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Ahn S, Lee Y, Park J, Lee J, Shin SY, Lee YH, Koh D, Lim Y. Synthetic Diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylates Induce Apoptosis. Med Chem 2018; 14:851-862. [PMID: 29669502 DOI: 10.2174/1573406414666180418143048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 03/07/2018] [Accepted: 04/12/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND The Hantzsch ester, diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5- dicarboxylate, has been used as a hydride donor and its various biological effects have been reported. To identify chemotherapeutic agents with apoptotic effects, 21 diethyl 2,6-dimethyl-1,4- dihydropyridine-3,5-dicarboxylates were designed and synthesized; they have not been reported as apoptosis inducers thus far. Their structure-cytotoxicity relationships were investigated. Further biological experiments were performed on the title compound. METHODS The cytotoxicities of the current synthetic compounds were measured using a clonogenic assay in HCT116 human colon cancer cells. An annexin V staining assay was used to confirm if the title compound induced apoptosis. To identify the synthetic compounds, Nuclear Magnetic Resonance (NMR) spectroscopy and high-resolution mass spectrometry (HR-MS) were conducted. As molecular symmetry was observed in the NMR spectroscopic data, the three dimensional structures were determined from ab initio calculations and X-ray crystallography. RESULTS The results obtained from NMR spectroscopy, ab initio calculations, and X-ray crystallography revealed that the diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate derivatives synthesized in this research have symmetric structures. The cytotoxicities of the 21 derivatives were tested in the HCT116 human colon cancer cell lines, and their half-maximal cell growth inhibitory concentrations ranged between 16.29 and 68.88 µM. Structure-cytotoxicity relationships demonstrated that bulky substitutions were preferred, para-positioned substituents tended to have better cytotoxic values, and the polarity may have a function as well. The cytotoxicity of the title compound in HCT116 colon cancer cells was mediated through apoptotic cell death. CONCLUSION To obtain chemotherapeutic agents that induce apoptosis, 21 diethyl 2,6-dimethyl- 1,4-dihydropyridine-3,5-dicarboxylates were designed and synthesized. NMR spectroscopy, ab initio calculations, and X-ray crystallography demonstrated that the diethyl 2,6-dimethyl-1,4- dihydropyridine-3,5-dicarboxylate derivatives synthesized in this research had symmetric structures. Even if the half-maximal cell growth inhibitory concentrations of the 21 derivatives did not show dramatic inhibitory activity against HCT116 human colon cancer cells, small changes in the structure affected the anticancer activities. Treatment with diethyl 4-(4-chlorophenyl)-2,6- dimethyl-1,4-dihydropyridine-3,5-dicarboxylate substantially reduced the cell viability and the cytotoxicity against HCT116 colon cancer cells was mediated through apoptotic cell death. As the ability of diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylates to induce apoptosis has not been previously reported, we have now reported their design, synthesis, cytotoxicity, and structureactivity relationships.
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Abstract
OBJECTIVE This study aimed to evaluate whether urinary monocyte chemoattractant protein-1 (MCP-1) could serve as a biomarker for lupus nephritis (LN). METHODS We performed a meta-analysis to examine the relationship between urinary MCP-1 level and LN in three comparisons: active LN versus inactive LN, active LN versus control, and inactive LN versus control. RESULTS Eight studies of a total of 399 patients with LN (204 with active LN, and 195 with inactive LN) and 130 controls were available for this meta-analysis. The meta-analysis revealed that the urinary MCP-1 level was significantly higher in the active-LN group than in the inactive-LN group (standard mean difference [SMD] = 1.883, 95 % confidence interval [CI] = 0.811-2.954, p = 0.001). The meta-analysis showed that the urinary MCP-1 level was significantly higher in the active-LN group than in the control group (SMD = 3.085, 95 % CI = 1.684-4.485, p = 1.6 × 10-5). Furthermore, stratification by ethnicity showed significantly elevated urinary MCP-1 levels in the active-LN group in Caucasian, Asian, and Egyptian populations (SMD = 2.408, 95 % CI = 1.711-3.105, p < 1.0 × 10-8; SMD = 1.020, 95 % CI = 0.623-2.153, p = 4.6 × 10-7; and SMD = 7.370, 95 % CI = 1.467-2.157, p = 5.9 × 10-5, respectively). The meta-analysis indicated that the urinary MCP-1 level was also significantly higher in the inactive-LN group than in the control group (SMD = 1.812, 95 % CI = 0.628-2.996, p = 0.003). CONCLUSIONS The meta-analysis demonstrated that urinary MCP-1 was significantly higher in patients with active LN than in those with inactive LN and control subjects, and the patients with inactive LN showed significantly higher urinary MCP-1 levels than the controls.
