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Luiza Martins
  • Brazil

Luiza Martins

Bom hoje irei falar um pouco sobre esse idioma que tem feito a diferença no mundo todo. O inglês hoje se tornou a linguá do mundo, o idioma de negociantes externos, o idioma que se vê em todo lugar. O inglês é exencial para qualquer país,... more
Bom hoje irei falar um pouco sobre esse idioma que tem feito a diferença no mundo todo. O inglês hoje se tornou a linguá do mundo, o idioma de negociantes externos, o idioma que se vê em todo lugar. O inglês é exencial para qualquer país, linguá que abre portas para muitas coisas, até para empregos hoje em dia eles já levam o inglês como pré requisito, ou até fundamental para exercer a função, muitos cargos só são alcançados por ter fluência nesse idioma. Pesquisas indicam que você ter o segundo idioma no seu curriculum aumentam sua faixa salarial em até 30%, em relação com aqueles que só conhecem apenas o português. Nesses dias de hoje convivemos com muitas palavras, que as vezes você nem percebe mais vem de lá como : download, big, hot dog, hamburguer, fitness, e-mail entre outras. Devido a globalização, muitos brasileiros tem viajado para fora do país com o intuito de estudar, passar férias ou a negocios. Da mesma forma os de fora vem para o brasil com o mesmo intuito. E me diga qual linguá eles vão se comunicar aqui, concerteza o Inglês. Através de tudo isso muitas escolas tem visto essas oportunidades e criado cursos para que facilite a sua fluência no inglês, aulas online são concerteza a melhor opção, pois você estuda na hora que quiser e ainda tem a opção de voltar ouvir a aula de novo e até compartilhar conteúdo. Eu recomendo pois sei que não é perca de tempo, estude nas horas vagas e aumente suas pretensões salariais.
Research Interests:
Bone disease and an high risk of fractures are major problems in transplantation. Among diabetic patients undergoing simultaneous kidney-pancreas (SKP) transplantation, there are few studies assessing long-term effects on bone mass. The... more
Bone disease and an high risk of fractures are major problems in transplantation. Among diabetic patients undergoing simultaneous kidney-pancreas (SKP) transplantation, there are few studies assessing long-term effects on bone mass. The aim of this study was to evaluate bone mineral density (BMD) over 4 years follow-up after SKP transplantation. Fifty-seven patients had 22.8 +/- 5.3 years of prior diabetes, 65% were female, and the overall mean age was 24.3 +/- 5.93 years. At the time of transplantation, the lumbar spine and femoral neck T-scores were -1.75 +/- 1.05 and -1.95 +/- 0.73, respectively; 28% of subjects had evidence of osteoporosis. One year after transplantation, 77.6% of patients displayed improved lumbar T-scores to -1.33 +/- 0.94 (P = .044) with stable femoral neck T-scores. Bone densitometry enhanced gradually through the 4 years follow-up: lumbar T-score to -1.04 +/- 0.67 (P = .004) and femoral neck T-score to -1.69 +/- 0.49 (P = .12). At year 4, no osteoporosis ca...
Over 9 years, we have performed 93 simultaneous pancreas-kidney transplants (SPKT). The morbidity of this procedure is high compared with kidney transplantation alone; readmissions are frequent and costs are higher. Herein we have... more
Over 9 years, we have performed 93 simultaneous pancreas-kidney transplants (SPKT). The morbidity of this procedure is high compared with kidney transplantation alone; readmissions are frequent and costs are higher. Herein we have presented the complications during follow-up of these 93 patients. Their mean age was 34 +/- 6 years and prior dialysis time was 32 +/- 25 months. The median hospital stay on the first admission for the transplant procedure was 22 days, including 2 days in the intensive care unit. Bleeding, thrombosis, and infection were the most frequent reasons for prolonged hospitalization. Thirty patients underwent >or=1 surgical reinterventions. Incidence of acute rejection episodes was 11.8%. After discharge, 74.2% of the patients had 197 readmission episodes with infection being the main cause, urinary tract infections, the most frequent; however, systemic viral and fungal infections required the longest readmission periods. The need for surgical interventions, g...
