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Seino S, Kitamura A, Nishi M, Murayama H, Narita M, Yokoyama Y, Nofuji Y, Shinkai S. A MULTIFACTORIAL INTERVENTION FOR IMPROVING FRAILTY STATUS: EXPLORING SHORT- AND LONG-TERM EFFECTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Amano H, Kitamura A, Nishi M, Taniguchi Y, Seino S, Yokoyama Y, Fujiwara Y, Shinkai S. MULTIVARIATE TRAJECTORIES OF COGNITIVE DECLINE IN OLD AGE: CLUSTERS AND RISK FACTORS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yasunaga M, Nishi M, Hasebe M, Nonaka K, Koike T, Suzuki H, Murayama Y, Fujiwara Y. SYNERGISTIC IMPACTS OF PRE-HOMEBOUND AND SOCIAL ISOLATION ON MORTALITY AMONG THE OLDER IN JAPAN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3173] [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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Taniguchi Y, Seino S, Murayama H, Nishi M, Amano H, Fujiwara Y, Kitamura A, Shinkai S. TRAJECTORY PATTERN OF ARTERIAL STIFFNESS AND MORTALITY RISK AMONG OLDER JAPANESE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Shinkai S, Taniguchi Y, Amano H, Murayama H, Seino S, Nishi M, Yokoyama Y, Kitamura A. TRAJECTORY PATTERN OF MINI-MENTAL STATE EXAMINATION SCORE AND DEMENTIA IN KLSAH. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nishikawa K, Furube E, Morita S, Horii-Hayashi N, Nishi M, Miyata S. Structural Reconstruction of the Perivascular Space in the Adult Mouse Neurohypophysis During an Osmotic Stimulation. J Neuroendocrinol 2017; 29. [PMID: 28072496 DOI: 10.1111/jne.12456] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 12/19/2016] [Accepted: 01/08/2017] [Indexed: 12/11/2022]
Abstract
Oxytocin (OXT) and arginine vasopressin (AVP) neuropeptides in the neurohypophysis (NH) control lactation and body fluid homeostasis, respectively. Hypothalamic neurosecretory neurones project their axons from the supraoptic and paraventricular nuclei to the NH to make contact with the vascular surface and release OXT and AVP. The neurohypophysial vascular structure is unique because it has a wide perivascular space between the inner and outer basement membranes. However, the significance of this unique vascular structure remains unclear; therefore, we aimed to determine the functional significance of the perivascular space and its activity-dependent changes during salt loading in adult mice. The results obtained revealed that pericytes were the main resident cells and defined the profile of the perivascular space. Moreover, pericytes sometimes extended their cellular processes or 'perivascular protrusions' into neurohypophysial parenchyma between axonal terminals. The vascular permeability of low-molecular-weight (LMW) molecules was higher at perivascular protrusions than at the smooth vascular surface. Axonal terminals containing OXT and AVP were more likely to localise at perivascular protrusions than at the smooth vascular surface. Chronic salt loading with 2% NaCl significantly induced prominent changes in the shape of pericytes and also increased the number of perivascular protrusions and the surface area of the perivascular space together with elevations in the vascular permeability of LMW molecules. Collectively, these results indicate that the perivascular space of the NH acts as the main diffusion route for OXT and AVP and, in addition, changes in the shape of pericytes and perivascular reconstruction occur in response to an increased demand for neuropeptide release.
