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ATF6 aggravates apoptosis in early porcine embryonic development by regulating organelle homeostasis under high-temperature conditions

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动物学研究(英文) 2023年第5期44卷 848-859页

作者： Ming-Hong Sun Wen-Jie Jiang Xiao-Han Li Song-Hee Lee geun heo Dongjie Zhou Zhi Chen Xiang-Shun Cui Department of Animal Science Chungbuk National UniversityCheongjuSouth Korea 28644Korea College of Animal Science and Technology Yangzhou UniversityYangzhouJiangsu 225009China

Activating transcription factor 6(ATF6),one of the three sensor proteins in the endoplasmic reticulum(ER),is an important regulator of ER stress-induced apoptosis.ATF6 resides in the ER and,upon activation,is translocated to the Golgi apparatus,where it is cleaved by site-1 protease(S1P)to generate an amino-terminal cytoplasmic fragment.Although recent studies have made progress in elucidating the regulatory mechanisms of ATF6,its function during early porcine embryonic development under high-temperature(HT)stress remains unclear.In this study,zygotes were divided into four groups:control,HT,HT+ATF6 knockdown,and HT+PF(S1P inhibitor).Results showed that HT exposure induced ER stress,which increased ATF6 protein expression and led to a decrease in the blastocyst rate.Next,ATF6 expression was knocked down in HT embryos under microinjection of ATF6 double-stranded RNA(dsRNA).Results revealed that ATF6 knockdown(ATF6-KD)attenuated the increased expression of CHOP,an ER stress marker,and Ca2+release induced by HT.In addition,ATF6-KD alleviated homeostasis dysregulation among organelles caused by HT-induced ER stress,and further reduced Golgi apparatus and mitochondrial dysfunction in HT embryos.AIFM2 is an important downstream effector of ATF6.Results showed that ATF6-KD reduced the occurrence of AIFM2-mediated embryonic apoptosis at HT.Taken together,our findings suggest that ATF6 is a crucial mediator of apoptosis during early porcine embryonic development,resulting from HT-induced ER stress and disruption of organelle homeostasis.

关键词： ATF6 Embryo High temperature ER stress Organelle homeostasis

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Management of bleeding from pseudoaneurysms following pancreaticoduodenectomy

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World Journal of Gastroenterology 2010年第10期16卷 1239-1244页

作者： Hyung geun Lee Jin Seok heo Seong Ho Choi Dong Wook Choi Department of Surgery Samsung Medical CenterSungkyunkwan University School of Medicine

AIM:To review the clinical course and the management of pseudoaneurysms post-pancreaticoduodenectomy.METHODS: Medical records of 907 patients who underwent pancreaticoduodenectomies from January 1995 to May 2007 were evaluated retrospectively. The clinical course, management strategy, and outcome of ruptured pseudoaneurysms cases were analyzed.RESULTS: Twenty-seven (3.0%) of 907 cases had post-operative hemorrhage from ruptured pseudoan-eurysms. Pancreatic fistula was evident in 12 (44%) cases. Sentinel bleeding appeared in 21 (77.8%) cases. Of the 27 cases, 11 (41%) cases demonstrated bleeding pseudoaneurysm of the ligated gastroduodenal artery, 8 (30%) of the right, proper, common hepatic artery, 2 (7%) of the right gastric artery, and 4 (15%) of the peripancreatic arteries. The remaining two patients died due to sudden-onset massive hemorrhage and pseudoaneurysm rupture was suspected. Emergent operation was performed on 2 cases directly without angiography. Angiography was attempted in 23 cases. Eighteen (78.2%) cases succeeded to hemostasis; the five failed cases were explored. After embolization of the hepatic artery, five cases developed liver abscesses or infarction and a single case of hepatic failure expired. Gastroduodenal artery embolization with common hepatic artery stent insertion was performed to enhance hepatic artery flow in a single case and was successfully controlled.CONCLUSION: Bleeding pseudoaneurysms are among the most serious and fatal complications following pancreaticoduodenectomy. Diagnostic angiography has been preferred over endoscopy and is rapidly becoming the standard therapeutic treatment for bleeding pseudoaneurysms.

关键词： Pseudoaneurysm Pseudoaneurysm Angi-ography Embolization Stent graft

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Carcinoma of the middle bile duct:Is bile duct segmental resection appropriate?

