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1.
J Environ Manage ; 351: 119797, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38086111

RESUMEN

Finding solutions for a sustainable coexistence between wildlife and humans is considered among the most challenging environmental management issues for scientists, conservationists, managers, and stockholders world-wide. Depredation by the common bottlenose dolphin (Tursiops truncatus) on small scale fisheries has increased in the recent years, leading to a growing conflict in many areas of the Mediterranean Sea and pressing for urgent management solutions. This study aims at developing a management framework for a sustainable coexistence between fishers and dolphins in Sardinia (Mediterranean Sea). Relying on the combination of different approaches (field study, literature review and Multi Criteria Decision Analysis), the scientific evidence necessary for understanding dolphin depredation were updated and improved, the related economic damage was calculated, and different management options were identified and evaluated by several stakeholder groups to support the decision-making process. Averaging for all investigated net types (gillnet and trammel net), a depredation frequency of 53% was found, the highest values ever found in both Sardinia and many other Mediterranean sites. Depredation probability was influenced by different factors, such as net type, fishing operation duration, depth of the fishing site and period. The estimated economic damage due to depredation ranges on average between 6492 and 11,925 euro per year and depends on the type of fishing net. The results from the field study, the literature review and the stakeholder involvement allowed us to define the most plausible and shared management options, identifying a framework for assessing and managing the conflict between fishers and dolphins for the creation of a more sustainable vision for the future.


Asunto(s)
Delfín Mular , Delfines , Humanos , Animales , Animales Salvajes , Explotaciones Pesqueras , Mar Mediterráneo , Probabilidad
2.
Prog Transplant ; 27(4): 346-353, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-29187134

RESUMEN

INTRODUCTION: Renal allograft biopsy is the gold standard for the detection of histological lesions of chronic allograft dysfunction. The identification of a noninvasive routine test would be desirable. Elastosonography is used to assess tissue stiffness according to viscosity, and no data are available on the use of point quantification shear-wave elastography (ElastPQ) for the evaluation of renal chronic lesions. RESEARCH QUESTION: To evaluate the feasibility of ElastPQ to assess cortical allograft stiffness and to determine the correlation of clinical, biological, and pathological factors with the diagnostic accuracy of kidney stiffness values in patients with histological lesions. DESIGN: Forty-two patients underwent kidney transplant biopsy and 10 valid measurements of ElastPQ, blindly performed by 2 operators. The interobserver reproducibility was assessed according to intraclass correlation coefficient. The ElastPQ measurements and the clinical data were compared using the Spearman correlation analysis. RESULTS: 97.6% reliable measurements were obtained using ElastPQ, with an excellent interobserver agreement. The kidney stiffness was significantly higher in the patients with a time since transplantation >12 months and was correlated with chronic lesions (interstitial fibrosis, tubular atrophy transplant glomerulopathy, and mesangial matrix), with the interstitial fibrosis/tubular atrophy, score and with the sum of the scores of the chronic lesions. Mesangial matrix increase is the only independent determinant of kidney stiffness. DISCUSSION: ElastPQ is a noninvasive, reproducible, and sensitive diagnostic tool able to detect moderate/severe chronic lesions. Its routine use during follow-up can identify patients eligible for biopsy, which remains the gold standard exam for detecting chronic allograft dysfunction.


Asunto(s)
Diagnóstico por Imagen de Elasticidad/métodos , Supervivencia de Injerto , Corteza Renal/diagnóstico por imagen , Trasplante de Riñón , Hepatopatías/diagnóstico por imagen , Biopsia , Estudios de Factibilidad , Femenino , Humanos , Biopsia Guiada por Imagen , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Ultrasonografía Intervencional , Viscosidad
3.
Am J Transplant ; 14(11): 2515-25, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25155294

