20-Year Risks of Breast-Cancer Recurrence after Stopping Endocrine Therapy at 5 Years

The administration of endocrine therapy for 5 years substantially reduces recurrence rates during and after treatment in women with early-stage, estrogen-receptor (ER)-positive breast cancer. Extending such therapy beyond 5 years offers further protection but has additional side effects. Obtaining data on the absolute risk of subsequent distant recurrence if therapy stops at 5 years could help determine whether to extend treatment

Toxoplasma gondii infection can regulate the expression of tumour necorsis factor-alpha receptors on human cell in vitro

International audienceThe in vitro regulation of tumour necrosis factor (TNF)-α receptors during Toxoplasma gondii infection of human MRC5 fibroblasts and human myelomonocytic THP-1 cells was investigated. Cells were infected with the virulent RH of T. gondii. TNFR membrane receptors were analysed by flow cytometry with biotinylated TNF-α. Shedding of the soluble form of TNFR1 and TNFR2 in cell culture supernatants was measured by enzyme-linked immunosorbent assay, and expression of mRNA production of TNFR1 and TNFR2 was analysed by quantitative real-time ploymerase chain reaction, 1 h after infection. In the MRC5 cell line, T. gondii infection did not induce any up- or down-regulation of membrane TNFRs, soluble TNFRs or mRNA of TNFRs. However, THP-1 cell infection with living parasites induced a significant soluble TNFR1 release by THP-1 cells after 1 h. We detected an approximately 50% up-regulation (P < 0·01) of soluble TNFR1 in infected THP-1 cells compared to controls. No change in soluble TNFR2 levels was observed in the same conditions. Moreover, infection decreased the level of TNF membrane receptors, but had no effect on TNFR1 and TNFR2 mRNA levels. TNFR modulation by T. gondii infection, in vitro, depends on the cell type. Furthermore, our data suggest that living parasites control the shedding of the soluble form of TNFR1. This mechanism may influence the role of TNF-α in toxoplasmosis

Anti-TNF biologic agents: still the therapy of choice for rheumatoid arthritis.

Cytokines such as tumor necrosis factor (TNF) are expressed at high levels in rheumatoid joint tissue, where they contribute significantly to inflammation and articular destruction. TNF was the first cytokine to be fully validated as a therapeutic target for rheumatoid arthritis (RA). In nearly a decade since anti-TNF agents-such as infliximab, etanercept and adalimumab-were launched as the first biologic therapies to be licensed for RA, much has been learnt about how and when in the disease course this class of drug can be used to achieve optimal therapeutic benefit. Other cytokine targets, such as interleukin (IL)-6 or IL-1, have also been validated and several are in the process of being tested. However, TNF is likely to remain the preferred target of first-line biologic therapy for the foreseeable future as, in populations with active RA despite ongoing, nonbiologic, DMARD therapy, biologic inhibition of either IL-6 or IL-1 demonstrates no obviously superior outcomes to TNF blockade. Furthermore, new approaches to blockade of signaling mediated by bioactive TNF might have the potential to generate higher-magnitude clinical responses than are currently elicited

Effect of radiotherapy after breast-conserving surgery on 10-year recurrence and 15-year breast cancer death: meta-analysis of individual patient data for 10,801 women in 17 randomised trials.

After breast-conserving surgery, radiotherapy reduces recurrence and breast cancer death, but it may do so more for some groups of women than for others. We describe the absolute magnitude of these reductions according to various prognostic and other patient characteristics, and relate the absolute reduction in 15-year risk of breast cancer death to the absolute reduction in 10-year recurrence risk.Journal ArticleMeta-AnalysisResearch Support, Non-U.S. Gov'tReviewinfo:eu-repo/semantics/publishe