Oral shedding of HSV-1 and EBV and oral manifestations in paediatric chronic kidney disease patients and renal transplant recipients.

OBJECTIVE: Previous research demonstrated that salivary shedding of HSV-1 and EBV occurs often in adult renal transplant recipients, but there is a lack of studies on the presence of them in the saliva of paediatric population. Therefore, the objective of this study is to describe oral characteristics and to compare the shedding profile of HSV-1 and EBV in the saliva of children with renal transplant to that of chronic kidney disease patients and controls. METHODS: This is a cross-sectional study involving 100 children, being 25 renal transplant recipients, 25 chronic kidney disease patients and 50 healthy children. Demographic and oral clinical characteristics were assessed. Saliva samples were collected and submitted to screening for EBV and HSV-1 by using nested polymerase chain reaction technique. Fisher's exact, Pearson's chi-square and Kruskal-Wallis tests were used for statistical analysis at a significance level of 5%. RESULTS: Oral shedding of HSV-1 (28%) and EBV (60%) were significantly higher in renal transplant recipients compared to the other groups. Single vesicles in the oral mucosa were statistically associated with the presence of HSV-1 (p = .035). In children with chronic kidney disease, there was a higher prevalence of pale oral mucosa (32%) and enamel hypoplasia (40%) compared to paediatric renal transplant recipients and controls. Dental calculus (36%), candidiasis (8%), drug-induced gingival overgrowth (16%), mouth blisters (8%), xerostomia (12%) and salivary gland enlargement (20%) were more common in paediatric renal transplant recipients. CONCLUSIONS: Therefore, it can be concluded that salivary shedding of HSV-1 and EBV in paediatric patients was more often found in renal transplant recipients than in the renal failure and control children. Transplanted recipients showed more oral manifestations than renal failure and control children did.

Avaliação da saúde bucal e detecção do vírus HSV-1 e EBV na saliva de pacientes pediátricos antes e depois do transplante renal / Assessment of oral health and detection of HSV-1 and EBV in saliva of pediatric patients before and after renal transplantation

O transplante renal é uma modalidade de tratamento para substituir os órgãos em falência. As manifestações orais mais freqüentes nos pacientes portadores de insuficiência renal crônica (IRC) e transplantados renais (TR) são as alterações do esmalte, as estomatites, gengivites, diminuição do fluxo salivar, hiperplasias gengivais e as infecções por vírus, bactérias e fungos. A prevalência de infecções ativas causadas pelos herpesvírus aumentam quando há imunossupressão dos indivíduos. Em transplantados renais, apesar de ser realizada a profilaxia antiviral, a infecção clínica pelos vírus desta família tem levado a muitas complicações póstransplante aumentando a mortalidade e a morbidade destes pacientes. O objetivo deste estudo foi avaliar comparativamente as condições bucais e a presença dos vírus HSV-1 e EBV na saliva de pacientes pediátricos com IRC, TR e em pacientes normorreativos, através da técnica de PCR. Aplicou-se questionário a todos os pais ou responsáveis para obtenção dos dados demográficos, histórias médica e odontológica. Realizou-se avaliação da saúde bucal e coleta de saliva de 100 pacientes pediátricos de 0 à 16 anos, divididos em 3 grupos. O grupo 1 foi composto por 25 crianças insuficientes renais crônicos, o grupo 2 por 25 crianças transplantadas renais na Santa Casa de Misericórdia de São Paulo, e o grupo 3 por 50 crianças normorreativas na Clínica Odontológica da FOUSP. Independentemente do grupo, a maioria das crianças exibia pobre higiene oral, gengivite e moderada incidência de cárie...

Renal transplantation may be a treatment choice for patients with a failing kidney. Patients who present chronic renal failure and have undergone renal transplantation may show enamel abnormalities, periodontal disease, decrease of the salivary flow and gingival enlargement as common oral manifestations. Bacterial, fungal and viral infections can also develop, being the later a major cause of post-transplantation morbidity and mortality despite the antiviral prophylaxis. Thus, the purpose of this study was to observe the occurrence of oral manifestations and also to detect the presence of herpes virus 1 (HSV-1) and Epstein-Barr virus (EBV) in the saliva of pediatric renal transplant patients (RT), pediatric patients with chronic renal failure (CRF) and immunocompetent patients, comparing the results among the three experimental groups. All the analyses were performed through the polymerase chain reaction (PCR). A questionnaire was applied to the respective parents or legal responsible in order to obtain the demographic data, medical and dental histories. Oral manifestation records and saliva samples were obtained from 100 pediatric patients with an age that ranged from 0 to 16 years old. The experimental groups consisted of: Group 1 (G1): 25 children with chronic renal failure, group 2 (G2): 25 children after renal transplantation conducted at Santa Casa de Misericórdia of São Paulo city and group 3 (G3): 50 immunocompetent children clinically examined at the School of Dentistry, University of São Paulo...