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Pinheiro GFA, Melo MML, Teixeira MSC, Goes JVC, Viana MA, Oliveira VS, Honorato JS, Silva TMCE, Magalhães SMM, Pinheiro RF. CYTOGENETIC ANALYSIS OF 2,205 CASES OF HEMATOLOGICAL NEOPLASIA AND GENETIC DISEASES: A SINGLE CENTER EXPERIENCE. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Sampaio LR, Oliveira VS, Viana MA, Ferreira BV, Melo MML, Silva TMCE, Ribeiro RCO, Dias RDB, Magalhães SMM, Pinheiro RF. INCREASED PROGRAMMED DEATH LIGAND-1 EXPRESSION LEADS TO WORSE CLINICAL FEATURES IN PATIENTS WITH MYELODYSPLASTIC SYNDROME. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Oliveira VS, Braga MC, Monte CS, Viana MA, Sampaio LR, Goes JVC, Pinheiro GFA, Minete NFA, Pinheiro RF, Magalhães SMM. ATM DNA METHYLATION ASSOCIATED WITH POOR PROGNOSIS AND LEUKEMIA TRANSFORMATION IN MYELODYSPLASTIC SYNDROME PATIENTS. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Oliveira Júnior JC, Miola TM, Roman SM, Oliart-Guzmán H, Oliveira VS, Souza JDO, Makdissi FB, Bitencourt AGV. Computed tomography assessment of body composition in patients with nonmetastatic breast cancer: what are the best prognostic markers? Radiol Bras 2022; 55:359-364. [PMID: 36514678 PMCID: PMC9743258 DOI: 10.1590/0100-3984.2022.0022] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/19/2022] [Indexed: 12/15/2022] Open
Abstract
Objective To correlate body composition measures, based on computed tomography (CT) analysis of muscle mass and adipose tissue, with disease-free survival in breast cancer patients. Materials and Methods This single-center retrospective study included 262 female patients with nonmetastatic breast cancer. Body composition was assessed on a pretreatment CT scan (at the L3 level). The analysis included quantification of the areas of subcutaneous adipose tissue (SAT), visceral adipose tissue (VAT), and skeletal muscle mass, as well as of the mean skeletal muscle density. The VAT/SAT ratio, skeletal mass index (SMI), and skeletal muscle gauge (SMG) were calculated. Results Of the 262 patients evaluated, 175 (66.8%) were classified as overweight or obese on the basis of their body mass index. We observed low SMI in 35 patients (13.4%) and elevated VAT in 123 (46.9%). Disease-free survival was significantly shorter in the patients who underwent neoadjuvant chemotherapy (p = 0.044), in those with a low SMI (p = 0.006), in those with low SMG (p = 0.013), and in those with a low VAT/SAT ratio (p = 0.050). In a multivariate analysis, only SMG, the VAT/SAT ratio, and having undergone neoadjuvant chemotherapy retained their statistical significance. Conclusion Our results confirm that low SMG and the VAT/SAT ratio can be used as imaging biomarkers to assess prognosis in patients with nonmetastatic breast cancer.
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Affiliation(s)
| | | | | | | | | | | | | | - Almir Galvão Vieira Bitencourt
- A.C.Camargo Cancer Center, São Paulo, SP, Brazil. ,Correspondence: Dr. Almir Galvão Vieira Bitencourt.
A.C.Camargo Cancer Center – Departamento de Imagem. Rua Professor Antônio
Prudente, 211, Liberdade. São Paulo, SP, Brazil, 01509-010.
