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排序方式: 共有1058条查询结果,搜索用时 31 毫秒
51.
Tan Yi Han Teoh Siang Guan Muhammad Adnan Iqbal Rosenani A. Haque K. Sharmila Rajeswari Mohamed B. Khadeer Ahamed A. M. S. Abdul Majid 《Medicinal chemistry research》2014,23(5):2347-2359
Two ternary copper(II) complexes of dl-threonine and polypyridyl ligands with formula of [Cu(Thr)(Byp)Cl]·H2O (1) and [Cu(Thr)(Phen)H2O]Cl·2H2O (2) were synthesized. The complexes were characterized by spectral (NMR, FT-IR, and UV–Vis), CHN elemental analysis and have been structurally elucidated by X-ray crystallography. Both of the complexes formed slightly distorted square-pyramidal coordination geometry. The electronic absorption spectra of the complexes showed a very low intensity d–d electronic band in the range of 610–620 nm in Tris–HCl/NaCl (5:5 mM) pH 7.2 buffer solution. The DNA binding interaction with calf-thymus DNA (CT-DNA) was investigated by electronic absorption spectral titration and viscosity measurements. The results revealed that the phenanthroline complex (2) interact with CT-DNA through intercalation while bipyridyl complex (1) through the groove binding mode. The calculated intrinsic binding constant (K b) of (1) and (2) were 0.5 and 4.4 × 105 M?1, respectively. Both the complexes were found to promote efficient DNA cleavage activities at low concentration in the presence of H2O2. The results showed that (2) has the highest DNA binding and nuclease activity. Furthermore, both the complexes were tested against human colon cancer (HCT 116) and breast cancer (MCF-7) cell lines and showed a dose-dependent antiproliferation effect. 相似文献
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Interleukin-6 Inhibits Fas-Induced Apoptosis and Stress-Activated Protein Kinase Activation in Multiple Myeloma Cells 总被引:10,自引:20,他引:10
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Oon Hoe Teoh Tan Pih Lin Marieke Abrahamse-Berkeveld Antoinette Winokan Yap Seng Chong Fabian Yap Maya Marintcheva-Petrova Eline M. van der Beek Lynette P. Shek 《Nutrients》2022,14(3)
Lipids are essential for healthy infant growth and development. The structural complexity of lipids in human milk is not present in infant milk formula (IF). A concept IF was developed mimicking more closely the structure and composition of human milk fat globules. The current study evaluates whether a concept IF with large, milk phospholipid-coated lipid droplets (mode diameter 3 to 5 μm) is equivalent to standard IF with regard to growth adequacy and safety in healthy, term Asian infants. In this randomized, double-blind, controlled trial, infants were randomized after parents decided to introduce formula. Infants received a standard IF with (Control) or without the specific prebiotic mixture scGOS/lcFOS (9:1 ratio; Control w/o prebiotics), or a Concept IF with large, milk phospholipid-coated lipid droplets and the prebiotic mixture. A group of 67 breastfed infants served as a reference. As a priori defined, only those infants who were fully intervention formula-fed ≤28 days of age were included in the equivalence analysis (Control n = 29; Control w/o prebiotics n = 28; Concept n = 35, per-protocol population). Primary outcome was daily weight gain during the first four months of life, with the difference between the Concept and Control as the key comparison of interest. Additionally, adverse events, growth and tolerance parameters were evaluated. Equivalence of daily weight gain was demonstrated between the Concept and Control group after additional correction for ethnicity and birthweight (difference in estimated means of 0.1 g/d, 90%CI [−2.30, 2.47]; equivalence margin +/− 3 g/d). No clinically relevant group differences were observed in secondary growth outcomes, tolerance outcomes or number, severity or relatedness of adverse events. This study corroborates that an infant formula with large, milk phospholipid-coated lipid droplets supports adequate growth and is well tolerated and safe for use in healthy infants. 相似文献
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Tokyo Guidelines 2018: diagnostic criteria and severity grading of acute cholangitis (with videos) 下载免费PDF全文
Seiki Kiriyama Kazuto Kozaka Tadahiro Takada Steven M. Strasberg Henry A. Pitt Toshifumi Gabata Jiro Hata Kui‐Hin Liau Fumihiko Miura Akihiko Horiguchi Keng‐Hao Liu Cheng‐Hsi Su Keita Wada Palepu Jagannath Takao Itoi Dirk J. Gouma Yasuhisa Mori Shuntaro Mukai Mariano Eduardo Giménez Wayne Shih‐Wei Huang Myung‐Hwan Kim Kohji Okamoto Giulio Belli Christos Dervenis Angus C. W. Chan Wan Yee Lau Itaru Endo Harumi Gomi Masahiro Yoshida Toshihiko Mayumi Todd H. Baron Eduardo de Santibañes Anthony Yuen Bun Teoh Tsann‐Long Hwang Chen‐Guo Ker Miin‐Fu Chen Ho‐Seong Han Yoo‐Seok Yoon In‐Seok Choi Dong‐Sup Yoon Ryota Higuchi Seigo Kitano Masafumi Inomata Daniel J. Deziel Eduard Jonas Koichi Hirata Yoshinobu Sumiyama Kazuo Inui Masakazu Yamamoto 《Journal of hepato-biliary-pancreatic sciences》2018,25(1):17-30
Although the diagnostic and severity grading criteria on the 2013 Tokyo Guidelines (TG13) are used worldwide as the primary standard for management of acute cholangitis (AC), they need to be validated through implementation and assessment in actual clinical practice. Here, we conduct a systematic review of the literature to validate the TG13 diagnostic and severity grading criteria for AC and propose TG18 criteria. While there is little evidence evaluating the TG13 criteria, they were validated through a large‐scale case series study in Japan and Taiwan. Analyzing big data from this study confirmed that the diagnostic rate of AC based on the TG13 diagnostic criteria was higher than that based on the TG07 criteria, and that 30‐day mortality in patients with a higher severity based on the TG13 severity grading criteria was significantly higher. Furthermore, a comparison of patients treated with early or urgent biliary drainage versus patients not treated this way showed no difference in 30‐day mortality among patients with Grade I or Grade III AC, but significantly lower 30‐day mortality in patients with Grade II AC who were treated with early or urgent biliary drainage. This suggests that the TG13 severity grading criteria can be used to identify Grade II patients whose prognoses may be improved through biliary drainage. The TG13 severity grading criteria may therefore be useful as an indicator for biliary drainage as well as a predictive factor when assessing the patient's prognosis. The TG13 diagnostic and severity grading criteria for AC can provide results quickly, are minimally invasive for the patients, and are inexpensive. We recommend that the TG13 criteria be adopted in the TG18 guidelines and used as standard practice in the clinical setting. Free full articles and mobile app of TG18 are available at: http://www.jshbps.jp/modules/en/index.php?content_id=47 . Related clinical questions and references are also included. 相似文献
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Indications and techniques of biliary drainage for acute cholangitis in updated Tokyo Guidelines 2018 下载免费PDF全文
Shuntaro Mukai Takao Itoi Todd H. Baron Tadahiro Takada Steven M. Strasberg Henry A. Pitt Tomohiko Ukai Satoru Shikata Anthony Yuen Bun Teoh Myung‐Hwan Kim Seiki Kiriyama Yasuhisa Mori Fumihiko Miura Miin‐Fu Chen Wan Yee Lau Keita Wada Avinash Nivritti Supe Mariano Eduardo Giménez Masahiro Yoshida Toshihiko Mayumi Koichi Hirata Yoshinobu Sumiyama Kazuo Inui Masakazu Yamamoto 《Journal of hepato-biliary-pancreatic sciences》2017,24(10):537-549
The Tokyo Guidelines 2013 (TG13) include new topics in the biliary drainage section. From these topics, we describe the indications and new techniques of biliary drainage for acute cholangitis with videos. Recently, many novel studies and case series have been published across the world, thus TG13 need to be updated regarding the indications and selection of biliary drainage based on published data. Herein, we describe the latest updated TG13 on biliary drainage in acute cholangitis with meta‐analysis. The present study showed that endoscopic transpapillary biliary drainage regardless of the use of nasobiliary drainage or biliary stenting, should be selected as the first‐line therapy for acute cholangitis. In acute cholangitis, endoscopic sphincterotomy (EST) is not routinely required for biliary drainage alone because of the concern of post‐EST bleeding. In case of concomitant