92 research outputs found
Recommended from our members
Perceived goal instrumentality is associated with forgiveness: A test of the valuable relationships hypothesis
Three autobiographical studies tested the valuable relationships hypothesis of forgiveness. Although previous studies revealed that relationship value predicts interpersonal forgiveness, the measure of relationship value may be conflated with affective assessments of the relationship with the transgressor, which might have caused a criterion contamination problem. Therefore, we assessed the goal-related instrumentality of the transgressor (i.e., how useful the transgressor is for helping the victim to achieve his/her goals in fitness-relevant domains). Three studies, one involving a Japanese student sample (Study 1), a second involving Japanese community sample (Study 2), and a third involving U.S. community sample (Study 3), convergently showed that perceived goal instrumentality, as well as a latent relationship value variable estimated from multiple measures of relationship value, are associated with forgiveness. Moreover, this association could be explained in part by the intermediate association of perceived goal instrumentality with empathy both in Japan and the U.S
Lysophosphatidic acid in medicinal herbs enhances prostaglandin E2 and protects against indomethacin-induced gastric cell damage in vivo and in vitro
Lysophosphatidic acid (LPA) is a bioactive phospholipid that induces diverse biological responses. Recently, we found that LPA ameliorates NSAIDs-induced gastric ulcer in mice. Here, we quantified LPA in 21 medicinal herbs used for treatment of gastrointestinal (GI) disorders. We found that half of them contained LPA at relatively high levels (40–240 μg/g) compared to soybean seed powder (4.6 μg/g), which we previously identified as an LPA-rich food. The LPA in peony (Paeonia lactiflora) root powder is highly concentrated in the lipid fraction that ameliorates indomethacin-induced gastric ulcer in mice. Synthetic 18:1 LPA, peony root LPA and peony root lipid enhanced prostaglandin E2 production in a gastric cancer cell line, MKN74 cells that express LPA2 abundantly. These materials also prevented indomethacin-induced cell death and stimulated the proliferation of MKN74 cells. We found that LPA was present in stomach fluids at 2.4 μM, which is an effective LPA concentration for inducing a cellular response in vitro. These results indicated that LPA is one of the active components of medicinal herbs for the treatment of GI disorder and that orally administered LPA-rich herbs may augment the protective actions of endogenous LPA on gastric mucosa
マウス胸腺の脂肪細胞分化過程の速度論による解析
The differential process of adipocytes was investigated in the thymus and spleen of BALB/c mice by the real time PCR method. The transcriptions of PPARγ (PP) ,adiponectin (Ad) and resistin (Re) were considered as indications of differential stages of adipocytes and the transcription ratios, log Ad/PP and log Re/PP , were measured. These logarithmic ratios increased rapidly, at the border between fetal stage and neonatal, from negative value to positive in the thymus and to nearly 0 in the spleen. Subsequently, they were remained virtually constant throughout the experimental period. Kinetics was applied to the differential model of adipocytes in which the quantity of each transcription was assumed to be proportional to the cell number, and the changes of log Ad/PP and log Re/PP with age were interpreted successfullyBALB/cマウスの胸腺および脾臓での脂肪細胞の分化過程を,PPARγ(PP)に対するアディポネクチン(Ad),およびレジスチン(Re)の転写量を指標として,リアルタイムPCR法により検討した。加齢に伴い成熟脂肪細胞が増加してくる胸腺においては,アディポネクチンおよびレジスチンの転写量は,胎生期にはPPARγ の転写量より少なかったが,出生を境に急激に増大し,PPARγ の転写量の数十倍となり,その後ほぼ一定となった。成熟した脂肪細胞が認められない脾臓では,アディポネクチンおよびレジスチンの転写量は,出生を境に増大し,PPARyの転写量とほぼ等しくなった。各遺伝子の転写量は細胞数に比例すると仮定し,脂肪細胞系列の幹細胞を考えることにより,これらの結果を,速度論により説明することができた
Isotope production in proton-, deuteron-, and carbon-induced reactions on Nb 93 at 113 MeV/nucleon
Isotope-production cross sections for p-, d-, and C-induced spallation reactions on Nb93 at 113 MeV/nucleon were measured using the inverse-kinematics method employing secondary targets of CH2, CD2, and C. The measured cross sections for Mo90, Nb90, Y86,88 produced by p-induced reactions were found to be consistent with those measured by the conventional activation method. We performed benchmark tests of the reaction models INCL-4.6, JQMD, and JQMD-2.0 implemented in the Particle and Heavy Ion Transport code System (PHITS) and of the nuclear data libraries JENDL-4.0/HE, TENDL-2017, and ENDF/B-VIII.0. The model calculations also showed generally good agreement with the measured isotope-production cross sections for p-, d-, and C-induced reactions. It also turns out that, among the three nuclear data libraries, JENDL-4.0/HE provides the best agreement with the measured data for the p-induced reactions. We compared the present Nb93 data with the Zr93 data, that were measured previously by the same inverse kinematics method (Kawase et al., Prog. Theor. Exp. Phys. 2017, 093D03 (2017)2050-391110.1093/ptep/ptx110), with particular attention to the effect of neutron-shell closure on isotope production in p- and d-induced spallation reactions. The isotopic distributions of the measured production cross sections in the Zr93 data showed noticeable jumps at neutron number N=50 in the isotopic chains of ΔZ=0 and -1, whereas no such jump appeared in isotopic chain of ΔZ=0 in the Nb93 data. From INCL-4.6 + GEM calculations, we found that the jump formed in the evaporation process is smeared out by the intranuclear cascade component in Nb91 produced by the Nb93(p,p2n) and (d,d2n) reactions on Nb93. Moreover, for Nb93, the distribution of the element-production cross sections as a function of the change in proton number ΔZ is shifted to smaller ΔZ than for Zr93, because the excited Nb prefragments generated by the cascade process are more likely to emit protons than the excited Zr prefragments, due to the smaller proton-separation energies of the Nb isotopes
