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Fidler DJ, Prince MA, Van Deusen K, Esbensen AJ, Thurman AJ, Abbeduto L, Patel L, Mervis C, Schworer EK, Lee NR, Edgin JO, Hepburn S, Davis S, Daunhauer LA. Latent profiles of autism symptoms in children and adolescents with Down syndrome. J Intellect Disabil Res 2022; 66:265-281. [PMID: 34984734 PMCID: PMC9009451 DOI: 10.1111/jir.12910] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 11/12/2021] [Accepted: 11/14/2021] [Indexed: 05/29/2023]
Abstract
BACKGROUND Down syndrome (DS) is associated with elevated rates of autism spectrum disorder (ASD) and autism symptomatology. To better characterise heterogeneity in ASD symptomatology in DS, profiles of caregiver-reported ASD symptoms were modelled for children and adolescents with DS. METHODS Participants (n = 125) were recruited through several multi-site research studies on cognition and language in DS. Using the Social Responsiveness Scale-2 (SRS-2; Constantino and Gruber 2012), two latent profile analyses (LPA) were performed, one on the broad composite scores of social communication and interaction and restricted interests and repetitive behaviour, and a second on the four social dimensions of social communication, social motivation, social awareness, and social cognition. RESULTS A three-profile model was the best fit for both analyses, with each analysis yielding a low ASD symptom profile, an elevated or mixed ASD symptom profile and a high ASD symptom profile. Associations were observed between profile probability scores and IQ, the number of co-occurring biomedical conditions reported, sex, and SRS-2 form. CONCLUSIONS Characterising heterogeneity in ASD symptom profiles can inform more personalised supports in this population, and implications for potential therapeutic approaches for individuals with DS are discussed.
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Affiliation(s)
- D J Fidler
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
| | - M A Prince
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
- Department of Psychology, Colorado State University, Fort Collins, CO, USA
| | - K Van Deusen
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
| | - A J Esbensen
- Department of Pediatrics, Cincinnati Children's Hospital Medical Campus, Cincinnati, OH, USA
| | - A J Thurman
- Department of Psychiatry, MIND Institute, University of California - Davis Health, Sacramento, CA, USA
| | - L Abbeduto
- Department of Psychiatry, MIND Institute, University of California - Davis Health, Sacramento, CA, USA
| | - L Patel
- Department of Psychiatry, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | - C Mervis
- Department of Psychological and Brain Sciences, University of Louisville, Louisville, KY, USA
| | - E K Schworer
- Department of Pediatrics, Cincinnati Children's Hospital Medical Campus, Cincinnati, OH, USA
| | - N R Lee
- Department of Psychology, Drexel University, Philadelphia, PA, USA
| | - J O Edgin
- Sonoran University Center for Excellence in Developmental Disabilities, University of Arizona, Tucson, AZ, USA
| | - S Hepburn
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
| | - S Davis
- Department of Psychology, Colorado State University, Fort Collins, CO, USA
| | - L A Daunhauer
- Human Development and Family Studies, Colorado State University, Fort Collins, CO, USA
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Lee NR, Chung SH, Song MK, Kong YH, Joo CU, Kim SJ. A Comparative Analysis of Clinical Screening Test and Language Specific Test in Language Delay Children. Chonnam Med J 2020; 56:44-49. [PMID: 32021841 PMCID: PMC6976769 DOI: 10.4068/cmj.2020.56.1.44] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/03/2019] [Accepted: 10/04/2019] [Indexed: 12/02/2022] Open
Abstract
The aim of this study was to investigate the usefulness of a clinical screening test [the Korean Infant and Child Developmental Test (KICDT)] compared to language specific tests: the sequenced language scale for infant (SELSI) and the Preschool Receptive-Expressive language Scale (PRES) in children with delayed language development. A retrospective chart review was conducted on 615 children who visited the Department of Pediatrics at Chonbuk National University Hospital from January 2013 to December 2016. All patients were evaluated with KICDT as a clinical screening test and SELSI or PRES as a language specific test. Language Developmental Quotients (LDQs) from the KICDT were compared with the Receptive Language Quotient (RLQ) and expressive language quotient (ELQ) from the SELSI or PRES. The sensitivity, specificity and predictive values of LDQ of KICDT were calculated by comparing with SELSI/PRES. Language DQs from the KICDT were significantly correlated with the RLQ (r=0.706), ELQ (r=0.768), and total language quotient (TLQ) (r=0.766) from the SELSI/PRES (p<0.05). In cross tabulation, the patients belonging to the retardation groups in both KICDT and SELSI/PRES were 417 (67.8%). Otherwise, patients belonging to the normal group in KICDT but not in SELSI/PRES were 151 (24.6%). Sensitivity and specificity of LDQ of KICDT relative to SELSI/PRES were 72.3% and 92.2% respectively (p<0.05). Our data suggests that clinical screening tests alone, not cumbersome language specific tests, can determine language developmental delays in children.
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Affiliation(s)
- Na Ra Lee
- Department of Pediatrics, Chonbuk National University Medical School, Jeonju, Korea
| | - So Hee Chung
- Department of Pediatrics, Chonbuk National University Medical School, Jeonju, Korea
| | - Mi Kyoung Song
- Department of Pediatrics, Chonbuk National University Medical School, Jeonju, Korea
| | - Young Hwa Kong
- Department of Pediatrics, Chonbuk National University Medical School, Jeonju, Korea
| | - Chan Uhng Joo
- Department of Pediatrics, Chonbuk National University Medical School, Jeonju, Korea
| | - Sun Jun Kim
- Department of Pediatrics, Chonbuk National University Medical School, Jeonju, Korea.,Research Institute of Clinical Medicine, Chonbuk National University, Jeonju, Korea.,Biomedical Research Institute of Chonbuk National University Medical School, Jeonju, Korea
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Choung HW, Lee SH, Ham AR, Lee NR, Kim B, Pang KM, Jahng JW, Lee JH. Effectiveness of Low-Level Laser Therapy with a 915 Nm Wavelength Diode Laser on the Healing of Intraoral Mucosal Wound: An Animal Study and a Double-Blind Randomized Clinical Trial. Medicina (Kaunas) 2019; 55:E405. [PMID: 31344985 PMCID: PMC6722629 DOI: 10.3390/medicina55080405] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/02/2019] [Accepted: 07/23/2019] [Indexed: 12/20/2022]
Abstract
Background and objectives: Diode laser has been the most popular low-level laser therapy (LLLT) technique in dentistry due to its good tissue penetration, lower financial costs, small size for portable application, and convenience to use. A series of recent studies with 940 nm or 980 nm lasers demonstrated that LLLT showed positive effects after third molar extraction or periodontal flap surgery. However, the effects of LLLT on intraoral mucosal wound healing after surgical incision have not yet been determined in human clinical study. Materials and Methods: The present study was performed to determine the efficacy and safety of 915 nm wavelength low-level laser therapy (LLLT) in mucosal wound healing. A total of 108 Sprague-Dawley rats were used. They were divided into three groups: Abrasive wound group, immediate LLLT once group, and daily LLLT group. As a clinical study, a total of 16 patients with split-mouth design subjected to bilateral mandibular third molar extraction were allocated into the LLLT group and placebo group. The process of LLLT was performed on postoperative days 0, 1, and 7, and parameters related to wound healing were analyzed on days 1, 7, and 14. Results: Repeated laser irradiation promoted mucosal wound healing of the rats. In the clinical study, although there were no significant statistical differences between the LLLT and placebo groups in all inflammatory parameters, the early stage mucosal healing tendency of wound dehiscence was higher in the LLLT group than in the placebo group clinically on postoperative day 1. Conclusions: The present results showed that 915 nm LLLT could be applied safely as an auxiliary therapy for mucosal wound healing.
