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Peña-Mercado E, Garcia-Lorenzana M, Huerta-Yepez S, Cruz-Ledesma A, Beltran-Vargas NE. Effect of melatonin on electrical impedance and biomarkers of damage in a gastric ischemia/reperfusion model. PLoS One 2022; 17:e0273099. [PMID: 35972989 PMCID: PMC9380938 DOI: 10.1371/journal.pone.0273099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 08/02/2022] [Indexed: 11/18/2022] Open
Abstract
The damage to the gastrointestinal mucosa induced by ischemia/reperfusion (I/R) is closely related to high mortality in critically ill patients, which is attributable, in part, to the lack of an early method of diagnosis to show the degree of ischemia-induced injury in this type of patients. Electrical Impedance Spectroscopy (EIS) has been shown to be a tool to early diagnose gastric mucosal damage induced by ischemia. A therapeutic alternative to reduce this type of injury is melatonin (MT), which has gastroprotective effects in I/R models. In this work, the effect of treatment with MT on the electrical properties of gastric tissue, biomarkers of inflammatory (iNOS and COX-2), proliferation, and apoptotic process under I/R conditions in male Wistar rats was evaluated through EIS, histological and immunohistochemical analysis. Treatment with MT prevents gastric mucosa damage, causing a decrease in gastric impedance parameters related to the inflammatory process and cellular damage. This suggests that EIS could be used as a tool to diagnose and monitor the evolution of gastric mucosal injury, as well as in the recovery process in critically ill patients.
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Affiliation(s)
- Eduardo Peña-Mercado
- Departamento de Procesos y Tecnologia, Universidad Autonoma Metropolitana, Unidad Cuajimalpa, CDMX, Mexico
| | - Mario Garcia-Lorenzana
- Departamento de Biologia de la Reproduccion, Universidad Autonoma Metropolitana, Unidad Iztapalapa, CDMX, Mexico
| | - Sara Huerta-Yepez
- Unidad de Investigacion en Enfermedades Hematooncologicas, Hospital Infantil de Mexico, Federico Gomez, CDMX, Mexico
| | | | - Nohra E. Beltran-Vargas
- Departamento de Procesos y Tecnologia, Universidad Autonoma Metropolitana, Unidad Cuajimalpa, CDMX, Mexico
- * E-mail:
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Eduardo PM, Mario GL, Carlos César PM, Mayra MA, Sara HY, E BN. Bioelectric, tissue, and molecular characteristics of the gastric mucosa at different times of ischemia. Exp Biol Med (Maywood) 2021; 246:1968-1980. [PMID: 34130514 PMCID: PMC8474982 DOI: 10.1177/15353702211021601] [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: 01/21/2021] [Accepted: 05/13/2021] [Indexed: 11/16/2022] Open
Abstract
Gastrointestinal ischemia may be presented as a complication associated with late shock detection in patients in critical condition. Prolonged ischemia can cause mucosal integrity to lose its barrier function, triggering alterations that can induce organ dysfunction and lead to death. Electrical impedance spectroscopy has been proposed to identify early alteration in ischemia-induced gastric mucosa in this type of patients. This work analyzed changes in impedance parameters, and tissue and molecular alterations that allow us to identify the time of ischemia in which the gastric mucosa still maintains its barrier function. The animals were randomly distributed in four groups: Control, Ischemia 60, 90, and 120 min. Impedance parameters were measured and predictive values were determined to categorize the degree of injury using a receiver operating characteristic curve. Markers of inflammatory process and apoptosis (iNOS, TNFα, COX-2, and Caspase-3) were analyzed. The largest increase in impedance parameters occurred in the ischemia 90 and 120 min groups, with resistance at low frequencies (RL) and reactance at high frequencies (XH) being the most related to damage, allowing prediction of the occurrence of reversible and irreversible tissue damage. Histological analysis and apoptosis assay showed progressive mucosal deterioration with irreversible damage (p < 0.001) starting from 90 min of ischemia. Furthermore, a significant increase in the expression of iNOS, TNFα, and COX-2 was identified in addition to apoptosis in the gastric mucosa starting from 90 min of ischemia. Tissue damage generated by an ischemia time greater than 60 min induces loss of barrier function in the gastric mucosa.
