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Otsuki K, Terui H, Yamasaki K, Aiba S. 851 Three hyaluronic acid synthases differently regulate epidermal and dermal hyaluronan production in murine contact hypersensitivity model. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kumtornrut C, Yamauchi T, Yamasaki K, Aiba S. 854 Dermal fibroblasts enhance growth factors production by androgens, and modulate keratinocyte proliferation and differentiation. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abe H, Teramoto A, Tanaka M, Yamasaki K, Yoneda K. Abstract PD2-06: Preoperative diagnosis of sentinel lymph node metastasis using computed tomography lymphography for early breast cancer patients. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-pd2-06] [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
Background: Sentinel lymph nodes (SLN) biopsy has been established as a standard of care in the treatment of early breast cancer. This technique represents a minimally invasive, highly accurate method of axillary staging and is an alternative to conventional axillary lymph node dissection. However, an indication of SLN navigation to metastatic disease may lead to misdiagnosis for staging. Recently, SLN identification using computed tomography lymphography (CTLG) has been reported in Japan. This study investigated the value of CTLG for preoperative prediction of SLN status in early breast cancer patients.
Patients and method: Between January 2013 and August 2016, 350 breast cancer patients without clinical evidence of lymph node metastasis were treated. On the day before the operation, CTLG was performed using 64-row multidetector helical CT scanner. Patients were placed in a supine position with their arms positioned in a cranial direction with CT guidelineattached to the skin at the axilla. We performed an intradermal injection in the periareolar area, using 4 ml of iopamidolwith 1 ml of local anesthetic. The contrasted lymph route and SLN were identified in reconstructed three-dimensional imaging. The SLN spot was indicated by CT laser light navigator system. We established typical pattern of the lymphography: stain defect of SLN, stagnation of lymphatic route for preoperative diagnosis of metastatic SLN. SLN biopsy was performed using the fluorescence imaging system, Photpdynamic Eye (pde-neo, Hamamatsu Photonics Co., Japan) referring to the point by axillary compression technique by plastic device. Intraoperative pathological analysis of SLN was examined, and an axillary lymph node dissection was performed in patients with SLN metastasis pathologically.
Results: The median age of the 350 patients was 59 (range 28 – 90) years old. One patient was male and others were female. CTLG were safely performed in all patients. CTLG could visualize lymphatic route and accurately identify SLN in 336 (96.0 %) and 343 (98.0 %) cases, respectively. Lymphatic routes of CTLG were completely consistent with those of fluorescence imaging. The mean number of SLN identified by CTLG was 1.1. Fifty of 350 patients had metastatic SLN pathologically, and 11 of them had micrometastases of SLNs. The accuracy for metastatic diagnosis of SLN using CTLG without micrometastasis was 84.1 %, sensitivity was 82.1 % and specificity was 84.3 %. The positive predictive value was 40.5 % and negative predictive value was 97.3 %. There were no complications associated with SLN identification.
Conclusion: CTLG in SLN biopsy has some advantages in that this method is simple and quite useful for obtaining accurate anatomic images of the SLN, lymph vessels, and tumor. CTLG could select the candidate with truly node negative cases in early breast cancer patients, because it predicts lymph node metastasis preoperatively from natural status of the lymphographic image.
Citation Format: Abe H, Teramoto A, Tanaka M, Yamasaki K, Yoneda K. Preoperative diagnosis of sentinel lymph node metastasis using computed tomography lymphography for early breast cancer patients [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr PD2-06.
