Nanosponges: As a Dynamic Drug Delivery Approach for Targeted Delivery

Recent advancements in nanotechnology have resulted in improved medicine delivery to the target site. Nanosponges are three-dimensional drug delivery systems that are nanoscale in size and created by cross-linking polymers. The introduction of Nanosponges has been a significant step toward overcoming issues such as drug toxicity, low bioavailability, and predictable medication release. Using a new way of nanotechnology, nanosponges, which are porous with small sponges (below one microm) flowing throughout the body, have demonstrated excellent results in delivering drugs. As a result, they reach the target place, attach to the skin's surface, and slowly release the medicine. Nanosponges can be used to encapsulate a wide range of medicines, including both hydrophilic and lipophilic pharmaceuticals. The medication delivery method using nanosponges is one of the most promising fields in pharmacy. It can be used as a biocatalyst carrier for vaccines, antibodies, enzymes, and proteins to be released. The existing study enlightens on the preparation method, evaluation, and prospective application in a medication delivery system and also focuses on patents filed in the field of nanosponges.Copyright © 2023 The Authors.

INFLAMMATORY RESPONSE AND ITS CORRECTION IN FORMING A HOST RESPONSE TO EXPOSURE TO ADVERSE ENVIRONMENTAL FACTORS

This study systematically review knowledge about the mechanisms of formation of an inflammatory reaction under the influence of biological, physical, and chemical factors, their similarities and differences, and possible methods of pharmacological correction of pathological conditions associated with excessive activation. The effect of adverse environmental factors, such as biological, physical, and chemical factors, causes a systemic response, which is aimed at maintaining homeostasis and is caused, among other things, by a coordinated reaction of the immune system. Phlogogenic agents result in the activation and regulation of the inflammatory response, which is formed by cellular and humoral components of innate immunity. The activation of innate immunity is characterized by a rapid host response, which diminishes following the elimination of "foreign” invaders, endogenous killer cells, and neogenesis. Depending on the nature of the active factors (biopathogens, allergens, toxins, ionizing radiation, etc.), the mechanisms of immune response arousal have unique features mainly originating from the differences in the recognition of specific molecular patterns and "danger signals” by different receptors. However, inflammatory mediators and inflammatory response patterns at the systemic level are largely similar even under widely different triggers. Inflammation, having evolved as an adaptive reaction directed at the immune response, can lead to the development of chronic inflammation and autoimmune diseases due to a mismatch in mechanisms of its control. A "failure” in the regulation of the inflammatory process is the excessive activation of the immune system, which leads to the cytokine release syndrome (hypercytokinemia, or "cytokine storm”) and can cause self-damage (destruction) of tissues, multiple-organ failure, sepsis, and even death. Modern advances in the study of the pathogenetic bases of the inflammatory response are suggested, such as pharmacological correction using pattern recognition receptor antagonists, pro-inflammatory cytokine inhibitors, or blocking of key control genes or signaling pathways. All rights reserved © Eco-Vector, 2022.

X-ray study as an alternative method for visualizing changes in lungs, with infection caused by COVID-19.

Introduction. Despite the existence of generally accepted diagnostic protocols, when a new coronavirus infection is suspected, in some cases, it is increasingly difficult to detect changes in the lung tissue in a timely manner due to the heavy workload of the main method of radiation diagnostics - computed tomography. Purpose of the study. To determine the effectiveness of the appointment of an X-ray examination as first-line metgod, as well as to carry out a comparative analysis of the use of radiation diagnostics methods - computed tomography and radiography in relation to the diagnostic sensitivity to changes in lung tissue when a person is infected with the SARS-COV-2 virus. Materials and methods. 150 patients (63.0 +/- 8.4 years) with confirmed coronavirus infection were examined. Each of the participants underwent X-ray examination and computed tomography of the chest organs. The percentage of subjects studied for each of the degrees of severity of lung damage was determined to identify the proportion of involvement of lung tissue in the pathological process in the bulk of the examined individuals. Results. Of the 150 patients, changes in the lung tissue during chest X-ray were detected in 97 (65%), respectively, in 53 (35%), pathological changes in the lungs were not visualized. When examining patients by computed tomography, changes in the lungs were detected in 143 patients (95%), X-ray morphological changes were not detected in 7 subjects (5%). When detecting the volume of lung damage, it turned out that the majority of the subjects - 86 people (57%) - had the degree of damage CT-2. The degree of CT-1 and CT-3 was determined in 26 (17%) and 25 (17%) patients, respectively. CT-4 was observed in 6 patients (4%), and in 5% of cases, CT was not able to detect pathological changes in the lung tissue, the degree of CT-0 was established. Conclusion. In the assessment of viral lung damage, radiography takes a significant place, but in 35% of cases, radiographic examination failed to identify the existing pathological changes. CT of the chest organs confirms its value as the "gold standard" in the study of pulmonary pathology in coronavirus infection, but if it is impossible to perform it, radiography is recommended.Copyright © 2021 Vigne et Vin Publications Internationales. All rights reserved.

