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Objective: Immunohistochemistry of post-mortem lung tissue from Covid-19 patients with diffuse alveolar damage demonstrated marked increases in chondroitin sulfate and CHST15 and decline in N-acetylgalactosamine-4-sulfatase. Studies were undertaken to identify the mechanisms involved in these effects. Method(s): Human primary small airway epithelial cells (PCS 301-010;ATCC) were cultured and exposed to the SARSCoV- 2 spike protein receptor binding domain (SPRBD;AA: Lys310-Leu560;Amsbio). Expression of the spike protein receptor, angiotensin converting enzyme 2 (ACE2), was enhanced by treatment with Interferon-beta. Promoter activation, DNA-binding, RNA silencing, QPCR, Western blots, ELISAs, and specific enzyme inhibitors were used to elucidate the underlying molecular mechanisms. Result(s): Treatment of the cultured cells by the SPRBD led to increased CHST15 and CHST11 expression and decline in ARSB expression. Sulfotransferase activity, total chondroitin sulfate, and sulfated glycosaminoglycan (GAG) content were increased. Phospho-T180/T182-p38-MAPK and phospho- S423/S425-Smad3 were required for the activation of the CHST15 and CHST11 promoters. Inhibition by SB203580, a phospho-p38 MAPK inhibitor, and by SIS3, a Smad3 inhibitor, blocked the CHST15 and CHST11 promoter activation. SB203580 reversed the SPRBD-induced decline in ARSB expression, but SIS3 had no effect on ARSB expression or promoter activation. Phospho-p38 MAPK was shown to reduce retinoblastoma protein (RB) S807/S811 phosphorylation and increase RB S249/T252 phosphorylation. E2F-DNA binding declined following exposure to SPRBD, and SB203580 reversed this effect. This indicates a mechanism by which SPRBD, phospho-p38 MAPK, E2F, and RB can regulate ARSB expression and thereby impact on chondroitin 4-sulfate and dermatan sulfate and molecules that bind to these sulfated GAGs, including Interleukin-8, bone morphogenetic protein-4, galectin-3 and SHP-2 (Src homology region 2-containing protein tyrosine phosphatase 2). Conclusion(s): The enzyme ARSB is required for the degradation of chondroitin 4-sulfate and dermatan sulfate, and accumulation of these sulfated GAGs can contribute to lung pathophysiology, as evident in Covid-19. Some effects of the SPRBD may be attributable to unopposed Angiotensin II, when Ang1-7 counter effects are diminished due to binding of ACE2 with the SARS-CoV-2 spike protein and reduced production of Ang1-7. Aberrant cell signaling and activation of the phospho-p38 MAPK and Smad3 pathways increase CHST15 and CHST11 production, which can contribute to increased chondroitin sulfate in infected cells. Decline in ARSB may occur as a consequence of effects of phospho-p38 MAPK on RB phosphorylation and E2F1 availability. Decline in ARSB and the resulting impaired degradation of sulfated GAGs have profound consequences on cellular metabolic, signaling, and transcriptional events. Funding is VA Merit Award.Copyright © 2023 The American Society for Biochemistry and Molecular Biology, Inc.
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Background/Objectives: Genetic variants affecting host defense against pathogens may help explain COVID-19 fatal outcomes. Our aim was to identify rare genetic variants related to COVID-19 severity in a selected group of patients under 60 years who required intubation or resulting in death. Method(s): Forty-four very severe COVID-19 patients were selected from the Spanish STOP-Coronavirus cohort, which comprises more than 3,500 COVID-19 patients. Genotype was performed by whole exome sequencing and variants were selected by using a gene panel of 867 candidate genes (immune response, primary immunodeficiencies or coagulation, among other). Variants were filtered, priorized and their potential pathogenicity was assessed following ACGM criteria. Result(s): We detected 44 different variants of interest, in 29 different patients (66%). Some of these variants were previously described as pathogenic (26%). Mostly, the candidate variants were located in genes related to immune response (38%), congenital disorders of glycosylation (14%) or damaged DNA binding genes (9%). A network analysis, showed three main components, consisting of 25 highly interconnected genes related to immune response and two additional networks enriched in carbohydrate metabolism and in DNA metabolism and repair processes. Conclusion(s): The variants identified affect different, but interrelated, functional pathways such as immune response and glycosylation. Further studies are needed for confirming the ultimate role of the new candidate genes described in the present study on COVID-19 severity.
