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Articles by M Kinoshita
Total Records ( 5 ) for M Kinoshita
  H Ishikawa , E Yano , S Fujimori , M Kinoshita , T Yamanouchi , M Yoshikawa , Y Yamazaki and T. Teramoto
 

Background. Health literacy (HL), the capacity of individuals to access, understand and use health information to make informed and appropriate health-related decisions, is recognized as an important concept in patient education and disease management.

Objective. To examine the relation of three levels of HL (i.e. functional, communicative and critical HL) to patient–physician information exchange during a visit.

Methods. Participants were 134 outpatients with type 2 diabetes who were under continuous care by four attending physicians at a university-affiliated hospital. The visit communication was recorded and analysed using the Roter Interaction Analysis System. Patient HL was measured through a self-reported questionnaire using newly developed self-rated scales of functional, communicative and critical HL. Sociodemographic and clinical characteristics and patient's perception of the information exchange were assessed for each patient through self-reported questionnaires and review of electronic medical records.

Results. Patient HL levels were related to the information exchange process during the visit. Among the three HL scales, communicative HL (the capacity to extract information, derive meaning from different forms of communication and apply new information to changing circumstances) was related to patient's perceptions of the information exchange. Further, patient communicative HL had a modifying effect on the relationship between physician's information giving and patient's perception of it, suggesting that physician's communication may be perceived differently depending on the patient's HL.

Conclusion. The exploration of patient HL may provide a better understanding of potential barriers to patient–physician communication and patient's self-management of disease.

  H Nozaki , M Yanagida , K. i Koide , K Shiotani , M Kinoshita , Y Kobayashi , S Watarai , K Nakamura , A Suzuki , T Ariga and Y. Kushi
 

We have established hybridoma cell lines producing monoclonal antibodies (mAbs) directed to N-acetylglucosaminylβ1-3galactose (GlcNAcβ1-3Gal) residue by immunizing BALB/c mice with lactotriaosylceramide (Lc3Cer). These obtained hybridoma cells, specific to Lc3Cer, were dual immunoglobulin (Ig)-producing cells which secreted both IgM and IgG molecules as antibodies. The established mAbs are able to react with not only Lc3Cer but also GlcNAcβ1-3-terminal glycosphingolipids (GSLs) despite branching or lactosamine chain lengths and human transferrin with terminal GlcNAc residues. Comparison of the variable regions of the cloned IgM and IgG by reversed transcription-polymerase chain reaction analysis confirmed that the variable regions determine the specificity, the other amino acids are conserved, and these mAbs are encoded by J558 and V-21family genes. Furthermore, we have analyzed the expression of GSLs with GlcNAcβ1-3 epitope in acute leukemia cell lines and mouse fetal tissues using these mAbs, in which antigens were distributed comparatively. These mAbs are useful for studying the precise distribution of GlcNAcβ1-3Gal-terminating GSL expression in tissues as well as for detecting GSLs carrying terminal GlcNAcβ1-3Gal carbohydrate structure.

  Y Chiba , N Hashimoto , A Tsuboi , Y Oka , A Murao , M Kinoshita , N Kagawa , Y Oji , N Hosen , S Nishida , H Sugiyama and T. Yoshimine
  Objective

Immunotherapy targeting the Wilms' tumour 1 gene product has been proven safe and effective for treating malignant glioma in a phase II clinical study. Currently, radiation/temozolomide therapy is the standard treatment with only modest benefit. Whether combining radiation/temozolomide therapy with WT1 immunotherapy will have a negating effect on immunotherapy is still controversial because of the significant lymphocytopaenia induced by the former therapy. To address this issue, we investigated the changes in frequency and number of WT1-specific T-cells in patients with malignant gliomas.

Methods

Twenty-two patients with newly diagnosed malignant glioma who received standard radiation/temozolomide therapy were recruited for the study. Blood samples were collected before treatment and on the sixth week of therapy. The frequencies and numbers of lymphocytes, CD8+ T-cells, WT1-specific T-cells, regulatory T-cells, natural killer cells and natural killer T-cells were measured and analysed using T-tests.

Results

Analysis of the frequency of T lymphocytes and its subpopulation showed an increase in regulatory T-cells, but no significant change was noted in the populations of T-cells, WT1-specific T-cells, NK cells and NKT cells. Reductions in the total numbers of T-cells, WT1-specific T-cells, NK cells and NKT cells were mainly a consequence of the decrease in the total lymphocyte count.

