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Machado AS, Oliveira JR, de F Lelis D, D Guimarães VH, de Paula AMB, Guimarães ALS, Brandi IV, de Carvalho BMA, da Costa DV, Vieira CR, Pereira UA, de Oliveira Costa T, Andrade JMO, Dos Santos RAS, Santos SHS. Oral angiotensin-(1-7) peptide modulates intestinal microbiota improving metabolic profile in obese mice. Protein Pept Lett 2021; 28:1127-1137. [PMID: 34397321 DOI: 10.2174/0929866528666210816115645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/25/2021] [Accepted: 06/15/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Obesity is a serious health problem which dysregulate Renin-Angiotensin System and intestinal microbiota. OBJECTIVE The present study aimed to evaluate the Angiotensin-(1-7) [ANG-(1-7)] oral formulation effects on obese mice intestinal microbiota. METHODS Mice were divided into four groups: obese and non-obese treated with ANG-(1-7) and obese and non-obese without ANG-(1-7) during four weeks. RESULTS We observed a significant decrease in the fasting plasma glucose, total cholesterol, triglycerides, and Low-density lipoprotein levels and increased High-density lipoprotein in animals treated with ANG-(1-7). The histological analysis showed intestinal villi height reduction in mice treated with ANG-(1-7). Additionally, increased Bacteroidetes and decreased Firmicutes (increased Bacteroidetes/Firmicutes ratio) and Enterobacter cloacae populations were observed in the High-Fat Diet + ANG-(1-7) group. Receptor toll-like 4 (TLR4) intestinal mRNA expression was reduced in the HFD+ ANG-(1-7) group. Finally, the intestinal expression of the neutral amino acid transporter (B0AT1) was increased in animals treated with ANG-(1-7), indicating a possible mechanism associated with tryptophan uptake. CONCLUSION The results of the present study suggest for the first time an interaction between oral ANG-(1-7) and intestinal microbiota modulation.
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Affiliation(s)
- Amanda S Machado
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Montes Claros, Minas Gerais, Brazil
| | - Janaína R Oliveira
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Montes Claros, Minas Gerais, Brazil
| | - Deborah de F Lelis
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Montes Claros, Minas Gerais, Brazil
| | - Victor Hugo D Guimarães
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Montes Claros, Minas Gerais, Brazil
| | - Alfredo M B de Paula
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Montes Claros, Minas Gerais, Brazil
| | - André L S Guimarães
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Montes Claros, Minas Gerais, Brazil
| | - Igor V Brandi
- Institute of Agricultural Sciences. Food Engineering College, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Bruna Mara A de Carvalho
- Institute of Agricultural Sciences. Food Engineering College, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Diego Vicente da Costa
- Institute of Agricultural Sciences. Food Engineering College, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Cláudia Regina Vieira
- Institute of Agricultural Sciences. Food Engineering College, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Ulisses Alves Pereira
- Institute of Agricultural Sciences. Food Engineering College, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Theles de Oliveira Costa
- Institute of Agricultural Sciences. Food Engineering College, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - João M O Andrade
- Institute of Agricultural Sciences. Food Engineering College, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Robson A S Dos Santos
- Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Sérgio H S Santos
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Montes Claros, Minas Gerais, Brazil
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Batista-Jorge GC, Barcala-Jorge AS, Silveira MF, Lelis DF, Andrade JMO, de Paula AMB, Guimarães ALS, Santos SHS. Oral resveratrol supplementation improves Metabolic Syndrome features in obese patients submitted to a lifestyle-changing program. Life Sci 2020; 256:117962. [PMID: 32534040 DOI: 10.1016/j.lfs.2020.117962] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 12/21/2022]
Abstract
AIMS The aim of the present study was to evaluate the oral resveratrol effects associated with diet and physical training changes on anthropometric and biochemical parameters. MAIN METHODS 25 individuals aged from 30 to 60 years old; with Body Mass Index (BMI) ≥ 30 kg/m2 were included in the study. Following the primary evaluation (anthropometric and clinical), the patients were randomly divided into 2 groups: (1) Placebo: Physical activity program + Diet + Placebo; (2) Resveratrol: Physical activity program + Diet + Resveratrol (RVS) (250 mg/day) for three months. Anthropometric and biochemical parameters were evaluated at baseline and after the treatment period. KEY FINDINGS The main findings showed that the resveratrol supplementation improved total cholesterol (TC), High-density Lipoprotein cholesterol (HDL-c), Very-low density Lipoprotein cholesterol (VLDL-c), urea, creatinine and albumin serum levels. SIGNIFICANCE These findings indicate that this polyphenol may be an option to potentiate the beneficial effects induced by dietary and physical activity programs in the Metabolic Syndrome (MetS) treatment.
