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Fukushima K, Inoue Y, Haga Y, Ota T, Honda K, Sato C, Tanaka M. Monoether-Tagged Biodegradable Polycarbonate Preventing Platelet Adhesion and Demonstrating Vascular Cell Adhesion: A Promising Material for Resorbable Vascular Grafts and Stents. Biomacromolecules 2017; 18:3834-3843. [PMID: 28972745 DOI: 10.1021/acs.biomac.7b01210] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We developed a biodegradable polycarbonate that demonstrates antithrombogenicity and vascular cell adhesion via organocatalytic ring-opening polymerization of a trimethylene carbonate (TMC) analogue bearing a methoxy group. The monoether-tagged polycarbonate demonstrates a platelet adhesion property that is 93 and 89% lower than those of poly(ethylene terephthalate) and polyTMC, respectively. In contrast, vascular cell adhesion properties of the polycarbonate are comparable to those controls, indicating a potential for selective cell adhesion properties. This difference in the cell adhesion property is well associated with surface hydration, which affects protein adsorption and denaturation. Fibrinogen is slightly denatured on the monoether-tagged polycarbonate, whereas fibronectin is highly activated to expose the RGD motif for favorable vascular cell adhesion. The surface hydration, mainly induced by the methoxy side chain, also contributes to slowing the enzymatic degradation. Consequently, the polycarbonate exhibits decent blood compatibility, vascular cell adhesion properties, and biodegradability, which is promising for applications in resorbable vascular grafts and stents.
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Saito T, Hayashi K, Nakazawa H, Yagihashi F, Oikawa L, Ota T. A significant association between dysphagia and malnutrition in patients with acute diseases. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3026] [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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Kanemaru A, Kato T, Sugawara Y, Kawaji Y, Hiraoka T, Honda T, Nagajima R, Makita A, Itakura A, Yamazaki R, Ota T. The effects of the intervention using physical exercise and cognitive training on the mental status of the elderly with mild cognitive impairment or mild dementia. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kuchta K, Tung Nguyen H, Ota T, Rausch H, Rauwald Hans W, Morita K, Shoyama Y. On the in vitro Anti-Dengue Virus Activity of the Oleoresin Labdanum of Cistus creticus. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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105
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Ota T, Hashisaka M, Muraki K, Fujisawa T. Negative and positive cross-correlations of current noises in quantum Hall edge channels at bulk filling factor [Formula: see text]. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:225302. [PMID: 28401878 DOI: 10.1088/1361-648x/aa6cc0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cross-correlation noise in electrical currents generated from a series connection of two quantum point contacts (QPCs), the injector and the detector, is described for investigating energy relaxation in quantum Hall edge channels at bulk filling factor [Formula: see text]. We address the importance of tuning the energy bias across the detector for this purpose. For a long channel with a macroscopic floating ohmic contact that thermalizes the electrons, the cross-correlation turns from negative values to the maximally positive value (identical noise in the two currents) by tuning the effective energy bias to zero. This can be understood by considering competition between the low-frequency charge fluctuation generated at the injector, which contributes positive correlation, and the partition noise at the detector, which gives negative correlation. Strikingly, even for a short channel without intentional thermalization, significantly large positive correlation is observed in contrast to negative values expected for coherent transport between the two QPCs.
