ORCID Profile
0000-0001-8770-8009
Current Organisations
National Chung Hsing University
,
Faculdade de Ciências Médicas de Minas Gerais
,
Universidade Federal de Minas Gerais
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Publications
Efficacy of scaffold‐mediated localized chemotherapy in cancer: A systematic review of current research
Publisher: Wiley
Date: 03-03-2020
DOI: 10.1111/JOP.12994
Abstract: To assess the efficacy of scaffold-mediated localized chemotherapy in cancer. Databases including PubMed, Cochrane Library, and SCOPUS were searched for articles reporting the use of scaffold-mediated localized drug delivery in cancer. Essential data including scaffold fabrication material and methods, drug dosage and release duration and its effect on the cancer cells were extracted. 15 articles out of 60 screened, fulfilled the eligibility criteria. Among the 15 studies, 5 studies included only cell lines and 2 studies were on mouse models, while 8 studies involved a combination of cell lines and mouse models. Scaffold materials included both synthetic polymers such as poly-lactide, polycaprolactone and natural materials including d-periosteum and human micro-fragmented adipose tissueA wide number of other variables included the fabrication procedure, drugs used, and the methods used to assess the effects on cancer. As a result, it was not possible to make any direct comparison of the efficacy of the therapeutic strategy used in each of these studies. Irrespective of the many variables, a common consensus in all the included studies was that scaffold mediated localized drug delivery effectively reduced cancer cell viability by increasing drug bioavailability to the target tissue, while its localized effect reduced the risk of systemic toxicity.
Global burden of 369 diseases and injuries in 204 countries and territories, 1990–2019: a systematic analysis for the Global Burden of Disease Study 2019
Publisher: Elsevier BV
Date: 10-2020
HRPT2 gene alterations in ossifying fibroma of the jaws
Publisher: Elsevier BV
Date: 08-2006
DOI: 10.1016/J.ORALONCOLOGY.2005.11.019
Abstract: Ossifying fibroma (OF) is a benign neoplasm related to bone characterized by a progressive enlargement of the affected jaw. Recently, the candidate tumor suppressor gene HRPT2 was identified and alterations in this gene were related with the Hyperparathyroidism-jaw tumor syndrome that is characterized by parathyroid adenoma or carcinoma, fibro-osseous lesions (mainly OF) of the jaws, and renal lesions. The purpose of the present study was to evaluate the HRPT2 gene in OF. Tumour and blood s les were obtained from 3 patients with OF and one with juvenile ossifying fibroma (JOF). The results demonstrated three novel mutations in two out of three genotyped OF's. Interestingly, one of these patients showed a germ-line mutation after blood analysis. RT-PCR lification was performed to analyze HRPT2 mRNA expression and only wild-type HRPT2 transcript was found in all tumours. Investigation of the parafibromin protein by immunohistochemistry showed a similar pattern of immunolocalization with strong nuclear and cytoplasmic staining in all cases. In conclusion, the present study shows for the first time mutations of HRPT2 gene in OF and suggests that OF may arise due to haploinsufficiency of the HRPT2 gene.
Time and space in biogeography: response to Parenti & Ebach (2013)
Publisher: Wiley
Date: 21-06-2013
DOI: 10.1111/JBI.12166
Familial hyperparathyroidism: surgical outcome after 30 years of follow-up in three families with germline HRPT2 mutations
Publisher: Elsevier BV
Date: 05-2008
DOI: 10.1016/J.SURG.2007.12.012
Abstract: Familial forms of hyperparathyroidism are responsible for approximately 10% of the cases of primary hyperparathyroidism, and their management is different from the sporadic forms. Our objective was to study the gene sequence and expression of HRPT2 and clinical outcome regarding recurrence or persistence rates in three Brazilian kindreds with familial hyperparathyroidism after up to 30 years of follow-up. Clinical and biochemical data, direct sequencing of germline DNA of the HRPT2 gene, and analysis of parafibromin expression (HRPT2 gene product) using RT-PCR and immunohistochemistry of resected parathyroid neoplasms were performed. Affected members of kindred A were found to carry a novel, germline, nonsense mutation in exon 1 (c.96G>A W32X) of HRPT2. Six of seven patients who have undergone less than total parathyroidectomy recurred after up to 30 years of follow-up. An unrelated affected patient from kindred B had a germline mutation in exon 7 (c.686delGAGT), and the disease recurred with several pulmonary metastases after 5 years follow-up. The affected member of kindred C also had a previously described mutation in exon 7 (c.679delAG) and the disease recurred after 10 years of follow-up. All parathyroid neoplasms from these families had diffuse loss of expression by immunohistochemistry. An unacceptable recurrence ersistence rate (80%) associated with increasingly difficult re-operations and risk of parathyroid carcinoma in the setting of germline mutations of HRPT2 gene with familial hyperparathyroidism suggest that a more aggressive operative approach should be undertaken in these patients. Parafibromin immunohistochemistry may serve as a cost-effective screen for HRPT2-related aggressive parathyroid disease.
Global, Regional, and National Cancer Incidence, Mortality, Years of Life Lost, Years Lived With Disability, and Disability-Adjusted Life-Years for 29 Cancer Groups, 1990 to 2017
Publisher: American Medical Association (AMA)
Date: 12-2019
Biogeography of the Indo-Australian Archipelago
Publisher: Annual Reviews
Date: 12-2011
DOI: 10.1146/ANNUREV-ECOLSYS-102710-145001
Abstract: The extraordinary species richness and endemism of the Indo-Australian Archipelago (IAA) exists in one of the most geologically dynamic regions of the planet. The provenance of its biota has been debated, particularly in the area known as Wallacea. Application of molecular genetic approaches and a better understanding of the region's complex geology have stimulated much recent biogeographic work in the IAA. We review molecular phylogenetic and phylogeographic studies in light of current geological evidence. Present distribution patterns of species have been shaped largely by pre-Pleistocene dispersal and vicariance events, whereas more recent changes in the connectivity of islands within the Archipelago have influenced the partitioning of intraspecific variation. Many genetic studies have uncovered cryptic species with restricted distributions. We discuss the conservation significance of the region and highlight the need for cross-taxon comparative studies using newly developed analytical approaches well suited to the challenges of historical inference in this region.
Differential diagnosis and clinical management of periapical radiopaque/hyperdense jaw lesions
Publisher: FapUNIFESP (SciELO)
Date: 2017
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Related Funding Activities
No related grants have been discovered for Ricardo Gomez.