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Affiliation(s)
- G C Batista-Jorge
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - A S Barcala-Jorge
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - M F Silveira
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - D F Lelis
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - J M O Andrade
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - A M B de Paula
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - A L S Guimarães
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - S H S Santos
- Laboratory of Health Science, Postgraduate Program in Health Sciences, Universidade Estadual de Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil; Institute of Agricultural Sciences, Food Engineering College, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil.
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Cruz VPD, Gonzaga CWO, da Silva VB, da Cruz AFP, da Silva ABT, Capingana DP, Magalhães P, Zaniqueli DA, Guimarães ALS, Cunha RS, Mill JG, Baldo MP. Arterial stiffness in black adults from Angola and Brazil. J Clin Hypertens (Greenwich) 2020; 22:1469-1475. [PMID: 32750210 DOI: 10.1111/jch.13962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/27/2020] [Accepted: 04/30/2020] [Indexed: 11/30/2022]
Abstract
Ethnicity is an important determinant of blood pressure levels, being black individuals affected more than any other ethnic group. Arterial stiffening, an independent risk factor for hypertension, is also influenced by ethnicity. However, whether black individuals from different continents would have different patterns of arterial stiffening is still unknown. Thus, the authors aimed to compare pulse wave velocity (PWV) in black subjects living in Angola and Brazil. A total of 677 black individuals from two independent cross-sectional studies conducted in Brazil and Angola were included in this analysis. Carotid-to-femoral PWV was measured following the same protocols for both studies, as well as clinical and anthropometric variables. Adjusted PWV was higher in Brazilian blacks than in Angolans, regardless of sex (men from Brazil: 10.7 ± 1.8 vs men from Angola: 9.9 ± 1.8 m/s, P < .001; women from Brazil: 10.3 ± 1.5 vs women from Angola: 9.2 ± 1.3 m/s, P < .001). Although the cf-PWV was higher in Brazilian blacks, the age-related increase in cf-PWV was higher in Angolan men compared to Brazilians, but not in women. SBP showed the strongest association with cf-PWV, regardless of sex and country. However, age was associated with cf-PWV in all groups, except in Brazilian men. Our results clearly show a difference in PWV between two black populations, and highlight for sex differences in the hemodynamic parameters that might affect blood pressure levels in these populations.
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Affiliation(s)
- Vitória P D Cruz
- Postgraduate Program in Health Sciences, Montes Claros State University, Montes Claros, Brazil
| | - Carla W O Gonzaga
- Postgraduate Program in Health Sciences, Montes Claros State University, Montes Claros, Brazil
| | - Victor B da Silva
- Postgraduate Program in Health Sciences, Montes Claros State University, Montes Claros, Brazil
| | - André F P da Cruz
- Postgraduate Program in Health Sciences, Montes Claros State University, Montes Claros, Brazil
| | | | - Daniel P Capingana
- Department of Physiology, Faculty of Medicine, University Agostinho Neto, Luanda, Angola
| | - Pedro Magalhães
- Department of Physiology, Faculty of Medicine, University Agostinho Neto, Luanda, Angola
| | - Divanei A Zaniqueli
- Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, Brazil
| | - André L S Guimarães
- Postgraduate Program in Health Sciences, Montes Claros State University, Montes Claros, Brazil
| | - Roberto Sá Cunha
- Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, Brazil
| | - José Geraldo Mill
- Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, Brazil
| | - Marcelo P Baldo
- Postgraduate Program in Health Sciences, Montes Claros State University, Montes Claros, Brazil.,Department of Medicine, Faculdades Integradas Pitágoras, UniFIPMOC, Montes Claros, Brazil.,Department of Pathophysiology, Montes Claros State University, Montes Claros, Brazil