Coulomb breakup reactions of 93,94 Zr in inverse kinematics
Coulomb breakup reactions of 93,94 Zr have been studied in inverse kinematics at incident beam energies of about 200 MeV/nucleon in order to evaluate neutron capture reaction methods. The 93 Zr(n,γ) 94 Zr reaction is particularly important as a candidate nuclear transmutation reaction for the long-lived fission product 93 Zr in nuclear power plants. One- and two-neutron removal cross sections on Pb and C targets were measured to deduce the inclusive Coulomb breakup cross sections, 375 ± 29 (stat.) ± 30 (syst.) and 403 ± 26 (stat.) ± 31 (syst.) mb for 93 Zr and 94 Zr, respectively. The results are compared with estimates using the standard Lorentzian model and microscopic calculations. The results reveal a possible contribution of the pygmy dipole resonance or giant quadrupole resonance in the Coulomb breakup reactions of 94 Zr
Genetic variants in antioxidant pathway: Risk factors for hepatotoxicity in tuberculosis patients
Tuberculosis (TB) treatment can cause serious sequelae including adverse effects such as anti-TB drug-induced hepatotoxicity (ATDH). We performed a candidate gene-based association study between single nucleotide polymorphisms (SNPs) in 10 genes in the antioxidant pathway and ATDH susceptibility. The subjects comprised 100 Japanese patients with pulmonary TB who received a treatment regimen including isoniazid and rifampicin. Out of them, 18 patients had ATDH. Thirty-four tag SNPs in 10 genes were analyzed by PCR-restriction fragment length polymorphism or PCR-direct DNA sequencing. The frequencies of alleles and genotypes between patients with and without ATDH were compared in three different genetic models. Statistical analyses revealed that a C/C genotype at rs11080344 in NOS2A, a C/C genotype at rs2070401 in BACH1, and a G/A or A/A genotype at rs4720833 in MAFK independently conferred ATDH susceptibility. Remarkably, the association of the latter two tag SNPs with ATDH susceptibility was highly statistically significant (P = 0.0006) with an odds ratio of 9.730. This study is the first report to demonstrate that NOS2A, BACH1, and MAFK appear to be genetic determinants of ATDH in Japanese patients with TB. Furthermore, a combination of BACH1 and MAFK polymorphisms may be useful as new biomarkers to identify high-risk Japanese TB patients for ATDH
Cross sections for nuclide production in proton- and deuteron-induced reactions on 93
Isotopic production cross sections were measured for proton- and deuteron-induced reactions on 93Nb by means of the inverse kinematics method at RIKEN Radioactive Isotope Beam Factory. The measured production cross sections of residual nuclei in the reaction 93Nb + p at 113 MeV/u were compared with previous data measured by the conventional activation method in the proton energy range between 46 and 249 MeV. The present inverse kinematics data of four reaction products (90Mo, 90Nb, 88Y, and 86Y) were in good agreement with the data of activation measurement. Also, the model calculations with PHITS describing the intra-nuclear cascade and evaporation processes generally well reproduced the measured isotopic production cross sections
Spallation reaction study for fission products in nuclear waste: Cross section measurements for 137
Spallation reactions for the long-lived fission products 137Cs, 90Sr and 107Pd have been studied for the purpose of nuclear waste transmutation. The cross sections on the proton- and deuteron-induced spallation were obtained in inverse kinematics at the RIKEN Radioactive Isotope Beam Factory. Both the target and energy dependences of cross sections have been investigated systematically. and the cross-section differences between the proton and deuteron are found to be larger for lighter fragments. The experimental data are compared with the SPACS semi-empirical parameterization and the PHITS calculations including both the intra-nuclear cascade and evaporation processes
University of Missouri Welcomes International Students to Columbia, Missouri
Published Feb. 13, 2013."International students bring enrollment to record high. ... Square dancing and a potluck meal were among the activities at the welcome party Jan. 15, 2013, for new international students who arrived at MU for the spring semester. About 70 people, including international students and volunteers, sampled a variety of food, such as Thai noodles, curry, pizza, potato chips and granola bars."Story by Ayano Shimizu ; Reprinted with permission from the Columbia Missourian
- …