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Dos Santos Almeida S, Silva Oliveira V, Ribeiro Dantas M, Luiz Borges L, Teixeira de Sabóia-Morais SM, Lopes Rocha T, Luiz Cardoso Bailão EF. Environmentally relevant concentrations of benzophenone-3 induce differential histopathological responses in gills and liver of freshwater fish. Environ Sci Pollut Res Int 2021; 28:44890-44901. [PMID: 33852111 DOI: 10.1007/s11356-021-13839-0] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
BP-3 is one of the most used organic UV filters. However, its widespread use and release into aquatic environment can induce ecotoxicological impact on aquatic organisms. Thus, the aim of the current study is to evaluate the gills and liver of freshwater fish Poecilia reticulata subjected to acute exposure (96 h) to BP-3 at environmentally relevant concentrations (10-1000 ng L-1). The study was based on adopting qualitative and semi-quantitative approach to assess histopathological changes and integrated the biomarker response in order to investigate organ-specific responses to BP-3 exposure. BP-3 has induced high histopathological index associated with circulatory disturbances, as well as with regressive and immunological changes in gills, whereas the hepatic histopathological index was associated with circulatory disturbances. Moreover, lower BP-3 concentrations were mostly associated with changes in gills, whereas higher BP-3 concentration was mostly linked to hepatic changes. In conclusion, acute exposure to BP-3 at environmentally relevant concentrations had stronger impact on gills than on the liver of P. reticulata, which confirmed organ-specific responses to UV filters.
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Affiliation(s)
- Sara Dos Santos Almeida
- Laboratory of Biotechnology, Central Campus, State University of Goiás, Anápolis, Goiás, 75.132-903, Brazil
| | - Vinícius Silva Oliveira
- Laboratory of Biotechnology, Central Campus, State University of Goiás, Anápolis, Goiás, 75.132-903, Brazil
| | - Mariana Ribeiro Dantas
- Laboratory of Biotechnology, Central Campus, State University of Goiás, Anápolis, Goiás, 75.132-903, Brazil
| | - Leonardo Luiz Borges
- Laboratory of Biotechnology, Central Campus, State University of Goiás, Anápolis, Goiás, 75.132-903, Brazil
- School of Medical, Pharmaceutical and Biomedical Sciences, Pontifical Catholic University of Goiás, Goiânia, Goiás, Brazil
| | | | - Thiago Lopes Rocha
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
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Silva Oliveira V, Camboim MM, Protasio de Souza C, Silva Guedes de Lima BA, Baiocchi O, Kim HS. A Thermoelectric Energy Harvester Based on Microstructured Quasicrystalline Solar Absorber. Micromachines (Basel) 2021; 12:mi12040393. [PMID: 33918230 PMCID: PMC8066090 DOI: 10.3390/mi12040393] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/27/2021] [Accepted: 03/31/2021] [Indexed: 11/29/2022]
Abstract
As solar radiation is the most plentiful energy source on earth, thermoelectric energy harvesting emerges as an interesting solution for the Internet of Things (IoTs) in outdoor applications, particularly using semiconductor thermoelectric generators (TEGs) to power IoT devices. However, when a TEG is under solar radiation, the temperature gradient through TEG is minor, meaning that the TEG is useless. A method to keep a significant temperature gradient on a TEG is by using a solar absorber on one side for heating and a heat sink on the other side. In this paper, a compact TEG-based energy harvester that features a solar absorber based on a new class of solid matter, the so-called quasicrystal (QC), is presented. In addition, a water-cooled heat sink to improve the temperature gradient on the TEG is also proposed. The harvester is connected to a power management circuit that can provide an output voltage of 3 V and store up to 1.38 J in a supercapacitor per day. An experimental evaluation was carried out to compare the performance of the proposed QC-based harvester with another similar harvester but with a solar absorber based on conventional black paint. As a result, the QC-based harvester achieved 28.6% more efficient energy generation and achieved full charge of a supercapacitor around two hours earlier. At last, a study on how much the harvested energy can supply power to a sensor node for Smart agriculture during a day while considering a trade-off between the maximum number of measurements and the maximum number of transmission per day is presented.
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Affiliation(s)
- Vinícius Silva Oliveira
- Department of Electrical Engineering, Federal University of Paraíba, João Pessoa, PB 5115, Brazil; (M.M.C.); (C.P.d.S.)
- Correspondence:
| | - Marcelo Miranda Camboim
- Department of Electrical Engineering, Federal University of Paraíba, João Pessoa, PB 5115, Brazil; (M.M.C.); (C.P.d.S.)
| | - Cleonilson Protasio de Souza
- Department of Electrical Engineering, Federal University of Paraíba, João Pessoa, PB 5115, Brazil; (M.M.C.); (C.P.d.S.)
| | | | - Orlando Baiocchi
- School of Engineering and Technology, University of Washington Tacoma, Tacoma, WA 98195-2180, USA; (O.B.); (H.-S.K.)
| | - Hee-Seok Kim
- School of Engineering and Technology, University of Washington Tacoma, Tacoma, WA 98195-2180, USA; (O.B.); (H.-S.K.)
