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Brasilia, Brazil

Daher M.,University of Brasilia | Saito R.B.,University of Brasilia | Barra G.B.,Sabin Laboratory | Goveia C.S.,University of Brasilia | And 2 more authors.
Anaesthesia | Year: 2012

Summary We investigated whether genetic variations of the beta-2 adrenergic receptor (ADRB2) modulate the haemodynamic response following spinal anaesthesia for caesarean delivery. We focused on the effects of haplotypes formed by combinations of the Arg16Gly and Gln27Glu polymorphisms. Clinical data from 143 healthy parturients were collected. Only the ArgGln haplotype appeared to influence the risk of hypotension, most probably through a recessive mode of inheritance (p = 0.027). Therefore, patients were grouped according to ArgGln homozygosity in two groups: presence of one or no copies of the haplotype (n = 120) or two copies of the haplotype (n = 23). Both groups presented similar baseline characteristics. Comparatively, patients homozygous for the ArgGln haplotype presented consistently higher blood pressure levels throughout the evaluation period (p = 0.001 for systolic arterial pressure variation from baseline). In conclusion, our results demonstrate that haplotype variations of the the ADRB2 modulate the haemodynamic response following spinal anaesthesia for caesarean delivery. © Anaesthesia © 2012 The Association of Anaesthetists of Great Britain and Ireland. Source


Marques A.E.M.,University of Brasilia | Barra G.B.,Sabin Laboratory | de Resende Oyama C.N.,University of Brasilia | Guerra E.N.S.,University of Brasilia
Journal of Oral Pathology and Medicine | Year: 2015

Background: Although the natural history of cervical and oral infection by human papillomavirus (HPV) has been intensely investigated, the ability of this virus to infect oral and genital mucosae in the same individual and its potential of communicability are still unclear. Objectives: This study aimed at assessing the presence of oropharyngeal HPV infection in women with cervical lesions and in their current sexual partners in a Brazilian population. Methods: It included a total of 65 patients, 43 women and 22 male partners. Medical history and the sociobehavioral profile were assessed through interviews that included the association of oropharyngeal HPV and the sexual behavior of patients, and also extra and intra-oral examinations were performed. Brushing was used to collect cells from the oropharyngeal mucosa. HPV DNA was checked through nested PCR with primers PGMY09/11 and GP5+/6+, and Pappilocheck to genotyping. Results: Oropharyngeal HPV infection was detected in four of 65 (6.15%) cases, with one of 43 (2.3%) women, and three of 22 (13.6%) male partners. Clinically no patient showed HPV-related oral lesions. Pappilocheck assay showed the absence of HPV genotype commonly found in cervical mucosa. Moreover, there was no correlation between the presence of oropharyngeal HPV and sexual behavior risk factors. Conclusions: The results suggest that the presence of cervical lesions does not lead to HPV oropharyngeal infection. It also highlights the low rate of HPV infection in the oropharyngeal mucosa of women with cervical lesions and their partners in a researched sample. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. Source


Zaconeta A.M.,University of Brasilia | Amato A.A.,University of Brasilia | Barra G.B.,Sabin Laboratory | Da Motta L.D.C.,University of Brasilia | And 3 more authors.
Journal of Clinical Endocrinology and Metabolism | Year: 2015

