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    题名 作者 年代 出处 被引量
1乙二醇中化学还原合成片状银粉显示文摘研究了乙二醇(EG)介质中以聚乙烯吡咯烷酮(PVP)为保护剂,以氯铂酸为催化剂以硝酸银为前驱物经化学还原制备片状银粉的过程,探索与分析影响银粉形貌的主要因素.结果表明,首先被还原出来的铂成为外来晶种,是形成片状银的关键因素.它在原位为随后还原与沉淀的银提供一个平面.PVP与银离子形成络合离子,控制游离银离子的浓度,影响银的成核与生长.同时,PVP被选择性地吸附于银的粒子表面,影响了银成核与生长,最终形成片状银粉.梁焕珍 Kim Dong-Jin Chung Hun S. 张洁 喻克宁 黎少华 李锐星 2003物理化学学报2003,19,2:26
2Endoscopic treatment for gastrointestinal stromal tumor: Advantages and hurdles显示文摘One of the most prominent characteristics of gastrointestinal stromal tumors(GISTs) is their unpredictable and variable behavior. GISTs are not classified as 'benign' or 'malignant' but are rather stratified by their associated clinical risk of malignancy as determined by tumor size, location, and number of mitoses identified during surgicalhistology. The difficulty in assessing the malignant potential and prognoses of GISTs as well as the increasing incidence of 'incidental GISTs' presents challenges to gastroenterologists. Recently, endoscopic enucleation has been actively performed as both a diagnostic and therapeutic intervention for GISTs. Endoscopic enucleation has several advantages, including keeping the stomach intact after the removal of GISTs, a relatively short hospital stay, a conscious sedation procedure, relatively low cost, and fewer human resources required compared with surgery. However, a low complete resection rate and the risk of perforation could reduce the overall advantages of this procedure. Endoscopic full-thickness resection appears to achieve a very high R0 resection rate. However, this technique absolutely requires a very skilled operator. Moreover, there is a risk of peritoneal seeding due to large active perforation. Laparoscopy endoscopy collaborations have been applied for more stable and pathologically acceptable management. These collaborative procedures have produced excellent outcomes. Many procedures have been developed and attempted because they were technically possible. However, we should first consider the theoretical basis for each technique. Until the efficacy and safety of sole endoscopic access are proved, the laparoscopy endoscopy collaborative procedure appears to be an appropriate method for minimally destructive GIST surgery.Hyung Hun Kim 2015World Journal of Gastrointestinal Endoscopy2015,7,3:24
3Anti-inflammatory effect of honokiol is mediated by PI3K/Akt pathway suppression显示文摘目的:在这研究,我们在各种各样的煽动性的事件上调查了 honokiol 的规章的效果由单核白血球/巨噬细胞( U937/RAW264.7 房间)和淋巴细胞(脾的淋巴细胞和 CTLL-2 房间)和他们的通常认为的行动 mechanism.Methods 调停了:以便调查规章的效果,各种各样的房间线和原电池( U937 , RAW264.7 , CTLL-2 房间,和脾的淋巴细胞)被采用,各种各样的煽动性的事件例如煽动性的调停人,房间粘附,房间增长,和早发信号的串联的生产,是 chosen.Results : Honokiol 强烈禁止了各种各样的煽动性的回答,例如:(i)起来氮的氧化物的规定(没有),前列腺素 E_2 和 TNF-alpha 生产和 costimulatory 分子 CD80 由脂肪的多糖( LPS )导致了;( i i )贝它 1-integrin ( CD29 )的功能的激活由 U937 房间房间和 cell-fibronectin 粘附估计了;( iii )淋巴细胞和 CD8+CTLL-2 房间增长的改进由 LPS 刺激了, phytohemaglutinin A (公众房产管理局),和刀豆球蛋白 A 或 interleukin ( IL )在规定上面的 -2;and(iv)the transcriptional 可诱导没有 synthase , TNF-alpha , cyclooxygenase-2 , IL-12 ,并且单核白血球 chemoattractant 蛋白质( MCP ) -1.These honokiol 的反煽动性的效果似乎被打断早激活的细胞内部的发信号的分子 phosphoinositide 3-kinase ( PI3K )调停 /Akt ,然而并非 Src ,细胞外的调整信号的激酶,和 p38 根据药理学,生物化学,并且功能的 analyses.Conclusion :这些结果建议 honokiol 可以在 PI3K/Akt 小径上由于禁止的效果与多潜在的活动作为一个有势力扮演反煽动性的代理人。Byung Hun KIM Jae Youl CHO 2008Acta Pharmacologica Sinica2008,29,1:18
