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Among all the countries, Yemen is free of corona virus, and no single case has been recorded till today. Yemen is characterized by its mother geographical location on the Red Sea and its population is approximately 30 million people and an area of ​​555,000 square kilometers.

The coronavirus disease 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began in December 2019 in Wuhan, China. To date, the virus has infected roughly 5,000,000 people and caused approximately 345,000 deaths worldwide, and these numbers are increasing rapidly. Because of the rapid spread and the rising disease burden, several antiviral drugs and immunomodulators are in clinical trials, but no drugs or vaccines have yet been approved against this deadly pandemic. At present, computed tomography scanning and reverse transcription (RT)-PCR are used to diagnose COVID-19, and nanotechnology is being used to develop drugs against COVID-19. Nanotechnology also plays a role in diagnosing COVID-19. In this article, we discuss the role of nanotechnology in diagnosing and potentially treating COVID-19.

Introduction: Current pediatric residents spend less time in the neonatal intensive care unit (NICU) and as a result, resident exposure to neonatal pathophysiology has decreased. Engaging learners efficiently while balancing clinical demands is challenging. Practices to enhance adult education include integration of problem centered learning into the demands of daily life in an environment in which learners feel safe asking questions and expressing themselves. Methods: With this principal in mind, we developed a curriculum to enhance resident and medical student education during busy NICU rotations. The curriculum was case-based, available on-line and facilitated by neonatology faculty and fellows. A template designed to be concise and interactive was used to create and present the cases. After the case vignette, the template prompted medical students and residents to generate a differential diagnosis, order a diagnostic workup and narrow the diagnosis. Discussion of the diagnoses occurred at the conclusion of the cases; however, the template discouraged didactic lectures. Results: In two years, cases were viewed 2,362 times. Facilitators and learners rated the quality and utility of the cases favorably overall. Cases took approximately 20 minutes to complete. Approximately 57% of survey respondents reviewed 1-2 cases per week and 9.6% reviewed 3-5 cases per week. Discussion: A template with a concise and consistent format to construct and present cases allows for the creation of a curriculum that can be incorporated into a clinically demanding service and may enhance clinical teaching and learner engagement.

The European Society of Cardiology (ESC) and the European Society of Hypertension (ESH) jointly developed a series of hypertension guidelines in the years 2003, 207 and 2013. The most recent guidelines were issued by the two societies in August this year (2018) and were published in the European Heart Journal. The new guidelines are printed in more than 90 pages and cover almost all aspects of hypertension based on extensive review of literature giving highest priority to data from randomized controlled trials and well conducted meta-analysis. In important areas where there is inadequate or no evidence, guidelines authors resort to expert opinion. The text was developed over approximately 24 months and was reviewed by representatives of ESC and ESH national hypertension societies. Although it is less than five years since the last hypertension European guidelines in 2013, the recent 2018 guidelines show important differences in diagnosis and treatment strategies with the addition of new sections and recommendations on management of hypertensive emergencies, hypertension in women and pregnancy, different ethnic groups, chronic obstructive pulmonary disease, cancer therapies, peri-operative management, sexual dysfunction and perioperative management.

Mental illness is associated with a significant burden of morbidity and disability. Lifetime prevalence rates for any kind of psychological disorder are higher than previously thought, are increasing in recent cohorts and affect nearly half of the population. Overall rates of psychiatric disorder are almost identical for men and women but striking gender differences are found in the patterns of mental illness. Gender is a critical determinant of mental health and mental illness. Gender differences occur particularly in the rates of common mental disorders - depression, anxiety and somatic complaints. These disorders, in which women predominate, affect approximately 1 in 3 people in the community and constitute a serious public health problem [1].

