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Coêlho LF, Casaro MB, Ribeiro WR, Mendes E, Murata G, Xander P, Lino-dos-Santos-Franco A, Oliveira FA, Ferreira CM. A short-term high-sugar diet is an aggravating factor in experimental allergic contact dermatitis. Heliyon 2023; 9:e21225. [PMID: 38034704 PMCID: PMC10682547 DOI: 10.1016/j.heliyon.2023.e21225] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 10/08/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023] Open
Abstract
Allergic contact dermatitis (ACD) is an inflammatory skin reaction whose incidence has increased and has been associated with a dietary pattern rich in saturated fats and refined sugars. Considering the increased incidence of ACD and the lack of research about the influence of a short-term high-sugar diet on dermatitis, our aim is to improve understanding of the influence of a high-sugar diet on ACD. We introduced a diet rich in sugar fifteen days before inducing contact dermatitis with oxazolone, in mice, and maintained it until the end of the experiment, which lasted three weeks in total. The dermatitis model increased cholesterol and triglycerides in the liver, and the combination of diet and dermatitis increased weight and worsened liver cholesterol measurements. Furthermore, the high-sugar diet increased the production of IL-6, IFN-γ and TNF-α in the skin, which may be involved in the increase in epithelial skin thickness observed in experimental ACD.
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Affiliation(s)
- Leila F. Coêlho
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Mateus B. Casaro
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Willian R. Ribeiro
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Eduardo Mendes
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Gilson Murata
- Nephrology Division, Medical Investigation Laboratory-29 (LIM-29), Medical School, University of São Paulo (FM-USP), São Paulo, Brazil
| | - Patrícia Xander
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | | | - Fernando A. Oliveira
- Cellular and Molecular Neurobiology Laboratory (LaNeC) - Center for Mathematics, Computing and Cognition (CMCC), Federal University of ABC (UFABC), São Bernardo do Campo, Brazil
| | - Caroline M. Ferreira
- Department of Pharmaceutical Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
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2
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de Sousa Melo SR, Dos Santos LR, Morais JBS, Cruz KJC, de Oliveira ARS, da Silva NC, de Sousa GS, Payolla TB, Murata G, Bordin S, Henriques GS, do Nascimento Marreiro D. Leptin and its relationship with magnesium biomarkers in women with obesity. Biometals 2022; 35:689-697. [PMID: 35546213 DOI: 10.1007/s10534-022-00393-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 12/02/2021] [Accepted: 04/13/2022] [Indexed: 11/27/2022]
Abstract
Some studies have demonstrated the participation of leptin in magnesium metabolism. On the other hand, there is evidence of the role of magnesium in the leptin intracellular signaling pathway. Therefore, the aim of this study was to investigate the existence of a relationship between serum leptin concentrations and magnesium biomarkers in women with obesity. Case-control study involving 108 women aged between 20 and 50 years, divided into two groups: obese (n = 52) and control (n = 56). Body weight, height and waist circumference, body mass index, dietary magnesium intake, magnesium biomarkers and serum leptin concentrations were measured. Serum leptin concentrations showed a statistically significant difference between groups (p < 0.001). Mean values of magnesium intake were lower than intake recommended, and with no statistically significant difference between two groups (p > 0.05). Women with obesity had lower plasma and erythrocyte magnesium concentrations than control group did (p < 0.001). Magnesium concentrations found in the urine of women with obesity were higher than the control group was, with a statistically significant difference (p < 0.001). There was a correlation between serum leptin and magnesium biomarkers (p < 0.001). Women with obesity show an inadequate magnesium nutritional status characterized by low plasma and erythrocyte concentrations and high concentrations in urine, and they also have high serum leptin concentrations. Thus, it was possible to observe a correlation between hyperleptinemia and magnesium biomarkers, requiring further studies to determine whether the dysfunction of this hormone can influence the compartmentalization of the mineral in obese organisms.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Gilson Murata
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Silvana Bordin
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | | | - Dilina do Nascimento Marreiro
- Department of Nutrition, Health Sciences Center, Federal University of Piauí, Rua Hugo Napoleão, 665, Ed. Palazzo Reale, Apto 2001, Jockey, Teresina, PI, CEP 64048-320, Brazil.