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Yamasaki K, Daiho T, Danko S, Yasuda S, Suzuki H. Nanodisc-based kinetic assays reveal distinct effects of phospholipid headgroups on the phosphoenzyme transition of sarcoplasmic reticulum Ca 2+-ATPase. J Biol Chem 2017; 292:20218-20227. [PMID: 29032359 DOI: 10.1074/jbc.m117.816702] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/10/2017] [Indexed: 01/08/2023] Open
Abstract
Sarco(endo)plasmic reticulum Ca2+-ATPase catalyzes ATP-driven Ca2+ transport from the cytoplasm to the lumen and is critical for a range of cell functions, including muscle relaxation. Here, we investigated the effects of the headgroups of the 1-palmitoyl-2-oleoyl glycerophospholipids phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylserine (PS), and phosphatidylglycerol (PG) on sarcoplasmic reticulum (SR) Ca2+-ATPase embedded into a nanodisc, a lipid-bilayer construct harboring the specific lipid. We found that Ca2+-ATPase activity in a PC bilayer is comparable with that of SR vesicles and is suppressed in the other phospholipids, especially in PS. Ca2+ affinity at the high-affinity transport sites in PC was similar to that of SR vesicles, but 2-3-fold reduced in PE and PS. Ca2+ on- and off-rates in the non-phosphorylated ATPase were markedly reduced in PS. Rate-limiting phosphoenzyme (EP) conformational transition in 0.1 m KCl was as rapid in PC as in SR vesicles, but slowed in other phospholipids, especially in PS. Using kinetic plots of the logarithm of rate versus the square of mean activity coefficient of solutes in 0.1-1 m KCl, we noted that PC is optimal for the EP transition, but PG and especially PS had markedly unfavorable electrostatic effects, and PE exhibited a strong non-electrostatic restriction. Thus, the major SR membrane lipid PC is optimal for all steps and, unlike the other headgroups, contributes favorable electrostatics and non-electrostatic elements during the EP transition. Our analyses further revealed that the surface charge of the lipid bilayer directly modulates the transition rate.
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Yamasaki K, Fujisawa A, Nagashima Y. A proposal of Fourier-Bessel expansion with optimized ensembles of bases to analyse two dimensional image. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2017; 88:093507. [PMID: 28964170 DOI: 10.1063/1.5000744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 08/17/2017] [Indexed: 06/07/2023]
Abstract
It is a critical issue to find the best set of fitting function bases in mode structural analysis of two dimensional images like plasma emission profiles. The paper proposes a method to optimize a set of the bases in the case of Fourier-Bessel function series, using their orthonormal property, for more efficient and precise analysis. The method is applied on a tomography image of plasma emission obtained with the Maximum-likelihood expectation maximization method in a linear cylindrical device. The result demonstrates the excellency of the method that realizes the smaller residual error and minimum Akaike information criterion using smaller number of fitting function bases.
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Hara S, Miura H, Yamasaki K. POOR ORAL CONDITIONS ARE RELATED TO THE DECLINE OF ORAL DIADOCHOKINETIC RATE AMONG JAPANESE ELDERLY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shido K, Kojima K, Hozawa A, Ogishima S, Minegishi N, Kawai Y, Tamiya G, Tanno K, Yamasaki K, Aiba S, Suzuki Y, Nagasaki M. 503 Genome-wide association study identifies novel susceptibility loci for tanning ability in Japanese population. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.523] [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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Terui H, Yamasaki K, Aiba S. 549 Hyaluronan synthase 3 induces epidermal hyaluronan production by hapten stimulation and modulate contact hypersensitivity response. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.570] [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]
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Koike S, Yamasaki K, Yamauchi T, Aiba S. 780 UVB and Poly(I:C) induce PAR-2 and enhance melanosome uptake by normal human epidermal keratinocytes though TLR3 signaling pathway. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.805] [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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Arita H, Yamasaki K, Kanemura Y, Mukasa A, Nagane M, Ueki K, Nishikawa R, Komori T, Narita Y, Ichimura K. OS07.6 A combination of TERT and MGMT improves the prognostication of glioblastomas. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abe H, Teramoto A, Yamasaki K, Yoneda K, Ogawa M, Kawasaki M, Kameyama M. Abstract P2-01-17: The combination of preoperative computed tomography lymphography and intraoperative fluorescence imaging navigation for sentinel lymph node biopsy of early breast cancer patients. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p2-01-17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Sentinel lymph nodes (SLN) biopsy has been established as a standard of care in the treatment of early breast cancer. This technique represents a minimally invasive, highly accurate method of axillary staging and is an alternative to conventional axillary lymph node dissection. The combination of the radioisotope and dye-staining methods is the most accurate way to identify SLN. We had reported feasibility and safety of a new technique of SLN identification using fluorescence imaging of indocyanine green (ICG) injection without any need for training. Recently, SLN identification using computed tomography lymphography (CTLG) has been reported in Japan. This study investigated a usefulness of the combination of CTLG and fluorescence imaging for SLN biopsy of early breast cancer patients.
