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Introduction: In this cross-sectional study, the authors explored the knowledge, attitudes, and practices related to artificial intelligence (AI) among medical students in Sudan. With AI increasingly impacting healthcare, understanding its integration into medical education is crucial. This study aimed to assess the current state of AI awareness, perceptions, and practical experiences among medical students in Sudan. The authors aimed to evaluate the extent of AI familiarity among Sudanese medical students by examining their attitudes toward its application in medicine. Additionally, this study seeks to identify the factors influencing knowledge levels and explore the practical implementation of AI in the medical field. Method: A web-based survey was distributed to medical students in Sudan via social media platforms and e-mail during October 2023. The survey included questions on demographic information, knowledge of AI, attitudes toward its applications, and practical experiences. The descriptive statistics, χ2 tests, logistic regression, and correlations were analyzed using SPSS version 26.0. Results: Out of the 762 participants, the majority exhibited a basic understanding of AI, but detailed knowledge of its applications was limited. Positive attitudes toward the importance of AI in diagnosis, radiology, and pathology were prevalent. However, practical application of these methods was infrequent, with only a minority of the participants having hands-on experience. Factors influencing knowledge included the lack of a formal curriculum and gender disparities. Conclusion: This study highlights the need for comprehensive AI education in medical training programs in Sudan. While participants displayed positive attitudes, there was a notable gap in practical experience. Addressing these gaps through targeted educational interventions is crucial for preparing future healthcare professionals to navigate the evolving landscape of AI in medicine. Recommendations: Policy efforts should focus on integrating AI education into the medical curriculum to ensure readiness for the technological advancements shaping the future of healthcare.
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Persistent primitive hypoglossal artery (PPHA) is a rare embryological carotid-basilar anastomosis. Diagnosis is by imaging and computed tomography angiography is the most common methods employed. Herein we present a case of a 51 years-old Indian male, who admitted with midnight nonwitnessed syncope. CT angiogram of the brain revealed a very rare caroto-basilar anastomoses anomaly with PPHA.
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Purpose/Background: Nasal obstruction is a significant issue influencing the patient's quality of life. Chronic nasal obstruction is frequently associated with other symptoms such as headache, sleep disturbance, and daytime sleepiness. This study aims to investigate the prevalence of nasal obstruction in Saudi Arabia and examine its effect on patients' quality of life. Methods: This is a cross-sectional study conducted in Saudi Arabia. Data were collected using a self-administered combination of two previously validated questionnaires (the NOSE scale and the WHOQOL-BREF) translated into Arabic. The Mann-Whitney test was used to investigate the association between nasal obstruction prevalence and the participants' QOL. Results: The study included 1039 participants from different regions of Saudi Arabia. The prevalence of nasal obstruction was 60.3% among the participants. Several factors significantly affected the prevalence of nasal obstruction, including sex, suffering from a chronic disease, having a family member with nasal obstruction, and using medications (P < 0.001 for all factors). A better score was shown in the four domains of the WHOQOL-BREF questionnaire by the participants who had no nasal obstruction: the physical health domain, psychological health, social relationships, and environment (P < 0.001 for all factors). Conclusions: Quality of life is affected by nasal obstruction. The subjective assessment is essential in evaluating the severity of nasal obstruction disease. It is recommended that healthcare providers use subjective tools combined with objective tools to assess the degree of nasal obstruction severity.
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[This corrects the article DOI: 10.3389/fbioe.2022.1025405.].
