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1.
Mi Sook Gwak Kwang-Woong Lee Shi Yeon Kim Jihyun Lee Jae Won Joh Sung Joo Kim Hwan Hyo Lee Jean Wan Park Gaab Soo Kim Suk-Koo Lee 《Liver transplantation》2005,11(3):331-335
During liver transplantation for hepatocellular carcinoma (HCC) patients, HCC could theoretically be introduced into the systemic circulation when salvaged blood is used with an autotransfusion device. Several reports have shown that some types of leukocyte depletion filters (LDFs) could completely reduce the risk for reintroducing some types of tumor cells. In this study, we tested the ability of the LDF (RCEZ1T, Pall Biomedical Co, NY, USA) to reduce the risk for reintroducing HCC cells in vitro by using a very sensitive detection method. We divided the test group into 6 groups: group I was 10 cells, group II was 20 cells, group III was 2 x 10(3) cells, group IV was 2 x 10(5) cells, group V was 2 x 10(6) cells, and group VI was 2 x 10(7) cells. The counted cells in 200 mL saline were passed through the RCEZ1T using the force of gravity. To identify the presence of cells, the pellet was resuspended, and polymerase chain reaction (PCR) was performed. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH), a housekeeping gene, was used as a primer. In groups I and II, the HCC cells were completely filtered in all experiments. However, in groups III, IV, and V, the HCC cells were not completely filtered in a few of the repeated experiments, with the unfiltered rate of tumor cells being between 8% and 20%. In group VI, the HCC cells were not completely filtered in all the repeated experiments. In conclusion, the RCEZ1T filter markedly reduced the risk for reintroduction of HCC cells. However, at high HCC cell load the filter cannot completely remove all the tumor cells. Further studies are required to assess the impact in clinical settings. 相似文献
2.
Effect of ketamine on apoptosis by energy deprivation in astroglioma cells using flow cytometry system 总被引:3,自引:0,他引:3
Apoptosis is a programmed, physiologic mode of cell death that plays an important role in tissue homeostasis. As for the central nervous system, ischemic insults can induce pathophysiologic cascade of apoptosis in neurophils. Impairment of astrocyte functions during brain ischemia can critically influence neuron survival by neuronglia interactions. We aimed to elucidate the protective effect of ketamine on apoptosis by energy deprivation in astrocytes. Ischemic insults was induced with iodoacetate/ carbonylcyanide m-chlorophenylhydrazone (IAA/CCCP) 1.5 mM/20 microm or 150 microm/2 microm for 1 hr in the HTB-15 and CRL-1690 astrocytoma cells. Then these cells were reperfused with normal media or ketamine (0.1 mM) containing media for 1 hr or 24 hr. FITC-annexin-V staining and propidium iodide binding were determined by using flow cytometry. Cell size and granularity were measured by forward and side light scattering properties of flow cytometry system, respectively. An addition of ketamine during reperfusion increased the proportion of viable cells. Ketamine alleviated cell shrinkage and increased granularity during the early period, and ameliorated cell swelling during the late reperfusion period. Ketamine may have a valuable effect on amelioration of early and late apoptosis in the astrocytoma cells, even though the exact mechanism remains to be verified. 相似文献
3.
Young Kyung Sung Geum Youn Gwak Moon Seok Choi Kwang Chul Koh Seung Woon Paik Byung Chul Yoo Joon Hyeok Lee 《Gut and liver》2012,6(4):520-523
Intestinal bypass surgery, particularly jejuno-ileal bypass surgery, performed for the purpose of weight reduction may cause an unexpected exacerbation of nonalcoholic steatohepatitis (NASH). Here, we report a case of NASH caused by small intestinal bacterial overgrowth, which developed after jejuno-colic bypass surgery and resolved dramatically after surgical correction. 相似文献
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Introduction:Since the coronavirus disease (COVID-19) outbreak in Wuhan, China, in December 2019, COVID-19 has become a worldwide pandemic. Muscle weakness and deconditioning caused by COVID-19-induced critical illness requires rehabilitation.Patient concerns:A 74-year-old male patient complained of general weakness after COVID-19, requiring ventilator treatment.Diagnosis:He was confirmed as having COVID-19 using a polymerase chain reaction test.Interventions:During admission in the intensive care unit, medical staff wearing level D protective equipment performed the bedside manual range of motion exercise. After a negative COVID-19 test, the patient was transferred to a general ward, where sitting balance training and pulmonary rehabilitation were additionally performed by rehabilitation therapists wearing protective gear. When the patient was able to stand up with support, standing balance training and sit-to-stand training were performed.Outcomes:After a month of rehabilitation, the patient could sit alone, but he needed help with standing balance. The Berg Balance Scale score improved from 0 to 4, and the Modified Barthel Index score improved from 8 to 18. He was able to breathe in room air without an oxygen supply.Lessons:This case report shows an example of how safe and effective rehabilitation can be provided to COVID-19 patients. 相似文献
