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Galdino-Júnior H, Martins de Oliveira Segundo E, Gomes Malaquias S, Vinaud MC, Pereira LV, Guimarães RA, Bachion MM. Effect of Heated Saline Solution on Pain Intensity, Wound Bed Temperature, and Comfort during Chronic Wound Dressing Changes: Crossover Randomized Clinical Trial. Adv Skin Wound Care 2024; 37:1-8. [PMID: 38648246 DOI: 10.1097/asw.0000000000000137] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
OBJECTIVE To evaluate the use of heated saline solution during wound cleaning on the intensity of pain related to the procedure, the temperature of the wound bed, and the comfort of patients with chronic wounds. Further, to investigate patient preference in relation to the temperature of the solution used for cleaning. METHODS Crossover, single-blind, clinical trial with 32 people with chronic wounds. Providers cleaned the wounds with room temperature and heated saline solution. Participants were randomized into group 1 A/B (heated solution first, room temperature second) or group 2 B/A (room temperature solution first, heated solution second), with a 10-minute washout period. Investigators evaluated pain intensity, wound bed temperature, and patient-reported comfort and preference. RESULTS The heated solution was preferred (P = .04) and more often referred to as comfortable (P = .04) by the participants. There was no difference in pain intensity before and after cleaning with room temperature (2.03; P = .155) and heated saline (2.25; P = .44). The heated solution increased the temperature of the wound bed by 0.5 °C. CONCLUSIONS Although heating saline solution could be an important comfort measure during dressing changes, quantitatively, the temperature of the solution did not significantly change the temperature of the wound bed nor the intensity of pain patients experienced.
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Affiliation(s)
- Hélio Galdino-Júnior
- Hélio Galdino-Júnior, MPH, RN, is Associate Professor, Federal University of Goiás, Goiânia, Goiás, Brazil. Emilson Martins de Oliveira Segundo, MSN, RN, is ICU Nursing Coordinator, Hospital Ortopédico Promed-Hapvida NotreDame Intermédica, Goiânia. Also at the Federal University of Goiás, Suelen Gomes Malaquias, MSN, RN, is Adjunct Professor; Marina Clare Vinaud, PhD, is Associate Professor; Lilian Varanda Pereira, PhD, RN, is Full Professor; Rafael Alves Guimarães, PhD, RN, is Adjunct Professor; and Maria Márcia Bachion, PhD, RN, is Full Professor. The authors have disclosed no financial relationships related to this article. Submitted January 5, 2023; accepted in revised form March 14, 2023
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Araújo JAA, Gomes TC, Lima VCN, Silva YBD, Lino Junior RDS, Vinaud MC. Oxfendazole Nitazoxanide combination in experimental neurocysticercosis - Anti-inflammatory and cysticidal effects. Exp Parasitol 2024; 262:108764. [PMID: 38677580 DOI: 10.1016/j.exppara.2024.108764] [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: 08/28/2023] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
Neurocysticercosis (NCC) is a parasitic infection caused by the larval stage of the pork tapeworm, Taenia solium. The complications of NCC include seizures, headaches, cognitive impairment, and focal neurological deficits. In addition to antiparasitic drugs and surgery, the management of NCC includes the use of corticosteroids to reduce inflammation and control symptoms. The traditional treatment with albendazole and praziquantel has not been altered over 30 years and present several side effects. There are other anti-helminthic drugs such as oxfendazole and nitazoxanide that may show efficacy in NCC treatment. The aim of this study was to determine the histopathologic aspects of experimental NCC after in vivo treatment with the combination of oxfendazole and nitazoxanide. Balb/c mice were infected with T. crassiceps cysticerci and divided into groups of 10 animals each that received a single dose through gavage as follows: group treated with NaCl 0.9% (control group); group treated by monotherapy of the anti-helminthic drugs, 30 mg/kg in single dose of oxfendazole (OXF) or nitazoxanide (NTZ); and groups treated with the combination of the drugs (OXF/NTZ group). Macroscopic and microscopic analysis were performed. There was greater presence of final stage cysticerci after treatment. The microscopic analysis of the general pathological processes showed that the monotherapy with all treatment groups induced higher perivasculitis than what was observed in the control group. In contrast, the combination treatment showed a lower observation of PMN and MN inflammatory infiltration in comparison to the other treatments and to the control one. These results show that indeed the association of benzimidazole derivatives which present both anti-helminthic and anti-inflammatory properties with other cysticidal drugs are beneficial for the NCC treatment in which the aim is to destroy parasite without inducing inflammatory damage in the brain tissue.
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Affiliation(s)
- Jefferson Aber Alves Araújo
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil
| | - Taynara Cristina Gomes
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil
| | - Vanessa Cindy Neres Lima
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil
| | - Yngrid Batista da Silva
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil
| | - Ruy de Souza Lino Junior
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil
| | - Marina Clare Vinaud
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil.
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Milhomem AC, Gomes RS, Tomé FD, Dos Santos Arruda F, Franco PIR, da Costa EL, Pereira JX, Vinaud MC, de Souza Lino Júnior R. Polymethylmethacrylate Microspheres are Immunologically Inert in Mouse Tissues. Aesthetic Plast Surg 2023; 47:2813-2822. [PMID: 36607354 DOI: 10.1007/s00266-022-03243-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 12/18/2022] [Indexed: 01/07/2023]
Abstract
Nowadays, aesthetic concerns have gained attention, especially by patients looking for a less invasive alternative to minor facial corrections. Polymethylmethacrylate (PMMA) is widely used as a soft tissue filler; the demand for this polymer has increased, and along with it, there are some reports of adverse reactions. Such adverse reactions stem from consequences of immune and inflammatory reactions to PMMA. Some animal models have been used to unravel the causes of these reactions, among other factors involving the management of PMMA. The aim of this study was to determine the immunogenic profile of PMMA implantation in different anatomical planes of mice, over up to 360 experimental days. In this study, BALB/c mice were divided into 30 groups for immune evaluation of the interaction between the organism and the polymer; 2% PMMA was implanted subcutaneously, 10% intramuscularly and 30% in periosteal juxtaposition and followed during five experimental days (7, 30, 90, 180 and 360 days after implantation-DAI). Pro- and anti-inflammatory cytokines (IL-2, IL-4, IL-6, IFN-gamma, TNF, IL-17A, IL-10 and TGF-beta) were quantified in all experimental days. There was no statistical difference between the groups analyzed considering the evaluated parameters. Therefore, at all implanted depths, PMMA behaved inertly in a murine model.No Level Assigned This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Anália Cirqueira Milhomem
- Department of Biosciences and Technology , Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goias (UFG), Rua 235, s/n.º - Setor Leste Universitário, Goiânia, Goiás, Brazil
| | - Rodrigo Saar Gomes
- Department of Biosciences and Technology , Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goias (UFG), Rua 235, s/n.º - Setor Leste Universitário, Goiânia, Goiás, Brazil
| | - Fernanda Dias Tomé
- Department of Biosciences and Technology , Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goias (UFG), Rua 235, s/n.º - Setor Leste Universitário, Goiânia, Goiás, Brazil
| | - Felipe Dos Santos Arruda
- Department of Biosciences and Technology , Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goias (UFG), Rua 235, s/n.º - Setor Leste Universitário, Goiânia, Goiás, Brazil
| | - Pablo Igor Ribeiro Franco
- Department of Biosciences and Technology , Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goias (UFG), Rua 235, s/n.º - Setor Leste Universitário, Goiânia, Goiás, Brazil
| | - Eduardo Luiz da Costa
- Bioplastia Brasil, Rua T-55, nº 938, sala 1009; Edifício EBM Walk Bueno - Setor Bueno, Goiânia, Goiás, Brazil
| | - Jonathas Xavier Pereira
- Department of Biosciences and Technology , Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goias (UFG), Rua 235, s/n.º - Setor Leste Universitário, Goiânia, Goiás, Brazil
| | - Marina Clare Vinaud
- Department of Biosciences and Technology , Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goias (UFG), Rua 235, s/n.º - Setor Leste Universitário, Goiânia, Goiás, Brazil
| | - Ruy de Souza Lino Júnior
- Department of Biosciences and Technology , Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goias (UFG), Rua 235, s/n.º - Setor Leste Universitário, Goiânia, Goiás, Brazil.
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Martins KLE, Thomaz MM, Magno LN, Vinaud MC, Almeida LM, Gonçalves PJ, Lino RDS. Macroporous latex biomembrane from Hancornia speciosa modulates the inflammatory process and has a debridement effect on wound healing in rats. Acta Cir Bras 2023; 38:e385323. [PMID: 37878987 PMCID: PMC10592594 DOI: 10.1590/acb385323] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 08/25/2023] [Indexed: 10/27/2023] Open
Abstract
PURPOSE The angiogenic, osteogenic and anti-inflammatory activity of latex of Hancornia speciosa has been evidenced and indicates pharmacological potential with great applicability in the health area, especially in the wound healing process. The present work aimed to compare the effects of the H. speciosa macroporous latex biomembrane with saline on wound healing. METHODS Forty-three Wistar rats were submitted to excisional wound induction procedure and divided into groups according to treatment: saline (G1), and macroporous biomembrane (G2). The animals were euthanized at three, seven, 14, and 21 days after injury induction (DAI), and three animals were used for the debridement test. Morphometric, macroscopic, and microscopic analyses of general pathological processes were performed. RESULTS The macroporous biomembrane minimized necrosis and inflammation during the inflammatory and proliferative phases of the healing process, confirmed by the lower intensity of the crust and the debridement effect. In addition, the wounds treated with the macroporous biomembrane presented greater contraction rates in all the experimental periods analyzed. CONCLUSIONS The macroporous biomembrane presents angiogenic, anti-inflammatory and debridement effects, contributing to the healing process, and can be considered a potentially promising new biomaterial to be used as a dressing.