Patients and method: Between January 2013 and March 2016, 296 breast cancer patients without clinical evidence of lymph node metastasis were treated. On the day before the operation, CTLG was performed using 64-row multidetector CT. We performed an intradermal injection in the periareolar area, using 4 ml of contrast agent with 1 ml of local anesthetic. The contrasted lymph route and SLN were identified in reconstructed three-dimensional imaging. The SLN spot was indicated by CT laser light navigator system. We established typical pattern of the lymphography: stain defect of SLN, stagnation of lymphatic route for preoperative diagnosis of metastatic SLN. During the operation, fluorescence images were obtained using the fluorescence imaging system, Photpdynamic Eye (pde-neo, Hamamatsu Photonics Co., Japan). After 0.5 ml dye mixed indigocarmin and ICG was injected intradermally into the periareolar skin, lymphatic route was observed with fluorescence images. SLN biopsy was performed referring to the point by axillary compression technique by plastic device. Intraoperative pathological analysis of SLN was examined.
Results: The median age of the 296 patients was 59 (range 28 – 90) years old. One patient was male and others were female. CTLG and fluorescence imaging were safely performed in all patients. CTLG could visualize lymphatic route and accurately identify SLN in 284 (95.9 %) and 290 (98.0 %) cases, respectively, whereas fluorescence imaging identified successfully lymphatic route and SLN in all patients. Lymphatic routes of CTLG were completely consistent with those of fluorescence imaging. The number of SLN identified by CTLG was significantly lower than that by fluorescence imaging (1.1 vs. 1.6, p<0.01). Thirty-nine of 296 patients had metastatic SLN pathologically, and 10 of them had micrometastases of SLNs. The accuracy for metastatic diagnosis of SLN using CTLG without micrometastasis was 83.9 %, sensitivity was 82.1 % and specificity was 84.1 %. The positive predictive value was 35.9 % and negative predictive value was 97.7 %.
Conclusion: The combination of CTLG and fluorescence imaging revealed easy and effective to detect SLN. The fluorescence imaging was more high detection rate and number of SLN than CTLG. Otherwise, preoperative diagnosis of SLN metastasis using CTLG would be useful to detect negative SLNs.
Citation Format: Abe H, Teramoto A, Yamasaki K, Yoneda K, Ogawa M, Kawasaki M, Kameyama M. The combination of preoperative computed tomography lymphography and intraoperative fluorescence imaging navigation for sentinel lymph node biopsy of early breast cancer patients [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 P2-01-17.
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Danko S, Yamasaki K, Daiho T, Suzuki H. Membrane Perturbation of ADP-insensitive Phosphoenzyme of Ca 2+-ATPase Modifies Gathering of Transmembrane Helix M2 with Cytoplasmic Domains and Luminal Gating. Sci Rep 2017; 7:41172. [PMID: 28117348 PMCID: PMC5259720 DOI: 10.1038/srep41172] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/16/2016] [Indexed: 11/25/2022] Open
Abstract
Ca2+ transport by sarcoplasmic reticulum Ca2+-ATPase involves ATP-dependent phosphorylation of a catalytic aspartic acid residue. The key process, luminal Ca2+ release occurs upon phosphoenzyme isomerization, abbreviated as E1PCa2 (reactive to ADP regenerating ATP and with two occluded Ca2+ at transport sites) → E2P (insensitive to ADP and after Ca2+ release). The isomerization involves gathering of cytoplasmic actuator and phosphorylation domains with second transmembrane helix (M2), and is epitomized by protection of a Leu119-proteinase K (prtK) cleavage site on M2. Ca2+ binding to the luminal transport sites of E2P, producing E2PCa2 before Ca2+-release exposes the prtK-site. Here we explore E2P structure to further elucidate luminal gating mechanism and effect of membrane perturbation. We find that ground state E2P becomes cleavable at Leu119 in a non-solubilizing concentration of detergent C12E8 at pH 7.4, indicating a shift towards a more E2PCa2-like state. Cleavage is accelerated by Mg2+ binding to luminal transport sites and blocked by their protonation at pH 6.0. Results indicate that possible disruption of phospholipid-protein interactions strongly favors an E2P species with looser head domain interactions at M2 and responsive to specific ligand binding at the transport sites, likely an early flexible intermediate in the development towards ground state E2P.