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3
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Souza ROO, Damasceno FS, Marsiccobetre S, Biran M, Murata G, Curi R, Bringaud F, Silber AM. Fatty acid oxidation participates in resistance to nutrient-depleted environments in the insect stages of Trypanosoma cruzi. PLoS Pathog 2021; 17:e1009495. [PMID: 33819309 PMCID: PMC8049481 DOI: 10.1371/journal.ppat.1009495] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/15/2021] [Accepted: 03/23/2021] [Indexed: 11/18/2022] Open
Abstract
Trypanosoma cruzi, the parasite causing Chagas disease, is a digenetic flagellated protist that infects mammals (including humans) and reduviid insect vectors. Therefore, T. cruzi must colonize different niches in order to complete its life cycle in both hosts. This fact determines the need of adaptations to face challenging environmental cues. The primary environmental challenge, particularly in the insect stages, is poor nutrient availability. In this regard, it is well known that T. cruzi has a flexible metabolism able to rapidly switch from carbohydrates (mainly glucose) to amino acids (mostly proline) consumption. Also established has been the capability of T. cruzi to use glucose and amino acids to support the differentiation process occurring in the insect, from replicative non-infective epimastigotes to non-replicative infective metacyclic trypomastigotes. However, little is known about the possibilities of using externally available and internally stored fatty acids as resources to survive in nutrient-poor environments, and to sustain metacyclogenesis. In this study, we revisit the metabolic fate of fatty acid breakdown in T. cruzi. Herein, we show that during parasite proliferation, the glucose concentration in the medium can regulate the fatty acid metabolism. At the stationary phase, the parasites fully oxidize fatty acids. [U-14C]-palmitate can be taken up from the medium, leading to CO2 production. Additionally, we show that electrons are fed directly to oxidative phosphorylation, and acetyl-CoA is supplied to the tricarboxylic acid (TCA) cycle, which can be used to feed anabolic pathways such as the de novo biosynthesis of fatty acids. Finally, we show as well that the inhibition of fatty acids mobilization into the mitochondrion diminishes the survival to severe starvation, and impairs metacyclogenesis.
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Affiliation(s)
- Rodolpho Ornitz Oliveira Souza
- University of São Paulo, Laboratory of Biochemistry of Tryps–LaBTryps, Department of Parasitology, Institute of Biomedical Sciences–São Paulo, São Paulo, Brazil
| | - Flávia Silva Damasceno
- University of São Paulo, Laboratory of Biochemistry of Tryps–LaBTryps, Department of Parasitology, Institute of Biomedical Sciences–São Paulo, São Paulo, Brazil
| | - Sabrina Marsiccobetre
- University of São Paulo, Laboratory of Biochemistry of Tryps–LaBTryps, Department of Parasitology, Institute of Biomedical Sciences–São Paulo, São Paulo, Brazil
| | - Marc Biran
- Centre de Résonance Magnétique des Systèmes Biologiques (RMSB), Université de Bordeaux, Bordeaux, France
| | - Gilson Murata
- University of São Paulo, Department of Physiology, Institute of Biomedical Sciences–São Paulo, São Paulo, Brazil
| | - Rui Curi
- University of São Paulo, Department of Physiology, Institute of Biomedical Sciences–São Paulo, São Paulo, Brazil
- Cruzeiro do Sul University, Interdisciplinary Post-Graduate Program in Health Sciences—São Paulo, São Paulo, Brazil
| | - Frédéric Bringaud
- Laboratoire de Microbiologie Fondamentale et Pathogénicité (MFP), Université de Bordeaux, Bordeaux, France
| | - Ariel Mariano Silber
- University of São Paulo, Laboratory of Biochemistry of Tryps–LaBTryps, Department of Parasitology, Institute of Biomedical Sciences–São Paulo, São Paulo, Brazil
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4
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Dos Santos CMM, Diniz VLS, Bachi ALL, Dos Santos de Oliveira LC, Ghazal T, Passos MEP, de Oliveira HH, Murata G, Masi LN, Martins AR, Levada-Pires AC, Curi R, Hirabara SM, Sellitti DF, Pithon-Curi TC, Gorjão R. Moderate physical exercise improves lymphocyte function in melanoma-bearing mice on a high-fat diet. Nutr Metab (Lond) 2019; 16:63. [PMID: 31528182 PMCID: PMC6739998 DOI: 10.1186/s12986-019-0394-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 09/06/2019] [Indexed: 02/16/2023] Open
Abstract
Background Obesity can lead to a chronic systemic inflammatory state that increases the risk of cancer development. Therefore, this study aimed to evaluate the alterations in tumor non-infiltrated lymphocytes function and melanoma growth in animals maintained on a high-fat diet and/or moderate physical exercise program in a murine model of melanoma. Methods Female mice were randomly divided into eight groups: 1) normolipidic control (N), 2) normolipidic + melanoma (NM), 3) high-fat control (H), 4) high-fat + melanoma (HM), 5) normolipidic control + physical exercise (NE), 6) normolipidic melanoma + physical exercise (NEM), 7) high-fat control + physical exercise (HE), and 8) high-fat melanoma + physical exercise (HEM). After 8 weeks of diet treatment and/or moderate physical exercise protocol, melanoma was initiated by explanting B16F10 cells into one-half of the animals. Results Animals fed a high-fat diet presented high-energy consumption (30%) and body weight gain (H and HE vs N and NE, 37%; HM and HEM vs NM and NEM, 73%, respectively), whether or not they carried melanoma explants. Although the tumor growth rate was higher in animals from the HM group than in animals from any other sedentary group, it was reduced by the addition of a physical exercise regimen. We also observed an increase in stimulated peripheral lymphocyte proliferation and a decrease in the T-helper 1 response in the HEM group. Conclusions The results of the present study support the hypothesis that altering function of tumor non-infiltrated lymphocytes via exercise-related mechanisms can slow melanoma progression, indicating that the incorporation of a regular practice of moderate-intensity exercises can be a potential strategy for current therapeutic regimens in treating advanced melanoma.