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Lee YH, Song GG. Association of circulating resistin, leptin, adiponectin and visfatin levels with Behçet disease: a meta-analysis. Clin Exp Dermatol 2018; 43:536-545. [PMID: 29356069 DOI: 10.1111/ced.13383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Behçet disease (BD) is a chronic inflammatory disease. Adipokines are synthesized in adipose tissue, and have been reported to play important roles in the pathogenesis of autoimmune and inflammatory diseases, including BD. AIM To evaluate the relationship between circulating blood adipokine levels and BD. METHODS We conducted a meta-analysis of papers reporting on serum/plasma resistin, leptin, adiponectin and visfatin levels in patients with BD and in healthy controls (HCs). We identified 82 relevant studies using electronic and manual search methods, and selected 16 studies for full-text review based on the title and abstract. Two of these were later excluded (one was a review, one had no data), leaving 14 articles that met the inclusion criteria for this meta-analysis. RESULTS The 14 included studies assessed 637 patients with BD and 520 HCs. Compared with the HCs, the BD group had significantly higher levels of leptin [standardized mean difference (SMD) = 0.68, 95% CI 0.15-1.21, P = 0.01]. Levels of resistin (SMD = 0.51, 95% CI 0.92-0.918, P = 0.02) and adiponectin (SMD = 0.31, 95% CI 0.06-0.56, P = 0.02) were significantly higher in the BD group after adjustment for age, sex and body mass index (BMI), but not without such adjustment (resistin: (SMD = 0.38, 95% CI -0.18 to 0.93, P = 0.19; adiponectin: SMD = -0.59, 95% CI -2.23 to 1.06, P = 0.48). A significantly lower visfatin level was found in the BD group with adjustment (SMD = -1.70, 95% CI -2.14 to -1.25, P < 0.001) but not without adjustment (SMD = 0.31, 95% CI -0.21 to 0.82, P = 0.24). CONCLUSIONS Our meta-analysis revealed significantly higher circulating resistin, leptin and adiponectin levels and lower visfatin levels in patients with BD than in HCs, indicating that adipokines probably play an important role in BD pathogenesis.
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Lee YH, Song GG. Association between circulating 25-hydroxyvitamin D levels and psoriasis, and correlation with disease severity: a meta-analysis. Clin Exp Dermatol 2018; 43:529-535. [PMID: 29341195 DOI: 10.1111/ced.13381] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Psoriasis is a chronic, autoimmune, inflammatory skin disorder. 25-hydroxy vitamin D [25(OH)D] deficiency may contribute to the pathogenesis of psoriasis through reduction in antiproliferative, anti-inflammatory and antiangiogenic activities. AIM To evaluate the relationship between circulating 25(OH)D levels and psoriasis, and to determine the correlation between serum/plasma 25(OH)D levels and psoriasis severity. METHODS We performed a meta-analysis to compare serum/plasma 25(OH)D levels between patients with psoriasis and healthy controls (HCs), and to determine the correlation coefficients between circulating 25(OH)D levels and psoriasis severity as assessed by Psoriasis Area and Severity Index (PASI). RESULTS Ten articles with a total of 571 patients with psoriasis and 496 HCs were included. The 25(OH)D level was significantly lower in the psoriasis group than in the HC group. Subgroup analysis by sample size revealed a significantly lower level of 25(OH)D in the psoriasis group for large (N > 80) but not for small (N < 80) sample sizes. Stratification by adjustment for age and/or sex or sample type revealed a significantly lower 25(OH)D level in the psoriasis group after adjustment for serum but not after nonadjustment for plasma. Meta-analysis of the correlation coefficients revealed a small but statistically significant positive correlation between circulating 25(OH)D levels and PASI. CONCLUSIONS This meta-analysis demonstrated that circulating 25(OH)D levels are lower in patients with psoriasis, and that a small but statistically significant negative correlation exists between 25(OH)D levels and psoriasis severity.
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Kim DH, Lee YH, Cha D, Kim SH. Transoral robotic surgery in Eagle's syndrome: our experience on four patients. ACTA OTORHINOLARYNGOLOGICA ITALICA 2018; 37:454-457. [PMID: 29327731 PMCID: PMC5782421 DOI: 10.14639/0392-100x-1502] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/11/2017] [Indexed: 11/23/2022]
Abstract
Eagle's syndrome is characterised by focal pain in the tonsillar fossa on wide mouth opening or head rotation and various accompanying symptoms. While the syndrome is difficult to diagnose, shortening the styloid process via a transoral or transcervical surgical approach has been shown to be the most effective treatment. The aim of this article was to document our experience with a transoral robotic approach to treat Eagle's syndrome and to present the outcomes of four patients. We reviewed the cases of four patients with Eagle's syndrome who underwent transoral robotic surgery (TORS). The average age of patients was 53.75 years, and there were equal numbers of males and females. The styloid processes were reconstructed in 3D from the preoperative CT scans and were measured as an average of 4.18 cm (range 3.3-5.1). The mean set-up time and operation times were less than 10 minutes and 30 minutes, respectively. All patients were completely relieved of symptoms, and were able to restart an oral diet on post-operative day 1. No patient suffered intraoperative or postoperative complication, including cranial nerve injury, haemorrhage, or deep neck infection. In our experience, transoral excision of the styloid process via a robotic approach can be considered as a feasible treatment option for Eagle's syndrome.
