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1.
Ann Surg ; 2023 Dec 25.
Article in English | MEDLINE | ID: mdl-38146951

ABSTRACT

OBJECTIVE: To determine the role of the arterial splenomesenteric anastomosis (ASMA) vascular reconstruction technique in terms of arterial vascular complications in pancreas transplant (PT) recipients. SUMMARY BACKGROUND DATA: The ASMA technique was first described in 1992 by Hospital Clínic Barcelona group. Regardless that the iliac Y-graft technique is the most frequently used worldwide, evidence of arterial complications and implications of using a different back-table reconstruction is conspicuously absent in the literature. METHODS: Descriptive review of 407 PTs performed at a single center (1999-2019) by analyzing the type of arterial reconstruction technique, focusing on ASMA. The endpoints were the management of arterial complications and long-term patient and graft survival. RESULTS: ASMA was performed in 376 cases (92.4%) and a Y-graft in 31 cases (7.6%). A total of 34 arterial complications (8.3%) were diagnosed. In the ASMA group (n=30, 7.9%) they comprised: 15 acute thrombosis; 4 stenosis; 1 pseudoaneurysm and 10 diverse chronic arterial complications while in the Y-graft group (n=4, 12.9%) 3 acute thrombosis and 1 chronic artery-duodenal fistula occurred. Graft salvage was achieved in 16 patients (53.3%) from the ASMA group and in 2 (50%) from the Y-graft. After a median follow-up of 129.2 (IQR 25-75%, 77.2 -182) months the overall graft and patient survival for the whole cohort at 1, 5, and 10 years was 86.7%, 79.5%, 70.5%, and 98.5%, 95.3%, 92.5%, respectively. CONCLUSIONS: The ASMA proves to be a safe and more easily reproducible technique and should therefore be considered for first-line back-table reconstruction in the PT population.

2.
Clin Transplant ; 32(10): e13382, 2018 10.
Article in English | MEDLINE | ID: mdl-30129986

ABSTRACT

The aim of the present study was to determine the clinical characteristics, frequency of opportunistic infections (OI) in HCV-positive kidney recipients, and to evaluate HCV replication as a risk factor for developing an OI. We conducted a retrospective study of all kidney recipients from 2003 to 2014. A total of 1203 kidney transplants were performed during the study period. Opportunistic infections were recorded in 251 patients (21%) and nucleic acid amplification testing (NAAT) positivity in 75 (6%). Patients who are HCV NAAT positive were more likely to present an OI than those who are HCV NAAT negative (45% vs 20%, P < 0.001). Multivariate analysis showed the factors that were independently associated with the development of OI to be acute rejection, graft loss, post-transplantation hemodialysis, and HCV replication. Liver cirrhosis after transplantation could not be considered a risk factor to develop OI. To conclude, a high index of suspicion of OI must be maintained in the case of kidney recipients with HCV replication. Active surveillance of cytomegalovirus infection and other prophylactic strategies against OI should be considered after 6 month post-transplantation. Prompt initiation of DAA therapies may be a useful option aiming to decrease the incidence of OI after transplantation.


Subject(s)
Graft Rejection/etiology , Hepatitis C, Chronic/complications , Kidney Transplantation/adverse effects , Opportunistic Infections/etiology , Viremia/complications , Adolescent , Adult , Aged , Aged, 80 and over , Female , Follow-Up Studies , Graft Rejection/pathology , Graft Survival , Hepacivirus/isolation & purification , Hepatitis C, Chronic/virology , Humans , Male , Middle Aged , Opportunistic Infections/pathology , Postoperative Complications , Prognosis , Retrospective Studies , Risk Factors , Survival Rate , Transplant Recipients , Viremia/virology , Young Adult
3.
Transpl Infect Dis ; 19(4)2017 Aug.
Article in English | MEDLINE | ID: mdl-28508573

ABSTRACT

BACKGROUND: In the developed world, kidney transplantation (KT) in patients with human immunodeficiency virus (HIV) infection is well established. Developing countries concentrate 90% of the people living with HIV, but their experience is underreported. Regional differences may affect outcomes. OBJECTIVES: We compared the 3-year outcomes of patients with HIV infection receiving a KT in two different countries, in terms of incomes and development. METHODS: This was an observational, retrospective, double-center study, including all HIV-infected patients >18 years old undergoing KT. RESULTS: Between 2005 and 2015, 54 KTs were performed (39 in a Brazilian center, and 15 in a Spanish center). Brazilians had less hepatitis C virus co-infection (5% vs 27%, P=.024). Median cold ischemia time was higher in Brazil (25 vs 18 hours, P=.001). Biopsy-proven acute rejection (AR) was higher in Brazil (33% vs 13%, P=.187), as were the number of AR episodes (22 vs 4, P=.063). Patient survival at 3 years was 91.3% in Brazil and 100% in Spain; P=.663. All three cases of death in Brazil were a result of bacterial infections within the first year post transplant. At 3 years, survival free from immunosuppressive changes was lower in Brazil (56% vs 90.9%, P=.036). Raltegravir-based treatment to avoid interaction with calcineurin inhibitor was more prevalent in Spain (80% vs 3%; P<.001). HIV infection remained under control in all patients, with undetectable viral load and no opportunistic infections. CONCLUSION: Important regional differences exist in the demographics and management of immunosuppression and antiretroviral therapy. These details may influence AR and infectious complications. Non-AIDS infections leading to early mortality in Brazil deserve special attention.


