Wesley Ribeiro Campos

Congenital Toxoplasmosis in Southeastern Brazil: Results of Early Ophthalmologic Examination of a Large Cohort of Neonates

OBJECTIVE To report results of early ophthalmologic examinations in a large cohort of newborns with congenital toxoplasmosis (CT) after neonatal screening. DESIGN Cross-sectional analysis of a cohort. PARTICIPANTS A total of 178 newborns with confirmed CT from 146,307 screened babies (95% of live births) from Minas Gerais state, southeastern Brazil. METHODS From November 2006 to May 2007, newborns underwent neonatal screening by immunoglobulin (Ig)M capture of dried blood samples. On all positive or suspected cases, confirmative serology was performed on babies and their mothers. Congenital toxoplasmosis was confirmed in newborns who had IgM and/or IgA and IgG, or IgG associated with suggestive ocular lesions (with IgM and IgG in the mother). Ophthalmologic evaluation consisted of indirect ophthalmoscopy with a lid speculum. Pediatric examination and radiologic studies of the central nervous system were also performed. In selected cases, biomicroscopy of the anterior segment, fundus photographs, or ultrasonography (B-scan) was performed. MAIN OUTCOME MEASURES Prevalence of retinochoroidal lesions, either cicatricial or active, and their location and associated findings, such as vascular sheathing, hemorrhage, vitreous opacities, and retinal detachment, were evaluated. The occurrence of cataract, microphthalmia, microcephaly, intracranial calcification, and hydrocephalus was also recorded. RESULTS Of 146,307 neonates screened, 190 had CT, yielding a prevalence of 1 in 770 live births, of whom 178 (93.7%) underwent standardized ophthalmologic examination at an average age of 55.6+/-16.6 days. Of these 178 infants, 142 (79.8%) had retinochoroidal lesions consistent with CT in at least 1 eye. Bilateral involvement was noted in 113 patients (63.5%). Macular involvement was seen in 165 eyes (46.3%) of 111 patients (62.4%). Active lesions were observed in 142 eyes (39.9%) of 85 patients (47.8%). These lesions were located in the macula of 75 eyes (21.1%) and were associated with retinal vascular sheathing in 44 eyes (12.4%). CONCLUSIONS A high prevalence of CT was encountered (1/770) with high rates of early retinochoroidal involvement ( approximately 80%) and many active lesions (in approximately 50%), indicating a possibly more severe ocular involvement by CT in Brazil than in other parts of the world. The hypotheses of higher parasite virulence and increased individual susceptibility are being currently investigated.

Ocular Manifestations in Dengue Fever

Purpose: To report a case of Dengue fever resulting in permanent visual loss in both eyes due to retinal capillary occlusion. Methods: Case report. Results: Severe permanent visual loss occurred in a patient with Dengue fever. Dilated fundus exam showed vascular sheathing with associated retinal hemorrhages at the equator and cotton wool spots in the maculae of both eyes. Fluorescein angiography revealed areas of capillary nonperfusion at the equator and in the macula. The diagnosis of Dengue fever was confirmed by serology detecting IgM antibodies to the Dengue virus. Conclusion: Ocular abnormalities may be seen in patients with Dengue fever, therefore ophthalmoscopy should be performed in patients presenting with severe forms of the disease.

Cat-scratch disease: ocular manifestations and visual outcome

To describe the intra-ocular manifestations of cat-scratch disease (CSD) found at two uveitis reference centers in Brazil. Retrospective case series study. Review of clinical records of patients diagnosed with CSD in the Uveitis Department of São Geraldo Hospital and the Ophthalmology Department of the Instituto de Pesquisa Clínica Evandro Chagas—FIOCRUZ, from 2001 to 2008. In the 8-year period, 24 patients with the diagnosis of CSD were identified. Twelve patients were male and 12 female. The mean age was 27.04 years (range 7–56). Sixteen patients (66.6%) presented with a history of a cat scratch and all patients reported cat exposure. Visual acuity ranged from counting fingers to 1.0 in the affected eye. Thirteen patients presented with bilateral disease. Sixteen (66.6%) patients complained of systemic symptoms, including fever, lymphadenopathy, liver and spleen enlargement and rash. All patients presented with serum antibodies (IgG) to Bartonella henselae. Thirty-seven eyes were affected. The most common findings were small areas of retinal infiltrates which occurred in 11 eyes (29.7%) and angiomatous lesions which occurred in nine eyes (24.3%). Neuroretinitis occurred in only six eyes (16.2%). The most common findings of CSD in our study were retinal infiltrates and angiomatous lesions. CSD patients may present with significant visual loss. Patients may benefit from systemic treatment with antibiotics.

