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PubMed Journals Articles About "A Study On Higher-dose Oseltamivir Treatment's Impact On Viral Clearance And Clinical Recovery In Adults Hospitalized With Influenza" RSS

10:17 EST 12th December 2018 | BioPortfolio

A Study On Higher-dose Oseltamivir Treatment's Impact On Viral Clearance And Clinical Recovery In Adults Hospitalized With Influenza PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest A Study On Higher-dose Oseltamivir Treatment's Impact On Viral Clearance And Clinical Recovery In Adults Hospitalized With Influenza articles that have been published worldwide.

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Showing "Study Higher dose Oseltamivir Treatment Impact Viral Clearance" PubMed Articles 1–25 of 94,000+

PK/PD-based adaptive tailoring of oseltamivir doses to treat within-host influenza viral infections.

Influenza A virus (IAV) is a latent global threat to human health. In view of the risk of pandemics, prophylactic and curative treatments are essential. Oseltamivir is a neuraminidase inhibitor efficiently supporting recovery from influenza infections. Current common clinical practice is a constant drug dose (75 or 150 mg) administered at regular time intervals twice a day. We aim to use quantitative systems pharmacology to propose an efficient adaptive drug scheduling. We combined the mathematical model ...


High spontaneous clearance of symptomatic iatrogenic acute hepatitis C genotype 4 infection.

Acute Hepatitis C (AHC) infections, resolves spontaneously in 15-40% of patients. Factors favoring spontaneous viral clearance remain undefined. In this study, predictors of spontaneous viral clearance in symptomatic AHC patients were investigated. Epidemiological, clinical and virologic parameters were also examined. Symptomatic AHC patients were enrolled and followed prospectively. Patients were followed every 2 weeks in the first month then monthly for the following five months, with a follow-up visit si...

Structure-Based Optimization of N-Substituted Oseltamivir Derivatives as Potent Anti-influenza A Virus Agents with Significantly Improved Potency against Oseltamivir-Resistant N1-H274Y Variant.

Due to the emergence of highly pathogenic and oseltamivir-resistant influenza viruses, there is an urgent need to develop new anti-influenza agents. Herein, five sub-series of oseltamivir derivatives were designed and synthesized to improve their activity towards drug-resistant viral strains by further exploiting the 150-cavity in the neuraminidases (NAs). The bioassay results showed that compound 21h exhibited antiviral activities similar to or better than those of oseltamivir carboxylate (OSC) against H5N...


Toll-like receptor 9 polymorphisms and Hepatitis B virus clearance in Moroccan chronic carriers.

Toll-like receptor 9 (TLR9) plays a crucial role in the innate immune response against viral infections. The failure of this system may result, in an attenuated immune response against HBV. Recent research has focused on the possibility of targeting the defects in TLR9 pathway as a novel approach for anti-HBV treatment. Our study aimed to assess the impact of both TLR9 rs5743836 and rs187084 polymorphisms on spontaneous HBV clearance in Moroccan chronic HBV carriers.

Delayed oseltamivir plus sirolimus treatment attenuates H1N1 virus-induced severe lung injury correlated with repressed NLRP3 inflammasome activation and inflammatory cell infiltration.

Severe influenza A virus infection causes high mortality and morbidity worldwide due to delayed antiviral treatment and inducing overwhelming immune responses, which contribute to immunopathological lung injury. Sirolimus, an inhibitor of mammalian target of rapamycin (mTOR), was effective in improving clinical outcomes in patients with severe H1N1 infection; however, the mechanisms by which it attenuates acute lung injury have not been elucidated. Here, delayed oseltamivir treatment was used to mimic clini...

Single dose versus multiple doses of rituximab for preemptive therapy of Epstein-Barr virus reactivation after hematopoietic cell transplantation.

Epstein-Barr virus (EBV) reactivation is an unresolved medical issue after allogeneic hematopoietic stem cell transplantation (HSCT). Rituximab treatment is recommended for EBV reactivation after HSCT but the number of doses of rituximab to use is unclear. In this study, risk factors and outcomes of patients who needed 1 dose vs >1 doses of preemptive rituximab to clear EBV viremia were compared. A higher viral load was more likely to be associated with higher doses of rituximab. Patients whose EBV viremi...

Antiviral drug screening by assessing epithelial functions and innate immune responses in human 3D airway epithelium model.

Respiratory viral infections cause mild to severe diseases, such as common cold, bronchiolitis and pneumonia and are associated with substantial burden for society. To test new molecules for shortening, alleviating the diseases or to develop new therapies, relevant human in vitro models are mandatory. MucilAir™, a human standardized air-liquid interface 3D airway epithelial culture holds in vitro specific mechanisms to counter invaders comparable to the in vivo situation, such as mucus production, mucocil...