The recurrence or persistence of pancreatic autoantibodies after pancreas-kidney transplantation (PKT) is an intriguing finding. We prospectively analyzed 77 PKTs, searching for risk factors for the expression of these autoimmune markers... more
The recurrence or persistence of pancreatic autoantibodies after pancreas-kidney transplantation (PKT) is an intriguing finding. We prospectively analyzed 77 PKTs, searching for risk factors for the expression of these autoimmune markers and their impact on pancreas graft function. Among the 77 PKTs, 24.7% had 0 HLA matches, 20.8% displayed delayed graft function, and 14.3% had acute rejection episodes. Immunosuppression included antithymocyte globulin (ATG), tacrolimus, mycophenolate mofetil (MMF), and steroids. Sixty-five patients had both grafts functioning as a follow-up of more than 6 months. In 11 patients anti-glutamic acid decarboxylase (GAD) positivity persists (n = 8) or has recurred (n = 3), 4 of whom show increasing titers. Two patients maintain positive islet cell antibodies (ICA) and anti-GAD antibodies. The 9 patients positive for ICA included 2 who were negative before PKT and 7 who remain positive. The "positive" group (22 patients with positive ICA and/or...
The impact of dialysis modality on posttransplant outcomes remains controversial. The authors have compared primary failure, delayed graft function (DGF), acute rejection episodes as well as patient and allograft survivals among patients... more
The impact of dialysis modality on posttransplant outcomes remains controversial. The authors have compared primary failure, delayed graft function (DGF), acute rejection episodes as well as patient and allograft survivals among patients undergoing renal transplantation between 2004 and 2009, according to the modality of hemodialysis (HD) versus peritoneal dialysis (PD). We studied 306 patients (268 HD and 38 PD) with a mean follow-up of 29 ± 16 months. The PD cohort included a predominance of females (68.4% vs 36.2%; P = .001), lower age at transplantation (38 ± 14 vs 46 ± 12 years; P = .004), shorter time on dialysis (33 ± 49 vs 59 ± 157 months; P = .043), and higher rate of living donor grafts (PD 31.6% vs HD 13.1%; P = .003). Donor age (PD 43 ± 13 vs HD 45 ± 14 years; P = .30), human leukocyte antigen mismatch (P = .17), panel reactive antibody values (HD 11 ± 22 vs PD 13 ± 26; P = .55), and hyperimmunized patients (HD 3.73%; PD 7.89%; P = .23) were not different. Primary graft failure (3.4% vs 0%; P = .025) and DGF (37.1% vs 13.1%; P = .037) were more frequent among HD patients, but incidences of acute rejection episodes were similar (HD 10.5% vs PD 5.3%; P = 0.19). Neither recipient survival at 1 (97% in PD and HD) or 3 years (HD 90% vs PD 94%; P = .657) nor allograft survival at 1 year (HD 94% vs PD 95%; P = .80) or 3 years: (HD 70%, vs PD 81%; P = .73) were different. Graft function was similar at 1 (HD 64.2 ± 25 vs PD 56.4 ± 24 mL/min; P = .17) and 3 years (HD 62.3 ± 21 vs PD 46 ± 23 mL/min; P = .16). In our study, HD patients showed an higher incidence of DGF and primary allograft failure, but there was no difference in acute rejection episodes, long-term survivals, or renal function.
We performed a retrospective study to examine the impact on long-term graft survival of first-year posttransplantation renal function, as evaluated by serum creatinine. We analyzed data from 1,273 adult kidney transplants performed... more
We performed a retrospective study to examine the impact on long-term graft survival of first-year posttransplantation renal function, as evaluated by serum creatinine. We analyzed data from 1,273 adult kidney transplants performed between 1983 and 2008. All recipients >18 years old were included if their grafts had survived beyond 1 year, excluding patients simultaneously transplanted with other organs. Cox proportional hazards multivariable analysis was used to examine the relationship between first-year posttransplantation renal function and death-censored graft loss, adjusted for other variables. Renal function in the first year was expressed as serum creatinine levels at 1, 6, and 12 months as well as the change in creatinine between those 3 periods. Posttransplantation 1-month serum creatinine levels and change between 1 and 6 months were independent predictors of long-term graft loss. Multivariable analysis also identified donor age (increasing), acute rejection episode occurrence, recipient age at transplantation (decreasing), and gender (female) as independently predictive of graft failure, adjusting for other factors usually associated with graft loss, namely, pretransplantation time on dialysis, HLA mismatches, and delayed graft function. The predictive effect of creatininemia was sustained at 6 and 12 months, after adjusting for these covariates. Posttransplantation serum creatinine levels at 1, 6, and 12 months were independent predictors of graft survival, suggesting that they could be considered as surrogate endpoints for long-term death-censored graft loss.
