26
|
Yu E, Sim C, Park D, Koh Y, Heo J, Choe S, Kim J, Koong M, Kang I, Yoon T, Kim Y. Relationship between heavy metal concentration and number of spontaneous abortion experiences in Korean women: a retrospective study of the 6th Korean national health and nutrition examination survey. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
27
|
Han E, Koh Y, Heo J, Kim M, Lee H, Park H, Kim J, Lee W. Efficacy of granulocyte colony stimulation factor(G-CSF) administration to improve IVF outcomes: a meta-analysis. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.1037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
28
|
Choe S, Kim Y, Kang I, Sim C, Heo J, Koh Y, Koong M, Yoon T, Park D, Lee Y, Kim J, Kim M. Risk factors for premature or early menopause: a comparative study between United States and South Korean women. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
29
|
Ryu J, Yang H, Kim A, Kim K, Heo J. UNDERSTANDING PICKLEBALL AS A NEW LEISURE PURSUIT IN OLDER ADULTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
30
|
Heo J, Tolea M, Galvin J. A NEW NON-INVASIVE AND BRIEF CVD RISK SCORE SYSTEM TO PREDICT COGNITIVE DECLINE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
31
|
Heo J, Oh Y, Noh O, Chun M, Park J, Cho S. EP-1268: Tumor response according to NK cell change during preoperative chemoradiotherapy in rectal cancer. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31703-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
32
|
Park N, Heo J, Song S, Jo I, Lee K, Ha NC. Crystal structure of Streptomyces coelicolor RraAS2, an unusual member of the RNase E inhibitor RraA protein family. J Microbiol 2017; 55:388-395. [PMID: 28455590 DOI: 10.1007/s12275-017-7053-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/04/2017] [Accepted: 04/06/2017] [Indexed: 10/19/2022]
Abstract
Bacterial ribonuclease E (RNase E) plays a crucial role in the processing and decay of RNAs. A small protein named RraA negatively regulates the activity of RNase E via protein-protein interaction in various bacteria. Recently, RraAS1 and RraAS2, which are functional homologs of RraA from Escherichia coli, were identified in the Gram-positive species Streptomyces coelicolor. RraAS1 and RraAS2 inhibit RNase ES ribonuclease activity in S. coelicolor. RraAS1 and RraAS2 have a C-terminal extension region unlike typical bacterial RraA proteins. In this study, we present the crystal structure of RraAS2, exhibiting a hexamer arranged in a dimer of trimers, consistent with size exclusion chromatographic results. Importantly, the C-terminal extension region formed a long α-helix at the junction of the neighboring subunit, which is similar to the trimeric RraA orthologs from Saccharomyces cerevisiae. Truncation of the C-terminal extension region resulted in loss of RNase ES inhibition, demonstrating its crucial role. Our findings present the first bacterial RraA that has a hexameric assembly with a C-terminal extension α-helical region, which plays an essential role in the regulation of RNase ES activity in S. coelicolor.
Collapse
|
33
|
Johnstone EV, Bailey DJ, Stennett MC, Heo J, Hyatt NC. On the existence of AgM 9(VO 4) 6I (M = Ba, Pb). RSC Adv 2017. [DOI: 10.1039/c7ra09313f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Attempts to synthesize “AgM9(VO4)6I” (M = Ba, Pb), potential waste form materials for radioiodine, were unsuccessful, demonstrating that AgI incorporation into an iodine-deficient apatite phase is not feasible under the reported conditions.
Collapse
|
34
|
Seo S, Kim D, Song W, Heo J, Joo M, Lim Y, Yeom JH, Lee K. RraAS1 inhibits the ribonucleolytic activity of RNase ES by interacting with its catalytic domain in Streptomyces coelicolor. J Microbiol 2016; 55:37-43. [PMID: 28035598 DOI: 10.1007/s12275-017-6518-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/15/2016] [Accepted: 12/20/2016] [Indexed: 11/26/2022]
Abstract
RraA is a protein inhibitor of RNase E, which degrades and processes numerous RNAs in Escherichia coli. Streptomyces coelicolor also contains homologs of RNase E and RraA, RNase ES and RraAS1/RraAS2, respectively. Here, we report that, unlike other RraA homologs, RraAS1 directly interacts with the catalytic domain of RNase ES to exert its inhibitory effect. We further show that rraAS1 gene deletion in S. coelicolor results in a higher growth rate and increased production of actinorhodin and undecylprodigiosin, compared with the wild-type strain, suggesting that RraAS1-mediated regulation of RNase ES activity contributes to modulating the cellular physiology of S. coelicolor.