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Watanabe H, Yamasaki K, Higashijima A, Taguma H, Nagasaka T, Muroga T. Microstructural changes of Y-doped V-4Cr-4Ti alloys after ion and neutron irradiation. NUCLEAR MATERIALS AND ENERGY 2016. [DOI: 10.1016/j.nme.2016.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Daiho T, Yamasaki K, Danko S, Suzuki H. Glycine 105 as Pivot for a Critical Knee-like Joint between Cytoplasmic and Transmembrane Segments of the Second Transmembrane Helix in Ca2+-ATPase. J Biol Chem 2016; 291:24688-24701. [PMID: 27733680 DOI: 10.1074/jbc.m116.759704] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 10/11/2016] [Indexed: 11/06/2022] Open
Abstract
The cytoplasmic actuator domain of the sarco(endo)plasmic reticulum Ca2+-ATPase undergoes large rotational movements that influence the distant transmembrane transport sites, and a long second transmembrane helix (M2) connected with this domain plays critical roles in transmitting motions between the cytoplasmic catalytic domains and transport sites. Here we explore possible structural roles of Gly105 between the cytoplasmic (M2c) and transmembrane (M2m) segments of M2 by introducing mutations that limit/increase conformational freedom. Alanine substitution G105A markedly retards isomerization of the phosphoenzyme intermediate (E1PCa2 → E2PCa2 → E2P + 2Ca2+), and disrupts Ca2+ occlusion in E1PCa2 and E2PCa2 at the transport sites uncoupling ATP hydrolysis and Ca2+ transport. In contrast, this substitution accelerates the ATPase activation (E2 → E1Ca2). Introducing a glycine by substituting another residue on M2 in the G105A mutant (i.e. "G-shift substitution") identifies the glycine positions required for proper Ca2+ handling and kinetics in each step. All wild-type kinetic properties, including coupled transport, are fully restored in the G-shift substitution at position 112 (G105A/A112G) located on the same side of the M2c helix as Gly105 facing M4/phosphorylation domain. Results demonstrate that Gly105 functions as a flexible knee-like joint during the Ca2+ transport cycle, so that cytoplasmic domain motions can bend and strain M2 in the correct direction or straighten the helix for proper gating and coupling of Ca2+ transport and ATP hydrolysis.