Interleukin-10 Gene Polymorphism (-1082G/A) is Associated with Toxoplasmic Retinochoroiditis

PURPOSE Experimental data have demonstrated a relevant role for IL-10, an anti-inflammatory cytokine, in the modulation of acute ocular toxoplasmosis. Therefore, this study was conducted to investigate the possible association between an IL10 gene polymorphism at position -1082 and toxoplasmic retinochoroiditis (TR) in humans. METHODS One hundred patients with diagnosed TR were recruited from the Uveitis Section, Federal University of Minas Gerais. For comparison, one hundred healthy blood donors with positive serology for toxoplasmosis and without retinal signs of previous TR were included in the study. Genomic DNA was obtained from oral swabs of individuals and amplified using polymerase chain reaction (PCR) with specific primers flanking the locus -1082 of IL10 (-1082G/A). PCR products were subjected to restriction endonuclease digestion and analyzed by polyacrylamide gel electrophoresis, to distinguish allele G and A of the IL-10 gene, allowing the detection of the polymorphism and determination of genotypes. RESULTS There was a significant difference in the genotype distribution between TR patients and control subjects (chi(2) = 6.33, P = 0.04). Carriers of the IL10 -1082 A allele (AA+AG genotypes) were more often patients with TR than control subjects (chi(2) = 5.97, P = 0.01, OR, 2.55; 95% CI, 1.11 < OR < 5.55). In a subgroup analysis, there was no significant difference in genotypes and allele carriage regarding visual acuity, involvement of both eyes and TR recurrence. CONCLUSIONS This study suggests that the genotypes related with a low production of IL-10 may be associated with the occurrence of TR.

Vitreoretinal morphology in active ocular toxoplasmosis: a prospective study by optical coherence tomography

Aim: To investigate the third generation optical coherence tomography (OCT3) findings in patients with active ocular toxoplasmosis. Methods: A prospective observational case series, including 15 patients with active ocular toxoplasmosis in at least one eye evaluated at a single centre. Vitreoretinal morphological features at baseline and changes within a 24-week follow-up interval on OCT3 were evaluated. Results: The active ocular toxoplasmosis lesion was classified clinically as punctate (n = 6), focal (n = 6) or satellite (n = 3). Retinal layers were hyper-reflective at the active lesion site, and some degree of retinal pigment epithelium-choriocapillaris/choroidal optical shadowing was seen in all patients. In general, the retina was thinned at the active lesion site in eyes with punctate lesions and thickened in eyes with focal and satellite lesions. When detected by OCT3, the posterior hyaloid appeared thickened. While focally detached over punctate lesions, the posterior hyaloid was partially detached, but still attached to the lesion in focal and satellite lesions. Additional findings (not detected on clinical examination) include diffuse macular oedema (n = 6), vitreomacular traction (n = 3) and maculoschisis (n = 1). During follow-up, a decrease in retinal thickness and focal choriocapillaris/choroidal relative hyper-reflectivity were observed at the former lesion site, and posterior vitreous detachment progressed/occurred in all patients. Conclusion: OCT3 enabled identification of morphological features underestimated on clinical examination in patients with ocular toxoplasmosis, which may expand the clinical spectrum of the disease. Further studies are needed to verify the relevance of OCT3 in assisting with the diagnosis and management of ocular toxoplasmosis.

Consenso Brasileiro de Espondiloartropatias: espondilite anquilosante e artrite psoriásica diagnóstico e tratamento - primeira revisão

1. Assistente-doutor da Disciplina de Reumatologia do Departamento de Clinica Medica da Faculdade de Ciencias Medicas da Universidade Estadual de Campinas (FCM-UNICAMP). Presidente da Comissao de Espondiloartropatias da Sociedade Brasileira de Reumatologia (SBR). 2. Professor Assistente da Disciplina de Reumatologia da Universidade Federal do Parana (UFPR). Mestre em Medicina Interna. 3. Professor Assistente da Disciplina de Reumatologia da Pontificia Universidade Catolica de Campinas (PUCCAMP). 4. Professor Adjunto, Doutor em Oftalmologia da Universidade Federal de Minas Gerais (UFMG). 5. Professora Adjunta da Faculdade de Ciencias Medicas da Universidade Estadual do Rio de Janeiro (UERJ) e Professora do Programa de Pos-Graduacao em Medicina da Universidade Federal do Rio de Janeiro (UFRJ). 6. Professor Adjunto, Doutor de Reumatologia do Departamento do Aparelho Locomotor da Universidade Federal de Minas Gerais (UFMG). 7. Professor Doutor-Assistente e Coordenador da Unidade de Espondiloartropatias da Disciplina de Reumatologia da Faculdade de Medicina da Universidade de Sao Paulo (FMUSP). 8. Professora Associada e Responsavel pelo Setor de Reumatologia Pediatrica da Universidade Federal de Sao Paulo (UNIFESP). 9. Professor Regente da Disciplina de Reumatologia da Faculdade de Medicina da Pontificia Universidade Catolica do Rio Grande do Sul (PUC-RS). 10. Professor Titular de Reumatologia da Faculdade de Medicina Souza Marques, Rio de Janeiro – RJ. 11. Professora da Disciplina de Coloproctologia da Fundacao Faculdade Federal de Ciencias Medicas de Porto Alegre (FFFCMPA). 12. Assistente-Doutor e Chefe do Grupo de Reumatologia do Instituto de Ortopedia e Traumatologia da FMUSP. 13. Chefe do Servico de Reumatologia e Coordenador da Residencia Medica do Hospital Geral de Fortaleza. 14. Chefe do Departamento de Medicina Interna do Hospital Geral de Goiânia. Doutor em Reumatologia pela FMUSPUniversidade Estadual de Campinas Faculdade de Ciencias Medicas Departamento de Clinica Medica

