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Maria Helena Ornellas

Researcher at Rio de Janeiro State University

Publications -  54
Citations -  623

Maria Helena Ornellas is an academic researcher from Rio de Janeiro State University. The author has contributed to research in topics: Biology & Myeloid leukemia. The author has an hindex of 11, co-authored 46 publications receiving 529 citations. Previous affiliations of Maria Helena Ornellas include National Institutes of Health.

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Age-related changes in natural killer cell receptors from childhood through old age

Aline Almeida-Oliveira, +10 more
- 01 Apr 2011 - 
TL;DR: This initial study provides the framework for more focused studies of this subject, which are necessary to determine whether the changing balance of NK receptor expression may influence susceptibility to infectious, inflammatory, and neoplastic diseases.
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Chromosomal alterations associated with evolution from myelodysplastic syndrome to acute myeloid leukemia

Teresa de Souza Fernandez, +4 more
- 01 Oct 2000 - 
TL;DR: It seems that some chromosomal alterations may predict the evolution of the disease and are correlated with short survival, as for example the trisomy of chromosome 8, and might be incorporated in the high risk group in the IPSS.
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Human papillomavirus and penile cancers in Rio de Janeiro, Brazil: HPV typing and clinical features.

Marcos Antonio Mauricio Scheiner, +5 more
- 01 Jul 2008 - 
TL;DR: HPV infection may have contributed to malignant transformation in a large proportion of penile cancer cases but only inguinal metastasis was a prognostic factor for survival in these patients with penile carcinoma.
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Monitoring of gas station attendants exposure to benzene, toluene, xylene (BTX) using three-color chromosome painting

Fábio Santiago, +7 more
- 27 Feb 2014 - 
TL;DR: Monitoring 60 gas station attendants in Brazil found that 16.6% of the studied population showed elevated frequencies of chromosomal abnormalities, which is highly likely to be correlated with their exposure to BTX during their work.
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CDKN2A (p14ARF/p16INK4a) and ATM promoter methylation in patients with impalpable breast lesions

Lucas Delmonico, +9 more
- 01 Oct 2015 - 
TL;DR: The DNA methylation pattern in CDKN2A (p14(ARF)/p16(INK4a)) and in ATM gene promoters are reported and ATM showed the greatest percentage of methylation in DNA from lesions, blood, and saliva, and p16(inks4a) methylation was found in the blood.