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Machado AS, Oliveira JR, Lelis DDF, de Paula AMB, Guimarães ALS, Andrade JMO, Brandi IV, Santos SHS. Oral Probiotic Bifidobacterium Longum Supplementation Improves Metabolic Parameters and Alters the Expression of the Renin-Angiotensin System in Obese Mice Liver. Biol Res Nurs 2020; 23:100-108. [PMID: 32700545 DOI: 10.1177/1099800420942942] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Obesity and non-alcoholic fatty liver disease (NAFLD) have been increasing at an alarming rate worldwide. Bifidobacterium longum (BL), a common member of the human gut microbiota, has important health benefits through several mechanisms. OBJECTIVES We evaluated the BL supplementation effects on body metabolism and renin-angiotensin components hepatic expression in mice fed a high-fat diet. METHODS Thirty-two male mice were divided into four groups: standard diet + placebo (ST), standard diet + Bifidobacterium longum (ST + BL), high-fat diet + placebo (HFD) and high-fat diet + Bifidobacterium longum (HFD + BL). Following the obesity induction period, the ST + BL and HFD + BL groups were supplemented with Bifidobacterium longum for 4 weeks. Then, body, biochemical, histological and molecular parameters were evaluated. RESULTS HFD + BL mice had a significant decrease in adipose tissue mass and blood glucose levels, as well as a significant reduction in blood glucose during an intraperitoneal glucose tolerance test. The treatment also resulted in reduced levels of total cholesterol and hepatic fat accumulation. Moreover, we observed an increase in angiotensin converting enzyme 2 (ACE2) and Mas receptor (MASR) expression levels in BL-treated obese mice. CONCLUSIONS These data demonstrate that BL may have the potential to prevent obesity and NAFLD by modulating the mRNA expression of renin-angiotensin system components.
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Affiliation(s)
- Amanda S Machado
- Laboratory of Health Science, Postgraduation Program in Health Sciences, 153595Universidade Estadual de Montes Claros (UNIMONTES), Montes Claros, Minas Gerais, Brazil
| | - Janaína R Oliveira
- Laboratory of Health Science, Postgraduation Program in Health Sciences, 153595Universidade Estadual de Montes Claros (UNIMONTES), Montes Claros, Minas Gerais, Brazil
| | - Deborah de F Lelis
- Laboratory of Health Science, Postgraduation Program in Health Sciences, 153595Universidade Estadual de Montes Claros (UNIMONTES), Montes Claros, Minas Gerais, Brazil
| | - Alfredo M B de Paula
- Laboratory of Health Science, Postgraduation Program in Health Sciences, 153595Universidade Estadual de Montes Claros (UNIMONTES), Montes Claros, Minas Gerais, Brazil
| | - André L S Guimarães
- Laboratory of Health Science, Postgraduation Program in Health Sciences, 153595Universidade Estadual de Montes Claros (UNIMONTES), Montes Claros, Minas Gerais, Brazil
| | - João M O Andrade
- Laboratory of Health Science, Postgraduation Program in Health Sciences, 153595Universidade Estadual de Montes Claros (UNIMONTES), Montes Claros, Minas Gerais, Brazil
| | - Igor V Brandi
- Institute of Agricultural Sciences, Food Engineering, 28114Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Sérgio H S Santos
- Laboratory of Health Science, Postgraduation Program in Health Sciences, 153595Universidade Estadual de Montes Claros (UNIMONTES), Montes Claros, Minas Gerais, Brazil.,Institute of Agricultural Sciences, Food Engineering, 28114Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
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Kussano NR, Leme LO, Guimarães ALS, Franco MM, Dode MAN. Molecular markers for oocyte competence in bovine cumulus cells. Theriogenology 2015; 85:1167-76. [PMID: 26792377 DOI: 10.1016/j.theriogenology.2015.11.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 11/28/2015] [Accepted: 11/30/2015] [Indexed: 12/26/2022]
Abstract
This study aimed to quantify the expression of candidate genes in cumulus cells (CCs) from cumulus-oocyte complexes (COCs) with high and low potential for in vitro development up to the blastocyst stage. First, the effects of individual culture and biopsy on embryo development were evaluated. Individuals cultured using the well of the well system were compared with individuals cultured in 20 μL droplets (microdroplets) and those cultured in groups (control). Blastocyst rates were lower for the individual culture systems (P < 0.05; well of the well = 17.9%, n = 95; microdrop = 26.3%, n = 95) than for the control group (45.0%, n = 209). Second, the effects of biopsy on embryo production were compared between the control and microdroplet cultures, and no effects (P > 0.05) were observed for either group. Finally, the expression profiles of glypican 4 (GPC4), IGF4-binding protein, follicle-stimulating hormonereceptor, growth hormone receptor, epidermal growth factor receptor, fibroblast growth factor 11, solute carrier family 2 member 1, solute carrier family 2 member 3,sprouty homolog 1, versican, and keratin protein 8 in CCs obtained by biopsy were quantified by real-time polymerase chain reaction. Cumulus cells were categorized on the basis of the fates of the COCs: expanded blastocyst, cleaved and arrested, and uncleaved. The GPC4 gene was overexpressed (P = 0.007) in CCs from oocytes that formed embryos compared with those that produced cleaved and arrested embryos. We concluded that individual culture reduced blastocyst production; however, biopsy did not affect embryo development. The profile of GPC4 expression can be used as a marker to distinguish COCs with potential for embryo development from those with limited developmental potential.