Aim: To compare the expectations and the reality of oncology patients in terms of to the use of medical cannabis, including symptom control and related quality of life. Research question: Is there a difference between oncology patients expectations and their reality concerning the use of medical cannabis and what do oncology patients experience regarding symptom control and quality of life? Method: This research was done in a tertiary hospital in Israel at the oncology clinic A comparative study that used self- administered questionnaires for patients who received authorization to use medical cannabis. The first questionnaire was given to patients after receiving the authorization to use medical cannabis and asked about their expectations related to its use. Patients filled out the same questionnaire for the second time, approximately two months after. Comparison of the respondent’s answers, before and after using medical cannabis, showed reality of improving symptom control and Quality of Life. Results: Seventy-four patients completed both questionnaires. Most patients reported advantage in symptom control when using medical cannabis, although their expectations were somewhat higher than the reality experienced. Advantage of using medical cannabis was also found concerning improvement of quality of life. Seventy-five of patients still used medical cannabis once completing the second questionnaire and most of them reported that they would recommend the use of medical cannabis. Conclusion: It can be seen from this study that for many oncology patients the use of medical cannabis may be very helpful. However, the use of cannabis is not free of side effects, as can be seen from the patients’ reports. This has clear implications for oncology nursing practice and may lead to a better understanding of patients using medical cannabis in the future, in terms of its benefit and side effects. 

The Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is the most severe form of congenital malformation of the inner female reproductive tract. It is diagnosed as such when the uterus, the upper vagina and optionally the Fallopian tubes are absent. It accounts for approximately 1 in 5000 live-born females and has been classified in two subtypes: type 1 in the presence of isolated uterovaginal aplasia and type 2 when associated in various combinations with extragenital malformations of the kidneys, skeleton, heart and auditory system. Most cases of MRKH syndrome are sporadic, although a significant number of many familial cases have been reported to date. Despite numerous studies, the genetics of the syndrome remains largely unknown and appears to be heterogeneous: chromosomal abnormalities and some candidate gene variants appear to be associated with a few cases; others have been suggested but not yet confirmed. To date, mainly the GREB1L gene appears to be a serious candidate. Among the remaining hypotheses, the controversial contribution of partial duplications of the SHOX gene is still puzzling, as the deficiency of this gene is a major cause of skeletal adysplasia syndromes. We have attempted to resolve this controversy in a study of 60 MRKH cases. Our results tend to show that SHOX duplications can be the origin of a genetic mechanism responsible for MRKH syndrome.

The association between intracranial large vessel occlusion (LVO) and concurrent steno-occlusive lesion of an ipsilateral extracranial internal carotid artery (ICA) is considered a tandem occlusion (TO) [1]. In approximately half of TO, the first clinical manifestation are acute occlusions of the extracranial ICA associated with occlusion of the middle cerebral artery (MCA), with additional occlusion of the intracranial ICA in up to 25% of these cases.[2] This particular lesion subset is technically challenging for endovascular treatment (EVT) and is also characterized by lower success rates of intravenous thrombolysis [3], worse prognosis compared to intracranial occlusions alone, and higher rates of symptomatic intracranial hemorrhage [4]. The optimal approach regarding EVT of TO remains controversial, and reports in this regard are scarce. There are two proposed strategies according to the selection of the first lesion to be treated. The proximal approach comprises stenting of the proximal cervical ICA followed by mechanical thrombectomy (MT) of the intracranial vessel, whereas the distal approach involves MT followed by stenting of the cervical ICA [3–14]. Besides, there other clinically relevant unresolved aspects regarding the treatment of these patients, such as concomitant use of intravenous thrombolysis, the need for stenting compared to angioplasty alone, as well as the most adequate antiplatelet strategy after treatment. Accordingly, we aimed to report the procedural and clinical outcomes of a real-world experience in a comprehensive stroke center regarding EVT of anterior circulation acute ischemic stroke (AIS) associated with a TO.

Foreign body ingestion in children is a serious problem encountered among children. Approximately 80% of cases of foreign body ingestions occur in children between the ages of six months and three years [1]. Button battery ingestion occurs at an estimate rate of ten in one million people per year, a small group of which are retained in the esophagus and later become complicated [2]. Button battery ingestion can lead to esophageal perforation and death within hours if not appropriately diagnosed [3].

