Mitochondria and microbiota dysfunction in COVID-19 pathogenesis

Saleh, Jumana; Peyssonnaux, Carole; Singh, Keshav K.; Edeas, Marvin

doi:10.1016/j.mito.2020.06.008

Cited by 261 publications

(268 citation statements)

References 106 publications

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“…In our opinion this reduces the likelihood that bed rest, exercise deprivation and loss of muscle mass alone could cause this degree of impairment, raising the possibility of a direct effect of SARS-CoV2 at the muscle level. We only mention the possibility of mitochondrial dysfunction [12], as several ongoing research projects are exploring its role on the pathogenesis of COVID-19 acute phase [13][14][15].…”

Section: Discussionmentioning

confidence: 99%

Assessment of functional capacity with cardiopulmonary exercise testing in non-severe COVID-19 patients at three months follow-up

Clavario

Marzo

Lotti

et al. 2020

Preprint

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IntroductionLong-term effects of Coronavirus Disease of 2019 (COVID-19) and their sustainability in a large number of patients are of the utmost relevance. We aimed to determine: 1)functional capacity of non-severe COVID-19 survivors by cardiopulmonary exercise testing (CPET); 2)those characteristics associated with worse CPET performance.MethodsWe prospectively enrolled the first 150 consecutive subjects with laboratory-confirmed COVID-19 infection discharged alive from March to April 2020 at Azienda Sanitaria Locale (ASL)3, Genoa, Italy. At 3-month from hospital discharge, complete clinical evaluation, trans-thoracic echocardiography, cardiopulmonary exercise testing (CPET), pulmonary function test (PFT), and dominant leg extension (DLE) maximal strength evaluation were performed.ResultsExcluding severe and incomplete/missing cases, 110 patients were analyzed. Median percent predicted peak oxygen uptake (%pVO2) was 90.9(79.2-109.0)%. Thirty-eight(34.5%) patients had %pVO2 below, whereas 72(65.5%) above the 85% predicted value (indicating normality). Median PFT parameters were within normal limits.Eight(21.1%) patients had a mainly respiratory, 9(23.7%) a mainly cardiac, 3(7.9%) a mixed-cardiopulmonary, and 18(47.4%) a non-cardiopulmonary limitation of exercise. Eighty-one(73.6%) patients experimented at least one symptom, without relationship with %pVO2 (p>0.05).Multivariate linear regression analysis showed age (β=0.46, p=0.020), percent weight loss (β=-0.77, p=0.029), active smoke status (β=-7.07, p=0.019), length of hospital stay (β=-0.20, p=0.042), and DLE maximal strength (β=1.65, p=0.039) independently associated with %pVO2.ConclusionsHalf of non-severe COVID-19 survivors show functional capacity limitation mainly explained by muscular impairment, albeit cardiopulmonary causes are possible. These findings call for future research to identify patients at higher risk of long-term effects, that may benefit from careful surveillance and targeted rehabilitation.Take-home messagesat 3-month cardiopulmonary exercise testing 38/110(34.5%) non-severe COVID-19 survivors had percent predicted peak oxygen uptake (%pVO2) < 85% (indicating normality). Half of them had functional capacity limitation mainly explained by muscular impairment.

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Section: Discussionmentioning

confidence: 99%

Assessment of functional capacity with cardiopulmonary exercise testing in non-severe COVID-19 patients at three months follow-up

Clavario

Marzo

Lotti

et al. 2020

Preprint

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“…As all the patients in our study didn’t have an acute coronary syndrome or acute heart failure at admission or in the latest one month, it may suggest that male patients with hypertension are more susceptible to cardiac damage. The possible mechanism is that hypertension-induced cardiac damage is associated with mitochondrial injury, which can be caused by SARS-COV-2 [ 18 , 19 ]. Estrogen may also play an important protective role in the process [ 20 ].…”

Section: Discussionmentioning

confidence: 99%

Cardiac damage in patients with the severe type of coronavirus disease 2019 (COVID-19)