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Affiliation(s)
| | - Marcelo Martins Thomaz
- Instituto Master de Ensino Presidente Antônio Carlos – Medicine School – Itumbiara (GO) – Brazil
| | | | - Marina Clare Vinaud
- Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Goiânia (GO) – Brazil
| | | | | | - Ruy de Souza Lino
- Universidade Federal de Goiás – Physics Institute – Goiânia (GO) – Brazil
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da Silva Santana RC, Prudente TP, de Sousa Guerra CH, de Lima NF, de Souza Lino Junior R, Vinaud MC. Albendazole - Ivermectin combination decreases inflammation in experimental neurocysticercosis. Exp Parasitol 2023:108568. [PMID: 37327965 DOI: 10.1016/j.exppara.2023.108568] [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: 10/18/2022] [Revised: 06/13/2023] [Accepted: 06/13/2023] [Indexed: 06/18/2023]
Abstract
Neurocysticercosis (NCC) is a public health issue in endemic regions and is considered the main preventable cause of neurologic disease. It is caused by the presence of Taenia solium cysticercus in the central nervous system. The current treatment is performed with anthelminthic drugs - albendazole (ABZ) or praziquantel - associated with anti-inflammatory and corticosteroids in order to prevent the negative effects of the inflammatory reaction to the parasite's death. Ivermectin (IVM) is an anthelminthic drug that has been shown to present an anti-inflammatory effect. The aim of this study was to was to evaluate the histopathologic aspects of experimental NCC after in vivo treatment with a combination of ABZ-IVM. Balb/c mice were intracranially inoculated with T. crassiceps cysticerci and after 30 days of infection were treated with a single dose of NaCl 0.9% (control group), ABZ monotherapy (40 mg/kg), IVM monotherapy (0.2 mg/kg) or a combination of ABZ-IVM. 24h after the treatment the animals were euthanized and the brain was removed for histopathologic analysis. The IVM monotherapy and ABZ-IVM combination showed more degenerated cysticerci, less inflammatory infiltration, meningitis and hyperemia than the other groups. Therefore, it is possible to recommend the combination of albendazole and ivermectin as alternative chemotherapy for NCC due to its antiparasitic and anti-inflammatory effects, with potential to decrease the negative effects of the inflammatory burst when the parasite is killed within the CNS.
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Affiliation(s)
| | - Tiago Paiva Prudente
- Medicine School, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil
| | | | - Nayana Ferreira de Lima
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil
| | - Ruy de Souza Lino Junior
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil
| | - Marina Clare Vinaud
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, Goiás, CEP: 74605-050, Brazil.
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Carvalho CDS, Bernardes MJC, Gonçalves RC, Vilela MS, da Silva MVM, Oliveira VDS, da Rocha MR, Vinaud MC, Galdino H, Lino RDS. Treatment of experimentally induced partial-thickness burns in rats with different silver-impregnated dressings. Acta Cir Bras 2022; 37:e370801. [PMID: 36449949 PMCID: PMC9708113 DOI: 10.1590/acb370801] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 07/20/2022] [Indexed: 11/29/2022] Open
Abstract
PURPOSE To evaluate the morphometric, macroscopic and microscopic aspects of experimentally induced partial-thickness burns in rats treated with different silver-based dressings. METHODS Wistar rats were used, divided into six treatments: saline (NaCl 0.9%); silver sulfadiazine 1%; Silvercel; Mepilex Ag; Aquacel Ag and Acticoat. The animals were monitored daily and euthanized at 7, 14 and 30 days after injury induction (DAI). RESULTS At 7 DAI, necrosis/crust was greater in control, silver sulfadiazine and Mepilex Ag treatments, granulation tissue was induced by Aquacel Ag, polymorphonuclear infiltrate (PMN) infiltration was intensified by Mepilex Ag; mononuclear infiltrate (MN) infiltration and angiogenesis were increased by Silvercel. At 14 DAI, hemorrhage was decreased by Silvercel and Mepilex Ag, PMN infiltration increased by Acticoat. At 30 DAI, angiogenesis was greater in the Acticoat treatment and fibroblasts were increased by Acticoat and Mepilex Ag. Collagen was induced at 14 DAI by silver sulfadiazine and Aquacel Ag and, at 30 DAI, by silver sulfadiazine and Silvercel treatments. CONCLUSIONS Silvercel and Acticoat presented better results than the other products. However, all the dressings were better than the control at some point during the process, and may contribute to the healing of partial thickness burns. Silvercel and Aquacel Ag treatments induced better cosmetic outcomes regarding wound closure and scarring.
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Affiliation(s)
- Carolyna de Sousa Carvalho
- MSc. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Tropical Medicine and Public Health Graduation Program – Goiânia (GO), Brazil
| | - Milton Junio Cândido Bernardes
- PhD. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Biology of the Host-Parasite Relationship Graduation Program – Goiânia (GO), Brazil
| | - Randys Caldeira Gonçalves
- MSc. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Tropical Medicine and Public Health Graduation Program – Goiânia (GO), Brazil
| | | | | | - Vinicius da Silva Oliveira
- Graduate student. Universidade Federal de Goiás – Medicine School – Medicine Course – Goiânia (GO), Brazil
| | - Marcelo Ribeiro da Rocha
- Graduate student. Universidade Federal de Goiás – Medicine School – Medicine Course – Goiânia (GO), Brazil
| | - Marina Clare Vinaud
- PhD. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Biosciences Department – Goiânia (GO), Brazil
| | - Hélio Galdino
- PhD. Universidade Federal de Goiás – Nursing School – Goiânia (GO), Brazil
| | - Ruy de Souza Lino
- PhD. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Biosciences Department – Goiânia (GO), Brazil.,Corresponding author:
- (55 62) 3209-6113
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Milhomem AC, de Souza Jorge IM, dos Santos Arruda F, Tomé FD, da Costa EL, Vinaud MC, Pereira JX, de Souza Lino Júnior R. Tissue Remodeling After Implantation with Polymethylmethacrylate: An Experimental Study in Mice. Aesthetic Plast Surg 2022; 47:1205-1216. [DOI: 10.1007/s00266-022-03179-w] [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] [Received: 08/29/2022] [Accepted: 11/06/2022] [Indexed: 11/26/2022]
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Bernardes MJC, Gonçalves RC, Carvalho CDS, Rosa LM, Ferreira AP, Vilela MS, Vinaud MC, Galdino Junior H, Lino Junior RDS. Hydrogel-based dressings in the treatment of partial thickness experimentally induced burn wounds in rats. Acta Cir Bras 2022; 37:e370401. [PMID: 35792743 PMCID: PMC9290765 DOI: 10.1590/acb370401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/11/2022] [Indexed: 11/22/2022] Open
Abstract
Purpose: To compare four commercially available hydrogel formulations in the healing
of partial thickness burns experimentally induced in rats. Methods: Wistar rats were used, and after the burn wound induction they were divided
into the following treatment groups: G1) NaCl 0.9%; G2) 1% silver
sulfadiazine; G3) Debrigel™; G4) Safgel™; G5) Dersani™; G6) Solosite™. The
animals were followed during seven, 14 and 30 days after the injury
induction. Morphometric, macroscopic and microscopic evaluations were
performed. Results: The treatment with Dersani™ induced better results during the inflammatory
and proliferative phases of the healing process (p<0.05). The animals
treated with Safgel™ presented better scaring in the remodeling phase
(p<0.05), and the treatment with Dersani™ and Solosite™ induced greater
wound closure (p<0.05). Conclusions: The hydrogel-based dressings presented beneficial outcomes in the healing of
burn wounds experimentally induced in rats due to their ability in maintain
the humidity of the wound, in removing the exudate, in promoting cell
migration and collagen production during the different phases of the healing
process.
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Affiliation(s)
- Milton Junior Cândido Bernardes
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | - Randys Caldeira Gonçalves
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | - Carolyna de Sousa Carvalho
- MSc. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | | | | | | | - Marina Clare Vinaud
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Biosciences Department - Goiânia (GO), Brazil
| | | | - Ruy de Souza Lino Junior
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Biosciences Department - Goiânia (GO), Brazil
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Ferreira de Lima N, de Andrade Picanço G, Costa TL, Vinaud MC. In vitro metabolic stress induced by nitazoxanide and flubendazole combination in Taenia crassiceps cysticerci. Exp Parasitol 2022; 238:108265. [PMID: 35525309 DOI: 10.1016/j.exppara.2022.108265] [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: 06/25/2021] [Revised: 04/18/2022] [Accepted: 04/25/2022] [Indexed: 11/17/2022]
Abstract
Taenia crassiceps is often used as experimental model for T. solium cysticercosis studies. Currently cysticercosis antiparasitic treatment is based on albendazole and praziquantel which may present side effects and parasitic resistance. The search for other antiparasitic drugs is necessary. Nitazoxanide (NTZ) and flubendazole (FLB) are broad spectrum antiparasitic drugs that present anti-cysticercosis effect. Metabolic analyses help to determine the impact of these drugs on parasites. The aim of this study was to determine the impact on the production and excretion of organic metabolites in T. crassiceps cysticerci after in vitro exposure to NTZ and FLB, isolated or in combination. T. crassiceps cysticerci were culture in RPMI medium and exposed to 10μg/mL of NTZ, 10μg/mL of FLB or 10μg/mL of NTZ +10μg/mL of FLB. 24h after exposure, the parasites were chromatographic analyzed to determine the impact of these drugs on glycolysis, homolactic fermentation, tricarboxylic acid cycle, fatty acids oxidation and proteins catabolism. It was possible to determine that the drugs combination induced greater metabolic impact on cysticerci in comparison to the isolated drugs exposure. The drugs combination induced gluconeogenesis, metabolic acidosis, increase in tricarboxylic acid cycle and in proteins catabolism. While the NTZ isolated exposure induced metabolic acidosis and protein catabolism and the FLB isolate exposure induced gluconeogenesis and protein catabolism. These results show that the combination of drugs with different modes of action increase the antiparasitic effect and may be indicated as alternative cysticercosis treatments.