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Affiliation(s)
- Cesar Miguel Momesso Dos Santos
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Vinicius Leonardo Sousa Diniz
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - André Luis Lacerda Bachi
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil.,2Department of Otorrhynolaringology, Federal University of São Paulo, São Paulo, Brazil.,Brazilian Institute of Teaching and Research in Pulmonary and Exercise Immunology (IBEPIPE), São Paulo, Brazil
| | - Laiane Cristina Dos Santos de Oliveira
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Tamara Ghazal
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Maria Elizabeth Pereira Passos
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Heloisa Helena de Oliveira
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Gilson Murata
- 4Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 1374, CEP: 05508-900, Butanta, São Paulo, Brazil
| | - Laureane Nunes Masi
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Amanda Roque Martins
- 4Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 1374, CEP: 05508-900, Butanta, São Paulo, Brazil
| | - Adriana Cristina Levada-Pires
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Rui Curi
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Sandro Massao Hirabara
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Donald F Sellitti
- 5Department of Medicine, Uniformed Services University of Health Sciences, 4301 Jones Bridge Road, Bethesda, MD USA
| | - Tania Cristina Pithon-Curi
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
| | - Renata Gorjão
- 1Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, CEP: 01506 000, Liberdade, São Paulo, Brazil
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5
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Vicente JM, Teixeira CJ, Santos-Silva JC, de Souza DN, Tobar N, Furtuoso FS, Adabo IG, Sodré FS, Murata G, Bordin S, Anhê GF. The absence of lactation after pregnancy induces long-term lipid accumulation in maternal liver of mice. Life Sci 2019; 217:261-270. [DOI: 10.1016/j.lfs.2018.12.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 12/11/2018] [Accepted: 12/14/2018] [Indexed: 01/17/2023]
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6
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Alves de Lima NC, Ratti BA, Souza Bonfim Mendonça PD, Murata G, Araujo Pereira RR, Nakamura CV, Lopes Consolaro ME, Estivalet Svidzinski TI, Hatanaka E, Bruschi ML, Oliveira Silva SD. Propolis increases neutrophils response against Candida albicans through the increase of reactive oxygen species. Future Microbiol 2018; 13:221-230. [PMID: 29302986 DOI: 10.2217/fmb-2017-0112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To investigate whether Brazilian green propolis improves the immune response against recurrent form isolate recurrent vulvovaginal candidiasis (RVVC) caused by Candida albicans by increasing neutrophil oxidative burst. MATERIALS & METHODS We evaluated oxidant species production, oxygen consumption, microbicidal activity and myeloperoxidase activity in neutrophils previously treated with propolis and activated with different isolates of C. albicans (RVVC), vulvovaginal candidiasis, asymptomatic isolates and the reference strain. RESULTS Propolis significantly increased oxidant species production, oxygen consumption, microbicidal activity and myeloperoxidase activity of neutrophils against different isolates of C. albicans including RVVC isolate that are considered resistant to the microbicidal activity of neutrophils. CONCLUSION Brazilian green propolis may increase neutrophil burst oxidative response to RVVC leading to an efficient removal of C. albicans.
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Affiliation(s)
- Nayara Cristina Alves de Lima
- Bioscience & Physiopathology Graduate Program, Universidade Estadual de Maringá (UEM), Av Colombo 5790, 87025-210 Maringá, PR, Brazil
| | - Bianca Altrao Ratti
- Bioscience & Physiopathology Graduate Program, Universidade Estadual de Maringá (UEM), Av Colombo 5790, 87025-210 Maringá, PR, Brazil
| | | | - Gilson Murata
- Institute of Physical Activity & Sport Sciences, Universidade Cruzeiro do Sul, São Paulo, SP, Brazil
| | - Raphaela Regina Araujo Pereira
- Pharmaceutical Science Graduate Program, Universidade Estadual de Maringá (UEM), Av Colombo 5790, 87025-210 Maringá, PR, Brazil
| | - Celso Vataru Nakamura
- Pharmaceutical Science Graduate Program, Universidade Estadual de Maringá (UEM), Av Colombo 5790, 87025-210 Maringá, PR, Brazil
| | - Marcia Edilaine Lopes Consolaro
- Bioscience & Physiopathology Graduate Program, Universidade Estadual de Maringá (UEM), Av Colombo 5790, 87025-210 Maringá, PR, Brazil
| | | | - Elaine Hatanaka
- Institute of Physical Activity & Sport Sciences, Universidade Cruzeiro do Sul, São Paulo, SP, Brazil
| | - Marcos Luciano Bruschi
- Pharmaceutical Science Graduate Program, Universidade Estadual de Maringá (UEM), Av Colombo 5790, 87025-210 Maringá, PR, Brazil
| | - Sueli de Oliveira Silva
- Bioscience & Physiopathology Graduate Program, Universidade Estadual de Maringá (UEM), Av Colombo 5790, 87025-210 Maringá, PR, Brazil.,Pharmaceutical Science Graduate Program, Universidade Estadual de Maringá (UEM), Av Colombo 5790, 87025-210 Maringá, PR, Brazil