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PURPOSE: To compare the outcomes of maxillary horizontal alveolar ridge augmentation in the esthetic area, using either pericardium membrane or titanium mesh, clinically, radiographically, and histologically. MATERIALS AND METHODS: A randomized clinical study was performed on 20 patients with insufficient edentulous ridge width. Subjects were equally allocated into two groups. For both groups, autogenous tenting bone blocks were harvested from the symphysis area. Bone block was covered by an equal mixture (1:1) of particulate graft of inorganic bovine bone and autogenous bone matrix. The barrier membrane used in group 1 (PM) was bovine pericardium membrane, and in group 2 (TM), it was titanium mesh. RESULTS: Both groups had a clinically statistically significant difference in buccopalatal alveolar ridge dimension between baseline and after 4 months. Radiographically, at both intervals, there was no significant difference in 3D volume between both groups. Within both groups, there was a significant volume increase postoperatively. Histologically, the PM group had a lower area fraction of the mean value of newly formed bone than the TM group, yet the difference was not significant. The PM group had a higher mean osteocyte count than the TM group, but again, the difference was not significant. CONCLUSION: Guided bone regeneration using either pericardium membrane or titanium mesh is a reliable treatment for horizontal augmentation of insufficient maxillary alveolar ridge width. No significant differences between both treatment modalities were noticed clinically and histologically. However, percentage change in radiographic volumetric measurements using TM was significantly higher than that of PM. Int J Oral Maxillofac Implants 2023;38:451-461. doi: 10.11607/jomi.9715.
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Aumento de la Cresta Alveolar , Implantes Dentales , Humanos , Bovinos , Animales , Implantación Dental Endoósea/métodos , Titanio , Maxilar/cirugía , Mallas Quirúrgicas , Estética Dental , Pericardio/cirugía , Aumento de la Cresta Alveolar/métodos , Trasplante Óseo/métodosRESUMEN
In this study, the mechanism of diazinon adsorption on single-walled carbon nanotubes (SWNTs), as well as multi-walled carbon nanotubes (MWNTs), was investigated using molecular modelling. Determination of the lowest energy sites of different types of carbon nanotubes (CNTs) was demonstrated. The adsorption site locator module was used for this purpose. It was found that the 5-walled CNTs are the best MWNTs for diazinon elimination from water due to their higher interactions with diazinon. In addition, the adsorption mechanism in SWNT and MWNTs was determined to be wholly adsorption on the lateral surface. It is because the geometrical size of diazinon molecules is larger than the inner diameter of SWNT and MWNTs. Furthermore, the contribution of diazinon adsorption on the 5-wall MWNTs was the highest, for the lowest diazinon concentration in the mixture.
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Nanotubos de Carbono , Plaguicidas , Agua , DiazinónRESUMEN
INTRODUCTION: Right bundle-branch block (RBBB) is a strong predictor of the development of high-grade AV block (AVB) after TAVI. AIMS: To assess mortality, length-of-hospital stay, and cost in patients with RBBB undergoing TAVI according to whether or not they had preprocedural permanent pacemaker (PPM) implantation. METHODS AND RESULTS: A total of 121 patients with RBBB who underwent TAVI between 2009-2021 were included. A total of 41 patients (33.9%) received a prophylactic PPM by clinical preference and 45/80 patients (56%) received PPM after TAVI. Baseline characteristics were balanced. Mortality was similar at 5 years, with death in 17 patients (41.4%) in the prophylactic PPM group vs 27 (33.8%) in the no prophylactic PPM group (adjusted hazard ratio [HR], 1.27; 95% confidence interval [CI], 0.69-2.33; P=.44). Median survival for the prophylactic PPM (4.2 years), post TAVI PPM (4.5 years) and no pacemaker (4.7 years) groups was similar. Sixteen deaths (35.6%) occurred in those receiving PPM after TAVI and 11 deaths (31.4%) occurred in those not receiving PPM (HR, 0.95; 95% CI, 0.43-2.09; P=.90). Thirty-day all-cause mortality was similar. Compared with post-TAVI PPM, prophylactic PPM reduced hospital length of stay (4.3 ± 4.5 days vs 2.5 ± 1.6 days, respectively; P=.02). For the highest and lowest complication and comorbidity scores, prophylactic PPM resulted in cost savings of £297.32 (-2.9%) and excess cost of £423.89 (+5.6%), respectively. There were no major pacing-related complications. CONCLUSIONS: More than half of patients with RBBB undergoing TAVI require PPM shortly after their valve implant. A prophylactic pacing strategy is safe, reduces length of hospital stay, and is cost effective in the United Kingdom.
