Navegando por Orientadores "BRITO, Arival Cardoso de"

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Ciclosporina A no eritema nodoso hansênico com manifestações sistêmicas: avaliação clínica, laboratorial e histopatológica
(Universidade Federal do Pará, 2003-01-28) AZEVEDO, Maria do Socorro Marques; BRITO, Arival Cardoso de; http://lattes.cnpq.br/0563291980190339
The ENL is a severe and acute interference that attacks patients of lepromatous and borderline lepromatous leprosy forms from Ridley and Jopling classification. In this study, the immunomodulator drug cyclosporine A was used to evaluate its effectiveness in ENL reaction, whose treatment is based on the use of drugs as thalidomide that has several restrictions and that induce dependence among other damages. Ten ENL patients with systemic manifestations and more than two reactions episodes were chosen. These patients had taken high doses of corticosteroids during years and eight of they, took thalidomide more than three times too. All patients were followed clinically for 90 days and took 3-5 mg/kg/daily, besides they accomplish laboratory exams in the zero day, 15 th and 60 th of use cyclosporine A and made also hystopathologic exams (before and 60 days after cyclosporine A). It was requesting the next laboratory exams: blood-count; leuko-count; TGO; TGP; urea and creatinine. Among laboratory exams changes, there was leucocytosis in 70% of patients that was reduced until the end of follow up in the same percentage. Biochemical exams didn't show significance disturb, except for the increase of TGO in one patient and of TGP in another, besides two cases who showed increase of urea and creatinine, but later on, they were better without any additional assistance. In 40 % of patients, the first's hystopathologic exams, alterations were represented for granulomatosis dermatitis and in 30% of sick ones, for nodular dermatitis. In second exams, there was change to superficial and deep infiltration in the blood vessel walls, in 50 % of cases; septal panniculitis in 20 %. It denotes histological improvement verified in the first fifteen days of therapy. The cyclosporine A action was specially useful in systemic symptoms, except in the cases who had neuritis. Then, cyclosporine A can be an alternative for clinical improvement to leprosy reaction type II.
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Doença de Jorge Lobo: estudo histopatológico retrospectivo de casos registrados no serviço de dermatologia da Universidade Federal do Pará no período de 1967 a 2009
(Universidade Federal do Pará, 2010) BITTENCOURT, Maraya de Jesus Semblano; BRITO, Arival Cardoso de; http://lattes.cnpq.br/0563291980190339
Jorge Lobo‟s disease (JLD) or lacaziosis is a chronic, granulomatous skin and subcutaneous tissue infection caused by the fungus Lacazia loboi. Clinical lesions are generally polymorphous, often presenting with a keloid-like aspect, and most often involving ears or limbs. Histopathology remains the “gold standard” exam to reach diagnosis. Few clinical-pathological correlation studies on this disease are available to date. Our goal was to systematically review cases of JLD diagnosed at the dermatopathology laboratory of the Dermatology Service of the Federal University of Pará, Brazil, from 1967 to 2009. After a thorough chart review, we could retrieve demographic and clinical data, as well as histopathological features from each case studied. 59 biopsies from 45 patients were evaluated. The sample consisted of 37 men and eight women, with a mean age of 50 years. Most patients were agricultural workers (55%), of which 93% were males. Fifty-nine percent of the lesions showed a keloid-like appearance. Verrucous (8%), plaque (3%), gummatous (1%), and hyperchromatic macular (1%) lesions were less frequently observed. Most skin lesions occurred on the lower limbs (56%). Histopathologically, the stratum corneum showed hyperkeratosis in 71% of the biopsies, associated with parakeratosis in 37% and with orthokeratosis in 50%. Transepidermal elimination of parasites (TEP) was present in 36% of the cases in association with hyperkeratosis in 95% (p=0.0121) and with parakeratosis in 90% (p<0.0001). The epidermis showed a hyperplastic appearance in 58% of the specimens, was atrophic in 29%, normal in 12%, and ulcerated in 8% of them. There was a hyperplastic epidermis (86%, p=0.0054) in sites where TEP took place. We could also observe the presence of parasites in the epidermis in 30% of the biopsies, in which an association with TEP occurred in 89% (p<0.0001). There was no statistically significant relationship between the occurrence of TEP and the clinical aspect of the lesion (p=0.4231). Lymphocytes, macrophages and giant cells of the foreign-body type were predominant in the infiltrate, being observed in 100% of the cases. Plasma cells were seen in 35%, neutrophils in 15%, and eosinophils in 11% of the cases. There was a statistically significant relationship between the occurrence of TEP and