RESUMEN

Pretransplant donor biopsy (PTDB)-based marginal donor allocation systems to single or dual renal transplantation could increase the use of organs with Kidney Donor Profile Index (KDPI) in the highest range (e.g. >80 or >90), whose discard rate approximates 50% in the United States. To test this hypothesis, we retrospectively calculated the KDPI and analyzed the outcomes of 442 marginal kidney transplants (340 single transplants: 278 with a PTDB Remuzzi score<4 [median KDPI: 87; interquartile range (IQR): 78-94] and 62 with a score=4 [median KDPI: 87; IQR: 76-93]; 102 dual transplants [median KDPI: 93; IQR: 86-96]) and 248 single standard transplant controls (median KDPI: 36; IQR: 18-51). PTDB-based allocation of marginal grafts led to a limited discard rate of 15% for kidneys with KDPI of 80-90 and of 37% for kidneys with a KDPI of 91-100. Although 1-year estimated GFRs were significantly lower in recipients of marginal kidneys (-9.3, -17.9 and -18.8 mL/min, for dual transplants, single kidneys with PTDB score<4 and =4, respectively; p<0.001), graft survival (median follow-up 3.3 years) was similar between marginal and standard kidney transplants (hazard ratio: 1.20 [95% confidence interval: 0.80-1.79; p=0.38]). In conclusion, PTDB-based allocation allows the safe transplantation of kidneys with KDPI in the highest range that may otherwise be discarded.


Asunto(s)
Supervivencia de Injerto , Riñón , Donantes de Tejidos , Adulto , Anciano , Biopsia , Femenino , Humanos , Riñón/patología , Masculino , Persona de Mediana Edad
4.
Acta Neurol Scand ; 125(6): 403-9, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-21824115

RESUMEN

OBJECTIVES: To determine clinical and laboratory predictors of restless legs syndrome (RLS) in patients with end-stage kidney disease (ESKD) undergoing long-term hemodialysis (HD). MATERIALS AND METHODS: One hundred and sixty-two consecutive patients were assessed. History of sleep disturbances, neurological examination, clinical, and laboratory data were collected. Patients with and without RLS were compared, and a logistic regression model described the relations between independent predictors and RLS. RESULTS: Fifty-one patients (32%) currently had RLS (RLS+). RLS+ vs RLS- patients were more frequently women (49% vs 29%, P = 0.012), had first-degree relative with RLS (22% vs 6%, P = 0.004), insomnia (59% vs 36%, P = 0.007), peripheral neuropathy (41% vs 21%, P = 0.006), and low residual diuresis (92% vs 68% with below 500 ml/24 h, P = 0.001). Low (OR = 8.71, CI = 2.27-33.41; P = 0.002) and absent (OR = 4.96, CI = 1.52-16.20; P = 0.008) residual diuresis, peripheral neuropathy (OR = 4.00, CI = 1.44-11.14; P = 0.008), and first-degree relative with RLS (OR = 3.82, CI = 1.21-12.13; P = 0.023) significantly predicted RLS in ESKD patients undergoing HD. CONCLUSION: Positive family history for RLS together with reduced/absent residual renal function and peripheral neuropathy predicts the risk for RLS in ESKD patients undergoing HD. Longitudinal studies are warranted to correlate RLS occurrence with genetic and environmental factors.


Asunto(s)
Síndrome de las Piernas Inquietas/complicaciones , Uremia/complicaciones , Anciano , Anciano de 80 o más Años , Anuria/complicaciones , Femenino , Humanos , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/epidemiología , Masculino , Persona de Mediana Edad , Enfermedades del Sistema Nervioso Periférico/complicaciones , Enfermedades del Sistema Nervioso Periférico/epidemiología , Prevalencia , Recurrencia , Diálisis Renal , Síndrome de las Piernas Inquietas/diagnóstico , Síndrome de las Piernas Inquietas/epidemiología , Factores de Riesgo , Factores Sexuales
5.
Ultrasound J ; 14(1): 39, 2022 Sep 29.
Artículo en Inglés | MEDLINE | ID: mdl-36175746

RESUMEN

BACKGROUND: Medullary sponge kidney is generally considered a benign condition, gold standard for the diagnosis is urography but it has almost been replaced by UroCT that did not present the same sensibility. Although it is really rare, our sonography's findings were consistent with medullary sponge kidney in the transplanted kidneys. CASE PRESENTATION: A 45-year-old woman with a long history of double-kidney transplantation complained of frequent urinary tract infections, a history of vague loin pain and came to our attention for sonography follow-up. Her kidney function was normal, we did not find signs of infections in the transplanted kidneys and urinary findings were normal. Curiously, the transplanted kidneys came from a newborn and the patient received a double-kidney transplantation in order to guarantee a satisfactory renal function. CONCLUSIONS: Despite a long history of kidney transplantation, genetic disease should not be forgotten when symptoms and images recall to specific inherited alterations. Sonography has to be considered in diagnostic path of kidney cystic disease.