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Estenosis de la Válvula Aórtica , Bloqueo Atrioventricular , Marcapaso Artificial , Reemplazo de la Válvula Aórtica Transcatéter , Humanos , Reemplazo de la Válvula Aórtica Transcatéter/efectos adversos , Reemplazo de la Válvula Aórtica Transcatéter/métodos , Bloqueo de Rama/diagnóstico , Bloqueo de Rama/etiología , Bloqueo de Rama/terapia , Estenosis de la Válvula Aórtica/diagnóstico , Estenosis de la Válvula Aórtica/cirugía , Estenosis de la Válvula Aórtica/complicaciones , Bloqueo Atrioventricular/terapia , Marcapaso Artificial/efectos adversos , Válvula Aórtica/cirugía , Resultado del Tratamiento , Estimulación Cardíaca Artificial , Factores de RiesgoRESUMEN
Objectives: Since the initial release of biosimilars 18 years ago, regulations for their licensing have changed considerably; however, there is no global consensus on these regulations. Establishing harmonized regulatory guidelines for the approval of biosimilars with support from the ICH, an independent, non-profit association under Swiss law, will significantly enhance the affordability of biological drugs. Methods: Regulatory guidelines from the Food and Drug Administration (FDA), European Medicines Agency (EMA), Medicines and Healthcare products Regulatory Agency (MHRA), and World Health Organization (WHO) were analyzed for historical changes and elements critical to the safety and efficacy of biosimilars. Results: Analysis of all EMA and FDA filings show that none of the animal testing and clinical efficacy testing failed because animals do not have the required receptors to initiate pharmacologic responses, and efficacy studies cannot be statistically powered to conclude any results. New analytical technologies will enable good biosimilarity determination, avoiding both tests. Conclusion: Scientifically based ICH guidelines that remove redundant studies will reduce development costs, improve safety, and allow global drug distribution based on single compliance. These guidelines are particularly necessary for emerging countries lacking the expertise and resources to evaluate biosimilar filings.
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Several therapies and cosmetics are available commercially to prevent or delay cell ageing, which manifests as premature cell death and skin dullness. Use of herbal products such as Aloe vera, curcumin, vitamin C-enriched natural antioxidant, and anti-inflammatory biomolecules are potential ways to prevent or delay ageing. Eggshell membrane (ESM) is also a rich source of collagen; glycosaminoglycans (GAGs) also play an essential role in healing and preventing ageing. It is important to use an extended therapeutic process to prolong the effectiveness of these products, despite the fact that they all have significant anti-ageing properties and the ability to regenerate healthy cells. Encapsulated herbal components are therefore designed to overcome the challenge of ensuring continued treatment over time to prolong the effects of a bioactive component after in situ administration. To study their synergistic effects on a cellular level, alginate, Aloe vera, and orange peel extract were encapsulated in bio-polymeric foaming beads and modified with eggshell membrane protein (ESMP) at various concentrations (1 gm, 2 gm, and 5 gm): (A-Av-OP, A-Av-OP-ESMP1, ESMP2, and ESMP3). Analysis of the structural and functional properties of foaming beads showed interconnected 3D porous structure, a surface-functionalized group for entrapment of ESMP, and a significant reduction in pore size (51-35 m) and porosity (80%-60%). By performing DPPH assays, HRBC stabilization assays, and antibacterial tests, the beads were assessed as a natural anti-ageing product with sustained release of molecules effective against inflammatory response, oxidative stress, and microbial contamination. MTT assays were conducted using in vitro cell cultures to demonstrate cytocompatibility (in mouse 3T3 fibroblast cells) and cytotoxicity (in human carcinoma HeLa cells). Our study demonstrates that bio-polymeric ESMP beads up to 2 g (A-Av-OP-ESMP2) are practical and feasible natural remedies for suspending defective cell pathways, preventing cell ageing, and promoting healthy cell growth, resulting in a viable and practical natural remedy or therapeutic system.