The effect of the novel coronavirus (SARS-CoV-2) pandemic has produced significant health concerns negatively impacting individuals. As the ongoing and constantly changing nature of SARS-CoV-2 continues, the unique characteristics of this pandemic trend toward anxiety and loneliness as significant behavioral health outcomes. Furthermore, the SARS-CoV-2 pandemic has significantly impacted the utilization of social media platforms such as Twitter. Utilizing over 1.6 million tweets from approximately 988,760 Twitter users geolocated in Washington state from the University of Pennsylvania’s publicly available Twitter database (from March 2020 to March 2021), this study evaluated the impact of SARS-CoV-2 by using expressions of loneliness and anxiety to predict mental and physical symptoms. Bivariate correlations revealed expressions of loneliness were correlated to trouble breathing while expressions of anxiety were correlated to skin lesions, body aches, flu-like, seasonal cold, trouble breathing, nausea or diarrhea, fever, chills, and cough. Multiple multivariate linear regressions were completed, and a significant regression equation was found in predicting trouble breathing symptoms on expressions of loneliness and anxiety, however, the proportion of variance was 8% of the observed variation in the model. Further implications revealed the importance of understanding mental and physical well-being during a public health crisis as well as the use of social media platforms as primary and supplementary stimuli.

Introduction: Induction of labour is a common obstetric intervention, occurring in approximately 25% of term pregnancies in developing countries. Pharmacological and mechanical methods commonly used are prostaglandin preparations (PGE1 and PGE2) and various intracervical catheters (single or double balloon), respectively.Material and methods: Study was conducted in Siliguri District Hospital, Siliguri, Darjeeling, west Bengal. 100 antenatal woman admitted in obstetrics ward with pog more than 37 weeks were taken for study after applying inclusion and exclusion criteria. 50 were induced with cerviprime gel and 50 with intracervical foley catheter. Statistical analysis done.Results: Mean interval between treatment initiation and delivery was not statistically significant, tachysystole was more common in group B women, rate of LSCS and NVD was similar in both groups.Conclusion: It can be concluded from the present study that Foley’s catheter (mechanical) and prostaglandin E2 gel [pharmacological] both are effective agents for preinduction cervical ripening which substantially improve the bishops score and increase the chances of successful labour induction. There is no significant difference in their efficacy, mode of delivery and perinatal outcome.

Crohn's disease is a chronic syndrome of the gastrointestinal tract that produces idiopathic inflammation. Approximately half of the patients develop abscesses and/or fistulas throughout their history that are located, mainly, in the perianal region. Current treatments are based on individualized plans that generally use combined pharmacology for symptomatic relief based on glucocorticoids, immunosuppressants or immunomodulators, antibiotics, anti-inflammatories, probiotics, and antibodies, or surgical therapies such as intestinal resections or ostomizations (colostomy and ileostomy) that tend to cause notable side effects in a considerable percentage of patients and a significant decrease in their quality of life.Perianal fistulas consist of abnormal tracts, inflammatory tunnels, or chronic tracts of granular tissue that connect two surfaces lined with epithelium, have an external hole in the skin that borders the anus, and an internal hole located inside it around the anal canal, rectus and sphincters. Treatment is a complex process that requires a multidisciplinary approach and the combination of several treatments. In the short term, the goal is to drain abscesses, reduce inflammatory and infectious processes, guard the fistulous tract with seton or lax lines, facilitate patency, and hinder new formations. In the long term, a total cure and the avoidance of complications that require surgery or the creation of intestinal stomas are pursued.For this reason, new effective remedies with fewer adverse effects continue to be investigated, one of the most promising being the use of mesenchymal stem cells for the regeneration and cure of perianal fistulas and the remission of symptoms. The present bibliographic review delves into this new therapy and analyzes the current state of the situation regarding its efficacy and safety.

Coronary heart disease (CHD) is the leading cause of death worldwide [1]. In China, the prevalence of CHD has kept continually increasing, with the number of patients being approximately 11.39 million, at present [2] and CHD poses a substantial threat to human health. Hypertension and diabetes both are the major risk factors for CHD [2,3] and the risk of CHD in patients with coexisting hypertension and diabetes is higher than that in patients with either of the two diseases [4].

