. Renoprotective strategies may also contribute to reduce the cardiovascular risk of renal transplant recipients.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Trasplante de Riñón/efectos adversos , Complicaciones Posoperatorias/epidemiología , Diabetes Mellitus/epidemiología , Femenino , Estudios de Seguimiento , Humanos , Terapia de Inmunosupresión/efectos adversos , Terapia de Inmunosupresión/métodos , Trasplante de Riñón/inmunología , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo
20.
Transplant Proc ; 37(9): 3817-8, 2005 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16386548

RESUMEN

BACKGROUND: Prevalence of diabetes mellitus (DM) type 2 in Asturias is 10%. The associations between age, family history of diabetes, hypertension, obesity, hypertriglyceridemia, and development of type 2 diabetes are well established. The aim of this study was to evaluate the prevalence of and risk factors for posttransplantation diabetes mellitus (PTDM). METHODS: We retrospectively studied 500 patients who had received a cadaveric renal transplant. Subjects with pretransplantation diabetes (5.6% type 1 and 7% type 2) and nondiabetics (78.2%) were excluded. We only evaluated 46 (9.2%) patients with PTDM. The follow-up period was 6 months to 15 years. We reviewed gender, age, family history of diabetes, body weight, hypertension, cardiovascular events, serum creatinine, hepatitis C virus infection, triglycerides, hyperuricemia, high-density lipoprotein and low-density lipoprotein cholesterol, and immunosuppressive therapies. RESULTS: The median time to diagnosis of PTDM was 3 months (range 1-56 months) after transplantation, a period in which 47% patients developed this complication. Compared with nondiabetics, PTDM patients were significantly older (P = .000), more obese (P = .002), received tacrolimus (P = .027), and had hypertension (P = .014) or cardiovascular events (P = .000). Serum creatinine and hepatitis C virus infection rated were similar in both groups. On multivariate analyses, the risk factors significantly associated with the development of PTDM were greater age (P = .0024), obesity (P = .0032), and hypertension (P = .0516). CONCLUSIONS: Half of the patients with PTDM developed new-onset diabetes within the first 3 months. Age, obesity, and hypertension were among the risk factors for diabetes posttransplantation. After the transplantation, the modifiable risk factors are control of body weight and control of hypertension.


Asunto(s)
Diabetes Mellitus/epidemiología , Trasplante de Riñón/efectos adversos , Diabetes Mellitus/genética , Estudios de Seguimiento , Humanos , Terapia de Inmunosupresión/métodos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Obesidad/epidemiología , Complicaciones Posoperatorias/epidemiología , Prevalencia , Análisis de Regresión , Estudios Retrospectivos , Factores de Riesgo , España/epidemiología , Factores de Tiempo
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