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Yang HJ, Kim MJ, Kang HJ, Lee HY, Park YM, Lee YH, Kang YG, Hwa GP, Kang YS, Jung YM, Lee NK, Park KH. Immunomodulating Properties of Polygonum multiflorum Extracts on Cyclophosphamide-induced Immunosuppression Model. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Bae SC, Lee YH. Circulating macrophage migration inhibitory factor levels and its polymorphisms in systemic lupus erythematosus: A meta-analysis. ACTA ACUST UNITED AC 2017; 63:74-79. [PMID: 29096759 DOI: 10.14715/cmb/2017.63.10.12] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 10/12/2017] [Indexed: 11/18/2022]
Abstract
The present study aimed to systemically review the evidence regarding the relationship between circulating macrophage migration inhibitory factor (MIF) levels and systemic lupus erythematosus (SLE), as well as the associations between several polymorphisms in the MIF gene and SLE susceptibility. We performed a meta-analysis of serum/plasma levels of MIF in SLE patients and controls and evaluated evidence of associations between the MIF -173 C/G allele and -794CATT5-8 polymorphisms and the associated risk for SLE. Nine studies were included in this meta-analysis. Meta-analysis indicated that MIF levels were significantly higher in the SLE group than in the control group (SMD = 1.154, 95% CI = 0.369-1.938, P = 0.004). Stratification by ethnicity showed significantly higher MIF levels in the SLE group representing Asian populations (SMD = 1.911, 95% CI = 0.871-2.951, P < 0.001). MIF levels were significantly higher in the SLE group than in the control group in the age-and/or sex matched population, but not in the unmatched population (SMD = 1.236, 95% CI = 0.579-1.893, P < 0.001; SMD = 1.118, 95% CI = -0.027-2.263, P = 0.056). However, results of the meta-analysis showed no association between SLE and the MIF -173 C allele, the -794CATT7 allele, and the -794CATT7-MIF-173C haplotype with high heterogeneity. Our meta-analysis demonstrated significantly higher circulating MIF levels in patients with SLE, but no evidence of associations between MIF -173 C/G and -794CATT5-8 polymorphisms and SLE susceptibility.
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Lee YH, Kim YI, Oh YK, Ahmadi F, Kwak WS. Yield survey and nutritional evaluation of garlic stalk for ruminant feed. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2017; 59:22. [PMID: 29085659 PMCID: PMC5651561 DOI: 10.1186/s40781-017-0147-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 08/13/2017] [Indexed: 12/05/2022]
Abstract
Background Very limited information exists on the ruminal degradation kinetics of nutrients in garlic stalk. The present study aimed to survey the annual yield of garlic stalk in Korea and determine its feed-nutritive value for ruminants. Methods In Experiment 1, garlic stalk was incubated in situ in the rumen of two Hanwoo steers (360 ± 15 kg body weight) and removed after 12, 24, or 48 h to determine the ruminal degradation kinetics of DM and NDF. Rice straw was also included for comparison. In Experiment 2, In Experiment 2, six male Corriedale sheep were randomized to two dietary treatments to determine the apparent digestibility of nutrients in garlic stalk. Diets included a control ration without garlic stalk (60% concentrate mix +40% ryegrass) or a treatment ration (70% control diet +30% garlic stalk). Results The Korean national yield of garlic stalk (sun-dried basis) in 2016 was estimated to be 31,910 tons, with the southern coastal regions producing the highest quantity. Compared with rice straw, garlic stalk had lower NDF, higher ADF, and greater effective degradabilities of DM and NDF, resulting in a greater TDN value (56.3%), which was higher than that obtained for rice straw (43.7%). Conclusion These results provide basic information on the ruminal DM and NDF degradation kinetics of garlic stalk, which would be helpful for the efficient utilization of this by-product in ruminant diets.
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Zhang X, Lee YH, Bell BA, Leong PHW, Rudolph T, Eggleton BJ, Xiong C. Indistinguishable heralded single photon generation via relative temporal multiplexing of two sources. OPTICS EXPRESS 2017; 25:26067-26075. [PMID: 29041268 DOI: 10.1364/oe.25.026067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 10/04/2017] [Indexed: 06/07/2023]
Abstract
Generating N single photons simultaneously is a formidable challenge due to the lack of deterministic single photon sources. Recent work [New J. Phys. 19, 063013 (2017] has proposed a relative multiplexing scheme that can enhance the N single photons probability with a minimum of active switching resources. We experimentally demonstrate relative temporal multiplexing on two photon sources with a 90% additional enhancement over the standard temporal multiplexing scheme demonstrated previously. 88 ± 11% visibility of Hong-Ou-Mandel quantum interference verifies the indistinguishability of the heralded single photons after the synchronization. This proof-of-principle demonstration points out the potential significance of the relative multiplexing scheme for large-scale photonic quantum information processing.