Subject(s)
Anti-Retroviral Agents/therapeutic use , HIV Infections/virology , Immunosuppressive Agents/therapeutic use , Kidney Transplantation , Adult , Brazil , Calcineurin Inhibitors/therapeutic use , Cohort Studies , Demography , Drug Interactions , Female , Graft Survival , HIV Infections/complications , HIV Infections/drug therapy , Humans , Immunosuppression Therapy , Kidney Function Tests , Male , Middle Aged , Retrospective Studies , Spain , Treatment Outcome
4.
Clin Transplant ; 30(8): 872-9, 2016 08.
Article in English | MEDLINE | ID: mdl-27146439

ABSTRACT

INTRODUCTION: The clinical results of ABO-incompatible (ABOi) and ABO-compatible (ABOc) kidney transplantation (KT) are similar. Protocol kidney biopsies (PKB) of ABOi transplant recipients show positivity for C4d without evidence of antibody-mediated rejection (ABMR), but little is known about the histologic progression. METHOD: We evaluated histologic parameters in PKB at 12 months and also compared clinical outcome at 1 year. This is a prospective observational study conducted between 2009 and 2013. We performed 146/30 ABOc/ABOi consecutive living-donor KT with PKB as well as additional indication biopsies. In the ABOi group, the desensitization protocol consisted of rituximab, plasma exchange or immunoadsorption, and immunoglobulins. RESULTS: In indication biopsies during the first year, T-cell-mediated rejection Banff ≥immunoadsorption was 8.2% vs 6.7% (P=.561) and ABMR 4.8% vs 13.3% (P=.095). At 1 year, PKB (ABOc/ABOi) showed differences in borderline rejection lesions (6.8% vs 23.3% [P=.012]) and in C4d positivity in the ABOi group (P=.001). Interstitial fibrosis and tubular atrophy (IFTA) lesions (ABOc/ABOi) were 68.4% vs 63.2% (P=.348). Transplant glomerulopathy was 0.7% vs 3.3% (P=.373) at 1 year. CONCLUSIONS: Our PKB ABOi series shows at 1 year more borderline lesions independent of ABO titers, HLA incompatibility, and the presence of antidonor antibody, but do not show more IFTA nor transplant glomerulopathy. No clinical differences were observed between ABOi and ABO transplants.


Subject(s)
ABO Blood-Group System/immunology , Blood Group Incompatibility/complications , Graft Rejection/etiology , Kidney Transplantation/adverse effects , Living Donors , Transplant Recipients , Adult , Aged , Biopsy , Blood Group Incompatibility/immunology , Female , Follow-Up Studies , Graft Rejection/diagnosis , Graft Rejection/immunology , Graft Survival , Humans , Male , Middle Aged , Prospective Studies , Young Adult
6.
Mycoses ; 56(2): 162-7, 2013 Mar.
Article in English | MEDLINE | ID: mdl-22897802

ABSTRACT

Candida peritonitis is a potentially life-threatening infection after abdominal transplantation, although there is scant information regarding its incidence and outcome. We analysed the incidence rate and outcome of Candida peritonitis in 717 liver or pancreas transplant recipients. Five cases of Candida peritonitis were diagnosed, representing the second most frequent cause of invasive fungal infection in the cohort. The incidence rate of Candida peritonitis during the first 30 days after transplantation was 6.5 cases/10 000 transplant days in pancreas recipients and 1.2 cases/10 000 transplant days in liver recipients (P = 0.035). Four of the five patients received an echinocandin in combination with other antifungal. All patients were alive and with good graft function at 1-year follow-up. In our series, Candida peritonitis in liver and pancreas transplant recipients was not uncommon and had a good prognosis.


