scholarly journals Effect of hyperbaric oxygen therapy on liver function during intermittent ischemia

2013 ◽  
Vol 28 (suppl 1) ◽  
pp. 61-65 ◽  
Author(s):  
Leticia Botigeli Baldim ◽  
Ricardo Nejo Jr ◽  
Maria Eliza Jordani Souza ◽  
Maria Cecília Jordani Gomes ◽  
Maria Aparecida Neves Cardoso Picinato ◽  
...  
Keyword(s):  
Liver Function ◽  
Hyperbaric Oxygen ◽  
Mitochondrial Function ◽  
Hyperbaric Oxygen Therapy ◽  
Aspartate Aminotransferase ◽  
Alanine Aminotransferase ◽  
Oxygen Therapy ◽  
Respiratory Control ◽  
Respiratory Control Ratio ◽  
Hepatic Pedicle

PURPOSE: To analyze the effects of hyperbaric oxygen therapy on liver function in rats previously subjected to ischemia and reperfusion. METHODS: A randomly distribution of 23 Wistar rats was conducted into three groups: SHAM, animals subjected to surgical stress without restricting blood flow by clamping the hepatic pedicle, IR, rats underwent hepatic vascular occlusion intermittently for two complete cycles of 15 minutes of ischemia followed by 5 min of reperfusion, IR / HBO, rats underwent hepatic pedicle clamping and thereafter exposed to hyperbaric oxygen pressure of 2 absolute atmospheres for 60 minutes. We evaluated liver function through mitochondrial function, determined by the stages 3 and 4 of respiration, respiratory control ratio (RCR) and mitochondrial permeability transition (Swelling). Serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were also quantified . We analyzed the results using the Mann-Whitney test and were considered significant all results with p <0.05. RESULTS: There were significant differences between the results of stage 3 in SHAM vs IR group ; of the stage 4 in the groups IR vs SHAM and SHAM vs IR /HBO; of the Respiratory Control Ratio (RCR) in the group IR vs IR / HBO ; of alanine aminotransferase in the groups IR vs SHAM , SHAM vs IR/HBO and IR vs IR / HBO; aspartate aminotransferase in the groups SHAM vs IR and SHAM vs IR / HBO. CONCLUSION: The whole analysis of the mitochondiral function indicators permits us to conclude that the hyperbaric oxygen therapy acted as a protective agent of the mitochondrial function, minimizing the ischemia-reperfusion injury of the hepatic parenchyma.

scholarly journals Effects of hyperbaric oxygen (HBO), as pre-conditioning in liver of rats submitted to periodic liver ischemia/reperfusion

2013 ◽  
Vol 28 (suppl 1) ◽  
pp. 66-71 ◽  
Author(s):  
Diego Elias da Silva Caldeira ◽  
Maria Eliza Jordani Souza ◽  
Maria Cecília Jordani Gomes ◽  
Maria Aparecida Neves Cardoso Picinato ◽  
Clarice Fleury Fina ◽  
...  
Keyword(s):  
Hyperbaric Oxygen ◽  
Mitochondrial Function ◽  
Ischemia Reperfusion Injury ◽  
Ischemia Reperfusion ◽  
Respiratory Control ◽  
Mitochondrial Swelling ◽  
Liver Ischemia ◽  
Respiratory Control Ratio ◽  
Simultaneous Exposure ◽  
Significant Difference

PURPOSE: to assess the effect of hyperbaric oxygen (HBO) as pre-conditioning on periodic liver ischemia/reperfusion injury. METHODS: Thirty-six male Wistar rats were divided into 4 groups (SHAM, I/R , HBO-I/R and CONTROL). The surgical technique consisted of total clamping of the hepatic pedicle for 15 min followed by twice repeated reperfusion for 5 min (unclamping). HBO was applied in a collective chamber (simultaneous exposure of 4 rats) directly pressurized with oxygen at 2 ATA for 60 min. Hepatic mitochondrial function was determined using samples of the median lobe obtained after exactly 5 min of reperfusion for the analysis of mitochondrial respiration based on the determination of states 3 and 4, the respiratory control ratio and the transition of mitochondrial permeability (mitochondrial swelling).Data were analyzed by the Mann-Whitney test and the level of significance was set at p < 0.05. RESULTS: There was a statistically significant difference (p< 0.05) in state 3 between the CONTROL and I/R and HBO-I/R groups, in state 4 between the CONTROL and I/R and HBO-I/R groups; in respiratory control ratio (RCR) between the CONTROL and I/R and HBO-I/R groups and between the CONTROL and Sham groups, and in mitochondrial swelling between the CONTROL and I/R and HBO-/R groups and between the Sham and I/R and HBO-I/R groups. CONCLUSION: In this process of periodic ischemia and reperfusion, hyperbaric pre-conditioning did not improve significantly hepatic mitochondrial function.