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Lee YH, Seo YH, Kim JH, Choi SJ, Ji JD, Song GG. Associations between SLC2A9 polymorphisms and gout susceptibility : A meta-analysis. Z Rheumatol 2017; 76:64-70. [PMID: 27052299 DOI: 10.1007/s00393-016-0070-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The aim of this study was to determine whether polymorphisms in solute carrier family 2 and facilitated glucose transporter member 9 (SLC2A9) are associated with susceptibility to gout. METHODS A meta-analysis was conducted on associations between the rs12510549, rs16890979, and rs1014290 polymorphisms of SLC2A9 and gout susceptibility using fixed and random effects models. RESULTS Eleven comparative studies comprising 1,472 patients and 3,269 controls from Caucasian and Asian populations were included in this meta-analysis. The meta-analysis identified a significant negative association between gout and allele 2 (minor) of the rs12510549 polymorphism in the overall population (OR = 0.641, 95 % CI = 0.540-0.761, P = 4.1 × 10-7). Stratification by ethnicity identified a significant negative association between this polymorphism and gout in Caucasians (OR = 0.647, 95 % CI = 0.542-0.771, P = 1.2 × 10-6) but not in Asians (OR = 0.515, 95 % CI = 0.214-1.236, P = 0.137). The meta-analysis showed a significant negative association between gout and allele 2 of the rs16890979 polymorphism in all study subjects (OR = 0.229, 95 % CI = 0.084-0.628, P = 0.004). Stratification by ethnicity identified a significant negative association between this polymorphism and gout in Caucasians (OR = 0.469, 95 % CI = 0.317-0.695, P = 1.6 × 10-6) and in Asians (OR = 0.192, 95 % CI = 0.072-0.513, P = 0.001). A significant negative association was found between allele 2 of the rs1014290 polymorphism and gout susceptibility in Asians (OR = 0.597, 95 % CI = 0.478-0.746, P = 5.4 × 10-6) but not in Caucasians (OR = 0.778, 95 % CI = 0.595-1.043, P = 0.095). CONCLUSIONS This meta-analysis shows that the rs12510549, rs16890979, and rs1014290 polymorphisms of SLC2A9 protect against the development of gout in Caucasians and/or Asians.
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Park YM, Lee YJ, Hussain Z, Lee YH, Park H. The effects and mechanism of action of methane on ileal motor function. Neurogastroenterol Motil 2017; 29. [PMID: 28417537 DOI: 10.1111/nmo.13077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 03/02/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Methane has been associated with constipation-predominant irritable bowel syndrome, slowing intestinal transit time by augmenting contractile activity. However, the precise mechanism underlying this effect remains unclear. Therefore, we investigated the mechanisms underlying the effect of methane on contractile activity, and whether such effects are mediated by nerve impulses or muscular contraction. METHODS We connected guinea pig ileal muscle strips to a force/tension transducer and measured amplitudes of contraction in response to electrical field stimulation (EFS; 1, 2, 8, 16 Hz) following methane infusion in the presence of tetradotoxin (TTX), atropine, guanethidine, or GR 113808. We then performed calcium imaging using Oregon Green 488 BAPTA-1 AM in order to visualize changes in calcium fluorescence in response to EFS following methane infusion in the presence of TTX, atropine, or a high K+ solution. KEY RESULTS Methane significantly increased amplitudes of contraction (P<.05), while treatment with TTX abolished such contraction. Methane-induced increases in amplitude were inhibited when lower-frequency (1, 2 Hz) EFS was applied following atropine infusion (P<.05). Neither guanethidine nor GR 113808 significantly altered contraction amplitudes. Methane significantly increased calcium fluorescence, while this increase was attenuated following atropine infusion (P<.05). Although calcium fluorescence was increased by the high K+ solution under pretreatment with TTX, the intensity of fluorescence remained unchanged after methane infusion. CONCLUSIONS AND INFERENCES The actions of methane on the intestine are influenced by the cholinergic pathway of the enteric nervous system. Our findings support the classification of methane as a gasotransmitter.
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Lee YH, Song GG. Association between circulating leptin levels and systemic lupus erythematosus: an updated meta-analysis. Lupus 2017; 27:428-435. [PMID: 28795654 DOI: 10.1177/0961203317725587] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Objective We aimed to evaluate the relationship between circulating leptin levels and systemic lupus erythematosus (SLE). Methods MEDLINE, EMBASE, and Cochrane library databases were searched. Meta-analyses were performed comparing serum/plasma leptin levels in patients with SLE and healthy controls, and on patients with SLE in subgroups based on ethnicity, sample size, data type, and matched variables (age, sex, and/or body mass index (BMI)). Results Eighteen studies including 1333 patients with SLE and 1048 controls were ultimately selected, which showed that leptin levels were significantly higher in the SLE group than in the control group (SMD = 0.611, 95% CI = 0.275-0.947, p < 0.001). When we excluded two outlier studies because of high heterogeneity, leptin levels were also significantly higher in the SLE group than in the control group (SMD = 0.619, 95% CI = 0.431-0.807, p < 0.001). Stratification by ethnicity showed significantly elevated leptin levels in the SLE group in European, Asian, Arab, Latin American, and mixed populations. Subgroup analysis by sample size showed significantly higher leptin levels in the SLE group by small ( n ≤ 100) and large sample numbers ( n > 100) (SMD = 0.780, 95% CI = 0.445-1.115, p < 0.001; SMD = 0.495, 95% CI = 0.275-0.715, p < 0.001). Stratification by data type revealed significantly higher leptin levels in the original data and imputed data groups. Subgroup analysis adjustment revealed significantly higher leptin levels in the SLE group, regardless of adjustment for variables. Conclusions Our meta-analysis demonstrated that leptin levels were significantly higher in patients with SLE, regardless of ethnicity, sample size, data type, and matched variables.
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Lee YH, Song GG. Comparative efficacy and safety of intravenous or subcutaneous belimumab in combination with standard therapy in patients with active systemic lupus erythematosus: a Bayesian network meta-analysis of randomized controlled trials. Lupus 2017; 27:112-119. [PMID: 28592201 DOI: 10.1177/0961203317713143] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Objective In this study, we aimed to assess the relative efficacy and safety of intravenous (IV) or subcutaneous (SC) belimumab compared with those of placebo in patients with active systemic lupus erythematosus (SLE). Methods We performed a Bayesian network meta-analysis to combine the direct and indirect evidence from randomized controlled trials (RCTs) examining the efficacy and safety of belimumab 1 mg/kg and 10 mg/kg IV administration, and belimumab 200 mg SC injection, and placebo in patients with active SLE despite having received standard therapy. Results Five RCTs (3460 patients) met the inclusion criteria. The SLE Responder Index (SRI) response rate at week 52 was significantly higher in the belimumab 10 mg/kg group than in the placebo group (OR 2.63, 95% CrI 2.14-3.23). Similarly, the SRI response rates were significantly higher in the belimumab 1 mg/kg, and belimumab 200 mg SC groups than in the placebo group (OR 2.42, 95% CrI 1.90-3.09; OR 1.71, 95% CrI 1.27-2.29). Ranking probability based on surface under the cumulative ranking curve (SUCRA) indicated that belimumab 10 mg/kg had the highest probability of being the best treatment for achieving the SRI response (SUCRA = 0.9174), followed by belimumab 1 mg/kg (SUCRA = 0.7338), belimumab 200 mg SC (SUCRA = 0.3487), and placebo (SUCRA = 0.0000). However, a sensitivity test by omitting one outlier study showing low SRI response rate compared with the other three studies (11% vs. 33%, 40%, 48%) showed that belimumab 200 mg SC and belimumab 10 mg/kg had the highest probability of being the best treatment for achieving the SRI response (SUCRA = 0.7903, SUCRA = 0.7456), followed by belimumab 1 mg/kg, and placebo. The number of serious adverse events (SAEs) did not differ significantly among the four treatment options. Conclusions Belimumab at 1 and 10 mg/kg IV and belimumab 200 mg SC in combination with standard therapy was an efficacious intervention for active SLE, and was not associated with a significant risk of SAEs.
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Song W, Johnston JM, Kee FC, Lee PS, Lee YH, Chong DS, Poon KK, Lam DW, Yeung AY, Ma ES, Maw CK. Hong Kong domestic health spending: financial years 1989/90 to 2013/14. Hong Kong Med J 2017; 23 Suppl 4:2-23. [PMID: 29938660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023] Open
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Lee YH, Bae SC. Circulating leptin level in rheumatoid arthritis and its correlation with disease activity: a meta-analysis. Z Rheumatol 2017; 75:1021-1027. [PMID: 26820722 DOI: 10.1007/s00393-016-0050-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE This study aimed to evaluate the relationship between the circulating serum leptin level and rheumatoid arthritis (RA) and to establish a correlation between serum leptin levels and RA activity. METHODS We searched the PUBMED, EMBASE, and Cochrane databases. A meta-analysis was performed, comparing the serum/plasma leptin levels in patients with RA and healthy controls. Correlation coefficients between serum leptin level and either disease activity score 28 (DAS28) or C‑reactive protein (CRP) in RA patients were also examined. RESULTS Thirteen studies with a total of 648 RA patients and 426 controls were included in this meta-analysis. Circulating leptin level was significantly higher in the RA group than in the control group (SMD = 1.056, 95 % CI = 0.647-1.465, p = 4.2 × 10-7). In addition, stratification by ethnicity showed a significantly elevated leptin level in the RA group in Caucasian, Turkish, and Arab populations (SMD = 0.813, 95 % CI = 0.137-1.490, p = 0.018, SMD = 0.981, 95 % CI = 0.307-1.655, p = 0.004, and SMD = 1.469, 95 % CI = 0.443-2.495, p = 0.005 respectively). A meta-analysis of correlation coefficients showed a small but significantly positive correlation between the circulating leptin level and either DAS28 (correlation coefficient = 0.275, 95 % CI = 0.076-0.452, p = 0.007) or CRP (correlation coefficient = 0.274, 95 % CI = 0.068-0.458, p = 0.010). CONCLUSIONS Our meta-analysis demonstrated that the circulating leptin level is significantly higher in patients with RA and that a small but significantly positive correlation exists between leptin levels and RA activity.