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Affiliation(s)
- Han-Wool Choung
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul 03080, Korea
| | - Sung-Ho Lee
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul 03080, Korea
- Dental Life Science Research Institute & Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul 03080, Korea
- School of Dentistry and Dental Research Institute, Seoul National University, Seoul 03080, Korea
| | - Ahe Reum Ham
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul 03080, Korea
| | - Na Ra Lee
- Clinical Research Team, Dentium, 21, Seoul 06169, Korea
| | - Bongju Kim
- Dental Life Science Research Institute & Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul 03080, Korea
| | - Kang-Mi Pang
- Department of Oral and Maxillofacial Surgery, Seoul National University Kwanak Dental Hospital, Seoul 08826, Korea
| | - Jeong Won Jahng
- School of Dentistry and Dental Research Institute, Seoul National University, Seoul 03080, Korea
| | - Jong-Ho Lee
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul 03080, Korea.
- Dental Life Science Research Institute & Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul 03080, Korea.
- School of Dentistry and Dental Research Institute, Seoul National University, Seoul 03080, Korea.
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Yoon NY, Wang HY, Jun M, Jung M, Kim DH, Lee NR, Hong KW, Seo SJ, Choi E, Lee J, Lee H, Choi EH. Simultaneous detection of barrier- and immune-related gene variations in patients with atopic dermatitis by reverse blot hybridization assay. Clin Exp Dermatol 2018; 43:430-436. [PMID: 29380403 DOI: 10.1111/ced.13367] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2017] [Indexed: 01/06/2023]
Abstract
BACKGROUND Hereditary factors are involved in the pathogenesis of atopic dermatitis (AD). However, AD-related gene variations are significantly different across ethnicities. AIM To identify mutations and single-nucleotide polymorphisms (SNPs) in barrier- or immune-related genes from Korean patients with AD and compare the variations with those observed in nonatopic healthy controls (HCs), and to use novel reverse blot hybridization assay (REBA) for AD-related gene variants. METHODS We carried out REBA to simultaneously detect variations in genes related to barrier or immune function, namely, FLG, SPINK5, KLK7, DEFB1, TNFα, KDR, FCER1A, IL4, IL5,IL5RA, IL9, IL10, IL12, IL12R, IL13 and IL18, from Korean patients with AD, and compared the variation to that in nonatopic healthy controls. RESULTS The homozygous mutants of KLK7 and SPINK5-2475, and the heterozygous mutants of FLG 3321delA, SPINK5-1156, DEFB1, KDR, IL5RA, IL9 and IL12RB1 were significantly more frequent in AD. It has been predicted that the larger the number of gene variants, the higher the odds ratio of AD prevalence; however, we did not find any significant correlation between the number of gene variants and AD severity. CONCLUSION Using REBA, we identified more genetic variants that can predict AD occurrence. We also verified that REBA can be used to easily and accurately detect multiple AD-related gene variants simultaneously. In addition, we identified a correlation between KLK7 mutation and AD in Koreans, which is the first such report, to our knowledge.
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Affiliation(s)
- N Y Yoon
- Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - H Y Wang
- M&D, Inc., Wonju Eco Environmental Technology Center, Wonju, Republic of Korea
| | - M Jun
- Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - M Jung
- Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - D H Kim
- Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - N R Lee
- Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - K-W Hong
- TheragenEtex Bio Institute, Suwon, Republic of Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - E Choi
- Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - J Lee
- Department of Biomedical Laboratory Science, Yonsei University College of Health Sciences, Wonju, Republic of Korea
| | - H Lee
- Department of Biomedical Laboratory Science, Yonsei University College of Health Sciences, Wonju, Republic of Korea
| | - E H Choi
- Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
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Ko JH, Lee NR, Joo EJ, Moon SY, Choi JK, Park DA, Peck KR. Appropriate non-carbapenems are not inferior to carbapenems as initial empirical therapy for bacteremia caused by extended-spectrum beta-lactamase-producing Enterobacteriaceae: a propensity score weighted multicenter cohort study. Eur J Clin Microbiol Infect Dis 2017; 37:305-311. [PMID: 29177611 DOI: 10.1007/s10096-017-3133-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 11/02/2017] [Indexed: 02/07/2023]
Abstract
The efficacy of empirical non-carbapenem antibiotics for extended-spectrum beta-lactamase-producing Enterobacteriaceae bacteremia (ESBL-B) is still inconclusive. We conducted a multicenter retrospective cohort study to evaluate the efficacy of empirical non-carbapenem antibiotics for treating ESBL-B. Electronic medical records of individuals who were diagnosed with ESBL-B were reviewed between January 2010 and December 2014 at four university hospitals in Korea. Patients were classified into non-carbapenem and carbapenem groups according to the empirical antibiotic regimen. Patients treated with appropriate empirical antibiotics and who subsequently received carbapenems as definitive therapy were included in the analysis. The inverse probability of treatment weights, a statistical method that adjusts baseline statistics by giving weights based on propensity score, was used. During the study period, 232 adequately treated patients with ESBL-B were included in the analysis: 49 patients in the non-carbapenem group and 183 in the carbapenem group. The baseline characteristics and severity of infection were similar after propensity score weighting. The 30-day mortality rates for the two groups were not statistically significantly different (non-carbapenems 6.3% and carbapenems 11.4%; P = 0.42). In a multivariate analysis, empirical treatment with non-carbapenem antibiotics was not associated with 30-day all-cause mortality (HR 1.02, 95% CI 0.99-1.06, P = 0.14). In a subgroup analysis, empirical treatment with piperacillin-tazobactam was also not associated with 30-day all-cause mortality (HR 1.21, 95% CI 0.37-4.00, P = 0.75). Appropriate non-carbapenems were not inferior to carbapenems as initial empirical therapy for ESBL-B.