Subject(s)
Candidiasis/epidemiology , Liver Transplantation/adverse effects , Pancreas Transplantation/adverse effects , Postoperative Complications/epidemiology , Adult , Aged , Antifungal Agents/therapeutic use , Candida , Candidiasis/drug therapy , Candidiasis/etiology , Candidiasis/microbiology , Cohort Studies , Female , Humans , Male , Middle Aged , Peritonitis/drug therapy , Peritonitis/epidemiology , Peritonitis/etiology , Peritonitis/microbiology , Postoperative Complications/drug therapy , Postoperative Complications/etiology , Postoperative Complications/microbiology , Prospective Studies
7.
Curr HIV/AIDS Rep ; 9(3): 187-99, 2012 Sep.
Article in English | MEDLINE | ID: mdl-22706955

ABSTRACT

Antiretroviral therapy has been immensely successful in reducing the incidence of opportunistic infections and death after HIV infection. This has resulted in heightened interest in noninfectious comorbidities including kidney disease. Although HIV-associated nephropathy, the most ominous kidney disease related to the direct effects of HIV, may be prevented and treated with antiretrovirals, kidney disease remains an important issue in this population. In addition to the common risk factors for kidney disease of diabetes mellitus and hypertension, HIV-infected individuals have a high prevalence of other risk factors, including hepatitis C and exposure to antiretrovirals and other medications. Therefore, the differential diagnosis is vast. Early identification (through efficient screening) and prompt treatment of kidney disease in HIV-infected individuals are critical to lead to better outcomes. This review focuses on clinical and epidemiological issues, treatment strategies (including dialysis and kidney transplantation), and recent advances among kidney disease in the HIV population.


Subject(s)
AIDS-Associated Nephropathy/physiopathology , Acquired Immunodeficiency Syndrome/physiopathology , Acute Kidney Injury/virology , Hepatitis C/physiopathology , Kidney Failure, Chronic/virology , Renal Dialysis , AIDS-Associated Nephropathy/therapy , Acquired Immunodeficiency Syndrome/complications , Acquired Immunodeficiency Syndrome/drug therapy , Acute Kidney Injury/physiopathology , Acute Kidney Injury/therapy , Antiretroviral Therapy, Highly Active/adverse effects , Diagnosis, Differential , Female , Hepatitis C/complications , Hepatitis C/therapy , Humans , Incidence , Kidney Failure, Chronic/physiopathology , Kidney Failure, Chronic/therapy , Kidney Transplantation/statistics & numerical data , Male , Renal Dialysis/statistics & numerical data , Risk Factors
8.
Kidney Int ; 79(8): 825-42, 2011 Apr.
Article in English | MEDLINE | ID: mdl-21248716

ABSTRACT

The prognosis of human immunodeficiency virus (HIV) infection has improved in recent years with the introduction of antiretroviral treatment. While the frequency of AIDS-defining events has decreased as a cause of death, mortality from non-AIDS-related events including end-stage renal diseases has increased. The etiology of chronic kidney disease is multifactorial: immune-mediated glomerulonephritis, HIV-associated nephropathy, thrombotic microangiopathies, and so on. HIV infection is no longer a contraindication to transplantation and is becoming standard therapy in most developed countries. The HIV criteria used to select patients for renal transplantation are similar in Europe and North America. Current criteria state that prior opportunistic infections are not a strict exclusion criterion, but patients must have a CD4+ count above 200 cells/mm(3) and a HIV-1 RNA viral load suppressible with treatment. In recent years, more than 200 renal transplants have been performed in HIV-infected patients worldwide, and mid-term patient and graft survival rates have been similar to that of HIV-negative patients. The main issues in post-transplant period are pharmacokinetic interactions between antiretrovirals and immunosuppressants, a high rate of acute rejection, the management of hepatitis C virus coinfection, and the high cardiovascular risk after transplantation. More studies are needed to determine the most appropriate antiretroviral and immunosuppressive regimens and the long-term outcome of HIV infection and kidney graft.


Subject(s)
HIV Infections/complications , Kidney Failure, Chronic/complications , Kidney Failure, Chronic/surgery , Kidney Transplantation , Anti-HIV Agents/administration & dosage , Cardiovascular Diseases/complications , Contraindications , Drug Interactions , Europe , Graft Rejection/etiology , Hepatitis C/complications , Humans , Immunosuppressive Agents/administration & dosage , Kidney Failure, Chronic/etiology , Kidney Transplantation/adverse effects , Kidney Transplantation/statistics & numerical data , Pancreas Transplantation , Patient Selection , Renal Replacement Therapy , Tissue Donors , United States , Waiting Lists
9.
Transpl Int ; 24(1): e6-12, 2011 Jan.
Article in English | MEDLINE | ID: mdl-20955469