The impact of ankle-foot orthoses on toe clearance strategy in hemiparetic gait: a cross-sectional study.

Ankle-foot orthoses (AFOs) are frequently used to improve gait stability, toe clearance, and gait efficiency in individuals with hemiparesis. During the swing phase, AFOs enhance lower limb advancement by facilitating the improvement of toe clearance and the reduction of compensatory movements. Clinical monitoring via kinematic analysis would further clarify the changes in biomechanical factors that lead to the beneficial effects of AFOs. The purpose of this study was to investigate the actual impact of AF...

Influenza A/H3N2 virus infection in immunocompromised ferrets and emergence of antiviral resistance.

Influenza viruses can cause severe life threatening infections in high-risk patients, including young children, the elderly and patients with compromised immunity due to underlying medical conditions or immunosuppressive treatment. The impaired immunity of these patients causes prolonged virus infection and combined with antiviral treatment facilitates the emergence of viruses with resistance mutations. The diverse nature of their immune status makes them a challenging group to study the impact of influenza...

Modeling the impact of preplanned dose titration on delayed response.

Dose titration becomes more and more common in improving drug tolerability as well as determining individualized treatment doses, thereby maximizing the benefit to patients. Dose titration starting from a lower dose and gradually increasing to a higher dose enables improved tolerability in patients as the human body may gradually adapt to adverse gastrointestinal effects. Current statistical analyses mostly focus on the outcome at the end-of-study follow-up without considering the longitudinal impact of dos...

Genetic variants in chemokine CC subfamily genes influence hepatitis C virus viral clearance.

Chemokine genes may influence both hepatitis C virus (HCV) spontaneous clearance in acute infection and treatment response in chronic infection. We conducted this study to evaluate whether the genetic variants in several CC family genes influence HCV spontaneous clearance and treatment response. The current research genotyped eight SNPs, including CCR1 rs3733096, rs13096371, CCR5 rs746492, rs1800874, CCL3 rs1130371, CCL5 rs3817656, CCL8 rs1133763, CCL14 rs854625, to explore their associations with HCV spont...

Therapeutic Drug Monitoring of Teicoplanin in Haematological Malignancy Patients with Febrile Neutropenia and Optimizing Dosage Regimens.

This study used high-performance liquid chromatography to measure 202 teicoplanin plasma trough concentrations (C ) in 114 haematological malignancy patients with febrile neutropenia. Patients were divided into two groups according to the mean initial dose (MID) over the first 3 days of treatment: (1) MID = 533.33 mg/day (loading-dose group, 400 mg q12h for three doses followed by 400 mg qd, n = 62) and (2) MID < 533.33 mg/day (unloaded or underloaded group, n = 52). During the first 3 days after treatment,...

Single- and Multiple-dose Pharmacokinetics and Safety of Pimodivir, a Novel, Non-Nucleoside Polymerase Basic Protein 2 Subunit Inhibitor of the Influenza A Virus Polymerase Complex, and Interaction With Oseltamivir: A Phase 1 Open-Label Study in Healthy Volunteers.

Evaluate the drug-drug interaction between pimodivir, a novel, non-nucleoside polymerase basic protein 2 (PB2) subunit inhibitor of the influenza A virus polymerase complex, and oseltamivir, to assess the feasibility of this combination therapy. Furthermore, single- and multiple-dose pharmacokinetics and safety of pimodivir in healthy volunteers were assessed.

Spontaneous Viral Clearance in Sixteen HIV-Infected Patients with Chronic Hepatitis C.

Spontaneous viral clearance of the chronic hepatitis C virus (HCV) in human immunodeficiency virus (HIV)-infected patients is a rare event. We aimed to identify the clinical, therapeutic, demographic, and laboratory features associated with spontaneous HCV clearance in 16 HIV-infected patients with chronic hepatitis C (CHC, the largest case series, to our knowledge).

Hypofractionated radiotherapy with concomitant boost for breast cancer: A dose escalation study.

Patients with breast cancer with pathological stage pT and at least one risk factor for local recurrence such as N1 disease, lymphovascular invasion, extensive intraductal component, close margins, non-hormone sensitive disease, grading G3 were enrolled. Patients were treated with hypofractionated RT to whole breast with a dose of 40.05 Gy in 15 fractions. The dose was escalated to the tumour bed through a daily concomitant boost technique at three dose levels: 48 Gy (3.2 Gy/die), 50.25 Gy(3.35 Gy/die) and ...

Metabolic Syndrome and the Iodine-Dose/Creatinine Clearance Ratio as Determinants of Contrast-Induced Acute Kidney Injury.

Finding patients at risk of developing contrast-induced acute kidney injury (CI-AKI) is important because of its associated complications. In the present study, the contribution of different variables, such as the presence of metabolic syndrome (MetS), the volume creatinine clearance (V/CrCl) ratio, the iodine-dose (I-dose)/CrCl ratio, or hypertension, to CI-AKI was evaluated.

Dosimetric and radiobiological comparison in different dose calculation grid sizes between Acuros XB and anisotropic analytical algorithm for prostate VMAT.

To investigate feasible treatment planning parameters, we aimed to evaluate the dosimetric and radiobiological impact of the dose calculation algorithm and grid size in the volumetric modulated arc therapy (VMAT) plan for prostate cancer. Twenty patients were selected, and the treatment plans were initially generated with anisotropic analytical algorithm (AAA) and recalculated with Acuros XB (AXB) algorithm. Various dose grids were used for AXB (1, 2, and 3 mm) and AAA (1, 3, and 5 mm) plan. Dosimetric para...

Age and Bodyweight-Dependent Allometric Exponent Model for Scaling Clearance and Maintenance Dose of Theophylline from Neonates to Adults.

In population pharmacokinetic modeling, bodyweight is often incorporated as an important covariate using fixed (0.75) or single exponent model. In recent years, several variations of allometric models have been suggested for the prediction of drug clearance across a wide age range. The objective of this study is to develop and evaluate single exponent, bodyweight-dependent allometric exponent (BDE), age-dependent exponent (ADE) and segmented regression models for predicting clearance and maintenance dose of...

Dose Increase beyond Labelled Dose of Biologics Is Associated With Incremental Pharmacy Costs: Results from a Real-World Study In the UK.

Evidence regarding dosing patterns of biologics among moderate to severe psoriasis patients and impact on costs in the United Kingdom (UK) is limited.

A quantitative assessment of dynamical differences of RSV infections in vitro and in vivo.

Experimental results in vitro and in animal models are used to guide researchers in testing vaccines or treatment in humans. However, viral kinetics are different in vitro, in animals, and in humans, so it is sometimes difficult to translate results from one system to another. In this study, we use a mathematical model to fit experimental data from multiple cycle respiratory syncytial virus (RSV) infections in vitro, in african green monkey (AGM), and in humans in order to quantitatively compare viral kinet...

A new coumarin derivative plays a role in rhabdoviral clearance by interfering glycoprotein function during the early stage of viral infection.

Coumarin forms an elite class of naturally occurring compounds that possess promising antiviral therapeutic perspectives. In this study, a coumarin derivative 7-[6-(2-methylimidazole) hexyloxy] coumarin (D5) was designed and synthesized to evaluate antiviral activity on a rhabdovirus, spring viraemia of carp virus (SVCV). Our results demonstrated that D5 had a robust antiviral activity with >90% inhibitory rate of SVCV expression in the host cells. And D5 significantly reduced viral-induced apoptosis and re...

Pharmacokinetic Interaction Between Fingolimod and Carbamazepine in Healthy Subjects.

This open-label, single-sequence study in healthy subjects investigated the effects of steady-state carbamazepine on the pharmacokinetic (PK) profile of a single 2-mg dose of fingolimod. In period 1, a single oral dose of fingolimod 2 mg (day 1) was followed by PK and safety assessments up to 36 days. In period 2, carbamazepine was administered in flexible, up-titrated doses (600 mg twice daily maximum) for 49 days. Fingolimod was administered on day 35, followed by a study completion evaluation (day 71...

Evaluation of Serum IFN- and IL-5 Levels in Response to Entecavir Therapy in Patients with Chronic Hepatitis B Virus Infection.

Current treatment guidelines recommend the use of entecavir (ETV) as a first-line therapy for chronic HBV infection. Still little is known about its role in restoration of the exhausted HBV immune response. The aim of our study was to assess HBeAg serologic response and serum levels of IFN-γ and IL-5 before and after one year treatment with ETV in chronic hepatitis B patients (CHB) in a trial to find possible predictors for response to ETV treatment in those patients (hepatits B viral clearance and HBeAg s...

Opioids in Breast Milk: Pharmacokinetic Principles and Clinical Implications.

Safety of maternal drug therapy during breastfeeding may be assessed from estimated levels of drug exposure of the infant through milk. Pharmacokinetic (PK) principles predict that the lower the clearance is, the higher the infant dose via milk will be. Drugs with low clearance (

Clearance in Drug Design.

Due to its implications for both dose level and frequency, clearance rate is one of the most important pharmacokinetic parameters to consider in the design of drug candidates. Clearance can be classified into three general categories, namely metabolic transformation, renal excretion and hepatobiliary excretion. Within each category, there are a host of biochemical and physiological mechanisms that ultimately determine the clearance rate. Physiochemical properties are often indicative of the rate-determining...


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