Comparative Pharmacokinetic Study of Two Lyophilized Orally Disintegrating Tablets Formulations of Vinpocetine in Human Volunteers

Vinpocetine is a poorly water soluble drug, commonly used in treatment of various cerebral insufficiency conditions. The aim of this work was to formulate vinpocetine in the form of orally disintegrating tablets (ODTs) and enhance its solubility and dissolution rate. This objective was addressed using lyophilization technique of either solid dispersion using polyethylene glycol 4000 (PEG 4000) or inclusion complex with 2-hydroxypropyl β-cyclodextrin (2HP-β-CD). Differential scanning calorimetry (DSC) and fourier transform-infrared (FT-IR) spectroscopy were used to characterize the solid state of the prepared solid complex. Tablets were prepared by direct compression using 23 factorial design to evaluate the effect of formulation variables (Ac-di-sol concentration 5 or 10%, the ratio of soluble polymer 1:1 or 1:3 and binder type 6% w/w Avicel PH102 or 6% w/w carboxymethyl cellulose) on release characteristics. Results showed that lyophilized ODTs disintegrated within few seconds and had significantly faster dissolution rate (70-100 % in 5 minutes) compared to the commercial oral tablet (Cavinton®). This was achieved at high content of PEG 4000 or 2 HP-β-CD in presence of 10 % w/w Ac-Di-Sol and 6 % w/w Avicel PH102. The extent of per oral absorption of vinpocetine was determined in healthy human volunteers using randomized crossover design. The relative bioavailability of selected solid dispersion and inclusion complex formulations were found to be 171.98 % and 196.06 % respectively. The study indicated that complexation of vinpocetine with 2-HP-βCD or dispersion in PEG 4000 followed by lyophilization are two successful strategies for enhancing the bioavailability of the drug from ODTs

Nonalcoholic Fatty Liver Disease and the Risk of Atrial Fibrillation

BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is now the factor behind the development of liver cirrhosis, liver cell failure, and liver transplantation in many cases. However, its relation to atrial fibrillation (AF) could not be cleared up. AIM: The purpose of the study was to evaluate prevalence of AF in the setting of NAFLD; the association between them, and to evaluate risk factors of AF in this category of patients. METHODS: This cross-sectional study was performed on 400 patients between January 2018 and June 2019. These patients were analyzed for the presence of NAFLD and presence of persistent or chronic AF. RESULTS: There were 138 patients with NAFLD, and 20 patients with persistent or permanent AF. Factors associated with AF were old age, male gender, and high values of aspartate aminotransferase, alanine-aminotransferase, γ-glutamyltranspeptidase, and serum uric acid. The participants with AF had a significantly greater prevalence of NAFLD than those without AF. CONCLUSION: Incidence and prevalence of atrial fibrillation in NAFLD patients were high. Severity of liver disease was an important predictor of new-onset atrial fibrillation

DYNAMICS OF THE ENTANGLEMENT AND ENCRYPTED INFORMATION OVER ENTANGLED QUANTUM NETWORKS

Quantum Information Technology (QIT) promises faster and a more secure means of data manipulation by making use of the quantum properties of matter. Applications of information science have been converted from classical to quantum information and invoke new features and high efficiency compared with classical information. To be able to implement any quantum algorithm or computational process, multi-entangled qubits are needed

DYNAMICS OF THE ENTANGLEMENT AND ENCRYPTED INFORMATION OVER ENTANGLED QUANTUM NETWORKS

Quantum Information Technology (QIT) promises faster and a more secure means of data manipulation by making use of the quantum properties of matter. Applications of information science have been converted from classical to quantum information and invoke new features and high efficiency compared with classical information. To be able to implement any quantum algorithm or computational process, multi-entangled qubits are needed

Role of Microalbuminuria and Hypoalbuminemia as Outcome Predictors in Critically Ill Patients