ABSTRACT

Toxoplasmosis after solid organ transplantation is a complication associated with high morbidity and mortality. Universal prophylaxis with trimethoprim-sulfamethoxazole (TMP-SMX) is effective to prevent post-transplant toxoplasmosis. We report two cases of renal transplant recipients with negative antibodies against Toxoplasma gondii pretransplant who developed toxoplasmosis after TMP-SMX discontinuation. We have also performed a review of published cases of primary toxoplasmosis after renal transplantation. Of 20 cases reviewed, 11 were male and the mean age was 37.8 years (SD = 13.8). Donor serology for T. gondii was determined in 15 donors, two of them (13%) with negative immunoglobulin (Ig)G and four (27%) with positive IgG and IgM antibodies. Fever was present in 85% of primary toxoplasmosis and hematologic abnormalities were observed in 69% of the cases. Ten patients died (50%). All patients with fatal outcomes had clinical evidence of toxoplasmosis during the early post-transplant period (first 90 days), while no patient with late toxoplasmosis died (P = 0.003). Primary toxoplasmosis is associated with high mortality rates and TMP-SMX prophylaxis can delay the onset of symptoms resulting in an improvement of prognosis.


Subject(s)
Kidney Transplantation/adverse effects , Toxoplasmosis/prevention & control , Trimethoprim, Sulfamethoxazole Drug Combination/therapeutic use , Adolescent , Adult , Antibodies, Protozoan/analysis , Atovaquone/therapeutic use , Female , Humans , Immunoglobulin M/analysis , Male , Middle Aged , Tissue Donors , Toxoplasma/immunology , Toxoplasmosis/drug therapy
10.
Transplantation ; 85(2): 298-302, 2008 Jan 27.
Article in English | MEDLINE | ID: mdl-18212637

ABSTRACT

The aims of the study were to evaluate the incidence and the clinical implications of human herpesvirus (HHV)-7 primary infection in patients undergoing kidney transplantation and the probable interactions between the three beta-herpesviruses (cytomegalovirus [CMV], HHV-6, and HHV-7). Sixty kidney transplant recipients had sequential plasma and whole blood samples collected prior to transplantation and at 7, 14, 21, 28, 45, 60, 75, 90, and 180 days posttransplantation. We used indirect immunofluorescence assays to detect HHV-7 immunoglobulin (Ig) G antibodies in plasma and quantitative real-time polymerase chain reaction to assess CMV, HHV-6 and HHV-7 viral loads. Sixteen out of 60 patients (27%) did not show HHV-7 IgG antibodies prior to transplantation and they were selected for this study. Whereas 3 (18.75%) out of the 16 HHV-7 seronegative patients seroconverted after transplantation, only one patient (6%) had a high HHV-7 viral load from the seventh day posttransplantation in consecutive blood samples during follow-up without clinical manifestations. In our study, the incidence of posttransplant HHV-7 primary infection was low and asymptomatic.


Subject(s)
Herpesvirus 7, Human , Kidney Transplantation/adverse effects , Postoperative Complications/virology , Roseolovirus Infections/epidemiology , Antibodies, Viral/blood , Cohort Studies , DNA, Viral/blood , Follow-Up Studies , Humans , Immunoglobulin G/blood , Polymerase Chain Reaction , Postoperative Complications/epidemiology , Prospective Studies , Spain , Viral Load
11.
Braz J Infect Dis ; 22(3): 193-201, 2018.
Article in English | MEDLINE | ID: mdl-29782827

ABSTRACT

BACKGROUND: In people living with HIV, much is known about chronic kidney disease, defined as a glomerular filtration rate under 60mL/min. However, there is scarce data about prevalence and risk factors for milder impairment (60-89mL/min). OBJECTIVE: The present study aims to assess the influence of sex, antiretroviral therapy, and classical risk factors on the occurrence of mild decreased renal function in a large Spanish cohort of HIV-infected patients. METHODS: Cross-sectional, single center study, including all adult HIV-1-infected patients under antiretroviral treatment with at least two serum creatinine measures during 2014, describing the occurrence of and the risk factors for mildly decreased renal function (eGFR by CKD-EPI creatinine equation of 60-89mL/min). RESULTS: Among the 4337 patients included, the prevalence rate of mildly reduced renal function was 25%. Independent risk factors for this outcome were age older than 50 years (OR 3.03, 95% CI 2.58-3.55), female sex (OR 1.23, 95% CI 1.02-1.48), baseline hypertension (OR 1.57, 95% CI 1.25-1.97) or dyslipidemia (OR 1.48, 95% CI 1.17-1.87), virologic suppression (OR 1.88, 95% CI 1.39-2.53), and exposure to tenofovir disoproxil-fumarate (OR 1.67, 95% CI 1.33-2.08) or ritonavir-boosted protease-inhibitors (OR 1.19, 95% CI 1.03-1.39). CONCLUSIONS: Females and patients over 50 seem to be more vulnerable to renal impairment. Potentially modifiable risk factors and exposure to tenofovir disoproxil-fumarate or ritonavir-boosted protease-inhibitors are present even in earlier stages of chronic kidney dysfunction. It remains to be determined whether early interventions including antiretroviral therapy changes (tenofovir alafenamide, cobicistat) or improving comorbidities management will improve the course of chronic kidney disease.