Context: CRH participates in the hypothalamic-pituitary-adrenal axis and in neural circuits involved in the pathophysiology of depression. During pregnancy, the placenta produces large amounts of CRH, and production ceases abruptly after delivery. The relationship between CRH in the cerebrospinal fluid (CSF) during pregnancy and peripartum mood disorders has not been investigated. Objectives: The objectives were to determine whether there are differences in CSF CRH concentrations of pregnant and nonpregnant women and whether CSF CRH concentrations in late pregnancy are associated with the presence of depressive symptoms during pregnancy and in the early postpartum period. Design: This was a prospective cohort study conducted from January to April, 2011. Setting: The study was conducted in one public and two private hospitals in Brasilia, Brazil. Patients: Patients included 107 healthy pregnant women who underwent elective cesarean delivery and 22 nonpregnant healthy women who underwent spinal anesthesia for elective surgical sterilization. Intervention: CRH in CSF was measured in pregnant and nonpregnant women by ELISA. Main Outcome Measure: The association between CSF CRH concentration at delivery and maternal depression assessed before cesarean section and postpartum (4 to 8 wk) with the Edinburgh Postnatal Depression Scale (EPDS), with a cutoff of ≥ 13. Results: CRH concentration in the CSF was significantly higher in pregnant (4.1 ± 0.51 log CRH) than in nonpregnant women (3.6 ± 0.26 log CRH) (P < .001). Depressive symptoms starting after delivery occurred in 5.6% of women. CRH concentration in CSF was not different between women without depressive symptoms and women showing such symptoms during pregnancy or in the postpartum period. Conclusion: CRH concentration in the CSF was higher in pregnant women than in nonpregnant women. However, in this sample, CSF CRH in late pregnancy was not associated with new-onset depressive symptoms in the early postpartum period. Copyright © 2015 by the Endocrine Society. Source


Rabelo F.d.S.,University of Brasilia | da Mota L.M.H.,University of Brasilia | Lima R.A.C.,University of Brasilia | Lima F.A.C.,University of Brasilia | And 3 more authors.
Autoimmunity Reviews | Year: 2010

The Wnt signaling pathways play a key role in cell renewal, and there are two such pathways. In patients with rheumatoid arthritis (RA), the synovial membrane expresses genes such as Wnt and Fz at higher levels than those observed in patients without RA. The Wnt proteins are glycoproteins that bind to receptors of the Fz family on the cell surface. The Wnt/Fz complex controls tissue formation during embryogenesis, as well as throughout the process of limb development and joint formation. Recent studies have suggested that this signaling pathway plays a role in the pathophysiology of RA. Greater knowledge of the role of the Wnt signaling pathway in RA could improve understanding of the differences in RA clinical presentation and prognosis. Further studies should also focus on Wnt family members as molecular targets in the treatment of RA. © 2009 Elsevier B.V. All rights reserved. Source


Maia L.B.,Hospital Universitario Of Brasilia Hub | Maia L.B.,Hospital Universitaliario Of Brasilia | Marinho L.C.,Hospital Universitario Of Brasilia Hub | Paes Barbosa T.W.,Hospital Universitario Of Brasilia Hub | And 5 more authors.
Diagnostic Cytopathology | Year: 2014

Anal intraepithelial neoplasia (AIN) is associated with HPV infection and can be detected by cytological screening. While conventional exfoliative cytology (CC) is a low-cost and nonaggressive method, liquid-based cytology (LBC) tends to give clearer readings. Although studies of the efficacy of anal cancer screening methods would be of great importance for groups at high risk for AIN, few such studies have been conducted. The aim of the present study was to assess the concordance of CC and LBC in diagnosing anal pre-neoplastic lesions, and to compare cytological results with anoscopy, histopathological, and molecular biology findings. Comparative study involving 33 HIV-positive patients, who underwent anoscopy and biopsy of suspected lesions. Concordance between the two cytology methods was calculated, as were the associations between cytology results and findings from other screening methods. A total of 54.5% of cases were considered AIN-negative by CC and LBC, and concordance between the two methods was statistically significant (P < 0.05). Anoscopy was negative in 15 of the 18 CC- and LBC-negative cases. CC identified 75% of patients with positive biopsy, while LBC identified 85.71% of these patients. Molecular biology results showed that patients with LSIL tested positive for the highest number of HPV subtypes. The associations between positive biopsy and high grade HPV, HPV 16, and multiple HPV infections were not statistically significant. Conventional and liquid-based cytology are equally effective in screening for anal preneoplastic lesions. © 2014 Wiley Periodicals, Inc. Source

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