Background. Assessment of microalbuminuria and hypoalbuminemia can be used as a good tool for the prediction of the ICU outcome in critically ill patients. Purpose. To evaluate and compare the prognostic significance of microalbuminuria (albumin creatinine ratio (ACR)) and serum albumin level done on admission and after twenty-four hours for the critically ill patients. Methodology. Sixty ICU patients were involved in a prospective cohort study (mean age was 44.4 ± 16.7 years, and 78.3% were males). Patients were divided into 2 groups according to mortality (survivors and nonsurvivors) and were subjected to laboratory measurement of the mentioned biomarkers on admission and after twenty-four hours. Results. There were 34 patients (56.67%) in group A (survivors) and 26 patients (43.33%) in group B (nonsurvivors). Albumin creatinine ratio on admission (ACR1) and albumin creatinine ratio after 24 hours (ACR2) were significantly lower in survivors than nonsurvivors (P values were <0.001 for both). Serum albumin level after 24 hours of admission was significantly higher in survivors than nonsurvivors (P value 0.02) while admission serum albumin was not significantly different between both groups (P value was 0.1). There was a positive correlation between ACR2 and ICU stay and mechanical ventilatory support with a strong positive correlation with the use of vasopressor therapy (r: 0.35, 0.58, and 0.73, respectively). P values were 0.005, <0.0001, and <0.0001, respectively. There was a positive correlation between ACR2 with APACHE II and SOFA scores (r: 0.46 and 0.43, respectively); P values were 0.001 and <0.0001, respectively. There was a moderate negative correlation between serum albumin on admission and after 24 hours and the duration of mechanical ventilation (r: −0.4 and −0.39, respectively) (P values were 0.001 and 0.002, respectively). By Cox regression analysis, two parameters were found to be an independent predictor of mortality in ICU patients which were age and using vasopressor treatment (P values = 0.01 and <0.001), while the other parameters were not independent predictors of mortality (P values were more than 0.05). Conclusions. Microalbuminuria on admission and after 24 hours of ICU admission could be a good predictor of mortality in critically ill patients. The serum albumin level after 24 hours of admission can predict poor outcomes in critically ill patients

Minimizing downstream scour due to submerged hydraulic jump using corrugated

Local scour downstream of hydraulic structures due to hydraulic jump is considered one of the tedious and complicated problems facing their stability. Throughout this paper, an experimental study was conducted to study the effect of using different spaced corrugated aprons on the downstream local scour due to submerged jump. Sixty runs were carried out in a horizontal rectangular flume to determine the optimal corrugation wavelength which minimizing the scour. A case of flat apron included to estimate the influence of corrugated aprons on scour holes dimensions. Two types of non-cohesive soil were used. Experiments were performed for a range of Froude numbers between 1.68 and 9.29. The results showed that using spaced triangular corrugated aprons minimize the scour depth and length of fine sand by average percentage of 63.4% and 30.2%, respectively and for coarse sand by 44.2% and 20.6% in comparing with classical jump

Post-operative incidences of atrial fibrillation in on-pump versus off-pump coronary artery bypass grafting: A single-center, cross-sectional study

Objectives: Atrial fibrillation (AF) is one of the most common arrhythmias after coronary artery bypass grafting(CABG).Opinions divided regarding which of the two CABG techniques on-pump CABG or off-pump CABG has a lower incidence of post-operative AF. The aim of this study was to measure the incidence of post-operative AF in these techniques and its effect on the patients’ morbidity, mortality and hospital stay. Methods: We studied 60 consecutive medical records of patients that underwent on-pump and off-pump CABG .All our study patients underwent A 12-lead electrocardiogram (ECG) in the following situations: immediately after admission to the ward, after any event of arrhythmia either in the ward or in THE (ICU) and before discharge. We also used the regular monitor ECG cable for continuous, daily recording of patient rhythms. Results: (AF) occurred in two cases (6.25%) in the on-pump CABG group and in two cases (7.1%) in the off-pump CABG group ,(P=0.890). The mean length of hospital stay had been 6.4 days in the on-pump CABG group and 4.2 days in the off-pump CABG group (P value &lt;0.001). No mortality occurred. Conclusion: The incidence of post-operative (AF) was the same between on-pump and off-pump CABG.&nbsp

Full-thickness versus sliced cartilage in type I tympanoplasty, comparative study

Abstract Introduction The use of cartilage in type I tympanoplasty is associated with concern about a poor audiological outcome. Slicing the cartilage could be a tool to overcome such a feared problem. Objective To compare the healing and hearing outcomes of using sliced cartilage to full-thickness cartilage in type I tympanoplasty. Methods Seventy patients with small to medium-sized central dry tympanic membrane perforation were included in this prospective study. The patients were randomly assigned to one of these two groups: group A: full-thickness cartilage tympanoplasty was done, and group B: partial thickness cartilage tympanoplasty was done. The assessment of healing and hearing was done at 3 and 12 months postoperatively. Results The healing was achieved in 88.2% and 90.9% in group A and group B, respectively. In group A, the mean ABG was 23.44 dB preoperatively and 14.2 dB, and 12.6 dB in the first and second follow-ups, respectively. In group B, preoperative ABG was 23.58 dB compared to 7.9 dB and 6.93 dB in the two follow-ups, respectively. The results were significantly better in group B rather than group A at both follow-ups. Conclusion Hearing results are better when sliced cartilage is used in tympanoplasty type I than full-thickness cartilage