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Affiliation(s)
- N R Kussano
- School of Veterinary Medicine, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - L O Leme
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília, Distrito Federal, Brazil
| | - A L S Guimarães
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília, Distrito Federal, Brazil
| | - M M Franco
- School of Veterinary Medicine, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil; Laboratory of Animal Reproduction, Embrapa-Genetic Resources and Biotechnology, Brasília, Distrito Federal, Brazil
| | - M A N Dode
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília, Distrito Federal, Brazil; Laboratory of Animal Reproduction, Embrapa-Genetic Resources and Biotechnology, Brasília, Distrito Federal, Brazil.
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Brito JAR, Gomes CC, Guimarães ALS, Campos K, Gomez RS. Relationship between microRNA expression levels and histopathological features of dysplasia in oral leukoplakia. J Oral Pathol Med 2013; 43:211-6. [PMID: 24020903 DOI: 10.1111/jop.12112] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2013] [Indexed: 12/19/2022]
Abstract
BACKGROUND Increased expression of microRNAs (miRNAs), miR-21, miR-345, and miR-181b has been demonstrated in oral leukoplakia (OL) that progresses to oral squamous cell carcinoma (OSCC), suggesting a miRNA signature with potential prognostic value. On the basis of these findings, this pilot study aimed to investigate the cytological and histopathological features that are used to grade oral dysplasia and determine associations with the expression of these 3 potentially cancer-related miRNAs. We also compared the expression levels of these miRNAs in OL with normal oral mucosa and OSCC. METHODS We evaluated miRNA expression by qPCR in 22 samples of OL demonstrating different grades of dysplasia, as well as 17 cases of OSCC, and 6 samples of normal oral mucosa. We associated the miRNAs expression profiles with cytological and histopathological features of OL. RESULTS OSCC cases showed increased expression of all 3 miRNAs when compared with OL and normal oral mucosa. Increased expression of miR-21 was also observed in OL when compared with normal oral mucosa. We found a higher expression of miR-21 and miR-181b in OL that presented with an increased number of mitotic figures, increased nuclear/cytoplasmic ratio, or hyperchromasia. Increased expression of miR-21 was also detected in OL with abnormally superficial mitosis. Higher expression of miR-345 was observed in OL with an increased number and size of nucleoli or increased nuclear/cytoplasmic ratio. CONCLUSIONS In conclusion, the present study shows that some cytological and histopathological parameters used to grade dysplasia are associated with altered miRNA expression.
