Bacillus cereus Response to a Proanthocyanidin Trimer, a Transcriptional and Functional Analysis.

Proanthocyanidins are abundant in peanut skin, and in this study, the antibacterial effects of a peanut skin extract (PSE) against food-borne bacteria were investigated to find its minimum inhibitory concentration. Food-borne gram-positive bacteria, and in particular Bacillus cereus, was more sensitive to PSE. In particular, the inhibitory activity of epicatechin-(4ߠ→ 6)-epicatechin-(2ߠ→ O→7, 4ߠ→ 8)-catechin (EEC), a proanthocyanidin trimer from peanut skin, against B. cereus was stronger than that of procyanidin A1, a proanthocyanidin dimer. DNA microarray analysis of B. cereus treated with EEC was carried out, with a finding that 597 genes were significantly up-regulated. Analysis of the up-regulated genes suggested that EEC disrupted the normal condition of the cell membrane and wall of B. cereus and alter its usual nutritional metabolism. Moreover, treatment of B. cereus with EEC inhibited glucose uptake, suggesting that EEC affects the cell-surface adsorption.

Peanut-skin polyphenols, procyanidin A1 and epicatechin-(4 ß â†’ 6)-epicatechin-(2 ß â†’ O → 7, 4 ß â†’ 8)-catechin, exert cholesterol micelle-degrading activity in vitro.

We identified epicatechin-(4 ß â†’ 6)-epicatechin-(2 ß â†’ O → 7, 4 ß â†’ 8)-catechin (EEC) in the skin of the peanut (Arachis hypogaea L.). EEC (a trimer) showed more potent cholesterol micelle-degrading activity than procyanidin A1 (a dimer) did in vitro. The hypercholesterolemia suppressing effect of a peanut skin polyphenol on rats fed high-cholesterol diet in our preceding experiments might thus have been due primarily to a micelle degrading effect in the intestine.

Psychosocial problems of bereaved families of HIV-infected hemophiliacs in Japan.

This study sought to investigate the psychosocial difficulties faced by bereaved families of HIV-infected hemophiliacs in Japan, with the goal of clarifying appropriate ways to offer them support. Interviews were conducted with 46 family members from 36 families, and a written survey was mailed to 392 families. Valid responses from 225 families (307 family members) were analyzed (response rate 57.4%). We found that even at a mean 7-9 years after their family member's death, the bereaved continued to express deep feelings of sorrow and grief, and further, expressed strong feelings of resentment, anger, guilt and regret, anxiety over discrimination, and loneliness. Notably, 95% of the mothers endorsed feeling "sorry for giving birth to a hemophiliac child". Additionally, even after their family member's death, approximately 70% of the respondents continued to restrict their daily activities due to stigmatization or anxiety over discrimination. Finally, 59% of the respondents were found to have posttraumatic stress disorder-like symptoms according to the Impact of Event Scale-Revised, and 46% were found, according to General Health Questionnaire-12 (a measure of mental disorder) criteria, to suffer mental health problems. These results indicate that bereaved families of HIV-infected hemophiliacs in Japan have special characteristics and psychosocial needs, and still suffer significant psychosocial difficulties years after the bereavement.