The increasing use of cardioplegic solution for the reduction of ischemic tissue injury requires that all cardiplegic solution be carefully assessed for any protective or damaging properties. This study describes functional, enzymatic and structural assessment of the efficiency of three cardioplegic solutions (Young & GIK, Bretschneider, and $K^{+}$ Albumin solution) in a Modified Isolated Rat Heart Model of cardiopulmonary bypass and ischemic arrest. Isolated rat heart were subjected to a 2-minute period of coronary infusion with a cold cardioplegic or a noncardioplegic solution immediately before and also at the midpoint of a 60-minute period of hypothermic ($10{\pm}1$. C) ischemic cardiac arrest. The results of this study were as follow: 1. Spontaneous heart beat after ischemic arrest occured 16 seconds later after Langendorff reperfusion in the Young & GIK group (n=6), and 40 second later in the Bretschneider group (n=6) and 6 minute later in the $K^{+}$ Albumin group (n=6), and 16 minute later in the control group (non-cardioplegia). A good recovery state of spontaneous heart beat was shown in the Young & GIK and Bretschneider groups. 2. The percentage of recorveries of heart function at 30 minute after postischemic working heart perfusion were : heart rate $91.6{\pm}3.1$% (P<0.01)m oeaj airtuc oressyre $83{\pm}3$% (P<0.01), coronary flow $70{\pm}8$% (P<0.05) and aortic flow flow rate $39{\pm}9.3$% (P<0.05) in the Young & GIK group. This percentage of recoveries of the Young & GIK group was significantly greater than the control group. In the Bretschneider group, the percentage of recoveries were : heart rate $87.8{\pm}7.5$%(P<0.05), peak aortic pressure $71{\pm}2.3$% (P<0.05) and aortic flow rate $33.2{\pm}6.6$%(P<0.05). hte percentage of recoveries were significantly greater than in the control group. In the $K^{+}$ Albumin group, recoveries of heart function were poor. 3. Total CPK leakage was $131.2{\pm}12.75$IU/30 min/gm. dry weight in the control group, $50.65{\pm}12.75$IU in the Young & GIK gruop, $69.40{\pm}32.21$Iu in Bretschneider group, and $103.65{\pm}15.47$IU in the $K^{+}$ Albumin group during the 30 minute postischemic Langendorff reperfusion. Total CPK leakage was significantly less (P<0.001) in the Young & GIK group, than in the control group. 4. Direct correlatin between percentage recovery of aortic flow rate and total amount of CPK leakage from Myocardium was noticed.(Correlation Coefficient r = 0.76, P<0.001). 5. Mild perivascular edema was the only finding of light microscopic study of myocardium after 60 minute ischemic arrest with cold cardioplegic solutions and hypothermla.
Nesfatin-1/NUCB2, which is associated with the control of appetite and energy metabolism, was reported for the first time to be expressed in the hypothalamus. However, recent studies have shown that nesfatin-1/NUCB2 was expressed not only in the hypothalamus, but also in various tissues including digestive and reproductive organs. We also demonstrated that nesfatin-1/NUCB2 was expressed in the reproductive organs, pituitary gland, heart, lung, and gastrointestinal tract of the adult mouse. However, little is known about nesfatin-1/NUCB2 expression in fetal and neonatal mice. Therefore, we examined here the distribution of nesfatin-1/NUCB2 in various organs of fetal and neonatal mice and compared them with the distribution in adult mice. As a result of immunohistochemical staining, nesfatin-1/NUCB2 protein was expressed relatively higher in the lung, kidney, heart, and liver compared to other organs in the fetus. Western blot results also showed that nesfatin-1/NUCB2 protein was detected in the lung, kidney, heart, and stomach. Next, we compared the expression levels of nesfatin-1/NUCB2 mRNA in the fetus and neonate with the expression levels in both male and female adult mice. The expression levels in heart, lung, stomach, and kidney were higher compared with other organs in fetal and neonatal mice and in both male and female adult mice. Interestingly, the expression of nesfatin-1/NUCB2 mRNA in the kidney was dramatically increased in male and female adult mice compared to fetal and neonatal mice. These results indicate that nesfatin-1/NUCB2 may regulate the development and physiological function of mouse organs. In the future, we need more study on the function of nesfatin-1/NUCB2, which is highly expressed in the heart, lung, and kidney during mouse development.
Kim, Jeong-Won;Sim, Hyung Tae;Yoo, Jae Suk;Kim, Dong Jin;Cho, Kwang Ree
Journal of Chest Surgery
/
v.49
no.6
/
pp.427-434
/
2016
Background: Recent studies have demonstrated the benefits of off-pump coronary bypass grafting over the on-pump technique in patients with chronic kidney disease (CKD). To further reduce the risk of acute kidney injury and the need for renal replacement therapy, even in patients undergoing off-pump coronary artery bypass grafting, we adopted protocol-based perioperative management for patients with CKD. Methods: From December 2012 to March 2015, 265 patients underwent isolated off-pump coronary artery bypass grafting. To analyze renal function in a stable condition, we excluded 12 dialysis-dependent end stage renal failure and 10 emergency or urgent cases. Among the remaining 243 patients, 208 patients had normal kidney function (normal group), and 35 patients had CKD (CKD group). Minimizing contrast exposure, ensuring adequate hydration, using strict drug dosage adjustment, and optimizing hemodynamic status were key elements of the protocol for the CKD group. Results: The risk of acute kidney injury was about ${\times}3$ higher in the CKD group than in the normal group (p=0.01). Estimated glomerular filtration rates and serum creatinine levels deteriorated until the third postoperative day in the CKD group. However, by adopting protocol-based perioperative management, this transient renal dysfunction recovered to preoperative levels by the fifth postoperative day without requiring renal replacement therapy in all cases. Conclusion: Off-pump coronary bypass surgery combined with this protocol-based perioperative management strategy in patients with non-dialysis-dependent CKD could mostly be performed without renal replacement therapy.
Chung, Chan Min;Tak, Seung Wan;Lim, Hyoseob;Cho, Sang-Hun;Lee, Jong Wook
Archives of Craniofacial Surgery
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v.21
no.1
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pp.49-52
/
2020
The specialized structure of the upper eyelid ensures complete closure of the eye and eyeball sealing. An upper eyelid injury can cause various symptoms associated with eyeball trauma, not just scar formation or eyelid deformity. In this report, we describe a case of lagophthalmos observed after wound repair in a patient with a crushing injury caused by a grinder. Several surgical techniques are used to treat lagophthalmos or scar contracture. In most cases, a releasing procedure is performed after 6 months of initial repair. However, if the patient has severe symptoms that are not relieved by conservative care, early revision is inevitable. We describe a case of early lagophthalmos successfully resolved with pentagonal wedge resection, fat redistribution, and full-thickness skin grafting. After the revisional surgery, we observed that the patient regained the ability to completely close the injured eyelid, with restoration of function and favorable cosmetic outcomes. Pentagonal wedge resection to release a retracted structure, fat redistribution to prevent readhesion, and full-thickness skin grafting for enough amount of skin to regain upper eyelid function is useful for scar release and lagophthalmos following crushing injuries of the upper eyelid.
Nowadays, in spite of the remarkable development of the results of open heart surgery, the incidence of postoperative acute renal failure [ARF] has been increased due to the expansion of the candidates and prolonged operation time for complicated cases. It is also well known that ARF after open heart surgery, if once occurred, is a critical complication, therefore early diagnosis and treatment about it are very important for prognosis. Recently a low molecular weight [2 * microglobulin [[2* MG]has been used as a indicator of renal function. Because of the properties of [2 * MG, serum concentration of it is increased in glomerular dysfunction and urine excretion of it is increased in tubular dysfunction. Author studied about the perioperative changes of serum [2* MG and BUN concentration in 25 children and 30 adults for evaluation of significances of [2* MG as a parameter of postoperative renal function in open heart surgery, and the results were obtained as follows. l. In open heart surgery, the serum [2* MG concentration was elevated postoperatively in the all cases from the first postoperative day. 2. There were a significant correlation between the preoperative BUN and [2* MG concentration [P< 0.01]. The correlation factor[r] in child group was 0.8512, and in adults 0.8636. 3. The maximum level of serum [2* MG in the both child and adult groups were noticed in 4th postoperative day as 2.61*0.80mg/ 1 in child group and 3.39*1.47 mg/ 4 in adult group, and there was a significant difference between the two groups statistically[P < 0.05]. 4. The pattern of changes of serum concentration of [2* MG with time was very similar with the changes of BUN, but in a case of ARF [expired with it] the changes of [2* MG was more remarkable. 5. There was a significant differences in the maximum level of [2* MG between the 2 group according to the ECC time [groups of below and above 60 minutes] [P< 0.01].