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BACKGROUND: Due to pre-existing difficulties, refugees are especially susceptible to the negative effects of the pandemic; nonetheless, the pandemic's effect on this group is still unclear. The purpose of this study was to determine the effects of the COVID-19 pandemic on the mental health of Palestine refugees in Gaza by identifying the role of social determinants. During the pandemic, the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) enacted a number of policies and measures. The purpose of this research was to assess their efficacy and acceptability. METHODS: This qualitative study took place between August and November 2020. Twenty-nine key-informant interviews were conducted remotely with UNRWA Headquarters, field and clinical staff in Gaza and with community members, aged ≥18 years and residing in Rafah and Jabalia camps. We sought informed consent verbally or via email. Data was coded based on the framework for social determinants of mental health. RESULTS: Interview results indicated that the relationship might be unidirectional, with COVID-19 causing the degradation of living conditions and vice versa, with living conditions exacerbating the COVID-19 situation by facilitating virus transmission. In other instances, the association between mental health determinants and COVID-19 might be bidirectional. In terms of experiencing violence and anxieties, women, children, and daily-paid employees were significantly more disadvantaged than other groups in the community. UNRWA modified its service delivery techniques in order to continue providing essential services. In general, UNRWA's strategies throughout the pandemic were deemed beneficial, but insufficient to meet the needs of Gazans. CONCLUSION: The pandemic highlights the need to go beyond disease treatment and prevention to address social determinants to improve refugees' health and reduce their susceptibility to future shocks. UNRWA has rapidly implemented telemedicine and mental telehealth services, making it imperative to assess the efficacy of these novel approaches to provide care at a distance. A long-term option may be to employ a hybrid strategy, which combines online and in-person therapy.
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COVID-19 , Salud Mental , Niño , Femenino , Humanos , Adolescente , Adulto , COVID-19/epidemiología , Pandemias , Determinantes Sociales de la Salud , Factores SocialesRESUMEN
BACKGROUND Dentinogenic ghost cell tumor (DGCT) is a rare, locally invasive odontogenic neoplasm, considered as a solid variant of the calcifying odontogenic cyst (COC). DGCT accounts for only 2% to 14% of all COCs and less than 0.5% of all odontogenic tumors. It is characterized by an ameloblastomatous odontogenic epithelium and the presence of ghost cells and dentinoid material. CASE REPORT A 42-year-old male patient presented to the clinic with recurrent pain and swelling in the left maxilla. The patient had a similar presentation 3 years before, which had been managed by excisional biopsy and was misdiagnosed as unicystic ameloblastoma. Examination revealed a mild swelling in the left cheek with boney expansion on the posterior area of the left maxilla, with mobility in adjacent teeth. Radiographic evaluation revealed a large, well-demarcated radiolucent lesion with a sclerotic border involving the left maxilla and associated with root resorption in the adjacent teeth. An incisional biopsy was performed, and a diagnosis of DGCT was made. Segmental maxillectomy with safe margins was conducted, considering the aggressiveness of this pathological entity. The defect was reconstructed using the buccal fat pad. Histopathology examination confirmed the diagnosis of DGCT, which was characterized by ameloblastomatous odontogenic epithelium, dentinoid material, and ghost cells. One month follow-up revealed good healing of the surgical site. The patient was scheduled for regular follow-up. CONCLUSIONS This case reports the aggressiveness and high recurrence rates of DGCT. It is recommended to treat DGCT aggressively with safe margins and a long-term follow-up.
