Ritonavir, also known as Norvir, is a type of medicine called a protease inhibitor (PI). PIs act by blocking protease, a protein that HIV needs to make more copies of itself. Ritonavir was approved by the FDA on March 1, 1996, for use with other antiretroviral agents in the treatment of HIV infection in adults and children 2 years of age or older. Ritonavir is now approved with other anti-HIV drugs in the treatment of HIV-1 infection in children in individuals over 1 month in age. Studies have shown that ritonavir works as a booster for some other PIs. Taking ritonavir makes it possible to take a lower dose of the other PIs. This medicine does not cure or prevent HIV infection or AIDS and does not reduce the risk of passing the virus to other people.
In just six months, the world's largest randomized control trial on COVID-19 therapeutics has generated conclusive evidence on the effectiveness of repurposed drugs for the treatment of COVID-19.
Among them is the combination of lopinavir and ritonavir, which have been in use in an attempt to reduce the severity of the disease. However, a new South Korean study published on the preprint server bioRxiv in September 2020 shows that this combination is ineffective against the virus.
Health care professionals should become more familiar with medications that cause irregular heart rhythms called arrhythmias, according to "Drug- Induced Arrhythmias," a new scientific statement from the American Heart Association, published today in the Association's flagship journal Circulation.
Now, a new study published on the preprint server bioRxiv in August 2020 reports on the identification of 14 compounds that can inhibit the key viral enzyme called the Main Protease (MPro) at micromolar concentrations.
Several new papers in Journal of Antimicrobial Chemotherapy, published by Oxford University Press, suggest successful treatments for COVID-19.
The current COVID-19 pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to spread and cause disease and death in many countries even today. At present, there is no effective treatment. A recent study published on the preprint server bioRxiv in August 2020 reports the potential of a new class of drugs called CAR NK cells, which could be used off-the-shelf to treat this disease.
A new study published on the preprint server medRxiv in July 2020 reports the potential of cell-free DNA as a marker of the severity of disease in COVID-19. This could help triage patients as well as provide a prognostic marker.
The drug Hydroxychloroquine has long been studied as a treatment for malaria and autoimmune diseases. When the coronavirus pandemic spread across the globe, many countries resorted to using the drug in the hopes that it would improve outcomes of hospitalized patients affected by the coronavirus disease (COVID-19).
Lopinavir is a drug against HIV, hydroxychloroquine is used to treat malaria and rheumatism. Until recently, both drugs were regarded as potential agents in the fight against the coronavirus SARS-CoV-2.
Dr. Matteo Daldosso and Dr. Sebastian Wegner discuss novel solutions for the characterization of polymorphs and amorphous form APIs.
Now, a recent trial published on the preprint server medRxiv* in July 2020 reports that a majority of hospitalized COVID-19 patients have a high titer of neutralizing antibodies, at the time of admission, within 10 days of symptomatic disease.
Results from Oxford University’s RECOVERY trial into existing drugs for the treatment of COVID-19 has found that dexamethasone reduced deaths by a third in ventilated coronavirus patients and by a fifth in coronavirus patients requiring oxygen. This is the first drug of its kind to be demonstrated to have a significant impact on COVID-19 mortality.
The British Heart Foundation is funding a trial for an experimental drug that could prevent the life-threatening blood clots that are seen in the lungs of the patients with COVID-19 or those infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The drug named TRV027 is said to normalize the hormonal imbalance that can be seen in patients developing COVID-19, experts said.
A new study by scientists from the U.S and U.K. and published on the preprint server bioRxiv in June 2020 reports that there is no evidence of efficacy for the drug hydroxychloroquine (HCQ) against infection with SARS-CoV-2 in hamsters or macaque models. This finding does not support the current widespread prophylactic and therapeutic use of HCQ in COVID-19.
A new study by an international team of researchers and published on the preprint server medRxiv* in June 2020 describes the possible reasons for inconsistent or null findings in clinical studies of antiviral drugs to date. It proposes a new approach to decide the sample size in light of its findings.
A recent study published on the preprint server bioRxiv in June 2020 reports the development of a prototype vaccine containing multiple antigenic sites, based on the spike protein of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that is causing the current COVID-19 pandemic. If successful, this could lead to the development of an effective, non-allergenic vaccine that induces both humoral and cellular immunity.
A new study published on the preprint site medRxiv in May 2020 reports on the efficacy of interferons in treating COVID-19. The research could help evaluate the place of such therapy in the management of this disease.
Since the outbreak of the COVID-19 pandemic and its rapid spread, the scientific community has been working on developing an effective treatment for the virus responsible for the disease.
As the world struggles to overcome the current COVID-19 pandemic with non-pharmacological interventions, in the absence of an effective drug or vaccine, existing immunomodulators are being repurposed. A new study published on the preprint server medRxiv* in May 2020 shows no clinical benefit to the use of one such drug, called interferon beta 1b (IFN beta1b).
A new study published on the preprint server medRxiv* in May 2020 reports the beneficial effects of the monoclonal antibody sarilumab in severe COVID-19 pneumonia.