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Bae SC, Lee YH. Association between BANK1 polymorphisms and susceptibility to autoimmune diseases: A meta-analysis. ACTA ACUST UNITED AC 2017; 63:29-35. [PMID: 28466820 DOI: 10.14715/cmb/2017.63.3.6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 05/03/2017] [Indexed: 11/18/2022]
Abstract
This study aimed to explore whether BANK1 polymorphisms are associated with susceptibility to autoimmune diseases. We conducted a meta-analysis on the associations between the BANK1 rs10516487, rs3733197, and rs17266594 polymorphisms and autoimmune diseases. Twenty-two articles with a total of 22,684 patients and 36,437 controls were included in the meta-analysis. Meta-analysis revealed a significant association between autoimmune diseases and the BANK1 rs10516487 T allele (OR = 1.161, 95% CI = 1.092-1.275, p = 1.9 × 10-6, heterogeneity p<0.001). The analysis also revealed an association between autoimmune diseases and the BANK1 rs3733197 A allele (OR = 1.178, 95% CI = 1.105-1.256, p = 4.5 × 10-7, heterogeneity p = 0.002) and the rs17266594 T allele (OR = 1.189, 95% CI = 1.073-1.315, p = 0.001, heterogeneity p<0.001). Meta-analysis by autoimmune disease type revealed an association between both systemic lupus erythematosus and systemic sclerosis and the BANK1 rs10516487 T allele (OR = 1.294, 95% CI = 1.232-1.360, p<1.0 × 10-8, heterogeneity p = 0.556; OR = 1.102, 95% CI = 1.027-1.183, p = 0.017, heterogeneity p = 0.048). However, meta-analysis failed to indicate an association between the BANK1 rs10516487 T allele and rheumatoid arthritis (RA; OR = 1.006, 95% CI = 1.956-1.058, p = 0.819). This meta-analysis demonstrates that BANK1 rs10516487, rs3733197, and rs17266594 polymorphisms are associated with susceptibility to autoimmune diseases.
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Lee YH, Bae SC. Association between circulating transforming growth factor-β1 level and polymorphisms in systemic lupus erythematosus and rheumatoid arthritis: A meta-analysis. ACTA ACUST UNITED AC 2017; 63:53-59. [PMID: 28234629 DOI: 10.14715/cmb/2017.63.1.11] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/29/2016] [Accepted: 02/09/2017] [Indexed: 11/18/2022]
Abstract
This study systemically reviewed evidence regarding the relationship between circulating blood transforming growth factor-β1 (TGF-β1) levels and systemic lupus erythematous (SLE) and rheumatoid arthritis (RA), and associations between TGF-β1 polymorphisms and susceptibility to SLE and RA. We conducted a meta-analysis on the serum/plasma TGF-β1 levels in SLE and RA patients and healthy controls, and the associations between TGF-β1 +869 T/C, +915 C/G, and -509 T/C polymorphisms and SLE or RA risk. Twenty-eight studies were considered in this meta-analysis. Circulating TGF-β1 levels were significantly lower in the SLE group than in controls (SMD = -1.164, 95% CI = -2.257 - -0.070, P = 0.037). Serum/plasma TGF-β1 levels were not significantly different between RA and control groups (SMD = 0.699, 95% CI = -0.379 - 1.717, p = 0.211). No association between TGF-β1 +869 T/C polymorphism and SLE was found. However, meta-analysis showed an association between the TGF-β1 +869 T allele and RA in all subjects (OR = 1.282, 95% CI = 1.118-1.470, P = 3.8 x 10-4). Analysis after stratification by ethnicity indicated that the T allele was significantly associated with RA in Asians and Arabs (OR = 1.429, 95% CI = 1.179-1.733, P = 2.9 x 10-4; OR = 1.352, 95% CI = 1.097-1.668, P = 0.005), but not Europeans. However, no association was found between TGF-β1 +915 G/C or -509 C/T polymorphisms and RA or SLE. Meta-analysis revealed a significantly lower circulating TGF-β1 level in SLE patients, and a significant association between TGF-β1 +869 T/C polymorphism and RA development.
