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SciELO Brasil - Scientific Electronic Library Online (87.877 recursos)

SciELO (Scientific Electronic Library Online) is an electronic library covering a selected collection of Brazilian scientific journals. The objective of the site is to implement an electronic virtual library, providing full access to a collection of serial titles, a collection of issues from individual serial titles, as well as to the full text of articles. The project envisages the development of a common methodology for the preparation, storage, dissemination and evaluation of scientific literature in electronic format.

Brazilian Journal of Infectious Diseases

Mostrando recursos 1 - 20 de 239

  1. Memory: tribute to a master


  2. An unusual case of ectopic tungiasis with pseudoepitheliomatous hyperplasia

    Heukelbach,J.; Sahebali,S.; Van Marck,E.; Sabóia Moura,R.C.; Feldmeier,H.
    Tungiasis is caused by the penetration of the female sand flea Tunga penetrans into the epidermis, and subsequent hypertrophy of the parasite. In most cases lesions are confined to the feet. During a cross-sectional study, an unusual case of ectopic tungiasis in the inguinal area was detected. Histological examination of tissue samples showed a remarkable pseudoepitheliomatous aspect of the epidermis. Clinical features and differential diagnoses are discussed.

  3. Dengue hemorrhagic fever and acute hepatitis: a case report

    Mourão,Maria Paula Gomes; Lacerda,Marcus Vinícius Guimarães de; Bastos,Michele de Souza; Albuquerque,Bernardino Cláudio de; Alecrim,Wilson Duarte
    Dengue fever is the world's most important viral hemorrhagic fever disease, the most geographically wide-spread of the arthropod-born viruses, and it causes a wide clinical spectrum of disease. We report a case of dengue hemorrhagic fever complicated by acute hepatitis. The initial picture of classical dengue fever was followed by painful liver enlargement, vomiting, hematemesis, epistaxis and diarrhea. Severe liver injury was detected by laboratory investigation, according to a syndromic surveillance protocol, expressed in a self-limiting pattern and the patient had a complete recovery. The serological tests for hepatitis and yellow fever viruses were negative. MAC-ELISA for dengue was positive.

  4. Emerging acute Chagas Disease in Amazonian Brazil: case reports with serious cardiac involvement

    Pinto,Ana Yecê das Neves; Valente,Sebastião Aldo da Silva; Valente,Vera da Costa
    Four cases of serious cardiac attacks by autochthonous Trypanosoma cruzi infection from the Brazilian Amazon are reported; three of them occurred in micro-epidemic episodes. The manifestations included sudden fever, myalgia, dyspnea and signs of heart failure. Diagnosis was confirmed by specific exams, especially QBC (Quantitative Buffy Coat) and natural xenodiagnosis. Despite treatment with benznidazol, three patients died with serious myocarditis, renal failure and cardiac tamponade. The authors call attention to the emergence of this disease and reveal a previously unknown pathogenicity of T. cruzi strains in this area, added to a non-usual transmission form.

  5. Evaluation of central supply units in public dental medicine colleges in Brazil

    Sasamoto,Sandra Aragão de Almeida; Tipple,Anaclara Ferreira Veiga; Souza,Adenícia Custódia Silva e; Paiva,Enilza Maria M. de; Souza,Carlos de Paula e; Pimenta,Fabiana Cristina
    A guarantee of quality of all steps involved in processing dental materials is essential to achieve security. A descriptive study was made of how Public Dental Medicine Colleges in Brazil process critical materials and determine the patterns of physical, chemical and biological control in their use of hot air ovens and autoclaves to sterilize these materials. The data were obtained with a questionnaire, sent by mail and analyzed with the software EPI-INFO 6.04. Among the 40 Brazilian public Dental Medicine Colleges, only 16 returned the questionnaire. In eight of these, the individuals responsible for the materials and sterilization center had...