6.
Clin Neuroradiol ; 32(1): 69-78, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-34586427

RESUMEN

BACKGROUND: Adult polycystic kidney disease (ADPKD) still represents a major cause of renal failure and intracranial aneurisms (IA) have a higher prevalence in ADPKD than in the general population. Current guidelines suggest performing brain MRI only in the subjects with a positive familiar history of IAs or subarachnoid hemorrhage (SAH). This is a retrospective case-control analysis to evaluate the usefulness of a MR screening program in ADPKD patients. METHODS: We retrospectively analyzed all ADPKD patients followed in our outpatient clinic between 2016 and 2019 who underwent a brain MRI screening. We evaluated the presence of IAs and others brain abnormalities and compared our results with a non-ADPKD population (n = 300). We performed univariate and multivariate regression analysis to evaluate if general and demographic features, laboratory findings, clinical parameters and genetic test results correlated with IAs or other brain abnormalities presence. RESULTS: Among the patients evaluated 17 out of 156 (13.6%) ADPKD patients had IAs, compared to 16 out of 300 (5.3%) non-ADPKD controls (p < 0.005). Considering ADPKD patients presenting IAs, 12 (70.6%) had no family history for IAs or SAH. Genetic analysis was available for 97 patients: in the sub-population with IAs, 13 (76.5%) presented a PKD1 mutation and none a PKD2 mutation. We found that arachnoid cysts (AC) (p < 0.001) and arterial anatomical variants (p < 0.04) were significantly more frequent in ADPKD patients. CONCLUSION: In our population ADPKD patients showed a higher prevalence of IAs, AC and arterial variants compared to non-ADPKD. Most of the IAs were found in patients presenting a PKD1 mutation. We found a significant number of alterations even in those patients without a family history of IAs or SAH. The practice of submitting only patients with familial IAs or kidney transplantation candidates to MRI scan should be re-evaluated.


Asunto(s)
Riñón Poliquístico Autosómico Dominante , Adulto , Encéfalo , Humanos , Mutación , Riñón Poliquístico Autosómico Dominante/diagnóstico por imagen , Riñón Poliquístico Autosómico Dominante/genética , Estudios Retrospectivos , Canales Catiónicos TRPP/genética
7.
Mar Environ Res ; 169: 105375, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-34111774

RESUMEN

The present study aims at contributing to the knowledge of the spatial variability of coralligenous reefs through the evaluation of patterns ranging from local to biogeographic scale around the island of Sardinia. The coralligenous reef assemblages of six areas were studied through a hierarchical sampling design: three sites per area were selected, in each site three plots were sampled and in each plot ten photographic samples were collected. The structure of coralligenous reefs across closed biogeographic regions is described, highlighting that nearly pristine assemblages, although characterized by similar high diversity, can be either dominated by animals, such as gorgonians and bryozoans, or macroalgae. The observed variations seem largely related to biogeographic patterns rather than spatial distance, supporting the need to identify specific reference conditions to assess the ecological quality of this habitat depending on the biogeographic area to be monitored.


Asunto(s)
Antozoos , Algas Marinas , Animales , Biodiversidad , Arrecifes de Coral , Ecosistema , Italia
8.
Transpl Infect Dis ; 12(6): 521-5, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20604905

RESUMEN

Polyomavirus-associated nephropathy (PVAN) has become an important cause of graft loss in the last few years. The typical course of PVAN is characterized by an asymptomatic period of viruria followed, within weeks, by the development of viremia in the context of stable renal function. The persistence of viral replication characterized by high viremia, leads to parenchymal injuries and causes the development, within months, of PVAN that could lead to deterioration in graft function and graft loss. We reported, in a patient who received a renal transplant, an unusual presentation of PVAN characterized by the development of acute renal failurte earlier than would be expected after transplantation, where the histological presentation alone could be confused with an acute rejection. We underline the importance of the association of histological findings with the viral load in urine and blood and with ancillary techniques such as immunohistochemistry and polymerase chain reaction (PCR) in situ for virus detection. We also want to emphasize that decoy cells and PCR for BK virus DNA research could be considered among the diagnostic tools for possible acute renal failure in kidney transplant.