the presence of neutrophil infiltration (p=0.0016). An exudative reaction pattern was present in 10% of the biopsies, and 11% exhibited focal areas of necrosis. Langhans giant cells were observed in 59% of the biopsies, and asteroid bodies in 5%. Pseudo-Gaucher cells were present in 69% of the cases, and fibrosis in 96%. The infiltrate showed extension to the reticular dermis in all cases, and to the deep dermis in 88%. A subcutaneous spread of the infiltrate occurred in 10% of the cases, with identification of parasites within the fat tissue in one of them. As for age distribution, sex and profession of the patients, the data overlapped those of the literature. The results allowed us to evaluate epidemiological, clinical and histopathological profiles of the disease, which in certain respects differed from the classically described ones of the literature, especially concerning characteristics of the epidermis, inflammatory cell infiltrate, and location of lesions.
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Doenças tropicais e infecciosas como causa de morte atestada e classificada: um estudo de concordância, no estado do Pará, no período de 1996 a 2001
(Universidade Federal do Pará, 2003) NEVES, Dilma Costa de Oliveira; BRITO, Arival Cardoso de; http://lattes.cnpq.br/0563291980190339
The lack of precision in the assertion of the basic cause of death is a particularly important source of mistakes in the analysis of mortality according to causes. The objective of this study was to evaluate the concordance between the cause of death attested by the doctor and the cause classified with the use of international rules of basic cause of death and its influence in the profile of mortality caused by tropical, infectious and parasitic diseases, in the State of Pará, from 1996 to 2001. The study was of the descriptive, exploratory type, and had as data base the death certificates from the regional system of mortality information. The selection of data was made with the use of the softwares Excel 7.0 and EPI-INFO 6.04, while the mortality coefficient (MC) by cause, the observed concordance (OC) and the Kappa were used for analysis. The found results show a similarity between the attested and the classified causes (septicemias, diarrheas and gastroenteritis of presumably infectious origin, AIOS, tuberculosis and malaria), with significant divergences in the values of MC by cause the in years studied (1996, p=0.0426; 1997, p=0.0223; 1998, p=0.001; 1999, p=0.0023; 2000, p=0.009 and 2001, p=0.0023). The values found for the OC and the Kappa reflect the restrictions imposed by the incorrect fill of the death certificates and the necessity to implement the tabulations of multiple causes of death in the municipal districts.
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Imunoexpressão para CD1a em lesões cutâneas na doença de Jorge Lobo
(Universidade Federal do Pará, 2009) UNGER, Deborah Aben-Athar; BRITO, Arival Cardoso de; http://lattes.cnpq.br/0563291980190339
Jorge Lobo’s disease (DJL) is a chronic infection caused by the fungus Lacazia loboi, endemic in South America, especially in the Brazilian Amazon region. The most common clinical presentation is parakeloidal lesion located mainly in the lower limbs in men who practice agricultural activity. The fungus can be identified by both mycological and anatomopathological examination. The main objective of this study was to investigate the possible role of Langerhans' cells (LC) in the pathogenesis of the disease in tissue samples from skin lesions, using immunohistochemical technique. Thirty-three medical records were selected with their respective paraffin blocks of skin biopsies from patients with DJL (group 1) registered in the dermatology service at the Federal University of Para in the period from 1955 to 2005. The control group consisted of 10 paraffin blocks from normal skin (group 2) and 42 blocks from patients with paracoccidioidomycosis (PCM) (Group 3). In the analysis of patient medical records data were collected regarding age, sex, origin, profession, location and clinical type of the lesions. Langerhans cells were identified by immunohistochemistry using anti-CD1a antibody (Serotec). Patients were mostly men (84, 8%), farmers (72. 7%) aged between 46-65 years, with predominance of parakeloidal lesions (81. 8%) in the lower limbs (45. 5%). The number of positive cells was statistically analyzed. The LC were visualized along the epidermis in all biopsies from Jorge Lobo's disease. The morphology and the number of cells, did not differ from normal skin (p> 0. 05), and was increased when compared to the PCM lesions (p <0. 05). Langerhans cells were present in Jorge Lobo’s disease skin lesions similarly to the way they are in normal skin, not suffering any numerical or morphological alterations, unlike what occurred in PCM. These results suggest that in DJL fungi probably present some escape mechanism of the local immune system to evade the antigen presentation by Langerhans’ cells.