Collapse
|
35
|
Choi B, Yang J, Ryu C, Shin SJ, Kim Y, Heo J, Cho S, Choi NJ. 1566 Effect of dietary polyphenol, protected amino acid, and crude protein levels on in vitro rumen fermentation and crude protein digestibility. J Anim Sci 2016. [DOI: 10.2527/jam2016-1566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
36
|
Yang J, Ryu C, Shin SJ, Choi B, Kim Y, Park M, Heo J, Cho S, Choi NJ. 1618 Effect of different microbial inoculants on fermentation characteristics of Miscanthus silage and their rumen fermentation and digestibility. J Anim Sci 2016. [DOI: 10.2527/jam2016-1618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
37
|
Heo J, Kim D, Joo M, Lee B, Seo S, Lee J, Song S, Yeom JH, Ha NC, Lee K. RraAS2 requires both scaffold domains of RNase ES for high-affinity binding and inhibitory action on the ribonucleolytic activity. J Microbiol 2016; 54:660-6. [PMID: 27687228 DOI: 10.1007/s12275-016-6417-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 09/07/2016] [Accepted: 09/07/2016] [Indexed: 10/20/2022]
Abstract
RraA is a protein inhibitor of RNase E (Rne), which catalyzes the endoribonucleolytic cleavage of a large proportion of RNAs in Escherichia coli. The antibiotic-producing bacterium Streptomyces coelicolor also contains homologs of RNase E and RraA, designated as RNase ES (Rns), RraAS1, and RraAS2, respectively. Here, we report that RraAS2 requires both scaffold domains of RNase ES for high-affinity binding and inhibitory action on the ribonucleolytic activity. Analyses of the steady-state level of RNase E substrates indicated that coexpression of RraAS2 in E. coli cells overproducing Rns effectively inhibits the ribonucleolytic activity of full-length RNase ES, but its inhibitory effects were moderate or undetectable on other truncated forms of Rns, in which the N- or/and C-terminal scaffold domain was deleted. In addition, RraAS2 more efficiently inhibited the in vitro ribonucleolytic activity of RNase ES than that of a truncated form containing the catalytic domain only. Coimmunoprecipitation and in vivo cross-linking experiments further showed necessity of both scaffold domains of RNase ES for high-affinity binding of RraAS2 to the enzyme, resulting in decreased RNA-binding capacity of RNase ES. Our results indicate that RraAS2 is a protein inhibitor of RNase ES and provide clues to how this inhibitor affects the ribonucleolytic activity of RNase ES.
Collapse
|
38
|
Heo J, Hwang K, Moon Y, Kim J, Lee J, Tak T, Choi J. Sub-acute oral toxicity study of soybean [Glycine max (L.) Merr.] whole plant extract in rats. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
39
|
Ahn SH, Lim YS, Lee KS, Paik SW, Lee YJ, Jeong SH, Kim JH, Yoon SK, Yim HJ, Tak WY, Han SY, Yang JC, Mo H, Mathias A, Han L, Knox SJ, Brainard DM, Kim YJ, Byun KS, Kim YS, Heo J, Han KH. A phase 3b study of sofosbuvir plus ribavirin in treatment-naive and treatment-experienced Korean patients chronically infected with genotype 2 hepatitis C virus. J Viral Hepat 2016; 23:358-65. [PMID: 26864153 DOI: 10.1111/jvh.12499] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 11/05/2015] [Indexed: 01/04/2023]
Abstract
In Korea, patients with chronic hepatitis C virus (HCV) infection are typically treated with pegylated interferon-alpha plus ribavirin, but interferons are contraindicated in many patients and are often poorly tolerated, particularly by the elderly and those with advanced liver disease. No interferon-free treatment regimens are approved in Korea. Sofosbuvir is an oral nucleotide analog inhibitor of the HCV nonstructural 5B RNA polymerase. It is approved in the USA, European Union and Japan for treating a number of HCV genotypes, including genotype 2. Genotype 2 has a seroprevalence of 38-46% in Korea. This single-arm, phase 3b study (NCT02021643) examined the efficacy and safety of sofosbuvir plus ribavirin (12-week duration) in chronic genotype 2 HCV-infected treatment-naive and treatment-experienced Korean patients with and without cirrhosis. The proportion of patients with sustained virologic response 12 weeks after treatment discontinuation (SVR12) was 97% (125/129), with 96% (101/105) of treatment-naive and 100% (24/24) of treatment-experienced patients achieving SVR12. Two patients experienced virologic failure (n = 1, on-treatment failure; n = 1, relapse). No patient discontinued study treatment due to an adverse event (AE). The most common treatment-emergent AEs were headache (18%, 23/129) and pruritus (15%, 19/129). Few patients had grade 3 AEs (5%, 6/129) or grade 3 laboratory abnormalities (12%, 15/129). No grade 4 AE was reported. These data suggest that 12 weeks of treatment with the all-oral, interferon-free regimen of sofosbuvir plus ribavirin is effective and well tolerated in Korean patients with chronic genotype 2 HCV infection.