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Quiste Odontogénico Calcificado , Tumores Odontogénicos , Adulto , Biopsia , Humanos , Masculino , Quiste Odontogénico Calcificado/patología , Quiste Odontogénico Calcificado/cirugía , Tumores Odontogénicos/diagnóstico , Tumores Odontogénicos/patología , Tumores Odontogénicos/cirugíaRESUMEN
The inhibitory effects of bisphenol A (BPA) and bisphenol S (BPS), which are common pollutants, especially in marine and freshwater, on the electric eel acetylcholinesterase (AChE) activity were studied in vitro and in silico. Both produced full non-competitive inhibition, but the Ki value of BPA was half that of BPS. Molecular docking analyses revealed that both interact with residues W286, F297, Y337, F338 in the PAS and ABS regions in the middle and entrance of the active site gorge, and that BPS also has hydrogen bond with S203 of the catalytic triad. The surge at IC50 values of both compounds with an inflection point at pH: 8.2 suggested that Y124 and/or Y337 in the narrow gorge are primary structural factors in binding. Less effective inhibition of BPS, especially at 25-30 °C, the temperature at which enzyme activity peaks, was attributed to the conformation of the narrow gorge. Homology analyses for AChE initially revealed a significant degree of identity, particularly in the alpha/beta hydrolase domain, which also comprises the active site, with sequences from seven distinct teleost species of various environments. Finally, it was discovered for the first time that BPS, like BPA, is a significant inhibitor of AChE, and this was confirmed by in vitro and in silico analyses done at various pH and temperature levels. It was concluded that this effect might also apply to AChE of most other bony fish.
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Acetilcolinesterasa , Inhibidores de la Colinesterasa , Acetilcolinesterasa/metabolismo , Animales , Compuestos de Bencidrilo , Inhibidores de la Colinesterasa/química , Inhibidores de la Colinesterasa/toxicidad , Electrophorus/metabolismo , Simulación del Acoplamiento Molecular , FenolesRESUMEN
Background: Bladder cancer (BC) is rare in young adults and therefore natural history of BC is still debatable. This study aimed to determine clinical behavior and prognosis of BC in patients <40 years. Materials and Methods: We reviewed patients (<40 years) managed with urothelial BC from 2003 to 2019. Patients with nonurothelial histology were excluded. Clinical behavior and prognosis such as recurrence, progression, and survival were assessed. The recurrence is defined as a newly diagnosed occurrence of BC at previous or new site(s). Cancer progression is defined as an increase in staging or grade. Results: Fifty-five patients inclusive of 45 males and 10 females with a median age of 30.0 (interquartile range [IQR] 25.0-33.0) years were included. The median follow-up was 3.5 (IQR: 1.5-7.0) years. Fifty-one (92.72%) patients were diagnosed with nonmuscle-invasive BC while four (7.27%) patients were diagnosed with muscle-invasive disease. Three out of four patients with muscle-invasive BC died of metastatic disease. According to stage and grade, there were 42 (76.36%) Ta, 9 (16.36%) T1 and 4 (7.27%) having T2 stage while 41 (74.54%) low grade and 14 (25.45%) were having high grade disease. Thirty-six (65.45%) patients remained stable, 13 (26.63%) patients progressed, and 6 (10.90%) patients regressed to lower stage and grade. Higher stage and grade (P = 0.0431) and tumor size >3 cm (P = 0.0454) were significant for recurrence, and higher stage and grade (P = 0.0012) and tumor size >3 cm (P = 0.0055) were associated with tumor progression. Conclusion: BC in younger adults is mostly low stage and low grade. We should be vigilant in patients with higher stage and grade as it is related with recurrence, progression, and metastatic disease.