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Yamasaki K, Nakagawa H, Kubo Y, Ootaki K. Efficacy and safety of brodalumab in patients with generalized pustular psoriasis and psoriatic erythroderma: results from a 52-week, open-label study. Br J Dermatol 2016; 176:741-751. [DOI: 10.1111/bjd.14702] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2016] [Indexed: 12/19/2022]
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Kimura Y, Shimada-Omori R, Takahashi T, Tsuchiyama K, Kusakari Y, Yamasaki K, Nishikawa R, Nishigori C, Aiba S. Therapeutic drug monitoring of patients with psoriasis during tumour necrosis factor (TNF)-α antagonist treatment using a novel interleukin-8 reporter cell line. Br J Dermatol 2016; 175:979-987. [DOI: 10.1111/bjd.14717] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2016] [Indexed: 11/30/2022]
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Shimizu R, Kawahara R, Hanada R, Okuno S, Yamasaki K, Tamai Y, Kawahara H. A combination of ultrasound-guided rectus sheath and transversus abdominis plane blocks is superior to either block alone for pain control after gynecological transumbilical single incision laparoscopic surgery. CLIN EXP OBSTET GYN 2016. [DOI: 10.12891/ceog2142.2016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Asano M, Yamasaki K, Yamauchi T, Aiba S. 305 Epidermal iron metabolism to prevent iron loss by desquamation. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.336] [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]
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Inoue M, Kikuchi K, Watabe A, Yamasaki K, Aiba S. The spectrophotometrical analysis of rhododendrol-induced leucoderma using a novel multispectral camera. Br J Dermatol 2016; 175:334-9. [PMID: 26991967 DOI: 10.1111/bjd.14548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND Many users in Japan of skin brightening/lightening cosmetics containing rhododendrol (RD) have developed leucoderma. Leucoderma appears on skin areas repeatedly treated with RD-containing cosmetics. RD-induced leucoderma (RDIL) presents different degrees of well-defined hypopigmentation. It is crucial to determine the degree of hypopigmentation to differentiate RDIL from vitiligo vulgaris (VV). OBJECTIVES To quantitatively evaluate hypopigmentation of RDIL lesions and the recovery of pigmentation, and to compare the hypopigmentation with VV and normal skin. MATERIALS AND METHODS Sixteen cases of RDIL, nine cases of VV and 15 healthy controls were examined using a novel multispectral camera (MSC) that can simultaneously obtain the reflection intensity at 10-nm wavelength intervals from 400 to 760 nm of the photographed area. ∆Absorbance was calculated by subtracting the log of reflection intensity of the target area from that of a white reflection standard. RESULTS Most RDIL lesions showed lower ∆Absorbance than healthy skin and higher ∆Absorbance than VV lesions between 400 and 550 nm. Statistical comparison of the maximum ∆Absorbance from 420 to 460 nm (Max∆Absorbance) for VV, RDIL and control skin showed that the Max∆Absorbance of RDIL was significantly higher than that of VV and lower than that of control skin. The comparison of ∆Absorbance of the same sites in RDIL lesions between the initial visit and 6 months later showed significant improvement after 6 months. CONCLUSIONS These studies demonstrated quantitative changes in RDIL and its recovery phase and suggested the utility of a MSC in obtaining objective colour information of skin disorders.
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Yamasaki K, Murakami Y, Yokoshima T, Uchida K. Effectiveness of A School-Based Universal Prevention Program for Enhancing Self-Confiden Considering The Extended Effects Associated With Achievement of The Direct Purposes of The Program. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
IntroductionWe have developed a group of school-based universal prevention programs for children's health and adjustment. The programs are characterized by new theories such as the somatic-marker hypothesis and enjoyable methods that utilize animated stories and games. This study adopted one of the programs for the development of self-confidence.ObjectiveThe aim was to examine the effectiveness of the program. In addition to the direct purposes of the program, children's adjustments at school and homeroom class were evaluated as extended effects.MethodsParticipants were third grade children in six public elementary schools in Japan. The final sample included 442 children (219 boys and 223 girls). The program was implemented weekly in one regular 45-minute class over 8 weeks. Participants completed a battery of three questionnaires three times, 1 month before the start of the program (T1), 1 week before the start of the program (T2), and during 1 week after the last class of the program (T3).ResultsResults showed that all of the main endpoints of the program significantly improved in the intervention condition (i.e., changes from T2 to T3), compared to the control condition (i.e., changes from T1 to T2). Moreover, children's adjustment at school and homeroom class increased in the intervention condition, compared to the control condition. However, implicit affect was unchanged.ConclusionThis study suggests that the program is effective for enhancing self-confidence, along with adjustments at school and in class. Future research that examines the sustainability of the effectiveness of the program is planned.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Uchida K, Yokoshima T, Yamasaki K. Effects of implicit affect on emotional coping and school adjustment: A short-term longitudinal study with a school-based universal prevention program for enhancing emotional abilities. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