Heterologous expression of proteins often pursues high expression levels, but it can easily result in misfolding and loss of biological function. L-α-glycerophosphate oxidase (GlpO) is a flavin adenine dinucleotide (FAD)-dependent oxidase which is widely used in the clinical determination of triglycerides. We found that the total enzymatic activity of GlpO expressed in Escherichia coli (E. coli) was extremely low, probably due to the absence of FAD cofactors and the misfolding of GlpO at a high synthesis rate. Therefore, decreasing the expression rate was used to improve the activity of GlpO. The specific activity of GlpO expressed on the pUC19 vector with lac promotor was approximately 30 times higher than that expressed on the pET28a vector with T7 promotor, but the expression levels of GlpO on the two vectors were completely opposite. It indicated that the specific activity of GlpO was increased as the expression level decreased. However, too low expression greatly influences the total amount and activity of the functional enzyme. In order to resolve this problem, two new plasmids, GlpO-CG4 and GlpO-CG6, were constructed by inserting 4 or 6 nucleotides, respectively, between the ribosome binding site (RBS) and the start code (ATG) on pET28a. Compared with the expression on the GlpO-pET vector, the expression rates of GlpO on the GlpO-CG4 and GlpO-CG6 were dramatically decreased. The total activity of GlpO expressed on GlpO-CG6 was 11 times and 1.5 times higher than that expressed on the GlpO-pET and GlpO-pUC, respectively. Results suggest that the activity of GlpO can be improved by decreasing the expression rate. 

Background: The rapid increase in the popularity of internet use and video games is associated with multiple consequences and comorbidities; therefore, investigating this issue is important, especially now that the number of people playing video games has reached approximately 2.2 billion people worldwide.Method: This paper reviews the existing literature on Google Scholar and PubMed to examine the association between internet gaming disorder (IGD) and attention deficit hyperactivity disorder (ADHD) between 2013 and 2020.Result: The reviewed studies reveal a statistically significant association between ADHD and IGD. The reviewed studies demonstrate that ADHD is a predictive factor for the development and persistence of IGD and affects the severity of IGD symptoms.Conclusion: Especially among those with ADHD, IGD causes life distress and social life impairment. This review indicates a statistically significant association between ADHD and IGD; however, longitudinal studies are needed to assist the direction of this association and make relevant and appropriate recommendations to prevent its consequences and comorbidities.

Introduction: In an earlier study, we described and validated a VKA dose-finding algorithm (B2A), based on a novel bidirectional factor (BF). We designed a prospective study to evaluate the B2A in a daily care setting. Methods: In this open-label prospective study, we compared the outcomes of the B2A over the year 2020 with the outcomes of the previous year (2019), using regular algorithms. The outcomes were the duration of Time in the Therapeutic Range (TTR), the percentage of automated dose proposals (PAuP) and the percentage of accepted dose proposals (PAcP). The data were obtained from three anticoagulation centers in the Netherlands, in four locations. The outcomes of this study were based on a non-inferiority level.Results: The TTR over the year 2020 was at least non-inferior compared with the standard of care treatment. The percentage of automated proposals increased in all centers to approximately 96% of all dosages. Conclusion: The B2A performs non-inferior compared with the existing algorithms and in some aspects even better.

Drug addiction remains a major health concern following its devastating consequences to the users and the economy. Current statistics show a rising trend in substance abuse around the globe with approximately 284 million people engaging in drug abuse. Various approaches are used to treat the victims of drug abuse. Cognitive behavior therapy, a form of nonpharmacological intervention, has also been shown to be an effective treatment option for drug addiction. The use of Cognitive Behavioral Therapy (CBT) has grown since the 1970s to become one of the most important models of psychotherapy in this decade. Various empirical studies have shown the efficacy of CBT in well-controlled trials. A total of 19 randomized trials (cases) (with over 1400 patients treated) were selected and studied. In the various cases, results showed that patients were treated for drug and substance abuse disorders with the majority being those who abused cannabis, cocaine, alcohol and other opioids. In most cases, the CBT techniques that were used for drug addiction included cognitive restructuring, relapse prevention and contingency management. Components of CBT for drug addiction include skills and training, amplification of non-substance-related activities, approaches for managing urges, drug rejection and improvement of social aptitudes. Cognitive restructuring focuses on the identification of misconceptions and influencing the way people think about themselves by eliminating distorted thinking. Relapse prevention focuses on the identification and prevention of high-risk situations that may trigger the patient to engage in drug abuse. Contingency management reinforces positive behaviors and reduces negative behaviors through the use of rewards and incentives.