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Affiliation(s)
- João A R Brito
- Department of Oral Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Poswar FO, Fraga CAC, Farias LC, Feltenberger JD, Cruz VPD, Santos SHS, Silveira CM, de Paula AMB, Guimarães ALS. Immunohistochemical analysis of TIMP-3 and MMP-9 in actinic keratosis, squamous cell carcinoma of the skin, and basal cell carcinoma. Pathol Res Pract 2013; 209:705-9. [PMID: 24011615 DOI: 10.1016/j.prp.2013.08.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 07/18/2013] [Accepted: 08/05/2013] [Indexed: 12/27/2022]
Abstract
The expression of metalloproteinases and their inhibitors has been related to different invasive and metastatic potentials in cancer. This study aims to investigate the immunohistochemical expression of TIMP-3 and MMP-9 in samples of basal cell carcinoma (BCC), squamous cell carcinoma of the skin (SCC), and actinic keratosis (AK). Immunohistochemistry was performed to evaluate the expression of TIMP-3 and MMP-9 in samples of BCC (n=22), SCC (n=10), and AK (n=15). Ten fields of both tumor parenchyma and tumor stroma were photographed and counted in image software. The ratio of positive cells to total cells was used to quantify the staining. A higher expression of MMP-9 was found in tumor stroma of SCC compared to BCC and AK. No significant differences in TIMP-3 expression were observed among the groups. Considering the well-described differences between these neoplasms, these results provide additional evidence of the role of MMP-9 in tumor invasiveness of keratinocyte-derived tumors.
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Affiliation(s)
- Fabiano O Poswar
- Department of Dentistry, Universidade Estadual de Montes Claros, Minas Gerais, Brazil; Department of Medicine, Universidade Estadual de Montes Claros, Minas Gerais, Brazil
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Fonseca-Silva T, Santos CCO, Alves LR, Dias LC, Brito M, De Paula AMB, Guimarães ALS. Detection and quantification of mast cell, vascular endothelial growth factor, and microvessel density in human inflammatory periapical cysts and granulomas. Int Endod J 2012; 45:859-64. [PMID: 22486765 DOI: 10.1111/j.1365-2591.2012.02043.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM To identify and quantify mast cell (MC), vascular endothelial growth factor (VEGF) expression and microvessel density (MVD) in human periapical cysts and granulomas. METHODOLOGY Archived samples of cysts (n = 40) and granulomas (n = 28) were sectioned and stained with toluidine blue. MCs were identified and counted. Immunohistochemical reactions were employed to evaluate the tissue expression of VEGF and vessels. MVD was estimated by determining the areas of tissue labelled with CD31 antibody. The data were analysed using the Mann-Whitney test (P < 0.05). RESULTS MCs were observed in the peripheral regions of both lesion types, whilst VEGF and MVD were distributed in the stroma. The presence of MCs was higher in cysts than in granulomas (P < 0.05). VEGF and MVD expression were similar in these lesions. CONCLUSIONS The highest number of MCs was observed in cysts. Moreover, the identification of VEGF and MVD was consistent with the immune mechanisms involved in the lesions.
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Affiliation(s)
- T Fonseca-Silva
- Department of Dentistry, State University of Montes Claros, Montes Claros, MG, Brazil
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Souza LR, Fonseca-Silva T, Pereira CS, Santos EP, Lima LC, Carvalho HA, Gomez RS, Guimarães ALS, De Paula AMB. Immunohistochemical analysis of p53, APE1, hMSH2 and ERCC1 proteins in actinic cheilitis and lip squamous cell carcinoma. Histopathology 2011; 58:352-60. [PMID: 21323960 DOI: 10.1111/j.1365-2559.2011.03756.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
AIMS This study has compared the tissue expression of the p53 tumour suppressor protein and DNA repair proteins APE1, hMSH2 and ERCC1 in normal, dysplastic and malignant lip epithelium. METHODS AND RESULTS Morphological analysis and immunohistochemistry were performed on archived specimens of normal lip mucosa (n=15), actinic cheilitis (AC) (n=30), and lip squamous cell carcinoma (LSCC) (n=27). AC samples were classified morphologically according to the severity of epithelial dysplasia and risk of malignant transformation. LSCC samples were morphologically staged according to WHO and invasive front grading (IFG) criteria. Differences between groups and morphological stages were determined by bivariate statistical analysis. Progressive increases in the percentage of epithelial cells expressing p53 and APE1 were associated with increases in morphological malignancy from normal lip mucosa to LSCC. There was also a significant reduction in epithelial cells expressing hMSH2 and ERCC1 proteins in the AC and LSCC groups. A higher percentage of malignant cells expressing APE1 was found in samples with an aggressive morphological IFG grade. CONCLUSIONS Our data showed that epithelial cells from premalignant to malignant lip disease exhibited changes in the expression of p53, APE1, hMSH2 and ERCC1 proteins; these molecular change might contribute to lip carcinogenesis.