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Affiliation(s)
- Nayana Ferreira de Lima
- Laboratory of Studies of the Host-parasite Relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Brazil
| | - Guaraciara de Andrade Picanço
- Laboratory of Studies of the Host-parasite Relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Brazil
| | - Tatiane Luiza Costa
- Laboratory of Studies of the Host-parasite Relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Brazil
| | - Marina Clare Vinaud
- Laboratory of Studies of the Host-parasite Relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Brazil.
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de Andrade Picanço G, Ferreira de Lima N, Cristina Gomes T, de Sousa Mendes Moreira Alves D, Luísa da Costa T, Vinaud MC. Intraperitoneal and intracranial experimental cysticercosis present different metabolic preferences after treatment with isolated or combined albendazole and nitazoxanide. Acta Trop 2022; 226:106264. [PMID: 34919953 DOI: 10.1016/j.actatropica.2021.106264] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 11/15/2021] [Accepted: 12/03/2021] [Indexed: 11/17/2022]
Abstract
Cysticercosis is a zoonotic public health issue especially severe when the parasite is in the central nervous system although it may be found all over the human organism. Taenia crassiceps cysticerci inoculated in mice is the experimental model used to study cysticercosis. The most used cysticercosis treatment is with albendazole (ABZ). Nitazoxanide (NTZ) has been experimentally tested against this parasite. Metabolic analysis has been used to determine drugs impact on the parasite. The aim of this study was to determine the in vivo metabolic impact of the ABZ-NTZ combination in T. crassiceps cysticerci inoculated in mice peritoneal and intracranial cavities. Mice were experimentally inoculated with T. crassiceps cysticerci in the intraperitoneal cavity or in the intracranial one. Thirty days after the infection they were treated with NaCl 0.9% (control group), 50 mg/kg of ABZ, 50 mg/kg of NTZ or 50 mg/kg of NTZ and ABZ (ABZ/NTZ combination). 24 h after treatment the animals were euthanized and the cysticerci analyzed through high performance chromatography and spectrophotometry in order to detect the glycolytic, mitochondrial and protein catabolism pathways. The intracranial parasites used more intensely the homolactic fermentation while the intraperitoneal ones presented a greater use of the mitochondrial pathways and protein catabolism. Regarding the glycolytic pathways, it was possible to observe a significant impact induced by the drugs used, both isolated or in combination. It was possible to detect an increase in the fumarate reductase pathway after the drugs exposure and no impact in the protein's catabolism. Therefore, the cysticerci showed different uses of metabolic pathways regarding the site of inoculation due to the availability of nutrients inherent of each environment. This study showed the parasite metabolic resilience and capability of use of different biochemical pathways in order to ensure survival in spite of a hostile environment.
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Affiliation(s)
- Guaraciara de Andrade Picanço
- Laboratory of studies of the host-parasite relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Universitário, Goiania, Goias CEP 74605-050 Brazil
| | - Nayana Ferreira de Lima
- Laboratory of studies of the host-parasite relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Universitário, Goiania, Goias CEP 74605-050 Brazil
| | - Taynara Cristina Gomes
- Laboratory of studies of the host-parasite relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Universitário, Goiania, Goias CEP 74605-050 Brazil
| | - Daniella de Sousa Mendes Moreira Alves
- Laboratory of studies of the host-parasite relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Universitário, Goiania, Goias CEP 74605-050 Brazil
| | - Tatiane Luísa da Costa
- Laboratory of studies of the host-parasite relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Universitário, Goiania, Goias CEP 74605-050 Brazil
| | - Marina Clare Vinaud
- Laboratory of studies of the host-parasite relationship, Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Universitário, Goiania, Goias CEP 74605-050 Brazil.
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Rezende HHA, Igreja JASLD, Gomes-Júnior AR, Melo JDO, Garcia JL, Martins FDC, Storchilo HR, Gomes TC, Vinaud MC, Castro AMD. Molecular characterization of Toxoplasma gondii isolates from free-range chickens reveals new genotypes in Goiânia, Goiás, Brazil. Rev Bras Parasitol Vet 2021; 30:e000321. [PMID: 34076043 DOI: 10.1590/s1984-29612021029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/12/2021] [Indexed: 11/22/2022]
Abstract
The aim of this study was to evaluate the genotypic characteristics of Toxoplasma gondii isolated from free-range chickens in the metropolitan area of Goiânia, Goiás, in Brazil's central-west region. The seroprevalence rate was found to be 96%, according to an indirect hemagglutination assay. Brain and heart samples were processed by peptic digestion for a mice bioassay. The tissues were homogenized and the resulting samples were subjected to polymerase chain reaction (PCR), which revealed that 64% of them contained the parasite's DNA. The mice bioassay revealed 15 isolates, 8 of them tachyzoites isolates from the peritoneal lavage and 7 from brain cysts. T. gondii genotypes were determined through PCR-RFLP, using the following markers: SAG1, SAG2, SAG3, BTUB, GRA6, c22-8, c29-2, L358, PK1, alt. SAG2, Apico and CS3. Three genotypes were identified, inclued ToxoDB #65, and the other two are not yet described in the literature. Hence, we conclude that the isolates obtained from the metropolitan area of Goiânia showed relatively low genetic diversity.
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Affiliation(s)
- Hanstter Hallison Alves Rezende
- Laboratório de Bioquímica Clínica e Líquidos Corporais, Unidade Acadêmica de Ciências da Saúde, Universidade Federal de Jataí - UFJ, Jataí, GO, Brasil
| | - Jaqueline Ataíde Silva Lima da Igreja
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás - UFG, Goiânia, GO, Brasil
| | - Antônio Roberto Gomes-Júnior
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás - UFG, Goiânia, GO, Brasil
| | - Jade de Oliveira Melo
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás - UFG, Goiânia, GO, Brasil
| | - João Luís Garcia
- Laboratório de Protozoologia Veterinária, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | | | - Heloísa Ribeiro Storchilo
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás - UFG, Goiânia, GO, Brasil
| | - Taynara Cristina Gomes
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás - UFG, Goiânia, GO, Brasil
| | - Marina Clare Vinaud
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás - UFG, Goiânia, GO, Brasil
| | - Ana Maria de Castro
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás - UFG, Goiânia, GO, Brasil
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12
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Gonçalves RC, Signini R, Rosa LM, Dias YSP, Vinaud MC, Lino RDS. Carboxymethyl chitosan hydrogel formulations enhance the healing process in experimental partial-thickness (second-degree) burn wound healing. Acta Cir Bras 2021; 36:e360303. [PMID: 33825787 PMCID: PMC8026200 DOI: 10.1590/acb360303] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/19/2021] [Accepted: 02/15/2021] [Indexed: 01/15/2023] Open
Abstract
PURPOSE This study aimed to elaborate a hydrogel constituted by carboxymethyl chitosan (CMC), hyaluronic acid (HA) and silver (Ag) and to evaluate its healing effect on partial-thickness burn wounds experimentally induced in rats. METHODS CMC was obtained by chitosan reacting with monochloroacetic acid. The carboxymethylation was confirmed by Fourier-transform infrared spectroscopy and hydrogen nuclear magnetic resonance (NMR). Scanning electron microscopy was used to determine the morphologicalcharacteristics of chitosan and CMC. After the experimental burn wound induction, the animals (n = 126) were treated with different CMC formulations, had their occlusive dressings changed daily and were followed through 7, 14 and 30 days. Morphometric, macroscopic and microscopic aspects and collagen quantification were evaluated. RESULTS Significative wound contraction, granulation tissue formation, inflammatory infiltration and collagen fibers deposit throughout different phases of the healing process were observed in the CMC hydrogels treated groups. CONCLUSIONS The results showed that, in the initial phase of the healing process, the most adequate product was the CMC/HA/Ag association, while in the other phases the CMC/HA association was the best one to promote the healing of burn wounds.
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Affiliation(s)
- Randys Caldeira Gonçalves
- PhD. Universidade Federal de Goiás – Instituto de Patologia Tropical
e Saúde Pública – Programa de Pós-Graduação em Medicina Tropical e Saúde Pública –
Goiânia (GO), Brazil
| | - Roberta Signini
- PhD. Universidade Estadual de Goiás – Campus de Ciências Exatas e
Tecnológicas – Anápolis (GO), Brazil
| | - Luciana Martins Rosa
- Graduate student. Universidade Federal de Goiás – Faculdade de
Medicina – Goiânia (GO), Brazil
| | | | - Marina Clare Vinaud
- PhD. Universidade Federal de Goiás – Instituto de Patologia Tropical
e Saúde Pública – Departamento de Biociências e Tecnologia – Goiânia (GO),
Brazil
| | - Ruy de Souza Lino
- PhD. Universidade Federal de Goiás – Instituto de Patologia Tropical
e Saúde Pública – Departamento de Biociências e Tecnologia – Goiânia (GO),
Brazil
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13
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Vinaud MC, Simão WC, Ferreira FG. Emotional triangle and Yìntáng (印堂EX-HN3) for insomnia treatment – case report. World Journal of Acupuncture - Moxibustion 2020. [DOI: 10.1016/j.wjam.2020.06.006] [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: 10/23/2022]
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14
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Milhomem AC, Jorge IMDS, da Costa EL, Vinaud MC, Lino Júnior RDS. Polymethyl Methacrylate (PMMA) in the Treatment of a Case of Hemifacial Microsomia. Aesthet Surg J Open Forum 2020; 2:ojaa002. [PMID: 33791622 PMCID: PMC7780458 DOI: 10.1093/asjof/ojaa002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/16/2020] [Indexed: 11/12/2022] Open
Abstract
Hemifacial microsomia (HMF) is a morphological alteration characterized by facial deformities. These alterations are a consequence of a congenital anomalous development of the first and second branchial arches. It may present a genetic or environmental origin or a mixture of both and is considered mostly multifactorial. The clinical presentation varies; however, some characteristics are predominant such as unilateral mandible hypoplasia, agenesis or malformation of the auricular pavilion, and agenesis or malformation of the eye globe. The aim of this paper was to report a clinical case of a patient with late diagnosis of HMF which presented multiple deformities and received treatment with polymethyl methacrylate (PMMA) implant in different concentrations. Aiming for facial harmony, the PMMA implant occurred in the following regions: canine fossa, nasolabial sulcus, mandible, Bichat Ball, chin outline, lip contour, nose base, columella, nose tip, and dorsum. The treatment resulted in significant improvement in the facial symmetry. Level of Evidence: 5
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Affiliation(s)
| | | | | | - Marina Clare Vinaud
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, GO, Brazil
| | - Ruy de Souza Lino Júnior
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, GO, Brazil
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15
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Ávila LR, Gomes CM, Oliveira PG, Gomes RS, Vinaud MC, Dorta ML, Uliana SRB, Ribeiro-Dias F, Oliveira MAP. Promastigote parasites cultured from the lesions of patients with mucosal leishmaniasis are more resistant to oxidative stress than promastigotes from a cutaneous lesion. Free Radic Biol Med 2018; 129:35-45. [PMID: 30196081 DOI: 10.1016/j.freeradbiomed.2018.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 01/03/2023]
Abstract
Human leishmaniasis caused by Leishmania (Viannia) braziliensis can be presented as localized cutaneous leishmaniasis (LCL) or mucosal leishmaniasis (ML). Macrophages kill parasites using nitric oxide (NO) and reactive oxygen species (ROS). The aim of this study was to evaluate the ability of parasites obtained from patients with LCL or ML to produce and resist NO or ROS. Promastigotes and amastigotes from LCL or ML isolates produced similar amounts of NO in culture. Promastigotes from ML isolates were more resistant to NO and H2O2 than LCL parasites in a stationary phase, whereas amastigotes from LCL isolates were more resistant to NO. In addition, in the stationary phase, promastigote isolates from patients with ML expressed more thiol-specific antioxidant protein (TSA) than LCL isolates. Therefore it is suggested that infective promastigotes from ML isolates are more resistant to microbicidal mechanisms in the initial phase of infection. Subsequently, amastigotes lose this resistance. This behavior of ML parasites can decrease the number of parasites capable of stimulating the host immune response shortly after the infection establishment.