Asunto(s)
Lesión Renal Aguda/virología , Virus BK/genética , Trasplante de Riñón/efectos adversos , Infecciones por Polyomavirus/virología , Trasplante Homólogo/efectos adversos , Infecciones Tumorales por Virus/virología , Anciano , Virus BK/aislamiento & purificación , Humanos , Riñón/patología , Riñón/virología , Enfermedades Renales/patología , Enfermedades Renales/virología , Masculino , Reacción en Cadena de la Polimerasa , Poliomavirus/genética , Factores de Tiempo , Carga Viral , Viremia/patología , Viremia/virología
9.
Clin Nephrol ; 73(5): 403-7, 2010 May.
Artículo en Inglés | MEDLINE | ID: mdl-20420803

RESUMEN

Paget's disease is the second most common bone disease after osteoporosis and causes an excessive bone turnover. Moreover, chronic kidney failure causes an impairment of bone mineral metabolism and electrolytes and PTH homeostasis. As far as we know, this is the first reported case of Paget's disease in a hemodialysis patient: the patient was also affected by secondary hyperparathyroidism and was successfully treated with clodronate, cinacalcet and paracalcitol. The safety and efficacy of this combined therapy was periodically revised in a 12-month follow-up considering the common markers of bone turnover as well as the dosage of OPG, RANKL, IL-6 and MCSF, involved in the pathophysiology of Paget's disease.


Asunto(s)
Hiperparatiroidismo Secundario/complicaciones , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/terapia , Osteítis Deformante/etiología , Diálisis Renal , Anciano , Conservadores de la Densidad Ósea/uso terapéutico , Femenino , Humanos , Hiperparatiroidismo Secundario/diagnóstico , Hiperparatiroidismo Secundario/terapia , Fallo Renal Crónico/metabolismo , Osteítis Deformante/diagnóstico , Osteítis Deformante/terapia
10.
Minerva Urol Nefrol ; 62(1): 51-66, 2010 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-20424570

RESUMEN

Patients with end-stage renal disease are 10 to 20 times more at risk of cardiovascular death than the general population. Traditional cardiovascular risk factors are not able to explain the increase in the onset of cardiovascular diseases in dialysis patients. Some of the most important non traditional risk factors in uremic patients are: the inflammatory state of the patients, cytokines and growth factors, hyperhomocysteinemia, the presence of alterations of the calcium phosphorous product which can already be in progress when the glomerular filtration rate decreases to less than 60 mL/min. Clinically, these alterations cause vascular calcifications, calcifications of the heart valves and calcific uremic arteriolopathy or calciphylaxis. The pathogenesis of vascular calcification is complex and cannot be assigned to a simple, passive process: in fact, it includes factors which promote or inhibit calcification. In turn, these pathologic conditions have been found to be highly predictive of general and cardiovascular death. Given the serious clinical consequences that vascular calcifications can cause, it is necessary to carry out an early mapping of the traditional and non traditional risk factors of uremic patients as it seems that therapeutic interventions aimed at reducing or inverting the calcification process can improve the outcome of patients, above all when they are started quickly.


Asunto(s)
Calcinosis/etiología , Enfermedades Cardiovasculares/etiología , Fallo Renal Crónico/complicaciones , Diálisis Renal/efectos adversos , Calcinosis/sangre , Calcinosis/diagnóstico , Calcinosis/mortalidad , Calcifilaxia/etiología , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/mortalidad , Humanos , Mediadores de Inflamación/sangre , Fallo Renal Crónico/terapia , Pronóstico , Factores de Riesgo , Índice de Severidad de la Enfermedad
11.
G Ital Nefrol ; 26(2): 154-7, 2009.
Artículo en Italiano | MEDLINE | ID: mdl-19382070

