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Zidovudine - Crossref

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Last Updated: 08 August 2022

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Reduction of Maternal–Infant Transmission of HIV Type 1 With Zidovudine Treatment

Pregnant women aged 14 to 34 weeks with a CD4 count above 200 and no indication of antiretroviral therapy were randomized to zidovudine treatment or placebo. Zidovudine was shown to reduce HIV transmission from mother to child by 67 percent. The majority of maternal adverse effects were related to obstetric problems that were not associated with either placebo or intervention groups.

Source link: https://doi.org/10.1093/med/9780190947088.003.0005


Zidovudine Inhibits Telomere Elongation, Increases the Transposable Element LINE-1 Copy Number and Compromises Mouse Embryo Development.

During early embryo development in a murine model, we investigated the effects of AZT on embryo growth, TL, and copy number of an active TE, Long Interspersed Nuclear Element 1. Methods: Experimental research Methods In vivo fertilized mouse zygotes from B6C3F1/B6D2F1 mice were cultured for 48 hours in KSOM with no AZT, AZT 1 00b5M, or AZT 10 00b5M were tested. The percentage of morulas at 48 hrs, TL, and LINE-1 copy number were compared among groups. The TL in AZT 10. 0b5M embryos is shorter than those in control embryos, according to the author. The LINE-1 copy number is significantly lower in oocytes than in control embryos, and it is much lower in oocytes than control embryos. After 48 hours of treatment, AZT at concentrations approaching those used to prevent perinatal HIV transmission compromises mouse embryo formation, prevents telomere elongation, and raises LINE-1 copy number. A further look at the effects of these circumstances on the course of aging of children exposed to AZT early in childhood should be investigated further.

Source link: https://doi.org/10.21203/rs.3.rs-696789/v1


Efficacy and Tolerability of Tenofovir Disoproxil Fumarate Based Regimen as Compared to Zidovudine Based Regimens: A Systematic Review and Meta-Analysis

The earliest epidemic viral load is estimated as 50 Human Immunodeficiency Virus ribonucleic acid copies/ml. For critical assessment and data extraction, respectively, Joanna Briggs institute meta-analysis of statistics collection and review device, as well as a key appraisal and data extraction device were used for critical assessment and data extraction. Compared to zidovudine arm, we found higher viral load suppression in the tenofovir arm. Tenofovir arm achieves a viral load of 50 HIV copies/ml more than zidovudine arm. According to a corresponding TDF arm, viral load suppression is superior in viral load reduction to a slew of HIV RNA copies/ml. In addition, TDF-based regimens were more likely to be accepted than ZDV based regimens. However, a forest plot of death shows that it was not significant. Compared to ZDV/3TC/EFV, the use of TDF/FTC/EFV as the first line treatment for nau00efve HIV-1 infected adult patient demonstrated superior viral load reduction and tolerability as compared to ZDV/3TC/EFV.

Source link: https://doi.org/10.1155/2017/5792925


Abacavir versus Zidovudine-Based Regimens for treatment of HIV-Infected Children in resource limited settings: A Retrospective Cohort Study

Abstract Background: The preferred first line nucleoside reverse transcriptase backbones for treating HIV infection in children are Abacavir and Zidovudine backbones are based on Abacavir and Zidovudine. In a cohort of HIV-infected children, we compared the proportion of mortality and the incidence of Opportunistic Infections with ABC versus AZT based regimens. To compare survival results and identify independent predictors, Kaplan-Meier and Cox regression was used to compare survival data and find independent predictors. The mean age of the study participants was 6. 53 - 2. 83 years. The incidence of opportunistic infections related to ABC's 8. 77 percent in 100,000 person years and 6. 9/100,000 py. The only predictors of OIs were Baseline CD4 counts, Severe acute malnutrition AHR=15. 92, 95% CI [5. 34-47. 50], and exposure to tuberculosis therapy. In Ethiopia, ABC and AZT-based ART regimens seem to have comparable survival rates among HIV-infected children.

Source link: https://doi.org/10.21203/rs.2.20038/v1


Persistence of Macrocytosis after Discontinuation of Zidovudine in HIV-Infected Patients

84 patients with ZDV on 104 HIV-infected patients treated for more than a year developed macrocytosis at ZDV discontinuation. Patients were divided into two groups: those that did and did not normalize MCV at 3 to 6 months after ZDV's cessation were divided into two groups: those who did and did not normalize MCV at 3 to 6 months after ZDV's discontinuation were divided into two groups. The duration of ZDV therapy had no effect on macrocytosis' persistence. After halting ZDV for 12. 5 months, the MCV's average time to normalize was 12. 5 months.