Lee, Jeong Hyun;Seo, Ho Won;Ryu, Jae Yong;Lim, Chae Jo;Yi, Kyu Yang;Oh, Kwang-Seok;Lee, Byung Ho
Biomolecules & Therapeutics
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v.28
no.5
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pp.482-489
/
2020
G protein-coupled receptor kinase 5 (GRK5) has been considered as a potential target for the treatment of heart failure as it has been reported to be an important regulator of pathological cardiac hypertrophy. To discover novel scaffolds that selectively inhibit GRK5, we have identified a novel small molecule inhibitor of GRK5, KR-39038 [7-((3-((4-((3-aminopropyl)amino)butyl)amino)propyl)amino)-2-(2-chlorophenyl)-6-fluoroquinazolin-4(3H)-one]. KR-39038 exhibited potent inhibitory activity (IC50 value=0.02 µM) against GRK5 and significantly inhibited angiotensin II-induced cellular hypertrophy and HDAC5 phosphorylation in neonatal cardiomyocytes. In the pressure overload-induced cardiac hypertrophy mouse model, the daily oral administration of KR-39038 (30 mg/kg) for 14 days showed a 43% reduction in the left ventricular weight. Besides, KR-39038 treatment (10 and 30 mg/kg/day, p.o.) showed significant preservation of cardiac function and attenuation of myocardial remodeling in a rat model of chronic heart failure following coronary artery ligation. These results suggest that potent GRK5 inhibitor could effectively attenuate both cardiac hypertrophy and dysfunction in experimental heart failure, and KR-39038 may be useful as an effective GRK5 inhibitor for pharmaceutical applications.
This study examines the effects of a rehabilitation program on quality of life (QOL), cardiopulmonary function and fatigue during radiotherapy for breast cancer patients. The program includes aerobic exercise, stretching and strengthening exercises. Sixty-five women participated in this study and they were asked to perform supervised exercises that last for 60 minutes five times a week for six weeks. The European organization for research and treatment of cancer-cancer (EORTC QLQ-C30) and the breast (EORTC QLQ-BR23), predicted maximal volume of oxygen consumption ($VO_{2max}$) and fatigue severity scale (FSS) were assessed before and after the rehabilitation program. The 60-minute program consisted of a 10-minute warm-up, 30-minute of aerobic exercises, and 15-minute of strengthening exercises, followed by a five-minute cool-down. Heart rates were monitored throughout the exercise class to ensure that patients were exercising at the target heart rate of 40~75% of the age-adjusted heart rate maximum. There were statistically significant differences in the changes of physical function and cancer related symptoms in the EORTC QLQ-C30 and EORTC QLQ-BR23 (p<.05). There was a statistically significant improvement in the predicted $VO_{2max}$ (p<.05), although there were no significant differences in the FSS (p>.05). The results of our study suggest that a supervised rehabilitation program may benefit the physical aspects and QOL of patients receiving radiotherapy for breast cancer.
Purpose: The purpose of this study is to analyze the effect of Tai Chi exercise on Cardiorespiratory function and to identify directions for future research. Method: 19 articles from Medline search of english journals(1981-2004) and 2 from Korean nursing journals were surveyed. The contents analysis were focused on outcome measures and relative factors regarding cardiopulmonary function. Results: There are 21 articles including 8 articles with quasi experimental design, 7 articles with randomized controlled design and 6 articles with comparative non experimental research design. The major subjects of research were older adults, but hypertensive patients, cardiac rehabilitative patient, and osteoarthritic patient also included. The major style of Tai Chi was Yang style with 108-form. The duration of Tai Chi exercise was from 12weeks to 13.2 years in comparative non experimental studies, but 6 weeks to 16weeks in randomized controlled experimental studies. The most effective duration for cardiopulmonary function was over 16weeks. The variables for cardiopulmonary function were blood pressure, heart rate and cardiopulmonary function via $VO_2$ max(ml/kg/min). To reduce the blood pressure in the result was found in 2 articles, to reduce the heart beat was found in 1 article, to improve the cardiopulmonary function via $VO_2$ max in results were found in 7 articles(73%) among 11 articles. Conclusion: The Tai Chi exercise over 16weeks improves the cardiopulmonary function. It is suggested that to verify the effect of Tai Chi on cardiopulmonary function, the difference of gender, age, health status will be identified through repeated experiments.