Experience in Applying Hyperbaric Oxygen Therapy Using Portable Pressure Chambers for the Treatment of Patients with the Novel Coronavirus Infection COVID-19

Biomeditsina ◽  
2020 ◽  
pp. 39-46
Author(s):  
A. S. Samoilov ◽  
Yu. D. Udalov ◽  
M. V. Sheyanov ◽  
A. V. Gholinsky ◽  
A. B. Litvinenko
Keyword(s):  
Oxygen Saturation ◽  
Hyperbaric Oxygen ◽  
Hyperbaric Oxygen Therapy ◽  
Oxygen Therapy ◽  
Capillary Blood ◽  
Blood Hemoglobin ◽  
Patient Groups ◽  
Radiological Changes ◽  
Coronavirus Infection ◽  
Novel Coronavirus

This communication presents the experience of using mobile pressure chambers in patients with the confi rmed novel coronavirus infection in hospital settings. The obtained preliminary results indicate positive antihypoxic effects of hyperbaric oxygen therapy (HBO) applied in the form of increased saturation. After a session of HBO, patients demonstrated an increase in the oxygen saturation of capillary blood hemoglobin at the average level of 3.71 points. Differences between SatO2 levels prior to and following HBO treatment were signifi cant in the CT2, CT3 and CT4 groups (p0.05). As expected, the effi cacy of HBO in terms of the oxygen saturation of capillary blood hemoglobin was the greatest in the patient groups showing pronounced clinical and radiological changes in the lungs.

Pengaruh Pemberian Terapi Oksigen Hiperbarik Terhadap Kadar Kolesterol Total Pada Tikus Putih (Rattus novergicus) Jantan Galur Wistar Yang Di Induksi Diet Tinggi Lemak

2018 ◽  
Vol 16 (1) ◽  
pp. 1 ◽  
Author(s):  
AZRUL HILDAN SAFRIZAL
Keyword(s):  
Cardiovascular Disease ◽  
Total Cholesterol ◽  
Cholesterol Level ◽  
Hyperbaric Oxygen ◽  
Hyperbaric Oxygen Therapy ◽  
High Fat Diet ◽  
Oxygen Therapy ◽  
Total Cholesterol Level ◽  
High Fat ◽  
Cholesterol Levels

<p>The pattern and lifestyle of today's society with the presence of an interner facility makes people spend more time sitting out than on exercise and increased consumption of high-fat foods may increase the risk of cardiovascular disease. An effective therapy is needed in preventing the occurrence of cardiovascular disease. Hyperbaric oxygen now starts to develop for the treatment of several diseases, which in turn can increase the gene forming antioxidant enzymes and ROS. To determine effect of hyperbaric oxygen therapy on total cholesterol levels of wistar white rats (Rattusnovergicus) induced bye high fat. The study was carried out in an expeative post test only group control of three groups. One group is given standard feed. All groups induced high-fat diet and standard feed. Of the two groups induced, one group was given hyperbaric oxygen therapy with a dose of 3 x 30 minutes for six days on day 7 at a blood test to determine total cholesterol levels<strong>. </strong>One way Anova parametric statistic test showed that p = 0.007 &lt; α proved hypothesis that hyperbaric oxygen therapy giving effect to total cholesterol level of white mice of jantangalurist rings induced by high fat diet. Total cholesterol was significantly different between K (-) and K (+) and between K (-) and P. It was found that hyperbaric oxygen therapy had an effect on total cholesterol level dose of 3x30 minutes for six days.</p>

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