Aims: There is no study in the literature about ischemia-modified albumin (IMA) and hepatocyte growth factor (HGF) levels in amniotic fluid for Down syndrome cases. The aim of this study was to investigate the changes of IMA and HGF in Down syndrome cases at 16-20 weeks of gestation compared to normal fetuses.Methods: For this prospective case-control study, following reaching the number of 20 women (study group) who had the prenatal diagnosis of Down syndrome, maternal and gestational age-matched pregnant women with normal constitutional karyotype were selected for the control group (n = 74) from the stored amniotic fluid samples. Results: Mean women and gestational ages were comparable between the two groups. Amniotic fluid IMA (1.32 ± 0.13 vs. 1.11 ± 0.11 ABSU, respectively, p < 0.001) and HGF (2743.53 ± 1389.28 vs. 2160.12 ± 654.63 pg/mL, respectively, p = 0.008). Levels were significantly higher in pregnant women having Down syndrome fetuses compared with women having normal fetuses. The amniotic fluid IMA levels for the diagnosis of Down syndrome, and the sensitivity and specificity were calculated as 95.0% and 71.6% for the limit value 1.171 cm3, respectively. Conclusion: In cases with suspected Down syndrome, the diagnosis of Down Syndrome may be made in approximately 1 hour with high sensitivity and specificity by measuring the IMA level in the amniotic fluid sample taken for fetal karyotyping.

Edentulism, a condition characterized by the absence of teeth, significantly impacts facial aesthetics, eating efficiency, and speech fluency, thereby diminishing the quality of life. This paper aims to explore the All-On-Four Treatment Concept in Dental Implants, a promising solution to this issue. The All-On-Four approach, though complex, offers a pathway to restore smile and functionality by using four strategically positioned implants to hold a temporary prosthesis. This prosthesis is later replaced by a permanent version after approximately four months. This swift oral restoration technique significantly enhances a patient’s self-confidence and overall life quality. The significance of this treatment lies in its potential to provide a less invasive and more affordable solution for severe jawbone atrophy, where the proximity of critical anatomical structures and compromised bone conditions may hinder other prosthetic solutions. The paper concludes with a discussion on the potential of the All-On-Four treatment to revolutionize dental implant procedures, offering a beacon of hope for individuals suffering from edentulism.

Background: Asthma, a chronic inflammatory respiratory ailment, is characterized by variable airflow obstruction and heightened bronchial reactivity. Despite therapeutic advancements, a comprehensive comprehension of its underlying metabolic mechanisms remains elusive. Metabolomics has emerged as a powerful approach to investigating the complex connections between serum metabolites and disease pathogenesis. However, exploring the causal relationship between serum metabolites and asthma susceptibility demands meticulous examination to unveil potential therapeutic targets.Methods: Mendelian randomization (MR) approach was explored to investigate the potential causal associations between serum metabolites and asthma risk. The main analysis employed the inverse variance weighted method, supported by supplementary approaches such as MR-Egger, weighted median, weighted mode, and sample mode. To enhance the strength and credibility of our results, we conducted sensitivity analyses encompassing heterogeneity testing, assessment of horizontal pleiotropy, and leave-one-out analysis. Additionally, pathway enrichment analysis was performed to further elucidate the results.Results: We identified 18 known and 12 unknown metabolites with potential associations with asthma risk. Among known metabolites, seven exhibited protective effects (e.g., 4-acetamidobutanoate, allantoin, kynurenine, oxidized bilirubin*), while eleven were considered risk factors (e.g., ornithine, N-acetylornithine, alanine). Through the integration of four additional MR models and sensitivity analyses, we revealed a connection between 4-acetamidobutanoate and approximately 6% lower asthma risk (OR = 0.94, 95% CI: 0.90–0.98).Conclusions: Our MR analysis uncovered protective and risk-associated metabolites, alongside 12 unknown metabolites linked to asthma. Notably, 4-acetamidobutanoate demonstrated a nominal 6% reduction in asthma risk, highlighting its potential significance.