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MESH Headings
- Animals
- Antioxidants/chemistry
- Antioxidants/metabolism
- Antiprotozoal Agents/pharmacology
- Culture Media/chemistry
- Female
- Host-Parasite Interactions
- Humans
- Hydrogen Peroxide/pharmacology
- Immunity, Innate
- Leishmania braziliensis/drug effects
- Leishmania braziliensis/growth & development
- Leishmania braziliensis/isolation & purification
- Leishmania braziliensis/metabolism
- Leishmaniasis, Diffuse Cutaneous/immunology
- Leishmaniasis, Diffuse Cutaneous/metabolism
- Leishmaniasis, Diffuse Cutaneous/parasitology
- Leishmaniasis, Mucocutaneous/immunology
- Leishmaniasis, Mucocutaneous/metabolism
- Leishmaniasis, Mucocutaneous/parasitology
- Life Cycle Stages/drug effects
- Life Cycle Stages/physiology
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Nitric Oxide/metabolism
- Nitric Oxide/pharmacology
- Nitric Oxide Donors/pharmacology
- Nitroprusside/pharmacology
- Protozoan Proteins/genetics
- Protozoan Proteins/metabolism
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Affiliation(s)
- Lucilla Ribeiro Ávila
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235 S/N, Goiânia, Goiás 74605-050, Brazil
| | - Clayson Moura Gomes
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235 S/N, Goiânia, Goiás 74605-050, Brazil; Pontifícia Universidade Católica de Goiás, Av, Universitária 1069, Setor Universitário, Goiânia, Goiás 74605-010, Brazil
| | - Pollyana Guimarães Oliveira
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235 S/N, Goiânia, Goiás 74605-050, Brazil
| | - Rodrigo Saar Gomes
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235 S/N, Goiânia, Goiás 74605-050, Brazil
| | - Marina Clare Vinaud
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235 S/N, Goiânia, Goiás 74605-050, Brazil
| | - Miriam Leandro Dorta
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235 S/N, Goiânia, Goiás 74605-050, Brazil
| | - Silvia Reni Bortolin Uliana
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av. Prof. Lineu Prestes 1374, São Paulo, SP 05508-000, Brazil
| | - Fátima Ribeiro-Dias
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235 S/N, Goiânia, Goiás 74605-050, Brazil
| | - Milton Adriano Pelli Oliveira
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235 S/N, Goiânia, Goiás 74605-050, Brazil.
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16
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Alves DDSMM, Gonçalves GS, Moraes AS, Alves LM, Carmo Neto JRD, Hecht MM, Nitz N, Gurgel-Gonçalves R, Bernardes G, Castro AMD, Chalita MR, Vinaud MC. The first Acanthamoeba keratitis case in the Midwest region of Brazil: diagnosis, genotyping of the parasite and disease outcome. Rev Soc Bras Med Trop 2018; 51:716-719. [PMID: 30304286 DOI: 10.1590/0037-8682-0010-2018] [Citation(s) in RCA: 5] [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: 02/02/2018] [Accepted: 07/05/2018] [Indexed: 11/22/2022] Open
Abstract
We report an Acanthamoeba keratitis case associated with the use of contact lens in a 28-year-old female from Brasília, Brazil. Samples from corneal scraping and contact lens case were used for culture establishment, PCR amplification, and partial sequencing (fragments of ~400kb) of small subunit rDNA; both culture and PCR were positive. The sequence analyses of the cornea and of isolates from the contact lens case showed similarity with the T4 genotype. To the best of our knowledge, this is the first report of T4 Acanthamoeba keratitis case from the Midwest region of Brazil.
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Affiliation(s)
- Daniella de Sousa Mendes Moreira Alves
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brasil
| | - Gustavo Souza Gonçalves
- Departamento de Oftalmologia, Faculdade de Medicina, Universidade de Brasília, Brasília, DF, Brasil
| | - Aline Silva Moraes
- Laboratório Interdisciplinar de Biociências, Faculdade de Medicina, Universidade de Brasília, Brasília, DF, Brasil
| | | | - José Rodrigues do Carmo Neto
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brasil
| | - Mariana Machado Hecht
- Laboratório Interdisciplinar de Biociências, Faculdade de Medicina, Universidade de Brasília, Brasília, DF, Brasil
| | - Nadjar Nitz
- Laboratório Interdisciplinar de Biociências, Faculdade de Medicina, Universidade de Brasília, Brasília, DF, Brasil
| | - Rodrigo Gurgel-Gonçalves
- Laboratório de Parasitologia Médica e Biologia de Vetores, Faculdade de Medicina, Universidade de Brasília, Brasília, DF, Brasil
| | - Geisa Bernardes
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brasil
| | - Ana Maria de Castro
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brasil
| | - Maria Regina Chalita
- Departamento de Oftalmologia, Faculdade de Medicina, Universidade de Brasília, Brasília, DF, Brasil
| | - Marina Clare Vinaud
- Laboratório de Estudos da Relação Parasito-Hospedeiro, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brasil
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17
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Milhomem AC, Alves LM, de Souza Jorge IM, Costa EL, Vinaud MC, de Souza Lino Júnior R. Facial trauma reconstruction with polymethyl methacrylate-A case report. J Cosmet Dermatol 2018; 17:1037-1040. [PMID: 30246431 DOI: 10.1111/jocd.12786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/15/2018] [Accepted: 08/20/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Polymethyl methacrylate (PMMA) is a dermatologic filler commonly used in esthetic procedures. However, it can also be used in more severe cases such as reconstruction of facial traumas. AIMS The aim of this report was to describe the use of PMMA in a nasal reconstruction of a patient victim of an automobilist accident which presented previous rejection of autograft. PATIENT A young female patient, 26 y, victim of automobilist accident, with no bone support due to trauma both in the mandibulum and maxilla, presented fracture of several facial bones. Presented rejection of a bone autograft from the skullcap implanted on the nose. In order to harmonize the facial aspect, a nasal fill with PMMA for the anatomic reconstruction of the nose was performed. RESULTS AND CONCLUSIONS PMMA promoted the recovery of facial and nasal esthetic characteristics of the patient ensuring a satisfactory result.
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Affiliation(s)
| | - Luciano Moreira Alves
- Radiologist from the Urgencies Hospital of Aparecida de Goiani (HUAPA), Goiânia, GO, Brazil
| | | | | | - Marina Clare Vinaud
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, GO, Brazil
| | - Ruy de Souza Lino Júnior
- Tropical Pathology and Public Health Institute, Federal University of Goias, Goiânia, GO, Brazil
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18
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Milhomem AC, Souza AJSD, Silva HM, Vinaud MC, Oliveira MAPD, Machado JR, Lino Júnior RDS. Histopathologic aspects of experimental cysticercosis and in situ cytokines profile in C57BL/6 mice. Arq Neuro-Psiquiatr 2018; 76:339-345. [DOI: 10.1590/0004-282x20180032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 01/31/2018] [Indexed: 02/01/2023]
Abstract
ABSTRACT Neurocysticercosis (NCC) is one of the parasitic infections that most affects the central nervous system. The knowledge regarding its immunopathogenesis and pathophysiology needs broadening. Taenia crassiceps cysticerci are used as the NCC experimental model. The aim of this work was to describe the general pathological processes and the in situ cytokine profile in C57BL/6 mice inoculated intracranially with viable T. crassiceps cysticerci. The histopathology analysis showed cysticerci in the extraparenchymal and intraventricular region, mononuclear inflammatory infiltration surrounding the parasite, microgliosis and meningitis. The analysis of the in situ immune profiles showed a predominance of the Th2 response. The IL-4 and IL-10 dosages were significantly increased in the infected group. The decrease in the INF-gamma dosage reflects the immunomodulation from the cysticerci. In conclusion, a T. crassiceps NCC infection in C57BL/6 mice triggers an inflammatory response, a predominance of Th2 type in situ profile, with mononuclear inflammatory cell infiltration, meningitis and microgliosis.