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Affiliation(s)
- J-H Ko
- Division of Infectious Diseases, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea.,Division of Infectious Diseases, Department of Internal Medicine, Armed Forces Capital Hospital, Seongnam, South Korea
| | - N R Lee
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Republic of Korea
| | - E-J Joo
- Division of Infectious Diseases, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S-Y Moon
- Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - J-K Choi
- Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
| | - D A Park
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Republic of Korea.
| | - K R Peck
- Division of Infectious Diseases, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea.
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Joo EJ, Park DA, Lee NR, Moon SY, Choi JK, Ko JH, Peck KR. Impact of appropriateness of empiric therapy on outcomes in community-onset bacteremia by extended-spectrum-β-lactamase producing Escherichia coli and Klebisella pneumoniae definitively treated with carbapenems. Eur J Clin Microbiol Infect Dis 2017. [PMID: 28643188 DOI: 10.1007/s10096-017-3031-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Despite a significant increase of bloodstream infection caused by extended-spectrum-β-lactamase (ESBL)-producing Enterobacteriaceae in the community-setting, information regarding clinical outcomes of inappropriate empiric therapy (IAT) in patients with those infections is limited. A multicenter-retrospective cohort study was conducted in four hospitals. A total of 249 adults were identified to have community-onset bacteremia caused by ESBL-producing Escherichia coli and Klebsiella pneumoniae, and definitively treated with carbapenems. According to the appropriateness of empiric therapy, individuals were divided into an appropriate empiric therapy (AT) group (n = 106) and IAT group (n = 143). Patients who received AT showed more severe underlying conditions including underlying solid cancer, healthcare-association and intensive care unit (ICU) care, compared to the IAT group. Primary bacteremia was more commonly found in the AT group than in the IAT group, while urinary tract infection predominated more frequently in the IAT group than in the AT group. Multivariate analysis using propensity score analysis indicated that inappropriateness of empiric therapy was not an independent risk factor for 30-day death. ICU care, respiratory tract infection and underlying liver, renal and connective tissue diseases were significantly associated with mortality. In patients with bloodstream infections caused by ESBL-producing E. coli and K. pneumoniae in the community-setting, delay in appropriate therapy was not associated with an increased rate of death if the patients were definitively treated with carbapenems.
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Affiliation(s)
- E-J Joo
- Division of Infectious Diseases, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - D A Park
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, South Korea
| | - N R Lee
- Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, South Korea
| | - S-Y Moon
- Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Kyung Hee Univeristy College of Medicine, Seoul, South Korea
| | - J-K Choi
- Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, South Korea
| | - J-H Ko
- Division of Infectious Diseases, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - K R Peck
- Division of Infectious Diseases, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea.
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Yang HJ, Kim MJ, Kang S, Moon NR, Kim DS, Lee NR, Kim KS, Park S. Topical treatments of Saussurea costus root and Thuja orientalis L. synergistically alleviate atopic dermatitis-like skin lesions by inhibiting protease-activated receptor-2 and NF-κB signaling in HaCaT cells and Nc/Nga mice. J Ethnopharmacol 2017; 199:97-105. [PMID: 28159725 DOI: 10.1016/j.jep.2017.01.055] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 11/24/2016] [Accepted: 01/30/2017] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The root of Saussurea costus (Aucklandia lappa Decne, Aucklandiae Radix, SC) and Thuja orientalis L. (TOL) have been traditionally used as anti-inflammatory agents in Korea. However, they have not been studied for the efficacy of atopic dermatitis (AD) treatment, a chronic inflammatory skin disease. We investigated the efficacy of topical applications with 1,3-butyleneglycol extracts of SC and TOL to alleviate the symptoms of AD. MATERIALS AND METHODS HaCaT cells and the dorsal skin of Nc/Nga mice had a local exposure of house mite extracts and 2,4-dinitrochlorobenzene (DNCB), respectively. After lesions developed, we topically applied 1,3-butylen glycol (vehicle; control), SC (30%), TOL (30%), or SC (15%)+TOL (15%) to the skin lesions for 5 weeks. The normal-control was not exposed to DNCB. The skin thickness, mast cell infiltration, serum immunoglobulin E (IgE) and IgG1 and gene expressions of interleukin (IL)-4, IL-13, and IFN-γ in the dorsal skin and HaCaT cells were measured. RESULTS Chlorogenic acid (129.6±10.2μg/g) for SC and catechin and apigenin (93.4±13.2 and 16.9±1.3μg/g, respectively) for TOL were used as indicator compounds for the strength of the extracts. SC+TOL decreased the expression of protease-activated receptor-2 and ICAM-1 and the release of TNF-α and IL-6 in HaCaT cells activated by 3μg/mL house mite extracts in comparison to either of SC or TOL alone. In Nc/Nga mice challenged with DNCB, SC+TOL synergistically attenuated clinical symptoms of AD such as erythema, hemorrhage, edema, excoriation and dryness in the dorsal skin better than either SC or TOL alone. Histological analysis of the dorsal skin also showed that SC+TOL treatment significantly and additively decreased the inflammatory cellular infiltrate, including mast cells and eosinophils in comparison to either of SC or TOL. SC+TOL also decreased serum IgE and IgG1 levels and the expression of IFN-γ, IL-4, and IL-13 mRNA in dorsal skin in DNCB-treated Nc/Nga mice. CONCLUSION SC+TOL relieved the symptoms of AD by reducing pro-inflammatory activity and over-activated immune responses. These data suggest that SC+TOL may be an effective alternative intervention for the management of AD.