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Kim G, Sayer G, Rodgers D, Woodward R, Arnold P, Sarswat N, Grinstein J, Kalantari S, Adatya S, Yee J, Ota T, Jeevanandam V, Uriel N. Reduced PF4 and C6orf25 Gene Copies Prior to LVAD in Patients with Thromboembolic Events. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Jeevanandam V, Onsager D, Song T, Chung B, Ota T, Juricek C, Lammy T, Uriel N. The Hemodynamic Effects of Intravascular Ventricular Assist System (iVAS) in Advanced Heart Failure Patients Awaiting Heart Transplant. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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108
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Nnanabu J, Rodgers D, Sarswat N, Raikhelkar J, Adatya S, Kim G, Medvedofsky D, Ota T, Song T, Burkhoff D, Lang R, Jeevanandam V, Sayer G, Uriel N. The Hemodynamic Effects of Concomitant Mitral Valve Repair and Left Ventricular Assist Device Implantation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Juricek C, Imamura T, Costantini H, Kagan V, Song T, Onsager D, Ota T, Adatya S, Kim G, Sarswat N, Sayer G, Jeevanandam V, Uriel N. Predictors of Hemodynamic Stabilization Following Intra-Aortic Balloon Pump Implantation for Cardiogenic Shock. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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110
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Mehta P, Juricek C, Imamura T, Adatya S, Sarswat N, Kim G, Raikhelkar J, Ota T, Jeevanandam V, Sayer G, Uriel N. Increased Post-Operative Mortality in Patients Undergoing Coronary Artery Bypass Grafting During Left Ventricular Assist Device Implantation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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111
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Anyanwu E, Bhatia A, Tehrani D, Deshmukh A, Rodgers D, Adatya S, Sarswat N, Kim G, Sayer G, Ota T, Jeevanandam V, Uriel N. The Accuracy of Physical Exam Compared to RHC in LVAD Patients. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.957] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Lammy T, Juricek C, Kagan V, Onsager D, Song T, Ota T, Uriel N, Jeevanandam V. Subclavian Artery Access Intra-Aortic Balloon Pump (sIABP): An Excellent Value-Based Bridge to Transplant Therapy. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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113
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Sayer G, Medvedofsky D, Adatya S, Sarswat N, Kim G, Kruse E, Ota T, Jeevanandam V, Burkhoff D, Lang R, Uriel N. 3D Echocardiography and Shape Analysis Changes Following Left Ventricular Assist Device Implantation: The Effect of Unloading on Reverse Remodeling. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Jeevanandam V, Onsager D, Song T, Ota T, Juricek C, Lammy T, Kagan V, Costantini H, Sayer G, Adatya S, Kim G, Uriel N. First-in-Human (FIH) Experience with the Intravascular Ventricular Assist System iVAS a Novel Approach to Mechanical Circulatory Support. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Bassi N, Sayer G, Benes L, Murks C, Raikhelkar J, Adatya S, Kim G, Sarswat N, Ota T, Jeevanandam V, Uriel N. Acute Cellular Rejection in Heart Transplant Recipients May Not Be Acute After All. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Deshmukh A, Bhatia A, Sarswat N, Adatya S, Kim G, Sayer G, Ozcan C, Ota T, Jeevanandam V, Uriel N. Left Atrial Appendage Occlusion Is Associated with Decreased Thromboembolic Events in LVAD Patients. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Costantini H, Juricek C, Kagan V, Song T, Onsager D, Ota T, Uriel N, Jeevanandam V. Management of a Counterpulsation Device Outside of the Intensive Care Unit. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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118
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Song T, Wombacher T, Kitahara H, Onsager D, Ota T, Uriel N, Jeevanandam V. A New Cannulation Technique for Ambulatory Percutaneous RVAD. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Wombacher T, Juricek C, Piech R, Ota T, Uriel N, Jeevanandam V, Song T. Percutaneous Subclavian Intra-Aortic Balloon Pump: An Evolving Technique. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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120
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Imamura T, Rodgers D, Adatya S, Sarswat N, Kim G, Raikhelkar J, Ota T, Jeevanandam V, Sayer G, Burkhoff D, Uriel N. The Ramp Fingerprint: LVAD Patients Have Similar Filling Pressures and Speed Change Responses at Repeat Ramp Tests. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Ota T, To N, Kanno Y, Miki N. Evaluation of biofouling for implantable micro dialysis system. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2017; 2016:1942-1945. [PMID: 28268708 DOI: 10.1109/embc.2016.7591103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Implantable artificial kidney can drastically improve the quality of life of the renal disease patients. In previous study, our group has developed a multi-layered micro dialysis device which is composed of micro stainless steel channels and nano-porous polyethersulfone (PES) membranes. The device conducts hemofiltration without dialysis fluids, which is advantageous in miniaturization. We investigated the water-permeability of the PES membrane through in vivo experiments using rat model of renal disease for 5 hours and verified the effectiveness of the device. We investigated the permeability of PES membrane via in vitro experiments for 24 days. Biofouling on the PES membrane was found and caused deterioration of dialysis performance of the membrane. In this research, we investigated the biofouling such as thrombus, coagulation and protein adhesion on the sidewall of the micro fluidic channels. We investigated the micro fluidic channel geometry and surface condition associated with the processing methods. Conducting in vitro experiment for 7 days, biofouling was found to be mainly caused by the surface conditions. The mirror surface formed by electrolytic etching could substantially prevent biofouling.
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Narui K, Ishikawa T, Shimizu D, Tanabe M, Sasaki T, Oba MS, Morita S, Nawata S, Kida K, Mogaki M, Doi T, Tsugawa K, Ogata H, Ota T, Kosaka Y, Sengoku N, Kuranami M, Saito Y, Suzuki Y, Suto A, Arioka H, Chishima T, Ichikawa Y, Endo I, Tokuda Y. Abstract P5-16-04: A randomized phase II neoadjuvant study comparing docetaxel and cyclophosphamide (TC) with 5-fluorouracil, epirubicin, and cyclophosphamide followed by docetaxel (FEC-D) for hormone receptor-negative breast cancer: The Kanagawa breast oncology group (KBOG) 1101 study. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p5-16-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: This study aimed to evaluate response to neoadjuvant chemotherapy (NAC) for patients with hormone receptor-negative (HR-negative) breast cancer (BC) to identify subtypes that require anthracycline treatment.
