Articles

Economic feasibility of using agricultural wastes for catalyst development

Published on: 24th March, 2023

Resource recovery provides an opportunity to transform limited and abundant materials in form of waste into biobased products. In the production system, this technique could offer an economic means to utilize wastes to generate valuable products which are fundamental to a sustainable economy.
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Effectiveness of massage chair and classic massage in recovery from physical exertion: a pilot study

Published on: 24th March, 2023

Quick and cost-effective recovery is foundational to high-quality training and good competition results in today’s sports. The aim of the research was to elucidate the effects of hand and massage chair massage on the biomechanical parameters of muscles of lower limbs and back, indicators of Pain Pressure Thresholds (PPT) and subjectively perceived fatigue. A total of 32 female recreational athletes (18 – 50 years old) were assigned to a hand massage, massage chair, or lying down the group. They were measured for muscle biomechanical properties (MyotonPro), PPT (Wagner Instruments) and subjectively perceived fatigue (VAS scale) before and after fatigue tests and treatment. The recovery procedure and subjective satisfaction with treatment were rated on a Likert scale. Changes in the median value of m. rectus femoris and m. gastrocnemius stiffness with treatment showed that hand massage could be more effective in reducing stiffness, as compared to chair massage. Hand massage may have benefits for recovery from physical exertion, but due to the individuality of subjects, detailed methodological studies are needed to evaluate the effects of massage chair vs. hand massage.
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Mercury toxicity and amyotrophic lateral sclerosis

Published on: 23rd March, 2023

Recent clinical, experimental and epidemiological studies report that ALS is thought possibly due to a multi-stage process, arising from a combination of genetic susceptibility and environmental factors, which alone or superimposed, perhaps on genetic polymorphism yet to be identified, may contribute to the incidence rate of sporadic ALS. In particular, a large amount of evidence suggests that mercury is toxic to motor neurons and may be a risk factor for ALS, playing a part in its pathogenesis. In fact, there have been case reports of ALS or ALS-like symptoms associated with mercury exposure, thus raising the possibility that mercury could be one of the non-genetic factors of the multistep process that is thought to underlie ALS. In order to give recent elucidations on the putative relationship between mercury exposure and ALS, we reviewed all the papers reported in the literature and published on Pubmed from 2006 to 2022. Despite a number of pathogenetic mechanisms that have been linked to mercury, evidence linking exposure to mercury to ALS is not consistent and discordant and, based on the evaluation of the articles, which emerged from our analysis that to date no convincing correlation between mercury and ALS has been established and no conclusive evidence has been enlightened suggesting increased mercury exposure is associated with ALS.
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Three-phase partitioning for isolating peroxidase from lemon peels

Published on: 21st March, 2023

Background and objective: Peroxidase is an oxidoreductase that uses different compounds as substrates and thus can be utilized for different applications. The goal of this work is to isolate peroxidase from lemon peels using Three-Phase Portioning (TPP). Methods: TPP was set by adding varying amounts of salts and alcohol and the enzyme activity recovery was measured for each variable. Different parameters were optimized successively in order to achieve the highest enzyme activity recovery including salt type, salt concentration, pH, alcohol/crude extract ratio and type of alcohol and then, combining all optimized conditions together.Results: Salt that gave maximal recovery was sodium potassium tartrate, optimal salt concentration was 15%, optimal pH was 8, optimal alcohol/crude extract ratio was 1 and t-butanol was preferred to 1-butanol. Efficiently, upon combining all optimized factors, an activity recovery of 175% was obtained.Conclusion: This protocol provides an easy, feasible method to efficiently isolate peroxidase from lemon peels using TPP.
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Requirement for object-oriented database management systems in forensic science

Published on: 21st March, 2023

The complex requirements of a database system for recording regulated chemicals exceed the capabilities of a relational database system. Inheritance, which is part of object-oriented programming, must also be logically transferred to chemical objects. This issue is illustrated here by means of examples of the Chemical Weapons Convention (CWC) and the German version of the New Psychoactive Substances Law (NpSG).
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A case of hepatic intraductal papillary neoplasm of the bile duct