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Imunomarcação tecidual para o fator XIIIa+ em dendrócitos dérmicos de lesões cutâneas com doença de Jorge Lobo
(Universidade Federal do Pará, 2010) CARNEIRO, Clivia Maria Moraes de Oliveira; BRITO, Arival Cardoso de; http://lattes.cnpq.br/0563291980190339
Jorge Lobo's disease (DJL) is a deep fungal infection caused by Lacazia loboi which mainly affects males farmers, with the clinical form keloid and location of the lower limbs. The highest incidence is found in the Brazilian Amazonia. There are few reports on immune tissue lesions of patients. This study aims to evaluate a possible role in the pathogenesis of the disease by factor XIIIa dermal dendrocytes (FXIIIa DD) in skin lesions, using the technique of immunohistochemistry. 33 skin biopsies were analyzed from patients with DJL. The control group consisted of 10 normal skin biopsies originating from patients without dermatological diseases and 61 biopsies from patients with paracoccidioidomycosis (PCM). The results obtained by records analyzing patients' revealed that DJL affects mainly men (84.8%), farmers (72.7%) with 46-65 years old (51.5%), coming from the northeastern Pará state (51.5%) with clinical form keloid (81.8%) and predominant location of lesions in the lower limbs (45.5). The values of the count of FXIIIa DD in skin lesions of DJL were not affected by variations in gender, age, occupation, origin, clinical manifestation and localization of lesions. The amount of FXIIIa DD in patients with DJL was higher than that found in the control group of patients with healthy skin and in the group of patients with PCM to both the histopathology of loose granuloma (GF) and organized granuloma (GBO). Because of FXIIIa DD be considered precursors of Langerhans cells (LCs) can be suggested that their increase in DJL reflects a reservoir for the LCs and transform them time and again, don’t allowing their decrease. It has been demonstrated the increase in the levels of Th2 cytokines (TGF-β) in the DJL, and the increase of FXIIIa DD that is able to secrete the factor TNF-α, observed in this study, shows a dominance of Th1. Whereas there is a co expression of cytokine profiles of both, the study suggests the existence of mixed patterns. So, the results obtained in this work suggest that DJL is a spectral disease, with a tendency of resistance or susceptibility. What might explain the existence of focal cases even with long duration of disease and disseminated cases like early manifestation of DJL.