Methods: In total, 103 patients with operable HR-negative BC were registered. They were randomely assigned to administration of 6 cycles of docetaxel (75mg/m2) and cyclophosphamide (600 mg/m2) (TC6) or 3 cycles of 5-fluorouracil (500 mg/m2), epirubicin (100mg/m2), and cyclophosphamide (500mg/m2) followed by 3 cycles of docetaxel (100mg/m2) (FEC-D). Cytokeratin (CK) 5/6 and EGFR expression were used to identify basal and non-basal triple-negative (TN) BC. The primary endpoint was pathological complete response (pCR); secondary endpoints were safety, breast-conserving surgery, disease-free survival, and overall survival. Predictive factors of pCR for each regimen were also evaluated.
Results:
The pCR rate was 36% for FEC-D and 25.5% for TC6, which did not differ significantly (P=0.265). When TN BC was subdivided into basal and non-basal subtypes, the pCR rate in the basal subtype was significantly lower for TC6 (13.6%) than for FEC-D (42.9%) (P=0.033), but did not significantly differ in the non-basal (TC6, 36.4%; FEC-D, 25.0%) and HER2-positive (TC6, 41.7%; FEC-D, 35.7%) cases.
The relative dose intensities of epirubicin and docetaxel in FEC-D and docetaxel in TC6 were 96.3±13.0%, 93.5±14.6%, and 93.9±16.3% (mean±SD), respectively. Occurrence of grade ≥2 adverse events was significant in FEC-D-treated patients. Poor appetite (P<0.001), nausea (P<0.001), vomiting (P<0.001), dysgeusia (P=0.03), and fatigue (P=0.05) were significantly more common for FEC-D than TC6. Patients treated with FEC-D experienced significantly more febrile neutropenia and anemia (P=0.016 and 0.017, respectively).
The rates of breast-conserving surgery were 68.0 and 72.3% for FEC-D and TC6, respectively (P=0.641).
Patients achieved pCR had better DFS (log rank test, P = 0.287) and OS (log rank test, P = 0.069), though not significant. Patients treated with FEC-D had better DFS (log rank test, P = 0.107) and OS (log rank test, P = 0.159), though not significant. Among patients with TN BC, those treated with FEC-D had significantly better DFS (log rank test, P = 0.016) and OS (log rank test, P = 0.034) than treated with TC6.
Low ALDH1 expression and high topo IIα protein expression were strongly correlated with pCR in FEC-D, with odds ratios (ORs) of 4.33 [95% CI, 1.02–18.38] and 4.08 [0.97–17.2], respectively. ALDH1 was also associated with pCR in TC, OR=3.50 [0.84–14.6]. Other factors, including age, tumor size, nodal status, tumor grade, Ki67, p53, and TOP 2A status were not associated with pCR in either regimen.
Conclusions:We found that TC6 was less effective than FEC-D for treating HR-negative BC because it was insufficient for TNBC, particularly for basal BC. This suggests that anthracycline is more important than taxane for basal BC. Additionally, ALDH1 could be a marker for resistance to conventional chemotherapy.
Citation Format: Narui K, Ishikawa T, Shimizu D, Tanabe M, Sasaki T, Oba MS, Morita S, Nawata S, Kida K, Mogaki M, Doi T, Tsugawa K, Ogata H, Ota T, Kosaka Y, Sengoku N, Kuranami M, Saito Y, Suzuki Y, Suto A, Arioka H, Chishima T, Ichikawa Y, Endo I, Tokuda Y. A randomized phase II neoadjuvant study comparing docetaxel and cyclophosphamide (TC) with 5-fluorouracil, epirubicin, and cyclophosphamide followed by docetaxel (FEC-D) for hormone receptor-negative breast cancer: The Kanagawa breast oncology group (KBOG) 1101 study [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P5-16-04.
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Kristian SA, Ota T, Bubeck SS, Cho R, Groff BC, Kubota T, Destito G, Martin C, Laudenslager J, Koriazova L, Tahara T, Kanda Y. Correction: Generation and Improvement of Effector Function of a Novel Broadly Reactive and Protective Monoclonal Antibody against Pneumococcal Surface Protein A of Streptococcus pneumoniae. PLoS One 2017; 12:e0171732. [PMID: 28166258 PMCID: PMC5293224 DOI: 10.1371/journal.pone.0171732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pone.0154616.].