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Background: Menopause is associated with impairments of health, e.g. cardiovascular disease, changes in body composition, decrease in bone density. Physical activity and nutrition strategies have been demonstrated to counteract some of these disabilities. Aim of the present study was to analyze the impact of 3 months of strength and endurance training combined with protein/carbohydrate supplementation on strength, body composition and bone metabolism in postmenopausal women. Method(s): 62 postmenopausal women were recruited. Measurements: Body composition by BIA. Strength of leg, chest and handgrip. delta44Ca/42Ca in blood and urine as proxies for bone metabolism, samples were analyzed by mass spectrometry. Participants completed 2/week endurance training (walking) for 60 minutes (60-75% km/h of 4mmol threshold) and a whole-body strength training 1/week for 60 minutes (online). In addition, the intervention group (IG) received 100g of sour milk cheese and 76g of white bread (35.3 g carbohydrate, 36.1 g protein, 3.5 g fat, 321 kcal) after each training. Result(s): Training results in an anabolic effect on bone metabolism, here protein/carbohydrate supplementation does not show additive effects. Training resulted in an increase of leg and hand grip strength. For hand grip strength an additive effect could be demonstrated after protein/carbohydrate supplementation. Both groups increased muscle mass and reduced fat mass, although the results were not significant. Discussion(s): Training was effective, showing an increase in strength. Additive effects of the nutritional intervention could be only observed for hand grip strength. This may be due to a weak compliance of the protein/carbohydrate supplementation by a meal while corona pandemic. Also, because of the endurance parts, the training was not specifically designed to increase strength. Nevertheless, even this mild training has a remarkably strong impact on bone metabolism. Conclusion(s): Even if the effects are faint, the data of this study provide evidence that protein/carbohydrate supplementation, also by food, supports the events of training on strength. Training has a strong impact on bone metabolism in postmenopausal women. The subjects respond very individually to training and nutrition interventions. Training consequentially is to be personalized.Copyright © 2023
ABSTRACT
The COVID19 pandemic accelerated opportunities for innovation within the decentralization process of clinical trials with opportunities for implementation of patient-centric workflows for efficiency and cost-reduction. Decentralized sample collection, particularly whole blood using dried blood spots (DBS) provides the ideal mechanism for patient driven sample collection with ease of access to sample generation, drug level assessments and metabolomic prMegofiling, providing longitudinal real-time measure of drug specific pharmacodynamic readout for safety and efficacy. In this study, we report the development of a protocol for the capture and comprehensive profiling of metabolomics using dried blood spots from a cohort of 49 healthy volunteer donors. Using liquid chromatography combined with mass spectrometric (UPLC-MS/MS) methods an untargeted metabolomic approach resulted in the identification of >800 biochemicals of which a significant subset was found to be presented in corresponding matched plasma (from whole blood) samples. The biochemicals identified from the DBS samples included metabolites that were part of the lipid, amino acid, nucleotide, peptide, cofactors, carbohydrate and energy super pathways. A significant number of metabolites identified in the DBS samples were xenobiotics including those representing the biotransformation products of drugs. The overall metabolite profiles were analyzed for precision and accuracy of measure, variability in performance and dynamic range to establish benchmarks for evaluation. An additional cohort with a longitudinal sampling as part of the protocol provided the reproducibility of the analytic method for inter-day variability of metabolite performance over time. Although metabolomic profiles varied between individuals from a population perspective, there was minimal variation observed within individuals when samples were profiled longitudinally over several weeks. Thus, the protocols for DBS collection and the corresponding capture of a large set of metabolites with reproducible performance provides an opportunity for its implementation in oncological clinical trials as part of a de-centralized clinical trial solution.
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Global suffering from COVID-19 has necessitated augmenting the immunity systems of humans through consumption of macro-micro-nutrients and antioxidant-enriched fortified foods. In this article, fortifications of popular bakery products, viz. biscuits, cookies, have been reviewed, encompassing the novel fortifying ingredients and innovative methods employed with an emphasis on the overall enrichment in the final product quality. A few notable features concerning novel fortified biscuit and fortified cookie have been decisively summarized. Wheat flour blended with 40% sesame-cake flour resulted in a fortified biscuit possessing higher protein (16.6%), crude fat (16.95%), and dietary fiber (8.2%) with acceptable sensory characteristics. About 9% toting up of chicken-eggshell dried-powder could result in high Ca content in biscuits with customary changes in texture and sensory properties. A remarkable 5% addition of bee pollen to wheat flour appreciably improved the nutrient compositions (carbohydrate 65.18%, protein 7.32%, and total dietary-fiber 1.47%) along with high polyphenol and antioxidant potentials. Notably, mixing fish fillet protein concentrate with wheat flour could yield enhanced nutritional content (protein 14.63-19.52%, fat 16.2-16.5%), as well as augmented amino acids. Remarkably, wheat flour fortified with fermented jack bean flour resulted in an overall fortified biscuit with substantial carbohydrate, crude protein, fat, fiber, ash, and appreciable macro-micro mineral contents and sensory characteristics. Innovative fortified cookies were made by blending wheat flour or Brewer's spent grain flour with one or more ingredients, e.g. full fat soya, mushroom, cardamom powder, moringa leaves, coconut, sweet potato flour rendering amplified values of nutrients, superior physical properties, increased mineral and flavonoid contents and organoleptic qualities.Copyright © 2023 Bentham Science Publishers.
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Nanoparticles (NPs) have unique physicochemical properties that are useful for a broad range of biomedical and industrial applications; nevertheless, increasing concern exists about their biosafety. This review aims to focus on the implications of nanoparticles in cellular metabolism and their outcomes. In particular, some NPs have the ability to modify glucose and lipid metabolism, and this feature is especially interesting to treat diabetes and obesity and to target cancer cells. However, the lack of specificity to reach target cells and the toxicological evaluation of nontargeted cells can potentially induce detrimental side effects, closely related to inflammation and oxidative stress. Therefore, identifying the metabolic alterations caused by NPs, independent of their application, is highly needed. To our knowledge, this increase would lead to the improvement and safer use with a reduced toxicity, increasing the number of available NPs for diagnosis and treatment of human diseases.
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Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-COV-2) may cause inflammation and increased cytokine secretion. Dietary factors may play an important role in enhancing the immune responses against infectious diseases such as SARS-COV-2. This narrative review aims to determine the effectiveness of macronutrients and probiotics to improve immunity in SARS-COV-2 patients. Dietary proteins may boost pulmonary function in SARS-COV-2 patients through inhibitory effects on the Angiotensin-converting enzyme (ACE) and reduce Angiotensin (ANG-II). Moreover, omega-3 fatty acids may improve oxygenation, acidosis, and renal function. Dietary fiber may also produce anti-inflammatory effects by reducing the level of high-sensitivity C-Reactive Protein (hs-CRP), Interleukin (IL-6), and Tumor necrosis factor (TNF-α). In addition, some evidence indicates that probiotics significantly improve oxygen saturation which may enhance survival rate. In conclusion, the consumption of a healthy diet including adequate macronutrients and probiotic intake may decrease inflammation and oxidative stress. Following this dietary practice is likely to strengthen the immune system and have beneficial effects against SARS-COV-2.