Published on: 21st March, 2023

Introduction: Intraductal Papillary Neoplasm of the Bile ducts (IPNB) is a rare entity characterized by exophytic growth of the bile ducts.Case presentation: In this report, we present a 57-year-old male with no prior medical history consulted for upper right abdominal pain, jaundice and pruritus. Abdominal Ultrasound (US) and magnetic resonance imaging/Bili-magnetic resonance were performed. They revealed that the circumferential parietal thickening of the common hepatic duct had extended approximately 4 cm with moderate dilatation of the left intrahepatic bile ducts. Computed tomography showed no evidence of distant metastasis.Biopsy revealed a high-grade intraductal papillary neoplasm. After 40 days, the patient had left hepatectomy with resection of the main bile duct and the gallbladder. Macroscopic examination of the surgical specimen showed a dilatation duct at the hilum with thickening of their walls.The histopathology report revealed multiple intra-hepatic papillary neoplasms with high-grade dysplasia with an invasive carcinoma component in the left hepatic duct without extending to the biliary wall, classified as pT1N0.Conclusion: This premalignant lesion has the potential to transform into invasive carcinoma if not properly diagnosed.Our case illustrates how early identification can lead to potential surgical resection.
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A pregnant with markedly elevated alkaline phosphatase: a case report

Published on: 21st March, 2023

Alkaline Phosphatase (ALP) is produced from the liver, kidney, bone and placenta. During pregnancy, ALP may raise markedly with no clear reason. Here, we present a rare case of highly elevated ALP in a 21 years old pregnant woman during the third trimester who had no important past medical history. It was 2800 U/L. Bone, renal, or liver was all normal. Close monitoring of the fetus and his mother until birth was the way of treatment. We had seven weeks postpartum to decline in ALP concentration but did not return to the normal range. The placenta showed lesions of chronic villitis. The extreme incline in ALP during the gestational stages is riskier because the threat here is posed to 2 lives. In such conditions, constant monitoring of ALP in the maternal serum backed with necessary medication is required. 
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Is binge watching among medical students associated with depression and anxiety?

Published on: 21st March, 2023

Objectives: Investigate binge-watching (BW) behavior among students and assess its correlation with anxiety and depressive symptoms. Methods: Medical students who met the definition of BW were divided, according to their viewing frequency, into three groups: G1: once a month or less, G2: once a week or once every two weeks, and G3: twice a week or more. Beck Depression Inventory and State-Trait Anxiety Inventory were used. Results: Ninety-four participants were recruited. The prevalence of BW was 72.3%. Depression and anxiety scores didn’t differ between binge watchers and the non-binge watcher group. G2 was found to be significantly less depressed (p = 0.014) and had a lower anxiety state (p = 0.05) and anxiety trait scores (p = 0.026) than the control group. Feeling tired was the most prevalent reason to stop viewing among G3 (p = 0.001). Conclusion: Binge-watching could be when used in a specific manner, a way to cope with negative feelings. 
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Pomaded and unctuous- spindle cell lipoma

Published on: 17th March, 2023

Spindle cell lipoma and pleomorphic lipoma emerge as benign, adipocytic neoplasms representing a morphologic continuum of a singular neoplasm. In addition to myofibroblastoma and cellular angiofibroma, spindle cell lipoma or pleomorphic lipoma configures as a constituent of chromosome 13q/RB1 family of tumors. Initially scripted by Enzinger and Harvey in 1975 with an obsolete terminology of dendritic fibromyxolipoma, aforesaid adipocytic neoplasms articulate an estimated 1.5% of lipomatous tumors. In contrast to conventional lipoma, spindle cell lipoma or pleomorphic lipoma is an uncommonly discerned variant, demonstrating a proportion of 1: 60.
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Renal denervation for resistant hypertension and heart failure with a reduced ejection fraction

Published on: 16th March, 2023

Hypertension is a risk factor for the development of heart failure and has a negative impact on the survival of these patients. Although patients with these two conditions usually take different antihypertensive medications, some patients do not achieve adequate blood pressure control and their hypertension becomes resistant or refractory. In this scenario, percutaneous renal denervation has emerged in recent years as an alternative to achieve blood pressure control goals. We present the case of a 53-year-old woman with a medical history of essential hypertension, hypercholesterolemia, unipolar depression, and diabetes, who was diagnosed with dilated cardiomyopathy with reduced left ventricular ejection fraction (33%). Despite the initiation of multiple antihypertensive medications and placement of a cardiac resynchronization therapy pacemaker, the patient remained hypertensive with a left ventricular ejection fraction of 40%. At that time, percutaneous renal denervation was performed without complications, and one year after the procedure, the patient had improved better blood pressure control and the left ventricular ejection fraction increased to 51%. This case illustrates one of the clinical scenarios in which it has been suggested that renal denervation may be more beneficial, as in the situation of patients with refractory hypertension and heart failure.
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