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Hyngstrom AS, Nguyen JN, Gutterman DD, Schmit BD, Klevenow EA, Durand MJ. Non-Invasive Estimation of Skeletal Muscle Oxygen Consumption Rate and Microvascular Reactivity in Chronic Stroke Survivors using Near Infrared Spectroscopy. J Appl Physiol (1985) 2024. [PMID: 38601999 DOI: 10.1152/japplphysiol.00093.2024] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/03/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Understanding post-stroke changes in skeletal muscle oxidative metabolism and microvascular reactivity could help create therapeutic targets that optimize rehabilitative interventions. Due to disuse atrophy, we hypothesized that basal muscle oxygen consumption rate and microvascular endothelial function would be impaired in the tibialis anterior (TA) muscle of the affected leg of chronic stroke survivors compared to the non-affected leg and vs. matched controls. METHODS Fifteen chronic stroke survivors (10 female) and 15 matched controls (9 female) completed this study. A near infrared spectroscopy oximeter measured tissue oxygen saturation (StO2) of the TA in both legs of stroke survivors and the dominant leg of controls. A cuff was placed around the thigh and inflated to 225 mmHg for five minutes while StO2 was continuously measured. The rate of change in StO2 was calculated during cuff occlusion and immediately post-cuff release. RESULTS The rate of oxygen desaturation was similar between the legs of the stroke survivors (paretic -0.12±0.04 %∙s-1 vs non-paretic -0.16±011 %∙s-1; p=0.49), but the paretic leg had a reduced desaturation rate vs. controls (-0.25±0.18%∙s-1; p=0.007 vs. paretic leg). After cuff release, there was a greater oxygen resaturation rate in the non-paretic leg compared to the paretic leg (3.13±2.08 %∙s-1 vs. 1.60±1.11 %∙s-1, respectively; p=0.01). The control leg had a similar resaturation rate vs. the non-paretic leg (control = 3.41±1.79%∙s-1; p=0.69) but was greater than the paretic leg (p=0.003). CONCLUSION The TA in the paretic leg had an impaired muscle oxygen consumption rate and reduced microvascular endothelial function compared to controls.
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Affiliation(s)
- Allison S Hyngstrom
- Department of Physical Therapy, Marquette University, Milwaukee, WI, United States
| | - Jennifer N Nguyen
- Department of Biomedical Engineering, Marquette University, Milwaukee, WI, United States
| | - David D Gutterman
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Brian D Schmit
- Department of Biomedical Engineering, Marquette University, Milwaukee, WI, United States
| | - Emilie A Klevenow
- Athletic and Human Performance Research Center, Marquette University, Milwaukee, WI, United States
| | - Matthew J Durand
- Physical Medicine and Rehabilitation, Medical College of Wisconsin, Milwaukee, WI, United States
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Kurtz ML, Orona NS, Lezón C, Defosse VC, Astort F, Maglione GA, Boyer PM, Tasat DR. Decreased immune response in undernourished rats after air pollution exposure. Environ Toxicol Pharmacol 2024; 107:104400. [PMID: 38408716 DOI: 10.1016/j.etap.2024.104400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 02/28/2024]
Abstract
Children are highly vulnerable subpopulation to malnutrition and air pollution. We investigate, in a rat nutritional growth retardation (NGR) model, the impact of Residual Oil Fly Ash (ROFA) on the lung immune response using in vitro and ex vivo methods. In vitro: Alveolar macrophages (AM) were isolated from Control (C) and NGR animals, cultured and treated with ROFA (1-100 µg/ml) for 24 h. Ex vivo: C and NGR rats were intranasally instilled with ROFA (1 mg/kg BW) or PBS. 24 h post-exposure AM were isolated and cultured. ROFA-treatment increased superoxide anion production and TNFα secretion in C-AM in vitro, though for NGR-AM this response was lower. A similar pattern was observed for TNFα and IL-6 secretion in ex vivo experiments. Regarding the antioxidant response, although NGR-AM showed increased Nrf2, after ROFA instillation an attenuated activation was observed. To conclude, chronic undernutrition altered AM response to ROFA affecting immune responsiveness to air pollutants.