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7
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Mendes E, Acetturi BG, Thomas AM, Martins FDS, Crisma AR, Murata G, Braga TT, Camâra NOS, Franco ALDS, Setubal JC, Ribeiro WR, Valduga CJ, Curi R, Dias-Neto E, Tavares-de-Lima W, Ferreira CM. Prophylactic Supplementation of Bifidobacterium longum 5 1A Protects Mice from Ovariectomy-Induced Exacerbated Allergic Airway Inflammation and Airway Hyperresponsiveness. Front Microbiol 2017; 8:1732. [PMID: 28959241 PMCID: PMC5604069 DOI: 10.3389/fmicb.2017.01732] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 08/24/2017] [Indexed: 12/14/2022] Open
Abstract
Asthma is a chronic inflammatory disease that affects more females than males after puberty, and its symptoms and severity in women change during menstruation and menopause. Recently, evidence has demonstrated that interactions among the microbiota, female sex hormones, and immunity are associated with the development of autoimmune diseases. However, no studies have investigated if therapeutic gut microbiota modulation strategies could affect asthma exacerbation during menstruation and menopause. Here we aimed to examine the preventive effects of a probiotic, Bifidobacterium longum 51A, on airway inflammation exacerbation in allergic ovariectomized mice. We first evaluated the gut microbiota composition and diversity in mice 10 days after ovariectomy. Next, we examined whether re-exposure of ovariectomized allergic mice to antigen (ovalbumin) would lead to exacerbation of lung inflammation. Finally, we evaluated the preventive and treatment effect of B. longum 51A on lung inflammation and airway hyperresponsiveness. Our results showed that whereas ovariectomy caused no alterations in the gut microbiota composition and diversity in this animal model, 10 days after ovariectomy, preventive use administration of B. longum 51A, rather than its use after surgery was capable of attenuate the exacerbated lung inflammation and hyperresponsiveness in ovariectomized allergic mice. This prophylactic effect of B. longum 51A involves acetate production, which led to increased fecal acetate levels and, consequently, increased Treg cells in ovariectomized allergic mice.
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Affiliation(s)
- Eduardo Mendes
- Department of Pharmaceutics Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Universidade Federal de São PauloDiadema, Brazil
| | - Beatriz G Acetturi
- Department of Pharmacology, Institute of Biomedical Sciences I, University of São PauloSão Paulo, Brazil
| | - Andrew M Thomas
- Medical Genomics Laboratory, CIPE/A.C.Camargo Cancer CenterSão Paulo, Brazil.,Department of Biochemistry, Institute of Chemistry, University of São PauloSão Paulo, Brazil.,Bioinformatics Graduate Program, University of São PauloSão Paulo, Brazil
| | - Flaviano Dos S Martins
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Amanda R Crisma
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São PauloSão Paulo, Brazil
| | - Gilson Murata
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São PauloSão Paulo, Brazil
| | - Tárcio T Braga
- Department of Immunology, Institute of Biomedical Sciences IV, University of São PauloSão Paulo, Brazil
| | - Niels O S Camâra
- Department of Immunology, Institute of Biomedical Sciences IV, University of São PauloSão Paulo, Brazil
| | - Adriana L Dos S Franco
- Post Graduate Program in Biophotonics Applied to Health Sciences, Universidade Nove de JulhoSão Paulo, Brazil
| | - João C Setubal
- Department of Biochemistry, Institute of Chemistry, University of São PauloSão Paulo, Brazil
| | - Willian R Ribeiro
- Department of Pharmaceutics Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Universidade Federal de São PauloDiadema, Brazil
| | - Claudete J Valduga
- Department of Pharmacy and Biotechnology, Universidade de Anhanguera de São PauloSão Paulo, Brazil
| | - Rui Curi
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São PauloSão Paulo, Brazil
| | - Emmanuel Dias-Neto
- Medical Genomics Laboratory, CIPE/A.C.Camargo Cancer CenterSão Paulo, Brazil.,Laboratory of Neurosciences (LIM-27), Institute of Psychiatry, Medical School University of São PauloSão Paulo, Brazil
| | - Wothan Tavares-de-Lima
- Department of Pharmacology, Institute of Biomedical Sciences I, University of São PauloSão Paulo, Brazil
| | - Caroline M Ferreira
- Department of Pharmaceutics Sciences, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Universidade Federal de São PauloDiadema, Brazil
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8
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Pantaleão LC, Murata G, Teixeira CJ, Payolla TB, Santos-Silva JC, Duque-Guimaraes DE, Sodré FS, Lellis-Santos C, Vieira JC, de Souza DN, Gomes PR, Rodrigues SC, Anhe GF, Bordin S. Prolonged fasting elicits increased hepatic triglyceride accumulation in rats born to dexamethasone-treated mothers. Sci Rep 2017; 7:10367. [PMID: 28871187 PMCID: PMC5583317 DOI: 10.1038/s41598-017-10642-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 04/12/2017] [Accepted: 08/11/2017] [Indexed: 02/02/2023] Open