RESUMEN

Native arteriovenous fistula is still the vascular access of choice in hemodialysis. Other options are arteriovenous graft or, in patients in whom it is not possible to create a surgical vascular access, a permanent venous catheter. International guidelines on vascular access for hemodialysis recommend an increase in the percentage of arteriovenous fistulas compared to other types of vascular access. An analysis of the data relative to the distribution of the types of vascular access in different countries highlights the difficulty in following this recommendation: the only country to have increased the number of arteriovenous fistulas in recent years is the US, where the percentage of grafts has decreased while the use of permanent catheters has increased. In Italy and the rest of Europe, the number of fistulas has remained stable, there has been a constant reduction in the number of grafts and an increase in the percentage of permanent catheters. The reasons for this distribution of the types of vascular access are multifactorial and include the increased average age of patients, frequent late referrals, and increased incidence of diabetes mellitus, cardiovascular disease, obesity, etc. These factors have brought about technical difficulties for the creation of fistulas and grafts, leading to an increase in the number of catheters used. In relation to the evolution of the clinical characteristics of dialysis patients, the permanent catheter should no longer be considered a last-choice vascular access: in selected patients, it can be a better choice than a surgical fistula or graft.


Asunto(s)
Derivación Arteriovenosa Quirúrgica , Cateterismo Venoso Central , Catéteres de Permanencia , Diálisis Renal/métodos , Humanos
12.
G Ital Nefrol ; 26 Suppl 45: S64-8, 2009.
Artículo en Italiano | MEDLINE | ID: mdl-19382097

RESUMEN

Stem cells are a potential source for the regeneration of many tissues, including damaged kidneys. The present study describes the adoption of hyaluronic- butyric acid monoesters (HB) to induce expression of nephrogenic genes by mesenchymal cells isolated from human placental membranes. HB at a concentration of 1 mg/mL induces chromatin opening and increases the expression of the observed markers (cadherin 11, CD24, RAR-alpha, stearoyl-CoA desaturase 2, 14-3-3 0, Ewing sarcoma homolog.). These results open new routes toward cell regeneration after kidney injury.


Asunto(s)
Riñón/lesiones , Riñón/metabolismo , Trasplante de Células Madre Mesenquimatosas , Células Madre Mesenquimatosas/metabolismo , Antígenos de Diferenciación/metabolismo , Diferenciación Celular , Femenino , Humanos , Técnicas In Vitro , Riñón/cirugía , Placenta , Embarazo , Estearoil-CoA Desaturasa/metabolismo
13.
G Ital Nefrol ; 26(4): 452-9, 2009.
Artículo en Italiano | MEDLINE | ID: mdl-19644834

RESUMEN

When possible, living donor transplantation represents the best therapeutic strategy for patients suffering from chronic renal failure. Studying the donor allows a complete and thorough clinical, laboratory and instrumental assessment that guarantees good organ function whilst protecting the health of the donor. The main parameters considered within this framework are age, renal function, nephrological complications, comorbidities (diabetes, hypertension, obesity, etc.), malignancies, and infection. Moreover, particular attention is paid to the sociopsychological aspects of the donation, particularly related to the donor, the recipient, and the entire family situation.


Asunto(s)
Estado de Salud , Trasplante de Riñón , Donadores Vivos , Humanos
14.
G Ital Nefrol ; 26 Suppl 46: 30-43, 2009.
Artículo en Italiano | MEDLINE | ID: mdl-19644816

RESUMEN

Cardiovascular disease is the leading cause of mortality and morbidity in renal transplant recipients as well as the leading cause of death with a functioning graft. The high cardiovascular risk is attributable to the prolonged exposure to multiple traditional and nontraditional risk factors in the pretransplant and posttransplant period. Particular attention must be paid to cardiovascular screening of candidates for kidney transplantation. After a transplant, treatment and prevention strategies should be focused on the modifiable risk factors including smoking, dietary habits, physical activity, weight control, hypertension, and dyslipidemia. Further studies on these factors are needed to better define the pharmacological approaches (hypotensive or hypolipemic drugs) and therapeutic targets. In view of the role of immunosuppressive therapy in the onset or worsening of several risk factors, it is important to tailor the treatment approach and dosage to the cardiovascular risk profile of the individual patient.