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Ueda Y, Uraki S, Inaba H, Nakashima S, Ariyasu H, Iwakura H, Ota T, Furuta H, Nishi M, Akamizu T. Graves' Disease in Pediatric and Elderly Patients with 22q11.2 Deletion Syndrome. Intern Med 2017; 56:1169-1173. [PMID: 28502931 PMCID: PMC5491811 DOI: 10.2169/internalmedicine.56.7927] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
22q11.2 Deletion Syndrome (22qDS) is often complicated by autoimmune diseases. To clarify the causal relationship, we examined the lymphocyte subset distribution and the human leucocyte antigen (HLA) in two female patients (one child and an elderly) with Graves' disease (GD) and 22qDS. Thymus dysgenesis might have contributed to the T-cell imbalance and the lack of negative selection in both cases. Notably, HLA-DR14, a known risk factor for GD in Japanese individuals and the decreased regulatory T-cell numbers that were seen in the pediatric case, may affect the early onset of GD. Central and peripheral tolerance and Th1 cells appeared to be associated with the pathogenesis of GD in 22qDS.
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Ota T, Senaratne DNS, Preston NK, Ferrara F, Djikic D, Villemain O, Takahashi L, Niki K, Patrascu N, Benyounes N, Popa E, Diego Bellavia DB, Sundqvist M, Wei-Ting C, Papachristidis A, Djordjevic-Dikic A, Volpi C, Reis L, Nieto Tolosa J, Nishikawa H, D'angelo M, Testuz A, Mo YJ, Hashemi N, Toyota K, Nagamine K, Koide Y, Nomura T, Kurata J, Murakami Y, Kozuka Y, Ohshiro C, Thomas K, Townsend C, Wheeler S, Jacobson I, Elkington A, Balkhausen K, Bull S, Ring L, Gargani L, Carannante L, Russo V, D'alto M, Marra AM, Cittadini A, D'andrea A, Vriz O, Bossone E, Mujovic N, Dejanovic B, Peric V, Marinkovic M, Jankovic N, Orbovic B, Simic D, Sitefane F, Pernot M, Malekzadeh-Milani G, Baranger J, Bonnet D, Boudjemline Y, Uejima T, Nishikawa H, Semba H, Sawada H, Yamashita T, Sugawara M, Kayanuma H, Inoue K, Yagawa M, Takamisawa I, Umemura J, Yoshikawa T, Tomoike H, Mihalcea DJ, Mihaila S, Lungeanu L, Trasca LF, Bruja R, Neagu MS, Albu S, Cirstoiu M, Vinereanu D, Van Der Vynckt C, Gout O, Cohen A, Enache R, Jurcut R, Coman IM, Badea R, Platon P, Calin A, Beladan CC, Rosca M, Ginghina C, Popescu BA, Sonia Dell'oglio SD, Attilio Iacovoni AI, Calogero Falletta CF, Giuseppe Romano GR, Sergio Sciacca SS, Lissa Sugeng LS, Joseph Maalouf JM, Michele Pilato MP, Michele Senni MS, Cesare Scardulla CS, Francesco Clemenza FC, Salman K, Tornvall P, Ugander M, Chen ZC, Wang JJ, Fisch S, Liao RL, Roper D, Casar Demarco D, Papitsas M, Tsironis I, Byrne J, Alfakih K, Monaghan MJ, Boskovic N, Rakocevic I, Giga V, Tesic M, Stepanovic J, Nedeljkovic I, Aleksandric S, Kostic J, Beleslin B, Altman M, Annabi MS, Abouchakra L, Cucchini U, Muraru D, Badano LP, Ernande L, Derumeaux G, Teixeira R, Fernandes A, Almeida I, Dinis P, Madeira M, Ribeiro J, Puga L, Nascimento J, Goncalves L, Cambronero Sanchez FJ, Pinar Bermudez E, Gimeno Blanes JR, De La Morena Valenzuela G, Uejima T, Takahashi L, Semba H, Sawada H, Yamashita T, Lopez Fernandez T, Irazusta Cordoba FJ, Rosillo Rodriguez SO, Dominguez Melcon FJ, Meras Colunga P, Gemma D, Moreno Gomez R, Moreno Yanguela M, Lopez Sendon JL, Nguyen V, Mathieu T, Kerneis C, Cimadevilla C, Kubota N, Codogno I, Tubiana S, Estrellat C, Vahanian A, Messika-Zeitoun D, Ondrus T, Van Camp G, Di Gioia G, Barbato E, Bartunek J, Penicka M, Johnsson J, Gomez A, Alam M, Winter R. Poster Session 3The imaging examination and quality assessmentP626Value of mitral and tricuspid annular displacement to assess the interventricular systolic relationship in severe aortic valve stenosis : a Pilot studyP627Follow-up echocardiography in asymptomatic valve disease: assessing the potential economic impact of the European and American guidelines in a dedicated valve clinic, compared to standard care.P628The tricuspid valve: identification of optimal view for assessing for prolapseP629Right atrial volume by two-dimensional echocardiography in healthy subjectsP630Disturbance of inter and intra atrial conduction assessed by tissue doppler imaging in patients with medicaly controlled hypertension and prehypertension.P631Liver