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Yoon MK, Kim BY, Lee JY, Ha JH, Kim SA, Lee DH, Lee MS, Lee MK, Choi JS, Cho JH, Kim JH, Kim S, Song J, Park SG, Park BC, Bae KH, Choi SU, Chi SW. Cytoplasmic pro-apoptotic function of the tumor suppressor p73 is mediated through a modified mode of recognition of the anti-apoptotic regulator Bcl-X L. J Biol Chem 2018; 293:19546-19558. [PMID: 30429221 DOI: 10.1074/jbc.ra118.003061] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 10/26/2018] [Indexed: 12/15/2022] Open
Abstract
In response to genotoxic stress, the tumor suppressor protein p73 induces apoptosis and cell cycle arrest. Despite extensive studies on p73-mediated apoptosis, little is known about the cytoplasmic apoptotic function of p73. Here, using H1299 lung cancer cells and diverse biochemical approaches, including colony formation, DNA fragmentation, GST pulldown, and apoptosis assays along with NMR spectroscopy, we show that p73 induces transcription-independent apoptosis via its transactivation domain (TAD) through a mitochondrial pathway and that this apoptosis is mediated by the interaction between p73-TAD and the anti-apoptotic protein B-cell lymphoma-extra large (Bcl-XL or BCL2L1). This binding disrupted an interaction between Bcl-XL and the pro-apoptotic protein BH3-interacting domain death agonist (Bid). In particular, we found that a 16-mer p73-TAD peptide motif (p73-TAD16) mediates transcription-independent apoptosis, accompanied by cytochrome c release from the mitochondria, by interacting with Bcl-XL Interestingly, the structure of the Bcl-XL-p73-TAD16 peptide complex revealed a novel mechanism of Bcl-XL recognition by p73-TAD. We observed that the α-helical p73-TAD16 peptide binds to a noncanonical site in Bcl-XL, comprising the BH1, BH2, and BH3 domains in an orientation opposite to those of pro-apoptotic BH3 peptides. Taken together, our results indicate that the cytoplasmic apoptotic function of p73 is mediated through a noncanonical mode of Bcl-XL recognition. This finding sheds light on a critical transcription-independent, p73-mediated mechanism for apoptosis induction, which has potential implications for anticancer therapy.
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Abbas N, Lu X, Badshah MA, In JB, Heo WI, Park KY, Lee MK, Kim CH, Kang P, Chang WJ, Kim SM, Seo SJ. Development of a Protein Microarray Chip with Enhanced Fluorescence for Identification of Semen and Vaginal Fluid. SENSORS 2018; 18:s18113874. [PMID: 30423842 PMCID: PMC6263525 DOI: 10.3390/s18113874] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/03/2018] [Accepted: 11/09/2018] [Indexed: 01/16/2023]
Abstract
The detection of body fluids has been used to identify a suspect and build a criminal case. As the amount of evidence collected at a crime site is limited, a multiplex identification system for body fluids using a small amount of sample is required. In this study, we proposed a multiplex detection platform using an Ag vertical nanorod metal enhanced fluorescence (MEF) substrate for semen and vaginal fluid (VF), which are important evidence in cases of sexual crime. The Ag nanorod MEF substrate with a length of 500 nm was fabricated by glancing angle deposition, and amino functionalization was conducted to improve binding ability. The effect of incubation time was analyzed, and an incubation time of 60 min was selected, at which the fluorescence signal was saturated. To assess the performance of the developed identification chip, the identification of semen and VF was carried out. The developed sensor could selectively identify semen and VF without any cross-reactivity. The limit of detection of the fabricated microarray chip was 10 times better than the commercially available rapid stain identification (RSID) Semen kit.
