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Doxorubicin showed better activity than daunorubicin against mouse tumors, and especially solid tumors. It also showed a higher therapeutic index, yet the cardiotoxicity remained. [50] Doxorubicin and daunorubicin together can be thought of as prototype compounds for the anthracyclines. Subsequent research has led to many other anthracycline ...
As an example, the incidence of congestive heart failure is 4.7%, 26% and 48% respectively when patients received doxorubicin at 400 mg/m 2, 550 mg/m 2 and 700 mg/m 2. [4] Therefore, the lifetime cumulative doxorubicin exposure is limited to 400–450 mg/m 2 in order to reduce congestive heart failure incidence to less than 5%, although ...
Daunorubicin is in the anthracycline family of medication. [3] It works in part by blocking the function of topoisomerase II. [2] Daunorubicin was approved for medical use in the United States in 1979. [2] It is on the World Health Organization's List of Essential Medicines. [4] It was originally isolated from bacteria of the Streptomyces type. [5]
Idarubicin is able to pass through cell membranes easier than daunorubicin and doxorubicin because it possesses less polar subunits, making it more lipophilic. [ 17 ] [ 66 ] It is hypothesized that doxorubicin, which possesses a hydroxyl group and a methoxy group not present in idarubicin, can form hydrogen bonding aggregates with itself on the ...
Idarubicin / ˌ aɪ d ə ˈ r uː b ɪ s ɪ n / or 4-demethoxydaunorubicin is an anthracycline antileukemic drug. It inserts [1] itself into DNA and prevents DNA unwinding by interfering with the enzyme topoisomerase II. It is an analog of daunorubicin, but the absence of a methoxy group increases its fat solubility and cellular uptake. [2]
Streptomyces isolates have yielded the majority of human, animal, and agricultural antibiotics, as well as a number of fundamental chemotherapy medicines.Streptomyces is the largest antibiotic-producing genus of Actinomycetota, producing chemotherapy, antibacterial, antifungal, antiparasitic drugs, and immunosuppressants. [1]
R-miniCHOP is indicated in elderly patients (>80 years) with diffuse large B-cell lymphoma due to less toxicity from the reduced dose in comparison to R-CHOP.. R-Maxi-CHOP is used in mantle cell lymphoma and is given in 21-day intervals, alternating with R-HDAC (rituximab + high-dose cytarabine).
This unique pathway might explain the better tolerability of this drug compared with doxorubicin. [ 10 ] The 4 aglycones are formed by losing the amino sugar moiety through a hydrolytic process or redox process, creating the doxorubicin and doxorubicinol aglycones and 7-deoxy-doxorubicin and 7-deoxy-doxorubicinol aglycones, respectively.