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1.
Int J Obes (Lond) ; 41(1): 23-29, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-27654143

RESUMEN

BACKGROUND/OBJECTIVE: Exposure to food advertisements may cue overeating among children, especially among those genetically predisposed to respond to food cues. We aimed to assess how television food advertisements affect eating in the absence of hunger among children in a randomized trial. We hypothesized that the fat mass and obesity-associated gene (FTO) rs9939609 single-nucleotide polymorphism would modify the effect of food advertisements. SUBJECTS/METHODS: In this randomized experiment, 200 children aged 9-10 years were served a standardized lunch and then shown a 34-min television show embedded with either food or toy advertisements. Children were provided with snack food to consume ad libitum while watching the show and we measured caloric intake. Children were genotyped for rs9939609 and analyses were conducted in the overall sample and stratified by genotype. A formal test for interaction of the food advertisement effect on consumption by rs9939609 was conducted. RESULTS: About 172 unrelated participants were included in this analysis. Children consumed on average 453 (s.d.=185) kcals during lunch and 482 (s.d.=274) kcals during the experimental exposure. Children who viewed food advertisements consumed an average of 48 kcals (95% confidence interval: 10, 85; P=0.01) more of a recently advertised food than those who viewed toy advertisements. There was a statistically significant interaction between genotype and food advertisement condition (P for interaction=0.02), where the difference in consumption of a recently advertised food related to food advertisement exposure increased linearly with each additional FTO risk allele, even after controlling for body mass index percentile. CONCLUSIONS: Food advertisement exposure was associated with greater caloric consumption of a recently advertised food, and this effect was modified by an FTO genotype. Future research is needed to understand the neurological mechanism underlying these associations.


Asunto(s)
Publicidad , Dioxigenasa FTO Dependiente de Alfa-Cetoglutarato/genética , Ingestión de Energía/genética , Alimentos , Genotipo , Hiperfagia/genética , Televisión , Alelos , Niño , Metabolismo Energético/genética , Femenino , Predisposición Genética a la Enfermedad , Humanos , Hambre , Hiperfagia/psicología , Masculino , Sobrepeso/genética , Obesidad Infantil/genética , Obesidad Infantil/psicología , Polimorfismo de Nucleótido Simple/genética , Medición de Riesgo , Saciedad , Estados Unidos
2.
Am J Transplant ; 13(9): 2462-6, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24034709

RESUMEN

In recent years different minimal access strategies have been designed in order to perform living donor liver surgery for adult recipients with less morbidity. Techniques involve shortening the length of the incision with or without previous laparoscopic mobilization of the liver. Herein we present two cases of totally laparoscopic living donor left hepatectomy, with and without removal of the middle hepatic vein, respectively. We describe in detail the anatomical and technical aspects of the procedure focusing on relevant points to enhance safety.


Asunto(s)
Hepatectomía/métodos , Laparoscopía/métodos , Trasplante de Hígado/métodos , Donadores Vivos , Adolescente , Adulto , Femenino , Humanos , Hígado/cirugía , Masculino , Persona de Mediana Edad , Vena Porta/cirugía , Recolección de Tejidos y Órganos
3.
Transpl Infect Dis ; 15(4): 400-4, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23647866

RESUMEN

BACKGROUND: We sought to assess the prevalence and risk factors for high-risk human papillomavirus (HPV) infection among female liver transplant (LT) candidates. Traditional health screening before LT listing has included Pap smear and is typically carried out by the patient's local provider. The prevalence of high-risk HPV in this population has not been studied. METHODS: With Institutional Review Board approval, 62 LT candidates received a liquid-based Pap smear with high-risk HPV testing as part of their pre-transplant evaluation by a single provider. Clinical variables included age, ethnicity, insurance status, prior Pap smear, and HPV results, HPV risk factors including age of first intercourse, number of lifetime partners, last sexual activity, smoking, birth control pill use, history of sexually transmitted infections, human immunodeficiency virus status, immunosuppressive medication, medical diagnoses, prescribed medications, and history of hepatitis A, B, C, or D. RESULTS: The 62 women had a median age of 56 years, and 39% had high-risk behavior known to be associated with HPV. Ten of 62 patients (16.1%) had high-risk HPV at baseline screening, 5 of whom had atypical cytology. All of the patients who were positive for high-risk HPV had an etiology of hepatitis C virus (HCV) as the underlying cause of liver disease, with the majority (90%) having no history of high-risk behavior for HPV. In contrast, all patients with high-risk behavior who were HCV negative were HPV negative. Fisher's exact test demonstrated a statistically significant relationship between HPV and HCV; odds ratio = 24.4, 95% confidence interval, 1.4, 438.7, P-value = 0.0013. None of the other potential risk factors were associated with HPV in this cohort. CONCLUSIONS: In this study, we provide evidence of a strong association between HCV and HPV in LT candidates, which has not been previously reported. HPV positivity was observed in non-sexually active women, suggesting a reactivation of dormant HPV. An association between hepatitis C and high-risk HPV could involve impairment of T-cell function by hepatitis C. These data support close surveillance in women's health screening for LT candidates. Further studies to characterize immune responses in these patients will be in order.


Asunto(s)
Hepatitis C/complicaciones , Hepatitis C/epidemiología , Trasplante de Hígado , Papillomaviridae , Infecciones por Papillomavirus/complicaciones , Infecciones por Papillomavirus/epidemiología , Adulto , Anciano , Femenino , Hepacivirus , Hepatitis C/virología , Humanos , Persona de Mediana Edad , Prueba de Papanicolaou , Infecciones por Papillomavirus/virología , Prevalencia , Factores de Riesgo , Frotis Vaginal
4.
Am J Transplant ; 12(9): 2477-86, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22594953

RESUMEN

Hypothermic machine perfusion (HMP) is in its infancy in clinical liver transplantation. Potential benefits include diminished preservation injury (PI) and improved graft function. Molecular data to date has been limited to extrapolation of animal studies. We analyzed liver tissue and serum collected during our Phase 1 trial of liver HMP. Grafts preserved with HMP were compared to static cold stored (SCS) transplant controls. Reverse transcription polymerase chain reaction (RT-PCR), immunohistochemistry and transmission electron microscopy (TEM) were performed on liver biopsies. Expression of inflammatory cytokines, adhesion molecules and chemokines, oxidation markers, apoptosis and acute phase proteins and the levels of CD68 positive macrophages in tissue sections were evaluated. RT-PCR of reperfusion biopsy samples in the SCS group showed high expression of inflammatory cytokines, adhesion molecules and chemokines, oxidative markers and acute phase proteins. This upregulation was significantly attenuated in livers that were preserved by HMP. Immunofluorescence showed larger numbers of CD68 positive macrophages in the SCS group when compared to the HMP group. TEM samples also revealed ultrastructural damage in the SCS group that was not seen in the HMP group. HMP significantly reduced proinflammatory cytokine expression, relieving the downstream activation of adhesion molecules and migration of leukocytes, including neutrophils and macrophages when compared to SCS controls.


Asunto(s)
Biomarcadores/metabolismo , Hipotermia Inducida , Trasplante de Hígado , Daño por Reperfusión/metabolismo , Adulto , Técnica del Anticuerpo Fluorescente , Humanos , Microscopía Electrónica de Transmisión , Persona de Mediana Edad , Estrés Oxidativo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa
5.
Am J Transplant ; 12(5): 1323-8, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22300017

RESUMEN

Abdominal tumors involving both roots of the celiac and superior mesenteric artery are deemed unresectable by conventional surgical methods. We performed three cases of multivisceral ex vivo surgery involving temporary removal of the entire abdominal viscera followed by vascular reconstruction, ex vivo tumor resection and autotransplantation of excised organs. We achieved a complete tumor resection with negative margins in all cases. All patients have survived with no tumor recurrence to date at 17-, 27- and 38-month follow-up. Postoperative complications included diarrhea, sphincter of Oddi dysfunction and arterial stenosis; all responded to directed treatments. Multivisceral ex vivo surgery applying techniques of deceased donor multivisceral transplantation is feasible in achieving local control of otherwise unresectable abdominal tumors. This surgery is best suitable for locally invasive tumors unresectable because of location and vascular involvement.


Asunto(s)
Neoplasias Abdominales/cirugía , Arteria Celíaca/cirugía , Arteria Mesentérica Superior/cirugía , Neoplasias Pancreáticas/cirugía , Vísceras/cirugía , Neoplasias Abdominales/patología , Arteria Celíaca/patología , Niño , Femenino , Humanos , Arteria Mesentérica Superior/patología , Persona de Mediana Edad , Neoplasias Pancreáticas/patología , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Vísceras/patología
6.
Am J Transplant ; 9(3): 586-91, 2009 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-19191773

RESUMEN

Although living donor liver transplantation (LDLT) has been shown to decrease waiting-list mortality, little is known of its financial impact relative to deceased donor liver transplantation (DDLT). We performed a retrospective cohort study of the comprehensive resource utilization, using financial charges as a surrogate measure-from the pretransplant through the posttransplant periods-of 489 adult liver transplants (LDLT n = 86; DDLT n = 403) between January 1, 2000, through December 31, 2006, at a single center with substantial experience in LDLT. Baseline characteristics differed between LDLT versus DDLT with regards to age at transplantation (p = 0.02), male gender (p < 0.01), percentage Caucasians (p < 0.01) and transplant model for end-stage liver disease (MELD) score (p < 0.01). In univariate analysis, there was a trend toward decreased total transplant charges with LDLT (p = 0.06), despite increased surgical charges associated with LDLT (p < 0.01). After adjustment for the covariates that were associated with financial charges, there was no significant difference in total transplant charges (p = 0.82). MELD score at transplant was the strongest driver of resource utilization. We conclude that at an experienced transplant center, LDLT imposes a similar overall financial burden than DDLT, despite the increased complexity of living donor surgery and the addition of the costs of the living donor. We speculate that LDLT optimizes transplantation by transplanting healthier and younger recipients.


Asunto(s)
Hospitales/estadística & datos numéricos , Trasplante de Hígado/estadística & datos numéricos , Donantes de Tejidos/estadística & datos numéricos , Cadáver , Femenino , Humanos , Pacientes Internos , Trasplante de Hígado/clasificación , Trasplante de Hígado/economía , Masculino , Persona de Mediana Edad , Resultado del Tratamiento
7.
Am J Transplant ; 9(2): 301-8, 2009 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19120082

RESUMEN

Living donor liver transplantation (LDLT) may have better immunological outcomes compared to deceased donor liver transplantation (DDLT). The aim of this study was to analyze the incidence of acute cellular rejection (ACR) after LDLT and DDLT. Data from the adult-to-adult living donor liver transplantation (A2ALL) retrospective cohort study on 593 liver transplants done between May 1998 and March 2004 were studied (380 LDLT; 213 DDLT). Median LDLT and DDLT follow-up was 778 and 713 days, respectively. Rates of clinically treated and biopsy-proven ACR were compared. There were 174 (46%) LDLT and 80 (38%) DDLT recipients with >/=1 clinically treated episodes of ACR, whereas 103 (27%) LDLT and 58 (27%) DDLT recipients had >/=1 biopsy-proven ACR episode. A higher proportion of LDLT recipients had clinically treated ACR (p = 0.052), but this difference was largely attributable to one center. There were similar proportions of biopsy-proven rejection (p = 0.97) and graft loss due to rejection (p = 0.16). Longer cold ischemia time was associated with a higher rate of ACR in both groups despite much shorter median cold ischemia time in LDLT. These data do not show an immunological advantage for LDLT, and therefore do not support the application of unique posttransplant immunosuppression protocols for LDLT recipients.


Asunto(s)
Selección de Donante , Rechazo de Injerto/epidemiología , Trasplante de Hígado/métodos , Donadores Vivos , Donantes de Tejidos , Enfermedad Aguda , Estudios de Cohortes , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
8.
J Fr Ophtalmol ; 29(2): 181-3, 2006 Feb.
Artículo en Francés | MEDLINE | ID: mdl-16523161

RESUMEN

INTRODUCTION: Enterococcal faecalis endophthalmitis is an acute type of endophthalmitis that is exceptional because it is rare, can be recurrent, and has a poor functional prognosis. OBSERVATION: We report a case of recurrent Enterococcus faecalis endophthalmitis after cataract surgery on a 76-year-old woman. After four acute infectious episodes over a few months, this patient recovered without ablation of the IOL. After the classic intravitreous and general antibiotic injections, the treatment required posterior vitrectomy with posterior capsulorrhexis. Only this surgery enabled the cleansing of the vitreous cavity by removing the germs present in the intravitreous abscesses. Despite the responsible germ's virulence, the visual recovery at 7/10 P2 remained stable 2 years after these recurrent infectious episodes. DISCUSSION: As far as we know, this is the only published case of Enterococcus faecalis endophthalmitis that was cured without ablation of the IOL. A review of the literature shows the rarity of acute Enterococcus faecalis endophthalmitis, characterized by recurrences and a poor visual prognosis. The microbiologic and therapeutic particularities of Enterococcus faecalis endophthalmitis are discussed with the objective of elaborating a therapeutic protocol combining antibiotic therapy, corticotherapy, vitrectomy, and posterior capsulorrhexis while leaving the IOL in place. CONCLUSION: Enterococcus faecalis endophthalmitis is an ophthalmologic emergency, which requires not only a rapid intervention, but also close follow-up to detect recurrences early and perform vitrectomy and posterior capsulorrhexis with as little delay as possible.


Asunto(s)
Extracción de Catarata/efectos adversos , Endoftalmitis/microbiología , Enterococcus faecalis , Infecciones por Bacterias Grampositivas , Enfermedad Aguda , Anciano , Endoftalmitis/terapia , Femenino , Infecciones por Bacterias Grampositivas/terapia , Humanos , Recurrencia , Inducción de Remisión
9.
Am J Transplant ; 5(12): 2974-81, 2005 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-16303013

RESUMEN

Living donor liver transplantation evolved in response to donor shortage. Current guidelines recommend potential living donors (LD) have a body mass index (BMI) <30. With the current obesity epidemic, locating nonobese LD is difficult. From September 1999 to August 2003, 68 LD with normal liver function test (LFTs) and without significant comorbidities underwent donor hepatectomy at our center. Post-operative complications were collected, including wound infection, pneumonia, hernia, fever, ileus, biliary leak, biliary stricture, thrombosis, bleeding, hepatic dysfunction, thrombocytopenia, deep venous thrombosis, pulmonary embolism, difficult to control pain, depression and anxiety. Complication rates for LD with BMI >30 (n = 16) and BMI <30 (n = 52) were compared. The incidence of wound infection increased with BMI, 4% for nonobese and 25% for obese LD (p = 0.024). There were no statistically significant differences for all other complications. No LD died. Recipient survival was 100% with obese LD and 80% with nonobese LD (p = 0.1). Select donors with a BMI >30 may undergo donor hepatectomy with acceptable morbidity and excellent recipient results. Updating current guidelines to include select LD with BMI >30 has the potential to safely increase the donor pool.


Asunto(s)
Trasplante de Hígado , Donadores Vivos/provisión & distribución , Obesidad/epidemiología , Obtención de Tejidos y Órganos/normas , Adolescente , Adulto , Biopsia , Índice de Masa Corporal , Femenino , Hepatectomía/estadística & datos numéricos , Humanos , Hígado/patología , Pruebas de Función Hepática , Donadores Vivos/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos , Obtención de Tejidos y Órganos/estadística & datos numéricos
10.
J Fr Ophtalmol ; 26(3): 255-8, 2003 Mar.
Artículo en Francés | MEDLINE | ID: mdl-12746601

RESUMEN

PURPOSE: To evaluate anterior chamber (AC) bacterial contamination at the end of cataract surgery in a large series of patients, to determine the influence of operative technique on ocular contamination. METHODS: Retrospective study of 2,624 patients undergoing cataract extraction, 354 extracapsular cataract extraction (ECCE) and 2,270 phacoemulsification. Anterior chamber aspirates were performed on completion of surgery for microbiological studies. RESULTS: One hundred and thirty two patients (5%) had culture-positive anterior chamber aspirates. Coagulase-negative Staphylococcus, Propionibacterium sp. and Corynebacterium sp. were the most commonly isolated organisms. The AC contamination rates during ECCE (5.6%) and phacoemulsification (4.7%) were not statistically different. There was a statistically significantly higher risk of AC contamination in eyes receiving an intraocular lens (IOL) with polypropylene haptics (9.9%) than in eyes receiving the same IOL with polymethylmethacrylate haptics (4.4%). CONCLUSION: Surgical technique had no statistically significant effect on ocular contamination. Polypropylene haptics IOLs were associated with a higher risk of bacterial contamination.


Asunto(s)
Extracción de Catarata/estadística & datos numéricos , Infecciones Bacterianas del Ojo/epidemiología , Complicaciones Posoperatorias/microbiología , Materiales Biocompatibles , Extracción de Catarata/efectos adversos , Extracción de Catarata/métodos , Francia/epidemiología , Infecciones por Bacterias Gramnegativas/epidemiología , Infecciones por Bacterias Grampositivas/epidemiología , Humanos , Incidencia , Implantación de Lentes Intraoculares/métodos , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos
11.
Can J Urol ; 8(2): 1234-6, 2001 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-11375787

RESUMEN

Our patient had neglected a growing left testicular mass over a 5-year period. Due to the large size of the tumor a scrotal delivery was necessary. Pathology showed a 1.6 kg pure classic seminoma. Metastatic work up revealed stage IIC disease and he was treated with primary cisplatin-based chemotherapy and remains free of recurrence after 24 months. The potential risk of scrotal violation is discussed.


Asunto(s)
Orquiectomía/métodos , Seminoma/cirugía , Neoplasias Testiculares/cirugía , Adulto , Humanos , Masculino , Escroto , Seminoma/patología , Neoplasias Testiculares/patología
12.
Annu Rev Med ; 52: 147-60, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11160772

RESUMEN

Liver transplantation from living related donors was unthinkable until recently, when the safety of modern hepatic surgery became widely appreciated. The first step was the successful demonstration that parts of livers could be transplanted. This technique, termed reduced-size liver transplantation, evolved into reliable procedures to allow parents to donate small parts of their livers to small children. More recently, right hepatectomy, in which up to 70% of the liver is resected for donation, has been performed in adults. As the demand for liver transplantation continues to increase, the development of ethically sound, medically and surgically optimal programs for routine use of living donors has become essential. This chapter provides a broad overview of the evolution and current state of liver transplantation with living donors.


Asunto(s)
Trasplante de Hígado/métodos , Donadores Vivos , Obtención de Tejidos y Órganos/métodos , Adulto , Factores de Edad , Constitución Corporal , Niño , Ética Médica , Supervivencia de Injerto , Hepatectomía , Humanos , Trasplante de Hígado/efectos adversos , Trasplante de Hígado/mortalidad , Trasplante de Hígado/tendencias , Evaluación de Necesidades , Tamaño de los Órganos , Padres , Selección de Paciente , Análisis de Supervivencia , Obtención de Tejidos y Órganos/tendencias
13.
Mutat Res ; 473(1): 85-99, 2001 Jan 25.
Artículo en Inglés | MEDLINE | ID: mdl-11166028

RESUMEN

While some epidemiological risk factors for breast cancer have been identified, the environmental factors responsible for transformation of mammary epithelial cells are not clear. We have exposed the spontaneously immortalized human mammary epithelial cell line MCF-10A to benzo[a]pyrene and selected transformed clones based on a loss of contact inhibition and anchorage-dependent growth. Cytogenetic studies showed that each of the transformed sublines possess an isochromosome 8q aberration. The c-Myc proto-oncogene, which is positioned at 8q24, was analyzed for changes in expression. Both c-Myc mRNA and protein levels were increased in the transformed clones relative to the parental cells. The transformed clones were not able to grow as tumors in vivo when injected into nude or SCID mice. To determine whether the involvement of chromosome 8 in BP-induced mutagenesis was a reproducible event, transformed clones were selected from three additional independently treated sets of BP-exposed MCF-10A cultures and analyzed by spectral karyotyping (SKY). These transformed sublines also harbored the isochromosome 8q abnormality. Data from this model show that benzo[a]pyrene, a ubiquitous procarcinogen, can induce selectable morphologic changes in a human mammary epithelial cell line, and that these transformed cells possess chromosomal aberrations frequently found in human breast tumors.


Asunto(s)
Benzo(a)pireno/efectos adversos , Mama/patología , Transformación Celular Neoplásica/genética , Cromosomas Humanos Par 8/efectos de los fármacos , Células Epiteliales/efectos de los fármacos , Animales , Mama/efectos de los fármacos , Pruebas de Carcinogenicidad , Línea Celular , Línea Celular Transformada/efectos de los fármacos , Transformación Celular Neoplásica/efectos de los fármacos , Aberraciones Cromosómicas/genética , Cromosomas Humanos Par 8/genética , Células Clonales , Análisis Citogenético , Análisis Mutacional de ADN , Células Epiteliales/metabolismo , Células Epiteliales/patología , Femenino , Genes myc/genética , Humanos , Ratones , Proto-Oncogenes Mas , ARN Mensajero/metabolismo
14.
Ann Surg ; 232(5): 658-64, 2000 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11066137

RESUMEN

OBJECTIVE: To evaluate intrahepatic vascular and biliary anatomy of the left lateral segment (LLS) as applied to living-donor and split-liver transplantation. SUMMARY BACKGROUND DATA: Living-donor and split-liver transplantation are innovative surgical techniques that have expanded the donor pool. Fundamental to the application of these techniques is an understanding of intrahepatic vascular and biliary anatomy. METHODS: Pathologic data obtained from cadaveric liver corrosion casts and liver dissections were clinically correlated with the anatomical findings obtained during split-liver, living-donor, and reduced-liver transplants. RESULTS: The anatomical relation of the left bile duct system with respect to the left portal venous system was constant, with the left bile duct superior to the extrahepatic transverse portion of the left portal vein. Four specific patterns of left biliary anatomy and three patterns of left hepatic venous drainage were identified and described. CONCLUSIONS: Although highly variable, the biliary and hepatic venous anatomy of the LLS can be broadly categorized into distinct patterns. The identification of the LLS duct origin lateral to the umbilical fissure in segment 4 in 50% of cast specimens is significant in the performance of split-liver and living-donor transplantation, because dissection of the graft pedicle at the level of the round ligament will result in separate ducts from segments 2 and 3 in most patients, with the further possibility of an anterior segment 4 duct. A connective tissue bile duct plate, which can be clinically identified, is described to guide dissection of the segment 2 and 3 biliary radicles.


Asunto(s)
Sistema Biliar/anatomía & histología , Trasplante de Hígado/métodos , Hígado/irrigación sanguínea , Donadores Vivos , Adolescente , Cadáver , Niño , Preescolar , Femenino , Venas Hepáticas/anatomía & histología , Humanos , Lactante , Recién Nacido , Masculino , Vena Porta/anatomía & histología , Estudios Retrospectivos
15.
Med Pediatr Oncol ; 34(2): 132-5, 2000 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-10657875

RESUMEN

BACKGROUND: Children with malignant liver tumors often present with unresectable disease but need not be considered incurable. The advent of effective chemotherapy makes aggressive management feasible, as our experience with three such patients demonstrates. Procedure and Results One child with an unresectable undifferentiated sarcoma of the liver and two others with unresectable primary hepatoblastoma and lung metastases were treated with initial chemotherapy, followed by aggressive surgical management. Treatment with chemotherapy followed by hepatectomy and liver transplantation (cadaveric or live donor) in two children has resulted in disease-free survivals of 79 and 38 months. The third patient is alive and well 24 months following chemotherapy and aggressive resection of the primary and 12 metastatic lesions. CONCLUSIONS: Initial chemotherapy for unresectable liver tumors with or without metastases is supported by the review of the literature. Consideration of orthotopic liver transplantation (OLT) from cadaveric or living related donor is warranted when the malignancy is demonstrably chemosensitive, independent of initial staging. Aggressive resection of primary and metastatic disease may be called for in selected cases.


Asunto(s)
Neoplasias Hepáticas/terapia , Niño , Preescolar , Terapia Combinada , Femenino , Humanos , Lactante , Neoplasias Hepáticas/patología , Masculino
16.
Minerva Chir ; 55(11): 759-69, 2000 Nov.
Artículo en Italiano | MEDLINE | ID: mdl-11265149

RESUMEN

Living relative liver transplantation is a valid alternative to cadaver transplantation especially at a time when the availability of organs cannot meet the requests of long waiting lists. This procedure was initially introduced in response to the shortage of organs for pediatric cases, but the rapid growth of demand for liver transplantation has led to its extension to the adult population. The procedure raises a number of ethical, logistic and technical questions. The ethical aspect has been widely debated and in order to be acceptable, the procedure must comply with three critical points: the need for innovation, an acceptable risk-benefit ratio and adequate informed consent. The technical aspect is essential for the success of the procedure. It calls for an extensive experience and know-how of hepatobiliary surgery on one hand, and the use of high-resolution vision on the other, an aspect which is crucial for the success of vascular anastomoses. The indications for living relative transplantation are the same as for standard transplants. The sole exception is for adult patients with 2A status who present advanced hepatic imbalance caused by chronic liver disease, thereby reducing the probability of success, above all because a living donor graft is always smaller compared to the ideal dimensions for the recipient. In view of the severe shortage of organs, living relative transplantation is an important alternative for both pediatric and adult patients. The challenge over the coming decades will be to extend living relative transplantation to a growing number of patients, without jeopardizing the health of the donor.


Asunto(s)
Familia , Trasplante de Hígado , Donadores Vivos , Selección de Paciente , Adulto , Factores de Edad , Algoritmos , Niño , Ética Médica , Humanos , Consentimiento Informado , Regeneración Hepática , Trasplante de Hígado/métodos , Trasplante de Hígado/estadística & datos numéricos , Medición de Riesgo
17.
Eur J Pediatr ; 158 Suppl 2: S43-8, 1999 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-10603098

RESUMEN

UNLABELLED: Glycogen storage disease (GSD) types I, III, and IV can be associated with severe liver disease. The possible development of hepatocellular carcinoma and/or hepatic failure make these GSDs potential candidates for liver transplantation. Early diagnosis and initiation of effective dietary therapy have dramatically improved the outcome of GSD type I by reducing the incidence of liver adenoma and renal insufficiency. Nine type I and 3 type III patients have received liver transplants because of poor metabolic control, multiple liver adenomas, or progressive liver failure. Metabolic abnormalities were corrected in all GSD type I and type III patients, while catch-up growth was reported only in two patients. Whether liver transplantation results in reversal and/or prevention of renal disease remains unclear. Neutropenia persisted in both GSDIb patients post liver transplantation necessitating continuous granulocyte colony stimulating factor treatment. Thirteen GSD type IV patients were liver transplanted because of progressive liver cirrhosis and failure. All but one patient have not had neuromuscular or cardiac complications during follow-up periods for as long as 13 years. Four have died within a week and 5 years after transplantation. Caution should be taken in selecting GSD type IV candidates for liver transplantation because of the variable phenotype, which may include life-limiting extrahepatic manifestations. It remains to be evaluated, whether a genotype-phenotype correlation exists for GSD type IV, which may aid in the decision making. CONCLUSION: Liver transplantation should be considered for patients with glycogen storage disease who have developed liver malignancy or hepatic failure, and for type IV patients with the classical and progressive hepatic form.


Asunto(s)
Enfermedad del Almacenamiento de Glucógeno Tipo III/cirugía , Enfermedad del Almacenamiento de Glucógeno Tipo IV/cirugía , Enfermedad del Almacenamiento de Glucógeno Tipo I/cirugía , Hepatopatías/cirugía , Trasplante de Hígado , Adolescente , Adulto , Niño , Femenino , Enfermedad del Almacenamiento de Glucógeno Tipo I/dietoterapia , Enfermedad del Almacenamiento de Glucógeno Tipo III/dietoterapia , Humanos , Hepatopatías/etiología , Masculino , Neutropenia/tratamiento farmacológico , Pronóstico
18.
J Fr Ophtalmol ; 22(2): 213-4, 1999 Mar.
Artículo en Francés | MEDLINE | ID: mdl-10327353

RESUMEN

PURPOSE: To determine wether the cataract extraction method and intraocular lens material affect bacterial contamination of the eye during surgery. METHODS: This retrospective study evaluated microbial contamination of the anterior chamber fluid in three group of patients. Group 1: extracapsular extraction and PMMA lens (354 cases). Group 2: phacoemulsification and PMMA lens (474 cases). Group 3: phacoemulsification and silicone lens with PMMA haptic (264 cases). RESULTS: Microbial contamination rate was in group 1: 5.65%, in group 2: 4.75%, and in group 3: 4.54%. The difference was not statistically significant (chi: 0.321). All contaminants were Gram positive. CONCLUSION: Bacterial contamination rate of the anterior chamber is similar during extracapsular extraction and phacoemulsification, and is not modified when using PMMA or silicone lens.


Asunto(s)
Cámara Anterior/microbiología , Extracción de Catarata , Bacterias Grampositivas/aislamiento & purificación , Lentes Intraoculares , Facoemulsificación , Humanos , Polimetil Metacrilato , Propionibacterium acnes/aislamiento & purificación , Estudios Retrospectivos , Siliconas , Staphylococcus/aislamiento & purificación
19.
Liver Transpl Surg ; 5(2): 136-43, 1999 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-10071353

RESUMEN

Triple immunosuppressive therapy using mycophenolate mofetil (MMF), microemulsion cyclosporine (me-CsA), and prednisone offers the potential for potent immunosuppression without intravenous drug therapy or anti-T-cell antibody induction therapy. This report describes the application of an immunosuppressive protocol (CNp) using MMF, me-CsA, and prednisone as primary immunosuppression for pediatric liver transplant recipients at the University of California at San Francisco. From August 1995 through December 1996, 26 children (17 boys, 9 girls) aged 1 month to 16 years (mean +/- standard deviation, 58 +/- 62 months; median, 31 months) underwent liver transplantation at our institution, receiving CNp as primary immunosuppression. Posttransplantation renal function, incidence of leukopenia, and drug tolerance within the group receiving CNp as primary immunosuppression were compared with those of 19 children who received primary immunosuppression consisting of azathioprine, oil-based gel-encapsulated cyclosporine, and prednisone with anti-T-cell antibody induction therapy at the same institution from October 1993 through July 1995. No significant difference was observed between immunosuppressive protocols in serum creatinine level or incidence of leukopenia requiring medical therapy during the first year posttransplantation. Whereas gastrointestinal symptoms were observed in approximately 30% of CNp recipients during initial immunotherapy, tolerance of CNp primary immunotherapy was routinely achieved by the dose reduction of MMF. At 1 year posttransplantation, 20 children (77%) remained on CNp primary immunotherapy, 5 children (19%) were receiving tacrolimus-based immunotherapy secondary to rejection, and 1 patient (4%) converted to tacrolimus-based immunotherapy secondary to persistent gastrointestinal intolerance. In conclusion, CNp provides an alternative immunosuppressive protocol that eliminates the necessity of intravenous and induction immunosuppressive therapy with no increased incidence of posttransplantation renal dysfunction or leukopenia and is well tolerated in children.


Asunto(s)
Ciclosporina/uso terapéutico , Inmunosupresores/uso terapéutico , Trasplante de Hígado , Ácido Micofenólico/análogos & derivados , Prednisona/uso terapéutico , Adolescente , Niño , Preescolar , Creatinina/sangre , Emulsiones/uso terapéutico , Femenino , Humanos , Lactante , Recién Nacido , Leucopenia/etiología , Masculino , Ácido Micofenólico/uso terapéutico , Complicaciones Posoperatorias , Periodo Posoperatorio , Estudios Retrospectivos
20.
Transplantation ; 67(5): 707-12, 1999 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-10096526

RESUMEN

BACKGROUND: Mycophenolate mofetil (MMF) has been shown to have promise in short-term liver transplantation graft rescue studies. The purpose of this study was to evaluate the long-term efficacy and safety of MMF in liver transplant patients who had failed cyclosporine (CsA)-based conventional immunosuppression. METHODS: Nineteen orthotopic liver allograft recipients were converted from azathioprine to MMF in combination with CsA and prednisone in this prospective, open-labeled, single-center, graft rescue, pilot study. Six patients were taken off CsA when MMF was initiated. A 4-year patient follow-up is reported here. Patients were considered to have failed CsA-based immunosuppression either for refractory rejection, chronic rejection, or severe CsA neurologic toxicity. RESULTS: Twelve patients had complete histologic resolution, two had partial resolution, and three had worsening of their rejection. Thirteen patients had a complete biochemical response; one had a partial response and four had worsening of their rejection. Two patients had no histologic and one no biochemical follow-up. Of the six patients treated with MMF and prednisone alone, four had complete resolution of rejection without recurrence. The majority of adverse reactions were gastrointestinal [nausea and/or vomiting (n=5); diarrhea (n=8); gastritis, duodenitis, or esophagitis (n=4); and ulcers (n=2)] or bone marrow suppressive [leukopenia (n=9), anemia (n=6), and thrombocytopenia (n=5)]. CONCLUSIONS: MMF seems to be an effective alternative immunosuppressive in patients failing CsA-based conventional therapy. MMF may be of particular benefit in patients who do not tolerate CsA or tacrolimus. The long-term safety profile is similar to that of other immunosuppressives.


Asunto(s)
Enfermedad Injerto contra Huésped/prevención & control , Inmunosupresores/uso terapéutico , Trasplante de Hígado/inmunología , Ácido Micofenólico/análogos & derivados , Adulto , Infecciones por Citomegalovirus/inmunología , Femenino , Estudios de Seguimiento , Enfermedades Gastrointestinales/inducido químicamente , Humanos , Inmunosupresores/efectos adversos , Masculino , Persona de Mediana Edad , Ácido Micofenólico/efectos adversos , Ácido Micofenólico/uso terapéutico , Neoplasias/inmunología , Resultado del Tratamiento
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