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Background and Objective: Despite that inherited (thalassemia and SCA) and infectious (hepatitis B, hepatitis C and AIDs) diseases and their risk factor consanguineous marriage are widespread among Yemen population, community-based awareness studies towards premarital screening (PMS) is extremely limited, so our study is designed to elicit knowledge and attitude of engaged and recently married couples in Taiz (Yemen) toward PMS. Methods: A cross-sectional study was conducted from April to September 2021 at Taiz. A well-structured questionnaire was designed and then delivered to participants to collect data. Results: The results revealed that majority of respondents (83.60%-94.18%) had knowledge about inherited and infectious diseases, respectively, and educational institution was the main knowledge source. Females had significantly higher knowledge than males (P ≤ .01), except about AIDs since no difference (P = .539). The results also revealed that majority of respondents had positive attitudes toward PMS, except toward AIDs testing since 70% of males and 68.91% of females had negative attitudes. The majority of respondents agreed that screening reduces the diseases incidence. Approximately half of respondents (50.79%-56.61%) tend to go ahead for marriage in case of positive results for inherited and infectious diseases respectively. Making PMS as an obligatory step prior engagement was agreed by 47.62% of respondents (45.71% of males, 48.74% of females). Conclusion: A high level of knowledge and positive attitudes toward inherited and infectious diseases and PMS were reported. This knowledge reflected on the agreement of majority of respondents regarding PMS importance in term of reduction of diseases incidence.
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Síndrome de Inmunodeficiencia Adquirida , Estudios Transversales , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Masculino , Tamizaje Masivo , Encuestas y CuestionariosRESUMEN
The epidemiological outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), alias COVID-19, began in Wuhan, Hubei, China, in late December and eventually turned into a pandemic that has led to over 3.71 million deaths and over 173 million infected cases worldwide. In addition to respiratory manifestations, COVID-19 patients with neurological and myocardial dysfunctions exhibit a higher risk of in-hospital mortality. The immune function tends to be affected by cardiovascular risk factors and is thus indirectly related to the prognosis of COVID-19 patients. Many neurological symptoms and manifestations have been reported in COVID-19 patients; however, detailed descriptions on the prevalence and characteristic features of these symptoms are restricted due to insufficient data. It is thus advisable for clinicians to be vigilant for both cardiovascular and neurological manifestations to detect them at an early stage to avoid inappropriate management of COVID-19 and to address the manifestations adequately. Patients with severe COVID-19 are notably more susceptible to developing cardiovascular and neurological complications than non-severe COVID-19 patients. This review focuses on the consequential outcomes of COVID-19 on cardiovascular and neuronal functions, including other influencing factors.
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Corazón/virología , Neuronas , SARS-CoV-2 , Humanos , Persona de Mediana EdadRESUMEN
Newer trends in shade matching have been driven by the market need for superior grade esthetic restorations. Modernized shade guides, obtainability of shade-taking devices, and research in the field of human color vision have ameliorated the capability of dentists to attain outstanding color-matched restorations. A detailed knowledge of natural teeth' appearance features is needed along with these new devices to increase shade-matching results.
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INTRODUCTION: Tocilizumab (TCZ) is an interleukin-6 receptor antagonist, which has been used for the treatment of severe SARS-CoV-2 pneumonia (SSP), which aims to ameliorate the cytokine release syndrome (CRS) induced acute respiratory distress syndrome (ARDS). However, there are no consistent data about who might benefit most from it. METHODS: We administered TCZ on a compassionate-use basis to patients with SSP who were hospitalized (excluding intensive care and intubated cases) and who required oxygen support to have a saturation >93%. The primary endpoint was intubation or death after 24 h of its administration. Patients received at least one dose of 400 mg intravenous TCZ from March 8, 2020 to April 20, 2020. RESULTS: A total of 207 patients were studied and 186 analyzed. The mean age was 65 years and 68% were male patients. A coexisting condition was present in 68% of cases. Prognostic factors of death were older age, higher IL-6, d-dimer and high-sensitivity C-reactive protein (HSCRP), lower total lymphocytes, and severe disease that requires additional oxygen support. The primary endpoint (intubation or death) was significantly worst (37% vs 13%, p < 0·001) in those receiving the drug when the oxygen support was high (FiO2 >0.5%). CONCLUSIONS: TCZ is well tolerated in patients with SSP, but it has a limited effect on the evolution of cases with high oxygen support needs.
