Structure-activity relationship (SAR) analysis indicates that (i) the configuration of the chiral center in 1 (JIMB01) is not indispensable for the activity, (ii) the phenyl ring is essential, and (iii) a substitution at the 6-position of the phenyl ring with a halogen enhances the activity. Among the analogues, 11e and 14b bearing 6-fluoro substitution showed potent activities against nine human tumor cell lines, including CEM (leukemia), Daudi (lymphoma), MCF-7 (breast cancer), Bel-7402 (hepatoma), DU-145 (prostate cancer),

PC-3 (prostate cancer), DND-1A(melanoma), LOVO (colon cancer), and MIA Paca (pancreatic cancer) with IC(50) values between 0.01 and 0.30 mu M. 14b inhibited human hepatocarcinoma by 86% in volume in nude mice. The mechanism of 14b is to inhibit microtubule see more assembly, followed by the M-phase arrest, bcl-2 inactivation, and then apoptosis. We consider 14b promising for further anticancer investigation.”
“The roles of DNA repair by apurinic/apyrimidinic (AP) endonucleases alone, and together with DNA protection by alpha/beta-type small acid-soluble spore proteins (SASP), in Bacillus subtilis spore resistance

to different types of radiation have been studied. Spores lacking both AP endonucleases (Nfo and ExoA) and major SASP were significantly more sensitive to 254-nm UV-C, environmental find more UV (>280 nm), X-ray exposure, and high-energy charged (HZE)-particle bombardment and had elevated mutation frequencies compared to those of wild-type spores and spores lacking only one or both AP endonucleases or major SASP. These findings further implicate AP endonucleases and alpha/beta-type SASP in repair

and protection, respectively, of spore DNA against effects of UV and ionizing radiation.”
“Objective This study examined factors underlying racial differences in pain and function among patients with hip and/or knee osteoarthritis (OA)\n\nMethods Participants selleck kinase inhibitor were n = 491 African Americans and Caucasians enrolled in a clinical trial of telephone-based OA self-management Arthritis Impact Measurement Scales-2 (AIMS2) pain and function subscales were obtained at baseline Potential explanatory variables included arthritis self-efficacy, AIMS2 affect subscale, problem- and emotion-focused pain coping, demographic characteristics, body mass index, self-reported health, joint(s) with OA, symptom duration, pain medication use, current exercise, and AIMS2 pain subscale (in models of function) Variables associated with both race and pain or function, and which reduced the association of race with pain or function by >= 10%, were included in final multivariable models.\n\nResults In simple linear regression models, African Americans had worse scores than Caucasians on AIMS2 pain (B = 0 65, P = 0 001) and function (B = 0.59, P < 0.