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Background: Many EP procedures are moving from the hospital to the ambulatory surgery center (ASC) outpatient setting. The COVID-19 pandemic and the CMS Hospitals Without Walls (HWW) program has been an impetus in accelerating this transition. Anesthesia provider perioperative management is critical in facilitating safe procedures with rapid, same-day discharge. Our EP-dedicated 2-OR ASC completed more than 3,000 procedures and more than 500 left-sided ablations utilizing general anesthesia with endotracheal intubation with same-day discharge. To our knowledge, this experience is unique within an ASC setting in both volume and complexity. Objective(s): We present our comprehensive anesthesia strategy and lessons learned to facilitate safe, efficient procedures and discharge in an EP ASC. Method(s): A nurse anesthesiologist with more than a decade of EP-dedicated experience developed and taught a perioperative anesthesia strategy to facilitate high volume, safe and quick discharge care. Fundamental to this is the avoidance of opioids and benzodiazepines whenever possible. Propofol or general anesthesia with sevoflurane and complete reversal with sugammadex allow for quick recovery. Mandatory video laryngoscope utilization minimizes airway trauma, while liberal antiemetic use eliminates most nausea. All femoral access is device closed. Positive inotropes are used liberally during anesthetic to avoid heart failure. The goal is to deliver all patients to PACU on room air with stable hemodynamics. Anesthesia providers manage the preop and recovery area. Result(s): More than 90% of all patients undergoing general anesthesia and heparinization for left-atrial ablation were discharged home in under 3 hours. Nearly all procedures not requiring femoral access were discharged within 30-60 minutes. High procedure volumes with efficiencies far exceeding our in-hospital experience were thus facilitated with improved patient safety. Since HWW began, five patients have required transfer to the hospital without any deaths. All others were discharged same day. Conclusion(s): We suggest that a dedicated anesthesia team with a tailored perioperative anesthesia plan facilitates performing nearly all EP-related surgical procedures in an ASC. This success is facilitated by appropriate patient selection, preoperative evaluation, intraoperative care prioritizing quick return to baseline, and end-to-end anesthesia perioperative management. We believe this type of anesthesia management is critical to the transition of EP procedures to ASCs.Copyright © 2023
ABSTRACT
Background: The novel coronavirus disease (COVID-19), as a global concern, has affected different economic and social aspects, as well as health costs in various communities. Finding effective and available treatment is an urgent need. A recent study has demonstrated that the ketogenic diet (KD) activates innate immunity and has a protective property against virus infection. Accordingly, we conducted this study to find the effect of oral medium-chain triglyceride (MCT) on COVID-19 and its clinical manifestations. Method(s): This was a randomized clinical trial on 195 patients clinically suspected of COVID-19 referred to infectious disease clinics of Kerman. Patients were randomly assigned into two groups. The Control group received standard supportive treatment, the recommendation for carbohydrate avoiding and diet modification. Patients in the intervention group received all mentioned recommendations beside MCT oil. Patients` clinical symptoms, including body temperature, respiratory rate, body pain, and dyspnea, were recorded in a checklist and analyzed. Result(s): The mean age of patients was 37.78 +/- 12.42 years in the intervention group and 40.81 +/- 13.23 years in controls (P = 0.231). The patients in the intervention group had lower duration of weakness (P = 0.004), body pain (P = 0.004), dyspnea (P = 0.004), gastrointestinal manifestations (P < 0.001), sore throat (P < 0.001), increased respiratory rate (P < 0.001), and high intensity of cough (P = 0.002). Indeed, weakness, cough frequency, sore throat, and gastrointestinal complications were significantly lower in the females of the intervention group (P = 0.006, P = 0.030, P = 0.005, and P = 0.001, respectively). In contrast, in the males of the intervention group, manifestations such as respiratory rates, dyspnea, cough intensity, and sore throat were significantly lower than those in the control group. Conclusion(s): Administration of MCT in outpatients suspected of COVID-19 alleviated clinical symptoms such as increased respiratory rate, cough intensity, dyspnea, body pain, and gastrointestinal symptoms and helps them overcome the probable disease morbidity.Copyright © 2023 The Author(s);Published by Kerman University of Medical Sciences.
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The class of polysaccharides is recognized to be of paramount importance in modern technology;the possible molecular chemodiversity of these biomaterials that can be found in microalgae can play an important role in industrial sectors such as food, pharmaceutical, cosmetic, nutraceutical, and aquaculture. Some species of microalgae are already commercially available and studies about their bioculturing are advanced, thus offering high-value products for commercial applications. In this chapter the results of a searching the literature from 2013 to 2019 has been conducted on the structural identification and characterization of polysaccharides from these microorganisms. This report has been restricted to species commercially available, which are well known and prone to possible utilization and will not cover any possible discovery about rare or new species. In addition, prompted by the recent sudden outbreak of COVID-19, some literature reports on antiviral potential of microalgae polysaccharides among the commercial species are underlined. The overall results of this analysis seem not encouraging about flourishing of new detailed knowledge of fine structural features of these polysaccharides. The situation is reflecting the historical one observed for the launch of polysaccharides in biotechnology since 1950s. Intensive studies on possible exploitation using crude or partially purified and hardly standardized biomass preexisted to more demanding applications with standardized preparations with possible applications in more demanding fields. Only an interdisciplinary effort can lead soon to research for new chemical knowledge on fine structural details that are necessary to increase possible extensions of applications of pure material. © Springer Nature Switzerland AG 2022.