Possibilities of low-dose radiation therapy in the treatment of intrapulmonary injuries caused by COVID-19 infection.

This paper examines the relevance of the use of a single irradiation of lungs in treatment of pneumonia caused by a new coronavirus infection. Clinical observations are presented that demonstrate perspectives in the treatment of this disease. Patients with severe pneumonia who were prescribed LD-RT (low-dose radiation therapy) at a dose of 0.5-1.5 Gy showed shorter recovery times and no complications. This method of treatment has shown its effectiveness in a number of studies from different countries, predicting success and economic benefits in its further use and study. A literature search containing information on relevant studies was carried out in PubMed, EMBASE, Web of Science and Google Scholar systems. Attention was focused on full-text articles given their general availability in a pandemic.Copyright © 2021 VIDAR Publishing House. All right reserved.

Improving the Dissolution Rate and the Bioavailability of Favipiravir by Solid Dispersion with Curcumin

Favipiravir is an anti-viral agent that inhibits RNA-dependent RNA polymerase of several RNA viruses and is approved for the treatment of influenza in Japan. It has a role as an antiviral drug, an anti-coronaviral (COVID-19) agent but the poor solubility of the favipiravir in the aqueous media of the human body cause a reduction in the effectiveness and bioavailability. In the current work, the favipiravir was formulated for the first time as solid dispersed system with curcumin to improve dissolution property and antiviral activity during treatment of Covid-19. Binary and ternary mix of favipiravir and curcumin with/without soluplus were prepared and characterized by Differential Scanning Calorimetry (DSC), Powder X-ray Diffractometry (PXRD) and Fourier Transform Infrared Spec-troscopy (FTIR) and subjected to the dissolution test by apparatus I according to the European Pharma-copeia. The antiviral activity was measured by its cytotoxicity against A549-hACE2 cells. The results re-vealed that there was a reduction in the crystallinity of both binary and ternary mixtures with an en-hancement of the dissolution in comparison with the pure drug which accompanied by an improvement in the antiviral activity which is promising results that need further .Copyright © 2023, Colegio de Farmaceuticos de la Provincia de Buenos Aires. All rights reserved.

Exploration of potential mechanism of SARS-CoV-2 induced immune inflammatory response leading to progression of atherosclerosis and prediction of traditional Chinese medicine for preventing and treating based on bioinformatics.