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Affiliation(s)
- Peña-Mercado Eduardo
- Posgrado en Ciencias Naturales e Ingenieria, Unidad Cuajimalpa,
Universidad Autonoma Metropolitana, CDMX 05340, Mexico
| | - Garcia-Lorenzana Mario
- Departamento de Biologia de la Reproduccion, Unidad Iztapalapa,
Universidad Autonoma Metropolitana, CDMX 09340, Mexico
| | - Patiño-Morales Carlos César
- Laboratorio de Investigacion en Biologia del Desarrollo y
Teratogenesis Experimental, Hospital Infantil de Mexico, Federico Gomez, CDMX
06720, Mexico
| | - Montecillo-Aguado Mayra
- Doctorado en Ciencias Biologicas, Facultad de Medicina,
Universidad Nacional Autonoma de Mexico, CDMX 04510, Mexico
| | - Huerta-Yepez Sara
- Unidad de Investigacion en Enfermedades Hematoncologicas,
Hospital Infantil de Mexico, Federico Gomez, CDMX 06720, Mexico
| | - Beltran Nohra E
- Departamento de Procesos y Tecnologia, Unidad Cuajimalpa,
Universidad Autonoma Metropolitana, CDMX 05340, Mexico
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Wang H, Wang L, Yang L, Shi X, Wen Z, Dong X. Exploring the relationship between the dielectric properties and viability of human normal hepatic tissues from 10 Hz to 100 MHz based on grey relational analysis and BP neural network. Comput Biol Med 2021; 134:104494. [PMID: 34058511 DOI: 10.1016/j.compbiomed.2021.104494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 11/19/2022]
Abstract
Liver is an important parenchyma organ, and its tissue viability plays an important role in liver transplantation and liver ischemic injury assessment. Dielectric property is a useful biophysical feature that provides insights into the structure and composition of biological tissues. This work aims to establish the relationship between the dielectric properties and viability of human normal hepatic tissues and explore the possibility of evaluating tissue viability by using dielectric properties. First, data on dielectric properties and tissue viability (including cell morphology and enzyme indicators) were collected from human liver tissues at 0.25-24 h after isolation. Grey relational analysis was conducted to select dielectric property and tissue viability indices that were highly correlated with prolonged ex vivo time as the inputs and outputs, respectively, of back-propagation (BP) neural network analysis. Finally, a BP neural network was developed with the Levenberg-Marquardt algorithm to explore the possibility of using dielectric properties as the basis for tissue viability evaluation. Results showed that the mean relative error for prediction was 2.40%, indicating that the model showed potential in forecasting liver tissue viability by applying dielectric properties.
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Affiliation(s)
- Hang Wang
- School of Aerospace Medicine, Air Force Medical University, Xi'an, China.
| | - Lei Wang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Lin Yang
- School of Aerospace Medicine, Air Force Medical University, Xi'an, China
| | - Xuetao Shi
- School of Biomedical Engineering, Air Force Medical University, Xi'an, China
| | - Zhihong Wen
- School of Aerospace Medicine, Air Force Medical University, Xi'an, China
| | - Xiuzhen Dong
- School of Biomedical Engineering, Air Force Medical University, Xi'an, China.
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A Comprehensive Review of Bioelectrical Impedance Analysis and Other Methods in the Assessment of Nutritional Status in Patients with Liver Cirrhosis. Gastroenterol Res Pract 2017; 2017:6765856. [PMID: 28894465 PMCID: PMC5574293 DOI: 10.1155/2017/6765856] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 07/11/2017] [Indexed: 02/07/2023] Open
Abstract
It is assumed that approximately 24–66% of patients with liver cirrhosis develop malnutrition. Numerous pathological processes lead to serious disorders of nutritional status in this group of patients. Malnutrition in the course of liver cirrhosis is associated with increased morbidity, complications, and low quality of life. Under these conditions, detection of malnutrition is of crucial importance. This review explores the complex mechanisms that lead to malnutrition in the course of liver cirrhosis and focuses on methods used in the assessment of nutritional status in cirrhotic patients. Among others, the role of bioelectrical impedance is highlighted. This noninvasive tool is promising and quite an accurate method of estimating body composition.
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Wang H, He Y, Yan Q, You F, Fu F, Dong X, Shi X, Yang M. Correlation between the dielectric properties and biological activities of human ex vivo hepatic tissue. Phys Med Biol 2015; 60:2603-17. [PMID: 25761728 DOI: 10.1088/0031-9155/60/6/2603] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Dielectric properties are vital biophysical features of biological tissues, and biological activity is an index to ascertain the active state of tissues. This study investigated the potential correlation between the dielectric properties and biological activities of human hepatic tissue with prolonged ex vivo time through correlation and regression analyses. The dielectric properties of 26 cases of normal human hepatic tissue at 10 Hz to 100 MHz were measured from 15 min after isolation to 24 h at 37 °C with 90% humidity. Cell morphologies, including nucleus area (NA) and alteration rate of intercellular area (ICAR), were analyzed as indicators of biological activities. Conductivity, complex resistivity, and NA exhibited opposing changes 1 h after isolation. Relative permittivity and ex vivo time were not closely correlated (p > 0.05). The dielectric properties measured at low frequencies (i.e. <1 MHz) were more sensitive than those measured at high frequencies in reflecting the biological activity of ex vivo tissue. Highly significant correlations were found between conductivity, resistivity and the ex vivo time (p < 0.05) as well as conductivity and the cell morphology (p < 0.05). The findings indicated that establishing the correlation between the dielectric properties and biological activities of human hepatic tissue is of great significance for promoting the role of dielectric properties in biological science, particularly in human biology.