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Anticuerpos Monoclonales Humanizados/administración & dosificación , Tratamiento Farmacológico de COVID-19 , Adulto , Anciano , Anciano de 80 o más Años , Proteína C-Reactiva/inmunología , COVID-19/inmunología , COVID-19/mortalidad , COVID-19/virología , Ensayos de Uso Compasivo , Cuidados Críticos/estadística & datos numéricos , Femenino , Humanos , Factores Inmunológicos , Interleucina-6/inmunología , Masculino , Persona de Mediana Edad , SARS-CoV-2/efectos de los fármacos , SARS-CoV-2/fisiología , EspañaRESUMEN
Venous aneurysms rarely present as a painless mass; they are usually symptomatic and present with pain, swelling, and sometimes, embolism. We present a 41-year-old man who presented with a painless swelling involving the right side of the neck. Examination of the neck revealed a soft, compressible, non-pulsatile and non-tender swelling above the right sternoclavicular joint. Doppler ultrasound showed a well-defined compressible cystic lesion measuring 4.2 × 1.9 cm causing indentation of the right sternocleidomastoid muscle. Further imaging studies confirmed the diagnosis of an aneurysmal dilation in the right internal jugular vein. An excisional biopsy of the aneurysm was performed using a longitudinal incision in the skin at the anterior border of the right sternocleidomastoid muscle and excisional venotomy was performed. Histopathological examination showed a cystic structure containing organizing blood clots surrounded by a thick fibrous wall. A follow-up neck ultrasound performed postoperative showed a patent internal jugular vein.
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Interaction of procarbazine (PCZ) with calf thymus DNA was studied using biophysical and molecular docking studies. Procarbazine was to interact with DNA with a binding constant of 6.52 × 103 M-1 as calculated using ultraviolet-visible spectroscopy. To find out the binding mode, molecular docking was performed that predicted PCZ to interact with DNA through groove binding mode with binding affinity of -6.7 kcal/mole. To confirm the groove binding nature, different experiments were performed. Dye displacement assays confirmed the non-intercalative binding mode. Procarbazine displaced Hoechst dye from the minor groove of DNA while it was unable to displace intercalating dyes. There was no increase in the viscosity of DNA solution in presence of PCZ. Also, negligible change in the secondary structure of DNA was observed in presence of PCZ as evident by circular dichroism spectra. Procarbazine caused decrease in the melting temperature of DNA possibly because of decrease in the stability of DNA caused by groove binding interaction of PCZ with DNA.
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ADN/química , ADN/metabolismo , Procarbazina/metabolismo , Animales , Sitios de Unión , Bovinos , Dicroismo Circular , Modelos Moleculares , Simulación del Acoplamiento Molecular , Procarbazina/química , Temperatura , ViscosidadRESUMEN
Leishmaniasis is a major health problem worldwide, with several countries reporting cases of leishmaniasis resulting in loss of human life or a lifelong stigma because of bodily scars. The Middle East is endemic for cutaneous leishmaniasis, with countries like Syria reporting very high incidence of the disease. Despite several countries establishing national control programs for containing the sandfly vector and treatment of infection, the disease continues to spread. In addition to the endemicity of the region for leishmaniasis, the Middle East has seen a great deal of human migration either for earning of livelihood or due to political upheaval in the region. These factors contribute to the spread and proliferation of the causative species Leishmania and its sandfly host. This review discusses the current epidemiological scenario in Iraq, Syria, Saudi Arabia, and Jordan, emphasizing the number of cases reported, vector species, Leishmania species, and treatment available. The data is primarily from WHO reports for each country and current and old literature.