stiffness by shear wave elastography, new noninvasive and quantitative tool for acute variation estimation of central venous pressure in real-time?P632Weak atrial kick contribution is associated with a risk for heart failure decompensationP633Usefulness of wave intensity analysis in predicting the response to cardiac resynchronization therapyP634Early subclinical left ventricular systolic and diastolic dysfunction in gestational hypertension and preeclampsiaP635Clinical comparison of three different echocardiographic methods for left ventricular ejection fraction and LV end diastolic volume measurementP636Assessment of right ventricular-arterial coupling parameters by 3D echocardiography in patients with pulmonary hypertension receiving specific vasodilator therapyP637Prediction of right ventricular failure after left ventricular assist device implant: assessing usefulness of standard and strain echocardiographyP638Kinematic analysis of diastolic function using the novel freely available software Echo E-waves - feasibility and reproducibilityP639Evaluation of coronary flow velocity by Doppler echocardiography in the treatment of hypertension with the ARB: correlation to the histological cardiac fibrosisP640The clinical significance of limited apical ischaemia and the prognostic value of stress echocardiography - A contemporary study from a high volume centerP641Effects of intermediate stenosis of left anterior descending coronary artery on survival in patients with chronic total occlusion of right coronary arteryP642Left ventricular remodeling after a first myocardial infarction in patients with preserved ejection fraction at dischargeP643Left atrial size and acute coronary syndromes. Let is make simple.P644Influence of STEMI reperfusion strategy on systolic and diastolic functionP645Aortic valve resistance risk-stratifies low-gradient severe aortic stenosisP646Does permanent pacemaker implantation complicate the prognosis of patients after transcatheter aortic valve implantation?P647Influence of metabolic syndrome and diabetes on progression of calcific aortic valve stenosis - The COFRASA - GENERAC StudyP648Low referral for aortic valve replacement accounts for worse long-term outcome in low versus high gradient severe aortic stenosis with preserved ejection fractionP649The impact of right ventricular function from aortic valve replacement: A randomised study comparing minimally invasive aortic valve surgery and conventional open heart surgery. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bounyong S, Adachi S, Yoshimoto T, Ota T, Ozawa J. Controlling interfered area in interferential current stimulation by electrode-area patterning. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2016:1721-1724. [PMID: 28268658 DOI: 10.1109/embc.2016.7591048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Interferential current therapy is a noninvasive therapy using simultaneously two or more medium-frequency currents passing through tissue. By controlling the interfered area of the current flows, selective stimulation is possible in target muscles, including deep muscles. However, controlling the interfered area or the intensity of the current precisely is still lacking. Using simulations based on a biological model of the thigh as well as electrical muscle stimulation (EMS) experiments, we investigated the influence of electrode area ratio in changing the interfered area of the currents. Simulation and experiments were conducted under the same conditions, whereby current signals were applied through electrodes placed on the quadriceps and hamstring with an electrode area ratio of either 1:1 or 3:1. A comparison of the simulation results showed that the interferential current density decreased near the larger area electrode but increased near the smaller area electrode. In addition, the EMS experiment also showed that the quadriceps were stimulated using electrodes in a 1:1 area ratio, and the hamstrings were stimulated using electrodes in a 3:1 area ratio. These results demonstrated the possibility of controlling the area application of interferential current through electrode area patterning.