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Yokoyama Y, Nishi M, Murayama H, Amano H, Taniguchi Y, Nofuji Y, Narita M, Matsuo E, Seino S, Kawano Y, Shinkai S. Dietary Variety and Decline in Lean Mass and Physical Performance in Community-Dwelling Older Japanese: A 4-year Follow-Up Study. J Nutr Health Aging 2017; 21:11-16. [PMID: 27999844 DOI: 10.1007/s12603-016-0726-x] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES To examine associations of dietary variety with changes in lean mass and physical performance during a 4-year period in an elderly Japanese population. DESIGN Four-year prospective study. SETTING The Hatoyama Cohort Study and Kusatsu Longitudinal Study, Japan. PARTICIPANTS 935 community-dwelling Japanese aged 65 years or older. MEASUREMENTS Dietary variety was assessed using a 10-item food frequency questionnaire. Body composition was determined by multifrequency bioelectrical impedance analysis, and physical performance (grip strength and usual gait speed) was measured in surveys at baseline and 4 years later. Longitudinal analysis included only participants who were originally in the upper three quartiles of lean body mass, appendicular lean mass, grip strength, and usual gait speed. The outcome measures were decline in lean body mass, appendicular lean mass, grip strength, and usual gait speed, defined as a decrease to the lowest baseline quartile level at the 4-year follow-up survey. Associations of dietary variety with the outcome measures were examined by logistic regression analysis adjusted for potential confounders. RESULTS In the fully adjusted model, the odds ratios for decline in grip strength and usual gait speed were 0.43 (95% confidence interval, 0.19-0.99) and 0.43 (confidence interval, 0.19-0.99), respectively, for participants in the highest category of dietary variety score as compared with those in the lowest category. Dietary variety was not significantly associated with changes in lean body mass or appendicular lean mass. CONCLUSION Among older adults, greater dietary variety may help maintain physical performance, such as grip strength and usual gait speed, but not lean mass.
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Subedi A, Futamura Y, Nishi M, Ryo A, Watanabe N, Osada H. High-throughput screening identifies artesunate as selective inhibitor of cancer stemness: Involvement of mitochondrial metabolism. Biochem Biophys Res Commun 2016; 477:737-742. [DOI: 10.1016/j.bbrc.2016.06.128] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 06/25/2016] [Indexed: 12/20/2022]
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Kumazaki M, Shinohara H, Taniguchi K, Ueda H, Nishi M, Ryo A, Akao Y. Understanding of tolerance in TRAIL-induced apoptosis and cancelation of its machinery by α-mangostin, a xanthone derivative. Oncotarget 2016; 6:25828-42. [PMID: 26304927 PMCID: PMC4694869 DOI: 10.18632/oncotarget.4558] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 07/03/2015] [Indexed: 01/01/2023] Open
Abstract
Tumor necrosis-factor (TNF)-related apoptosis-inducing ligand (TRAIL) is a member of the TNF-superfamily that selectively induces apoptosis through death receptors (DRs) 4 and/or 5 in cancer cells. These receptors are expressed on the cancer cell surface, without affecting normal cells. Unfortunately, many clinical studies have shown that cancer cells acquire TRAIL-resistance and finally avoid TRAIL-induced apoptosis. The detailed mechanisms of this resistance are not well understood. In the current study, we established a TRAIL-resistant human colon cancer DLD-1 cell line to clarify the mechanisms of TRAIL-resistance and developed agents to cancel its machinery. Also, we found that cancer stem-like cells from breast epithelial proliferating MCF10A cells were also sensitive to TRAIL-induced apoptosis. The enforced expression of DR5 in both TRAIL-resistant cells partially recovered the sensitivity to the TRAIL ligand, which was judged by the activation of caspase-8. As a result, we newly found that the mechanisms of TRAIL-resistance comprised co-existence of a decrease in the expression level of DR5 along with malfunction of its recruitment to the cell surface, as evidenced by Western blot and immunocytological analysis, respectively. Interestingly, α-mangostin, which is a xanthone derivative, canceled the resistance by increasing the expression level of DR5 through down-regulation of miR-133b and effectively induced the translocation of DR5 to the cancer cell surface membrane in TRAIL-resistant DLD-1 cells. These findings indicate that α-mangostin functioned as a sensitizer of TRAIL-induced apoptosis and may thus serve as a possible adjuvant compound for cytokine therapy to conquer TRAIL-resistance.