Abstract
We investigated the effect of dexamethasone during the last week of pregnancy on glucose and lipid metabolism in male offspring. Twelve-week old offspring were evaluated after fasting for 12-hours (physiological) and 60-hours (prolonged). Physiological fasting resulted in glucose intolerance, decreased glucose clearance after pyruvate load and increased PEPCK expression in rats born to dexamethasone-treated mothers (DEX). Prolonged fasting resulted in increased glucose tolerance and increased glucose clearance after pyruvate load in DEX. These modulations were accompanied by accumulation of hepatic triglycerides (TG). Sixty-hour fasted DEX also showed increased citrate synthase (CS) activity, ATP citrate lyase (ACLY) content, and pyruvate kinase 2 (pkm2), glucose transporter 1 (slc2a1) and lactate dehydrogenase-a (ldha) expressions. Hepatic AKT2 was increased in 60-hour fasted DEX, in parallel with reduced miRNAs targeting the AKT2 gene. Altogether, we show that metabolic programming by prenatal dexamethasone is characterized by an unexpected hepatic TG accumulation during prolonged fasting. The underlying mechanism may depend on increased hepatic glycolytic flux due to increased pkm2 expression and consequent conversion of pyruvate to non-esterified fatty acid synthesis due to increased CS activity and ACLY levels. Upregulation of AKT2 due to reduced miRNAs may serve as a permanent mechanism leading to increased pkm2 expression.
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Affiliation(s)
- Lucas Carminatti Pantaleão
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Gilson Murata
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Caio Jordão Teixeira
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, Brazil
| | - Tanyara Baliani Payolla
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | | | | | - Frhancielly S Sodré
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Camilo Lellis-Santos
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of Sao Paulo, Diadema, Brazil
| | - Juliana Camargo Vieira
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Dailson Nogueira de Souza
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, Brazil
| | - Patrícia Rodrigues Gomes
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Sandra Campos Rodrigues
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Gabriel Forato Anhe
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, Brazil
| | - Silvana Bordin
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil.
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9
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Passos MEP, Alves HHO, Momesso CM, Faria FG, Murata G, Cury-Boaventura MF, Hatanaka E, Massao-Hirabara S, Gorjão R. Differential effects of palmitoleic acid on human lymphocyte proliferation and function. Lipids Health Dis 2016; 15:217. [PMID: 27964715 PMCID: PMC5154135 DOI: 10.1186/s12944-016-0385-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 12/02/2016] [Indexed: 02/13/2023] Open
Abstract
BACKGROUND Palmitoleic acid (PA) is a n-7 monounsaturated fatty acid (MUFA) secreted by adipose tissue and related to decreased insulin resistance in peripheral tissues. Evidences have been shown that PA also decreased proinflammatory cytokine expression in cultured macrophages. Although studies have shown that other fatty acids (FAs) modulate several lymphocyte functions, the specific effect of PA on these cells is unknown. The aim of the present study was to evaluate the possible influence of PA on activation and differentiation of human lymphocytes in comparison to oleic acid (OA). METHODS Human lymphocytes were isolated from peripheral blood of health men and cultured in the presence of growing concentrations of PA or OA (5 to 200 μM), for 24 h. After that, cells were collected and cytotoxicity evaluated by flow cytometry. Then, we analyzed proliferative capacity in lymphocytes treated with non toxic concentrations of PA and OA (25 and 50 μM, respectively), in the presence or absence of concanavalin A (ConA). The Th1/Th2/Th17 cytokine production was determined by the Cytometric Bead Array. CD28 and CD95 surface expression and T regulatory cell percentage were determined by flow cytometry. RESULTS We observed that PA is toxic to lymphocytes above 50 μM. PA promoted a decrease of lymphocyte proliferation stimulated by ConA in both concentrations. PA also decreased CD28 externalization and increased CD95. On the other hand, OA did not alter these parameters. In the same way, PA reduced IL6, IFN-gamma, TNF-alpha and IL17A production in both concentration and IL2 only at 50 μM (in the presence of ConA). OA promoted IFN-gamma reduction in both concentrations and an increase of IL-2, IL4 and IL10 at 25 μM. Both fatty acids decreased the percentage of T regulatory cells. CONCLUSION In conclusion, PA promoted a suppressive effect on lymphocyte proliferation characterized by a decrease of Th1 and Th17 response, and co-stimulatory molecule (CD28). However, OA increased lymphocyte proliferation through IL2 production and Th2 response. These results also show a more suppressive effect of PA on lymphocytes in comparison to OA.
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Affiliation(s)
- M E P Passos
- Institute of Physical Activity and Sport Sciences, Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, CEP: 01506 000, São Paulo, SP, Brazil.
| | - H H O Alves
- Institute of Physical Activity and Sport Sciences, Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, CEP: 01506 000, São Paulo, SP, Brazil
| | - C M Momesso
- Institute of Physical Activity and Sport Sciences, Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, CEP: 01506 000, São Paulo, SP, Brazil
| | - F G Faria
- Institute of Physical Activity and Sport Sciences, Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, CEP: 01506 000, São Paulo, SP, Brazil
| | - G Murata
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - M F Cury-Boaventura
- Institute of Physical Activity and Sport Sciences, Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, CEP: 01506 000, São Paulo, SP, Brazil
| | - E Hatanaka
- Institute of Physical Activity and Sport Sciences, Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, CEP: 01506 000, São Paulo, SP, Brazil
| | - S Massao-Hirabara
- Institute of Physical Activity and Sport Sciences, Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, CEP: 01506 000, São Paulo, SP, Brazil
| | - R Gorjão
- Institute of Physical Activity and Sport Sciences, Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, Liberdade, CEP: 01506 000, São Paulo, SP, Brazil.
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Momesso dos Santos CM, Sato FT, Cury-Boaventura MF, Guirado-Rodrigues SH, Caçula KG, Gonçalves Santos CC, Hatanaka E, de Oliveira HH, Santos VC, Murata G, Borges-Silva CN, Hirabara SM, Pithon-Curi TC, Gorjão R. Effect of regular circus physical exercises on lymphocytes in overweight children. PLoS One 2015; 10:e0120262. [PMID: 25826263 PMCID: PMC4380297 DOI: 10.1371/journal.pone.0120262] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 09/03/2014] [Accepted: 01/21/2015] [Indexed: 12/26/2022] Open
Abstract
Obesity associated with a sedentary lifestyle can lead to changes in the immune system balance resulting in the development of inflammatory diseases. The aim of this study was to compare lymphocyte activation mechanisms between overweight children practicing regular circus physical exercises with non-exercised children. The study comprised 60 pubescent children randomly divided into 4 groups: Overweight Children (OWC) (10.67 ± 0.22 years old), Overweight Exercised Children (OWE) (10.00 ± 0.41 years old), Eutrophic Children (EC) (11.00 ± 0.29 years old) and Eutrophic Exercised Children (EE) (10.60 ± 0.29 years old). OWE and EE groups practiced circus activities twice a week, for 4.3 ± 0.5 and 4.4 ± 0.5 months, respectively. Percentage of T regulatory cells (Treg) and the expression of CD95 and CD25 in CD4+ lymphocytes were evaluated by flow cytometry. Lymphocyte proliferation capacity was measured by [14C]-thymidine incorporation and mRNA expression of IL-35, TGF-beta, IL-2 and IL-10 by real-time PCR. Lymphocyte proliferation was higher in OWC and OWE groups compared with the EC (3509 ± 887; 2694 ± 560, and 1768 ± 208 cpm, respectively) and EE (2313 ± 111 cpm) groups. CD95 expression on lymphocytes was augmented in the EC (953.9 ± 101.2) and EE groups (736.7 ± 194.6) compared with the OWC (522.1 ± 125.2) and OWE groups (551.6 ± 144.5). CTLA-4 expression was also lower in the OWC and OWE groups compared with the EC and EE groups. Percentage of Treg, IL-35, and IL-10 mRNA expression were lower in the OWC and OWE groups compared with the EC and EE groups. In conclusion, overweight children present altered immune system balance characterized by elevated lymphocyte proliferation due to a decrease in T regulatory cell percentage. These effects were partially reverted by moderate physical exercise, as demonstrated by decreased lymphocyte proliferation.