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Affiliation(s)
- Hye Jeong Yang
- Division of Strategic Food Industry Research, Korea Food Research Institute, South Korea; Department of Food Science and Nutrition, Yong In University, South Korea.
| | - Min Jung Kim
- Division of Nutrition and Metabolism Research, Korea Food Research Institute, South Korea; Department of Food Science and Nutrition, Yong In University, South Korea.
| | - Suna Kang
- Department of Food and Nutrition, Obesity/Diabetes Center, Hoseo University, Asan, South Korea.
| | - Na Rang Moon
- Department of Food and Nutrition, Obesity/Diabetes Center, Hoseo University, Asan, South Korea.
| | - Da Sol Kim
- Department of Food and Nutrition, Obesity/Diabetes Center, Hoseo University, Asan, South Korea.
| | - Na Ra Lee
- Department of Nanobiomechatronics, Hoseo University, Asan, South Korea.
| | - Kang Sung Kim
- Department of Food Science and Nutrition, Yong In University, South Korea.
| | - Sunmin Park
- Department of Food and Nutrition, Obesity/Diabetes Center, Hoseo University, Asan, South Korea.
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Kang S, Lee SH, Shim YN, Oh MJ, Lee NR, Park S. Antioxidant capacity of anthocyanin-rich fruits and vegetables and changes of quality characteristics of black carrot added pudding according to storage. ACTA ACUST UNITED AC 2016. [DOI: 10.3839/jabc.2016.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Lee NR, Kim SB, Heo H, Lee YH. Comparison of the Effects of Manual Acupuncture, Laser Acupuncture, and Electromagnetic Field Stimulation at Acupuncture Point BL15 on Heart Rate Variability. J Acupunct Meridian Stud 2016; 9:257-263. [PMID: 27776764 DOI: 10.1016/j.jams.2016.06.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 05/26/2016] [Accepted: 06/02/2016] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to compare the influences of manual acupuncture, laser acupuncture, and electromagnetic field stimulation on the autonomic nervous system. We monitored the heart rate variability before and after stimulation to check the influence on the autonomic nervous system. The heart rate variabilities at low frequency (LF; 0.04-0.15 Hz) and high frequency (HF; 0.15-0.4 Hz) were analyzed to acquire LF/HF ratio. Xinshu (BL15) was selected as the stimulation point. Methods included manual acupuncture with a 1-cm depth and laser acupuncture at a wavelength of 660 nm and output power of 50 mW. An electromagnetic field of 2 Hz and 460 gauss (46 mT) was chosen. The LF and the LF/HF ratio were found to be lower in the manual acupuncture and the electromagnetic field groups, but to be higher in the laser acupuncture group. The HF was found to be lower in the laser acupuncture group, but higher in the manual acupuncture and the electromagnetic field groups. In conclusion, we found that manual acupuncture and electromagnetic field stimulation at BL15 activated the parasympathetic nervous system, whereas laser acupuncture at BL15 activated the sympathetic nervous system.
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Affiliation(s)
- Na Ra Lee
- Eastern and Western Biomedical System Laboratory, Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, South Korea
| | - Soo Byeong Kim
- Wellness Technology R&D Center, Human and Culture Convergence Technology R&D Group, Korea Institute of Industrial Technology, Ansan, South Korea
| | - Hyun Heo
- Medical Computer System Laboratory, Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, South Korea
| | - Yong Heum Lee
- Eastern and Western Biomedical System Laboratory, Department of Biomedical Engineering, College of Health Science, Yonsei University, Wonju, South Korea.
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Park S, Zhang X, Lee NR, Jin HS. TRPV1 Gene Polymorphisms Are Associated with Type 2 Diabetes by Their Interaction with Fat Consumption in the Korean Genome Epidemiology Study. J Nutrigenet Nutrigenomics 2016; 9:47-61. [DOI: 10.1159/000446499] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 04/25/2016] [Indexed: 11/19/2022]
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Jin S, Park CO, Shin JU, Noh JY, Lee YS, Lee NR, Kim HR, Noh S, Lee Y, Lee JH, Lee KH. DAMP molecules S100A9 and S100A8 activated by IL-17A and house-dust mites are increased in atopic dermatitis. Exp Dermatol 2015; 23:938-41. [PMID: 25308296 DOI: 10.1111/exd.12563] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2014] [Indexed: 11/28/2022]
Abstract
S100A9 and S100A8 are called damage-associated molecular pattern (DAMP) molecules because of their pro-inflammatory properties. Few studies have evaluated S100A9 and S100A8 function as DAMP molecules in atopic dermatitis (AD). We investigated how house-dust mites affect S100A9 and S100A8 expression in Th2 cytokine- and Th17 cytokine-treated keratinocytes, and how secretion of these molecules affects keratinocyte-derived cytokines. Finally, we evaluated expression of these DAMP molecules in AD patients. S100A9 expression and S100A8 expression were strongly induced in IL-17A- and Dermatophagoides (D.) farinae-treated keratinocytes, respectively. Furthermore, co-treatment with D. farinae and IL-17A strongly increased expression of S100A9 and S100A8 compared with D. farinae-Th2 cytokine co-treatment. The IL-33 mRNA level increased in a dose-dependent manner in S100A9-treated keratinocytes, but TSLP expression did not change. S100A8/A9 levels were also higher in the lesional skin and serum of AD patients, and correlated with disease severity. Taken together, S100A9 and S100A8 may be involved in inducing DAMP-mediated inflammation in AD triggered by IL-17A and house-dust mites.
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Affiliation(s)
- Shan Jin
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea; Department of Dermatology, Yanbian University Hospital, Yanji, Jilin, China
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Kim GW, Lee NR, Pi RH, Lim YS, Lee YM, Lee JM, Jeong HS, Chung SH. IL-6 inhibitors for treatment of rheumatoid arthritis: past, present, and future. Arch Pharm Res 2015; 38:575-84. [PMID: 25648633 DOI: 10.1007/s12272-015-0569-8] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 01/23/2015] [Indexed: 10/24/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by polyarthritis. Numerous agents with varying mechanisms are used in the treatment of RA, including non-steroidal anti-inflammatory drugs, disease-modifying anti-rheumatic drugs, and some biological agents. Studies to uncover the cause of RA have recently ended up scrutinizing the importance of pro-inflammatory cytokine such as tumor necrosis factor α (TNF-α) and interleukin (IL)-6 in the pathogenesis of RA. TNF-α inhibitors are increasingly used to treat RA patients who are non-responsive to conventional anti-arthritis drugs. Despite its effectiveness in a large patient population, up to two thirds of RA patients are found to be partially responsive to anti-TNF therapy. Therefore, agents targeting IL-6 such as tocilizumab (TCZ) attracted significant attention as a promising agent in RA treatment. In this article, we review the mechanism of anti-IL-6 in the treatment of RA, provide the key efficacy and safety data from clinical trials of approved anti-IL-6, TCZ, as well as six candidate IL-6 blockers including sarilumab, ALX-0061, sirukumab, MEDI5117, clazakizumab, and olokizumab, and their future perspectives in the treatment of RA.