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Song GG, Lee YH. Circulating prolactin level in systemic lupus erythematosus and its correlation with disease activity: a meta-analysis. Lupus 2017; 26:1260-1268. [DOI: 10.1177/0961203317693094] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective This study aimed to evaluate the relationship between circulating prolactin level and systemic lupus erythematosus (SLE), and to establish a correlation between plasma/serum prolactin levels and SLE activity. Methods We performed a meta-analysis comparing the plasma/serum prolactin levels in patients with SLE to controls, and examined correlation coefficients between circulating prolactin level and SLE disease activity. Results Twenty-five studies with a total of 1056 SLE patients and 426 controls were included. Prolactin levels were significantly higher overall in the SLE group than in the control group (standardized mean difference (SMD) = 0.987, 95% CI = 0.512–1.463, p = 4.7 × 10−5). Stratification by ethnicity showed significantly elevated prolactin levels in the SLE group in Asian, Latin American, and mixed populations (SMD = 0.813, 95% CI = 0.137–1.490, p = 0.018; SMD = 0.981, 95% CI = 0.307–1.655, p = 0.004; SMD = 1.469, 95% CI = 0.443–2.495, p = 0.005, respectively), but not in the European population. Subgroup analysis by sample size showed significantly higher prolactin levels in the SLE group by small ( n < 30) and large sample numbers ( n > 30). Meta-analysis of correlation coefficients showed a significantly positive correlation between circulating prolactin level and SLE activity (correlation coefficient = 0.379, 95% CI = 0.026–0.487, p = 4.0 × 10−9). Circulating prolactin levels were positively associated with SLE activity in European, Asian, and mixed populations (SMD = 0.532, 95% CI = 0.443–0.609 p < 1.0 × 10−8; SMD = 0.427, 95% CI = 0.240–0.583, p = 2.4 × 10−5; SMD = 0.433, 95% CI = 0.212–0.591, p = 2.7 × 10−5, respectively). Conclusions Our meta-analysis demonstrated that circulating prolactin levels are higher in patients with SLE, and that a significantly positive correlation exists between prolactin levels and SLE activity.
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Song GG, Bae SC, Lee YH. Vitamin D receptor FokI, BsmI, and TaqI polymorphisms and susceptibility to rheumatoid arthritis : A meta-analysis. Z Rheumatol 2017; 75:322-9. [PMID: 26358095 DOI: 10.1007/s00393-015-1581-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE The aim of this study was to explore whether vitamin D receptor (VDR) polymorphisms are associated with susceptibility to rheumatoid arthritis (RA). METHODS Meta-analyses were conducted on the associations between the VDR FokI, BsmI, and TaqI polymorphisms and RA. RESULTS A total of seven studies were considered in the meta-analysis, involving a total of 923 patients and 912 controls. Meta-analysis of the VDR FokI polymorphism showed no association between RA and the F allele in the entire studied cohort (odds ratio, OR = 1.1740, 95 % confidence interval, CI = 0.994-1.387, p = 0.059). However, stratification by ethnicity revealed a significant association between the F allele and RA in Europeans (OR = 1.402, 95 % CI = 1.126-1.746, p = 0.003). Furthermore, an association was found between RA and the VDR FokI polymorphism using both the dominant model and homozygote contrast. Meta-analysis revealed no association between RA and the VDR BsmI B and TaqI T polymorphisms in Europeans (OR for the B allele = 1.065, 95 % CI = 0.911-1.245, p = 0.427; OR for the T allele = 1.065, 95 % CI = 0.834-1.361, p = 0.613). CONCLUSION This meta-analysis suggests that the VDR FokI polymorphism is associated with susceptibility to RA in European populations.