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Affiliation(s)
- Cesar Miguel Momesso dos Santos
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Fábio Takeo Sato
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Maria Fernanda Cury-Boaventura
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Silvia Helena Guirado-Rodrigues
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Kim Guimaraes Caçula
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Cristiane Cassoni Gonçalves Santos
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Elaine Hatanaka
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil; Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Heloisa Helena de Oliveira
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Vinicius Coneglian Santos
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Gilson Murata
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Cristina Neves Borges-Silva
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Sandro Massao Hirabara
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Tania Cristina Pithon-Curi
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil; Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Renata Gorjão
- Institute of Physical Activity Sciences and Sports, Post-Graduate Program in Human Movement Sciences, Cruzeiro do Sul University, São Paulo, Brazil
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Caçula K, Coneglian V, Momesso C, Takeo F, Murata G, Braga M, Alves H, Passos M, Levada-Pires A, Cury-Boaventura M, Gorjão R, Pithon-Curi T. Modulation Of Neutrophil Function By Moderate Aerobic Exercise In Eutrophic And Overweight. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000496262.03633.a7] [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: 11/21/2022]
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Abstract
The effects of glycerol ingestion (GEH) on hydration and subsequent cycle ergometer submaximal load exercise were examined in well conditioned subjects. We hypothesized that GEH would reduce physiologic strain and increase endurance. The purpose of Study I (n = 11) was to determine if pre-exercise GEH (1.2 gm/kg glycerol in 26 ml/kg solution) compared to pre-exercise placebo hydration (PH) (26 ml/kg of aspartame flavored water) lowered heart rate (HR), lowered rectal temperature (Tc), and prolonged endurance time (ET) during submaximal load cycle ergometry. The purpose of Study II (n = 7) was to determine if the same pre-exercise regimen followed by carbohydrate oral replacement solution (ORS) during exercise also lowered HR, Tc, and prolonged ET. Both studies were double-blind, randomized, crossover trials, performed at an ambient temperature of 23.5-24.5 degrees C, and humidity of 25-27%. Mean HR was lower by 2.8 +/- 0.4 beats/min (p = 0.05) after GEH in Study I and by 4.4 +/- 1.1 beats/min (p = 0.01) in Study II. Endurance time was prolonged after GEH in Study I (93.8 +/- 14 min vs. 77.4 +/- 9 min, p = 0.049) and in Study II (123.4 +/- 17 min vs. 99.0 +/- 11 min, p = 0.03). Rectal temperature did not differ between hydration regimens in both Study I and Study II. Thus, pre-exercise glycerol-enhanced hyperhydration lowers HR and prolongs ET even when combined with ORS during exercise. The regimens tested in this study could potentially be adapted for endurance activities.
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Affiliation(s)
- P Montner
- Department of Medicine, Veterans Affairs Medical Center, Albuquerque, NM 87108, USA
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Montner P, Zou Y, Robergs R, Murata G, Stark D, Quinn C, Greene ER. MECHANISMS OF GLYCEROL INDUCED FLUID RETENTION AND HEARTRATE REDUCTION DURING EXERCISE. Med Sci Sports Exerc 1995. [DOI: 10.1249/00005768-199505001-00111] [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: 11/21/2022]
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14
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Timms H, Montner P, Stark D, Murata G, Chick T. 328 BIOELECTRIC IMPEDANCE ANALYSIS CORRELATIONS WITH HYDROSTATIC UNDERWATER WEIGHING AND SHORT TERM HYDRATION CHANGES. Med Sci Sports Exerc 1993. [DOI: 10.1249/00005768-199305001-00330] [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: 11/21/2022]
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Montner P, Stark D, Riedesel M, Murata G, Roberga R, Timms M, Chick T. 14 PRE-EXERCISE CLYCEROL HYDRATION COMBINED WITH STANDARD INTRA-EXERCISE ORAL REPLACEMENT SOLUTION IMPROVES ENDURANCE PERFORMANCE. Med Sci Sports Exerc 1993. [DOI: 10.1249/00005768-199305001-00015] [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: 11/21/2022]
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Minotti JR, Johnson EC, Hudson TL, Zuroske G, Murata G, Fukushima E, Cagle TG, Chick TW, Massie BM, Icenogle MV. Skeletal muscle response to exercise training in congestive heart failure. J Clin Invest 1990; 86:751-8. [PMID: 2394829 PMCID: PMC296789 DOI: 10.1172/jci114771] [Citation(s) in RCA: 163] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
To examine the ability of the skeletal muscle of congestive heart failure (CHF) patients to adapt to chronic exercise, five patients performed localized nondominant wrist flexor training for 28 d. Inorganic phosphate (Pi) and phosphocreatine (PCr) were monitored by magnetic resonance spectroscopy in both forearms at rest and during submaximal wrist flexion exercise at 6, 12, 24, and 36 J.min-1 before and after exercise training. Simultaneous measurements of limb blood flow were made by plethysmography at 12, 24, and 36 J.min-1. Forearm muscle mass and endurance were measured by magnetic resonance imaging and wrist flexion exercise before and after training. The Pi/PCr ratio and pH were calculated from the measured Pi and PCr. Exercise cardiac output, heart rate, plasma norepinephrine, and lactate measured during training were not elevated above resting values, confirming that training was localized to the forearm flexor muscles. After training, muscle bioenergetics, as assessed by the slope of the regression line relating Pi/PCr to submaximal workloads, were improved in the trained forearm of each patient, although muscle mass, limb blood flow, and pH were unchanged. Forearm endurance increased by greater than 260% after training. In the dominant untrained forearm, none of the measured indices were affected. We conclude that localized forearm exercise training in CHF patients improves muscle energetics at submaximal workloads in the trained muscle, an effect which is independent of muscle mass, limb blood flow, or a central cardiovascular response during training. These findings indicate that peripheral muscle metabolic and functional abnormalities in CHF can be improved without altering cardiac performance.