Zhang

Wang

et al. 2020

BMC Cardiovasc Disord

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Background Coronavirus disease 2019 (COVID-19) has become a global pandemic. Studies showed COVID-19 affected not only the lung but also other organs. In this study, we aimed to explore the cardiac damage in patients with COVID-19. Methods We collected data of 100 patients diagnosed as severe type of COVID-19 from February 8 to April 10, 2020, including demographics, illness history, physical examination, laboratory test, and treatment. In-hospital mortality were observed. Cardiac damage was defined as plasma hypersensitive troponin I (hsTnI) over 34.2 pg/ml and/or N-terminal-pro brain natriuretic peptide (NTproBNP) above 450 pg/ml at the age < 50, above 900 pg/ml at the age < 75, or above 1800 pg/ml at the age ≥ 75. Results The median age of the patients was 62.0 years old. 69 (69.0%) had comorbidities, mainly presenting hypertension, diabetes, and cardiovascular disease. Fever (69 [69.0%]), cough (63 [63.0%]), chest distress (13 [13.0%]), and fatigue (12 [12.0%]) were the common initial symptoms. Cardiac damage occurred in 25 patients. In the subgroups, hsTnI was significantly higher in elder patients (≥ 60 years) than in the young (median [IQR], 5.2 [2.2–12.8] vs. 1.9 [1.9–6.2], p = 0.018) and was higher in men than in women (4.2 [1.9–12.8] vs. 2.9 [1.9–7.4], p = 0.018). The prevalence of increased NTproBNP was significantly higher in men than in women (32.1% vs. 9.1%, p = 0.006), but was similar between the elder and young patients (20.0% vs. 25.0%, p = 0.554). After multivariable analysis, male and hypertension were the risk factors of cardiac damage. The mortality was 4.0%. Conclusions Cardiac damage exists in patients with the severe type of COVID-19, especially in male patients with hypertension. Clinicians should pay more attention to cardiac damage.

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“…hydroxyl radical (•OH), and promotes the oxidative stress [41,42]. In this pathological process, the dysfunction of mitochondrial oxidative metabolism also plays an important role, leading to platelet damage and promoting the formation of thrombi [43]. Another experimental model of generation of free radicals is represented by ischemia and reperfusion (I/R).…”

Section: Antioxidant Activitymentioning

confidence: 99%

Hesperidin and SARS-CoV-2: New Light on the Healthy Function of Citrus Fruits

Bellavite

Donzelli²

2020

Antioxidants

138

123

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Among the many approaches to Coronavirus disease 2019 (COVID-19) prevention, the possible role of nutrition has so far been rather underestimated. Foods are very rich in substances, with a potential beneficial effect on health, and some of these could have an antiviral action or be important in modulating the immune system and in defending cells from the oxidative stress associated with infection. This short review draws the attention on some components of citrus fruits, and especially of the orange (Citrus sinensis), well known for its vitamin and flavonoid content. Among the flavonoids, hesperidin has recently attracted the attention of researchers, because it binds to the key proteins of the Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Several computational methods, independently applied by different researchers, showed that hesperidin has a low binding energy, both with the coronavirus “spike” protein, and with the main protease that transforms the early proteins of the virus (pp1a and ppa1b) into the complex responsible for viral replication. The binding energy of hesperidin to these important components is lower than that of lopinavir, ritonavir, and indinavir, suggesting that it could perform an effective antiviral action. Furthermore, both hesperidin and ascorbic acid counteract the cell damaging effects of the oxygen free radicals triggered by virus infection and inflammation. There is discussion about the preventive efficacy of vitamin C, at the dose achievable by the diet, but recent reviews suggest that this substance can be useful in the case of strong immune system burden caused by viral disease. Computational methods and laboratory studies support the need to undertake apposite preclinical, epidemiological, and experimental studies on the potential benefits of citrus fruit components for the prevention of infectious diseases, including COVID-19.

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Mitochondria and microbiota dysfunction in COVID-19 pathogenesis

Cited by 261 publications

References 106 publications

Assessment of functional capacity with cardiopulmonary exercise testing in non-severe COVID-19 patients at three months follow-up

Assessment of functional capacity with cardiopulmonary exercise testing in non-severe COVID-19 patients at three months follow-up

Cardiac damage in patients with the severe type of coronavirus disease 2019 (COVID-19)

Hesperidin and SARS-CoV-2: New Light on the Healthy Function of Citrus Fruits

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