In recent years, affect and emotions are hot research topics in the domains of psychology and brain science. Moreover, an increasing number of studies have started to investigate the effects of implicit affect on health and adjustment. The purpose of this study was to examine the effects of implicit affect on explicit emotional coping with others’ emotions and school adjustment in children.MethodsParticipants were 5th- and 6th-grade children in two public elementary schools in Japan. The final samples were fifty-six children (25 boys and 31 girls). Participants completed a battery of three questionnaires just before (T1) and after (T2) an school-based universal prevention program for enhancing emotional coping abilities with others’ emotions, which was implemented in eight classes during one month. The questionnaires were utilized for assessing implicit positive and negative affect (IPA and INA), explicit emotional coping abilities to identify, understand, and regulate others’ emotions, and the adaptive status of children at school.ResultsHierarchical regression analyses showed that higher IPA at T1 was associated with higher explicit emotional coping and motivation for learning at T2. Also, higher INA at T1 was related to better peer relationship at T2. Moreover, higher IPA and INA at T1 were concerned with higher scores of classroom climate and approval at T2.ConclusionThis study suggested that higher IPA leads to higher explicit emotional coping with others’ emotions. Also, it suggested that higher implicit affectivity (i.e., both higher IPA and INA) causes more adaptive status of children at school.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Abe H, Yamasaki K, Teramoto A, Yoneda K, Ogawa M, Kawasaki M, Kameyama M. Abstract P3-01-02: A comparison of significance with indocyanine green fluorescence imaging method and computed tomography-lymphography in sentinel lymph node identification for early breast cancer patients. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-01-02] [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
Background: Sentinel lymph nodes (SLN) biopsy has been established as a standard of care in the treatment of early breast cancer. This technique represents a minimally invasive, highly accurate method of axillary staging and is an alternative to conventional axillary lymph node dissection. The combination of the radioisotope and dye-staining methods is the most accurate way to identify sentinel lymph nodes. We had reported feasibility and safety of a new technique of SLN identification using fluorescence imaging of indocyanine green (ICG) injection without any need for training. Recently, SLN identification using computed tomography-lymphography (CTLG) has been reported in Japan. This study investigated the comparison of significance with fluorescence imaging method and CTLG.
Patients and method: Between January 2013 and May 2015, 213 breast cancer patients without clinical evidence of lymph node metastasis were treated. On the day before the operation, CTLG was performed using 64-row multidetector CT. We performed an intradermal injection in the periareolar area, using 4 ml of contrast agent with 1 ml of local anesthetic. The contrasted lymph flow and SLN were identified in reconstructed three-dimensional imaging. The SLN spot was indicated by CT laser light navigator system. During the operation, fluorescence images were obtained using the fluorescence imaging system, Photpdynamic Eye (pde-neo, Hamamatsu Photonics Co., Japan). After 5 mg / 0.3ml ICG was injected intradermally in to the periareolar skin, lymphatic drainage was observed with fluorescence images. SLN biopsy was performed referring to the point by axillary compression technique by plastic device.
Results: The median age of the 213 patients was 59 (range 28 – 87) years old. CTLG and fluorescence imaging was safely performed in all patients. CTLG could visualize lymphatic flow and accurately identify SLN in 189 (89 %) and 196 (92 %) cases, respectively, whereas fluorescence imaging identified successfully lymphatic flow and SLN in all patients. Fluorescence imaging with axillary compression technique was visually easy to identify the location of SLN on the axillary skin even in obese patients. Lymphatic flows of CTLG were completely consistent with those of fluorescence imaging. The number of SLN identified by CTLG was significantly lower than that by fluorescence imaging (1.1 vs. 1.6, p<0.01). Twenty seven patients (13%) were found to have lymph node metastases pathologically, and 7 of them had micrometastases of lymph node. In case of partial enhancement of SLN with CTLG, the rate of positive metastasis was significant higher compared to the cases of whole enhancement (p<0.01), however, even if enhancement is poor, about 70 % cases without metastasis are present.
Conclusion: Both of fluorescence imaging and CTLG revealed easy and effective to detect SLN. The fluorescence imaging with fluorescence mapping showed strong fluorescence from all parts of the surgical field, which hindered identification of SLNs, and fluorescence imaging was more high detection rate of SLN.