Interleukin-6 gene polymorphism (-174 G/C) is associated with toxoplasmic retinochoroiditis.

Purpose:  Experimental data have demonstrated a relevant role for IL‐6 in the modulation of acute ocular toxoplasmosis. Therefore, we aim to investigate the possible association between the IL‐6 gene polymorphism at position ‐174 and toxoplasmic retinochoroiditis (TR) in humans.

TNF-α gene polymorphism (-308G/A) and toxoplasmic retinochoroiditis

Aim: To investigate the possible association between TNF-α (−308G/A) polymorphism and toxoplasmic retinochoroiditis (TR) in humans. Methods: A cross-sectional study was performed which included 100 Brazilian patients with diagnosis of TR and 100 matched control subjects with positive serology to toxoplasmosis and no sign of uveitis. Genomic DNA was obtained from oral swabs of all subjects and amplified using the polymerase chain reaction (PCR) with specific primers flanking the locus −308 of TNF-α. PCR products were submitted to restriction endonuclease digestion and analysed by polyacrylamide gel electrophoresis to distinguish alleles, allowing the determination of the genotypes. Results: There was no significant difference in the genotype (χ2 = 0.79, p = 0.67), allele (χ2 = 0.095, p = 0.75) and allele carriage (χ2 = 0.70, p = 0.40) frequencies in TR patients compared with control subjects. Frequencies of the genotype (χ2 = 2.05, p = 0.35) and allele (χ2 = 0.13, p = 0.71) did not differ significantly between TR patients with and without recurrent episodes. Conclusion: This is the first study to investigate the association between TNF-α polymorphism and the occurrence of TR in humans. TNF-α gene polymorphism (−308G/A) does not seem to be associated with the occurrence or recurrence of TR.

Bilateral Aspergillus endophthalmitis in a patient with chronic lymphocytic leukaemia

Aspergillus species are ubiquitous saprophytic moulds, commonly growing in soil, stored hay, and decaying vegetation. Even though exposure to Aspergillus is universal, infection in humans is uncommon.1 Aspergillus infection of ophthalmic interest usually causes keratitis or orbital cellulitis; Aspergillus endophthalmitis is a relatively rare condition that has a devastating course, with blindness as its usual outcome.2 The clinical diagnosis is difficult and the treatment is disappointing. In most cases, ocular involvement results from spread of aspergillosis infection from others organs and typically occurs in injecting drug users and in patients with immune deficiency of various causes. The leucopenia appears to be a predisposing condition for the occurrence of aspergillosis.3 We report an unusual case of bilateral endogenous Aspergillus endophthalmitis in a patient with chronic lymphocytic leukaemia in the absence of any detectable focus of aspergillosis …

PCR with the aqueous humor, blood leukocytes and vitreous of patients affected by cytomegalovirus retinitis and immune recovery uveitis

Purpose: To detect the cytomegalovirus (CMV) genome by PCR in the aqueous humor, blood leukocytes and vitreous of patients affected by retinitis and immune recovery uveitis (IRU). Methods: A PCR for CMV genome detection was carried out with the aqueous humor, vitreous and blood leukocytes of 54 patients with retinitis, including 25 HIV-infected patients presenting CMV retinitis in different stages (active lesion 6 cases, healed lesion 14 cases and IRU 5 cases), and 29 non-HIV-infected patients (retinitis unrelated to CMV) as negative controls. Results: The CMV genome was detected in the vitreous, aqueous humor and blood leukocytes of 3 out of 6 HIV-infected patients, presenting active lesions in the retina. No CMV genome was detected in the vitreous, aqueous humor and blood leukocytes of the 5 HIV-infected patients presenting IRU. Conclusions: CMV genome detection by PCR in aqueous humor could be used as a specific and highly predictive technique for confirmation of this infection in the retina. The absence of CMV, based on the results of PCR done in clinical samples of the 5 IRU cases, does not confirm the hypothesis of a viral replication in the vitreous body and aqueous humor of these patients.