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Ogawa Y, Kojima K, Mannami R, Mannami M, Kitajima K, Nishi M, Ito S, Mitsuhata N, Afuso H. Transplantation of Restored Kidneys From Unrelated Donors After Resection of Renal Cell Carcinoma: Results From 10 Patients. Transplant Proc 2016; 47:1711-9. [PMID: 26293039 DOI: 10.1016/j.transproceed.2015.06.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 06/02/2015] [Indexed: 02/06/2023]
Abstract
PURPOSE To relieve the chronic shortage of donor kidneys, we conducted a prospective kidney transplantation trial using kidneys removed from 10 unrelated patients (51 to 79 years of age) who had undergone nephrectomy for small renal cell carcinoma (1.5 to 3.9 cm) of low-to-moderate complexity based on RENAL (radius, exophytic/endophytic properties, nearness of tumor to the collecting system or sinus in millimeters, anterior/posterior location relative to polar lines) nephrometry (objective description helpful for operative indication and planning). METHODS Donors were selected from among 15 patients who opted to undergo nephrectomy for small renal cell carcinoma. A total of 76 dialysis patients 34 to 85 years of age who agreed to undergo restored kidney transplantation were recruited as transplant candidates. RESULTS In stage 1 (5 cases), high-risk patients were selected without human leukocyte antigen testing, and accelerated acute rejection occurred in 4 of 5 recipients. This trial was subsequently extended with human leukocyte antigen testing, and an additional 5 patients were enrolled in stage 2. Eight recipients, including 4 recipients with a history of renal transplantation, experienced rejection; 1 patient resumed dialysis 35 months after transplantation. The most recent serum creatinine levels ranged from 1.10 to 3.19 mg/dL in the 9 recipients with functioning grafts and from 0.84 to 4.68 mg/dL in the 10 donors. No tumor recurrence was noted at 32 to 58 months after surgery in either the recipients or the donors. CONCLUSIONS Restored kidney transplantation using kidneys with a small renal tumor seems suitable for carefully selected high-risk recipients and, in particular, elderly kidneys can also function well. Avoiding cancer transmission, fair recipient selection, close follow-up, and a well-organized tracking system warrant further study.
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Fujiwara A, Nishi M, Yoshida S, Hasegawa M, Yasuma C, Ryo A, Suzuki Y. Eucommicin A, a β-truxinate lignan from Eucommia ulmoides, is a selective inhibitor of cancer stem cells. PHYTOCHEMISTRY 2016; 122:139-145. [PMID: 26678322 DOI: 10.1016/j.phytochem.2015.11.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 11/25/2015] [Accepted: 11/30/2015] [Indexed: 06/05/2023]
Abstract
Cancer stem cells (CSCs) constitute a small population of undifferentiated cells within a tumor that have the ability to self-renew and drive tumor formation, thus behaving as cancer-initiating cancer cells. Therapeutic interventions that eliminate CSCs are necessary to completely cure patients, since CSCs are a crucial source of tumor recurrence and metastasis. An induced CSC-like (iCSCL) model was recently established using induced pluripotent stem cells (iPSCs). In this study, a natural product-eucommicin A-was identified from Eucommia ulmoides leaves by screening for anti-CSC activity using the iCSCL model. Its structure was elucidated by spectroscopic methods as a quinic acid diester of 3,4,3',4'-tetrahydroxy-β-truxinic acid. Eucommicin A exhibited selective anti-CSC activity and inhibited tumor sphere formation by iCSCL cells. The results of this study suggest that eucommicin A could serve as a lead compound in the development of drugs to abrogate the stemness and self-renewal ability of CSCs.