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Affiliation(s)
- Ludmilla R Souza
- Health Science Programme, State University of Montes Claros, Montes Claros, MG, Brazil
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Souza LR, Fonseca-Silva T, Santos CCO, Oliveira MVM, Corrêa-Oliveira R, Guimarães ALS, De Paula AMB. Association of mast cell, eosinophil leucocyte and microvessel densities in actinic cheilitis and lip squamous cell carcinoma. Histopathology 2010; 57:796-805. [DOI: 10.1111/j.1365-2559.2010.03721.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Martelli H, Santos SMC, Guimarães ALS, Paranaíba LMR, Laranjeira AL, Coletta RD, Bonan PRF. Idiopathic gingival fibromatosis: description of two cases. Minerva Stomatol 2010; 59:143-148. [PMID: 20357741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Gingival fibromatosis is an enlargement localized or generalized of the gingival tissue characterized by an expansion and accumulation of the connective tissue, predominantly type I collagen, with occasional presence of increased number of cells, supposed fibroblastic proliferation. Gingival fibromatosis can be induced as a side effect of systemic drugs, such as phenytoin, cyclosporin, and nifedipine, or due to hereditary factors. However, in some cases, the gingival overgrowth is idiopathic. This paper reports two cases of idiopathic gingival fibromatosis and discusses the diagnosis, histopathological features, treatment and immunohistochemical evaluation of myofibroblasts of this condition. The tissues removed were fixed in formalin, and sections used for hematoxylin and eosin and Masson tricromic stain. To determine the presence of myofibroblasts, we performed immunohistochemistry against a-SMA protein. Histological examination revealed epithelial hyperplasia with long rete pegs and increase in the dense fibrous connective tissue. The Masson tricromic stain revealed wide bundles of collagen strongly stained. It was showed negative labeling to a-SMA. These results strongly suggest that myofibroblasts are not involved in gingival overgrowth in the cases of IGF reported. Future studies will be necessary to determine the pathogenesis of idiopathic gingival fibromatosis.
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Affiliation(s)
- H Martelli
- Stomatology Clinic, Dental School, State University of Monte Claros, Monte Claros, Minas Geiras, Brazil
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De Paula AMB, Souza LR, Farias LC, Corrêa GTB, Fraga CAC, Eleutério NB, Silveira ACO, Santos FBG, Haikal DS, Guimarães ALS, Gomez RS. Analysis of 724 cases of primary head and neck squamous cell carcinoma (HNSCC) with a focus on young patients and p53 immunolocalization. Oral Oncol 2009; 45:777-82. [PMID: 19359212 DOI: 10.1016/j.oraloncology.2008.11.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2008] [Revised: 11/26/2008] [Accepted: 11/27/2008] [Indexed: 11/17/2022]
Abstract
This study evaluated 724 primary head and neck squamous cell carcinoma (HNSCC) in young and old patients, with regard to clinical profile and immunohistochemical expression of p53 protein. Associations among age, epidemiological and clinicopathological parameters, and survival analysis were evaluated. HNSCC in young people occurred in 14.5% (median age 40.7years; male-to-female ratio 5.9:1). A statistical association was demonstrated between age and family history of cancer, and between age and anatomical site. Among older patients, a higher presence of disease was noted in posterior sites. Expression of p53 was found in 71.7% of the samples and a higher expression was noted in lesions of young patients. Survival analysis showed that the age parameter is not a reliable prognostic factor for HNSCC. Among young patients, cervical metastasis was associated with worse survival. The presence of a family history of cancer in young patients could indicate genetic susceptibility and molecular disturbances in the p53 pathway in HNSCC of young and older patients seem to be distinct.
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Affiliation(s)
- A M B De Paula
- Department of Dentistry, State University of Montes Claros, Brazil.