Source link: https://doi.org/10.1177/2325957417702486


A Single Zidovudine (AZT) Administration Delays Hepatic Cell Proliferation by Altering Oxidative State in the Regenerating Rat Liver

The results reveal that AZT dramatically reduced DNA synthesis and the number of mitosis in liver exposed to PH in a synchronized manner with the introduction of organelle-selective lipid peroxidation activities and liver enzyme release to the bloodstream. Then at the dose used in clinical practice decreased liver transplantation but triggered oxidative events involved in the cell's proliferation process in a way that each membrane system inside the cell maintains its integrity while maintaining the cell proliferative process.

Source link: https://doi.org/10.1155/2017/8356175


Stability indicating Method development and Validation of Lamivudine, Zidovudine and Nevirapinein Tablet dosage form

Inertsil ODS 3V C18 column as stationary phase, and 0. 01 million 1-octane Sulphonic acid: Methanol as mobile phase. According to the concentration ranges of 75-225 mg/ml, 150-450 g/ml, 100-300 mg/ml, and 100-300 b5g/ml respectively, the mobile phase was kept at a flow rate of 1 million ml, run time 15 min, and Nevirapine was found to be linear in the concentration range of 75-250-225 mg/ml, 100-300 mg/ml, 150-450 mg/ml, Accuracy of the method was determined by a benchmark analysis and the results were found in the range of 10. 1-101. 4%, 100. 1-100. 7%, and 99. 9% for Lamivudine, Zidovudine, and Nevirapine respectively.

Source link: https://doi.org/10.52711/0975-4377.2022.00039


Abstract 3603: Zidovudine (AZT)-induced aneuploidy, mediated by Stathmin 1 (STMN1), involves a loss of polymerized β-tubulin.

In around 23% of normal human mammary epithelial cells exposed to 20 hr to 200 °CM AZT, we have noticed a decrease in u03b2-tubulin polymerization in about 23% and a down-regulation of hsa-770-5p, a microRNA that is known to target STMN1, in the same AZT-exposed cells. Microtubule polymerization is prevented by STMN1, which results in destabilization of the mitotic spindle and chromosome misalignment. We therefore speculated that if AZT exposure lowers the blood vessel polymerization leading to aneuploidy, there will be an increase in STMN1 expression, which would result in a lack of microtubule polymerization leading to aneuploidy. MCF-10A cells were compared to 100 %u03bcM AZT for 1 to 3 passages in this study. In AZT-exposed cells, the unexposed controls showed that total STMN1 increased at P1 was 3. 5-fold at P1, or by Western Blot. Some cells stained strongly for STMN1, while others had virtually no staining, and overall STMN1 fluorescence was elevated in AZT-exposed cells, relative to unexposed controls. When tubulin polymerization was measured by IHC, using u03b2-tubulin antiserum, 10. 1% of AZT-exposed cells showed a loss of tubulin polymerization, while just 0. 7% of unexposed cells had the same effect. Ongoing experiments will investigate these relationships more by localizing STMN1 and u03b-tubulin in specific cells and examining the same cultures for spindle anomalies at mitosis.

Source link: https://doi.org/10.1158/1538-7445.am2013-3603


Abstract 2980: Role of XPA and p53 genes in the induction of centrosomal amplification in mice exposed to Zidovudine (AZT)

Bone marrow cells from wild type C57BL/6J mice and their transgenic counterparts with genotypes XPA:u2212/u2212p53 +/+ are cultured in vitro to produce homogeneous populations of mesenchymal-derived fibroblasts. In wild type cells exposed to 0, 10 or 100 m AZT, respectively, values for centrosomal amplification were 12. 2, 15. 2 and 19. 7%. After exposure to 0, 10 and 100 % AZT cells, respectively, for XPA x. 2212/u2212p53 +/+cells and 33. 9 percent for XPA u2212/>cells, and 33. 9 percent for XPA 22. 6, 28. 7, and 39. 5% for XPA u2212/u2212/u2212p53+/-cells, respectively. According to 0. 10, 10 and 100 makht AZT cells, u2212/u2212 cells amplification after exposure to 0. 44 million and 29. 0%, respectively. These findings show that whereas nucleotide excision repair is not considered to effect NRTI intracellular processing, the absence of intact nucleotide excision repair contributes to genomic instability in AZT-exposed cells.

Source link: https://doi.org/10.1158/1538-7445.am10-2980

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions