Investigation of inclusion behaviour of gefitinib with epichlorohydrin-β-cyclodextrin polymer: Preparation of binary complex, stoichiometric determination and characterization
Publication date: Available online 21 July 2018Source: Journal of Pharmaceutical and Biomedical AnalysisAuthor(s): Bina Gidwani, Amber Vyas, Chanchal Deep KaurAbstractGefitinib is anticancer drug which is sparingly soluble in water. This limits its dissolution and bioavailability. Binary inclusion complex of gefitinib with Epi-β-CD was prepared by freeze-drying method. Stoichiometric ratio of 1:1 M was established by continuous variation (Job’s) plot. The stability constant of complex as determined by phase solubility study was found to be 15871.3 M−1. Complex was characterized by FTIR, DSC, DTA and dissolution study. Results revealed that in complex the drug no longer exist in crystalline state and is converted into amorphous form; which shows higher dissolution efficiency as compared to crystalline drug. The solubilizing efficiency for freeze dried complex was found to be 175.57 and the relative drug crystallinity degree was 87.91% as estimated by thermal analysis. Complexation led to decrease in surface tension; from 54.8 dynes/cm (pure gefitinib) to 40.3 dynes/cm (FD complex) due to adsorption phenomenon. The results obtained in this study confirmed that complexation of gefitinib with Epi-β-CD is a prominent approach and suitable tool for tailoring the issue related to its delivery and can be explored for development of an effective delivery system.
Authors: San C, Lê MP, Matheron S, Mourvillier B, Caseris M, Timsit JF, Wolff M, Yazdanpanah Y, Descamps D, Peytavin G Abstract HIV infection has evolved into a chronic disease with comorbidities since the combination antiretroviral therapy era. Complications still occur and patients may need to be admitted to an intensive care unit. Acute respiratory failure is the first cause of these admissions, questioning the administration of solid oral dosage formulations. This issue is also observed in geriatric units where the prevalence of dysphagia is high and underestimated. The problem of antiretroviral administr...
Authors: Petitdemange A, Martin A, Ruch Y, Chatron E, Karol A, Hansmann Y PMID: 31722863 [PubMed - as supplied by publisher]
Authors: Soumah A, Avettand-Fenoel V, Veber F, Moshous D, Mahlaoui N, Blanche S, Frange P Abstract OBJECTIVES: To assess the outcome of HIV-infected individuals attending one of the largest French pediatric HIV centers in 2016-2017 and to compare the rates of antiretroviral coverage and virological suppression with the UNAIDS targets. PATIENTS AND METHODS: The clinical and immuno-virological status of 163 HIV-1-infected children and adolescents attending Necker Hospital in Paris, France, were investigated. Virological suppression was defined as an HIV-1 viral load
Authors: Voitey M, Bouiller K, Chirouze C, Fournier D, Bozon F, Klopfenstein T Abstract INTRODUCTION: Little is known about the functional symptoms associated with Lyme borreliosis (LB) in Europe. We aimed to assess functional symptoms associated with presumed LB and to compare patients with and without confirmed LB. MATERIALS AND METHODS: We performed a retrospective monocenter study. Patients consulting for presumed LB were included. RESULTS: Between November 2015 and June 2018, 355patients were included (mean age: 51years, 52% of women) of which 48had LB: erythema migrans (42%), early disseminated LB (50...
Authors: Rahman M, Beg S PMID: 31722657 [PubMed - in process]
Publication date: Available online 15 November 2019Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyAuthor(s): Konstantinos I. Tosios, Eleni-Marina Kalogirou, Nikolaos G. Nikitakis
ConclusionThe method achieved high performance for automation of tooth segmentation on dental panoramic images. The proposed method might be applied in the first step of diagnosis automation and in forensic identification, which involves similar segmentation tasks.
ConclusionsSequestra and periosteal new bone formation were characteristic CT features of osteomyelitis that were found more commonly in the medication-related condition. These findings may be useful in the evaluation of osteomyelitis and medication-related osteonecrosis of the jaw.
ConclusionAcceptance QA testing was effective in detecting discrepancies and establishing optimal exposure doses that were within the DRL and AD established by the National Council on Radiation Protection and Measurements and the ESE established by the state of Texas.
Publication date: Available online 15 November 2019Source: British Journal of Oral and Maxillofacial SurgeryAuthor(s): L. May, J. Blatter, P. Bize, G. Tsoumakidou, A. Denys, M. BroomeAbstractTreatment of bony tumours of the oral and maxillofacial area usually involve resection. However, access to certain areas may be difficult because of the size or site of the tumour. A poor view of the lesion during operation is another limiting factor, which can lead to incomplete resection in difficult cases. Percutaneous cryoablation is a common procedure for treating benign and malignant bony lesions outside the oral and maxillofacia...