Asunto(s)
Enfermedades Cardiovasculares/etiología , Trasplante de Riñón/efectos adversos , Diabetes Mellitus/etiología , Progresión de la Enfermedad , Dislipidemias/etiología , Humanos , Hipertensión/etiología , Inflamación/etiología
15.
Clin Ter ; 170(4): e301-e320, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31304520

RESUMEN

BACKGROUND AND AIMS: Given the rising prevalence of end-stage renal disease and subsequent progressive increase of patients starting renal replacement therapy, a great attention is given by scientific community to the assessment of life perception and Quality of Life (QoL) in dialysis patients. A broad literature review was conducted on PubMed and PsyInfo databases for articles published between January 2000 and July 2016 in order to understand the biological and psychosocial variables potentially affecting the QoL of the patients under artificial substitution of kidney function. METHODS: Five domains related to the concepts of physical functions, mood, sleep, spirituality, and social support have been identified. RESULTS: The findings in this review suggest that the variables related to physical activity and depression seem to have a direct impact on QoL and Health-Related Quality of Life (HRQoL). Others, such as anxiety, awareness, empowerment, the presence of sleep disorders, satisfaction, support from the staff, social support, spirituality and religion have a clear correlation with the QoL dimensions. CONCLUSIONS: These results suggest the primary importance of the assessment biological and psychosocial variables by specific tools and the inclusion of effective interventions targeted to patients and their caregivers.


Asunto(s)
Fallo Renal Crónico/psicología , Calidad de Vida , Depresión/psicología , Humanos , Fallo Renal Crónico/terapia , Calidad de Vida/psicología , Religión , Apoyo Social
16.
G Ital Nefrol ; 25 Suppl 44: S48-S52, 2008.
Artículo en Italiano | MEDLINE | ID: mdl-19048586

RESUMEN

Renal transplantation is the treatment of choice for patients with end-stage renal disease. In recent years a major improvement has been observed in short-term graft survival, but there has been no corresponding improvement in long-term survival. Chronic allograft dysfunction (CAD) is an anatomical and clinical alteration that can lead to the loss of the transplanted organ without any specific cause. The pathogenesis of CAD, which still remains to be fully clarified, involves both immunological factors (acute rejection, subclincial rejection, HLA mismatches between donor and recipient, noncompliance, etc) and non-immunological factors (marginal donor ischemia/reperfusion injury, infection, cardiovascular risk factors, nephrotoxicity, etc). Immunosuppressive therapy represents one of the strategies for the prevention of CAD. The introduction into clinical practice of novel immunosuppressive agents with no or lower nephrotoxicity, like mycophenolate mofetile, rapamycin and everolimus, will make therapeutic strategies aimed at decreasing the incidence of CAD feasible.


Asunto(s)
Rechazo de Injerto/prevención & control , Inmunosupresores/uso terapéutico , Enfermedades Renales/prevención & control , Trasplante de Riñón/efectos adversos , Ácido Micofenólico/análogos & derivados , Sirolimus/análogos & derivados , Sirolimus/uso terapéutico , Enfermedad Crónica , Everolimus , Humanos , Inmunosupresores/efectos adversos , Enfermedades Renales/etiología , Fallo Renal Crónico/terapia , Trasplante de Riñón/mortalidad , Ácido Micofenólico/efectos adversos , Ácido Micofenólico/uso terapéutico , Factores de Riesgo , Sirolimus/efectos adversos , Análisis de Supervivencia , Trasplante Homólogo , Resultado del Tratamiento
17.
Eur Rev Med Pharmacol Sci ; 22(8): 2266-2272, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29762828

RESUMEN

OBJECTIVE: The aim of this retrospective study was to investigate the relationship between cancer, non-immunologic comorbidity, estimated by International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codification, gender and in-hospital mortality (IHM) in a large sample of renal transplant recipients (RTRs) living in the region Emilia-Romagna (RER) of Italy. PATIENTS AND METHODS: We evaluated IHM in RTRs admitted between 2000 and 2013 recorded in the RER database. By using ICD-9-CM codes, the Elixhauser index (EI) was calculated, and cancers were identified and classified as skin cancers (SC), solid organ cancers (SOC) and post-transplant lymphoproliferative disorders (PTLD). IHM was the dependent variable of the multivariate models, while age, gender, EI corrected removing the effect of malignancies (cEI), and different types of cancer were the independent ones. RESULTS: During the examined period, a total of 9,063 admissions in 3,648 RTRs were recorded, of whom 117 died (3.2%). The mean age was 52.9±13.1 years. Cancers were reported in 580 admissions (6.4%), and mean cEI was 3.5±3.4. Deceased RTRs were older, had a higher prevalence of PTLD and SOC, and had a higher cEI than survivors. IHM was independently associated with (in decreasing order) PTLD (OR 12.431, 95%CI 5.834-26.489, p<0.001), SOC (OR 6.804, 95%CI 4.323-10.707, p<0.001), female gender (OR 1.633, 95%CI 1.057-2.523, p=0.006), cEI (OR 1.106, 95%CI 1.068-1.145, p<0.001), and age (OR 1.049, 95%CI 1.031-1.068, p<0.001) CONCLUSIONS: Cancer, in particular SOC and PTLD, is strongly associated with IHM in RTRs. On the other hand, rather surprisingly, female gender exhibited a stronger association with IHM than other more expected factors, such as comorbidity and age.