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PURPOSE: Metabolic syndrome (MetS) is a major public health concern that increases the risk of cardiovascular disease and mortality. In previous studies of MetS management, low-carbohydrate diets have been strongly emphasized, despite the fact that many apparently healthy individuals have difficulties adhering to these diets on a long-term basis. The purpose of the present study was to elucidate the effects of a moderately restricted carbohydrate diet (MRCD) on cardiometabolic risk factors in women with MetS. METHODS: This parallel 3-month, single-blind randomized controlled trial was conducted in Tehran, Iran, among 70 women with overweight or obesity aged 20 to 50 years with MetS. Patients were randomly allocated to receive either MRCD (42%-45% carbohydrates and 35%-40% fats) (n = 35) or a normal weight loss diet (NWLD) (52%-55% carbohydrates and 25%-30% fats) (n = 35). Both diets contained the same quantity of protein, which accounted for 15% to 17% of total energy. Anthropometric measurements, blood pressure, lipid profile, and glycemic indices were all assessed before and after the intervention. FINDINGS: Compared with the NWLD group, following an MRCD significantly decreased weight (-4.82 vs -2.40 kg; P = 0.01), body mass index (-1.88 vs -0.94 kg/m2; P = 0.01), waist circumference (-5.34 vs -2.75 cm; P = 0.01), hip circumference (-2.58 vs -1.11 cm; P = 0.01), serum triglyceride (-26.8 vs -7.19 mg/dL; P = 0.01), and increased serum HDL-C levels (1.89 vs. 0.24 mg/dL; P = 0.01). There was no significant difference between the 2 diets in waist-to-hip ratio, serum total cholesterol, serum LDL-C, systolic and diastolic blood pressure, fasting blood glucose, insulin levels, or the homeostasis model assessment for insulin resistance. IMPLICATIONS: Moderate carbohydrate replacement with dietary fats significantly improved weight, body mass index, waist circumference, hip circumference, serum triglyceride, and HDL-C levels among women with MetS. Iranian Registry of Clinical Trials identifier: IRCT20210307050621N1.
Subject(s)
Metabolic Syndrome , Female , Humans , Overweight/complications , Cardiometabolic Risk Factors , Single-Blind Method , Iran , Dietary Carbohydrates/adverse effects , Obesity , Body Mass Index , Blood Glucose/metabolism , Triglycerides , Risk FactorsABSTRACT
Carbohydrates are the most abundant natural products and a major component on the cell surface of living beings. They are useful building blocks of various natural products and organic synthesis due to their presence of multiple chiral centers and hydroxy groups. The recent outbreak of COVID-19 and other life-threatening viral infections necessitates the development of potent antiviral drugs. In this review, we focused on the synthesis of antiviral drugs to treat influenza, HIV, herpes, hepatitis, and other diseases, from different monosaccharides such as D-glucose, D-mannose, D-xylose, N-acetyl-D-glucosamine, D-gluconolactone, etc., such as anti-influenza drugs remdesivir, Tamiflu, zanamivir, and so on.
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Silymarin, is a phytoactive constituent isolated from the fruits and seeds of Silybum maria-num L Gaetn.), also called milk thistle belonging to the family of Asteracease. The phytoactive has been used to treat several physiological disorders. The objective of this manuscript was to review the therapeutic prospective of silymarin due to its ability to treat several physiological disorders. The da-tabases such as Pubmed, Elsevier, and Google Scholar were reviewed for the investigations or reviews published related to the title. The discussion is focused on the immunomodulatory, chemopreventive, and anti-inflammatory mechanisms of silymarin in various metabolic and dermatological disorders. In addition, the review discusses the different therapeutic potentials of silymarin such as the management of the liver disorder, skin carcinogenesis, cardiovascular disorders, diabetes mellitus, neurodegenera-tive disorders, and several dermatological disorders such as melasma, anti-aging, acne, rosacea, atopic dermatitis, and psoriasis. Silymarin is safe even with a dose higher than the therapeutic dose. Si-lymarin had good potential for the safe and effective treatment of numerous metabolic and dermatological disorders. © 2023 Bentham Science Publishers.