The chronic use of immunosuppressive drugs in renal transplant recipients increases the risk of developing de novo malignancies. Herein we analyze the incidence of de novo tumors and the potential role of sirolimus to improve... more
The chronic use of immunosuppressive drugs in renal transplant recipients increases the risk of developing de novo malignancies. Herein we analyze the incidence of de novo tumors and the potential role of sirolimus to improve cancer-specific survival among a cohort at a single center. This retrospective analysis of our 1,816 patients allografted between January 1983 and December 2009 sought subjects who developed de novo tumors. Epidemiological and clinical data were examined using Mann-Whitney and Pearson's chi-square or Fisher exact tests for statistical comparisons of continuous and categorical variables, respectively. Kaplan-Meier survival curves were used to determine cancer-specific survival according to type of neoplasia and immunosuppressive regimen, namely, conversion to sirolimus. One hundred patients (5.5%) were diagnosed with a de novo malignancy. The 110 different cancers were diagnosed at a median interval of 73 months after kidney transplantation. The overall cancer-specific survivals at 1 and 5 years after cancer diagnosis were 87.0% and 76.9%, respectively. The 15 patients converted to sirolimus showed no difference in survival. The observed frequencies of cancer in our center are consistent with the literature. Among our cohort, sirolimus did not significantly impact survival among subjects who had de novo malignancies.
Studies suggest that inflammation is involved in the neurodegenerative cascade of dementias. Immunological mechanisms may be part of the pathophysiological process in frontotemporal dementia (FTD), but up till now only vague evidence of... more
Studies suggest that inflammation is involved in the neurodegenerative cascade of dementias. Immunological mechanisms may be part of the pathophysiological process in frontotemporal dementia (FTD), but up till now only vague evidence of such mechanisms has been presented. The B7- CD28/CTLA-4 pathway is an important immunological signaling pathway involved in modulation of T cell activation. The aim of this study was to compare the expression of molecules associated with co-stimulatory signaling in peripheral blood mononuclear cells (PBMC) of FTD to Alzheimer disease (AD) and control groups. Our results confirm the previous demonstrated increased expression of CD80 in CD14+ Alzheimer patients T cells but show, for the first time, a reduction in the expression of CTLA-4 in CD4+ FTD cells. As CTLA-4 is the most potent negative regulators of T-cell activation we speculated that peripheral T lymphocytes in FTD are more activated and this could be involved in the neurodegeneration observed in this dementia.
We report the 5-year results of our simultaneous pancreas-kidney transplantation (SPKT) program, started on May 2, 2000. Forty-two SPKT were performed on 42 type I diabetic patients with chronic renal failure. The procedure was performed... more
We report the 5-year results of our simultaneous pancreas-kidney transplantation (SPKT) program, started on May 2, 2000. Forty-two SPKT were performed on 42 type I diabetic patients with chronic renal failure. The procedure was performed with enteric diversion and vascular anastomosis to the iliac vessels. Immunosuppressive protocol included antithymocyte globulin, tacrolimus, mycophenolate mofetil, and steroids. The 24 women and 18
Most women of childbearing age who receive a renal transplant have a return of normal menses and have the ability to become pregnant. Most studies indicate that pregnancy does not adversely affect the transplant... more
Most women of childbearing age who receive a renal transplant have a return of normal menses and have the ability to become pregnant. Most studies indicate that pregnancy does not adversely affect the transplant kidney's survival as long as renal function is good and serum creatinine is stable before pregnancy. The experience with immunosuppressive drugs has been surprisingly reassuring with no increase in congenital anomalies with cyclosporine, prednisone, and azathioprine. There is little experience with newer drugs. Pregnant transplant recipients need to be monitored for opportunistic infections, which may adversely affect the fetus, including herpes, toxoplasmosis, and CMV. Hypertension, urinary tract infections, and anemia are other common problems in pregnant transplant recipients. Despite a high frequency of premature births, over 80% of pregnancies result in surviving infants.