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Massote PD, Pinheiro ACN, Fonseca CG, Prado MAM, Guimarães ALS, Massensini AR, Gomez MV. Protective effect of retinal ischemia by blockers of voltage-dependent calcium channels and intracellular calcium stores. Cell Mol Neurobiol 2008; 28:847-56. [PMID: 18196453 DOI: 10.1007/s10571-007-9243-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Accepted: 11/17/2007] [Indexed: 01/13/2023]
Abstract
In the present study, the neuroprotective effect of blockers of voltage-dependent calcium channels (VDCC) and intracellular calcium stores on retinal ischemic damage induced by oxygen deprivation-low glucose insult (ODLG) was investigated. Retinal damage induced by ODLG was dependent on the calcium concentration in the perfusion medium. When incubated in medium containing 2.4 mM CaCl(2), cell death in ischemic retinal slices treated with blockers of VDCC, omega-conotoxin GVIA (1.0 microM), omega-conotoxin MVIIC (100 nM) and nifedipine (1.0 microM), was reduced to 62 +/- 2.3, 46 +/- 4.3 and 47 +/- 3.9%, respectively. In the presence of blockers of intracellular calcium stores, dantrolene (100 microM) and 2-APB (100 microM), the cell death was reduced to 46 +/- 3.2 and 55 +/- 2.9%, respectively. Tetrodotoxin (1.0 microM), reducing the extent of the membrane depolarization reduces the magnitude of calcium influx trough VDCC causing a reduction of the cell death to 55 +/- 4.3. Lactate dehydrogenase content of untreated ischemic retinal slices was reduced by 37% and treatment of ischemic slices with BAPTA-AM (100 microM) or 2-APB (100 microM) abolished the leakage of LDH. Dantrolene (100 microM) and nifedipine (1.0 microM) partially blocked the induced reduction on the LDH content of retinal ischemic slices. Histological analysis of retinal ischemic slices showed 40% reduction of ganglion cells that was prevented by BAPTA-AM or dantrolene. 2-APB partially blocked this reduction whilst nifedipine had no effect, p > 0.95. Conclusion Blockers of VDCC and intracellular calcium-sensitive receptors exert neuroprotective effect on retinal ischemia.
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Gomes CC, Drummond SN, Guimarães ALS, Andrade CI, Mesquita RA, Gomez RS. P21/ WAF1 and cyclin D1 variants and oral squamous cell carcinoma. J Oral Pathol Med 2007; 37:151-6. [DOI: 10.1111/j.1600-0714.2007.00604.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Correia-Silva JDF, Victória JMN, Guimarães ALS, Salomão UE, de Abreu MHNG, Bittencourt H, Gomez RS. Cytomegalovirus shedding in the oral cavity of allogeneic haematopoietic stem cell transplant patients. Oral Dis 2007; 13:163-9. [PMID: 17305617 DOI: 10.1111/j.1601-0825.2006.01240.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE This study was designed to investigate the effect of allogeneic haematopoietic stem cell transplantation (HSCT) on cytomegalovirus (CMV) shedding in the saliva by nested polymerase chain reaction (nested PCR) and its impact on patient survival. PATIENTS AND METHODS One hundred and twenty-four HSCT patients and 124 healthy volunteers were included in the study. Oral swabs were taken before, after 100 days and 1 year of HSCT at the buccal mucosa. Nested PCR was used to detect CMV in the saliva. Time of death after HSCT was displayed, by means of the Kaplan-Meier method, for the following parameters: age and gender of the patient, donor gender, primary disease, stem cell source, platelet number, chronic graft vs host disease (cGVHD) of salivary glands and oral mucosa, and oral CMV shedding. Cox proportional hazards model was used for multivariate survival analysis. RESULTS While none of the individuals in the control group showed positive swabs for CMV, the frequency of positive CMV oral swabs in patients at day + 100 after HSCT (45.2%) was statistically higher than before (7.2%) and 1 year after HSCT (17.5%). The presence of CMV was not associated with cGVHD and did not have any impact on post-transplant survival. CONCLUSIONS The present study shows that oral CMV shedding occurs after HSCT, especially at day +100 post-transplant. Identification of CMV in the saliva might be important for the early diagnosis of CMV infection in allo-HSTC.
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Affiliation(s)
- J de F Correia-Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, CEP 31270-901 Belo Horizonte, MG, Brazil
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Abstract
This is the first description of solitary phaeohyphomycosis affecting the mucosal surface. The lesion developed in the inferior lip of a 57-year-old woman. After surgical resection, histopathological examination evidenced characteristic brownish fungal structures within granulomatous-purulent inflammation. Amplification and sequencing of rDNA obtained from paraffin-embedded tissue identified Alternaria species, as the causative agent.