Subject(s)
Anti-HIV Agents/adverse effects , HIV Infections/complications , HIV Infections/drug therapy , HIV Infections/epidemiology , Kidney Failure, Chronic/epidemiology , Kidney Failure, Chronic/etiology , Adolescent , Adult , Age Factors , Aged , Aged, 80 and over , Antiretroviral Therapy, Highly Active/adverse effects , Comorbidity , Cross-Sectional Studies , Female , Glomerular Filtration Rate , Humans , Male , Middle Aged , Prevalence , Risk Assessment , Risk Factors , Sex Factors , Spain/epidemiology , Statistics, Nonparametric , Treatment Outcome , Viral Load , Young Adult
12.
Transplantation ; 84(3): 429-32, 2007 Aug 15.
Article in English | MEDLINE | ID: mdl-17700171

ABSTRACT

The aim was to evaluate feasibility and safety of calcineurin inhibitor-free immunosuppression in high-risk donor kidney transplantation with sequential sirolimus introduction. Kidney transplant patients (n=76) with a donor aged >60 years, donor with acute renal failure, or a nonheartbeating donor were included. Immunosuppression consisted of antithymocyte globulin or basiliximab, mycophenolate mofetil, prednisone, and sequential introduction of sirolimus. One-year patient survival was 96.2% and 95.8%; graft survival was 94.2% and 91.7%; acute rejection rates were 21.2% and 12.4%; delayed graft function was 21.2% and 66.7%; and creatinine clearance was 58+/-20 mL/min and 56+/-21 mL/min for the brain-dead donor group and the nonheartbeating donor group, respectively. Most adverse events were infections, but also three lymphoceles, three urinary fistulas, three wound seromas. Sequential sirolimus introduction in high-risk donor kidney transplantation was found to lead to good patient and graft survival and incidence of acute rejection and delayed graft function.


Subject(s)
Antibodies, Monoclonal/therapeutic use , Immunosuppressive Agents/therapeutic use , Kidney Transplantation/immunology , Mycophenolic Acid/analogs & derivatives , Prednisone/therapeutic use , Recombinant Fusion Proteins/therapeutic use , Sirolimus/therapeutic use , Adult , Aged , Basiliximab , Calcineurin Inhibitors , Dose-Response Relationship, Drug , Drug Therapy, Combination , Female , Graft Rejection/immunology , Graft Rejection/prevention & control , Humans , Kidney Transplantation/physiology , Living Donors , Male , Middle Aged , Mycophenolic Acid/therapeutic use , Pilot Projects , Renal Insufficiency , Risk Factors
13.
Transplantation ; 83(11): 1493-500, 2007 Jun 15.
Article in English | MEDLINE | ID: mdl-17565323

ABSTRACT

BACKGROUND: Genetically defined deficiencies in key components of the innate immune system have been associated with a greater risk of infection. The aim of this study was to assess the influence of genetic variability of innate immune receptors (mannose-binding lectin [MBL], mannose-associated serine-protease-2 [MASP-2], and Toll-like receptors [TLR4]) in the risk of infections after a kidney transplantation. METHODS: All patients undergoing a kidney or kidney-pancreas transplantation during a 3-year period were included. Functionally relevant mutations in MBL2, MASP2, and TLR4 genes were determined by DNA sequencing. The incidence of major bacterial infections, asymptomatic cytomegalovirus (CMV) infection, and CMV disease were compared among groups. RESULTS: There were no differences regarding major transplant characteristics among groups. Older age, requirements for posttransplant hemodialysis, and pretransplant diabetes, but not gene polymorphisms, were associated with a greater number of bacterial infections. In univariate analysis, low-MBL genotypes were associated with CMV disease in pretransplant CMV seropositive patients (P=0.015), whereas the TLR4 mutation was associated with higher risk of CMV primary infection (P=0.024). TLR4 mutation was an independent factor associated with CMV disease (odds ratio 5.84, 95% confidence interval 1.35-25.20, P=0.018). CONCLUSION: Polymorphisms of innate immunity receptors, especially TLR4 mutation, were associated with higher risk of CMV disease, while susceptibility to other infectious disorders was not observed.