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Karpouzas G, Thorne C, Takeuchi T, Tanaka Y, Yamanaka H, Harigai M, Ota T, Sheng S, Xu W, Xu S, Kurrasch R, Fei K, Hsu B. SAT0166 An Analysis of Laboratory Results from 2 Randomized, Double-Blind Studies of Sirukumab in Patients with Active Rheumatoid Arthritis Refractory To Disease-Modifying Anti-Rheumatic Drug Treatment: Table 1. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.4126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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128
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Kristian SA, Ota T, Bubeck SS, Cho R, Groff BC, Kubota T, Destito G, Laudenslager J, Koriazova L, Tahara T, Kanda Y. Generation and Improvement of Effector Function of a Novel Broadly Reactive and Protective Monoclonal Antibody against Pneumococcal Surface Protein A of Streptococcus pneumoniae. PLoS One 2016; 11:e0154616. [PMID: 27171010 PMCID: PMC4865217 DOI: 10.1371/journal.pone.0154616] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 04/17/2016] [Indexed: 01/21/2023] Open
Abstract
A proof-of-concept study evaluating the potential of Streptococcus pneumoniae Pneumococcal Surface Protein A (PspA) as a passive immunization target was conducted. We describe the generation and isolation of several broadly reactive mouse anti-PspA monoclonal antibodies (mAbs). MAb 140H1 displayed (i) 98% strain coverage, (ii) activity in complement deposition and opsonophagocytic killing (OPK) assays, which are thought to predict the in vivo efficacy of anti-pneumococcal mAbs, (iii) efficacy in mouse sepsis models both alone and in combination with standard-of-care antibiotics, and (iv) therapeutic activity in a mouse pneumonia model. Moreover, we demonstrate that antibody engineering can significantly enhance anti-PspA mAb effector function. We believe that PspA has promising potential as a target for the therapy of invasive pneumococcal disease by mAbs, which could be used alone or in conjunction with standard-of-care antibiotics.
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129
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Sarswat N, Adatya S, Sayer G, Kim G, Ota T, Jeevanandam V, Uriel N. Outcomes with Implementation of Algorithmic Hemodynamic Ramps in Patients with Continuous Flow LVADs. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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130
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Sayer G, Kruse E, Addetia K, Grinstein J, Adatya S, Sarswat N, Kim G, Ota T, Jeevanandam V, Lang R, Uriel N. Impact of Aortic Insufficiency on Unloading Properties of Continuous-Flow Left Ventricular Assist Devices. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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131
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Sayer G, Medvedofsky D, Adatya S, Sarswat N, Kim G, Addetia K, Kruse E, Ota T, Jeevanandam V, Lang R, Uriel N. 3D Surface Analysis of RV and LV Shapes as Predictors of Post-LVAD RV Failure. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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132
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Sayer G, Medvedofsky D, Adatya S, Sarswat N, Kim G, Addetia K, Kruse E, Ota T, Jeevanandam V, Lang R, Uriel N. Assessment of Ventricular Remodeling Post-LVAD with 3D Echocardiography and Surface Analysis. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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133
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Bhatia A, Sayer G, Adatya S, Kim G, Sarswat N, Ota T, Jeevanandam V, Uriel N. Clopidogrel Does Not Increase Incidence of Bleeding in LVAD Patients. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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134
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Moss J, Raiman M, Flatley E, Ota T, Jeevanandam V, Uriel N. Open Chest Epicardial Voltage Mapping during Left Ventricular Assist Device Implant in Patients with End-Stage Heart Failure. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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135
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Grinstein J, Kruse E, Sayer G, Kim G, Sarswat N, Sarswat N, Adatya S, Ota T, Jeevanandam V, Mor-Avi V, Lang R, Uriel N. LVAD Outflow Cannula Systolic Slope in Patients with Left Ventricular Assist Devices: A Marker of Myocardial Contractility. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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136
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Bassi N, Murks C, Adatya S, Kim G, Sarswat N, Sayer G, Rodgers D, Ota T, Uriel N, Jeevanandam V. Similar Post-Heart Transplant Outcomes with Undersized or Oversized Donors When Left Ventricular End Diastolic Dimension (LVEDD) Is within Range. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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137
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Grinstein J, Rodgers D, Kalantari Tannenbaum S, Adatya S, Sarswat N, Kim G, Sayer G, Ota T, Jeevanandam V, Mor-Avi V, Burkhoff D, Uriel N. HVAD Waveform as a Surrogate Marker of Cardiac Index and Pulmonary Capillary Wedge Pressure. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Tannenbaum SK, Grinstein J, Smith B, Marinescu K, Sarswat N, Adatya S, Sayer G, Kim G, Ota T, Jeevanandam V, Uriel N. The Hemodynamic Effects of Milrinone in the Beta-Blocker Era. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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139