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Affiliation(s)
- Go Woon Kim
- Department of Pharmacology and Clinical Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, 130-701, Republic of Korea
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Lenroot RK, Blumenthal JD, Wallace GL, Clasen LS, Lee NR, Giedd JN. A case-control study of brain structure and behavioral characteristics in 47,XXX syndrome. Genes Brain Behav 2014; 13:841-9. [PMID: 25287572 PMCID: PMC4241137 DOI: 10.1111/gbb.12180] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 10/01/2014] [Accepted: 10/02/2014] [Indexed: 11/27/2022]
Abstract
Trisomy X, the presence of an extra X chromosome in females (47,XXX), is a relatively common but under-recognized chromosomal disorder associated with characteristic cognitive and behavioral features of varying severity. The objective of this study was to determine whether there were neuroanatomical differences in girls with Trisomy X that could relate to cognitive and behavioral differences characteristic of the disorder during childhood and adolescence. MRI scans were obtained on 35 girls with Trisomy X (mean age 11.4, SD 5.5) and 70 age- and sex-matched healthy controls. Cognitive and behavioral testing was also performed. Trisomy X girls underwent a semi-structured psychiatric interview. Regional brain volumes and cortical thickness were compared between the two groups. Total brain volume was significantly decreased in subjects with Trisomy X, as were all regional volumes with the exception of parietal gray matter. Differences in cortical thickness had a mixed pattern. The subjects with Trisomy X had thicker cortex in bilateral medial prefrontal cortex and right medial temporal lobe, but decreased cortical thickness in both lateral temporal lobes. The most common psychiatric disorders present in this sample of Trisomy X girls included anxiety disorders (40%), attention-deficit disorder (17%) and depressive disorders (11%). The most strongly affected brain regions are consistent with phenotypic characteristics such as language delay, poor executive function and heightened anxiety previously described in population-based studies of Trisomy X and also found in our sample.
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Affiliation(s)
- R K Lenroot
- School of Psychiatry, University of New South Wales, Sydney, NSW, Australia; Neuroscience Research Australia, Sydney, NSW, Australia
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Park S, Lee NR, Lee KE, Park JY, Kim YJ, Gwak HS. Effects of single-nucleotide polymorphisms of FMO3 and FMO6 genes on pharmacokinetic characteristics of sulindac sulfide in premature labor. Drug Metab Dispos 2013; 42:40-3. [PMID: 24173915 DOI: 10.1124/dmd.113.054106] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study aimed to investigate the effects of polymorphisms of the flavin-containing mono-oxygenase 3 (FMO3) and flavin-containing mono-oxygenase 6 (FMO6) genes on the pharmacokinetics of sulindac sulfide, the active metabolite of sulindac, in patients with preterm labor. Ten single-nucleotide polymorphisms (SNPs) were genotyped, and plasma sulindac sulfide concentrations were measured at 0, 1.5, 4, and 10 hours after drug administration. The area under the curve from time 0 to the last sampling time point (AUC(last)) for sulindac sulfide was obtained. The AUC(last) of sulindac sulfide was significantly higher in patients with variant-type homozygotes of FMO3 (rs909530) than those with ancestral alleles or heterozygotes. FMO3 (rs2266780) was in complete linkage disequilibrium with FMO6 (rs7885012), and there was marginal significance between the genotypes (P = 0.049). From multiple linear regression models, FMO3 (rs909530) was found to have significant influence on the AUClast of sulindac sulfide after adjusting for gestational age, weight, and all studied SNPs. The predictive contribution of rs909530 to the variability of sulindac sulfide AUC(last) was 27.0%. In conclusion, the results of this study could help clinicians predict the efficacies and side effects of sulindac in the development of individualized treatment of patients with preterm labor.
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Affiliation(s)
- Sunny Park
- College of Pharmacy and Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea (S.P., N.R.L., K.E.L., J.Y.P., H.S.G.); and Department of Obstetrics and Gynecology, Ewha Womans University School of Medicine, Seoul, Korea (Y.J.K.)
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Kim HO, Lee KE, Park HY, Lee NR, Oh BR, Chang BC, Gwak HS. Effects of torsemide on pharmacodynamics and pharmacokinetics of warfarin in humans and rats. ACTA ACUST UNITED AC 2013; 65:1195-203. [PMID: 23837587 DOI: 10.1111/jphp.12084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 04/16/2013] [Indexed: 11/30/2022]
Abstract
OBJECTIVES This study aimed to evaluate the effects of torsemide on warfarin therapy in humans and rats. METHODS For the animal study, rats were orally dosed with warfarin (0.13 mg/kg, control group) or warfarin (0.13 mg/kg) with torsemide (2 mg/kg, low dose group and 10 mg/kg, high dose group). The pharmacodynamic response of warfarin was assessed by measuring the international normalized ratio (INR) for 5 consecutive days following drug administration. For the human study, 191 patients on warfarin with mechanical heart valves were followed up retrospectively. The stable dose was calculated as the mean dose in INR levels of 2-3 for 3 consecutive times. KEY FINDINGS In the animal study, the INR, maximum plasma concentration (Cmax ) and area under the plasma drug concentration-time curve (AUC0-∞ ) of (S)-warfarin in the high dose group were significantly higher than in other groups (P < 0.05). Compared with the control group, Cmax and AUC0-∞ of (R)-warfarin in the high and low dose groups were higher, whereas the volume of distribution/bioavailability and clearance/bioavailability were significantly lower (P < 0.05). In the univariate analysis of the clinical study, diuretics significantly lowered stable warfarin doses (P = 0.016) (5.07 ± 1.78 mg/day vs 5.77 ± 1.81 mg/day). After controlling confounding variables, the effects of diuretics were found to lower the warfarin dose by 0.464 mg. CONCLUSIONS It was concluded that warfarin dose needs to be lowered when it is used concomitantly with diuretics.