Objective To explore the core targets and important pathways of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) induced atherosclerosis (AS) progression from the perspective of immune inflammation, so as to predict the potential prevention and treatment of traditional Chinese medicine (TCM). Methods Microarray data were obtained from the Gene Expression Omnibus (GEO) database for coronavirus disease 2019 (COVID-19) patients and AS patients, and the "limmar" and "Venn" packages were used to screen out the common differentially expressed genes (DEGs) genes in both diseases. The gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) analyses were performed on the common DEGs to annotate their functions and important pathways. The two gene sets were scored for immune cells and immune function to assess the level of immune cell infiltration. The protein-protein interaction (PPI) network was constructed by STRING database, and the CytoHubba plug-in of Cytoscape was used to identify the hub genes. Two external validation datasets were introduced to validate the hub genes and obtain the core genes. Immuno-infiltration analysis and gene set enrichment analysis (GSEA) were performed on the core genes respectively. Finally the potential TCM regulating the core genes were predicted by Coremine Medical database. Results A total of 7898 genes related to COVID-19, 471 genes related to AS progression;And 51 common DEGs, including 32 highly expressed genes and 19 low expressed genes were obtained. GO and KEGG analysis showed that common DEGs, which were mainly localized in cypermethrin-encapsulated vesicles, platelet alpha particles, phagocytic vesicle membranes and vesicles, were involved in many biological processes such as myeloid differentiation factor 88 (MyD88)-dependent Toll-like receptor signaling pathway transduction, interleukin-8 (IL-8) production and positive regulation, IL-6 production and positive regulation to play a role in regulating nicotinamide adenine dinucleotide phosphate oxidase activity, Toll-like receptor binding and lipopeptide and glycosaminoglycan binding through many biological pathways, including Toll-like receptor signaling pathways, neutrophil extracellular trap formation, complement and coagulation cascade reactions. The results of immune infiltration analysis demonstrated the state of immune microenvironment of COVID-19 and AS. A total of 5 hub genes were obtained after screening, among which Toll-like receptor 2 (TLR2), cluster of differentiation 163 (CD163) and complement C1q subcomponent subunit B (C1QB) genes passed external validation as core genes. The core genes showed strong correlation with immune process and inflammatory response in both immune infiltration analysis and GSEA enrichment analysis. A total of 35 TCMs, including Chuanxiong (Chuanxiong Rhizoma), Taoren (Persicae Semen), Danggui (Angelicae Sinensis Radix), Huangqin (Scutellariae Radix), Pugongying (Taraxaci Herba), Taizishen (Pseudostellariae Radix), Huangjing (Polygonati Rhizoma), could be used as potential therapeutic agents. Conclusion TLR2, CD163 and C1QB were the core molecules of SARS-CoV-2-mediated immune inflammatory response promoting AS progression, and targeting predicted herbs were potential drugs to slow down AS progression in COVID-19 patients.Copyright © 2023 Editorial Office of Chinese Traditional and Herbal Drugs. All rights reserved.

Clinical Uses of Cuffless Blood Pressure Monitoring Devices Using Photoplethysmography as a Promising Ambulatory Telemonitoring Tool: A Systematic Review and Meta-Analysis

Introduction: As check-ups in healthcare facilities are much arduous during the pandemic including blood pressure (BP) control, an alternative is urgently needed to replace the use of disturbing cuff-based office and ambulatory BP monitoring (BPM) devices. With the advancement of telemedicine, real-time checking and reporting of blood pressure may be potentially achieved using photoplethysmography (PPG) technology in cuffless devices. Therefore, this study evaluated the accuracy of these devices compared to the cuff-based BPM devices. Method(s): This systematic review and meta-analysis was conducted based on the PRISMA 2020 guideline through multiple databases using Rayyan according to the prearranged inclusion and exclusion criteria, yielding six clinical studies to be included in the final review and analysis. Result(s): Overall fixed-effect meta-analysis of all studies (total of 319 subjects) presented small differences between cuffless and cuff-based devices, showing promising accuracy according to the current medical instrumentation guideline both in measuring systolic BP (SMD: 0.23 mmHg [95% CI: 0.07-0.39], p = 0.004;I2= 0%, p = 0.55) and diastolic BP (SMD: 0.27 mmHg [95% CI: 0.11-0.43], p = 0.0007;I2= 39%, p = 0.14). Discussion(s): PPG itself is a noninvasive technology, consisting of an infrared-emitting light source and a photodetector to measure the blood-reflected light intensity. Despite its ease in equipment, it measures BP accurately without being influenced by various positions and activities. Moreover, the data can be accessed real-time by both users and healthcare providers. Conclusion(s): In summary, cuffless PPG BPM devices have the potential in becoming a telemonitoring device for ambulatory patients for its accuracy. Its presence may be the answer to current restriction towards healthcare access during the COVID-19 pandemic. Therefore, in order to further confirm our findings, more clinical studies with various settings are encouraged to be held.

Evaluation of the bactericidal effect of UV-LED light on alginate impressions.