Asunto(s)
Mortalidad Hospitalaria/tendencias , Trasplante de Riñón/mortalidad , Trasplante de Riñón/estadística & datos numéricos , Factores de Edad , Comorbilidad , Bases de Datos Factuales , Femenino , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Neoplasias/epidemiología , Estudios Retrospectivos , Factores Sexuales
18.
Int J Artif Organs ; 30(10): 864-78, 2007 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-17992647

RESUMEN

PURPOSE: Beta2-microglobulin amyloidosis (Abeta(2)M) is one of the main long-term complications of dialysis treatment. The incidence and the onset of Abeta(2)M has been related to membrane composition and/or dialysis technique, with non-homogeneous results. This study was carried out to detect: i) the incidence of bone cysts and CTS from Abeta(2)M; ii) the difference in Abeta(2)M onset between cellulosic and synthetic membranes; iii) other risk factors besides the membrane. METHODS: 480 HD patients were selected between 1986 to 2005 and grouped according to the 4 types of membranes used (cellulose, synthetically modified cellulose, synthetic low-flux, synthetic high-flux). The patients were analyzed before and after 1995, when the reverse osmosis treatment for dialysis water was started at our center, and the incidence of Abeta(2)M was compared between the two periods. Routine plain radiography, computer tomography (CT) and nuclear magnetic resonance imaging (MRI) as well as electromyography were used to investigate the clinical symptoms. RESULTS: Bone cysts occurred in 29.2% of patients before 1995 vs. 12.2% after 1995 (p<0.0001). CTS occurred in 24% of patients before 1995 vs. 7.1% after 1995 (p<0.0001). Bone cysts and CTS occurred in older patients, who began dialysis at a late age, with high CRP, low albumin, low residual GFR, and low Hb. Cox regression analysis showed that the risk factor for bone cysts was high CRP (RR 1.3, p<0.01), while albumin (RR 0.14, p<0.0001) and residual GFR (RR 0.81, p<0.0001) were revealed to be protective factors. Cox analysis for CTS confirmed CRP as a risk factor (RR 1.2, p<0.01), and albumin (RR 0.59, p<0.0001) and residual GFR (RR 0.75, p<0.0001) as protective factors. The comparison obtained between membranes did not suggest any protective effect on Abeta(2)M. CONCLUSIONS: The findings that the inflammatory status as well as low albumin and the residual GFR of the uremic patient are predictive of Abeta(2)M lesions suggests that Abeta(2)M has a multifactorial origin rather than being solely a membrane- or technique-related side effect.


Asunto(s)
Amiloidosis/etiología , Quistes Óseos/etiología , Síndrome del Túnel Carpiano/etiología , Diálisis Renal/efectos adversos , Microglobulina beta-2/sangre , Anciano , Albúminas/fisiología , Quistes Óseos/diagnóstico por imagen , Quistes Óseos/epidemiología , Proteína C-Reactiva/fisiología , Síndrome del Túnel Carpiano/epidemiología , Celulosa/uso terapéutico , Estudios Transversales , Femenino , Humanos , Incidencia , Fallo Renal Crónico/terapia , Masculino , Membranas Artificiales , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Radiografía , Diálisis Renal/métodos , Estudios Retrospectivos , Factores de Riesgo , Purificación del Agua/métodos , Microglobulina beta-2/efectos adversos
19.
G Ital Nefrol ; 24 Suppl 38: 44-8, 2007.
Artículo en Italiano | MEDLINE | ID: mdl-17922447