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Choi SH, Cho EB, Chung JW, Lee MK. Changes in the early mortality of adult patients with carbapenem-resistant Acinetobacter baumannii bacteremia during 11 years at an academic medical center. J Infect Chemother 2018; 25:6-11. [PMID: 30342838 DOI: 10.1016/j.jiac.2018.09.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/13/2018] [Accepted: 09/23/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND In the past decade, carbapenem-resistant Acinetobacter baumannii (CRAB) has emerged as a major pathogen of serious infections in critically ill adult patients. Despite very limited antimicrobial options, clinicians have sought to reduce the mortality of patients with serious CRAB infections. To determine whether these long-term efforts effectively lessened the mortality of such patients, we investigated changes in the early mortality of adult patients with CRAB bacteremia and related clinical factors. METHODS We reviewed clinical data from 111 adult patients with monomicrobial CRAB bacteremia admitted to an academic medical center between 2006 and 2016. RESULTS The 14-day mortality rate from 2013 to 2016 was lower than that from 2009 to 2012 (43.4% vs. 71.1%, p = 0.01). When the clinical characteristics of adult patients with CRAB bacteremia from 2013 to 2016 were compared to those of the patients from 2009 to 2012, chronic lung disease (6.7% vs. 24.4%, p = 0.01), a recent history of mechanical ventilation (38.3% vs. 57.8%, p = 0.048), and pneumonia (48.3% vs. 68.9%, p = 0.04) were less frequent in 2013-2016, while neurological disease (43.3% vs. 22.2%, p = 0.02), central venous catheter infection (20.0% vs. 6.7%, p = 0.05), and early appropriate antimicrobial therapy (46.7% vs. 24.4%, p = 0.01) were more frequent. CONCLUSION The 14-day mortality rate of adult patients with CRAB bacteremia was reduced during 2013-2016. This decrease was associated with early appropriate antimicrobial therapy and a lower proportion of patients with bacteremic pneumonia, which seemed to result from improved hospital infection control during that time period.
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Chae H, Kwak DK, Lee MK, Chi SW, Kim KB. Correction: Solid-state nanopore analysis on conformation change of p53TAD-MDM2 fusion protein induced by protein-protein interaction. NANOSCALE 2018; 10:18423. [PMID: 30256376 DOI: 10.1039/c8nr90204f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Correction for 'Solid-state nanopore analysis on conformation change of p53TAD-MDM2 fusion protein induced by protein-protein interaction' by Hongsik Chae et al., Nanoscale, 2018, DOI: 10.1039/c8nr06423g.
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Chae H, Kwak DK, Lee MK, Chi SW, Kim KB. Solid-state nanopore analysis on conformation change of p53TAD-MDM2 fusion protein induced by protein-protein interaction. NANOSCALE 2018; 10:17227-17235. [PMID: 30191243 DOI: 10.1039/c8nr06423g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Although protein-protein interactions (PPIs) are emerging therapeutic targets for human diseases, development of high-throughput screening (HTS) technologies against PPI targets remains challenging. In this study, we propose a protein complex structure to effectively detect conformational changes of protein resulting from PPI using solid-state nanopore for a novel, widely-applicable drug screening method against various PPI targets. To effectively detect conformational changes resulting from PPI, we designed a fusion protein MLP (MDM2-linker-p53TAD), where p53TAD and MDM2 are connected by a 16 amino acid linker. The globular conformation of MLP exhibited a single-peak translocation event, whereas the dumbbell-like conformation of nutlin-3-bound MLP revealed as a double-peak signal. The proportion of double-peak to single-peak signals increased from 9.3% to 23.0% as nutlin-3 concentration increased. The translocation kinetics of the two different MLP conformations with varied applied voltage were analyzed. Further, the fractional current of the intra-peak of the double-peak signal was analyzed, probing the structure of our designed protein complex. This approach of nanopore sensing may be extendedly employed in screening of PPI inhibitors and protein conformation studies.
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Lee J, Park EB, Min J, Sung SE, Jang Y, Shin JS, Chun D, Kim KH, Hwang J, Lee MK, Go YY, Kwon D, Kim M, Kang SJ, Choi BS. Systematic editing of synthetic RIG-I ligands to produce effective antiviral and anti-tumor RNA immunotherapies. Nucleic Acids Res 2018; 46:10533. [PMID: 30202915 PMCID: PMC6212841 DOI: 10.1093/nar/gky819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Kweon OJ, Lim YK, Kim HR, Kim TH, Lee MK. Fecal Respiratory Viruses in Acute Viral Respiratory Infection and Nasopharyngeal Diarrheal Viruses in Acute Viral Gastroenteritis: Clinical Impact of Ectopic Viruses Is Questionable. J Microbiol Biotechnol 2018; 28:465-472. [PMID: 29212291 DOI: 10.4014/jmb.1707.07058] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Our aim was to determine the detection rate of respiratory viruses (RVs) in feces of patients with acute viral respiratory infection (AVRI) and the detection rate of diarrheal viruses (DVs) in nasopharyngeal samples from patients with acute viral gastroenteritis. The relationships between the presence of fecal RVs or nasopharyngeal DVs and their impacts on the clinical severity were also investigated. A total of 144 fecal specimens were collected from AVRI patients and 95 nasopharyngeal specimens were collected from acute viral gastroenteritis patients. Clinical characteristics and laboratory profiles were compared between subgroups on the basis of the presence or absence of virus in the specimens. The detection rate of RVs in feces was 17.4% (25/144), whereas the detection rate for viruses identical to the respiratory pathogen was 10.4% (identical group, 15/144). Within the identical group, adenovirus (86.7%, 13/15) was most commonly found. Patients in the identical group showed statistically higher values for C-reactive protein, mean age, increased frequency of vomiting, and decreased frequency of chest film involvement and cough (p < 0.05). The detection rate of nasopharyngeal DVs among acute viral gastroenteritis patients was 19.0% (18/95), and in the identical group it was 15.8% (15/95). Norovirus group II and enteric adenovirus were the major pathogens detected in the identical group. There were no significant differences in clinical characteristics and laboratory profiles between the subgroups. In conclusion, the major pathogens of fecal RV and nasopharyngeal DV were adenovirus and norovirus group II, respectively. However, their relationship with the clinical symptoms or disease severity is unclear.