  6. Identification of Leishmania (Leishmania) chagasi isolated from healthy skin of symptomatic and asymptomatic dogs seropositive for leishmaniasis in the Municipality of Rio de Janeiro, Brazil

    Madeira,Maria de Fátima; Schubach,Armando de Oliveira; Schubach,Tânia Maria Pacheco; Leal,Cristianni Antunes; Marzochi,Mauro Célio de Almeida
    Euthanasia of seropositive dogs has been one of the principal measures adopted by the Program for the Control of Leishmaniasis in Brazil for many years. However, its efficacy is currently being questioned. We obtained intact skin samples from 20 Leishmania-reactive dogs from the municipality of Rio de Janeiro that had been referred for euthanasia. The promastigote forms of Leishmania were isolated in culture from 18 of these animals. Fourteen of these isolates were identified as Leishmania (Leishmania) chagasi by isoenzyme electrophoresis; seven of these were from asymptomatic dogs and seven were from symptomatic animals with visceral leishmaniasis. In conclusion, cutaneous...

  7. The influence of occult infection with hepatitis B virus on liver histology and response to interferon treatment in chronic hepatitis C patients

    Silva,Claudia da; Gonçales,Neiva Sellan Lopes; Pereira,Josiane Silveira Felix; Escanhoela,Cecília Amélia Fazio; Pavan,Maria Helena Postal; Gonçales Junior,Fernando Lopes
    Occult hepatitis B virus (HBV) infections have been identified in patients with chronic hepatitis C virus (HCV) infection, although the clinical relevance of occult HBV infection remains controversial. We searched for serum HBV DNA in 106 HBsAg negative/anti-HBc positive patients with chronic HCV infection and in 150 blood donors HBsAg negative/anti-HBc positive/anti-HCV negative (control group) by nested-PCR. HCV genotyping was done in 98 patients and percutaneous needle liver biopsies were performed in 59 patients. Fifty-two patients were treated for HCV infection with interferon alone (n=4) or combined with ribavirin (n=48) during one year. At the end and 24 weeks after...

  8. Risk of tuberculosis among household contacts in Salvador, Bahia

    Lemos,Antonio Carlos; Matos,Eliana D; Pedral-Sampaio,Diana B; Netto,Eduardo M.
    Tuberculosis is one of the most important infectious diseases in the world. Only 68% of the estimated new tuberculosis (TB) cases in Brazil are diagnosed. Our aim was to determine the risk of infection among household contacts. Study design. Cohort of tuberculin-negative household contacts followed for 12 Months. Methods. Household contacts of randomly selected index acid-fast bacilli (AFB)-positive TB cases were evaluated through clinical examination, thorax X-ray, tuberculin, AFB smear and culture. Contacts with a negative response to the tuberculin test (less than 10 mm diameter) were retested after 90 days. Tuberculin reversal (used as a parameter of infection risk)...

  9. Improving survival among Brazilian children with perinatally-acquired AIDS

    Matida,Luiza Harunari; Marcopito,Luiz Francisco; Succi,Regina Celia de Menezes; Marques,Heloisa Helena de Souza; Della Negra,Marinella; Grangeiro,Alexandre; Hearst,Norman
    Brazil was the first developing country to provide free, universal access to antiretroviral treatment for AIDS patients. The Brazilian experience thus provides the first evidence regarding the impact of such treatment on the survival of perinatally acquired AIDS cases in the developing world. MATERIAL AND METHODS: This retrospective cohort study used medical record reviews to examine characteristics and trends in the survival of a representative sample of 914 perinatally acquired AIDS cases in 10 Brazilian cities diagnosed between 1983 and 1998. RESULTS: Survival time increased steadily and substantially. Whereas half of the children died within 20 months of diagnosis at...

  10. Production of monoclonal antibody to subtype 9 of Neisseria meningitidis and the distribution of this subtype in Brazil

    Belo,Elza F.T.; Coutinho,Ligia M.C.C.; Ferraz,Aline S.; De Gaspari,Elizabeth N.
    A new monoclonal antibody (5F81A4P1.9), which is specific for subtype 9 antigen of meningococci, was studied. The antibodies were raised against a previously non-typable (NT) serogroup B strain from Brazilian patients and were found to react with the subtype antigen of prototype reference strains for subtype 9 (M982), as well as with those of homologous strains. The subtype 9 epitope was found in 6.8% of serogroup B strains among 602 strains of Neisseria meningitidis case isolates, including representative isolates from Brazilian states. Subtype P1.9 was predominantly related to serogroup B in Brazil among the isolates collected during the N. meningitidis...