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Yokoyama Y, Nishi M, Murayama H, Amano H, Taniguchi Y, Nofuji Y, Narita M, Matsuo E, Seino S, Kawano Y, Shinkai S. Association of Dietary Variety with Body Composition and Physical Function in Community-dwelling Elderly Japanese. J Nutr Health Aging 2016; 20:691-6. [PMID: 27499301 DOI: 10.1007/s12603-015-0632-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To examine the associations of dietary variety with body composition and physical function in community-dwelling elderly Japanese. DESIGN Cross-sectional study. SETTING Community-based. PARTICIPANTS A total of 1184 community-dwelling elderly adults aged 65 and over. MEASUREMENTS Dietary variety was assessed with a food frequency questionnaire (maximum, 10 points) that encompassed the 10 main food components of Japanese meals (meat, fish/shellfish, eggs, milk, soybean products, green/yellow vegetables, potatoes, fruit, seaweed, and fats/oils). Body composition was determined by multifrequency bioelectrical impedance analysis. Physical function was assessed by measuring grip strength and usual walking speed. Multiple linear regression analysis was used to examine the associations of dietary variety with body composition and physical function. RESULTS After adjusting for potential confounders, higher dietary variety scores were independently associated with higher lean mass (β (SE): 0.176 (0.049), p<0.001) and appendicular lean mass (β (SE): 0.114 (0.027), p<0.001) but not with body fat mass. Elders with a higher dietary variety score had greater grip strength and faster usual walking speed (β (SE): 0.204 (0.071), p=0.004, and β (SE): 0.008 (0.003), p=0.012, respectively). CONCLUSION Greater dietary variety was significantly associated with greater lean mass and better physical function in Japanese elders. The causal relationship warrants investigation in a prospective study.
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Okayama A, Miyagi Y, Oshita F, Ito H, Nakayama H, Nishi M, Kurata Y, Kimura Y, Ryo A, Hirano H. Identification of Tyrosine-Phosphorylated Proteins Upregulated during Epithelial–Mesenchymal Transition Induced with TGF-β. J Proteome Res 2015. [DOI: 10.1021/acs.jproteome.5b00082] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nishi M, Akutsu H, Kudoh A, Kimura H, Yamamoto N, Umezawa A, Lee SW, Ryo A. Induced cancer stem-like cells as a model for biological screening and discovery of agents targeting phenotypic traits of cancer stem cell. Oncotarget 2015; 5:8665-80. [PMID: 25228591 PMCID: PMC4226712 DOI: 10.18632/oncotarget.2356] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Cancer stem cells (CSCs) retain the capacity to propagate themselves through self-renewal and to produce heterogeneous lineages of cancer cells constituting the tumor. Novel drugs that target CSCs can potentially eliminate the tumor initiating cell population therefore resulting in complete cure of the cancer. We recently established a CSC-like model using induced pluripotent stem cell (iPSC) technology to reprogram and partially differentiate human mammary epithelial MCF-10A cells. Using the induced CSC-like (iCSCL) model, we developed a phenotypic drug assay system to identify agents that inhibit the stemness and self-renewal properties of CSCs. The selectivity of the agents was assessed using three distinct assays characterized by cell viability, cellular stemness and tumor sphere formation. Using this approach, we found that withaferin A (WA), an Ayurvedic medicine constituent, was a potent inhibitor of CSC stemness leading to cellular senescence primarily via the induction of p21Cip1 expression. Moreover, WA exhibited strong anti-tumorigenic activity against the iCSCL. These results indicate that our iCSCL model provides an innovative high throughput platform for a simple, easy, and cost-effective method to search for novel CSC-targeting drugs. Furthermore, our current study identified WA as a putative drug candidate for abrogating the stemness and tumor initiating ability of CSCs.