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Affiliation(s)
- Han Oll Kim
- College of Pharmacy & Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
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16
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Choi AY, Kim CT, Park HY, Kim HO, Lee NR, Lee KE, Gwak HS. Pharmacokinetic characteristics of capsaicin-loaded nanoemulsions fabricated with alginate and chitosan. J Agric Food Chem 2013; 61:2096-2102. [PMID: 23414078 DOI: 10.1021/jf3052708] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Nanotechnologies are being employed to enhance the stability and oral bioavailability of lipophilic substances, such as capsaicin. This study aimed to examine the pharmacokinetic properties of the formulated capsaicin-loaded nanoemulsions. A pharmacokinetic study was carried out using double-layer nanoemulsions fabricated with alginate and chitosan polymers and triple-layer nanoemulsions fabricated with chitosan/alginate polymers. Capsaicin nanoemulsions and capsaicin control (oleoresin capsicum) were administered to the rat at a dose of 10 mg/kg. A statistically significant difference was found in the area under the curve from time zero to time infinity (AUCinf) among formulations (p < 0.01). In comparison to the control group, the relative bioavailability of formulated nanoemulsions was up to 131.7. The AUCinf increased in a nano-size-dependent manner; as nano size decreased, AUCinf increased. IN comparison to the double-layer nanoemulsions, the triple-layer nanoemulsion showed a significantly increased volume of distribution, resulting in the increased clearance and decreased AUCinf. It was concluded that the formulated nanoemulsions could significantly enhance the bioavailabilty of capsaicin.
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Affiliation(s)
- Ah Young Choi
- College of Pharmacy and Division of Life and Pharmaceutical Sciences, Ewha Womans University , 52 Ewhayeodae-gil Seodaemun-gu, Seoul 120-750, Korea
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Lee YS, Park CO, Noh JY, Jin S, Lee NR, Noh S, Lee JH, Lee KH. Knockdown of paraoxonase 1 expression influences the ageing of human dermal microvascular endothelial cells. Exp Dermatol 2013; 21:682-7. [PMID: 22897574 DOI: 10.1111/j.1600-0625.2012.01555.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Skin is one of the most commonly studied tissues for microcirculation research owing to its close correlation of cutaneous vascular function, ageing and age-related cardiovascular events. To elucidate proteins that determine this correlation between endothelial cell function and ageing in the vascular environment of the skin, we performed a proteomic analysis of plasma samples from six donors in their 20s (young) and six donors in their 60s (old). Among identified proteins, paraoxonase 1 (PON1) was selected in this study. To elucidate the role of PON1 on skin ageing and determine how it controls cellular senescence, the characteristics of PON1 in human dermal microvascular endothelial cells (HDMECs) were determined. When the expression of endogenous PON1 was knocked-down by small interfering RNA (siRNA) targeting PON1, HDMECs showed characteristic features of cellular senescence such as increases in senescence-associated β-galactosidase stained cells and enlarged and flattened cell morphology. At 48 h post-transfection, the protein expression of p16 in PON1 siRNA-treated HDMECs was higher than that in scrambled siRNA-treated HDMECs. In addition, the expressions of moesin and rho GTP dissociation inhibitor, additional age-related candidate biomarkers, were decreased by PON1 knock-down in HDMECs. In conclusion, these results suggest that PON1 functions as an ageing-related protein and plays an important role in the cellular senescence of HDMECs.
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Affiliation(s)
- Yun Sun Lee
- Department of Dermatology, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
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Park CO, Noh S, Jin S, Lee NR, Lee YS, Lee H, Lee J, Lee KH. Insight into newly discovered innate immune modulation in atopic dermatitis. Exp Dermatol 2012; 22:6-9. [PMID: 23088736 DOI: 10.1111/exd.12034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2012] [Indexed: 12/22/2022]
Abstract
Atopic dermatitis (AD) is a highly pruritic, chronic relapsing inflammatory skin disease characterized by innate and adaptive immune reactions. In AD, innate immune mechanisms such as pattern recognition receptors and antimicrobial peptides have been investigated in detail, but recently, epidermis-derived cytokines, namely thymic stromal lymphopoietin (TSLP), IL-25 and IL-33, were shown to participate in innate immune reactions independently of adaptive immunity. In addition to conventional innate cells, such as mast cells, basophils and eosinophils, Th2 cytokine-producing invariant natural killer T (iNKT) cells, innate lymphoid cells (ILCs) and Th17/Th22 cytokine-producing innate cells - iNKT cells and natural killer (NK)-like cells - can participate in innate immune modulation in AD. Accordingly, early control of innate immune responses in AD before activation of adaptive immune responses by conventional T and B cells that perpetuate chronic skin inflammation may adequately alleviate acute exacerbations of AD. Therefore, we hypothesized that select immune modulators targeting the innate immune response could potentially be used for individualized treatment of AD.
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Affiliation(s)
- Chang Ook Park
- Department of Dermatology, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
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Yhim HY, Kwon DH, Lee NR, Song EK, Yim CY, Kwak JY. Linear IgA bullous dermatosis following autologous PBSC transplantation in a patient with non-Hodgkin's lymphoma. Bone Marrow Transplant 2010; 46:156-8. [DOI: 10.1038/bmt.2010.73] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
Formation of biofilm is known to be strongly dependent on substrates including topography, materials, and chemical treatment. In this study, a variety of substrates are tested for understanding biofilm formation. Sheets of aluminum, steel, rubber, and polypropylene have been used to examine their effects on formation of Pseudomonas aeruginosa biofilm. In particular, the morphological variation, transition, and adhesiveness of biofilm were investigated through local measurement by atomic force microscopy (AFM). Mechanism of removing biofilm from adhering to substrate is also analyzed, thus the understanding of the mechanism can be potentially useful to prevent the biofilm formation. The results reveal that formation of biofilm can remain on rough surface regardless of substrates in hot water, which may easily induce extra-polymeric substances detachment from bacterial surface. By probing using AFM, local force-distance characterization of extra-cellular materials extracted from the bacteria can exhibit the progress of the biofilm formation and functional complexities.
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Affiliation(s)
- Y J Oh
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
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21
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Lee NR, Kwon DY, Min KH. Cloning and sequence analyses of a 2,3-dihydroxybiphenyl 1,2-dioxygenase gene ( bphC) from Comamonas sp. SMN4 for phylogenetic and structural analysis. J Ind Microbiol Biotechnol 2003; 30:245-50. [PMID: 12761654 DOI: 10.1007/s10295-003-0039-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2001] [Accepted: 01/22/2003] [Indexed: 11/25/2022]
Abstract
A genomic library of biphenyl-degrading Comamonas sp. SMN4 for isolating fragments containing the 2,3-dihydroxybiphenyl 1,2-dioxygenase (23DBDO) gene was constructed. The smallest subclone (pNPX9) encoding 23DBDO activity was sequenced and analyzed. The C-terminal domain of 23DBDO from Comamonas sp. SMN4 had five catalytically essential residues and was more highly conserved than the N-terminal domain. Phylogenetic and structural relationships of 23DBDO from Comamonas sp. SMN4 were analyzed.