Subject(s)
Bacterial Infections/etiology , Cytomegalovirus Infections/etiology , Genetic Predisposition to Disease , Immunity, Innate/genetics , Kidney Transplantation/adverse effects , Mannose-Binding Lectin/genetics , Polymorphism, Genetic , Toll-Like Receptor 4/genetics , Bacterial Infections/genetics , Cytomegalovirus Infections/genetics , Genotype , Humans , Mutation
14.
Atherosclerosis ; 184(1): 94-102, 2006 Jan.
Article in English | MEDLINE | ID: mdl-15893756

ABSTRACT

Chronic hemodialysis patients show a high incidence and prevalence of cardiovascular disease of multifactorial etiology and an association between dyslipidemia and accelerated atherosclerosis. We analyzed characteristics of dyslipidemia in 1824 hemodialysis patients (59% men; mean age 65 +/- 15 years) in Catalonia and identified risk factors by logistic regression. Prevalence of dyslipidemia was high (63%). Most frequent lipid alterations were decreased HDL cholesterol (40%), hypertriglyceridemia (31%) and hypercholesterolemia (19%). Total cholesterol/HDL ratio was elevated in 23%. Body mass index (OR 1.08; 95% CI 1.05-1.11), diabetes mellitus (1.4; 1.09-1.79), ischemic heart disease (1.38, 1.08-1.75) and stroke (1.30; 1.0-1.69) were independent factors associated with dyslipidemia. Lengthy time (> 7 years) on dialysis (0.77; 0.59-0.99) and female sex (0.78; 0.64-0.96) were independent protective factors. A significant reduction in the risk of developing dyslipidemia was observed after the age of 50. Lipid-lowering drug use was low (19%), with statins being the most frequent (83%). The percentage of patients reaching target LDL levels according to individual cardiovascular risk (ATPIII) was unsatisfactory, particularly in high risk patients (52%). In light of the high prevalence of dyslipidemia and low adherence to target LDL goals, we conclude that strict control of dyslipidemia should be included in cardiovascular risk prevention strategies for chronic hemodialysis patients.


Subject(s)
Dyslipidemias/epidemiology , Renal Dialysis/adverse effects , Adolescent , Adult , Age Factors , Aged , Aged, 80 and over , Biomarkers/blood , Child , Child, Preschool , Cholesterol, HDL/blood , Cholesterol, LDL/blood , Dyslipidemias/blood , Dyslipidemias/etiology , Female , Humans , Incidence , Male , Middle Aged , Prevalence , Risk Factors , Sex Factors , Spain/epidemiology
15.
Diagn Microbiol Infect Dis ; 55(1): 47-54, 2006 May.
Article in English | MEDLINE | ID: mdl-16500066

ABSTRACT

We prospectively evaluated lower respiratory tract infections in solid organ transplantation (SOT) patients to determine the microbiologic diagnosis and clinical outcomes. We diagnosed 83 cases of pneumonia, 38 of which were community acquired and 45 were nosocomial. Those with bilateral infiltrates or absence of improvement after 3 days of treatment underwent fiberoptic bronchoscopy. Bacterial pneumonia was the most frequent diagnosis and mixed infection predominated in the nosocomial group (11/45 nosocomial versus 1/38 community). Fiberoptic bronchoscopy with bronchoalveolar lavage had higher diagnostic yield in nosocomial pneumonia (77% versus 47%). Mortality differences between the 2 groups were 58% nosocomial versus 8% community-acquired infections (P < 0.001). SOT patients with nosocomial pneumonia, or those who needed mechanical ventilation, had a high mortality rate and benefits from the fiberoptic diagnostic techniques.


Subject(s)
Community-Acquired Infections/microbiology , Cross Infection/microbiology , Organ Transplantation , Pneumonia, Bacterial/microbiology , Pneumonia, Viral/microbiology , Adolescent , Adult , Aged , Bacteria/classification , Bacteria/isolation & purification , Bronchoalveolar Lavage Fluid/microbiology , Bronchoalveolar Lavage Fluid/virology , Bronchoscopy , Community-Acquired Infections/drug therapy , Cross Infection/drug therapy , Female , Humans , Male , Microbiological Techniques/methods , Middle Aged , Pneumonia, Bacterial/diagnosis , Pneumonia, Bacterial/drug therapy , Pneumonia, Viral/diagnosis , Pneumonia, Viral/drug therapy , Prospective Studies , Sputum/microbiology , Sputum/virology , Time Factors , Viruses/classification , Viruses/isolation & purification
16.
Transplantation ; 80(7): 989-92, 2005 Oct 15.
Article in English | MEDLINE | ID: mdl-16249750