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Affiliation(s)
- Hang Wang
- Department of Biomedical Engineering, Fourth Military Medical University, 169 West Changle Road, 710032, Xi'an, People's Republic of China
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Wang Y, Zhai YZ, Feng GH. Nutritional and metabolic abnormalities and nutrition support therapy in patients with liver failure. Shijie Huaren Xiaohua Zazhi 2012; 20:2167-2172. [DOI: 10.11569/wcjd.v20.i23.2167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Nutritional and metabolic damage is an important manifestation of severe liver disease and is significantly associated with prognosis. In this paper, we review nutritional and metabolic abnormalities and nutritional support therapy in patients with liver failure by summarizing the indicators for evaluating the nutritional and metabolic status and the features of nutrients and energy metabolism. We point out that resting energy expenditure can be measured using CCM-D nutrition metabolism test system in liver failure patients. Energy supply is primarily contributed by fat oxidation in patients with chronic liver failure, and their respiratory quotient is significantly lower than the predicted values. In addition, we discuss nutritional support intervention methods and intake for different stages of liver failure. Our aim is to raise the awareness of clinicians for malnutrition in patients with liver failure to formulate individualized nutrition support therapy.
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Boshra V, Moustafa AM. Effect of preischemic treatment with fenofibrate, a peroxisome proliferator-activated receptor-α ligand, on hepatic ischemia-reperfusion injury in rats. J Mol Histol 2011; 42:113-22. [PMID: 21305343 DOI: 10.1007/s10735-011-9313-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Accepted: 01/19/2011] [Indexed: 12/24/2022]
Abstract
Liver ischemia/reperfusion (I/R) injury is a serious clinical problem. The reactive oxygen species (ROS) and tumor necrosis factor alpha (TNF-α) are important mediators in liver I/R injury. This study was designed to investigate the effect of preischemic treatment with fenofibrate (Peroxisome proliferator-activated receptor- α agonist) on the oxidative stress and inflammatory response to hepatic I/R injury in rats. Hepatic I/R was induced by clamping the blood supply of the left lateral and median lobes of the liver for 60 min, followed by reperfusion for 4 h. Each animal group was pretreated with a single dose of fenofibrate (50 mg/kg body weight) intraperitoneally 1 h before ischemia. At the end of reperfusion, blood samples and liver tissues were obtained to assess serum alanine aminotransferase (ALT), TNF-α, hepatic malondialdehyde (MDA) and superoxide dismutase activity (SOD). Liver specimens were obtained and processed for light and electron microscopic study. Hepatic I/R induced a significant elevation of serum ALT and TNF-α with significant elevation of hepatic MDA and reduction of SOD activity. Histopathological examination revealed hepatic inflammation, necrosis and apoptosis. Preischemic treatment with fenofibrate at a dose of 50 mg/kg significantly attenuated the biochemical and structural alterations of I/R-induced liver injury.
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Affiliation(s)
- Vivian Boshra
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
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Cui ML, Ahn HS, Kim JY, Lee DS, Kim HJ, Yun SS. Impaired Cation Transport May Lead to Bioelectrical Impedance Changes during Hepatic Ischemia. JOURNAL OF THE KOREAN SURGICAL SOCIETY 2010. [DOI: 10.4174/jkss.2010.78.6.390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mei Lan Cui
- Research Institute of Biomedical Engineering, College of Medicine, Yeungnam University, Daegu, Korea
| | - Hyun Soo Ahn
- Research Institute of Biomedical Engineering, College of Medicine, Yeungnam University, Daegu, Korea
| | - Jong Yeon Kim
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, Korea
| | - Dong Shik Lee
- Department of Surgery, College of Medicine, Yeungnam University, Daegu, Korea
| | - Hong Jin Kim
- Department of Surgery, College of Medicine, Yeungnam University, Daegu, Korea
| | - Sung Su Yun
- Research Institute of Biomedical Engineering, College of Medicine, Yeungnam University, Daegu, Korea
- Department of Surgery, College of Medicine, Yeungnam University, Daegu, Korea
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