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Heo WI, Park KY, Lee MK, Moon NJ, Seo SJ. TSLP Polymorphisms in Atopic Dermatitis and Atopic March in Koreans. Ann Dermatol 2018; 30:529-535. [PMID: 33911474 PMCID: PMC7992469 DOI: 10.5021/ad.2018.30.5.529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 05/02/2018] [Accepted: 05/08/2018] [Indexed: 01/11/2023] Open
Abstract
Background Atopic march (AM) is the progression from atopic dermatitis (AD) to allergic rhinitis and asthma. The development of AD is as high as 20% in children worldwide and continues to increase. AD seems to be caused by both genetic and environmental factors. Recently, polymorphisms of the thymic stromal lymphopoietin (TSLP) gene associated with allergic disorders were reported in ethnic groups from various countries. Objective Identification of TSLP polymorphisms in Koreans with AD or AM. Methods Whole-exome sequencing was performed in 20 AD and 20 AM patients. Results Nine single nucleotide polymorphisms (SNPs) of TSLP were detected (rs191607411, rs3806933, rs2289276, rs2289277, rs2289278, rs139817258, rs11466749, rs11466750, rs10073816). These SNPs have been correlated with susceptibility to allergic diseases in ethnic groups from China, Japan, Turkey, and Costa Rica in previous studies. Remarkably, one of 20 patients in the AD group lacked all SNPs, compared to six of 20 patients in the AM group. Odds ratios showed that Korean patients without the nine TSLP variants had an 8.14 times higher risk of moving from AD to AM. Two haplotype blocks were validated in 60 AD and 59 AM patients using Sanger sequencing. The haplotype blocks (rs3806933 and rs2289276) and (rs11466749 and rs11466750) were in high linkage disequilibrium, respectively (D′=0.97, D′=1). Conclusion The increase of major allele frequency of respective nine TSLP variants may enhance the risk of AM. These data will contribute to improved genetic surveillance system in the early diagnosis technology of allergic disease.
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Kumar D, Kuo CN, Astuti F, Shang T, Lee MK, Lue CS, Watanabe I, Barker JAT, Shiroka T, Chang LJ. Nodeless superconductivity in the cage-type superconductor Sc 5Ru 6Sn 18 with preserved time-reversal symmetry. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:315803. [PMID: 29947614 DOI: 10.1088/1361-648x/aacf65] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report the single-crystal synthesis and detailed investigations of the cage-type superconductor Sc5Ru6Sn18, using powder x-ray diffraction (XRD), magnetization, specific-heat and muon-spin relaxation (µSR) measurements. Sc5Ru6Sn18 crystallizes in a tetragonal structure (space group I41/acd) with lattice parameters a = 1.387(3) nm and c = 2.641(5) nm. Both DC and AC magnetization measurements prove the type-II superconductivity in Sc5Ru6Sn18 with T c ≈ 3.5(1) K, a lower critical field [Formula: see text] = 157(9) Oe and an upper critical field, [Formula: see text] = 26(1) kOe. The zero-field electronic specific-heat data are well fitted using a single-gap BCS model, with [Formula: see text] = 0.64(1) meV. The Sommerfeld constant γ varies linearly with the applied magnetic field, indicating s-wave superconductivity in Sc5Ru6Sn18. Specific-heat and transverse-field (TF) µSR measurements reveal that Sc5Ru6Sn18 is a superconductor with strong electron-phonon coupling, with TF-µSR also suggesting a single-gap s-wave character of the superconductivity. Furthermore, zero-field µSR measurements do not detect spontaneous magnetic fields below T c, hence implying that time-reversal symmetry is preserved in Sc5Ru6Sn18.