RESUMEN

INTRODUCTION: Renal allograft loss in the long term may be due to the death of a patient with a functioning graft or to chronic allograft nephropathy. One of the most important factors in the development of chronic allograft nephropathy is drug nephrotoxicity. The term nephrotoxicity comprises two distinct forms of renal injury: acute and chronic. Immunosuppressive drugs, and in particular calcineurin inhibitors, have a variety of side effects including nephrotoxicity. The nephrotoxicity associated with calcineurin inhibitors is well known; this association has also been described for the newer agents. METHODS: We reviewed a large number of recent studies that attempted to reduce the toxicity of immunosuppressive regimens. RESULTS: A number of low-toxicity protocols have been developed. Encouraging results have been obtained with regimens that reduce or eliminate nephrotoxicity-inducing calcineurin inhibitors and with regimens that reduce or eliminate steroids, which are responsible for many diseases that may lead to the death of the patient, even with a functioning graft. CONCLUSION: All immunosuppressive drugs may be nephrotoxic, even if they act through different mechanisms. Combining different drugs at low dosage would therefore seem the best solution. It is not yet clear which regimens will be the most effective from the point of view of maximizing patient and graft survival, minimizing rejection, and minimizing adverse events.


Asunto(s)
Rechazo de Injerto/prevención & control , Terapia de Inmunosupresión/métodos , Inmunosupresores/administración & dosificación , Inmunosupresores/efectos adversos , Trasplante de Riñón/métodos , Animales , Inhibidores de la Calcineurina , Ciclosporina/uso terapéutico , Relación Dosis-Respuesta a Droga , Medicina Basada en la Evidencia , Humanos , Terapia de Inmunosupresión/efectos adversos , Trasplante Homólogo , Resultado del Tratamiento
20.
Eur Rev Med Pharmacol Sci ; 21(20): 4654-4660, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29131248

RESUMEN

OBJECTIVE: Kidney transplant recipients (KTRs) are bound to develop cardiovascular disease (CVD), and obesity represents a well-known risk factor for CVD. It has been reported that the metabolic syndrome (MetS) is a frequent finding in KTRs, and MetS could develop even if body mass index (BMI) is only mildly increased. We compared the impact of BMI and MetS on the development of major clinical events (MCEs) in a cohort of 107 KTRs during a follow-up of 63 ± 31 months. PATIENTS AND METHODS: Clinical characteristics were recorded at the time of enrollment and patients were classified on the basis of MCEs development. In a Cox model, MCEs were the dependent variable while age, sex, history of CVD, glomerular filtration rate, length of dialysis pre-transplantation, BMI classes and diagnosis of MetS were independent variables. Patients were classified into 3 groups: normal (BMI < 25 kg/m2), overweight (BMI of 25 to 30 kg/m2) and obese (BMI > 30 kg/m2). RESULTS: During follow-up, 55 MCEs were recorded: 16 patients died (15%), 19 (18%) had major cardiovascular events (CVEs), and 20 (19%) started dialysis due to graft failure. KTRs who had MCEs (n = 42) were older, had a lower renal function, longer dialysis vintage pre-transplantation, higher prevalence of history of CVD and higher BMI than those without MCEs. Cox regression analysis showed that length of dialysis pre-transplantation, renal function, previous CVD, and BMI classes (overweight and obesity) were related to MCEs. CONCLUSIONS: BMI, but not MetS, predicted MCEs in KTRs as well as non-traditional CVD risk factors such as length of dialysis pre-transplantation and graft function. Thus, a simple evaluation during clinic visits could identify KTRs at high risk for MCEs.


Asunto(s)
Trasplante de Riñón , Síndrome Metabólico/diagnóstico , Adulto , Anciano , Índice de Masa Corporal , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/etiología , Enfermedades Cardiovasculares/mortalidad , Causas de Muerte , Femenino , Rechazo de Injerto/diagnóstico , Rechazo de Injerto/mortalidad , Humanos , Masculino , Síndrome Metabólico/complicaciones , Síndrome Metabólico/patología , Persona de Mediana Edad , Obesidad/complicaciones , Modelos de Riesgos Proporcionales , Factores de Riesgo , Análisis de Supervivencia
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