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Affiliation(s)
- Melisa Lidia Kurtz
- Laboratorio de Bio-Toxicología Ambiental, Instituto de Tecnologías Emergentes y Ciencias Aplicadas, Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín- CONICET, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
| | - Nadia Soledad Orona
- Laboratorio de Bio-Toxicología Ambiental, Instituto de Tecnologías Emergentes y Ciencias Aplicadas, Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín- CONICET, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Christian Lezón
- Cátedra de Fisiología, Facultad de Odontología, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Verónica Cecilia Defosse
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Instituto de Agrobiotecnología y Biología Molecular (IABIMO), INTA-CONICET, Buenos Aires, Argentina; Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Francisco Astort
- Laboratorio de Bio-Toxicología Ambiental, Instituto de Tecnologías Emergentes y Ciencias Aplicadas, Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín- CONICET, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Guillermo Alberto Maglione
- Laboratorio de Bio-Toxicología Ambiental, Instituto de Tecnologías Emergentes y Ciencias Aplicadas, Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín- CONICET, Buenos Aires, Argentina
| | - Patricia Mónica Boyer
- Cátedra de Fisiología, Facultad de Odontología, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Deborah Ruth Tasat
- Laboratorio de Bio-Toxicología Ambiental, Instituto de Tecnologías Emergentes y Ciencias Aplicadas, Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín- CONICET, Buenos Aires, Argentina; Cátedra de Histología y Embriología, Facultad de Odontología, Universidad de Buenos Aires, Buenos Aires, Argentina
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Dalise S, Tropea P, Galli L, Sbrana A, Chisari C. Muscle function impairment in cancer patients in pre-cachexia stage. Eur J Transl Myol 2020; 30:8931. [PMID: 32782760 PMCID: PMC7385693 DOI: 10.4081/ejtm.2019.8931] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 02/28/2020] [Accepted: 03/28/2020] [Indexed: 12/18/2022] Open
Abstract
Cancer cachexia has been reported to be directly responsible for at least 20% of cancer deaths. Management of muscle wasting in cancer-associated cachexia appears to be of pivotal importance for survival of patients. In this regard, it would be interesting to identify before its patent appearance eventual functional markers of muscle damage, to plan specific exercise protocols to counteract cachexia. The muscle function of 13 oncologic patients and 15 controls was analyzed through: i) analysis of the oxidative metabolism, indirectly evaluated trough dosage of blood lactate levels before and after a submaximal incremental exercise on a treadmill; ii) analysis of strength and, iii) endurance, in both lower and upper limbs muscles, employing an isokinetic dynamometer. Statistical analyses were carried out to compare the muscle activities between groups. Analysis of oxidative metabolism during the incremental exercise on a treadmill showed that patients performed a shorter exercise than controls. Lactate levels were significantly higher in patients both at baseline and after the task. Muscle strength analysis in patients group showed a reduction of Maximum Voluntary Contraction during the isometric contraction and, a tendency to fatigue during endurance task. Data emerging from this study highlight an impairment of muscle oxidative metabolism in subjects affected by a pre-cachexia stage of cancer. A trend of precocious fatigability and an impairment of muscle strength production were also observed. This evidence underlines the relevance of assessing muscle function in order to develop novel rehabilitative approaches able to counteract motor impairment and eventually to prevent cachexia in these patients.
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Affiliation(s)
- Stefania Dalise
- Unit of Neurorehabilitation, University Hospital of Pisa, Pisa, Italy
| | - Peppino Tropea
- Department of Neurorehabilitation Sciences Casa Cura Policlinico, Milan, Italy
| | - Luca Galli
- Unit of Oncology 2, University Hospital of Pisa, Pisa, Italy
| | - Andrea Sbrana
- Unit of Oncology 2, University Hospital of Pisa, Pisa, Italy
| | - Carmelo Chisari
- Unit of Neurorehabilitation, University Hospital of Pisa, Pisa, Italy
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Abstract
Low-intensity aerobic training seems to have positive effects on muscle strength, endurance and fatigue in Becker Muscular Dystrophy (BMD) patients. We describe the case of a 33-year old BMD man, who performed a four-week aerobic training. Extensive functional evaluations were executed to monitor the efficacy of the rehabilitative treatment. Results evidenced an increased force exertion and an improvement in muscle contraction during sustained exercise. An improvement of walk velocity, together with agility, endurance capacity and oxygen consumption during exercise was observed. Moreover, an enhanced metabolic efficiency was evidenced, as shown by reduced lactate blood levels after training. Interestingly, CK showed higher levels after the training protocol, revealing possible muscle damage. In conclusion, aerobic training may represent an effective method improving exercise performance, functional status and metabolic efficiency. Anyway, a careful functional assessment should be taken into account as a useful approach in the management of the disease’s rehabilitative treatment.