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Affiliation(s)
- N R Lee
- Korea Food Research Institute, Baekhyon, Poondang, Songnam, 463-746, Kyongki-do, Korea
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Chung YS, Lee NR, Cheon CL, Song ES, Lee MS, Kim Y, Min KH. Molecular cloning of the nahG gene encoding salicylate hydroxylase from Pseudomonas fluorescens. Mol Cells 2001; 11:105-9. [PMID: 11266111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
A gene encoding the salicylate hydroxylase was cloned from the genomic DNA of Pseudomonas fluorescens SME11. The DNA fragment containing the nahG gene for the salicylate hydroxylase was mapped with restriction endonucleases and sequenced. The DNA fragment contained an ORF of 1,305 bp encoding a polypeptide of 434 amino acid residues. The nucleotide and amino acid sequences of the salicylate hydroxylase revealed several conserved regions with those of the enzyme encoded in P. putida PpG7: The homology of the nucleotide sequence is 83% and that of amino acid sequence is 72%. We found large conserved regions of the amino acid sequence at FAD and NADH binding regions. The FAD binding site is located at the amino terminal region and a lysine residue functions as a NADH-binding site.
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Affiliation(s)
- Y S Chung
- Department of Biological Science, Sookmyung Women's University, Seoul, Korea
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Abstract
BACKGROUND About half of the world population is infected with H. pylori, but the transmission and the source of this infection are still unclear. Recently, dental plaque (DP) and saliva have been implicated as possible sources of H. pylori infection. This study was done to investigate the detection rates of H. pylori in the DP and saliva by use of PCR depending on H. pylori infection state of gastric mucosa. METHODS In 46 subjects, gastric H. pylori colonization was evaluated with CLO test, microscopy of Gram stained mucosal smear, culture and histology after modified Giemsa staining in the antrum and body, respectively. A patient was regarded as H. pylori positive if one or more of the four aforementioned test methods demonstrated H. pylori colonization of the gastric mucosa. For detection of H. pylori in the DP and saliva, PCR assay was done with ET4-U and ET4-L primers. To estimate the sensitivity and specificity of this PCR, H. pylori positivity was evaluated in the antrum and body, separately. RESULTS The sensitivity of mucosal PCR was 50.0% (27/54) and the specificity 86.8% (33/38). When a subject was regarded as H. pyloi positive, if either antrum or body mucosal H. pylori was is positive, the positive rate of mucosal PCR was 62.1% (18 subjects) in the 29 H. pylori-positive and 17.6% (3 subjects) in the 17 H. pylori-negative subjects. DP PCR was positive in 2 of 29 H. pylori-positive subjects (6.9%) and none in the 17 H. pylori-negative (0%). Saliva PCR was positive in 4 of 14 H. pylori-positive subjects (28.6%) and none of 6 H. pylori-negative (0%). CONCLUSION The detection rates of H. pylori in DP and saliva by PCR were rather low, 6.9% and 28.6%, respectively, and these rates might have been underestimated by low sensitivity of the PCR method used in this study. However, the results that H. pylori was found in the DP and saliva suggest that the oral cavity can perform a role as a reservoir of H. pylori in Korea.
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Affiliation(s)
- N Kim
- Department of Internal Medicine, Kangnam General Hospital, Public Corporation, Seoul, Korea
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Abstract
PURPOSE The purpose of this study was to investigate the success of a staged surgical reconstruction of the upper airway for treatment of obstructive sleep apnea syndrome. PATIENTS AND METHODS Thirty-five patients with obstructive sleep apnea syndrome documented by nocturnal polysomnography were treated surgically with a staged protocol for reconstruction of the upper airway. All patients were evaluated preoperatively by a history and physical examination, including fiberoptic nasopharyngoscopy, oropharyngoscopy, and hypopharyngoscopy; cephalometric analysis; and laboratory polysomnography. All patients included were diagnosed with type II obstruction, with collapse at the oropharyngeal and hypopharyngeal levels. Stage I reconstruction consisted of uvulopalatopharyngoplasty (UPPP) by the Fujita method and anterior mandibular osteotomy (AMO) or inferior sagittal osteotomy (ISO) with genioglossus muscle advancement. If stage I was unsuccessful, patients were advanced to stage II and stage III, if necessary. Stage II reconstruction consisted of bimaxillary advancement with rigid fixation. Stage III reconstruction consisted of hyoid myotomy and advancement. RESULTS All patients underwent follow-up nocturnal polysomnography 4 to 6 months after the last surgical procedure. Most patients responded positively to stage I reconstruction (respiratory disturbance index [RDI] < 20, with O2 saturation 95+%). Twenty-four patients (69%) had postoperative RDIs of 20 or less. Of these, 11 patients (31%) had an RDI of five or fewer; seven patients (20%) had an RDI between 6 and 10, and six patients (17%) had an RDI between 10 and 20. The mean preoperative RDI was 53, and the mean postoperative RDI was 19. Of the three patients who elected to proceed to stage II reconstruction, all had a postoperative RDI of 10 or less (two patients [67%] had an RDI of 5 or less, and one patient [33%] had an RDI of 6 to 10). CONCLUSION This study showed that properly selected patients with obstructive sleep apnea syndrome benefit from a staged reconstruction of the upper airway.
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Affiliation(s)
- N R Lee
- Medical College of Virginia/Virginia Commonwealth University, Richmond, USA.
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Semple-Rowland SL, Lee NR, Van Hooser JP, Palczewski K, Baehr W. A null mutation in the photoreceptor guanylate cyclase gene causes the retinal degeneration chicken phenotype. Proc Natl Acad Sci U S A 1998; 95:1271-6. [PMID: 9448321 PMCID: PMC18742 DOI: 10.1073/pnas.95.3.1271] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/1997] [Accepted: 11/20/1997] [Indexed: 02/05/2023] Open
Abstract
The retinas of the retinal degeneration (rd) chicken are fully developed and possess normal morphology at hatching but fail to respond to light stimulation. Analyses of retinal cGMP, the internal messenger of phototransduction, show that the amount of cGMP in predegenerate, fully developed rd/rd photoreceptors is 5-10 times less than that seen in normal photoreceptor cells. We show that the low levels of cGMP in rd chicken retina are a consequence of a null mutation in the photoreceptor guanylate cyclase (GC1) gene. Thus, the rd chicken is a model for human Leber's congenital amaurosis. Absence of GC1 in rd retina prevents phototransduction and affects survival of rods and cones but does not interfere with normal photoreceptor development.