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Okayama A, Miyagi Y, Oshita F, Nishi M, Nakamura Y, Nagashima Y, Akimoto K, Ryo A, Hirano H. Proteomic Analysis of Proteins Related to Prognosis of Lung Adenocarcinoma. J Proteome Res 2014; 13:4686-94. [DOI: 10.1021/pr4012969] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Taniguchi Y, Shinkai S, Nishi M, Murayama H, Nofuji Y, Yoshida H, Fujiwara Y. Nutritional Biomarkers and Subsequent Cognitive Decline Among Community-Dwelling Older Japanese: A Prospective Study. J Gerontol A Biol Sci Med Sci 2014; 69:1276-83. [DOI: 10.1093/gerona/glt286] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nishi M, Ryo A. Abstract B53: Induction of cells with cancer stem cell properties from p53-deficient somatic cells. Mol Cancer Ther 2013. [DOI: 10.1158/1535-7163.targ-13-b53] [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
The tumor suppressor p53 prevents the initiation of tumor formation by inducing cell cycle arrest, senescence and apoptosis during the process of oncogenesis. Although p53 deficiency promotes the efficiency of somatic cell reprogramming to a pluripotent state upon the transduction of four reprogramming genes Oct4, Sox2, Klf4, and c-Myc, it often gives rise to induced pluripotent stem cells (iPSC) with cancer-like features. We attempted to generate cells with cancer stem cell (CSC) properties from p53-deficient mouse embryonic fibroblasts (MEFs) in vitro. The introduction of iPS reprogramming factors into p53-/- MEFs, followed by partial differentiation via embryoid body formation, transformed the bulk of cells into tumorigenic cells with CSC features. These transformed cells displayed a malignant phenotype and formed tumors of multiple lineages when injected into immunocompromised mice. Immunohistochemical analysis revealed the presence of epithelial (E-cadherin), mesenchymal (Vimentin) and myogenic (Desmin) positive cells in the tumor tissues. These transformed CSC-like cells can be maintained in regular cell culture media in vitro with 10% fetal bovine serum, permitting easy manipulation and amenability to large-scale drug screening. Our current approach could therefore provide a valuable basis for the further analysis of CSC characteristics and drug development strategies designed to target CSCs.
Citation Information: Mol Cancer Ther 2013;12(11 Suppl):B53.
Citation Format: Mayuko Nishi, Akihide Ryo. Induction of cells with cancer stem cell properties from p53-deficient somatic cells. [abstract]. In: Proceedings of the AACR-NCI-EORTC International Conference: Molecular Targets and Cancer Therapeutics; 2013 Oct 19-23; Boston, MA. Philadelphia (PA): AACR; Mol Cancer Ther 2013;12(11 Suppl):Abstract nr B53.
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Cho DH, Kishimoto H, Yamaji K, Brito ME, Bagarinao KD, Nishi M, Shimonosono T, Wang F, Yokokawa H, Horita T. Evaluation of the Cathode Performance and the Distribution of Deposited Cr Species in the LSCF6428 Cathode by Cr Poisoning. ACTA ACUST UNITED AC 2013. [DOI: 10.1149/05701.1865ecst] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Osawa K, Nakagawa T, Sasaki H, Wakasaki H, Furuta H, Nishi M, Nanjo K, Akamizu T. A case of type 2 diabetes with abrupt-onset hypoglycemia due to anti-insulin antibody: Immunological change evaluated by Scatchard analysis during successful treatment by the exchange from human insulin to insulin analogue. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.429] [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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Horita T, Cho DH, Wang F, Nishi M, Shimonosono T, Kishimoto H, Yamaji K, Brito ME, Yokokawa H. Degradation Mechanism of SOFC Cathodes under CrO3 and SO2 Impurity Exposures. ACTA ACUST UNITED AC 2013. [DOI: 10.1149/05101.0069ecst] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Horii-Hayashi N, Sasagawa T, Matsunaga W, Matsusue Y, Azuma C, Nishi M. Developmental changes in desensitisation of c-Fos expression induced by repeated maternal separation in pre-weaned mice. J Neuroendocrinol 2013; 25:158-67. [PMID: 22913644 PMCID: PMC4038260 DOI: 10.1111/j.1365-2826.2012.02377.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 08/01/2012] [Accepted: 08/19/2012] [Indexed: 01/17/2023]
Abstract