ABSTRACT
Carbohydrates are the most abundant natural products and a major component on the cell surface of living beings. They are useful building blocks of various natural products and organic synthesis due to their presence of multiple chiral centers and hydroxy groups. The recent outbreak of COVID-19 and other life-threatening viral infections necessitates the development of potent antiviral drugs. In this review, we focused on the synthesis of antiviral drugs to treat influenza, HIV, herpes, hepatitis, and other diseases, from different monosaccharides such as D-glucose, D-mannose, D-xylose, N-acetyl-D-glucosamine, D-gluconolactone, etc., such as anti-influenza drugs remdesivir, Tamiflu, zanamivir, and so on.
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Objective. To study the changes in the vascular wall, vascular age and metabolic parameters in polymorbid COVID-19 conva-lescents. Material and methods. The study included 62 patients with hypertension who reached the target blood pressure (BP) with dual an-tihypertensive therapy after severe and extremely severe COVID-19. The following examinations were performed: laboratory tests of metabolic parameters, assessment of changes in the vessel elasticity indices (pulse-wave velocity (PWV), augmentation index (AI), central systolic BP (cSBP), 24-hour BP monitoring, and non-invasive markers of liver fibrosis. Results. According to office BP measurements, after the coronavirus infection, an increase in systolic BP (SBP) by 29.6% and di-astolic BP (DBP) by 23.6%, as well as heart rate (HR) by 11.8% (p<0.05) was reported during regular antihypertensive therapy. In addition, 24-hour BP monitoring data indicated an increase in the average daily SBP, DBP, and heart rate. After the coronavirus infection, an increase in PWV by 35.4% (p<0.05), AI by 24.4% (p<0.05), cSBP by 22.1% were reported. Carbohydrate and lipid metabolism parameters deteriorated. A pronounced adverse effect of coronavirus infection on liver function was observed. The vascular age (according to the modified SCORE scale) increased by 6 years (p<0.05). Conclusion. Our study showed that patients after severe and extremely severe COVID-19 have a high risk of liver fibrosis, hypertension and lipid metabolism control worsening and accelerating vascular aging.Copyright © 2023, Media Sphera Publishing Group. All rights reserved.
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Hyperglycemia has become an urgent problem in new coronavirus infection as it is a predictor of a severe course and poor outcomes in both diabetic and non-diabetic patients. This article describes possible mechanisms of hyperglycemia development in new coronavirus infection COVID-19 taking into account peculiarities of pathogenesis and course of the disease, reproduction of SARS-CoV-2, and the ways for hyperglycemia correction by administering different insulin therapy regimens based on the review of national and foreign literature. © 2022 Tomsk State University. All rights reserved.
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Immunity plays a fundamental role in the maintenance and protection of the human body from infectious and pathogenic microorganisms. It requires regular intake of nutrients for proper functioning of the immune system. Due to an unbalanced lifestyle and consumption of ready-to-eat foods, immunity is being affected negatively. Inflammation and immunity are influenced by diet and nutrition. Simple sugars, trans fats, refined carbs, and processed meat, among other meals, may induce inflammation while simultaneously counteracting the anti-inflammatory benefits of omega-3 fatty acids. As a result, unhealthy food intake may enhance systemic inflammation in individuals, boosting the generation of IL-6. Dietary nutrition is a well-known aspect of immune system maintenance, with the significance of micronutrients prominently featured in a variety of scientific literary works. Currently, global population is susceptible viral infection such as COVID-19. This viral strain is directly attacking the immunity of the individual and bringing it at risk. When a patient's immune system isn't operating correctly, COVID-19 is thought to raise the harshness of the infection or make it more vulnerable to contagious diseases. This review paper will help in understanding the immune responses mechanism along with diet balance and maintaining the sufficiency of vitamins and minerals to fight against COVID-19 infection.Copyright © 2023 The Author(s)
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Objective. To study the changes in the vascular wall, vascular age and metabolic parameters in polymorbid COVID-19 conva-lescents. Material and methods. The study included 62 patients with hypertension who reached the target blood pressure (BP) with dual an-tihypertensive therapy after severe and extremely severe COVID-19. The following examinations were performed: laboratory tests of metabolic parameters, assessment of changes in the vessel elasticity indices (pulse-wave velocity (PWV), augmentation index (AI), central systolic BP (cSBP), 24-hour BP monitoring, and non-invasive markers of liver fibrosis. Results. According to office BP measurements, after the coronavirus infection, an increase in systolic BP (SBP) by 29.6% and di-astolic BP (DBP) by 23.6%, as well as heart rate (HR) by 11.8% (p<0.05) was reported during regular antihypertensive therapy. In addition, 24-hour BP monitoring data indicated an increase in the average daily SBP, DBP, and heart rate. After the coronavirus infection, an increase in PWV by 35.4% (p<0.05), AI by 24.4% (p<0.05), cSBP by 22.1% were reported. Carbohydrate and lipid metabolism parameters deteriorated. A pronounced adverse effect of coronavirus infection on liver function was observed. The vascular age (according to the modified SCORE scale) increased by 6 years (p<0.05). Conclusion. Our study showed that patients after severe and extremely severe COVID-19 have a high risk of liver fibrosis, hypertension and lipid metabolism control worsening and accelerating vascular aging.Copyright © 2023, Media Sphera Publishing Group. All rights reserved.
