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Kapsdorferová V, Grešová S, Švorc P. Measurement of blood pressure in rats: Invasive or noninvasive methods? Physiol Rep 2024; 12:e70041. [PMID: 39266877 PMCID: PMC11392657 DOI: 10.14814/phy2.70041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 08/22/2024] [Accepted: 08/29/2024] [Indexed: 09/14/2024] Open
Abstract
Experiments should always be based on control values. This assumption fully applies to cardiovascular parameters, such as heart rate (HR) and blood pressure (BP), which are highly sensitive to various external and internal stimuli and can already be significantly altered when an experiment begins. Therefore, it is necessary to determine which values are defined as a starting point (i.e., control and baseline) or compare them with valid reference values if the goal is to evaluate the changes after experimental intervention. A generally accepted principle is a reciprocal relationship between BP and HR, in which one parameter affects the other and vice versa. BP can be measured using two methods-noninvasively (tail-cuff) and invasively (telemetry, direct measurements of BP after introducing the sensor directly into the artery), and HR directly or by extrapolation from BP recordings. This study does not aim to evaluate the results of individual studies, but to review whether there are differences in control (baseline) BP values in normotensive and hypertensive male rats using invasive versus noninvasive methods, and to investigate whether there is a causal relationship between BP and HR in in vivo experiments with male rats.
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Affiliation(s)
- Viktória Kapsdorferová
- Department of Medical Physiology, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
| | - Soňa Grešová
- Department of Medical Physiology, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
| | - Pavol Švorc
- Department of Medical Physiology, Faculty of Medicine, Pavol Jozef Safarik University, Kosice, Slovakia
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Silva-Velasco DL, Hong E, Beltran-Ornelas JH, Sánchez-López A, Huerta de la Cruz S, Tapia-Martínez JA, Gomez CB, Centurión D. Hydrogen sulfide ameliorates hypertension and vascular dysfunction induced by insulin resistance in rats by reducing oxidative stress and activating eNOS. Eur J Pharmacol 2024; 963:176266. [PMID: 38096969 DOI: 10.1016/j.ejphar.2023.176266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/27/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023]
Abstract
Hydrogen sulfide (H2S) is a gasotransmitter implied in metabolic diseases, insulin resistance, obesity, and type 2 Diabetes Mellitus. This study aimed to determine the effect of chronic administration of sodium hydrosulfide (NaHS; inorganic H2S donor), L-Cysteine (L-Cys; substrate of H2S producing enzymes) and DL-Propargylglycine (DL-PAG; cystathionine-gamma-lyase inhibitor) on the vascular dysfunction induced by insulin resistance in rat thoracic aorta. For this purpose, 72 animals were divided into two main sets that received: 1) tap water (control group; n = 12); and 2) fructose 15% w/v in drinking water [insulin resistance group (IR); n = 60] for 20 weeks. After 16 weeks, the group 2 was divided into five subgroups (n = 12 each), which received daily i. p. injections during 4 weeks of: 1) non-treatment (control); 2) vehicle (phosphate buffer saline; PBS, 1 ml/kg); 3) NaHS (5.6 mg/kg); 4) L-Cys (300 mg/kg); and (5) DL-PAG (10 mg/kg). Hemodynamic variables, metabolic variables, vascular function, ROS levels and the expression of p-eNOS and eNOS were determined. IR induced: 1) hyperinsulinemia; 2) increased HOMA-index; 3) decreased Matsuda index; 4) hypertension, vascular dysfunction, increased ROS levels; 5) increased iNOS, and 6) decreased CSE, p-eNOS and eNOS expression. Furthermore, IR did not affect contractile responses to norepinephrine. Interestingly, NaHS and L-Cys treatment, reversed IR-induced impairments and DL-PAG treatment decreased and increased the HOMA and Matsuda index, respectively. Taken together, these results suggest that NaHS and L-Cys decrease the metabolic and vascular alterations induced by insulin resistance by reducing oxidative stress and activating eNOS. Thus, hydrogen sulfide may have a therapeutic application.
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Affiliation(s)
- Diana L Silva-Velasco
- Departamento de Farmacobiología, Cinvestav-Coapa, Czda. de Los Tenorios 235, Col. Granjas-Coapa, Alcaldía Tlalpan, C.P. 14330, Ciudad de México, Mexico
| | - Enrique Hong
- Departamento de Farmacobiología, Cinvestav-Coapa, Czda. de Los Tenorios 235, Col. Granjas-Coapa, Alcaldía Tlalpan, C.P. 14330, Ciudad de México, Mexico
| | - Jesus H Beltran-Ornelas
- Departamento de Farmacobiología, Cinvestav-Coapa, Czda. de Los Tenorios 235, Col. Granjas-Coapa, Alcaldía Tlalpan, C.P. 14330, Ciudad de México, Mexico
| | - Araceli Sánchez-López
- Departamento de Farmacobiología, Cinvestav-Coapa, Czda. de Los Tenorios 235, Col. Granjas-Coapa, Alcaldía Tlalpan, C.P. 14330, Ciudad de México, Mexico
| | - Saúl Huerta de la Cruz
- Departamento de Farmacobiología, Cinvestav-Coapa, Czda. de Los Tenorios 235, Col. Granjas-Coapa, Alcaldía Tlalpan, C.P. 14330, Ciudad de México, Mexico
| | - Jorge A Tapia-Martínez
- Departamento de Farmacobiología, Cinvestav-Coapa, Czda. de Los Tenorios 235, Col. Granjas-Coapa, Alcaldía Tlalpan, C.P. 14330, Ciudad de México, Mexico
| | - Carolina B Gomez
- Departamento de Farmacobiología, Cinvestav-Coapa, Czda. de Los Tenorios 235, Col. Granjas-Coapa, Alcaldía Tlalpan, C.P. 14330, Ciudad de México, Mexico
| | - David Centurión
- Departamento de Farmacobiología, Cinvestav-Coapa, Czda. de Los Tenorios 235, Col. Granjas-Coapa, Alcaldía Tlalpan, C.P. 14330, Ciudad de México, Mexico.