Early-life stress has long-lasting effects on neuroendocrine and behaviour in adulthood. Maternal separation (MS) is used as a model of early-life stress and daily repeated MS (RMS) for 3 h during the first two postnatal weeks is widely used in rodent studies. However, it is not fully understood whether early-life animals desensitise/habituate to repeated stress. In the present study, we investigated the effects of daily RMS for 3 h and acute/single time MS (SMS) for 3 h on the plasma corticosterone level and c-Fos expression in the brain in mice at different postnatal ages. Mice were subjected to: (i) RMS from postnatal day (PND) 1 to 14 (RMS14); (ii) RMS from PND14 to 21 (RMS21); (iii) SMS on PND14 (SMS14); and (iv) SMS on PND21 (SMS21). Plasma corticosterone and c-Fos expression were examined on the final day in each experiment. The basal corticosterone levels in RMS14 and RMS21 were equal to those in respective age-matched controls. After the final separation, the levels were significantly increased and were comparable with those after SMS14 and SMS21, respectively. Histological analysis indicated that c-Fos expression significantly increased in many brain regions, including the paraventricular nucleus, prefrontal cortex, hippocampus, and basolateral and medial amygdale in both SMS14 and SMS21 mice. However, c-Fos expression in RMS14 mice significantly increased in many regions, whereas such increases were hardly seen in RMS21 mice. These results indicate that repeated early-life stress neither increases basal corticosterone, nor decreases the magnitude of the corticosterone response during the first three postnatal weeks, although desensitisation of c-Fos expression induced by repeated stress is changed during postnatal development.
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Kikuchi Y, Nakaya M, Ikeda M, Takeda M, Nishi M. Job stress and temperaments in female nurses. Occup Med (Lond) 2012; 63:123-8. [PMID: 23266430 DOI: 10.1093/occmed/kqs212] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND According to previous studies, temperament predicts a large share of the variance in job stress. It may be necessary for mental health practitioners to offer intervention strategies in accordance with individual temperament. AIMS To investigate the relationship between job stress and temperament among nurses in a general hospital and to provide insight into personality traits influencing their mental or physical health. METHODS A questionnaire survey of nurses in a general hospital. Work stress was measured using the Japanese version of the Effort-Reward Imbalance (ERI) scale. Temperament was assessed by a Japanese version of Temperament Evaluation of Memphis, Pisa, Paris and San Diego-Autoquestionnaire (TEMPS-A). Hierarchical multiple regression analysis was used to determine the independent contribution of temperament to effort-reward ratio and over-commitment. RESULTS Response rate was 48% (326/685). Temperament predicted part of the variance of the four ERI ratios (effort-reward ratio 26%; effort-esteem ratio 27%; effort-promotion ratio 26%; and effort-security ratio 18%) and also of over-commitment (38%). Depressive temperament influenced all four ERI ratios and over-commitment. Anxious temperament influenced only over-commitment. CONCLUSIONS Nurses with depressive or anxious temperaments should be identified, monitored for signs of job stress and offered interventions to prevent adverse physical and mental effects.
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Abstract
In order to investigate the relation between the occurrence of colorectal cancer and food consumption in Hokkaido, Japan, etiological factors of colorectal cancer were investigated through an ecologic study using official food consumption and mortality statistics concerning colorectal cancer, and through a community-based case-control study. The ratio of 'animal foods' to 'plant foods' and that of 'animal protein' to 'plant protein' had a significant correlation with the mortality rate in colorectal cancer. The percentage of fat energy was much more contributory than the absolute amount of fat. Traditional Japanese foods tended to prevent while Western foods tended to promote colorectal cancer. Odds ratios for Japanese foods were low for colon cancer, and those for Western foods were high for rectum cancer. Relative amounts of foods are more contributory than their absolute amounts. An increase of colorectal cancer in Japanese people may be attributable to the increase in the relative amounts of Western foods. Reduction of the ratio of animal foods to plant foods (i.e., a reduction in relative amounts of Western foods or an increase in relative amounts of Japanese foods) may lend to the prevention of colorectal cancer.