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World Journal of Gastroenterology 2009年第47期15卷 5966-5971页

作者： Hyung geun Lee Sang Hoon Lee Dong Do Yoo Kwang Yeol Paik Jin Seok heo Seong Ho Choi Dong Wook Choi Department of Surgery Samsung Medical CenterSungkyunkwan University School of MedicineSeoul 135-710South Korea

AIM:To compare survival between bile duct segmental resection(BDSR)and pancreaticoduodenectomy(PD) for treating distal bile duct cancers. METHODS:Retrospective analysis was conducted for 45 patients in a BDSR group and for 149 patients in a PD group. RESULTS:The T-stage(P<0.001),lymph node invasion (P=0.010)and tumor differentiation(P=0.005)were significant prognostic factors in the BDSR group.The 3-and 5-year overall survival rates for the BDSR group and PD group were 51.7%and 36.6%,respectively and 46.0%and 38.1%,respectively(P=0.099).The BDSR group and PD group did not show any significant difference in survival when this was adjusted for the TNM stage.The 3-and 5-year survival rates were: stageⅠa[BDSR(100.0%and 100.0%)vs PD(76.9% and 68.4%)(P=0.226)];stageⅠb[BDSR(55.8% and 32.6%)vs PD(59.3%and 59.3%)(P=0.942)]; stageⅡb[BDSR(19.2%and 19.2%)vs PD(31.9%and 14.2%)(P=0.669)]. CONCLUSION:BDSR can be justified as an alternative radical operation for patients with middle bile duct inselected patients with no adjacent organ invasion and resection margin is negative.

关键词：胆管管段癌十二指肠入侵性生存率 PD 切除术

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Is it possible to differentiate gastric GISTs from gastric leiomyomas by EUS?

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World Journal of Gastroenterology 2009年第27期15卷 3376-3381页

作者： Gwang Ha Kim Do Youn Park Suk Kim Dae Hwan Kim Dong heon Kim Cheol Woong Choi Jeong heo geun Am Song Department of Internal Medicine Pusan National University School of Medicine and Medical Research Institute Pusan National University HospitalBusan 602-739 South Korea Department of Pathology Pusan National University School of MedicineBusan 602-739 South Korea Department of Radiology Pusan National University School of MedicineBusan 602-739 South Korea Department of Surgery Pusan National University School of MedicineBusan 602-739South Korea

AIM: To evaluate the ultrasonog raphy (EUS) features of gastric gastrointestinal stromal tumors (GISTs) as compared with gastric leiomyomas and then to determine the EUS features that could predict malignant GISTs.METHODS: We evaluated the endoscopic EUS features in 53 patients with gastric mesenchymal tumors conf irmed by histopathologic diagnosis. The GISTs were classif ied into benign and malignant groups according to the histological risk classif ication.RESULTS: Immunohistochemical analyses demon-strated 7 leiomyomas and 46 GISTs. Inhomogenicity, hyperechogenic spots, a marginal halo and higher echogenicity as compared with the surrounding muscle layer appeared more frequently in the GISTs than in the leiomyomas (P < 0.05). The presence of at least two of these four features had a sensitivity of 89.1% and a specifi city of 85.7% for predicting GISTs. Except for tumor size and irregularity of the border, most of the EUS features were not helpful for predicting the malignant potential of GISTs. On multivariate analysis, only the maximal diameter of the GISTs was an independent predictor. The optimal size for predicting malignant GISTs was 35 mm. The sensitivity and specificity using this value were 92.3% and 78.8%, respectively.CONCLUSION: EUS may help to differentiate gastric GISTs from gastric leiomyomas. Once GISTs are suspected, surgery should be considered if the size is greater than 3.5 cm.