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Choi RY, Lee HI, Ham JR, Yee ST, Kang KY, Lee MK. Heshouwu (Polygonum multiflorum Thunb.) ethanol extract suppresses pre-adipocytes differentiation in 3T3-L1 cells and adiposity in obese mice. Biomed Pharmacother 2018; 106:355-362. [PMID: 29966981 DOI: 10.1016/j.biopha.2018.06.140] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 06/05/2018] [Accepted: 06/25/2018] [Indexed: 02/07/2023] Open
Abstract
This study investigated whether Heshouwu (Polygonum multiflorum Thunb.) root ethanol extract (PME) has anti-obesity activity using 3T3-L1 cells and high-fat diet (HFD)-induced obese mice. Treatment with PME (5 and 10 μg/mL) dose-dependently suppressed 3T3-L1 pre-adipocyte differentiation to adipocytes and cellular triglyceride contents. In addition, PME inhibited mRNA and protein expression of adipogenic transcription factors such as CCAAT/enhancer-binding protein α (C/EBPα) and peroxisome proliferator-activated receptor γ (PPARγ), which led to down-regulation of fatty acid synthase gene expression. After feeding mice PME (0.05%) with HFD for 12 weeks, their visceral fat mass, size and body weight were significantly reduced compared with the HFD group. Furthermore, PME supplementation significantly up-regulated the PPARα, CPT1, CPT2, UCP1 and HSL mRNA levels compared with the HFD group, whereas it down-regulated expression of the PPARγ and DGAT2 genes. Finally, HFD increased serum leptin, insulin, glucose and insulin and glucose levels; however, PME reversed these changes. These results demonstrated that PME might relieve obesity that occurs via inhibition of adipogenesis and lipogenesis as well as through lipolysis and fatty acid oxidation in 3T3-L1 cells and HFD-induced obese mice.
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Lee MK, Lane C, Azeredo F, Landsberger M, Kapadia H, Sheller B, Yen SL. Clinical effectiveness of late maxillary protraction in cleft lip and palate: A methods paper. Orthod Craniofac Res 2018. [PMID: 28643931 DOI: 10.1111/ocr.12182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES A prospective parallel cohort trial was conducted to compare outcomes of patients treated with maxillary protraction vs LeFort 1 maxillary advancement surgery. SETTING AND SAMPLE POPULATION The primary site for the clinical trial is Children's Hospital Los Angeles; the satellite test site is Seattle Children's Hospital. All patients have isolated cleft lip and palate and a skeletal Class III malocclusion. MATERIAL AND METHODS A total of 50 patients, ages 11-14, will be recruited for the maxillary protraction cohort. The maxillary surgery cohort consists of 50 patients, ages 16-21, who will undergo LeFort 1 maxillary advancement surgery. Patients with additional medical or cognitive handicaps were excluded from the study. RESULTS Current recruitment of patients is on track to complete the study within the proposed recruitment period. CONCLUSION This observational trial is collecting information that will examine dental, skeletal, financial and quality-of-life issues from both research cohorts.
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Lee MK. Clinical usefulness of liposomal formulations in cancer therapy: lessons from the experiences of doxorubicin. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2018. [DOI: 10.1007/s40005-018-0398-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Choi JB, Lee SJ, Lee MK, Lee SJ, Park DC, Kim HY, Lee DS, Choe HS. Prevalence and Antimicrobial Susceptibility of Ureaplasma spp. and Mycoplasma hominis in Asymptomatic Individuals in Korea. Microb Drug Resist 2018; 24:1391-1396. [PMID: 29708840 DOI: 10.1089/mdr.2017.0431] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This study investigated the prevalence and antibiotic resistance of Ureaplasma spp. and Mycoplasma hominis isolated from asymptomatic individuals in Korea. Endocervical swabs from women and urine from men, from a total of 5,781 asymptomatic individuals, were analyzed using a Mycoplasma IST2 Kit. Of the 4,825 specimens tested from females, 486 (10.1%) were positive culture. In these positive specimens, 437 (9.1%) were positive only for Ureaplasma spp., 17 (0.4%) were positive only for M. hominis, and 32 (0.7%) were positive for both Ureaplasma spp. and M. hominis. In males, of the 956 tested specimens, only 4 (0.42%) were positive for Ureaplasma spp. and no M. hominis colonization was identified. In antimicrobial susceptibility tests, more than 93.2% of both M. hominis and Ureaplasma spp. was susceptible to tetracycline, doxycycline, josamycin, and pristinamycin. However, M. hominis isolates were found to be highly resistant to erythromycin, azithromycin, and clarithromycin (82.4%, 70.6%, and 76.5%, respectively). Ofloxacin and ciprofloxacin, which have recently exhibited increasing resistance rates, showed rates of 17.7% and 35.3%, respectively, in M. hominis, and 50.6% and 27.4%, respectively, in Ureaplasma spp. In conclusion, accurate antimicrobial susceptibility tests of the genital mycoplasmas should be conducted for each case to select the appropriate antibiotics. Fluoroquinolone-based drugs should be avoided in the initial treatment of urogenital mycoplasmas because of the increasing rate of resistance to quinolones, although the susceptibility to tetracycline remains high in Korea.