Conclusions

Radiation/temozolomide therapy did not significantly affect the frequency of WT1-specific T-cells, suggesting that the combination with WT1 immunotherapy may be possible, although further assessment in the clinical setting is warranted.

  M Kinoshita , K Ono , T Horie , K Nagao , H Nishi , Y Kuwabara , R Takanabe Mori , K Hasegawa , T Kita and T. Kimura
 

Retrovirus insertion-mediated random mutagenesis was applied in 3T3-L1 preadipocyte cells to better understand the molecular basis of obesity (the expansion of individual adipocytes). We found that tryptophan hydroxylase-1, a rate-limiting enzyme for the synthesis of serotonin (5-HT), is expressed in adipocytes and is required for their differentiation. A 5-HT type 2A receptor (5-HT2AR) antagonist, ketanserin, and a 5-HT2cR antagonist, SB-242084, inhibited adipocyte differentiation. Because 5-HT2cR mRNA levels are up-regulated during adipocyte differentiation and micro-RNA (miR)-448 is located in the fourth intron of Htr2c, we also studied the role of miR-448 in 3T3-L1 cells. Through a bioinformatics approach, Krüppel-like factor 5 (KLF5) was identified as a potential target of miR-448. Using a luciferase reporter assay, we confirmed that miR-448 targets the Klf5 3'-intranslated region. Overexpression of miR-448 reduced the expression of Klf5 and adipocyte differentiation, which was confirmed by the reduced expression of adipogenic genes and triglyceride accumulation. To examine the loss of miR-448 function, we constructed a decoy gene that had tandem complementary sequences for miR-448 in the 3'-untranslated region of a luciferase gene under the control of a cytomegalovirus promoter. When the miR-448 decoy gene was introduced into 3T3-L1 preadipocytes, KLF5 was up-regulated and triglyceride concentration was increased. In this study, we identified the regulation of adipocyte differentiation by 5-HT, 5-HT2AR, and 5-HT2CR. miR-448-mediated repression of KLF5 was identified as a negative regulator for adipocyte differentiation.

  T Mihata , J Gates , M. H McGarry , J Lee , M Kinoshita and T. Q. Lee
  Background

Throwing athletes with shoulder pain have been shown to have decreased rotator cuff muscle strength. Shoulder internal impingement and labral peel-back mechanism, as may occur during the late cocking phase of throwing motion, are thought to cause rotator cuff injury and type II superior labrum anterior and posterior lesions. Therefore, the objective of this study was to assess the effect of rotator cuff muscle force on internal impingement and the peel-back of the superior labrum by quantifying maximum external rotation, glenohumeral contact pressure, and position of the cuff insertion relative to the glenoid.

Hypothesis

A change in rotator cuff muscle force will lead to increased external rotation, glenohumeral contact pressure, and overlap of the cuff insertion relative to the glenoid.

Study Design

Controlled laboratory study.

Methods

Eight fresh-frozen cadaveric shoulders were tested at the simulated late cocking position. Glenohumeral contact pressure, location of the cuff insertion relative to the glenoid, and maximum humeral external rotation angle were measured. The forces of the supraspinatus, subscapularis, and infraspinatus muscles were determined based on published clinical electromyographic data. To assess the effect of cuff muscle imbalance, each muscle force was varied. Horizontal abduction positions of 20°, 30°, and 40° with respect to the scapular plane were tested.

Results

Decreased subscapularis strength resulted in a significant increase in maximum external rotation (P <.001) and increased glenohumeral contact pressure (P <.01). The cuff insertion overlapped the edge of the glenoid at 30° and 40° of horizontal abduction for all muscle loading conditions.

Conclusion

Decreased subscapularis muscle strength in the position simulating the late cocking phase of throwing motion results in increased maximum external rotation and also increased glenohumeral contact pressure.

Clinical Relevance

Athletes with decreased subscapularis muscle strength, such as fatigue with repetitive throwing, may be more susceptible to rotator cuff tears and type II superior labrum anterior and posterior lesions. Subscapularis muscle strengthening exercises may be beneficial for preventing these injuries.

 
 
 
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