Collapse
|
40
|
Heo J, Noh O, Lee H, Chun M, Oh Y, Kim J. EP-1259: Clinical significance of lymphocyte count before chemoradiotherapy in resected pancreatic cancer. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32509-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
41
|
Heo J, Chun M, Oh Y, Noh O, Kim J. EP-1462: Effects of education using Youtube about radiotherapy process for cancer patients. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32712-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
42
|
Kim W, Lee S, Lee E, Namkoong K, Choe K, Song J, Cheong H, Jeong H, Heo J. Incidence of narcolepsy before and after the pandemic influenza a (H1N1) vaccination in the Korean military. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.1543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
43
|
Zeuzem S, Flisiak R, Vierling JM, Mazur W, Mazzella G, Thongsawat S, Abdurakhmanov D, Van Kính N, Calistru P, Heo J, Stanciu C, Gould M, Makara M, Hsu SJ, Buggisch P, Samuel D, Mutimer D, Nault B, Merz M, Bao W, Griffel LH, Brass C, Naoumov NV. Randomised clinical trial: alisporivir combined with peginterferon and ribavirin in treatment-naïve patients with chronic HCV genotype 1 infection (ESSENTIAL II). Aliment Pharmacol Ther 2015; 42:829-44. [PMID: 26238707 DOI: 10.1111/apt.13342] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 03/29/2015] [Accepted: 07/08/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND Alisporivir (ALV) is an oral, host-targeting agent with pangenotypic anti-hepatitis C virus (HCV) activity and a high barrier to resistance. AIM To evaluate efficacy and safety of ALV plus peginterferon-α2a and ribavirin (PR) in treatment-naïve patients with chronic HCV genotype 1 infection. METHODS Double-blind, randomised, placebo-controlled, Phase 3 study evaluating ALV 600 mg once daily [response-guided therapy (RGT) for 24 or 48 weeks or 48 weeks fixed duration] or ALV 400 mg twice daily RGT with PR, compared to PR alone. Following a Food and Drug Administration partial clinical hold, ALV/placebo was discontinued and patients completed treatment with PR only. At that time, 87% of patients had received ≥12 weeks and 20% had received ≥24 weeks of ALV/PR triple therapy. RESULTS A total of 1081 patients were randomised (12% cirrhosis, 55% CT/TT IL28B). Addition of ALV to PR improved virological response in a dose-dependent fashion. Overall, sustained virological response (SVR12; primary endpoint) was 69% in all ALV groups vs. 53% in PR control. Highest SVR12 (90%) was achieved in patients treated with ALV 400 mg twice daily and PR for >24 weeks. Seven cases of pancreatitis were reported, with similar frequency between ALV/PR and PR control groups (0.6% vs. 0.8% respectively). Adverse events seen more frequently with ALV/PR than with PR alone were anaemia, thrombocytopenia, hyperbilirubinaemia and hypertension. CONCLUSIONS Alisporivir, especially the 400 mg twice daily regimen, increased efficacy of PR therapy in treatment-naïve patients with HCV genotype 1 infection. The mechanism of action and pangenotypic activity suggest that alisporivir could be useful in interferon-free combination regimens.