4Role of oxygen free radicals in patients with acute pancreatitis显示文摘The generation of oxygen free radicals has been implicated in the pathogenesis of experimental pancreatitis.The aim of this study was to determine the role of oxygen free radicals in patients with acute pancreatitis.METHODS: The plasma levels of C-reactive protein (CRP),lipid peroxide (LPO), myeloperoxidase (MPO) and superoxide dismutase (SOD) were measured in 13 patients with acute pancreatitis and 14 healthy volunteers.RESULTS: Among the patients with acute pancreatitis, there were higher plasma levels of LPO and MPO and lower SOD activity in patients with severe pancreatitis than in those with mild pancreatitis. However, there was no significant difference in the serum marker of oxidative stress no matter what the etiology was. The LPO level was especially correlated with the concentration of serum CRP and CT severity index.CONCLUSION: The oxygen free radicals may be closely associated with inflammatory process and the severity of acute pancreatitis. Especially, the concentration of plasma LPO is a meaningful index for determining the severity of the disease.Byung Kyu Park Jae Bock Chung Jin Heon Lee Jeong Hun Suh Seung Woo Park Si Young Song Hyeyoung Kim Kyung Hwan Kim Jin Kyung Kang 2003World Journal of Gastroenterology2003,9,10:18
5Endoscopic ultrasound-guided biliary drainage with placement of a fully covered metal stent for malignant biliary obstruction显示文摘AIM:To determine the utility of endoscopic ultrasoundguided biliary drainage(EUS-BD)with a fully covered self-expandable metal stent for managing malignant biliary stricture. METHODS:We collected data from 13 patients who presented with malignant biliary obstruction and underwent EUS-BD with a nitinol fully covered selfexpandable metal stent when endoscopic retrograde cholangiopancreatography(ERCP)fails.EUS-guided choledochoduodenostomy(EUS-CD)and EUS-guided hepaticogastrostomy(EUS-HG)was performed in 9 patients and 4 patients,respectively. RESULTS:The technical and functional success rate was 92.3%(12/13)and 91.7%(11/12),respectively. Using an intrahepatic approach(EUS-HG,n=4),there was mild peritonitis(n=1)and migration of the metal stent to the stomach(n=1).With an extrahepatic approach(EUS-CD,n=10),there was pneumoperitoneum(n=2),migration(n=2),and mild peritonitis (n=1).All patients were managed conservatively with antibiotics.During follow-up(range,1-12 mo),there was re-intervention(4/13 cases,30.7%)necessitated by stent migration(n=2)and stent occlusion(n=2). CONCLUSION:EUS-BD with a nitinol fully covered self-expandable metal stent may be a feasible and effective treatment option in patients with malignant biliary obstruction when ERCP fails.Tae Hyeon Kim Seong Hun Kim Hyo Jeong Oh Young Woo Sohn Seung Ok Lee 2012World Journal of Gastroenterology2012,18,20:16
6Tooth regeneration: a revolution in stomatology and evolution in regenerative medicine显示文摘A tooth is a complex biological organ and consists of multiple tissues including the enamel, dentin, cementum and pulp. Tooth loss is the most common organ failure. Can a tooth be regenerated? Can adult stem cells be orchestrated to regenerate tooth structures such as the enamel, dentin, cementum and dental pulp, or even an entire tooth? If not, what are the therapeutically viable sources of stem cells for tooth regeneration? Do stem cells necessarily need to be taken out of the body, and manipulated ex vivo before they are transplanted for tooth regeneration? How can regenerated teeth be economically competitive with dental implants? Would it be possible to make regenerated teeth affordable by a large segment of the population worldwide? This review article explores existing and visionary approaches that address some of the above-mentioned questions. Tooth regeneration represents a revolution in stomatology as a shift in the paradigm from repair to regeneration: repair is by metal or artificial materials whereas regeneration is by biological restoration. Tooth regeneration is an extension of the concepts in the broad field of regenerative medicine to restore a tissue defect to its original form and function by biological substitutes.Sibel Yildirim Susan Y. Fu Keith Kim Hong Zhou Chang Hun Lee Ang Li Sahng Gyoon Kim Shuang Wang Jeremy J. Mao 2011International Journal of Oral Science2011,3,3:16
7Comparative study of chitosan/fibroin–hydroxyapatite and collagen membranes for guided bone regeneration in rat calvarial defects: micro-computed tomography analysis显示文摘This study aimed to utilize micro-computed tomography(micro-CT)analysis to compare new bone formation in rat calvarial defects using chitosan/fibroin–hydroxyapatite(CFB–HAP)or collagen(Bio-Gide)membranes.Fifty-four(54)rats were studied.A circular bony defect(8 mm diameter)was formed in the centre of the calvaria using a trephine bur.The CFB–HAP membrane was prepared by thermally induced phase separation.In the experimental group(n518),the CFB–HAP membrane was used to cover the bony defect,and in the control group(n518),a resorbable collagen membrane(Bio-Gide)was used.In the negative control group(n518),no membrane was used.In each group,six animals were euthanized at 2,4 and 8 weeks after surgery.The specimens were then analysed using micro-CT.There were significant differences in bone volume(BV)and bone mineral density(BMD)(P,0.05)between the negative control group and the membrane groups.However,there were no significant differences between the CFB–HAP group and the collagen group.We concluded that the CFB–HAP membrane has significant potential as a guided bone regeneration(GBR)membrane.Jae Min Song Sang Hun Shin Yong Deok Kim Jae Yeol Lee Young Jae Baek Sang Yong Yoon Hong Sung Kim 2014International Journal of Oral Science2014,6,2:15
8Loss of CDX2 expression is associated with poor prognosis in colorectal cancer patients显示文摘AIM:To investigate the clinicopathologic characteristics and prognostic implications associated with loss of CDX2 expression in colorectal cancers(CRCs).METHODS:We immunohistochemically evaluated CDX2 expression in 713 CRCs and paired our findings to clinicopathologic and molecular characteristics of each individual.Endpoints included cytokeratin 7 and CK20 expression,microsatellite instability,Cp G island methylator phenotype,and KRAS and BRAF mutation statuses.Univariate and multivariate survival analysis was performed to reveal the prognostic value of CDX2 downregulation.RESULTS:CDX2 expression was lost in 42(5.9%) patients.Moreover,loss of CDX2 expression was associated with proximal location,infiltrative growth,advanced T,N,M and overall stage.On microscopic examination,loss of CDX2 expression was associated with poor differentiation,increased number of tumor-infiltrating lymphocytes,luminal serration and mucin production.Loss of CDX2 expression was also associated with increased CK7 expression,decreased CK20 expression,Cp G island methylator phenotype,microsatellite instability and BRAF mutation.In a univariate survival analysis,patients with loss of CDX2 expression showed worse overall survival(P < 0.001) and progression-free survival(P < 0.001).In a multivariate survival analysis,loss of CDX2 expression was an independent poor prognostic factor of overall survival [hazard ratio(HR) = 1.72,95%CI:1.04-2.85,P = 0.034] and progression-free survival(HR = 1.94,95%CI:1.22-3.07,P = 0.005).CONCLUSION:Loss of CDX2 expression is associated with aggressive clinical behavior and can be used as a prognostic marker in CRCs.Jeong Mo Bae Tae Hun Lee Nam-Yun Cho Tae-You Kim Gyeong Hoon Kang 2015World Journal of Gastroenterology2015,21,5:14