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Nishi M, Eguchi-Ishimae M, Wu Z, Gao W, Iwabuki H, Kawakami S, Tauchi H, Inukai T, Sugita K, Hamasaki Y, Ishii E, Eguchi M. Suppression of the let-7b microRNA pathway by DNA hypermethylation in infant acute lymphoblastic leukemia with MLL gene rearrangements. Leukemia 2012; 27:389-97. [DOI: 10.1038/leu.2012.242] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Khatua S, Brown R, Pearlman M, Vats T, Satge D, Stiller C, Rutkowski S, von Bueren AO, Lacour B, Sommelet D, Nishi M, Massimino M, Garre ML, Moreno F, Hasle H, Jakab Z, Greenberg M, von der Weid N, Kuehni C, Zurriaga O, Vicente ML, Peris-Bonet R, Benesch M, Vekemans M, Sullivan S, Rickert C, Fisher PG, Von Behren J, Nelson DO, Reynolds P, Fukuoka K, Yanagisawa T, Suzuki T, Koga T, Wakiya K, Adachi JI, Mishima K, Fujimaki T, Matsutani M, Nishikawa R, Gidding C, Schieving J, Wesseling P, Ligtenberg M, Hoogerbrugge N, Jongmans M, Crosier S, Nicholson SL, Robson K, Jacques T, Wharton S, Bown N, Michalski A, Pizer B, Clifford S, Sanden E, Visse E, Siesjo P, Darabi A, Nousome D, Lupo PJ, Scheurer ME, Nulman I, Barrera M, Maxwell C, Koren G, Gorelyshev S, Matuev K, Lubnin A, Laskov M, Lemeneva N, Mazerkina N, Khuhlaeva E, Muller K, Bruns F, Pietsch T, Rutkowski S, Kortmann RD, Krishnatry R, Shirsat N, Kunder R, Epari S, Gupta T, Kurkure P, Vora T, Arora B, Moiyadi A, Jalali R, Swieszkowska E, Dembowska-Baginska B, Drogosiewicz M, Filipek I, Perek-Polnik M, Grajkowska W, Perek D, Johnston D, Cyr J, Strother D, Lafay-Cousin L, Fryer C, Scheinemann K, Carret AS, Fleming A, Larouche V, Bouffet E, Friedrich C, Gnekow AK, Fleischhack G, Kramm CM, Fruehwald MC, Muller HL, Calaminus G, Kordes U, Faldum A, Pietsch T, Warmuth-Metz M, Kortmann RD, Jung I, Kaatsch P, Rutkowski S, Caretti V, Bugiani M, Boor I, Schellen P, Vandertop WP, Noske DP, Kaspers G, Wurdinger T, Wesseling P, Robinson G, Chingtagumpala M, Adesina A, Dalton J, Santi M, Sievert A, Wright K, Armstrong G, Boue D, Olshefski R, Scott S, Huang A, Cohn R, Gururangan S, Bowers D, Gilbertson R, Gajjar A, Ellison D, Chick E, Donson A, Owens E, Smith AA, Madden JR, Foreman NK, Bakry D, Aronson M, Durno C, Hala R, Farah R, Amayiri N, Alharbi Q, Shamvil A, Ben-Shachar S, Constantini S, Rina D, Ellise J, Keiles S, Pollet A, Qaddoumi I, Gallinger S, Malkin D, Bouffet E, Hawkins C, Tabori U, Trivedi M, Goodden J, Chumas P, Tyagi A, O'kane R, Trivedi M, Goodden J, Chumas P, Tyagi A, O'Kane R, Crimmins D, Picton S, Elliott M. EPIDEMIOLOGY. Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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