The oral cavity houses a large number of microorganisms that are potential pathogens, such as cytome-galovirus, hepatitis B virus (HBV), hepatitis C virus, herpes simplex virus types 1 and 2, human immuno-deficiency virus, mycobacterium tuberculosis and currently with the appearance of the SARS COV-2 that causes covid-19, the dental community must take stricter measures in its protection protocols against diseases. To evaluate its germicidal efficacy, ultraviolet light was applied with different exposure times on the alginate dental impressions, immediately after having taken the impression, which when it came into contact with the oral cavity of the patient is contaminated. As a result, a decrease in size and quantity of the bacterial colonies was observed in most of the samples in which the UV LED light was applied at 10 and 15 minutes of exposure. Some samples showed less bacterial growth even after 5 minutes of exposure. All this confirms its germicidal capacity thanks to its 245 nm ultraviolet spectrum that affects the DNA and RNA chain of microorganisms since it is the wavelength of maximum absorption of its molecule, eliminating its reproductive and survival capacity. The advantages it offers such as its small size, easy to handle and install, that it does not require constant maintenance, low acquisition cost;its constant high intensity light that does not generate any increase in temperature, makes it an excellent disinfectant auxiliary that can be incorporated into dental clinics.Copyright © 2023, Ediciones Avances S.L.. All rights reserved.

A narrative review on radiation risk from imaging for COVID-19: Breaking the myths and the mithya

Radiotherapy-induced secondary malignancy is a well-known occurrence. During the COVID-19 pandemic, many people have undergone serial computed tomography (CT) imaging, and concerns have been raised regarding radiation-induced malignancies due to frequent scanning. Accordingly, various low and ultra-low-dose CT (LDCT) thorax protocols have been developed to reduce the dose of radiation. Major governing bodies worldwide have established guidelines regarding the indications for CT scans and chest X-rays during the pandemic. We, therefore, aimed to provide facts about the effects of radiation (both diagnostic and therapeutic). Through this article, we intend to break the myths and 'mithya' (misbeliefs) regarding diagnostic radiation and its association with cancer in this COVID-19 era. For this review, we performed a search in Google using specific keywords pertaining to imaging during COVID-19 and radiation risk. We also included the names of various global governing bodies in the Google search. We included only full text articles and guidelines from authentic websites. From this review, we conclude that if we follow the recommendations of various global governing bodies and use CT scan only in cases of moderate to severe COVID-related symptoms, adhere to the principle of 'as low as reasonably achievable' for radiation protection, and use LDCT scan protocols, we can significantly reduce the mean effective radiation dose delivered and the estimated cancer risk.Copyright © 2023 Cancer Research, Statistics, and Treatment. All rights reserved.

Meteorological-Data-Based Modeling for PV Performance Optimization

Developing a sustainable and reliable photovoltaic (PV) energy system requires a comprehensive analysis of solar profiles and an accurate prediction of solar energy performance at the study site. Installing the PV modules with optimal tilt and azimuth angles has a significant impact on the total irradiance delivered to the PV modules. This paper proposes a comprehensive optimization model to integrate total irradiance models with the PV temperature model to find the optimal year-round installation parameters of PV modules. A novel integration between installation parameters and the annual average solar energy is presented, to produce the maximum energy output. The results suggest an increase in energy yields of 4% compared to the conventional scheme, where tilt angle is equal to the latitude and the PV modules are facing south. This paper uses a real-time dataset for the NEOM region in Saudi Arabia to validate the superiority of the proposed model compared to the conventional scheme, but it can be implemented as a scheme wherever real-time data are available.

Preface

The tenth international symposium on "Large TPCs for low-energy rare event detection” was held in Paris from 15th to 17th of December 2021 at the Institute of Astroparticle physics of the University of Paris. The 2020 issue of this conference series was cancelled due to the Covid pandemic. The symposium was organized in a hybrid mode, which allowed about 40 people to attend in-person among a total of 131 registered participants. Very strict sanitary measures were taken to keep the meeting safe.As in previous events the program included neutrino physics, dark matter and axion searches, related detector R&D and theoretical aspects.To celebrate the tenth edition of the symposium the conference was held on three full days. Special speakers were invited to give a historical overview related to our field. David Nygren shared his memories of the invention and development of the Time Projection Chamber. François Vannucci revealed to us the invisible world of neutrinos. Ioannis Giomataris pointed out various innovative ideas that emerged during presentations and discussions in the last two decades. Jean Iliopoulos retraced the concept and development of the Standard Model and shared his personal vision on the future of particle physics.We wish to thank the many people who contributed to the success of the conference and especially the conveners of the sessions, who allowed for a smooth running of the meeting. We particularly acknowledge the APC management for providing the nice Buffon auditorium and infrastructure. We also thank DSM-Irfu, the University of Zaragoza, the European Research Council and ACAV Ile de France for their valuable support.The organizersList of Organizing Committee is available in this Pdf.