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Dietary Supplementation with D-Ribose-L-Cysteine Prevents Hepatic Stress and Pro-Inflammatory Responses in Male Wistar Rats Fed a High-Fructose High-Fat Diet. PATHOPHYSIOLOGY 2022; 29:631-639. [PMID: 36412634 PMCID: PMC9680386 DOI: 10.3390/pathophysiology29040049] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/07/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022] Open
Abstract
Diets rich in fats and fructose are associated with the pathogenesis of oxidative stress-induced non-alcoholic fatty liver disease. Therefore, we investigated the effect of D-ribose-L-cysteine (DRLC) in high-fructose high-fat (HFHF) diet-fed rats. Twenty rats (n = 5), divided into four groups, were simultaneously exposed to HFHF and/or DRLC (250 mg/kg) orally during the 8 weeks of the study. Results showed that HFHF precipitated pro-inflammation and selective disruption of the oxidative stress markers. There were significant decreases in the level of antioxidants such as superoxide dismutase (SOD), glutathione peroxidase (GPX), total antioxidant capacity (TAC), hepatic SOD and GPX. Significant increases in serum levels of uric acid (UA), tumour necrosis factor-alpha (TNF-α), C-reactive protein (CRP) and hepatic Xanthine oxidase (XO) were observed in the HFHF compared to the control. In the HFHF + DRLC group, oxidative stress was mitigated due to differences in serum levels of SOD, GPX, TAC, TNF-α, liver SOD, and XO relative to control. The administration of DRLC alone caused significant reductions in malondialdehyde, UA and CRP and a significant increase in SOD compared to the control. DRLC prevents hepatic and systemic oxidative stress and pro-inflammatory events in HFHF diet-fed rats.
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KHALIL N, ALFARIS NA, ALTAMIMI JZ. Potential health effects of tomato (lycopersicon esculentum) juice and hypoglycemic amelioration in the atherogenic indices between diabetic animal models. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.88222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Krueger KJ, Rahman FK, Shen Q, Vacek J, Hiebert JB, Pierce JD. Mitochondrial bioenergetics and D-ribose in HFpEF: a brief narrative review. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1504. [PMID: 34805366 PMCID: PMC8573443 DOI: 10.21037/atm-21-2291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/15/2021] [Indexed: 11/24/2022]
Abstract
Objective In this review article, we briefly describe the status of treatment options for HFpEF and the role of mitochondrial dysfunction in the pathogenesis of HFpEF as an alternative therapeutic target. We also examine the mechanisms of D-ribose in cellular energy production and discuss the potential disadvantages and benefits of supplemental use of D-ribose in patients with HFpEF. Background Heart failure is a major cardiovascular disease that impacts over 6 million Americans and is one of the leading causes for morbidity and mortality. Patients with heart failure often experience shortness of breath and fatigue along with impaired physical capacity, all leading to poor quality of life. As a subtype of heart failure, heart failure with preserved ejection fraction (HFpEF) is characterized with impaired diastolic function. Currently, there are no effective treatments specifically for HFpEF, thus clinicians and researchers are searching for therapies to improve cardiac function. Emerging evidence indicate that mitochondrial dysfunction and impaired cardiac bioenergetics are among the underlying mechanisms for HFpEF. There is increased interest in investigating the use of supplements such as D-ribose to enhance mitochondrial function and improve production of adenosine triphosphate (ATP). Methods For this narrative review, more than 100 relevant scientific articles were considered from various databases (e.g., PubMed, Web of Science, CINAHL, and Google Scholar) using the keywords “Heart Failure”, “HFpEF”, “D-ribose”, “ATP”, “Mitochondria”, Bioenergetics”, and “Cellular Respiration”. Conclusions It is essential to find potential targeted therapeutic treatments for HFpEF. Since there is evidence that the HFpEF is related to impaired myocardial bioenergetics, enhancing mitochondrial function could augment cardiac function. Using a supplement such as D-ribose could improve mitochondrial function by increasing ATP and enhancing cardiac performance for patients with HFpEF. There is a recently completed clinical trial with HFpEF patients that indicates D-ribose increases ATP production and improves cardiac ejection fraction.
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Affiliation(s)
- Kathryn J Krueger
- School of Nursing, University of Kansas Medical Center, Kansas City, KS, USA
| | - Faith K Rahman
- School of Nursing, University of Kansas Medical Center, Kansas City, KS, USA
| | - Qiuhua Shen
- School of Nursing, University of Kansas Medical Center, Kansas City, KS, USA
| | - James Vacek
- The University of Kansas Health System, Kansas City, KS, USA
| | - John B Hiebert
- School of Nursing, University of Kansas Medical Center, Kansas City, KS, USA
| | - Janet D Pierce
- School of Nursing, University of Kansas Medical Center, Kansas City, KS, USA
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