Collapse
|
44
|
Cho B, Kim J, Kim B, Tak T, Heo J. Cytotoxic effect of Methylisothiazolinone humidifier disinfectants in Raw 264.7 Cells. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
45
|
Heo J, Kim H, Chun M, Oh Y, Noh O, Cho O. EP-1275: Treatment compliance in elderly patient with advanced cervical cancer during concurrent chemoradiothrapy. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41267-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
46
|
Lim K, Jing K, Shin S, Jeong S, Kim S, Heo J, Kweon G, Park S, Park J. 772: Docosahexaenoic acid may indirectly increase proteasome activity through reactive oxygen species in human cervical cancer HeLa cells. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50677-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
47
|
Kwon YH, Heo J, Lee HS, Cho CM, Jeon SW. Failure of Helicobacter pylori eradication and age are independent risk factors for recurrent neoplasia after endoscopic resection of early gastric cancer in 283 patients. Aliment Pharmacol Ther 2014; 39:609-18. [PMID: 24461252 DOI: 10.1111/apt.12633] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 12/19/2013] [Accepted: 01/04/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND Whether the incidence of metachronous gastric dysplasia and cancer could be decreased by eradication of Helicobacter pylori after endoscopic submucosal dissection (ESD) for early gastric cancer (EGC). AIM To compare the incidence of metachronous gastric lesion in the eradicated group and the persistent group. Second end point is to evaluate the risk factors for metachronous gastric lesions after ESD for EGC. METHODS In a single centre, between May 2007 and May 2010, the patients who had evidence of H. pylori infection at the time of ESD for EGC were included, and the follow-up data were analysed retrospectively. RESULTS We enrolled 283 patients who have shown H. pylori infection at the time of ESD for EGC. Successful eradication was achieved for 214 patients (75.6%) (Eradicated group), and 69 patients (24.4%) showed persistent H. pylori infection (Persistent group). Metachronous gastric lesions developed in 13 (18.8%) in the persistent group and 18 (8.4%) in the eradicated group (P = 0.016). In the ≥60-year-old group, the cumulative incidence of metachronous gastric cancer showed a significant increase (P = 0.012). Cumulative hazard ratio of subsequent gastric metachronous lesions differed between the eradication group and the persistent infection group (OR = 2.322, 95% CI = 1.136-4.744, P = 0.021), and ≥60 age at the time of endoscopic resection (OR = 2.803, 95% CI = 1.207-6.509, P = 0.016). CONCLUSIONS Both persistent H. pylori infection and old age (≥60) are independent risk factors for the increased incidence of metachronous gastric cancer.
Collapse
|
48
|
Heo J, Noh O, Chun M, Oh Y, Kim M, Park H. EP-1255: Predictive factors for pathologic complete response after preoperative chemoradiotherapy in rectal cancer. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31373-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
49
|
Bhardwaj A, Hreibi A, Liu C, Heo J, Blondy JM, Gérôme F. High temperature stable PbS quantum dots. OPTICS EXPRESS 2013; 21:24922-24928. [PMID: 24150335 DOI: 10.1364/oe.21.024922] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
For the fabrication of nanoparticle containing optical fibers by melt and draw technique, nanoparticle stability at high temperatures is a requirement. We report the synthesis of quantum dots at temperatures as high as 1000 °C, compatible with fiber drawing, stabilized for the first time by a prior low temperature heating step. It is observed that quantum dots formed by this two step heating leads to a better emission stability at high powers associated with a reversible phenomenon, making these nanomaterials suitable for further technological applications.
Collapse
|
50
|
Radu MD, Raber L, Kalesan B, Muramatsu T, Kelbaek H, Heo J, Jorgensen E, Helqvist S, Farooq V, Brugaletta S, Garcia-Garcia HM, Juni P, Saunamaki K, Windecker S, Serruys PW. Coronary evaginations are associated with positive vessel remodelling and are nearly absent following implantation of newer-generation drug-eluting stents: an optical coherence tomography and intravascular ultrasound study. Eur Heart J 2013; 35:795-807. [DOI: 10.1093/eurheartj/eht344] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|