  11. Establishment of the serologic testing algorithm for recent human immunodeficiency virus (HIV) seroconversion (STARHS) strategy in the city of São Paulo, Brazil

    Kallas,Esper Georges; Bassichetto,Katia Cristina; Oliveira,Solange Maria; Goldenberg,Ieda; Bortoloto,Reginaldo; Moreno,Diva Maria Faleiros C.; Kanashiro,Cecilia; Chaves,Mariana Mellilo Sauer; Sucupira,Maria Cecilia A.; Diniz,Aparecido; Mesquita,Fabio C.
    Several strategies aim at characterizing the AIDS epidemic in different parts of the world. Among these, the identification of recent HIV-1 infections using the recently described serologic testing algorithm for recent human immunodeficiency virus (HIV) seroconversion (STARHS) strategy was employed in four testing sites of the City of São Paulo Public Health Department (CSPPHD). Those identified as recently infected were invited to participate in a prospective clinical and laboratory evaluation study. We describe the establishment of the patient identification network and the success in enrolling the participants, as well as their clinical and laboratory characteristics. From May to December 2002,...

  12. Dengue: a review of the laboratory tests a clinician must know to achieve a correct diagnosis

    De Paula,Sérgio Oliveira; Fonseca,Benedito Antônio Lopes da
    Dengue is the most important disease caused by an arbovirus (1, 2, 3 and 4 serotypes) worldwide, especially in the tropical and sub-tropical regions. Its clinical manifestations range from asymptomatic infections to a severe disease characterized by hemorrhage and shock. The incidence of dengue virus activity in the Americas has substantially increased from 1980 to 1994. In Brazil, the increase in the incidence of dengue is especially linked to the dissemination of Aedes aegypti. Thus, a rapid and accurate dengue diagnosis is of paramount importance for effective control of dengue outbreaks [8]. Five serological tests have been used for the...

  13. Multidrug resistant Salmonella typhi and antimicrobial agent quality and bioavailability

    Arya,Subhash C.; Agarwa,Nirmala

  14. Meningitis due to Enterobacter aerogenes subsequent to resection of an acoustic neuroma and abdominal fat graft to the mastoid

    Khan,Fida A.
    Meningitis is an uncommon complication of neurosurgical procedures, with an incidence of 1.1% to 2.5%. Although unusual, the frequency of nosocomial Gram-negative meningitis appears to be increasing. Gram-negative meningitis has been documented following disruption of the dura-arachnoid barrier secondary to trauma or surgery. The association of Gram-negative bacillary meningitis with neurosurgical procedures was first reported in the 1940's. Wolff et al. described the association between Enterobacter species and post-neurosurgical infection. More recently, risk factors for nosocomial Enterobacter meningitis have been characterized by Parodi et al. Adipose graft, as an independent risk factor has not yet been reported. A patient with...

  15. Antibacterial effect of borage (Echium amoenum) on Staphylococcus aureus

    Borage (Echium amoenum) is a large annual plant of the Boraginaceae family, which grows in most of Europe and in northern Iran. The borage flower is used as a medicinal herb in France and other countries. Iranian borage is used in traditional medicine for infectious diseases, flu and as an anti-febrile. We tested the aqueous extract of borage dried flowers in vitro for its antibacterial activity. The extract showed concentration-dependent antibacterial activity against Staphylococcus aureus 8327. This activity was heat resistant, but the activity of freeze-dried extract gradually diminished during a 90-day period. The traditional use of Iranian borage flowers...

  16. Serum ascorbic acid concentration in patients with acute Falciparum malaria infection: possible significance

    Hassan,Garba Ibrahim; Gregory,Ubom; Maryam,Haruna
    Falciparum malaria infection is associated with significant destruction of erythrocytes. This leads to the release of toxic metabolic products, including oxidant compounds.We measured the serum concentration of the antioxidant, ascorbic acid, in 129 patients presenting with acute falciparum malaria infection and in 65 healthy individuals. None of the study subjects administered any form of ascorbic acid supplementation within one week prior to participation in this study. The mean serum ascorbate concentration in infected adult males (n = 49, age range 18-50 years) was found to be 2.02 ± 0.20 mg/dL, and it was 2.03 ± 0.24 mg/dL in infected adult...