Low-dose radiation therapy suppresses viral pneumonia by enhancing broad-spectrum anti-inflammatory responses via transforming growth factor-ß production.

Low-dose radiation therapy (LDRT) can suppress intractable inflammation, such as that in rheumatoid arthritis, and is used for treating more than 10,000 rheumatoid arthritis patients annually in Europe. Several recent clinical trials have reported that LDRT can effectively reduce the severity of coronavirus disease (COVID-19) and other cases of viral pneumonia. However, the therapeutic mechanism of LDRT remains unelucidated. Therefore, in the current study, we aimed to investigate the molecular mechanism underlying immunological alterations in influenza pneumonia after LDRT. Mice were irradiated to the whole lung 1 day post-infection. The changes in levels of inflammatory mediators (cytokines and chemokines) and immune cell populations in the bronchoalveolar lavage (BALF), lungs, and serum were examined. LDRT-treated mice displayed markedly increased survival rates and reduced lung edema and airway and vascular inflammation in the lung; however, the viral titers in the lungs were unaffected. Levels of primary inflammatory cytokines were reduced after LDRT, and transforming growth factor-ß (TGF-ß) levels increased significantly on day 1 following LDRT. Levels of chemokines increased from day 3 following LDRT. Additionally, M2 macrophage polarization or recruitment was increased following LDRT. We found that LDRT-induced TGF-ß reduced the levels of cytokines and polarized M2 cells and blocked immune cell infiltration, including neutrophils, in BALF. LDRT-induced early TGF-ß production was shown to be a key regulator involved in broad-spectrum anti-inflammatory activity in virus-infected lungs. Therefore, LDRT or TGF-ß may be an alternative therapy for viral pneumonia.

Factors associated with increased financial toxicity after the completion of radiation treatment for gynecologic cancer.

PURPOSE: We evaluated financial toxicity (FT) in patients with gynecologic cancer treated with radiation and assessed the impact of the COVID-19 pandemic on patients' financial wellbeing. METHODS: Patients completed a survey 1 month after completing radiation from August 2019-March 2020 and November 2020-June 2021. The survey included the COmprehensive Score for Financial Toxicity (COST) tool, EQ-5D to measure quality of life (QOL) and pandemic-related questions for the second survey period. High FT was COST score ≤ 23. RESULTS: Of 97 respondents (92% response rate), 49% completed the survey pre-pandemic and 51% after; the majority were white (76%) and had uterine cancer (64%). Sixty percent received external beam radiation with or without brachytherapy; 40% had only brachytherapy. High FT was associated with worse QOL (r = -0.37, P < 0.001), younger age and type of insurance (both p ≤ 0.03). Respondents with high FT were 6.0 (95% CI 1.0-35.9) times more likely to delay/avoid medical care, 13.6 (95% CI 2.9-64.3) times more likely to borrow money, and 6.9 (95% CI 1.7-27.2) times as likely to reduce spending on basic goods. The pandemic cohort had a smaller proportion of respondents with high FT than the pre-pandemic cohort (20% vs. 35%, p = 0.10) and a higher median COST score (32 (IQR 25-35) vs. 27 (IQR 19-34), p = 0.07). CONCLUSION: Privately insured, younger respondents who received radiation for gynecologic cancer were at risk for FT. High FT was associated with worse QOL and economic cost-coping strategies. We observed less FT in the pandemic cohort, though not statistically different from the pre-pandemic cohort.

Exploring the Perceived Educational Impact of COVID-19 on Postgraduate Training in Oncology.