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Kang KT, Koh YG, Jung M, Nam JH, Son J, Lee YH, Kim SJ, Kim SH. The effects of posterior cruciate ligament deficiency on posterolateral corner structures under gait- and squat-loading conditions: A computational knee model. Bone Joint Res 2017; 6:31-42. [PMID: 28077395 PMCID: PMC5301905 DOI: 10.1302/2046-3758.61.bjr-2016-0184.r1] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 11/06/2016] [Indexed: 01/12/2023] Open
Abstract
Objectives The aim of the current study was to analyse the effects of posterior cruciate ligament (PCL) deficiency on forces of the posterolateral corner structure and on tibiofemoral (TF) and patellofemoral (PF) contact force under dynamic-loading conditions. Methods A subject-specific knee model was validated using a passive flexion experiment, electromyography data, muscle activation, and previous experimental studies. The simulation was performed on the musculoskeletal models with and without PCL deficiency using a novel force-dependent kinematics method under gait- and squat-loading conditions, followed by probabilistic analysis for material uncertain to be considered. Results Comparison of predicted passive flexion, posterior drawer kinematics and muscle activation with experimental measurements showed good agreement. Forces of the posterolateral corner structure, and TF and PF contact forces increased with PCL deficiency under gait- and squat-loading conditions. The rate of increase in PF contact force was the greatest during the squat-loading condition. The TF contact forces increased on both medial and lateral compartments during gait-loading conditions. However, during the squat-loading condition, the medial TF contact force tended to increase, while the lateral TF contact forces decreased. The posterolateral corner structure, which showed the greatest increase in force with deficiency of PCL under both gait- and squat-loading conditions, was the popliteus tendon (PT). Conclusion PCL deficiency is a factor affecting the variability of force on the PT in dynamic-loading conditions, and it could lead to degeneration of the PF joint. Cite this article: K-T. Kang, Y-G. Koh, M. Jung, J-H. Nam, J. Son, Y.H. Lee, S-J. Kim, S-H. Kim. The effects of posterior cruciate ligament deficiency on posterolateral corner structures under gait- and squat-loading conditions: A computational knee model. Bone Joint Res 2017;6:31–42. DOI: 10.1302/2046-3758.61.BJR-2016-0184.R1.
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Jeon S, Kang DH, Lee YH, Lee S, Lee GW. Effect of atomic size on undercoolability of binary solid solution alloy liquids with Zr, Ti, and Hf using electrostatic levitation. J Chem Phys 2016; 145:174504. [PMID: 27825205 DOI: 10.1063/1.4966649] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We investigate the relationship between the excess volume and undercoolability of Zr-Ti and Zr-Hf alloy liquids by using electrostatic levitation. Unlike in the case of Zr-Hf alloy liquids in which sizes of the constituent atoms are matched, a remarkable increase of undercoolability and negative excess volumes are observed in Zr-Ti alloy liquids as a function of their compositional ratios. In this work, size mismatch entropies for the liquids were obtained by calculating their hard sphere diameters, number densities, and packing fractions. We also show that the size mismatch entropy, which arises from the differences in atomic sizes of the constituent elements, plays an important role in determining the stabilities of metallic liquids.
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Lee YS, Lee YH. Novel Method to Control Vascular Injury by Surgicel Fibrillar at Inferior Vena Caca or Aorta in the Case of Laparoscopic or Robotic Surgery. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Anastassopoulos V, Andrianov S, Baartman R, Baessler S, Bai M, Benante J, Berz M, Blaskiewicz M, Bowcock T, Brown K, Casey B, Conte M, Crnkovic JD, D'Imperio N, Fanourakis G, Fedotov A, Fierlinger P, Fischer W, Gaisser MO, Giomataris Y, Grosse-Perdekamp M, Guidoboni G, Hacıömeroğlu S, Hoffstaetter G, Huang H, Incagli M, Ivanov A, Kawall D, Kim YI, King B, Koop IA, Lazarus DM, Lebedev V, Lee MJ, Lee S, Lee YH, Lehrach A, Lenisa P, Levi Sandri P, Luccio AU, Lyapin A, MacKay W, Maier R, Makino K, Malitsky N, Marciano WJ, Meng W, Meot F, Metodiev EM, Miceli L, Moricciani D, Morse WM, Nagaitsev S, Nayak SK, Orlov YF, Ozben CS, Park ST, Pesce A, Petrakou E, Pile P, Podobedov B, Polychronakos V, Pretz J, Ptitsyn V, Ramberg E, Raparia D, Rathmann F, Rescia S, Roser T, Kamal Sayed H, Semertzidis YK, Senichev Y, Sidorin A, Silenko A, Simos N, Stahl A, Stephenson EJ, Ströher H, Syphers MJ, Talman J, Talman RM, Tishchenko V, Touramanis C, Tsoupas N, Venanzoni G, Vetter K, Vlassis S, Won E, Zavattini G, Zelenski A, Zioutas K. A storage ring experiment to detect a proton electric dipole moment. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:115116. [PMID: 27910557 DOI: 10.1063/1.4967465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Abstract
A new experiment is described to detect a permanent electric dipole moment of the proton with a sensitivity of 10-29 e ⋅ cm by using polarized "magic" momentum 0.7 GeV/c protons in an all-electric storage ring. Systematic errors relevant to the experiment are discussed and techniques to address them are presented. The measurement is sensitive to new physics beyond the standard model at the scale of 3000 TeV.
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Lee YS, Lee YH, Chong GO, Hong DG. Single-Port Laparoscopic Transperitoneal Infrarenal Para-Aortic Lymphadenectomy as Part of Staging Operation for Early Ovarian Cancer and High Grade Endometrial Cancer. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lee YS, Lee YH. Mapping of Sentinel Lymph Nodes by Firefly Fluorescence Imaging with da Vinci Xi System for Endometrial and Cervical Cancers. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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