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19
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de Andrade Picanço G, de Lima NF, Fraga CM, da Costa TL, Isac E, Ambrosio J, Castillo R, Vinaud MC. A benzimidazole derivative (RCB15) in vitro induces the alternative energetic metabolism and glycolysis in Taenia crassiceps cysticerci. Acta Trop 2017; 176:288-292. [PMID: 28865900 DOI: 10.1016/j.actatropica.2017.08.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/22/2017] [Accepted: 08/23/2017] [Indexed: 02/08/2023]
Abstract
The emergence of resistance to albendazole has encouraged the search for effective alternatives for cysticercosis and other parasitosis treatment. RCB15 is a benzimidazole derivative that may be used against such diseases. The aim of this study was to determine the in vitro effect of RCB15 on the alternative energetic pathways of Taenia crassiceps cysticerci. The cysticerci were in vitro exposed to albendazole sulphoxide (ABZSO) or RCB15 at different concentrations during 24h. The cysticerci extract and the culture medium were analyzed through spectrophotometry and high performance liquid chromatography as to detect glucose, urea, creatinine and organic acids of the energetic metabolism. The drugs did not influence the protein catabolism. Fatty acids oxidation was enhanced through significantly higher acetate concentrations in the groups treated with RCB15 and ABZSO. Beta-hydroxybutyrate concentrations were decreased which indicates the use of fatty acids towards acetyl-CoA synthesis. There was a decrease in glucose uptake and pyruvate concentrations. The absence of lactate indicates the use of pyruvate in gluconeogenesis. Therefore it is possible to conclude that RCB15 enhanced the alternative energetic pathways of cysticerci in vitro exposed to different concentration, with emphasis on the fatty acids catabolism.
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20
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Vinaud MC, Nogueira KS, Fraga CM, da Costa TL, de Castro AM. Benznidazole induces in vitro anaerobic metabolism in Trypanosoma cruzi epimastigotes. APJTD 2017. [DOI: 10.12980/apjtd.7.2017d7-256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Nasareth JM, Fraga CM, Lima NF, Picanço GA, Costa TL, Lino-Junior RS, Vinaud MC. In vivo treatment with nitazoxanide induces anaerobic metabolism in experimental intraperitoneal cysticercosis. Parasitol Res 2017; 116:3037-3041. [PMID: 28914356 DOI: 10.1007/s00436-017-5614-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 09/05/2017] [Indexed: 01/23/2023]
Abstract
Taenia crassiceps cysticerci are used as experimental model to study the host-parasite relationship and treatment of cysticercosis. One of the described mode of actions of nitazoxanide (NTZ) is to block the pyruvate ferredoxine oxidoreductase (PFOR) enzyme which is an essential enzyme to the parasite metabolism. The aim of this study was to determine the in vivo influence of one dosage of NTZ on the energetic metabolism of T. crassiceps cysticerci. Thirty days after the intraperitoneal inoculation of T. crassiceps cysticerci, BALB/c mice were orally treated with 7.5 mg/kg of NTZ. The control group was treated with physiologic solution (NaCl 0.9%). After 24 h, the animals were euthanized and the cysticerci were removed, washed, and processed for biochemical analysis. The organic acids detection occurred through high-performance liquid chromatographic and spectrophotometric analysis. While there was no difference in the glucose dosages, it was possible to observe a significant increase in the lactate concentrations and a decrease in the pyruvate concentrations of the NTZ-treated groups when compared to the control group. Also, there was a decrease in the urea and alpha-ketoglutarate concentrations. This probably occurred due to the impairment of the parasite's PFOR and nitroreductases leading an impairment of the mitochondrial aerobic pathways. In conclusion, the in vivo NTZ treatment leads to an increase in the lactic fermentation and to a decrease in the protein catabolism in T. crassiceps cysticerci.
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Affiliation(s)
- Joelma M Nasareth
- Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-050, Brazil
| | - Carolina M Fraga
- Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-050, Brazil
| | - Nayana F Lima
- Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-050, Brazil
| | - Guaraciara A Picanço
- Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-050, Brazil
| | - Tatiane L Costa
- Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-050, Brazil
| | - Ruy S Lino-Junior
- Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-050, Brazil
| | - Marina Clare Vinaud
- Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-050, Brazil.
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22
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Rezende HHA, Storchilo HR, Lima JAS, Gomes AR, Gomes TC, Souza JYD, Avelino MM, Amaral WND, Vinaud MC, Castro AMD. Nursing infant with acquired toxoplasmosis in the first months of life - a case report. Rev Inst Med Trop Sao Paulo 2017; 59:e63. [PMID: 28902298 PMCID: PMC5574628 DOI: 10.1590/s1678-9946201759063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 06/07/2017] [Indexed: 11/22/2022] Open
Abstract
Toxoplasmosis is caused by Toxoplasma gondii and the probability of
this infection occurring in the first months of life is usually low because its
transmission is related to eating habits. A 6-month-old nursing infant was diagnosed
with acute toxoplasmosis, which was identified through anti- T.
gondii IgA, IgM and low-avidity IgG serologic assays, polymerase chain
reaction (PCR) and mouse bioassay test although its mother was seronegative. This
serological divergence between mother and child led us to interview the mother
regarding epidemiological factors. During this interview, she reported that she had
given her 2-month-old baby a piece of undercooked beef to suck on. After some time,
the baby presented fever and cervical lymphadenitis. This report emphasizes the
importance of serological surveys of toxoplasmosis in nursing infants presenting with
fever and lymphadenitis, in view of the possible acquisition of toxoplasmosis in the
first months of life.
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Affiliation(s)
- Hanstter Hallison Alves Rezende
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Laboratório de Estudos da Relação Parasito-Hospedeiro, Goiânia, Goiás, Brazil
| | - Heloísa Ribeiro Storchilo
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Laboratório de Estudos da Relação Parasito-Hospedeiro, Goiânia, Goiás, Brazil
| | - Jaqueline Ataíde Silva Lima
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Laboratório de Estudos da Relação Parasito-Hospedeiro, Goiânia, Goiás, Brazil
| | - Antônio Roberto Gomes
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Laboratório de Estudos da Relação Parasito-Hospedeiro, Goiânia, Goiás, Brazil
| | - Taynara Cristina Gomes
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Laboratório de Estudos da Relação Parasito-Hospedeiro, Goiânia, Goiás, Brazil
| | - Jéssica Yonara de Souza
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Laboratório de Estudos da Relação Parasito-Hospedeiro, Goiânia, Goiás, Brazil
| | - Mariza Martins Avelino
- Universidade Federal de Goiás, Faculdade de Medicina, Hospital das Clínicas, Goiânia, Goiás, Brazil
| | - Waldemar Naves do Amaral
- Universidade Federal de Goiás, Faculdade de Medicina, Hospital das Clínicas, Goiânia, Goiás, Brazil
| | - Marina Clare Vinaud
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Laboratório de Estudos da Relação Parasito-Hospedeiro, Goiânia, Goiás, Brazil
| | - Ana Maria de Castro
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Laboratório de Estudos da Relação Parasito-Hospedeiro, Goiânia, Goiás, Brazil
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Pereira ÍM, Lima SB, Freitas ADA, Vinaud MC, Junior RDSL. EXPERIMENTAL SUBCUTANEOUS CYSTICERCOSIS BY Taenia crassiceps IN BALB/c AND C57BL/6 MICE. Rev Inst Med Trop Sao Paulo 2017; 58:55. [PMID: 27410915 PMCID: PMC4964324 DOI: 10.1590/s1678-9946201658055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 03/09/2016] [Indexed: 05/29/2023] Open
Abstract
Human cysticercosis is one of the most severe parasitic infections affecting tissues. Experimental models are needed to understand the host-parasite dynamics involved throughout the course of the infection. The subcutaneous experimental model is the closest to what is observed in human cysticercosis that does not affect the central nervous system. The aim of this study was to evaluate macroscopically and microscopically the experimental subcutaneous cysticercosis caused by Taenia crassiceps cysticerci in BALB/c and C57BL/6 mice. Animals were inoculated in the dorsal subcutaneous region and macroscopic and microscopic aspects of the inflammatory process in the host-parasite interface were evaluated until 90 days after the inoculation (DAI). All the infected animals presented vesicles containing cysticerci in the inoculation site, which was translucent at 7 DAI and then remained opaque throughout the experimental days. The microscopic analysis showed granulation tissue in BALB/c mice since the acute phase of infection evolving to chronicity without cure, presenting 80% of larval stage cysticerci at 90 DAI. While C57BL/6 mice presented 67% of final stage cysticerci at 90 DAI, the parasites were surrounded by neutrophils evolving to the infection control. It is possible to conclude that the genetic features of susceptibility (BALB/c) or resistance (C57BL/6) were confirmed in an experimental subcutaneous model of cysticercosis.
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Affiliation(s)
- Íria Márcia Pereira
- Tropical Pathology and Public Health Institute (UFG), rua 235 s/n, Setor Universitario 74650-050 Goiânia, GO, Brasil. E-mails: ; ; ; ;
| | - Sarah Buzaim Lima
- Tropical Pathology and Public Health Institute (UFG), rua 235 s/n, Setor Universitario 74650-050 Goiânia, GO, Brasil. E-mails: ; ; ; ;
| | - Aline de Araújo Freitas
- Tropical Pathology and Public Health Institute (UFG), rua 235 s/n, Setor Universitario 74650-050 Goiânia, GO, Brasil. E-mails: ; ; ; ;
| | - Marina Clare Vinaud
- Tropical Pathology and Public Health Institute (UFG), rua 235 s/n, Setor Universitario 74650-050 Goiânia, GO, Brasil. E-mails: ; ; ; ;
| | - Ruy de Souza Lino Junior
- Tropical Pathology and Public Health Institute (UFG), rua 235 s/n, Setor Universitario 74650-050 Goiânia, GO, Brasil. E-mails: ; ; ; ;
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Silva HM, Vinaud MC, Lino RDS. Experimental neurocysticercosis: absence of IL-4 induces lower encephalitis. Arq Neuropsiquiatr 2017; 75:96-102. [PMID: 28226078 DOI: 10.1590/0004-282x20160194] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 10/31/2016] [Indexed: 11/22/2022]
Abstract
Methods BALB/c (WT) and BALB/c (IL-4-KO) mice were inoculated intracranially with Taenia crassiceps cysticerci and euthanized at 7, 30, 60 and 90 days later, the encephala removed and histopathologically analyzed. Results The absence of IL-4 induced greater parasitism. In the initial phase of the infection, IL-4-KO showed a lower intensity in the inflammatory infiltration of polimorphonuclear cells in the host-parasite interface and intra-parenquimatous edema. The IL-4-KO animals, in the late phase of the infection, showed lower intensity of ventriculomegaly, encephalitis, and meningitis, and greater survival of the parasites in comparison with the WT animals. Conclusion The absence of IL-4 induced lower inflammatory infiltration, ventriculomegaly and perivasculitis in experimental NCC.