Citation Format: Abe H, Yamasaki K, Teramoto A, Yoneda K, Ogawa M, Kawasaki M, Kameyama M. A comparison of significance with indocyanine green fluorescence imaging method and computed tomography-lymphography in sentinel lymph node identification for early breast cancer patients. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P3-01-02.
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Shimizu R, Kawahara R, Hanada R, Okuno S, Yamasaki K, Tamai Y, Kawahara H. A combination of ultrasound-guided rectus sheath and transversus abdominis plane blocks is superior to either block alone for pain control after gynecological transumbilical single incision laparoscopic surgery. CLIN EXP OBSTET GYN 2016; 43:504-508. [PMID: 29734536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PURPOSE To investigate the efficacy of the combination of ultrasound-guided rectus sheath (RS) and transversus abdominis plane (TAP) blocks compared with TAP or RS block alone in gynecological single-incision laparoscopic surgery (SILS). MATERIALS AND METHODS Bilateral TAP blocks (Group A, n = 12), TAP and RS blocks (Group B, n = 12), and RS blocks (Group C, n = 12) with 40 ml ropivacaine/patient were performed for ovarian tumor SILS. The analgesic effects were evaluated using a numerical rating scale (NRS) at zero, six, 12, 24, and 48 hours post-surgery. RESULTS Umbilical pain on completion of general anesthesia was significantly less frequent in Group B (1/12) than Group A (7/12) (p = 0.03). The postoperative NRS scores were significantly lower in Group B than Group A at zero (p = 0.02) and six (p = 0.03) hours and Group C at zero (p = 0.001), six (p = 0.02), and 12 (p = 0.004) hours. CONCLUSION The combination of RS and TAP blocks reduced early postoperative pain compared with RS or TAP block alone for gynecological SILS.
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Tsutsumi M, Kitahata H, Fukuda M, Kumamoto J, Goto M, Denda S, Yamasaki K, Aiba S, Nagayama M, Denda M. Numerical and comparative three‐dimensional structural analysis of peripheral nerve fibres in epidermis of patients with atopic dermatitis. Br J Dermatol 2015; 174:191-4. [DOI: 10.1111/bjd.13974] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yamasaki K, Daiho T, Danko S, Suzuki H. Assembly of a Tyr122 Hydrophobic Cluster in Sarcoplasmic Reticulum Ca2+-ATPase Synchronizes Ca2+ Affinity Reduction and Release with Phosphoenzyme Isomerization. J Biol Chem 2015; 290:27868-79. [PMID: 26442589 DOI: 10.1074/jbc.m115.693770] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Indexed: 11/06/2022] Open
Abstract
The mechanism whereby events in and around the catalytic site/head of Ca(2+)-ATPase effect Ca(2+) release to the lumen from the transmembrane helices remains elusive. We developed a method to determine deoccluded bound Ca(2+) by taking advantage of its rapid occlusion upon formation of E1PCa2 and of stabilization afforded by a high concentration of Ca(2+). The assay is applicable to minute amounts of Ca(2+)-ATPase expressed in COS-1 cells. It was validated by measuring the Ca(2+) binding properties of unphosphorylated Ca(2+)-ATPase. The method was then applied to the isomerization of the phosphorylated intermediate associated with the Ca(2+) release process E1PCa2 → E2PCa2 → E2P + 2Ca(2+). In the wild type, Ca(2+) release occurs concomitantly with EP isomerization fitting with rate-limiting isomerization (E1PCa2 → E2PCa2) followed by very rapid Ca(2+) release. In contrast, with alanine mutants of Leu(119) and Tyr(122) on the cytoplasmic part of the second transmembrane helix (M2) and Ile(179) on the A domain, Ca(2+) release in 10 μm Ca(2+) lags EP isomerization, indicating the presence of a transient E2P state with bound Ca(2+). The results suggest that these residues function in Ca(2+) affinity reduction in E2P, likely via a structural rearrangement at the cytoplasmic part of M2 and a resulting association with the A and P domains, therefore leading to Ca(2+) release.
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