ABSTRACT

Kidney transplantation in elderly patients is a good therapeutic option, but the incidence of infections compared to younger patients must be studied. Case and control study was performed with 40 cases (patients older than 65) and 40 controls (younger than 65) receiving a kidney transplant between January 2000 and August 2002. In 32 cases (80%) and in 14 controls (32%), some type of infection appeared during the follow-up (odds ratio [OR] 5; 95% CI 1.6-20). The percentage of patients with bacterial infections was higher in the cases (70% vs. 28%; OR 5.7; 95% CI 1.9-20), especially for urinary infections. No differences for viral and fungal infections were observed in the two groups. Mortality rate was 13% in the cases (5% due to infections), whereas there was no controls' mortality. Although the number of bacterial infections was higher, kidney transplantation in elderly patients is a secure procedure.


Subject(s)
Bacterial Infections/epidemiology , Kidney Transplantation , Urinary Tract Infections/epidemiology , Age Factors , Aged , Anti-Bacterial Agents/therapeutic use , Bacteria/isolation & purification , Bacterial Infections/etiology , Bacterial Infections/prevention & control , Case-Control Studies , Female , Humans , Incidence , Kidney Transplantation/mortality , Male , Urinary Tract Infections/etiology , Urinary Tract Infections/prevention & control
17.
Foot Ankle Int ; 23(3): 260-3, 2002 Mar.
Article in English | MEDLINE | ID: mdl-11934071

ABSTRACT

Uremic tumoral calcinosis is an uncommon, benign condition characterized by slow-growing calcified periarticular soft tissue masses of varying size. We describe two patients with chronic renal failure on hemodialysis presenting uremic tumoral calcinosis, one in the fifth toe of the right foot and the other in the dorsum of the left foot between the first and second metatarsals. Excision of the calcic masses and parathyroidectomy were successfully performed in both patients. These cases are unusual in their rapid onset, mimicking acute infection. Differential diagnosis, radiological features and therapy are discussed.


Subject(s)
Calcinosis/pathology , Foot Diseases/pathology , Soft Tissue Infections/diagnosis , Uremia/complications , Acute Disease , Adult , Calcinosis/etiology , Calcinosis/surgery , Diagnosis, Differential , Female , Foot Diseases/etiology , Foot Diseases/surgery , Humans , Kidney Failure, Chronic/complications , Kidney Failure, Chronic/therapy , Male , Renal Dialysis , Soft Tissue Neoplasms/pathology , Uremia/therapy
18.
Transplant Res ; 3(1): 4, 2014 Feb 03.
Article in English | MEDLINE | ID: mdl-24491040

ABSTRACT

UNLABELLED: Although recipients of a first HLA-identical living-donor kidney transplant seem to need less immunosuppression, there are no guideline recommendations for these patients, and few prospective trials are available. METHODS: We analyzed all PRA-negative patients who received a first kidney transplant from an HLA-identical living donor. The patients received no antibody induction. An intraoperative bolus of 500 mg of methylprednisolone was administered. Then, steroid therapy was withdrawn within one week. Tacrolimus and mycophenolate treatment were started 3 days before transplantation with tacrolimus target levels of 4 to 8 ng/mL. In the absence of rejection, tacrolimus was withdrawn between 3 and 12 months post-transplant to reach mycophenolate mofetil monotherapy of 2 g/day or equivalent. RESULTS: Six patients were treated with the above protocol. At last follow-up, graft and patient survival were 100%. MDRD glomerular filtration rates were 54, 60, and 62 mL/min at 3 months, 12 months and last follow-up, respectively. None of the patients developed PRA post-transplant. One episode of acute rejection Banff IA occurred 9 years after transplantation due to non-adherence with good outcome after treatment. The mean number of concomitant drugs given with mycophenolate was 2.6. Four patients needed antihypertensive drugs. CONCLUSION: Steroid-free de novo treatment and calcineurin-inhibitor weaning with mycophenolate monotherapy is feasible in first HLA-identical kidney transplantation from a living sibling.