9Effect of intraperitoneal local anesthetic on pain characteristics after laparoscopic cholecystectomy显示文摘AIM : To systematically evaluate the effect of intraperitoneal local anesthetic on pain characteristics after laparoscopic cholecystectomy(LC).METHODS: We searched MEDLINE, EMBASE, and the Cochrane Library. Randomized controlled trials in English that compared the effect of intraperitoneal administration of local anesthetics on pain with that of placebo or nothing after elective LC under general anesthesia were included. The primary outcome variables analyzed were the combined scores of abdominal, visceral, parietal, and shoulder pain after LC at multiple time points. We also extracted pain scores at resting and dynamic states.RESULTS: We included 39 studies of 3045 patients in total. The administration of intraperitoneal local anesthetic reduced pain intensity in a resting state after laparoscopic cholecystectomy: abdominal [standardized mean difference(SMD) =-0.741; 95%CI:-1.001 to-0.48, P < 0.001]; visceral(SMD =-0.249; 95%CI:-0.493 to-0.006, P = 0.774); and shoulder(SMD =-0.273; 95%CI:-0.464 to-0.082, P = 0.097). Application of intraperitoneal local anesthetic significantly reduced the incidence of shoulder pain(RR = 0.437; 95%CI: 0.299 to 0.639, P < 0.001). There was no favorable effect on resting parietal or dynamic abdominal pain.CONCLUSION: Intraperitoneal local anesthetic as an analgesic adjuvant in patients undergoing laparoscopic cholecystectomy exhibited beneficial effects on postoperative abdominal, visceral, and shoulder pain in a resting state.Geun Joo Choi Hyun Kang Chong Wha Baek Yong Hun Jung Dong Rim Kim 2015World Journal of Gastroenterology2015,21,47:12
10Efficacy of Saam acupuncture treatment on improvement of immune cell numbers in cancer patients:a pilot study显示文摘OBJECTIVE: To collect preliminary data on the effects of Saam acupuncture with regard to the immunity in cancer patients.METHODS: Ten cancer patients were analyzed for improvements in immunity. Acupuncture was applied at the 5 acupuncture points, Jingqu(LU 8), Zutonggu(BL 66), Yanggu(SI 5), Yangchi(TE 4), and Zhongwan(CV 12) for 2 weeks with 4 sessions. We assessed the effect of Korean Saam acupuncture on the immune system in cancer patients by measuring particular blood cell subsets, including CD3 +,CD4+, CD8+, CD19+, and CD56+ cells, as well as total white blood cell count, absolute neutrophil count, and fatigue score. The measurement was performed before and after acupuncture and at a 2-week follow-up.RESULTS: There was a statistically significant increase in the number of CD3+(P=0.023) and CD8+ cells(P<0.001) and T-cell subsets, as well as a decrease in the fatigue severity scale(FSS) score(P=0.001) after Saam acupuncture using the 5 acupoints.CONCLUSION: Acupuncture may improve the immune system by increasing the counts of a few immune cells and relieve fatigue in cancer patients by decreasing FSS scores. Although this was a non-controlled study, it constitutes preliminary research investigating the potential effects of Saam acupuncture in increasing the counts of several immune cells in cancer patients.Dae-Joon Kim Seong-Hoon Park Jung-Chul Seo Kyung Soon Kim Ki Cheul Sohn Im Hee Shin Hun Mo Ryoo 2014Journal of Traditional Chinese Medicine2014,34,5:11