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Cho EB, Choi SH, Chung JW, Lee MK. Usefulness of national respiratory virus surveillance data for clinicians who manage adult patients. J Med Virol 2018; 90:1304-1309. [PMID: 29663437 PMCID: PMC7159113 DOI: 10.1002/jmv.25199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 03/19/2018] [Indexed: 11/24/2022]
Abstract
The Korean Centers for Disease Control and Prevention (KCDC) provides weekly respiratory virus (RV) surveillance reports on its website (the KCDC data). Clinicians in clinical settings wherein the use of PCR for RVs is not a routine laboratory test for adult patients with acute respiratory illness (ARI) may question the clinical utility of such a national RV surveillance dataset in predicting RV outbreaks among their adult patients. We compared the KCDC data to the RV PCR data of adult patients who visited a tertiary care center. During a period of 108 weeks, a total of 6955 (5598 pediatric and 1257 adult) patients underwent RV PCR tests for ARI; most of these tests were administered while the patients were admitted (n = 6,920; 99.5%). From the KCDC website, we collected the RV PCR test results of 22 540 patients. Three graphs of weekly positivity rates were made for adults, children, and the KCDC data per each RV, and these graphs were then compared with one another. Whereas RV outbreaks were coincident between the KCDC and the adult graph with respect to influenza virus, respiratory syncytial virus, human metapneumovirus, and human coronavirus, the same was not true for human bocavirus, parainfluenza virus, rhinovirus, and adenovirus. However, a negative predictive value of the KCDC data in the prediction of the occurrence of an outbreak in the adult graph was high for the respective eight RVs (85‐100%). A national RV surveillance dataset may be useful in identifying RV outbreaks in adult patients with severe ARI.
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Heo WI, Park KY, Lee MK, Kim JH, Moon NJ, Seo SJ. Association of CDKAL1 Polymorphisms with Early-Onset Atopic Dermatitis in Koreans. Ann Dermatol 2018; 30:276-283. [PMID: 29853740 PMCID: PMC5929943 DOI: 10.5021/ad.2018.30.3.276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 09/28/2017] [Accepted: 10/25/2017] [Indexed: 12/30/2022] Open
Abstract
Background Atopic dermatitis (AD) has increased in frequency to rates as high as 20% for children in developed countries. AD is one of the most common childhood diseases and has a complex etiology involving genetic and environmental factors. Thus, a broad understanding of genetic background is needed for early diagnosis of AD. Objective Identification of candidate functional genetic variants associated with early-onset AD in Koreans. Methods Whole-exome sequencing (WES) was performed in three families. Sanger sequencing was used to validate detected variants in 112 AD patients and 61 controls. Results Functional variants were filtered by WES, and then variants related to allergic immune diseases were selected through a literature search. Two candidate non-synonymous single-nucleotide polymorphisms of CDKAL1 (rs77152992) and ERBB2 (rs1058808) were identified, c.1226C>T, p.Pro409Leu, c.3463C>G, and p. Pro1170Ala respectively. A case-control study was performed to determine whether rs77152992 and rs1058808 are candidate risk factors for early-onset AD. rs77152992 was significantly associated with early-onset AD (odds ratio [OR], 0.42; 95% confidence interval [CI], 0.21~0.83; p=0.0133) in allele frequencies. The CC genotype of CDKAL1 had significantly increased risk of AD (OR, 2.16; 95% CI, 1.0~4.6; p=0.0475). rs1058808 had no correlation with AD. Total eosinophil count was significantly increased in AD patients with the CC genotype of CDKAL1 (rs77152992). Conclusion CDKAL1 (rs77152992) and ERBB2 (rs1058808) were deemed functionally interesting based on WES. Our case-control study suggests that the CC genotype of rs77152992 may be associated with increased eosinophil counts. It may enhance the risk of early-onset AD.