19.
Braz. j. infect. dis ; 22(3): 193-201, May-June 2018. tab, graf
Article in English | LILACS | ID: biblio-974216

ABSTRACT

ABSTRACT Background In people living with HIV, much is known about chronic kidney disease, defined as a glomerular filtration rate under 60 mL/min. However, there is scarce data about prevalence and risk factors for milder impairment (60-89 mL/min). Objective The present study aims to assess the influence of sex, antiretroviral therapy, and classical risk factors on the occurrence of mild decreased renal function in a large Spanish cohort of HIV-infected patients. Methods Cross-sectional, single center study, including all adult HIV-1-infected patients under antiretroviral treatment with at least two serum creatinine measures during 2014, describing the occurrence of and the risk factors for mildly decreased renal function (eGFR by CKD-EPI creatinine equation of 60-89 mL/min). Results Among the 4337 patients included, the prevalence rate of mildly reduced renal function was 25%. Independent risk factors for this outcome were age older than 50 years (OR 3.03, 95% CI 2.58-3.55), female sex (OR 1.23, 95% CI 1.02-1.48), baseline hypertension (OR 1.57, 95% CI 1.25-1.97) or dyslipidemia (OR 1.48, 95% CI 1.17-1.87), virologic suppression (OR 1.88, 95% CI 1.39-2.53), and exposure to tenofovir disoproxil-fumarate (OR 1.67, 95% CI 1.33-2.08) or ritonavir-boosted protease-inhibitors (OR 1.19, 95% CI 1.03-1.39). Conclusions Females and patients over 50 seem to be more vulnerable to renal impairment. Potentially modifiable risk factors and exposure to tenofovir disoproxil-fumarate or ritonavir-boosted protease-inhibitors are present even in earlier stages of chronic kidney dysfunction. It remains to be determined whether early interventions including antiretroviral therapy changes (tenofovir alafenamide, cobicistat) or improving comorbidities management will improve the course of chronic kidney disease.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Aged, 80 and over , Young Adult , HIV Infections/complications , HIV Infections/drug therapy , HIV Infections/epidemiology , Anti-HIV Agents/adverse effects , Kidney Failure, Chronic/etiology , Kidney Failure, Chronic/epidemiology , Spain/epidemiology , Comorbidity , Sex Factors , Prevalence , Cross-Sectional Studies , Risk Factors , Age Factors , Treatment Outcome , Statistics, Nonparametric , Risk Assessment , Viral Load , Antiretroviral Therapy, Highly Active/adverse effects , Glomerular Filtration Rate
20.
J Acquir Immune Defic Syndr ; 57(4): 276-83, 2011 Aug 01.
Article in English | MEDLINE | ID: mdl-21623213

ABSTRACT

BACKGROUND: Prognosis of HIV-infected patients on dialysis has improved. Few studies have compared survival between HIV-infected and HIV-negative patients on dialysis in the combined antiretroviral therapy (cART) era. We compared the outcome of HIV-infected patients on dialysis with a matched HIV-negative cohort. METHODS: National, multicenter, retrospective cohort study of HIV-infected patients starting dialysis in Spain (1999-2006). Matching criteria for HIV-negative patients were dialysis center, year of starting dialysis, age, sex, and race. RESULTS: The study population comprised 122 patients, 66 HIV-infected, and 66 HIV-negative patients. Median age was 41 years, and all but 4 HIV-infected patients were white. HIV-associated nephropathy was only present in 4 cases. HIV-infected patients were less frequently included on the kidney transplantation waiting list (17% vs 62%, P < 0.001). They also had more hepatitis C virus coinfection (76% vs 11%, P < 0.001), fewer cardiovascular events (62% vs 88%, P = 0.001), fewer kidney transplants (4.5% vs 38%, P < 0.001), and higher mortality (32% vs 1.5%, P < 0.001). Survival rates [95% confidence interval (CI)] at 1, 3, and 5 years for HIV-infected patients were 95.2% (89.9%-100%), 71.7% (59.7%-83.7%), and 62.7% (46.6%-78.8%). Five-year survival for HIV-negative patients was 94.4% (83.8%-100%) (P < 0.001). Multivariate analysis revealed the following variables to be associated with death in HIV-infected patients: peritoneal dialysis vs hemodialysis [hazard ratio; (95% CI): 2.88 (1.16-7.17)] and being on effective cART [hazard ratio (95% CI): 0.39 (0.16-0.97)]. CONCLUSIONS: Medium-term survival of HIV-infected patients on dialysis was lower than that of matched HIV-negative patients. Fewer HIV-infected patients had access to kidney transplantation. Being on effective cART improves survival. Further studies are needed to determine whether peritoneal dialysis increases mortality.


Subject(s)
Anti-HIV Agents/therapeutic use , HIV Infections/complications , HIV-1 , Renal Dialysis , Renal Insufficiency/etiology , Adult , Anti-HIV Agents/adverse effects , Cohort Studies , Drug Therapy, Combination , Female , HIV Infections/drug therapy , HIV Infections/mortality , Hepatitis, Viral, Human/complications , Humans , Male , Middle Aged , Peritoneal Dialysis/mortality , Prognosis , Renal Dialysis/mortality , Renal Insufficiency/mortality , Renal Insufficiency/therapy , Retrospective Studies , Risk Factors , Spain/epidemiology , Treatment Outcome
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