bile duct stones, stone removal following EST at a single session may be considered in patients with mild or moderate acute cholangitis except in patients under anticoagulant therapy or with coagulopathy. We recommend the removal of difficult stones at two sessions after drainage in patients with a large stone or multiple stones. In patients with potential coagulopathy, endoscopic papillary dilation can be a better technique than EST for stone removal. Presently, balloon enteroscopy‐assisted endoscopic retrograde cholangiopancreatography (BE‐ERCP) is used as the first‐line therapy for biliary drainage in patients with surgically altered anatomy where BE‐ERCP expertise is present. However, the technical success rate is not always high. Thus, several studies have revealed that endoscopic ultrasonography‐guided biliary drainage (EUS‐BD) can be one of the second‐line therapies in failed BE‐ERCP as an alternative to percutaneous transhepatic biliary drainage where EUS‐BD expertise is present. 相似文献
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Vikas Madan Zeya Cao Weoi Woon Teoh Pushkar Dakle Lin Han Pavithra Shyamsunder Maya Jeitany Siqin Zhou Jia Li Hazimah Binte Mohd Nordin Jizhong Shi Shuizhou Yu Henry Yang Md Zakir Hossain Wee Joo Chng H. Phillip Koeffler 《Haematologica》2022,107(3):680
Recurrent loss-of-function mutations of spliceosome gene, ZRSR2, occur in myelodysplastic syndromes (MDS). Mutation/loss of ZRSR2 in human myeloid cells primarily causes impaired splicing of the U12-type introns. In order to further investigate the role of this splice factor in RNA splicing and hematopoietic development, we generated mice lacking ZRSR2. Unexpectedly, Zrsr2-deficient mice developed normal hematopoiesis with no abnormalities in myeloid differentiation evident in either young or ≥1-year old knockout mice. Repopulation ability of Zrsr2-deficient hematopoietic stem cells was also unaffected in both competitive and non-competitive reconstitution assays. Myeloid progenitors lacking ZRSR2 exhibited mis-splicing of U12-type introns, however, this phenotype was moderate compared to the ZRSR2-deficient human cells. Our investigations revealed that a closely related homolog, Zrsr1, expressed in the murine hematopoietic cells, but not in human cells contributes to splicing of U12-type introns. Depletion of Zrsr1 in Zrsr2 KO myeloid cells exacerbated retention of the U12-type introns, thus highlighting a collective role of ZRSR1 and ZRSR2 in murine U12-spliceosome. We also demonstrate that aberrant retention of U12-type introns of MAPK9 and MAPK14 leads to their reduced protein expression. Overall, our findings highlight that both ZRSR1 and ZRSR2 are functional components of the murine U12-spliceosome, and depletion of both proteins is required to accurately model ZRSR2-mutant MDS in mice. 相似文献
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Vitamin D deficiency may be involved in the pathogenesis of several inflammatory conditions. This study aimed to determine the status of vitamin D in the rheumatology patients who were diagnosed with different rheumatic, inflammatory and non-inflammatory diseases. In this cross-sectional observational study, we reviewed the levels of serum vitamin D in patients who attended the general rheumatology clinics for the first time between May 2012 and October 2012. A total of 61 patients were included in this study. Twenty-five patients (41 %) had vitamin D insufficiency and two patients (3.3 %) were vitamin D deficient. Sixteen patients had an inflammatory condition and vitamin D was low in five patients (31 %). Among the 45 patients who had a non-inflammatory rheumatic condition, 20 patients (44 %) had low vitamin D. There was no significant statistical difference (P = 0.3) in the incidence of low vitamin D between the two groups. We found no significant correlation either between CRP and vitamin D (r = ?0.02 (95 % confidence interval ?0.28 to 0.23), P = 0.8). In this limited study, which was undertaken in the summer months, we concluded that there was no significant difference in vitamin D status between patients with inflammatory and non-inflammatory rheumatic conditions. 相似文献
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