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Affiliation(s)
- S L Semple-Rowland
- University of Florida, Department of Neuroscience, College of Medicine and Brain Institute, Gainesville, FL 32610, USA.
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Abstract
BACKGROUND This 1-year randomized trial tested the efficacy of behavioral techniques for increasing mammography referrals by primary care physicians in small, community practices. METHODS Sixty-one practices were randomly assigned to one of three conditions: (1) education-only control, (2) education plus cue enhancement using mammography chart stickers, and (3) education plus cue enhancement plus feedback and token rewards. Quarterly chart audits of a defined sample (N = 11,716) of women patients 50 years of age or older were conducted to document mammography referrals, completions, and compliance. RESULTS Referral and completion rates increased from baseline to first quarter and gradually declined thereafter. Overall, these rates were higher in the cuing conditions than in the control condition. In contrast, compliance rates in both experimental conditions increased over the year while remaining static in the control condition, demonstrating a strong and continuing effect for cue enhancement. Compliance increases were greatest for physicians who were older, nonwhite, with a second speciality, in solo practice, not members of the AMA, not residency trained, and not board certified. CONCLUSIONS Chart stickers can significantly increase mammography utilization in small, community practices. These practices are an efficient route to reaching large numbers of older women in need of mammography screening.
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Affiliation(s)
- K E Grady
- Massachusetts Institute of Behavioral Medicine, Inc., East Longmeadow, Massachusetts 01028, USA
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Lee NR, Hwang MO, Jung GH, Kim YS, Min KH. Physical structure and expression of alkBA encoding alkane hydroxylase and rubredoxin reductase from Pseudomonas maltophilia. Biochem Biophys Res Commun 1996; 218:17-21. [PMID: 8573125 DOI: 10.1006/bbrc.1996.0004] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The structural genes of the Pseudomonas maltophilia alk system, which are localized on the OCT plasmid were cloned as a 4.2-kilobase pair Hind III fragment. This fragment contains sequences for alkane hydroxylase gene (alkB) and rubredoxin reductase gene (alkA), respectively. The alkB gene encodes a 373-amino acid polypeptide (47.4 kD) that can be expressed at high levels in Pseudomonas and Escherichia coli. The alkBA genes were complemented with alkane hydroxylation in both bacteria. This result shows that alkBA gene is essential for alkane hydroxylation since chromosomal loci have been encoded for other enzymes involved in fatty acid oxidation.
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Affiliation(s)
- N R Lee
- Department of Biology, Sookmyung Women's University, Seoul, Korea
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Abstract
The pineal gland synthesizes its hormone melatonin (O-methyl-N-acetylserotonin) from serotonin. Acetyl-CoA: serotonin N-acetyltransferase (SNAT), the enzyme that catalyzes the committed step in this biosynthesis, is largely restricted to the pineal gland and is regulated by adrenergic and circadian mechanisms. Another enzyme, acetyl-CoA: arylamine N-acetyltransferase (ANAT), having an apparently similar activity, is also present in the pineal. This enzyme, however, is not rhythmically regulated. SNAT activity of cultured chick pineal cells was obtained without ANAT after ammonium sulfate precipitation. ANAT activity was retained without SNAT activity after pre-incubation at 37 degrees C. Thus, each enzyme could be examined independently. Overlap in substrate specificity between the two enzymes was minimal. Kinetic analysis of the separated enzyme activities revealed that while SNAT operates via a random or ordered bi bi mechanism, ANAT catalysis occurs through a ping pong bi bi mechanism with substrate inhibition by acetyl-CoA. By size-exclusion chromatography, ANAT was confirmed to be 30-35 kDa, and SNAT was estimated at 15-20 kDa. Taken together, these results indicate that the two enzymes differ in their structure, reactivity, stability, and mechanism of catalysis.
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Affiliation(s)
- M S Wolfe
- Section on Biochemical Pharmacology, National Institute of Mental Health, Bethesda, MD 20892
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Grady KE, Reisine ST, Fifield J, Lee NR, McVay J, Kelsey ME. The impact of Hurricane Hugo and the San Francisco earthquake on a sample of people with rheumatoid arthritis. Arthritis Care Res 1991; 4:106-10. [PMID: 11188590 DOI: 10.1002/art.1790040208] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The health effects of two natural disasters on 32 people with rheumatoid arthritis (RA) were assessed during the second-year wave of interviews in an ongoing 3-year study. Although the severity of Hurricane Hugo exceeded that of the San Francisco earthquake, no significant differences in health impacts were found. Both groups reported significantly increased ratings of RA activity, pain, and depression compared with ratings during the first year. However, comparison with the rest of the sample (n = 767) showed that increases in disease activity and pain were a general phenomenon but that the increase in depression was unique to the disaster subsample. Physician health status assessments also indicated that those who experienced the disaster were more likely to be classified in later stages of the disease subsequent to the disaster and were more likely to experience flares. These results suggest that people with RA may constitute a special high-risk population for adverse health effects after natural disasters.
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Affiliation(s)
- K E Grady
- Massachusetts Institute of Behavioral Medicine, Inc., 1145 Main Street, Springfield, MA 01103, USA
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Campbell RL, Lee NR, Shamaskin RG, Priest JH, Rah KH. Evaluation of rebreathing in various modifications of the Mapleson-D system. J Oral Maxillofac Surg 1985; 43:574-9. [PMID: 3925098 DOI: 10.1016/0278-2391(85)90123-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Several modifications of the Bain system for nitrous oxide analgesia or general anesthesia were tested for rebreathing and retention of CO2. The classic Bain circuit causes the most rebreathing as measured by the fractional concentration of CO2 in a sample of inspired gas (FICO2), but stimulation of the respiratory system seems to allow near normal end tidal CO2 and arterial CO2 tensions. The most predictable systems that have the least amount of rebreathing are those that have the least dead space.
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Rah KH, Lee NR, McDougle ML, Campbell RL. Carbon dioxide absorption system with a simple modification of the Bain circuit. Anesth Prog 1982; 29:135-7. [PMID: 6819788 PMCID: PMC2515581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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