Cancer drug resistance an evolving paradigm
At the time of diagnosis with prostate cancer, most men have early-stage, asymptomatic disease. Prostate cancer is typically identified through prostate-specific antigen (PSA) testing and a digital rectal examination, and confirmed with a needle biopsy. When biopsy results are positive, the affected tissue is assessed microscopically and a Gleason score is calculated. In conjunction with other disease features and diagnostic test results, this score helps urologists determine the disease stage and prognosis, and facilitates the selection of initial therapy.2 Active surveillance, external radiation therapy, brachytherapy, radical prostatectomy, and androgen deprivation therapy (ADT) are relevant treatment options for men in the early stages of prostate cancer. Treatment selection is influenced by the risk of disease recurrence, the patient’s life expectancy, and quality-of-life considerations.3
Even with treatment, prostate cancer often progresses. Among patients with biochemical recurrence of localized disease, more than one third (33%) of men who are treated with surgery or radiation are not cured. In men who are treated with ADT, nearly all will go on to develop castration-resistant prostate cancer (CRPC). CRPC is characterized by a rising PSA level despite a castrate testosterone level of
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Deadly drug resitant bacteria spread CDCby ChkrdDemon
Why are bacteria becoming resistant to antibiotics?
A: Antibiotic use promotes development of antibiotic-resistant bacteria. Every time a person takes antibiotics, sensitive bacteria are killed, but resistant germs may be left to grow and multiply. Repeated and improper uses of antibiotics are primary causes of the increase in drug-resistant bacteria.
While antibiotics should be used to treat bacterial infections, they are not effective against viral infections like the common cold, most sore throats, and the flu
Triclosan Under The Microscope — The Biological SCENE
Beyond human toxicity and bacterial drug resistance are the potential effects of triclosan after it is washed down the drain. About half of the triclosan in wastewater survives treatment, according to work led by Rolf U.