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Affiliation(s)
- Hidelberto Matos Silva
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia GO, Brasil.,Centro Universitário UNIRG, Faculdade de Medicina, Gurupi TO, Brasil
| | - Marina Clare Vinaud
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia GO, Brasil
| | - Ruy de Souza Lino
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia GO, Brasil
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Silva LD, Arrúa EC, Pereira DA, Fraga CM, Costa TLD, Hemphill A, Salomon CJ, Vinaud MC. Elucidating the influence of praziquantel nanosuspensions on the in vivo metabolism of Taenia crassiceps cysticerci. Acta Trop 2016; 161:100-5. [PMID: 27269203 DOI: 10.1016/j.actatropica.2016.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/24/2016] [Accepted: 06/03/2016] [Indexed: 12/21/2022]
Abstract
The aim of this work was to develop nanosuspensions of praziquantel (PZQ) and to evaluate their influence on the energetic metabolism of cysticerci inoculated in BALB/c mice. We analyzed metabolic alterations of glycolytic pathways and the tricarboxylic acid cycle in the parasite. The nanosuspensions were prepared by precipitation and polyvinyl alcohol (PVA), poloxamer 188 (P188) and poloxamer 407 (P407) were used as stabilizers. Nanosuspension prepared with PVA had a particle size of 100nm, while P188- and P407-based nanosuspensions had particle sizes of 74nm and 285nm, respectively. The zeta potential was -8.1, -8.6, and -13.2 for the formulations stabilized with PVA, P188 and P407, respectively. Treatments of T. crassiceps cysticerci-infected mice resulted in an increase in glycolysis organic acids, and enhanced the partial reversion of the tricarboxylic acid cycle, the urea cycle and the production of ketonic bodies in the parasites when compared to the groups treated with conventional PZQ. These data suggest that PZQ nanosuspensions greatly modified the energetic metabolism of cysticerci in vivo. Moreover, the remarkable metabolic alterations produced by the stabilizers indicate that further studies on nanoformulations are required to find potentially suitable nanomedicines.
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Fantinati MS, Mendonça DEO, Fantinati AMM, Santos BFD, Reis JCO, Afonso CL, Vinaud MC, Lino Júnior RDS. Low intensity ultrasound therapy induces angiogenesis and persistent inflammation in the chronic phase of the healing process of third degree burn wounds experimentally induced in diabetic and non-diabetic rats. Acta Cir Bras 2016; 31:463-71. [DOI: 10.1590/s0102-865020160070000006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 06/22/2016] [Indexed: 12/25/2022] Open
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Alves DDSMM, Moraes AS, Alves LM, Gurgel-Gonçalves R, Lino Junior RDS, Cuba-Cuba CA, Vinaud MC. Experimental infection of T4 Acanthamoeba genotype determines the pathogenic potential. Parasitol Res 2016; 115:3435-40. [PMID: 27164833 DOI: 10.1007/s00436-016-5105-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 04/11/2016] [Accepted: 04/29/2016] [Indexed: 12/26/2022]
Abstract
T4 is the Acanthamoeba genotype most related to cases of granulomatous amoebic encephalitis (GAE) in immunocompromised patients and of keratitis in contact lens wearers. The determination of the pathogenic potential of Acanthamoeba clinical and environmental isolates using experimental models is extremely important to elucidate the capacity of free-living organisms to establish and cause disease in hosts. The aim of this study was to compare and evaluate the histopathology and culture between two different routes of experimental infection of T4 Acanthamoeba isolated from environmental and clinical source in mice (intracranial and intraperitoneal). Swiss isogenic healthy mice were inoculated with 10(4) trophozoites by intracranial (IC) and intraperitoneal (IP) routes and observed during 21 days. The brains from animals inoculated by the IC route were collected and from the animals of the IP inoculation group, the brains, livers, kidneys, spleens, and lungs were removed. The organs were prepared and appropriately divided to be evaluated with histopathology and culture. There was no significant difference between the inoculation routes in terms of isolates recovery (χ(2) = 0.09; p = 0.76). In the IC group, isolate recovery rate was significantly higher in histopathology than the one achieved by culture (χ(2) = 6.45; p < 0.01). Experimental infection revealed that all isolates inoculated could be considered invasive because it was possible to recover evolutive forms of Acanthamoeba in both routes. This work represents the first in vivo pathogenicity assay of primary isolation source in Central region of Brazil showing in vivo pathogenicity and hematogenous spread capacity of these protozoa, improving the knowledge on free-living amoebae isolates.
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Affiliation(s)
- Daniella de Sousa Mendes Moreira Alves
- Instituto de Patologia Tropical e Saúde Pública (IPTSP), Universidade Federal de Goiás, Rua 235, s/n, Setor Universitário, Goiânia, GO, 74650-050, Brazil.
| | - Aline Silva Moraes
- Laboratório Interdisciplinar de Biociências, Faculdade de Medicina, Universidade de Brasília-UnB, Brasília, Brazil
| | | | - Rodrigo Gurgel-Gonçalves
- Laboratório de Parasitologia Médica e Biologia de Vetores, Faculdade de Medicina, Universidade de Brasília-UnB, Brasília, Brazil
| | - Ruy de Souza Lino Junior
- Instituto de Patologia Tropical e Saúde Pública (IPTSP), Universidade Federal de Goiás, Rua 235, s/n, Setor Universitário, Goiânia, GO, 74650-050, Brazil
| | - César Augusto Cuba-Cuba
- Laboratório de Parasitologia Médica e Biologia de Vetores, Faculdade de Medicina, Universidade de Brasília-UnB, Brasília, Brazil
| | - Marina Clare Vinaud
- Instituto de Patologia Tropical e Saúde Pública (IPTSP), Universidade Federal de Goiás, Rua 235, s/n, Setor Universitário, Goiânia, GO, 74650-050, Brazil
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Vinaud MC, de Andrade LCM, Alves PFM, Fraga CM, Bezerra JCB, de Souza Lino Junior R. In vitro stressing factors altering the TCA cycle and morphology of Taenia crassiceps cysticerci. Asian Pacific Journal of Tropical Disease 2016. [DOI: 10.1016/s2222-1808(15)60984-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Gontijo da Silva M, Clare Vinaud M, de Castro AM. Prevalence of toxoplasmosis in pregnant women and vertical transmission of Toxoplasma gondii in patients from basic units of health from Gurupi, Tocantins, Brazil, from 2012 to 2014. PLoS One 2015; 10:e0141700. [PMID: 26558622 PMCID: PMC4641701 DOI: 10.1371/journal.pone.0141700] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 10/12/2015] [Indexed: 12/21/2022] Open
Abstract
Introduction Toxoplasmosis is a parasitary disease that presents high rates of gestational and congenital infection worldwide being therefore considered a public health problem and a neglected disease. Objective To determine the prevalence of toxoplasmosis amongst pregnant women and vertical transmission of Toxoplasma gondii in their newborns attended in the Basic Units of Health (BUH) from the city of Gurupi, state of Tocantins, Brazil. Methods A prevalence study was performed, including 487 pregnant women and their newborns attended in the BUH of the urban zone of the city of Gurupi, state of Tocantins, Brazil, during the period from February 2012 to February 2014. The selection of the pregnant women occurred by convenience. In the antenatal admission they were invited to participate in this study. Three samples of peripheral blood were collected for the detection of specific anti-T. gondii IgG, IgM and IgA through ELISA, for the polimerase chain reaction (PCR) and IgG avidity during pregnancy. When IgM antibodies were detected the fetal and newborn infection investigation took place. The newborn was investigated right after birth and after one year of age through serology and PCR to confirm/exclude the vertical transmission. The analyses were performed in the Studies of the Host-Parasite Relationship Laboratory (LAERPH, IPTSP-UFG), Goiania, state of Goias, Brazil. The results were inserted in a data bank in Epi-Info 3.3.2 statistic software in which the analysis was performed with p≤5%. Results The toxoplasmosis infection was detected in 68.37% (333/487, CI95%: 64.62–72.86). The toxoplasmosis chronic infection prevalence was of 63.03% (307/487, CI95%: 58.74–67.32). The prevalence of maternal acute infection was of 5.33% (26/487; CI95%: 3.3–7.3) suspected by IgM antibodies detection in the peripheral blood. The prevalence of confirmed vertical transmission was of 28% (7/25; CI95%: 10.4–45.6). Conclusions These results show an elevated prevalence of toxoplasmosis in pregnant women and vertical transmission of T. gondii in the city of Gurupi, state of Tocantins, Brazil.