ABSTRACT
Objective. To study the changes in the vascular wall, vascular age and metabolic parameters in polymorbid COVID-19 conva-lescents. Material and methods. The study included 62 patients with hypertension who reached the target blood pressure (BP) with dual an-tihypertensive therapy after severe and extremely severe COVID-19. The following examinations were performed: laboratory tests of metabolic parameters, assessment of changes in the vessel elasticity indices (pulse-wave velocity (PWV), augmentation index (AI), central systolic BP (cSBP), 24-hour BP monitoring, and non-invasive markers of liver fibrosis. Results. According to office BP measurements, after the coronavirus infection, an increase in systolic BP (SBP) by 29.6% and di-astolic BP (DBP) by 23.6%, as well as heart rate (HR) by 11.8% (p<0.05) was reported during regular antihypertensive therapy. In addition, 24-hour BP monitoring data indicated an increase in the average daily SBP, DBP, and heart rate. After the coronavirus infection, an increase in PWV by 35.4% (p<0.05), AI by 24.4% (p<0.05), cSBP by 22.1% were reported. Carbohydrate and lipid metabolism parameters deteriorated. A pronounced adverse effect of coronavirus infection on liver function was observed. The vascular age (according to the modified SCORE scale) increased by 6 years (p<0.05). Conclusion. Our study showed that patients after severe and extremely severe COVID-19 have a high risk of liver fibrosis, hypertension and lipid metabolism control worsening and accelerating vascular aging.Copyright © 2023, Media Sphera Publishing Group. All rights reserved.
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The assessment of the health risks of volatile organic compounds (VOCs) emitted from landfills via dispersion model is crucial but also challenging because of remarkable variations in their emissions and meteorological conditions. This study used a probabilistic approach for the assessment of the health risks of typical VOCs by combining artificial neural network models for emission rates and a numerical dispersion model enhanced by probability analysis. A total of 8753 rounds of simulation were performed with distributions of waste compositions and the valid hourly meteorological conditions for 1 year. The concentration distributions and ranges of the typical health-risky VOCs after dispersion were analyzed with 95% probability. The individual and cumulative non-carcinogenic risks of the typical VOCs were acceptable with all values less than 1 in the whole study domain. For individual carcinogenic risks, only ethylbenzene, benzene, chloroform, and 1, 2-dichloroethane at extreme concentrations showed minor or moderate risks with a probability of 0.1%-1% and an impact distance of 650-3000 m at specific directions. The cumulative carcinogenic risks were also acceptable at 95% probability in the whole study domain, but exceeded 1 x 10-6 or even 1 x 10-4 at some extreme conditions, especially within the landfill area. The vertical patterns of the health risks with height initially increased, and then decreased rapidly, and the peak values were observed around the height of the emission source. The dispersion simulation and health risk assessment of the typical health-risky VOCs enhanced by Monte Carlo can accurately reflect their probabilistic dispersion patterns and health risks to surrounding residents from both spatial and temporal dimensions. With this approach, this study can provide important scientific basis and technical support for the health risk assessment and management of landfills.Copyright © 2022 Elsevier Ltd