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Cho EB, Choi SH, Chung JW, Lee MK. Usefulness of national respiratory virus surveillance data for clinicians who manage adult patients. J Med Virol 2018. [DOI: 10.1002/jmv.25091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lee MK, Park SY, Choi GS. Association of support from family and friends with self-leadership for making long-term lifestyle changes in patients with colorectal cancer. Eur J Cancer Care (Engl) 2018; 27:e12846. [PMID: 29635763 DOI: 10.1111/ecc.12846] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2018] [Indexed: 01/09/2023]
Abstract
The purpose of this study was to examine the association of support from family and friends for adoption of healthy eating habits and performing exercise with improvements of self-leadership in patients with colorectal cancer (CRC). This cross-sectional study examined 251 patients with CRC who received primary curative surgery in South Korea. Demographic and clinical information, receipt of social support for adoption of healthy eating habits and performing exercise and self-leadership were collected. Greater participation by family and the use of rewards for performance of exercise were associated with greater behavioural awareness and volition, greater task motivation and constructive cognition of self-leadership in patients. Patients exercising with friends had greater task motivation in self-leadership. The use of rewards by family was associated with performing and maintaining exercise programme for more than 6 months, and family encouragement to adopt healthy eating habits was associated with excellent quality of diet. Family support for exercising and adopting healthy eating habits had more wide-ranging benefits in self-leadership than support from friends; however, support from each group improved self-leadership. Support from family was valuable for increasing the actual performance of exercise and for helping patients with cancer to adopt healthy diets.
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Song DW, Park BK, Suh SW, Lee SE, Kim JW, Park JM, Kim HR, Lee MK, Choi YS, Kim BG, Park YG. Bacterial culture and antibiotic susceptibility in patients with acute appendicitis. Int J Colorectal Dis 2018; 33:441-447. [PMID: 29488087 DOI: 10.1007/s00384-018-2992-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/21/2018] [Indexed: 02/04/2023]
Abstract
PURPOSE Essential treatment of acute appendicitis is surgical resection with the use of appropriate antibiotics. In order to effectively treat acute appendicitis, it is important to identify the microorganism of acute appendicitis and evaluate the effective antibiotics. METHODS A total of 694 patients who underwent appendectomy for acute appendicitis and had positive microbial result between 2006 and 2015 were recruited. For microbial assessment, luminal contents of the appendix were swabbed after appendectomy. In patients with periappendiceal abscess, the specimens were obtained from abscess fluid. The patient characteristics, operative data, use of antibiotics, the results of microbiology, and postoperative morbidities including surgical site infection (SSI) were retrospectively reviewed. RESULTS The mean age was 38.2 (± 19.8) years, and 422 patients (60.8%) were male. Most of the operations were performed by conventional laparoscopy (83.1%), followed by single-port laparoscopy (11.8%). The most common microorganism was Escherichia coli (64.6%), which was susceptible to amoxicillin/clavulanate, ciprofloxacin, most cephalosporins, piperacillin/tazobactam, and imipenem. The second most common microorganism was Pseudomonas aeruginosa (16.4%), which was resistant to amoxicillin/clavulanate and cefotaxime. The rate of postoperative morbidity was 8.6%, and the most common type was superficial SSI (6.2%), followed by ileus (1.2%), gastroenteritis (0.7%), and organ/space SSI (0.3%). P. aeruginosa (odds ratio = 2.128, 95% confidence interval 1.077-4.206, P = 0.030) was the only significant microorganism associated with SSI according to multivariate analysis adjusting for other clinical factors. CONCLUSIONS In perforated appendicitis, the use of empirical antibiotics seems to be safe. In some cases of Pseudomonas infection, adequate antibiotics should be considered.