关键词：胃肠道平滑肌内镜超声病理诊断多变量分析风险分类化学分析

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Associated factors for a hyperechogenic pancreas on endoscopic ultrasound

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World Journal of Gastroenterology 2010年第34期16卷 4329-4334页

作者： Cheol Woong Choi Gwang Ha Kim Dae Hwan Kang Hyung Wook Kim Dong Uk Kim Jeong heo geun Am Song Do Youn Park Suk Kim Department of Internal Medicine Pusan National University School of Medicine and the Medical Research Institute Pusan National University Hospital Department of Internal Medicine Pusan National University School of Medicine and the Medical Research Institute Department of Pathology Pusan National University School of Medicine and the Medical Research Institute Department of Radiology Pusan National University School of Medicine and the Medical Research Institute

AIM: To identify the associated risk factors for hyperechogenic pancreas (HP) which may be observed on endoscopic ultrasound (EUS) and to assess the relationship between HP and obesity. METHODS: From January 2007 to December 2007, we prospectively enrolled 524 consecutive adults who were scheduled to undergo EUS. Patients with a history of pancreatic disease or with hepatobiliary or advanced gastrointestinal cancer were excluded. Finally,284 patients were included in the analyses. We further analyzed the risk of HP according to the categories of visceral adipose tissue (VAT) and subcutaneous adipose tissue in 132 patients who underwent abdominal computed tomography scans. RESULTS: On univariate analysis, age older than 60 years, obesity (body mass index > 25 kg/m 2 ), fatty liver, diabetes mellitus, hypertension and hypercholesterolemia were identified as risk factors associated with HP (P < 0.05). On multivariate analysis, fatty liver [P = 0.008, odds ratio (OR) = 2.219], male gender (P = 0.013, OR = 2.636), age older than 60 years (P = 0.001, OR = 2.874) and hypertension (P = 0.044, OR = 2.037) were significantly associated with HP. In the subgroup analysis, VAT was a statistically significant risk factor for HP (P = 0.010, OR = 5.665, lowest quartile vs highest quartile). CONCLUSION: HP observed on EUS was associated with fatty liver, male gender, age older than 60 years, hypertension and VAT.

关键词： Endoscopic Ultrasound Hyperechogenic pancreas Obesity

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Endoscopic removal of gastric ectopic pancreas:An initial experience with endoscopic submucosal dissection

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World Journal of Gastroenterology 2010年第36期16卷 4589-4593页

作者： Dong Yup Ryu Gwang Ha Kim Do Youn Park Bong Eun Lee Jae Hoon Cheong Dong Uk Kim Hyun Young Woo Jeong heo geun Am Song Department of Internal Medicine Pusan National University School of Medicine and Medical Research InstitutePusan National University HospitalBusan 602-739South Korea Department of Pathology Pusan National University School of MedicineBusan 602-739South Korea

AIM:To evaluate the therapeutic usefulness and safety of endoscopic resection in patients with gastric ectopic pancreas.METHODS:A total of eight patients with ectopic pancreas were included.All of them underwent endoscopic ultrasonography before endoscopic resection.Endo-scopic resection was performed by two methods:endo-scopic mucosal resection(EMR)by the injection-and-cut technique or endoscopic mucosal dissection(ESD).RESULTS:We planned to perform EMR in all eight cases but EMR was successful in only four cases.In the other four cases,saline spread into surrounding normal tissues and the lesions becameattened,which made it impossible to remove them by EMR.Inthose four cases,we performed ESD and removed the lesions without any complications.CONCLUSION:If conventional EMR is difficult to remove gastric ectopic pancreas,ESD is a feasible alternative method for successful removal.

关键词： Ectopic pancreas Endoscopic resection Endoscopic ultrasonography

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Controlled Ag-driven superior rate-capability of Li4Ti5O12 anodes for lithium rechargeable batteries

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Nano Research 2013年第5期6卷 365-372页

作者： Jae-geun Kim Dongqi Shi Min-Sik Park Goojin Jeong Yoon-Uk heo Minsu Seo Young-Jun Kim Jung Ho Kim Shi Xue Dou Institute for Superconducting and Electronic Materials University of Wollongong North Wollongong NSW2500 Australia Advanced Batteries Research Center Korea Electronics Technology Institute Seongnam 463-816 Republic of Korea Research Facility Center Graduate Institute of Ferrous Technology Pohang University of Science and Technology Pohang 790-784 Republic of Korea

形态学和 Li4Ti5O12 阳极的电子结构被知道在锂决定它的电、电气化学的性质可充电的电池。Ag-Li4Ti5O12 nanofibers 讲道理地被设计了并且由一种 electrospinning 技术综合了满足要求一个维(1D ) 形态学和优异电的电导率。此处，我们发... 详细信息