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Sousa PJ, Magalhães PJ, Lima CC, Oliveira VS, Leal-Cardoso JH. Effects of piperitenone oxide on the intestinal smooth muscle of the guinea pig. Braz J Med Biol Res 1997; 30:787-91. [PMID: 9292118 DOI: 10.1590/s0100-879x1997000600014] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [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: 02/05/2023] Open
Abstract
We investigated the effects of piperitenone oxide (PO), a major constituent of the essential oil of Mentha x villosa, on the guinea pig ileum. PO (30 to 740 micrograms/ml) relaxed basal tonus without significantly altering the resting membrane potential. In addition, PO relaxed preparations precontracted with either 60 mM K+ or 5 mM tetraethylammonium in a concentration-dependent manner. At concentrations from 0.1 to 10 micrograms/ml PO potentiated acetylcholine-induced contractions, while higher concentrations (> 30 micrograms/ml) blocked this response. These higher PO concentrations also inhibited contractions induced by 60 mM K+. PO also blocked the components of acetylcholine contraction which are not sensitive to nifedipine or to solutions with nominal zero Ca2+ and EGTA. These results show that PO is a relaxant of intestinal smooth muscle and suggest that this activity may be mediated at least in part by an intracellular effect.
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Affiliation(s)
- P J Sousa
- Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, Fortaleza, Brasil
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Rocha H, Oliveira VS, de Oliveira MM. The interaction of gram negative bacteria and S. mansoni in mice with experimental schistosomiasis. Mem Inst Oswaldo Cruz 1980; 75:161-72. [PMID: 7231157 DOI: 10.1590/s0074-02761980000100016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Animals (122 mice) were infected each with eighty cercariae of S. mansoni and subsequently challenged intravenously eight weeks later with the following gram-negative organisms. S. typhi, E. coli, Klebsiella-enterobacter species, Proteus mirabilis and Pseudomonas aeruginosa. Enumeration of bacteria in the liver, spleen and blood and S. mansoni from the portal sistem was performed from one to four weeks later in infected animals. A significant difference between infection produced by S. typhi and other gram negative organisms was observed: S. typhi persisted longer in the spleen and liver and could be recovered from S. mansoni worms up to three weeks following bacterial infection. Other gram negative bacteria disappeared from S. mansoni worms after two weeks of initial challenge. Additional animals (51 mice) infected with S. mansoni were given S. typhi, E. coli or sterile saline. After two weeks, animals were sacrificed and the recovery rate of worms from the portal system, and the mesenteric and hepatic oogram were determined. in animals infected with E. coli a significant decrease in the number of worms was observed compared to the saline control group; thirty worms were recovered in the control group compared to two worms in e. coli infected animals. In addition, the patterns of oviposition was significantly different in these latter animals suggesting complete inhibition of this process. Following S. typhi infection the difference in recovery of worms and pattern of oviposition was minimal. These findings suggest a difference in the interaction of various gram negative bacteria and S. mansoni and are consistent with the clinical observation of prolonged salmonella bacteremia in patients with schistosomiasis.
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Bittencourt AL, Oliveira VS, Andrade CC. [Observations on the tentative transmission of congenital schistosomiasis mansoni]. Rev Inst Med Trop Sao Paulo 1972; 14:106-8. [PMID: 5049294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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Rocha H, de Oliveira MM, Oliveira VS, Prata A. [Characteristics of Salmonella typhi infection in mice with experimental schistosomiasis: multiplication of the bacteria in Schistosoma mansoni]. Rev Inst Med Trop Sao Paulo 1971; 13:399-404. [PMID: 5124649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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da Motta JG, Oliveira VS, Barretto AC. [Susceptibility of suckling mice to S. mansoni infection]. Rev Inst Med Trop Sao Paulo 1965; 7:337-42. [PMID: 5855202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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