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Lee SH, Oh JS, Lee KB, Lee JM, Hwang SH, Lee MK, Kwon EH, Kim CS, Choi IH, Yeo IY, Yoon JY, Im JM. Evaluation of abundance of artificial radionuclides in food products in South Korea and sources. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2018; 184-185:46-52. [PMID: 29334620 DOI: 10.1016/j.jenvrad.2018.01.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 01/04/2018] [Accepted: 01/08/2018] [Indexed: 06/07/2023]
Abstract
Food samples are collected nationwide from January 2016 to February 2017 and their contents of artificial radionuclides are measured to address the growing concerns regarding the radioactive contamination of food products in Korea. Specifically, 900 food samples are collected for this study and their contents of representative artificial radionuclides 134Cs, 137Cs, 239,240Pu, and 90Sr are analyzed. The analysis shows that the activity concentrations of 137Cs in fish range from minimum detectable activity (MDA) to 340 mBq/kg of fresh weight. The concentration factor (CF) determined for 137Cs as a measure of its bioavailability is calculated to be ca. 74 and found to be very similar to that (100) recommended by the International Atomic Energy Agency. With an MDA of <0.221 mBq/kg, the results reveal that 239,240Pu values in fish are below the MDA. The activity concentrations of 137Cs and 90Sr are lower than the MDA in both shellfish and seaweed, while the activity concentrations of 239,240Pu in shellfish range from 0.26 to 2.18 mBq/kg, and for seaweed samples range from 2.07 to 3.38 mBq/kg. The atom ratios of 240Pu/239Pu in shellfish caught at the Korean coast vary from 0.209 to 0.237, with a mean of 0.227. The higher 240Pu/239Pu atom ratio determined in shellfish is thought to be caused by the plutonium transported from the Pacific Proving Grounds rather than other sources such as the Fukushima nuclear power plant accident. The activity concentrations of 137Cs in mushrooms are found to vary from 1.0 to 21.4 Bq/kg, with the highest concentrations observed in the Oak (shiitake) and Sarcodon asparatus. 134Cs is detected in three mushroom specimens collected from Jeju Island and about 3-3.6% of 137Cs present in the wild mushrooms native to the Jeju Island are introduced as a result of the Fukushima nuclear plant accident. The annual effective doses of 137Cs received through consumption of mushrooms and fish are 2.0 × 10-4 mSv yr-1 and 3.9 × 10-5 mSv yr-1, and those values are negligible compared to the annual effective doses limit of 1 mSv yr-1.
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Lee J, Park EB, Min J, Sung SE, Jang Y, Shin JS, Chun D, Kim KH, Hwang J, Lee MK, Go YY, Kwon D, Kim M, Kang SJ, Choi BS. Systematic editing of synthetic RIG-I ligands to produce effective antiviral and anti-tumor RNA immunotherapies. Nucleic Acids Res 2018; 46:1635-1647. [PMID: 29373735 PMCID: PMC5829749 DOI: 10.1093/nar/gky039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 01/17/2018] [Indexed: 12/25/2022] Open
Abstract
Retinoic acid-inducible gene I (RIG-I) recognizes double-stranded viral RNAs (dsRNAs) containing two or three 5' phosphates. A few reports of 5'-PPP-independent RIG-I agonists have emerged, but little is known about the molecular principles underlying their recognition. We recently found that the bent duplex RNA from the influenza A panhandle promoter activates RIG-I even in the absence of a 5'-triphosphate moiety. Here, we report that non-canonical synthetic RNA oligonucleotides containing G-U wobble base pairs that form a bent helix can exert RIG-I-mediated antiviral and anti-tumor effects in a sequence- and site-dependent manner. We present synthetic RNAs that have been systematically modified to enhance their efficacy and we outline the basic principles for engineering RIG-I agonists applicable to immunotherapy.
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Heo WI, Park KY, Lee MK, Kim JH, Moon NJ, Seo SJ. Erratum: Association of CDKAL1 Polymorphisms with Early-Onset Atopic Dermatitis in Koreans. Ann Dermatol 2018; 30:643. [PMID: 33911502 PMCID: PMC7992495 DOI: 10.5021/ad.2018.30.5.643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lee CJ, Kim JY, Shim E, Hong SH, Lee M, Jeon JY, Park S. The Effects of Diet Alone or in Combination with Exercise in Patients with Prehypertension and Hypertension: a Randomized Controlled Trial. Korean Circ J 2018; 48:637-651. [PMID: 29968437 PMCID: PMC6031728 DOI: 10.4070/kcj.2017.0349] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 02/28/2018] [Accepted: 03/14/2018] [Indexed: 01/13/2023] Open
Abstract
Background and Objectives Supervised lifestyle interventions, including dietary and exercise programs, may be infeasible to implement in real-world settings. Therefore, this study aimed to evaluate the effectiveness of a home-based lifestyle modification intervention on blood pressure (BP) management. Methods Eighty-five patients aged over 20 years and diagnosed with prehypertension or mild hypertension were randomly assigned to an advice-only comparison group (C group, n=28), a Dietary Approaches to Stop Hypertension (DASH) diet education group (D group, n=30), or a DASH and home-based exercise group (D+Ex group, n=27). The intervention lasted for 8 weeks. The primary outcome was the difference in office systolic blood pressure (SBP) before and after the study period (Trial registry at ClinicalTrials.gov, NCT01637909). Results Seventy-two participants (87.8%) completed the trial. The degree of change in office SBP did not significantly differ among the intervention groups; however, the D+Ex group demonstrated a tendency toward decreased SBP. Upon analysis of 24-hour ambulatory BP measurements, daytime ambulatory SBP was significantly lower in the D+Ex group (134 mmHg; 95% confidence interval [CI], 131 to 137; p=0.011) than in the C group (139.5 mmHg; 95% CI, 130.9 to 137), and daytime ambulatory SBP was significantly decreased in the D+Ex group (−5.2 mmHg; 95% CI, −8.3 to −2.1; p=0.011) compared to the C group (0.4 mmHg, 95% CI, −2.5 to 3.3). Conclusions In conclusion, lifestyle modification emphasizing both diet and exercise was effective for lowering BP and should be favored over diet-only modifications.