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Papilomavírus humano associado a lesões de cérvix uterina
(Universidade Federal do Pará, 1997-12-09) CAVALCANTE, Vânia Lúcia Noronha; LINHARES, Alexandre da Costa; VILLA, Luisa Lina; MELLO, Wyller Alencar de; http://lattes.cnpq.br/1784167608719139; BRITO, Arival Cardoso de; http://lattes.cnpq.br/0563291980190339
With the aim of improving our knowledge on the role of human papillomavirus (HPV) in the aetiopathogenesis of cervical cancer in Northern Brazil, it was studied the prevalence of HPV among 228 women with lesions of uterine cervix attending Ofir Loiola Institute, in Belem, Para, from March, 1992 to May, 1996. Histopathological examination was performed with all cervical biopsy sample obtained from these patients. In addition, specimens were analysed through different laboratory techniques to detect HPV DNA. The patients were assigned to three groups, according to the diagnosis made by histopathology, as follows: A, including women suffering from invasive epidermoid carcinoma or adenocarcinoma; B, 54 patients having either cervical intraepithelial neoplasia grade ll or lll (CIN ll or CIN lll); and C, involving 19 women with chronic cervicitis. Over all, the prevalence rates of HPV in groups A, B and C, as determine by PCR and/or dot-blot were 70.3%, 63.0% and respectively. HPV 16 predominated over other genotypes, accouting for 60.4% and 54.5% of types identified in groups A and B, respectively. Altogether HPV types 16, 18 and 33 were detected in 71.4% of positive HPV patients belonging to group C. The in situ hybridization (ISH) technique, including polyvalent HPV types 6/11, 16/18 and 31/33/35 specific probes, was used to examine 155 of the 228 samples tested by PCR, yielding HPV-positive results in 17.4% of them. Using this latter procedure, that is, PCR, the positivity rate was of much higher, 65.2%, than that of ISH. With regards to the potential HPV concurrent risck factors for the development of uterine cervical malignancies , it is noteworthy that 40% of women assigned to groups A and B reported having had first sexual intercourse when aged 15 years or less. During the interview, howewer, the number of lifetime sexual partners reported by most of them ranged from 1 to 3, suggesting lack of promiscuity among the sampled patients. In general, our data accord with those from other studies carried out throughout the world, indicating that HPV plays a significant role in the aetiology of both cervical inttraepithelial neoplasia and carcinoma of the uterine cervix. Further and broader investigations should however be carried out, in order to better understand the epidemiological features of HPV infection in the Amazon Region.
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Prevalência das dermatoses infecciosas e correlação com o estado imunológico de pacientes com HIV atendidos em Centro de Referência em Belém – Pará, Brasil
(Universidade Federal do Pará, 2012) SANTOS, Josie Eiras Bisi dos; BRITO, Arival Cardoso de; http://lattes.cnpq.br/0563291980190339
Skin disorders affect about 90% of patients infected with human immunodeficiency virus (HIV) in some stage of their disease. The skin manifestations are broad and include viral, bacterial and fungal infections and noninfectious inflammatory diseases. Some of these skin conditions are considered markers of HIV infection and acquired immunodeficiency syndrome (AIDS), they reflect the current state of the patient's immune, due to the occurrence more prevalent in patients with low CD4 cell count serum. Even with the technological evolution of laboratory methods, dermatological signs are still a basic index of the presence and the clinical course of HIV infection. The present study aims to assess the prevalence of skin diseases of infectious etiology in patients with HIV assisted in the Specialized Reference Unit in Special Infectious and Parasitic Diseases in Belém-Pará, Brazil, from March 2011 to October 2011. We conducted a cross-sectional study by clinical and laboratory evaluation of 210 patients with HIV. Serology, cytologic, mycological and skin biopsy with histopathologic examination were performed according to need. The overall prevalence of skin diseases was 49% Dermatological diseases identified were superficial mycoses, onychomycosis, scabies, viral warts, bacterial infections, genital warts, candidiasis, herpes simplex, herpes zoster, leprosy, syphilis, Kaposi's sarcoma and disseminated histoplasmosis skin. The median CD4 cell count in patients with infectious dermatoses was 298 cells/mm3, significantly lower (p=0.0158 *) compared to the median of the patients without infectious dermatoses (384 cells/mm3). The median CD4/CD8 ratio in patients with infectious skin disease was 0.30, significantly lower (p=0.0138 *) compared to the median of the patients without infectious skin disease (0.41). The median viral load in patients with infectious dermatoses was 173 cópias/mm3 and those without infectious skin disease was 25 cópias/mm3, there is no real difference between the groups (p=0.0741). The occurrence of infectious skin diseases according to CD4 cell count showed that there is significant association between viral warts and herpes simplex virus with the CD4 cell count below 350 cells/mm3 (p= 0.0182* and p=0.0428*, respectively). The variation in the prevalence of infectious dermatoses as time of use of antiretroviral therapy (HAART) showed that only superficial mycoses showed a significant increase in the prevalence when compared to patients who did not perform HAART. In the literature, studies of prevalence vary widely between services due to the type and location of the selected sample. The results found in this study characterize patients from the State of Pará, Brazil, sometimes agreeing with the information contained in other prevalence studies in the literature.