This study sought to report the degree to which postgraduate trainees in radiation oncology perceive their education has been impacted by the COVID-19 pandemic. A cross-sectional online survey was administered from June to July 2020 to trainee members of the Canadian Association of Radiation Oncology (CARO) (n = 203). Thirty-four trainees responded with a 17% response rate. Just under half of participants indicated that COVID-19 had a negative/very negative impact on training (n = 15; 46%). The majority agreed/strongly agreed that they feared family/loved ones would contract COVID-19 (n = 29, 88%), felt socially isolated from friends and family because of COVID-19 (n = 23, 70%), and had difficulty concentrating on tasks because of concerns about COVID-19 (n = 17, 52%). Changes that had a negative/very negative impact on learning included limitations to travel and networking (n = 31; 91%) and limited patient contact (n = 19; 58%). Virtual follow-ups (n = 25: 76%) and in-patient care activities (n = 12; 36%) increased. Electives were cancelled in province (n = 10; 30%), out-of-province (n = 16; 49%), and internationally (n = 15; 46%). Teaching from staff was moderately reduced to completely suppressed (n = 23, 70%) and teaching to medical students was moderately reduced to completely suppressed (n = 27, 82%). Significant changes to radiation oncology training were wrought by the pandemic, and roughly half of trainees perceive that these changes had a negative impact on training. Innovations in training delivery are needed to adapt to these new changes.

Radiation Oncology Virtual Education Rotation (ROVER) 2.0 for Residents: Implementation and Outcomes.

The COVID-19 pandemic catalyzed the integration of a virtual education curriculum to support radiation oncologists in training. We report outcomes from Radiation Oncology Virtual Education Rotation (ROVER) 2.0, a supplementary virtual educational curriculum created for radiation oncology residents globally. A prospective cohort of residents completed surveys before and after the live virtual webinar sessions (pre- and post-surveys, respectively). Live sessions were structured as complex gray-zone cases across various core disease sites. Resident demographics and responses were summarized using means, standard deviations, and proportions. Nine ROVER sessions were held from October 2020 to June 2021. A total of 1487 registered residents completed the pre-survey, of which 786 attended the live case discussion and 223 completed post-surveys. A total of 479 unique radiation oncology residents (of which 95, n = 19.8%, were international attendees) from 147 institutions (national, n = 81, 55.1%; international, n = 66, 44.9%) participated in the sessions. There was similar participation across post-graduate year (PGY) 2 through 5 (range n = 86 to n = 105). Of the 122 unique resident post-surveys, nearly all reported learning through the virtual structure as "very easy" or "easy" (97.5%, n = 119). A majority rated the ROVER 2.0 educational sessions to be "valuable or "very valuable" (99.2%, n = 121), and the panelists-attendee interaction as "appropriate" (97.5%, n = 119). Virtual live didactics aimed at radiation oncology residents are feasible. These results suggest that the adoption of the ROVER 2.0 curricula may help improve radiation oncology resident education.

The Prophylactic Effect of Vitamin C and Vitamin B12 against Ultraviolet-C-Induced Hepatotoxicity in Male Rats.

Ultraviolet C (UVC) devices are an effective means of disinfecting surfaces and protecting medical tools against various microbes, including coronavirus. Overexposure to UVC can induce oxidative stress, damage the genetic material, and harm biological systems. This study investigated the prophylactic efficacy of vitamin C and B12 against hepatotoxicity in UVC-intoxicated rats. Rats were irradiated with UVC (725.76, 967.68, and 1048.36 J/cm2) for 2 weeks. The rats were pretreated with the aforementioned antioxidants for two months before UVC irradiation. The prophylactic effect of vitamins against UVC hepatotoxicity was evaluated by monitoring the alteration of liver enzyme activities, antioxidant status, apoptotic and inflammatory markers, DNA fragmentation, and histological and ultrastructural alterations. Rats exposed to UVC showed a significant increase in liver enzymes, oxidant-antioxidant balance disruption, and increased hepatic inflammatory markers (TNF-α, IL-1ß, iNOS, and IDO-1). Additionally, obvious over-expression of activated caspase-3 protein and DNA fragmentation were detected. Histological and ultrastructural examinations verified the biochemical findings. Co-treatment with vitamins ameliorated the deviated parameters to variable degrees. In conclusion, vitamin C could alleviate UVC-induced hepatotoxicity more than vitamin B12 by diminishing oxidative stress, inflammation, and DNA damage. This study could provide a reference for the clinical practice of vitamin C and B12 as radioprotective for workers in UVC disinfectant areas.