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Smith B, Uriel N, Adatya S, Sayer G, Sarswat N, Kalantari Tannenbaum S, Grinstein J, Marinescu K, Kagan V, Juricek C, Ruedlinger H, Jeevanandam V, Ota T, Kim G. Advanced Heart Failure Therapies in a High Risk Urban Population. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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140
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Bhatia A, Sayer G, Adatya S, Kim G, Sarswat N, Ota T, Jeevanandam V, Uriel N. Three-Fold Increase in Bleeding Rate in LVAD Patients Bridged with Enoxaparin for Sub-Therapeutic INR. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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141
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Lang J, Ota T, Kelly M, Strauch P, Freed BM, Torres RM, Nemazee D, Pelanda R. Receptor editing and genetic variability in human autoreactive B cells. J Exp Med 2015; 213:93-108. [PMID: 26694971 PMCID: PMC4710202 DOI: 10.1084/jem.20151039] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/23/2015] [Indexed: 12/11/2022] Open
Abstract
Lang et al. show in a humanized mouse model that human B cells undergo central tolerance via a combination of receptor editing and clonal deletion. The mechanisms by which B cells undergo tolerance, such as receptor editing, clonal deletion, and anergy, have been established in mice. However, corroborating these mechanisms in humans remains challenging. To study how autoreactive human B cells undergo tolerance, we developed a novel humanized mouse model. Mice expressing an anti–human Igκ membrane protein to serve as a ubiquitous neo self-antigen (Ag) were transplanted with a human immune system. By following the fate of self-reactive human κ+ B cells relative to nonautoreactive λ+ cells, we show that tolerance of human B cells occurs at the first site of self-Ag encounter, the bone marrow, via a combination of receptor editing and clonal deletion. Moreover, the amount of available self-Ag and the genetics of the cord blood donor dictate the levels of central tolerance and autoreactive B cells in the periphery. Thus, this model can be useful for studying specific mechanisms of human B cell tolerance and to reveal differences in the extent of this process among human populations.
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Shimada H, Hirano S, Sinotoh H, Ota T, Tanaka N, Sato K, Yamada M, Fukushi K, Irie T, Zhang MR, Higuchi M, Kuwabara S, Suhara T. Dementia with Lewy bodies can be well-differentiated from Alzheimer's disease by measurement of brain acetylcholinesterase activity-a [11C]MP4A PET study. Int J Geriatr Psychiatry 2015; 30:1105-13. [PMID: 26280153 DOI: 10.1002/gps.4338] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 07/07/2015] [Accepted: 07/08/2015] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the diagnostic performance of brain acetylcholinesterase (AChE) activity measurement using N-[(11) C]-methyl-4-piperidyl acetate (MP4A) and PET in patients with dementia with Lewy bodies (DLB) and Alzheimer's disease (AD). METHODS Participants were 14 DLB patients, 25 AD patients and 18 age-matched healthy controls (HC). All subjects underwent PET scans and MP4A to measure regional brain AChE activity. We performed anatomical standardization of each brain image, and k3 values, an index of AChE activity, in each voxel were estimated by nonlinear least squares analysis. Volumes of interest (VOIs) were identified on parametric k3 images in frontal, temporal, parietal and occipital cortices, and in anterior and posterior cingulate gyri (ACG and PCG). In each VOI, the differential diagnostic performance between AD and DLB of k3 values was assessed by area under the curve (AUC) of the receiver-operating characteristic. Voxel-based statistical analyses were also performed. RESULTS Mean cortical AChE activities in AD patients (-8.2% compared with normal mean) and DLB patients (-27.8%) were lower than HCs (p < 0.05, p < 0.001, respectively). There was a significant difference in mean cortical AChE activities between AD and DLB patients (p < 0.001). All regional brain AChE activities of defined VOIs except ACG were able to well discriminate DLB from AD, and notably performance was the most significant in PCG (AUC = 0.989, 95% CI: 0.965-1.000). CONCLUSIONS Brain cholinergic deficit is consistently prominent in DLB compared with AD. PET measurement of brain AChE activity may be useful for the differential diagnosis between DLB and AD.
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Jardine JG, Ota T, Sok D, Pauthner M, Kulp DW, Kalyuzhniy O, Skog PD, Thinnes TC, Bhullar D, Briney B, Menis S, Jones M, Kubitz M, Spencer S, Adachi Y, Burton DR, Schief WR, Nemazee D. HIV-1 VACCINES. Priming a broadly neutralizing antibody response to HIV-1 using a germline-targeting immunogen. Science 2015; 349:156-61. [PMID: 26089355 DOI: 10.1126/science.aac5894] [Citation(s) in RCA: 299] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Accepted: 06/11/2015] [Indexed: 12/19/2022]
Abstract
A major goal of HIV-1 vaccine research is the design of immunogens capable of inducing broadly neutralizing antibodies (bnAbs) that bind to the viral envelope glycoprotein (Env). Poor binding of Env to unmutated precursors of bnAbs, including those of the VRC01 class, appears to be a major problem for bnAb induction. We engineered an immunogen that binds to VRC01-class bnAb precursors and immunized knock-in mice expressing germline-reverted VRC01 heavy chains. Induced antibodies showed characteristics of VRC01-class bnAbs, including a short CDRL3 (light-chain complementarity-determining region 3) and mutations that favored binding to near-native HIV-1 gp120 constructs. In contrast, native-like immunogens failed to activate VRC01-class precursors. The results suggest that rational epitope design can prime rare B cell precursors for affinity maturation to desired targets.