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Affiliation(s)
- J R Minotti
- Veterans Administration Medical Center, Albuquerque, New Mexico
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Abstract
The results of 24 cases of deep wound infection after total knee arthroplasty were reviewed. Twenty-one knees were initially treated with irrigation and debridement. Infection recurred in 15 knees. An increased infection rate occurred after irrigation and debridement in patients in whom the index prosthesis was in place more than 2 weeks. Nine knees (including 7 that had removal after irrigation and debridement) were treated with removal of the infected prosthesis, intravenous antibiotics, and delayed reimplantation. Immediate exchange was done in one knee. There were no recurrences in this group (P less than .001). The final status of the patients included 8 with fusions or resection arthroplasties and 16 with a prosthesis. The average Hospital for Special Surgery knee rating was 41 in patients without a prosthesis and 75 in patients with a prosthesis (P less than .001). The authors conclude that irrigation and debridement is not likely to be successful for treatment of infections when used more than 2 weeks after the initial arthroplasty. Also, two-stage reimplantation for the treatment of infected total knee arthroplasties gives a reliably low recurrence rate and provides a superior clinical result, compared to arthrodesis or resection arthroplasty.
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Affiliation(s)
- S M Teeny
- University of Southern California, Los Angeles
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19
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Minotti J, Johnson E, Hudson T, Zuroske G, Murata G, Fukushima E, Cagle T, Chick T, Massie B, Icenegle M. Skeletal muscle metabolic response to peripheral training in heart failure. J Am Coll Cardiol 1990. [DOI: 10.1016/0735-1097(90)92747-p] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Minotti JR, Johnson EC, Hudson TL, Zuroske G, Fukushima E, Murata G, Wise LE, Chick TW, Icenogle MV. Training-induced skeletal muscle adaptations are independent of systemic adaptations. J Appl Physiol (1985) 1990; 68:289-94. [PMID: 2312472 DOI: 10.1152/jappl.1990.68.1.289] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
To isolate the peripheral adaptations to training, five normal subjects exercised the nondominant (ND) wrist flexors for 41 +/- 11 days, maintaining an exercise intensity below the threshold required for cardiovascular adaptations. Before and after training, intracellular pH and the ratio of inorganic phosphate to phosphocreatine (Pi/PCr) were measured by 31P magnetic resonance spectroscopy. Also maximal O2 consumption (VO2 max), muscle mass, and forearm blood flow were determined by graded systemic exercise, magnetic resonance imaging, and venous occlusion plethysmography, respectively. Blood flow, Pi/PCr, and pH were measured in both forearms at rest and during submaximal wrist flexion at 5, 23, and 46 J/min. Training did not affect VO2 max, exercise blood flow, or muscle mass. Resting pH, Pi/PCr, and blood flow were also unchanged. After training, the ND forearm demonstrated significantly lower Pi/PCr at 23 and 46 J/min. Endurance, measured as the number of contractions to exhaustion, also was increased significantly (63%) after training in the ND forearm. We conclude that 1) forearm training results in a lower Pi/PCr at identical submaximal work loads; 2) this improvement is independent of changes in VO2 max, muscle mass, or limb blood flow; and 3) these differences are associated with improved endurance and may reflect improved oxidative capacity of skeletal muscle.
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Affiliation(s)
- J R Minotti
- Department of Internal Medicine, Veterans Administration Medical Center, Albuquerque, New Mexico 87108
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Murata G. Epidemiological studies on prediction about food poisoning outbreaks by discriminant function -on each year equation and forward prediction. Kansenshogaku Zasshi 1982; 56:867-71. [PMID: 6818287 DOI: 10.11150/kansenshogakuzasshi1970.56.867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Murata G. [Epidemiological studies on prediction about food poisoning outbreak by discriminant function]. Kansenshogaku Zasshi 1982; 56:386-90. [PMID: 6811676 DOI: 10.11150/kansenshogakuzasshi1970.56.386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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23
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Murata G. [Epidemiological studies of food poisoning. 2. Statistical analysis of relationship between weather and food poisoning]. Kansenshogaku Zasshi 1981; 55:649-62. [PMID: 6798149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Murata G. [Epidemiological study of food poisoning: [I]. (sequential changes and annual statistics)]. Kansenshogaku Zasshi 1981; 55:129-39. [PMID: 6790635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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25
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Murata G, Cho SI. Perfusion pressure and human kidney preservation. Transplantation 1978; 25:244-5. [PMID: 349798 DOI: 10.1097/00007890-197805000-00004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
From July 1972 to September 1976, 708 kidneys received through the Interhospital Organ Bank, New England were divided into two groups. Both groups were preserved by continuous pulsatile perfusion. Group 1 (308 kidneys) was maintained at a systolic pressure of 60 mm Hg throughout the preservation period. Group 2 (399 kidneys) was perfused at an initial pressure of 60 mm Hg. The pressure was adjusted to 55 mm Hg at 1 hr, then no further adjustments were made. Comparison reveals that group 2 donors were younger and that the kidneys in group 2 were preserved for longer periods that those in group 1. Both groups had an equivalent number of kidneys that were discarded and kidneys that did not function. The incidence of immediate function was higher in group 2 but this difference is not statistically significant. Compared with conventional preservation, kidneys can be preserved at lower systolic and mean pressures without loss of quality, and in fact, may suffer less damage from perfusion.
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