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Sung H, Kim MN, Yong D, Lee M, Lee J, Lee MK, Chae HS, Lee HK. Multicenter Study on the Association of Positive Helicobacter pylori Stool Antigen to Anemia in Children. ANNALS OF CLINICAL MICROBIOLOGY 2018. [DOI: 10.5145/acm.2018.21.3.58] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Choi RY, Ham JR, Yeo J, Hur JS, Park SK, Kim MJ, Lee MK. Anti-Obesity Property of Lichen Thamnolia vermicularis Extract in 3T3-L1 Cells and Diet-Induced Obese Mice. Prev Nutr Food Sci 2017; 22:285-292. [PMID: 29333380 PMCID: PMC5758091 DOI: 10.3746/pnf.2017.22.4.285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/10/2017] [Indexed: 12/30/2022] Open
Abstract
Thamnolia vermicularis (TV) is an edible lichen that is prevalent in the alpine zone of East Asia. This study evaluated the feasibility of using TV acetone extracts as a functional food based on experiments using cell line and obese mice. The cellular triglyceride levels and Oil red O staining of 3T3-L1 cells indicated that TV extracts (5 and 10 μg/mL) dose-dependently suppressed adipocyte differentiation and lipid accumulation compared with the control. The TV extract (0.4%, w/w) in a high-fat diet (HFD) was supplemented to C57BL/6N mice for 12 weeks, and TV extract supplement significantly reduced visceral fat mass and body weight compared with HFD feeding alone. The TV extract also induced significant decreases in serum and hepatic lipids, whereas it increased the serum high-density lipoproteins-cholesterol/total cholesterol ratio and fecal lipids levels. Moreover, the TV extract led to significantly lower homeostasis model assessment of insulin resistance in diet-induced obese mice. Taken together, these results suggest that the TV extract may have anti-obesity effects, including lipid-lowering, and it is a natural resource with the potential for use in obesity management.
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Cho HD, Lee JH, Moon KD, Park KH, Lee MK, Seo KI. Auriculasin-induced ROS causes prostate cancer cell death via induction of apoptosis. Food Chem Toxicol 2017; 111:660-669. [PMID: 29217266 DOI: 10.1016/j.fct.2017.12.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 12/01/2017] [Accepted: 12/03/2017] [Indexed: 01/11/2023]
Abstract
Recent studies have demonstrated that natural agents targeting the accumulation of reactive oxygen species (ROS) that selectively kill, leaving normal cells undamaged, can suppress prostate cancer. Here, we show that auriculasin, derived from Flemingia philippinensis, induces significant cell death and apoptosis via ROS generation in prostate cancer cells. Auriculasin treatment resulted in selective apoptotic cell death in LNCaP prostate cancer cells, characterized by DNA fragmentation, accumulation of sub-G1 cell population, cleavage of poly (ADP-ribose) polymerase (PARP), regulation of Bax/Bcl-2 ratio, increase of cytosolic apoptosis-inducing factor (AIF) and endonuclease G (EndoG), in addition to inhibiting tumor growth in a xenograft mouse model. Interestingly, auriculasin-induced apoptosis did not result in caspase-3, -8, and -9 activations. We found that auriculasin treatment decreased phosphorylation of AKT/mTOR/p70s6k in a dose- and time-dependent manner. Further, cellular ROS levels increased in LNCaP cells treated with auriculasin and blocking ROS accumulation with ROS scavengers resulted in inhibition of auriculasin-induced PARP cleavage, AIF increase, upregulation of Bax/Bcl-2 ratio, and decrease in AKT/mTOR phosphorylation. Taken together, these data suggest that auriculasin targets ROS-mediated caspase-independent pathways and suppresses PI3K/AKT/mTOR signaling, which leads to apoptosis and decreased tumor growth.
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