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Affiliation(s)
- Caterina Tramonti
- Unit of Neurorehabilitation, Department of Neuroscience, University Hospital of Pisa , Italy
| | - Bruno Rossi
- Unit of Neurorehabilitation, Department of Neuroscience, University Hospital of Pisa , Italy
| | - Carmelo Chisari
- Unit of Neurorehabilitation, Department of Neuroscience, University Hospital of Pisa , Italy
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Maurya SK, Bal NC, Sopariwala DH, Pant M, Rowland LA, Shaikh SA, Periasamy M. Sarcolipin Is a Key Determinant of the Basal Metabolic Rate, and Its Overexpression Enhances Energy Expenditure and Resistance against Diet-induced Obesity. J Biol Chem 2015; 290:10840-9. [PMID: 25713078 DOI: 10.1074/jbc.m115.636878] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [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: 01/07/2015] [Indexed: 11/06/2022] Open
Abstract
Sarcolipin (SLN) is a novel regulator of sarcoplasmic reticulum Ca(2+) ATPase (SERCA) in muscle. SLN binding to SERCA uncouples Ca(2+) transport from ATP hydrolysis. By this mechanism, SLN promotes the futile cycling of SERCA, contributing to muscle heat production. We recently showed that SLN plays an important role in cold- and diet-induced thermogenesis. However, the detailed mechanism of how SLN regulates muscle metabolism remains unclear. In this study, we used both SLN knockout (Sln(-/-)) and skeletal muscle-specific SLN overexpression (Sln(OE)) mice to explore energy metabolism by pair feeding (fixed calories) and high-fat diet feeding (ad libitum). Our results show that, upon pair feeding, Sln(OE) mice lost weight compared with the WT, but Sln(-/-) mice gained weight. Interestingly, when fed with a high-fat diet, Sln(OE) mice consumed more calories but gained less weight and maintained a normal metabolic profile in comparison with WT and Sln(-/-) mice. We found that oxygen consumption and fatty acid oxidation were increased markedly in Sln(OE) mice. There was also an increase in both mitochondrial number and size in Sln(OE) muscle, together with increased expression of peroxisome proliferator-activated receptor δ (PPARδ) and PPAR γ coactivator 1 α (PGC1α), key transcriptional activators of mitochondrial biogenesis and enzymes involved in oxidative metabolism. These results, taken together, establish an important role for SLN in muscle metabolism and energy expenditure. On the basis of these data we propose that SLN is a novel target for enhancing whole-body energy expenditure.
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Affiliation(s)
- Santosh K Maurya
- the Sanford Burnham Medical Research Institute at Lake Nona, Orlando, Florida 32827
| | - Naresh C Bal
- From the Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio 43210 and
| | - Danesh H Sopariwala
- From the Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio 43210 and
| | - Meghna Pant
- From the Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio 43210 and
| | - Leslie A Rowland
- From the Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio 43210 and
| | - Sana A Shaikh
- From the Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio 43210 and
| | - Muthu Periasamy
- the Sanford Burnham Medical Research Institute at Lake Nona, Orlando, Florida 32827
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Abstract
Myotonic Dystrophy type 1 (DM1) is a dominantly inherited disease comprehending multiple features. Fatigue and exhaustion during exercise often represent significant factors able to negatively influence their compliance to rehabilitation programs. Mitochondrial abnormalities and a significant increase in oxidative markers, previously reported, suggest the hypothesis of a mitochondrial functional impairment. The study aims at evaluating oxidative metabolism efficiency in 18 DM1 patients and in 15 healthy subjects, through analysis of lactate levels at rest and after an incremental exercise test. The exercise protocol consisted of a submaximal incremental exercise performed on an electronically calibrated treadmill, maintained in predominantly aerobic condition. Lactate levels were assessed at rest and at 5, 10 and 30 minutes after the end of the exercise. The results showed early exercise-related fatigue in DM1 patients, as they performed a mean number of 9 steps, while controls completed the whole exercise. Moreover, while resting values of lactate were comparable between the patients and the control group (p=0.69), after the exercise protocol, dystrophic subjects reached higher values of lactate, at any recovery time (p<0,05). These observations suggest an early activation of anaerobic metabolism, thus evidencing an alteration in oxidative metabolism of such dystrophic patients. As far as intense aerobic training could be performed in DM1 patients, in order to improve maximal muscle oxidative capacity and blood lactate removal ability, then, this safe and validate method could be used to evaluate muscle oxidative metabolism and provide an efficient help on rehabilitation programs to be prescribed in such patients.
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Affiliation(s)
- Caterina Tramonti
- Unit of Neurorehabilitation, Department of Neuroscience, University Hospital of Pisa , Italy
| | - Stefania Dalise
- Unit of Neurorehabilitation, Department of Neuroscience, University Hospital of Pisa , Italy
| | - Federica Bertolucci
- Unit of Neurorehabilitation, Department of Neuroscience, University Hospital of Pisa , Italy
| | - Bruno Rossi
- Unit of Neurorehabilitation, Department of Neuroscience, University Hospital of Pisa , Italy
| | - Carmelo Chisari
- Unit of Neurorehabilitation, Department of Neuroscience, University Hospital of Pisa , Italy
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