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Affiliation(s)
- S V Cardoso
- Oral Diagnosis Unit, State University of Montes Claros, Montes Claros, Brazil
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Guimarães ALS, de Sá AR, Victória JMN, Correia-Silva JF, Pessoa PS, Diniz MG, Gomez RS. Association of interleukin-1? polymorphism with recurrent aphthous stomatitis in Brazilian individuals. Oral Dis 2006; 12:580-3. [PMID: 17054771 DOI: 10.1111/j.1601-0825.2006.01243.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Recurrent aphthous stomatitis (RAS) is characterized by recurrent episodes of oral ulceration in an otherwise healthy individual. Some reports in the literature indicate that RAS may have immunological, psychological, genetic and microbiological bases. The purpose of the present study was to investigate the possible association between interleukin-1beta (IL-1beta) +3954 (C/T) genetic polymorphism and RAS in a sample of Brazilian patients. SUBJECTS AND METHODS Sixty-two consecutive subjects affected by minor and major forms of RAS and 62 healthy volunteers were genotyped at IL-1beta (+3954). The chi-squared test was used for statistical analysis. RESULTS A significant increase in the high production of IL-1beta genotype CT was observed in the group with RAS (P = 0.01). After stratifying RAS patients according to the mean number of lesions per episode, a significant difference was only observed between patients with >or=3 lesions in each episode and control. CONCLUSION There is an increased frequency of polymorphism associated with high IL-1beta production in RAS patients.
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Affiliation(s)
- A L S Guimarães
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Abstract
OBJECTIVE Investigate the frequency of herpes simplex virus type 1 (HSV-1) reactivation in the oral cavity of seropositive patients with previous history of recurrent herpes labialis (recrudescent group) compared with those without any history of recrudescent lesions (asymptomatic HSV-1 infection). In addition, the relation between recrudescence and the presence of the virus in the saliva was assessed. MATERIALS AND METHODS Fourteen individuals with previous history of herpes labialis (recrudescent group) and 11 HSV-1 seropositive asymptomatic volunteers were included in the study. Swabs were performed periodically in all subjects and the presence of HSV-1 DNA was identified by nested PCR. RESULTS All the 25 subjects enrolled in the study, revealed at least one positive swab for HSV-1. The frequency of HSV-1 positivity in the group with recrudescent herpes labialis was not statistically different from the other group. Ten subjects of the recrudescent group presented with herpes labialis at least once during the study. CONCLUSIONS HSV-1 shedding in the oral cavity occurs independently of herpes labialis recrudescence.
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Affiliation(s)
- L M da Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Gomez RS, Pimenta FJGS, Guimarães ALS, Souza LN, Salomão UE, de Almeida HC, Vaz RR. Effect of bone marrow transplantation on the immunolocalization of p53, hMSH2, and hMLH1 proteins on oral mucosa. Oral Dis 2004; 10:207-11. [PMID: 15196141 DOI: 10.1111/j.1601-0825.2004.01026.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Considering that hMSH2, hMLH1 and p53 are important in maintaining genomic stability of the oral mucosa epithelium, the purpose of the present study was to investigate the immunolocalization of these proteins in the epithelium of the oral mucosa of patients submitted to bone marrow transplantation (BMT) compared with controls. MATERIALS AND METHODS Twenty-one samples of lip biopsies from BMT recipients were retrieved. Twenty samples of normal lower labial mucosa associated with mucocele in non-transplanted patients were included as control group. The streptavidin-biotin complex stain was used to detect the human DNA mismatch repair proteins hMSH2, hMLH1 and p53 protein. RESULTS The main findings demonstrated that the mean number of suprabasal epithelial cells positive for MSH2 was statistically higher than the control group. The immunostaining of hMLH1 and p53 at the basal and suprabasal epithelial layers were statistically higher in the oral labial mucosa of the BMT patients compared with controls. CONCLUSION The present study shows that oral epithelial cells of BMT patients show increased immunolocalization of the DNA repair related proteins.
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Affiliation(s)
- R S Gomez
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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