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Affiliation(s)
- Marcos Gontijo da Silva
- University Center UNIRG, Parasitology Laboratory, Av. Rio de Janeiro entre ruas 9 e 10, Centro, Gurupi—TO, Brazil
- * E-mail:
| | - Marina Clare Vinaud
- Federal University of Goias (UFG), Tropical Medicine and Public Health Institute (IPTSP), Tropical Medicine and Public Health Post-Graduation Programme, Studies of the Host-Parasite Relationship Laboratory (LAERPH), Rua 235 esq. 1a. Av. s/n Setor Leste Universitário, CEP 74605–050, Goiânia, Brazil
| | - Ana Maria de Castro
- Federal University of Goias (UFG), Tropical Medicine and Public Health Institute (IPTSP), Tropical Medicine and Public Health Post-Graduation Programme, Studies of the Host-Parasite Relationship Laboratory (LAERPH), Rua 235 esq. 1a. Av. s/n Setor Leste Universitário, CEP 74605–050, Goiânia, Brazil
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Rezende HHA, Avelar JB, Storchilo HR, Vinaud MC, Castro AMD. Evaluation of the accuracy of parasitological techniques for the diagnosis of intestinal parasites in cats. Rev Bras Parasitol Vet 2015; 24:471-4. [DOI: 10.1590/s1984-29612015069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 04/27/2015] [Indexed: 11/21/2022]
Abstract
Abstract The accuracy of the parasitological techniques of Willis, Hoffman-Pons-Janer or Lutz (HPLJ), Sheather and Faust was evaluated in fecal samples from stray cats caught by the Zoonosis Control Center in Goiânia, Goiás, Brazil. These four techniques were applied separately to analyze 154 fecal samples, and their accuracy was analyzed based on an evaluation of their sensitivity, specificity, positive and negative predictive values, and Kappa index, resulting in the selection of the Willis technique as the nominal gold standard. Of the 154 samples, 115 (74.68%) tested positive for intestinal parasites. The analysis of the frequency of positivity indicated that the HPLJ technique detected 86.1% of the positive samples and was the closest to the gold standard. The analysis of the accuracy of the techniques was evaluated using the most prevalent parasites. The Sheather technique showed the highest accuracy in the detection of Ancylostomatidae, while the Sheather and HPLJ techniques showed similar accuracies in the detection of Cystoisospora spp. when compared to the gold standard. Lastly, the Faust technique showed the highest accuracy in the detection of Toxoplasma gondii when compared to the gold standard. This study underscores the importance of combining parasitological techniques in the diagnosis of intestinal parasites in cats.
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Silva MGD, Câmara JT, Vinaud MC, Castro AMD. Epidemiological factors associated with seropositivity for toxoplasmosis in pregnant women from Gurupi, State of Tocantins, Brazil. Rev Soc Bras Med Trop 2015; 47:469-75. [PMID: 25229288 DOI: 10.1590/0037-8682-0127-2014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 08/11/2014] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Knowledge of the prevalence and risk factors for Toxoplasma gondii dissemination among pregnant women is relevant because the parasite can be spread from mother to infant. The objective of this study was to assess the epidemiology and risk factors of toxoplasmosis in pregnant women from Gurupi, State of Tocantins, Brazil, from February 2012 to June 2013. METHODS The study population included 487 pregnant women. Sociodemographic, dietary and cultural data were collected using a standardized and validated form. Peripheral blood was collected for serologic testing using the ELISA test (IgM/IgG antibodies). The data were analyzed by comparing seropositivity with risk factors using crude and adjusted odds ratios. RESULTS The prevalence rate for IgG and IgM antibodies was 68.7% and 5.7%, respectively. Sociodemographic characteristics associated with toxoplasmosis risk included the following: education level ≤ 8 years (OR: 6.612; CI: 1.450-30.144), age ≥ 30 years (OR: 5.273; CI: 1.166-23.844), working outside the home (OR: 1.604; CI: 1.015-2.536), and family income of two minimum wages or lower (OR: 2.700; CI: 1.891-8.182). Regarding dietary habits, there was a significant association of seropositivity with meat intake (OR: 1.78; CI: 1.149-4.080), cutting vegetables without washing the cutting board beforehand (OR: 2.051; CI: 1.165-3.614), frequent intake of vegetables (OR: 2.051; CI: 1.368-3.006) and in natura milk intake (OR: 2.422; CI: 1.014-5.785). CONCLUSIONS The high prevalence rates of toxoplasmosis in Gurupi are related to age, raw meat and in natura milk intake, as well as education level, working outside the home, and poor hygienic habits during meal preparation.
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Affiliation(s)
| | | | - Marina Clare Vinaud
- Departamento de Parasitologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Ana Maria de Castro
- Departamento de Parasitologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
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Sylvio M, Barbaresco D’Alessandro AA, Avelar JB, Vinaud MC, Lino Junior RDS, Barreto Bezerra JC, Castro AMD. EXPERIMENTAL TOXOPLASMOSIS: EVALUATION OF THE HEPATIC DAMAGE IN MURINES. Rev Patol Trop 2014. [DOI: 10.5216/rpt.v43i3.32212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Duarte AS, Barreto Bezerra JC, Almeida Silva LD, Neves BJ, Andrade C, Vinaud MC, Mello Silva CC. Repositioning of new potential schistosomicidal drugs using chemogenomic strategy. BMC Proc 2014. [PMCID: PMC4204113 DOI: 10.1186/1753-6561-8-s4-p55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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de Almeida Leandro L, Fraga CM, de Souza Lino R, Vinaud MC. Partial reverse of the TCA cycle is enhanced in Taenia crassiceps experimental neurocysticercosis after in vivo treatment with anthelminthic drugs. Parasitol Res 2014; 113:1313-7. [PMID: 24481905 DOI: 10.1007/s00436-014-3770-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 01/10/2014] [Indexed: 12/12/2022]
Abstract
Neurocysticercosis (NCC) is the most common helminthic infection and neglected disease of the central nervous system. It is the leading cause of acquired epilepsy and seizures worldwide. Therefore, to study this important neglected disease, it is important to use experimental models. There is no report in the literature on how the parasite's metabolism reacts to antihelminthic treatment when it is still within the central nervous system of the host. Therefore, the aim of this study was to investigate the energetic metabolism of cysticerci experimentally inoculated in the encephala of BALB/c mice after treatment with low dosages (not sufficient to kill the parasite) of albendazole (ABDZ) and praziquantel (PZQ). BALB/c mice were intracranially inoculated with Taenia crassiceps cysticerci and, after 30 days, received treatment with low dosages of ABDZ and PZQ. After 24 h of treatment, the mice were euthanized, and the cysticerci were removed and analyzed through high-performance liquid chromatography (HPLC) to quantify the organic acids related to the energetic metabolism of the parasite. The partial reverse of the TCA cycle was enhanced by the ABDZ and PZQ treatments both with the higher dosage, as the organic acids of this pathway were significantly increased when compared to the control group and to the other dosages. In conclusion, it was possible to detect the increase of this pathway in the parasites that were exposed to low dosages of ABDZ and PZQ, as it is a mechanism that would amplify the energy production in a hostile environment.
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Affiliation(s)
- Leticia de Almeida Leandro
- Tropical Pathology and Public Health Institute, Federal University of Goiás, Rua 235 s/n, Setor Universitário, Goiás, 74650-050, Brazil
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de Moraes JM, Eterno de Oliveira Mendonça D, Moura VBL, Oliveira MAP, Afonso CL, Vinaud MC, Bachion MM, de Souza Lino R. Anti-inflammatory effect of low-intensity laser on the healing of third-degree burn wounds in rats. Lasers Med Sci 2012; 28:1169-76. [PMID: 23053250 DOI: 10.1007/s10103-012-1213-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 09/28/2012] [Indexed: 11/30/2022]
Abstract
Third-degree burn wounds are considered severe injuries because they destroy all the skin layers and may affect subcutaneous tissues, fasciae, muscles, and bones. To favor the healing process of the injured tissues, it is very useful to diminish the occurrence of the inflammatory process. The present study was aimed at comparing the effect of different energetic densities of AlGaInP laser on the inflammatory process and in the healing of third-degree burn wounds in Wistar rats. This study was approved by the Ethics Committee, in which 36 adult male rats were selected and suffered the induction of third-degree burn injury. These rats were divided as follows: group 1-control (treated with silver sulfadiazine), group 2-received energy density of 3 J/cm(2), and group 3-received energy density of 6 J/cm(2). All animals daily received an occlusive bandage with silver sulfadiazine and 8 % papain. The laser therapy was performed alternatively three times a week. The animals were evaluated on the 3rd, 7th, 14th, and 21st days after the initial lesion and euthanized for the macroscopic, histologic, and morphometric analysis. A higher production of collagen was observed at 7 days and a greater re-epithelialization at 21 days in group 3 (6 J/cm(2)). Furthermore, the latter when compared to the other groups presented macroscopically a better aspect of the scar at 21 days with more granulation tissue and fibrosis. We conclude that the AlGaInP laser used in dosages of 3 and 6 J/cm(2) favors the healing of third-degree burn wounds induced in rats.
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Affiliation(s)
- Juliana Medeiros de Moraes
- Biological Sciences Institute, Federal University of Goias (UFG), Campus II-Samambaia, saída para Nerópolis-Km 13, Goiânia, GO, 74001-970, Brazil
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Matos-Silva H, Reciputti BP, Paula ECD, Oliveira AL, Moura VBL, Vinaud MC, Oliveira MAP, Lino-Júnior RDS. Experimental encephalitis caused by Taenia crassiceps cysticerci in mice. Arq Neuropsiquiatr 2012; 70:287-92. [PMID: 22358311 DOI: 10.1590/s0004-282x2012005000010] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 11/01/2011] [Indexed: 11/22/2022]
Abstract
OBJECTIVES To present the experimental model of neurocysticercosis (NCC) caused by Taenia crassiceps cysticerci, to describe the inflammatory process, susceptibility, or resistance of BALB/c and C57BL/6 mice to this infection, and to describe the host-parasite relationship. METHODS The animals were intracranially inoculated with initial stage T. crassiceps cysticerci. They were euthanized at 7, 30, 60, and 90 days after the inoculation. Their encephala were removed for the histopathologic analysis, classification of the parasites, and inflammatory lesions. RESULTS Experimental NCC was observed on both mice lineages. BALB/c mice presented inflammatory lesions with greater intensity, inducing necrosis on late stage parasites, and with an acute inflammation pattern, while C57BL/6 mice showed greater capability on provoking early necrosis in the cysticerci, which showed a chronic inflammation pattern. CONCLUSIONS This experimental model induced NCC on mice with characteristic inflammation and lesions. C57BL/6 mice were able to induce precocious necrosis of the parasites presenting inflammatory lesions with lower intensity.