11Factors influencing syphilis treatment failure and/or re-infection in HIV co-infected patients: immunosuppression or behaviors显示文摘背景最近的研究报导了有高度的梅毒的总的来说增加的率人的免疫不全评估病毒(HIV ) 合作感染。然而,几乎在 HIV 影响梅毒治疗失败或再感染的因素没有很少信息共同感染的病人。我们进行了研究评估在 HIV 与梅毒治疗 failure/re-infection 联系的因素到 2007 年 12 月的从 2005 年 1 月的感染 HIV 的病人的 3542 个医药记录列在后面在上面的我们考察了的共同感染的 patients.Methods 在在纽约的 HIV 诊所城市。病人们被快速的血浆分类重获 titer ( RPR )进 success/serofast (在到在治疗以后的 12 个月的 RPR 的4褶层减少, RPR 变换到没有4褶层增加的非电抗的、固执地稳定的反应 RPR ),并且 failure/re-infection (失败到在到在治疗以后的 12 个月的 RPR 的减少 4 褶层,从基线的 RPR 的4褶层增加)在满足了资格标准的 156 个病人的一个总数之中的 .Results ,( 78.2 ) 122 在 success/serofast 范畴下面,并且( 21.8 ) 34 在 failure/r 下面高度活跃的 antiretroviral 治疗(HAART ) 的 HIV 病毒的负担, CD4 房间计数,和使用没与梅毒治疗 failure/re-infection 被联系。然而,早梅毒舞台(OR:11.036, 95 CI:2.499-48.740, P=0.002 ) 并且高度(164 ) RPR titers (或:715.921, 95 CI:422.175-23 113.396, P 0.001 ) 显著地 associated.Conclusions 没有关联与梅毒治疗失败或再感染与沮丧的有免疫力的州被看见。然而,有早阶段梅毒的协会建议危险心理性行为可以是最重要的带因素,强调对安全的性教育的需要。Jong Hun Kim George Psevdos Jr Jin Suh Victoria Sharp 2011Chinese Medical Journal2011,,14:10
12Tailoring strength-ductility balance of caliber-rolled AZ31 Mg alloy through subsequent annealing显示文摘Recently,multi-pass caliber rolling has been shown to be effective for Mg alloys.This study investigated the effect of subsequent annealing on the mechanical properties of a caliber-rolled AZ31 Mg alloy to modulate the strength-ductility relationship.This annealing gave rise to different trends in mechanical properties depending on the temperature regime.Low-temperature annealing(T≤473 K)exhibited a typical trade-off relationship,where an increase in annealing temperature resulted in increased ductility but decreased strength and hardness.Such a heat treatment did not degrade the high strength-ductility balance of the caliber-rolled alloy,suggesting that the mechanical properties could be tailored for different potential applications.In contrast,high-temperature annealing(T>473 K)caused a simultaneous deterioration in strength,hardness,and ductility with increasing annealing temperature.These differences are discussed in terms of the varying microstructural features under the different investigated annealing regimes.Taein Kong Byung Je Kwak Jonghyun Kim Jeong Hun Lee Sung Hyuk Park Ji Hoon Kim Young Hoon Moon Hyun Sik Yoon Taekyung Lee 2020Journal of Magnesium and Alloys2020,8,1:10
13IRG1 induced by heme oxygenase- 1/carbon monoxide inhibits LPS-mediated sepsis and pro-inflammatory cytokine production显示文摘Md Jamal Uddin Yeonsoo Joe Seul-Ki Kim Sun Oh Jeong Stefan W Ryter Hyun-Ock Pae Hun Taeg Chung 2016Cellular & Molecular Immunology2016,13,2:10
14Gastric leptomeningeal carcinomatosis: Multi-center retrospective analysis of 54 cases显示文摘AIM: To identify the clinical features and outcomes of infrequently reported leptomeningeal carcinomatosis (LMC) of gastric cancer.METHODS: We analyzed 54 cases of cytologically confirmed gastric LMC at four institutions from 1994 to 2007.RESULTS: The male-to-female ratio was 32:22, and the patients ranged in age from 28 to 78 years (median,48.5 years). The majority of patients had advanced disease at initial diagnosis of gastric cancer. The clini-cal or pathologic tumor, node and metastasis stage ofthe primary gastric cancer wasin 38 patients (70%).The median interval from diagnosis of the primarymalignancy to the diagnosis of LMC was 6.3 mo, rang-ing between 0 and 73.1 mo. Of the initial endoscopic f indings for the 45 available patients, 23 (51%) of the patients were Bormann typeand 15 (33%) patientswere Bormann type. Pathologically, 94% of cases