形态学和 Li4Ti5O12 阳极的电子结构被知道在锂决定它的电、电气化学的性质可充电的电池。Ag-Li4Ti5O12 nanofibers 讲道理地被设计了并且由一种 electrospinning 技术综合了满足要求一个维(1D ) 形态学和优异电的电导率。此处，我们发现了 1D Ag-Li4Ti5O12 nanofibers 表演与赤裸的 Li4Ti5O12 nanofibers 相比提高了特定的能力，率能力，和骑车的稳定性，由于 Ag nanoparticles (< 5 nm ) ，它主要在在 Li4Ti5O12 主要粒子之间的接口被散布。这结构的形态学由便于费用转移动力学比赤裸的 Li4Ti5O12 nanofibers 产生 20% 更高的率能力。我们的调查结果提供一个有效方法为锂改进 Li4Ti5O12 阳极的电气化学的表演可充电的电池。

关键词：银纳米颗粒锂离子充电电池钛酸锂锂阳极能力可充电锂电池纳米纤维电化学性能

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Adult intussusception caused by cystic lymphangioma of the colon:A rare case report

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World Journal of Gastroenterology 2006年第13期12卷 2130-2132页

作者： Tae Oh Kim Jung Hyun Lee Gwang Ha Kim Jeong heo Dae Hwan Kang geun Am Song Mong Cho Division of Gastroenterology Department of Internal Medicine College of MedicinePusan National University College of MedicineBusanKorea

我们经历了结肠的 cys- tic 淋巴管瘤在为血粪的主诉进入我们的医院的 32 岁女性引起的摄取的一个盒子。在 colonoscopic 考试，有有光滑的粘膜表面的梗的膀胱的质量在下降冒号被注意。腹的 ultrasonography 和计算断层摄影术作为一个... 详细信息

我们经历了结肠的 cys- tic 淋巴管瘤在为血粪的主诉进入我们的医院的 32 岁女性引起的摄取的一个盒子。在 colonoscopic 考试，有有光滑的粘膜表面的梗的膀胱的质量在下降冒号被注意。腹的 ultrasonography 和计算断层摄影术作为一个领先的点与一个多有细胞的囊性瘤揭示了左冒号摄取。突现的手术被动。在组织病理学说的考试上，膀胱的联盟者扩大了含纤维的氏族内皮细胞层和 septated 衬里的空格一是在场的。病理学的诊断是冒号的膀胱的淋巴管瘤。尽管摄取由于在一个成年人的淋巴管瘤是稀罕的，它应该它是可能的诊断的被考虑。

关键词：膀胱癌肠套叠病理机制成年

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Self-expandable metallic stents for palliation of patients with malignant gastric outlet obstruction caused by stomach cancer

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World Journal of Gastroenterology 2007年第6期13卷 916-920页

作者： Tae Oh Kim Dae Hwan Kang Gwang Ha Kim Jeong heo geun Am Song Mong Cho Dong heon Kim Mun Sup Sim Department of Internal Medicine Pusan National University College of Medicine Busan Korea Department of General Surgery Pusan National University College of Medicine Busan Korea

AIM: To ascertain clinical outcome and complications of self-expandable metal stents for endoscopic palliation of patients with malignant obstruction of the gastrointestinal (GI) tract. METHODS: A retrospective review was performed throughout August 2000 to June 2005 of 53 patients with gastric outlet obstruction caused by stomach cancer. All patients had symptomatic obstruction including nausea, vomiting, and decreased oral intake. All received self-expandable metallic stents. RESULTS: Stent implantation was successful in all 53 (100%) patients. Relief of obstructive symptoms was achieved in 43 (81.1%) patients. No immediate stent-related complications were noted. Seventeen patients had recurrent obstruction (tumor ingrowth in 14 patients, tumor overgrowth in 1 patient, and partial distal stent migration in 2 patients). The mean survival was 145 d. Median stent patency time was 187 d. CONCLUSION: Endoscopic placement of self-expandable metallic stents is a safe and effective treatment for the palliation of patients with inoperable malignant gastric outlet obstruction caused by stomach cancer.

关键词：胃癌胃肠道恶性梗阻幽门梗阻自扩张金属内支架缓解作用

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