Journal of The Korean Society of Integrative Medicine
/
v.9
no.1
/
pp.183-192
/
2021
Purpose : The purpose of this study was to investigate the impact of postural correction training on pulmonary function on 28 college students suspected of turtle neck syndrome, and the following conclusions were obtained. Methods : Turtle neck syndrome suspicion 28 person were randomly divided into a posture training group (n = 14) and group that does not perform posture training (n = 14). Respiratory function was measured by SPIROVIT SP-1 and respiratory gas analyzer. The posture training group performed balloon blowing and stair climbing after 20 minutes of posture training, and the group without posture training carried out balloon blowing training and stair climbing. Five times a week and for two weeks. Results : 1. The comparison of the FVC before and after experiments caused by balloon blowing showed a higher level of effortful pulmonary function in the control group than in the experimental group. 2. Comparison of PEFs before and after the experiment by balloon blowing showed that the experimental group's peak flow rate was higher than that of the control group. 3. Comparison of the FIVC before and after experiments with balloon blowing showed that the comparison of the FIVC showed a higher level of effortless intake pulmonary function in the control group than in the experimental group. 4. The comparison of the maximum ventilation volume(VE) before and after the experimental gas measurement showed that the maximum ventilation rate of the experimental group was higher than that of the control group. 5. The comparison of pre-test and post-test heart rate(HR) by breath gas measurement showed that the heart rate of the control group was higher than that of the experimental group. Conclusion : the results of this study showed that postural correction training, balloon blowing training, and stair climbing could have a positive impact on improving pulmonary function. However, the two-week experiment conducted five times a week showed an increase in pulmonary function, but it was difficult to see the effect due to the short study period. Therefore, it is hoped that later studies will be conducted more systematically on the effects of breathing exercises on improving pulmonary function after post-postural correction training for patients with pulmonary function problems.
Youn Jae Jang;Hye Yoom Kim;Jung Joo Yoon;Byung Hyuk Han;Je Kuk Yu;Nam Geun Cho;Ho Sub Lee;Dae Gill Kang
Herbal Formula Science
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v.31
no.3
/
pp.157-169
/
2023
Gracilaria Verrucosa (GV), a seaweed used in traditional Korean medicine, was studied for its effects on MI-induced heart failure in rats. MI is caused by a blocked coronary artery, leading to severe cardiac dysfunction. The study used a rat model to assess cardiac changes over time and evaluate the impact of GV on heart failure. Ischemia was induced through LAD ligation surgery, and the extent of ischemic area was measured as a prognostic factor. GV extract administration significantly improved cardiac morphology and reduced cardiac weight compared to the MI group. GV treatment also improved cardiac function, as evidenced by positive effects on chamber dilation during MI-induced heart failure. Parameters such as ejection fraction (EF) and fractional shortening (FS) were measured. The MI group showed decreased EF and FS compared to the sham group, while these parameters improved in the GV group. GV treatment also reduced levels of LDH, CPK, and CK-MB in the serum, indicating reduced myocardial damage. Histological analysis revealed that GV treatment attenuated cardiac hypertrophy and fibrosis, with reduced collagen deposition in the myocardium. Immunohistochemistry analysis showed suppressed expression of TGF-β1 and collagen 1, involved in fibrosis. In conclusion, GV showed potential in improving cardiac function in a rat model of MI-induced heart failure. It alleviated myocardial damage, attenuated cardiac hypertrophy and fibrosis, and suppressed fibrotic markers. Further studies are needed to explore its clinical efficacy and underlying mechanisms in cardiac diseases beyond animal models.
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