proved to be poorly differentiated adenocarcinomas. Signet ring cell component was also observed in 40% of patients. Headache (85%) and nausea/vomiting (58%) were the most common presenting symptoms of LMC. A gadolinium-enhanced magnetic resonance imaging was conducted in 51 patients. Leptomeningeal enhancement was noted in 45 cases (82%). Intrathecal (IT) chemotherapy was administered to 36 patients-primarily methotrexate alone (61%), but also in combi-nation with hydrocortisone/± Ara-C (39%). The median number of IT treatments was 7 (range, 1-18). Concomitant radiotherapy was administered to 18 patients, and concomitant chemotherapy to seven patients. Sev-enteen patients (46%) achieved cytological negative conversion. Median overall survival duration from the diagnosis of LMC was 6.7 wk (95% CI: 4.3-9.1 wk). In the univariate analysis of survival duration, hemoglobin, IT chemotherapy, and cytological negative conversion showed superior survival duration (P = 0.038, P = 0.010, and P = 0.002, respectively). However, in our multivariate analysis, only cytological negative conversion was predictive of relatively longer survival duration (3.6, 6.7 and 14.6 wk, P = 0.030, RR: 0.415, 95% CI: 0.188-0.918).CONCLUSION: Although these patients had a fatal clinical course, cytologic negative conversion by IT chemotherapy may improve survival.Sung Yong Oh Su-Jin Lee Jeeyun Lee Suee Lee Sung-Hyun Kim Hyuk-Chan Kwon Gyeong-Won Lee Jung Hun Kang In Gyu Hwang Joung-Soon Jang Ho Yeong Lim Young Suk Park Won Ki Kang Hyo-Jin Kim 2009World Journal of Gastroenterology2009,15,40:10
15Effect of focal laser photocoagulation in eyes with mild to moderate non-proliferative diabetic retinopathy显示文摘AIM:To report the effect of focal laser photocoagulation on both the severity of hard exudates(HEs) and the rate of disease progression in eyes with mild to moderate non-proliferative diabetic retinopathy(NPDR).METHODS: We retrospectively reviewed the medical records of 33 patients(60 eyes) who had been diagnosed with mild to moderate NPDR between January 2006 and December 2012.The patients were divided into 2 groups:Group A(38 eyes in 20 patients treated using focal laser photocoagulation) and Group B(treated without laser photocoagulation).We also reviewed the best corrected visual acuity measurements,and the fundus photographs taken at both baseline and follow-up visits. RESULTS: In Group A,HE severity grade had decreased significantly from baseline to the final visit(P <0.05),but this was not the case in Group B(P =0.662).The cumulative probabilities of retinopathy progression at 5y were 26% in Group A and 30% in Group B.KaplanMeier survival curves showed no significant difference between the groups with regard to retinopathy progression(P =0.805).CONCLUSION: Focal laser photocoagulation reduced the levels of HEs in eyes with mild to moderate NPDR.However,the treatment was not able to decelerate the progression of DR.Seong Hun Jeong Jung Il Han Sung Won Cho Dong Won Lee Chul Gu Kim Tae Gon Lee Jong Woo Kim 2016International Journal of Ophthalmology(English edition)2016,9,10:10