  17. Laboratory tests in the detection of extended spectrum beta-lactamase production: National Committee for Clinical Laboratory Standards (NCCLS) screening test, the E-test, the double disk confirmatory test, and cefoxitin susceptibility testing

    d'Azevedo,Pedro A.; Gonçalves,Ana Lúcia S.; Musskopf,Maiara I.; Ramos,Carina G.; Dias,Cícero A. G.
    Extended spectrum beta-lactamase (ESBL) production by Klebsiella sp. and E. coli is an emerging problem. In this study, 107 clinical isolates (53 E. coli, 47 K. pneumoniae and 7 K. oxytoca) screened as ESBL producers by the NCCLS disk diffusion procedure were submitted to a double disk confirmatory test (DDT) and to the E-test double strip for confirmation of ESBL production by demonstration of clavulanic acid inhibition effect (CAIE). Only 72/107 (67%) of the isolates were confirmed as ESBL producers by DDT, with diverse results among species. By the E-test, 58/107 (54%) isolates were confirmed as ESBL producers, and 18/107...

  18. Effect of N-acetyl-L-cysteine on lymphocyte apoptosis, lymphocyte viability, TNF-a and IL-8 in HIV-infected patients undergoing anti-retroviral treatment

    Treitinger,Aricio; Spada,Celso; Masokawa,Ivete Yoshico; Verdi,Júlio César Vidal; Silveira,Mariette Van Der  Sander; Luis,Magali Chaves; Reis,Marcellus; Ferreira,Silvia Inês Alejandra Cordova de Pires; Abdalla,Dulcinéia Saes Parra
    N-acetyl-L-cysteine (NAC) has been proposed as an additional therapeutic agent for AIDS patients because it reduces human immunodeficiency virus type 1 (HIV-1) replication in stimulated CD4+ lymphocytes, and it ameliorates immunological reactivity. In a randomized, 180-day, double-blind, placebo-controlled trial performed with HIV-infected patients classified as A2 and A3 according to the criteria of the Center for Disease Control and Prevention, we investigated the effects of oral administration of NAC on HIV-infected patients undergoing their first anti-retroviral therapy; viral load, CD4+ lymphocyte, lymphocyte viability and apoptosis, and TNF-alpha and IL-8 levels were determined. Sixteen patients who received anti-retroviral therapy plus a...

  19. Prevalence of human Papilloma Virus in HIV-positive and HIV-negative patients in the State of Bahia: a pilot study

    Queiroz,Conceição; Travassos,Ana Gabriela; Studart,Eduardo; Araújo Filho,José Bouzas; Sarno,Carla Kruchewsky; Pinheiro,Carla Cristiane
    Human Papilloma Virus (HPV) plays a central role in the development of cervical cancer. However, other coexisting factors, such as HIV infection, must be present for this to occur. We evaluated the prevalence of HPV in HIV-positive and HIV-negative patients in the city of Salvador , Bahia, Brazil, and determined the most prevalent types of HPV in these patients. Fifty-five cases were selected from among patients attending three institutions providing cervical pathology services in the city of Salvador. HIV testing (Elisa/WB), HPV-DNA testing by PCR, colposcopy, cytology and biopsy were carried out in all patients. The histopathological results were classified...

  20. Demographic and anthropometrical analysis and genotype distribution of chronic hepatitis C patients treated in public and private reference centers in Brazil

    Focaccia,R.; Baraldo,D.C.M.; Ferraz,M.L.G.; Martinelli,A.L.C.; Carrilho,F.J.; Gonçales Jr.,F.L.; Pedroso,M.L.A.; Coelho,H.S.M.; Lacerda,M.A.; Brandão,C.E.; Mattos,A.A.; Lira,L.G.C.; Zamin Jr.,I.; Pinheiro,J.O.P.; Tovo,C.V.; Both,C.T.; Soares,J.A.S.; Dittrich,S.
    Hepatitis C virus (HCV) infection is a serious public health problem, since 80% to 85% of HCV carriers develop a persistent infection that can progress into liver cirrhosis and hepatocarcinoma. Considering that the response of hepatitis C patients to combination therapy with interferon and ribavirin depends on HCV characteristics as well as on host features, we made a retrospective analysis of demographic and anthropometrical data and HCV genotype distribution of chronic hepatitis C patients treated in public and private reference centers in Brazil. The medical records of 4,996 patients were reviewed, 81% from public and 19% from private institutions. Patients'...

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