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Jem Ma Ahn Yong-Han Paik Jun Hee Lee Ju Yeon Cho Won Sohn Geum-Youn Gwak Moon Seok Choi Joon Hyeok Lee Kwang Cheol Koh Seung Woon Paik Byung Chul Yoo 《Clinical and molecular hepatology》2015,21(4):393-397
A 51-year-old male patient with chronic hepatitis B was referred to our hospital due to a 1-cm liver nodule on ultrasonography. Alpha-fetoprotein (AFP) was slightly elevated. The nodule showed prolonged enhancement on dynamic liver magnetic resonance imaging and appeared as a hyperintensity on both diffusion-weighted and T2-weighted imaging. The nodule was followed up because it was small and typical findings of hepatocellular carcinoma (HCC) were not observed in the dynamic imaging investigations. However, liver contrast-enhanced ultrasonography performed 1 month later showed enhancement during the arterial phase and definite washout during the delayed phase. Also, AFP had increased to over 200 ng/mL even though AST and ALT were decreased after administering an antiviral agent. He was presumptively diagnosed as HCC and underwent liver segmentectomy. Microscopy findings of the specimen indicated bile duct adenoma. After resection, the follow-up AFP had decreased to within the normal range. This patient represents a case of bile duct adenoma with AFP elevation mimicking HCC on contrast-enhanced ultrasonography. 相似文献
8.
Ju‐Yeon Cho Won Sohn Yong‐Han Paik Geum‐Youn Gwak Moon Seok Choi Joon Hyeok Lee Kwang Cheol Koh Seung Woon Paik Chan Guk Park 《Journal of viral hepatitis》2020,27(9):951-954
The aim of this study was to investigate the on‐treatment kinetics of quantitative HBsAg during entecavir therapy to predict the treatment period needed to achieve functional cure. From a cohort of 1009 CHB treatment‐naïve patients who were started on entecavir, the kinetics of quantitative HBsAg decline was assessed in 410 patients by a linear mixed model. The difference in the kinetics of quantitative HBsAg was determined based on the HBeAg positivity, HBeAg seroclearance and presence of baseline liver cirrhosis. Among the 410 patients, 213 patients (52.0%) were HBeAg‐positive and 217 patients (66.1%) were male with a median age of 48 years. During a median follow‐up of 53.5 months, the quantitative HBsAg level showed a slow but consistent decrease. The expected log qHBsAg levels as a function of time during entecavir treatment in HBeAg(+) and HBeAg(?) patients were 3.4773‐0.0039 × Months and 3.1853‐0.0036 × Months, respectively. The estimated time to clearance of quantitative HBsAg in our study was greater than 74.1 years in HBeAg‐positive patients and 73.5 years in HBeAg‐negative patients. The calculated time to achieve functional cure is lifelong without regard to HBeAg seroclearance or presence of liver cirrhosis. The mathematical modelling from a long‐term follow‐up of chronic hepatitis B patients on entecavir shows that HBsAg clearance requires decades of treatment. Thus, lifelong therapy is inevitable in entecavir‐treated patients to achieve functional cure. 相似文献
9.
A fluidic gallium-based liquid metal (LM) is an interesting material for producing flexible and stretchable electronics. A simple and reliable method developed to facilitate the fabrication of a photodetector based on an LM is presented. A large and thin conductive eutectic gallium indium (EGaIn) film can be fabricated with compressed EGaIn microdroplets. A solution of LM microdroplets can be synthesized by ultrasonication after mixing with EGaIn and ethanol and then dried on a PDMS substrate. In this study, a conductive LM film was obtained after pressing with another substrate. The film was sufficiently conductive and stretchable, and its electrical conductivity was 2.2 × 106 S/m. The thin film was patterned by a fiber laser marker, and the minimum line width of the pattern was approximately 20 μm. Using a sticky PDMS film, a Ga2O3 photo-responsive layer was exfoliated from the fabricated LM film. With the patterned LM electrode and the transparent photo-responsive film, a flexible photodetector was fabricated, which yielded photo-response-current ratios of 30.3%, 14.7%, and 16.1% under 254 nm ultraviolet, 365 nm ultraviolet, and visible light, respectively. 相似文献
10.