16Persistent organochlorine residues in sediments of Haihe River and Dagu Drainage River in Tianjin, China显示文摘Persistent organochlorine compounds were analyzed by means of GC-ECD in surface sediment samples from two selected rivers in Tianjin, Haihe River and Dagu Drainage River. A total of 16 surface sediment sites were selected along the both rivers. The frequency of detection of T-HCH and T-DDT in sediment samples both was up to 100%, which illustrated that the contamination of HCH and DDT was widespread in Haihe and Dagu Drainage Rivers. Results indicated that the concentrations of various pesticides in sediments from Haihe River were in the range of 3.30—75.96 ng/g dw for T-HCH and 1.57—211.57 ng/g dw for T-DDT. Compared with Haihe River, Dagu Drainage River was contaminated by HCHs and DDTs along the all locations and the values of T-HCH and T-DDT residues in sediments ranged from 2.30 to 124.61 ng/g dw and from 11.28 to 237.30 ng/g dw, respectively. The possible pollution sources were analyzed through monitoring results of organochlorine pesticides(OCPs) residues in sediments from the two rivers. The investigation also indicated that HCH was still used as pesticide in Tianjin partial area.DING Hui LI Xin-gang LIU Hun WANG Jun SHEN Wei-ran SUN Yi-chao SHAO Xiao-long 2005Journal of Environmental Sciences2005,17,5:9
17Retrospective analysis of extra-gastrointestinal stromal tumors显示文摘AIM:To investigate the clinicopathologic features of patients with extra-gastrointestinal stromal tumors(EGISTs)in South Korea.METHODS:A total of 51 patients with an EGIST were identified.The clinicopathologic features,including sex,age,location,tumor size,histology,mitotic rate,immunohistochemical features,genetic status and survival data,were analyzed.RESULTS:The median age was 55 years(range:29-80years),and male:female ratio was 1:1.04.The most common site was in the mesentery(n=15)followed by the retroperitoneum(n=13)and omentum(n=8).The median tumor size was 9.0 cm(range:2.6-30.0cm)and the median mitotic rate was 5.0/50HPF.(1/50-185/50).KIT was analyzed in 16,which revealed 10cases with wild-type KIT and 6 cases with an exon 11mutation.Among 51 patients,31 patients had undergone surgery,and 10 had unresectable disease and had taken palliative imatinib,which resulted in 22.7 mo of progression-free survival.Of the patients who had undergone surgery,18 did not take adjuvant imatinib,and 8 of these were categorized as'high risk'according to the risk criteria.However,the relapse-free survival was not different(P=0.157)between two groups.CONCLUSION:Because the biologic behaviors of GISTs differ according to the location of the tumor,a more stratified strategy is required for managing EGISTs including incorporation of molecular features.Jun Ho Yi Byeong-Bae Park Jung Hun Kang In Gyu Hwang Dong Bok Shin Sun Jin Sym Hee Kyung Ahn Soon Il Lee Do Hyoung Lim Keon Woo Park Young-Woong Won Sung Hee Lim Se Hoon Park 2015World Journal of Gastroenterology2015,21,6:9
18Dynamic recrystallization behavior and microstructural evolution of Mg alloy AZ31 through high-speed rolling显示文摘High-speed rolling(HSR) is known to improve the workability of Mg alloys significantly, which makes it possible to impose a large reduction in a single pass without fracture. In the present study, dynamic recrystallization(DRX) behavior and microstructural and textural variations of Mg alloy AZ31 during a HSR process were investigated by conducting rolling with different imposed reductions in the range of 20%–80% at a high rolling speed of 470 m/min and 400?C. High-strain-rate deformation during HSR suppresses dislocation slips but promotes twinning, which results in the formation of numerous twins of several types, i.e., {10–12} extension twins, {10–11} and {10–13} contraction twins,and {10–11}–{10–12} double twins. After twinning, high strain energy is accumulated in twin bands because their crystallographic orientations are favorable for basal slips, leading to subsequent DRX at the twin bands. Accordingly, twinning activation and twinning-induced DRX behavior play crucial roles in accommodating plastic deformation during HSR and in varying microstructure and texture of the highspeed-rolled(HSRed) sheets. Area fraction of fine DRXed grains formed at the twin bands increases with increasing rolling reduction, which is attributed to the combined effects of increased strain, strain rate,and deformation temperature and a decreased critical strain for DRX. Size, internal strain, and texture intensity of the DRXed grains are smaller than those of unDRXed grains. Therefore, as rolling reduction increases, average grain size, stored internal energy, microstructural inhomogeneity, and basal texture intensity of the HSRed sheets gradually decrease owing to an increase in the area fraction of the DRXed grains.Jeong Hun Lee Jong Un Lee Sang-Hoon Kim Seok Weon Song Chong Soo Lee Sung Hyuk Park 2018Journal of Materials Science & Technology2018,34,10:8
19LOV Domain-Containing Light-Dependent Protein in Arabidopsis F-Box Proteins: Degradation Modules显示文摘植物常常用光敏电阻器的几个集合调查包围环境。他们能在数量(=intensity ) 和光的质量(=wavelength ) 察觉到变化并且使用这个信息调整他们的生理的回答,生长,和发展模式。除了古典光敏电阻器,例如 phytochromes , cryptochromes ,和 phototropins , ZEITLUPE ( ZTL ),黄素绑定, KELCH 重复,F盒子 1 ( FKF1 ),并且 LOV KELCH 蛋白质 2 ( LKP2 )蛋白质最近作为蓝光的光敏电阻器被识别了为生理节奏的钟和 photoperiodic flowering 的规定是重要的。ZTL/FKF1/LKP2 蛋白质家庭拥有领域的唯一的联合:与领域一起的领域在蛋白质降级包含了的 blue-light-absorbing LOV (光,氧,或电压) 。这里,我们在我们 Arabidopsis ZTL/FKF1/LKP2 蛋白质的功能的理解总结最近的进展。我们总结他们的 LOV 领域的不同光化学的性质并且讨论 ZTL/FKF1/LKP2 蛋白质由控制 blue-light-dependent 蛋白质降级由调整生理节奏的钟和 photoperiodic flowering 的分子的机制。Shogo Ito Young Hun Song Takato Imaizumi 2012Molecular Plant2012,5,3:8
20Ischemic colitis during interferon-ribavirin therapy for chronic hepatitis C:A case report显示文摘Ischemic colitis is a rare complication of interferon administration.Only 9 cases in 6 reports have been described to-date.This report describes a case of ischemic colitis during pegylated interferon and ribavirin treatment for chronic hepatitis C,and includes a review of the relevant literature.A 48-year-old woman was treated with pegylated interferon-2a and ribavirin for chronic hepatitis C,genotype Ib.After 19 wk of treatment,the patient complained of severe afebrile abdominal pain with hematochezia.Vital signs were stable and serum white blood cell count was within the normal range.Abdominal computed tomography showed diffuse colonic wall thickening from the splenic flexure to the proximal sigmoid colon,which is the most vulnerable area for the development of ischemic colitis.Colonoscopy revealed an acute mucosal hyperemic change,with edema and ulcerations extending from the proximal descending colon to the sigmoid colon.Colonic mucosal biopsy revealed acute exudative colitis.Polymerase chain reaction and culture for Mycobacterium tuberculosis were negative and the cultures for cytomegalovirus,Salmonella and Shigella species were negative.After discontinuation of interferon and ribavirin therapy,abdominal pain and hematochezia subsided and,following colonoscopy showed improvement of the mucosal ulcerations.Ischemic colitis cases during interferon therapy in patients with chronic hepatitis C reported so far have all involved the descending colon.Ischemic colitis is a rarely encountered complication of interferon administration in patients with chronic hepatitis C and should be considered when a patient complains of abdominal pain and hematochezia.Su Jung Baik Tae Hun Kim Kwon Yoo Il Hwan Moon Min-Sun Cho 2012World Journal of Gastroenterology2012,18,31:8
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