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Koyama Y, Numata K, Nakamura S, Nagano S, Ota T, Higuchi T. FRI0189 Comparison of Gene-Expression Modification Profiles Between Targeting IL-6 and Targeting Jak Treatment: Effecting Common Biological Processes or Disparate? Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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145
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Fukushima K, Tsai MY, Ota T, Haga Y, Matsuzaki K, Inoue Y, Tanaka M. Evaluation of the hemocompatibility of hydrated biodegradable aliphatic carbonyl polymers with a subtle difference in the backbone structure based on the intermediate water concept and surface hydration. Polym J 2015. [DOI: 10.1038/pj.2015.22] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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146
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Murks C, Juricek C, Kim G, Sayer G, Uriel N, Ota T, Jeevanandam V, Fedson S. Patients With Visuospatial Constructional Deficits May Successfully Manage LVADs. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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147
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Uriel N, Sayer G, Addetia K, Fedson S, Collins K, Kim G, Kruse E, Juricek C, Rodgers D, Ota T, Jeevanandam V, Lang R. Similar Pressure and Volume Unloading With Different Geometrical Changes Between HVAD and HMII Detected During Hemodynamics 3D Echo Ramp Studies. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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148
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Sayer G, Addetia K, Fedson S, Kruse E, Collins K, Rodgers D, Juricek C, Ota T, Jeevanandam V, Lang R, Uriel N. Anatomical and Hemodynamic Response of the Right Ventricle During Increases in Left Ventricular Assist Device Speed. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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149
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Henderson C, Patel K, Sayer G, Fedson S, Kim G, Ota T, Juricek C, Jeevanandam V, Uriel N. Extremes of Obesity and LVAD Patient Morbidity and Mortality. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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150
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Sekimoto T, Kurogi S, Funamoto T, Ota T, Watanabe S, Sakamoto T, Hamada H, Chosa E. Possible association of single nucleotide polymorphisms in the 3' untranslated region of HOXB9 with acetabular overcoverage. Bone Joint Res 2015; 4:50-5. [PMID: 25833894 PMCID: PMC4413364 DOI: 10.1302/2046-3758.44.2000349] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 02/05/2015] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES Excessive acetabular coverage is the most common cause of pincer-type femoroacetabular impingement. To date, an association between acetabular over-coverage and genetic variations has not been studied. In this study we investigated the association between single nucleotide polymorphisms (SNPs) of paralogous Homeobox (HOX)9 genes and acetabular coverage in Japanese individuals to identify a possible genetic variation associated with acetabular over-coverage. METHODS We investigated 19 total SNPs in the four HOX9 paralogs, then focused in detail on seven of those located in the 3' untranslated region of HOXB9 (rs8844, rs3826541, rs3826540, rs7405887, rs2303485, rs2303486, rs79931349) using a case-control association study. The seven HOXB9 SNPs were genotyped in 316 subjects who had all undergone radiological examination. The association study was performed by both single-locus and haplotype-based analyses. RESULTS The genotype and allele frequencies of the five HOXB9 SNPs showed significant association with acetabular over-coverage compared with controls (rs7405887 OR = 3.16, p = 5.29E-6, 95% CI 1.91 to 5.25). A significant difference was also detected when haplotypes were evaluated (OR = 2.59, p = 2.61E-5, 95% CI 1.65 to 4.08). The two HOXB9 SNPs (rs2303485, rs2303486) were associated with decreased acetabular coverage (rs2303485 OR = 0.524, p = 0.0091, 95% CI 0.322 to 0.855; rs2303486 OR = 0.519, p = 0.011, 95% CI 0.312 to 0.865). CONCLUSIONS The five HOXB9 SNPs (rs8844, rs3826541, rs3826540, rs7405887, rs79931349) were associated with acetabular over-coverage. On the other hand, the two SNPs (rs2303485 and rs2303486) were associated with the lower acetabular coverage. The association of rs2303486 would be consistent with the previous study. Therefore, the HOXB9 SNPs might be involved in the morphogenesis of acetabular coverage, and could be an independent risk factor for developing pincer-type femoroacetabular impingement. Cite this article: Bone Joint Res 2015;4:50-5.
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