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Affiliation(s)
- Hidelberto Matos-Silva
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
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Garcia da Veiga Jardim EA, Lopes Moura VB, Vinaud MC, Lino Junior RDS, Coelho Linhares GF. IDENTIFICAÇÃO MOLECULAR DE Cysticercus bovis EM DIFERENTES ESTÁGIOS DO PROCESSO DE INTERAÇÃO PARASITO-HOSPEDEIRO. Rev Patol Trop 2012. [DOI: 10.5216/rpt.v40i4.16764] [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: 11/20/2022] Open
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Fraga CM, Costa TL, Bezerra JCB, de Souza Lino R, Vinaud MC. Taenia crassiceps: host treatment alters glycolisis and tricarboxilic acid cycle in cysticerci. Exp Parasitol 2011; 130:146-51. [PMID: 22127328 DOI: 10.1016/j.exppara.2011.11.001] [Citation(s) in RCA: 19] [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] [Received: 06/13/2011] [Revised: 11/05/2011] [Accepted: 11/15/2011] [Indexed: 11/17/2022]
Abstract
Human cysticercosis by Taenia crassiceps is rare although it is considered of zoonotic risk, especially to immunocompromised individuals. Albendazole and praziquantel are widely used and effective in its treatment. Their active forms inhibit the glucose uptake by the parasite and induce muscle contractions that alter its glycogen levels interfering in the energetic metabolism of the parasite and leading to its death. The aim of this study was to evaluate alterations in glycolysis, the tricarboxylic acid cycle and glucose concentrations caused by low dosage treatments of the hosts with albendazole and praziquantel. Therefore, T. crassiceps intraperitoneally infected mice were treated by gavage feeding with 5.75 or 11.5 mg/kg of albendazole and 3.83 or 7.67 mg/kg of praziquantel. The treated mice were euthanized after 24 h and the cysticerci collected were morphologically classified into initial, larval or final phases. Concentrations of the organic acid produced and glucose were evaluated to detect alterations into the glycolysis and the tricarboxylic acid cycle pathways through chromatography and spectrophotometry. The low dosage treatment caused a partial blockage of the glucose uptake by the cysticerci in spite of the non significant difference between its concentrations. An activation of the tricarboxylic acid cycle was noted in the cysticerci that received the treatment due to an increase in the production of citrate, malate and α-ketoglutarate and the consumption of oxaloacetate, succinate and fumarate. The detection of α-ketoglutarate indicates that the cysticerci which were exposed to the drugs after host treatment present different metabolic pathways than the ones previously described after in vitro treatment.
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Affiliation(s)
- Carolina Miguel Fraga
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235, s/n, Setor Universitário, Goiânia, Goiás, Brasil CEP: 74650-050, Brazil
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Vinaud MC, Ferreira CS, Lino Junior RDS, Bezerra JCB. Taenia crassiceps: Fatty acids oxidation and alternative energy source in in vitro cysticerci exposed to anthelminthic drugs. Exp Parasitol 2009; 122:208-11. [DOI: 10.1016/j.exppara.2009.03.015] [Citation(s) in RCA: 18] [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] [Received: 07/25/2008] [Revised: 03/23/2009] [Accepted: 03/27/2009] [Indexed: 10/20/2022]
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Vinaud MC, Lino Junior RDS, Barreto Bezerra JC. Atividade de Stryphnodendron polyphyllum, uma planta do cerrado do Brasil, contra hemócitos de Biomphalaria glabrata, um hospedeiro intermediário de Schistosoma mansoni. Rev Patol Trop 2008. [DOI: 10.5216/rpt.v37i3.5065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Vinaud MC, Ferreira CS, de Souza Lino Junior R, Bezerra JCB. Taenia crassiceps: Energetic and respiratory metabolism from cysticerci exposed to praziquantel and albendazole in vitro. Exp Parasitol 2008; 120:221-6. [DOI: 10.1016/j.exppara.2008.07.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2008] [Revised: 07/17/2008] [Accepted: 07/18/2008] [Indexed: 11/30/2022]
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Lino Junior RDS, Vinaud MC, Sugita JS, Alves LD, Reis MAD, De Paula Antunes Teixeira V. ANÁLISE MORFOMÉTRICA DA CISTICERCOSE ENCEFÁLICA E CARDÍACA EM INDIVÍDUOS AUTOPSIADOS. Rev Patol Trop 2008. [DOI: 10.5216/rpt.v33i3.3459] [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: 11/20/2022] Open
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Dias JR, De Sordi CC, De Sordi CC, Lino Junior RDS, Lino Junior RDS, Vinaud MC, Vinaud MC, Lopes GP, Lopes GP, Silveira Filho LG, Silveira Filho LG, Dos Reis MA, Dos Reis MA, De Paula Antunes Teixeira V, De Paula Antunes Teixeira V. EFETIVIDADE DO RAIO X SIMPLES NO DIAGNÓSTICO PÓS-MORTE DA CISTICERCOSE HUMANA. Rev Patol Trop 2008. [DOI: 10.5216/rpt.v33i1.3250] [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: 11/20/2022] Open
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Lino Junior RDS, Guimarães Faleiros AC, Cavellani CL, Vinaud MC, Oliveira FA, Guimarães JV, Dos Reis MA, Antunes Teixeira VDP. ANATOMOPATHOLOGIC FINDINGS IN CARDIAC CYSTICERCOSIS: A POSTMORTEM STUDY. Rev Patol Trop 2008. [DOI: 10.5216/rpt.v36i3.3174] [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: 11/20/2022] Open
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Lino-Junior RDS, Faleiros ACG, Vinaud MC, Oliveira FAD, Guimarães JV, Reis MAD, Teixeira VDPA. Anatomopathological aspects of neurocysticercosis in autopsied patients. Arq Neuropsiquiatr 2008; 65:87-91. [PMID: 17420834 DOI: 10.1590/s0004-282x2007000100019] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2006] [Accepted: 10/26/2006] [Indexed: 11/22/2022]
Abstract
The aim of this paper was to describe the occurrence and morphology of neurocysticercosis (NCC) in autopsies. We revised 2218 autopsies performed at the School Hospital from Federal University of Triangulo Mineiro, 1970-2003. Data referring to age, gender and color of patients were reported and NCC was microscopically and macroscopically analyzed. We found 53 (2.4%) NCC cases. The mean age was 50 years old, 34 (64.1%) individuals were male and 36 (67.9%) white. Macroscopically, 17 cysticerci were analyzed. The most frequent location was meningocortical in 12 (70.6%) cases. Microscopically, the cysticerci presented an ovoid shape, containing the larvae preserved in 4 (23.5%) cases or in destruction degrees in 13 (76.5%) cases. Therefore, in NCC was found several general pathologic processes (necrosis, interstitial deposits, fibrosis, gliosis, inflammation) amongst which are highlighted beta-fibrillose in 13 (76.5%) cases associated to inflammatory process in 16 (94.1%) cases caused by the parasite, not yet related to NCC, and calcification present in viable and destruction parasites.
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Affiliation(s)
- Ruy de Souza Lino-Junior
- General Pathology Disciplines, Federal University of Triangulo Mineiro, Uberabe, Minas Gerais, Brazil.
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Vinaud MC, C. Santos S, H Ferri P, Lino Junior RDS, Barreto Bezerra JC. AVALIAÇÃO DA ATIVIDADE LARVICIDA DEPLANTAS FITOTERÁPICAS DO CERRADO DOGÊNERO Stryphnodendron SPP. SOBRE MIRACÍDIOS E CERCÁRIAS DE Schistosoma mansoni. Rev Patol Trop 2007. [DOI: 10.5216/rpt.v34i2.1919] [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: 11/20/2022] Open
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de Oliveira FA, Teixeira VDPA, Lino RDS, Vinaud MC, dos Reis MA. Aspectos macroscópicos da cardiopatia chagásica crônica no envelhecimento. Arq Bras Cardiol 2007; 88:486-90. [PMID: 17546282 DOI: 10.1590/s0066-782x2007000400020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2006] [Accepted: 10/05/2006] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE To describe the macroscopic characteristics of chronic Chagas heart disease in autopsied elderly. METHODS The elderly studied were 60 or older. Twenty of them had chronic Chagas heart disease (CHD) and positive serology for the disease, and 14 had no heart disease (WHD) nor morphological changes suggestive of it and were serologically negative for Chagas disease. RESULTS The CHD elderly had cardiac weight greater than the WHD (385 +/- 141.1 vs 306.8 +/- 62.1g, respectively; p > 0.05), in addition to significantly higher heart weight-to-body weight ratio (0.71% [0.5-1.42%] vs 0.59% [0.47-0.91%] p < 0.05). When compared, the CHD elderly presented lower fibrous thickening and/or atherosclerosis in the ascending aorta, mitral and tricuspid valves, and left and right coronaries than the WHD elderly. In the aortic and mitral valves, the lesions were significantly less severe (p < 0.05). Left ventricular apical lesion was observed in 45% of the CHD elderly, and intracardiac thrombosis in the left ventricle was found in 10% of them. CONCLUSION Fibrous thickening and/or atherosclerosis were found to be less severe in the valves and arteries of the CHD elderly. Moreover, heart weight and intracardiac thrombosis frequency were lower than those detailed in the literature for non-elderly individuals.
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Camilo MA, de Oliveira FA, Saldanha JC, Junior RDSL, Vinaud MC, Dos Reis MA, Antunes Teixeira VDP. Morphometric characteristics of Malassezia sp. stained with picrosirius. Rev Iberoam Micol 2007; 24:82-3. [PMID: 17592900] [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: 05/16/2023] Open
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