132 research outputs found
Examining social networking site narratives between government and youth on entrepreneurship : the case of relationship development in Egypt
Analysis of the ways in which SNS (Social Networking Sites) are used by governments, organisations and everyday users has over the past ten years been of significant interest to academic researchers. Part of this analysis of use has included understanding how in the Middle East, SNS were used in the series of anti-government protests known as the Arab Spring. Specifically, in Egypt, during the January 25 Revolution, a large number of youth users went on SNS such as Facebook to disseminate information, create conversations and raise awareness of their perspectives and concerns. Whilst use in protest and demonstration may result in aspects such as a drop in public trust of government agents, SNS could also contribute to significant relational outcomes such as relationship development and trust.This study takes Egypt as its foci in investigating the outcomes of SNS interaction between Government agencies and Youth users. This study aims to understand the role of the topic about which conversations are occurring in communicating with the citizens. Additionally, this study places emphasis on the role of the government agency in changing the perceptions of the Government through SNS interactions.This study contributes to the burgeoning domain of SNS studies by providing a non- traditional approach to its theoretical background. It specifically achieves this by adopting three areas of focus; first, SNS which includes a site and user perspective. Second, the political context which includes Marketing theory and government studies. Third, relationship development and trust which includes a multi theory lens into theorising the outcomes of SNS interactions. Therefore, it is the first study to apply Political Marketing Theory in Egypt in a non-electoral context. Using novel applications of Relationship Marketing and Public Relations theory, this study presents an understanding of the relationship orientation in the interaction between GOFE and Youth on SNS. Furthermore, the analysis regarding trust development in this study is developed through a framework that highlights both the usersā perspective of trust and the organisations' efforts towards achieving trust.This study adopts a social constructivist approach. Therefore, this investigation embraces qualitative inductive methods. Due to the rich culture and high interaction of the context investigated, the research problem at hand was addressed through the application of netnography. The Netnographic package includes; firstly, an online observation of Facebook pages followed by textual analysis. Secondly, it includes two sets of interviews with a sample of the users (i.e. Youth) and the organisations (i.e. GOFE). Using Thematic Analysis ten different themes were extracted from the three sources of data (i.e. Facebook data, GOFE interviews and Youth interviews).The findings from this study suggest that GOFE SNS representation is not yet mature. However, findings demonstrate that GOFE are in the process of becoming a generalisable model of government SNS representation. This could occur with the drop in control over engagement and movement to engagement strategies beyond those targeted primarily at publicity alone. Indeed, this study confirms the significant influence of SNS in fostering positive relational outcomes between the Government and Youth, while confirming the role of the topic and agency. These findings are discussed in light of theoretical contribution and practical implication to the government sector. Whereas previous studies have focused on one aspect of the communication process, this study is the first conducted in the public sector domain in Egypt that focuses on the observed behaviours of GOFE on SNS, perceived behaviours of GOFE by Youth and the strategic intent of GOFE by being present on SNS. This study concludes with limitations incurred and recommendations for practice and future studies. Finally, this study argues that with a further optimised SNS representation, there is indeed hope in developing relationships and achieving trust between Government and citizens in Egypt through SNS interaction
Effect of a Self-Etch Adhesive Containing Nanobioglass on Postoperative Sensitivity of Posterior Composite Restorations - A Randomized Trial
BACKGROUND: Postoperative sensitivity is one of the major problems regarding posterior resin composite restorations that causes patient discomfort, maybe a reason for replacement of the restoration with an additional office time.
AIM: To evaluate the effect of the addition of a Nanobioglass to a self-etch adhesive on the reduction of post-operative sensitivity following composite restorations versus a self-etch adhesive that is free of Nanobioglass agent.
MATERIALS AND METHODS: Sixteen patients having class II carious lesions were included in the study. After cavity preparation, each tooth was randomised to one of the following restorative treatments. Teeth in the control group were restored using self-etch adhesive (OptiBond All-In-One, Kerr) that is free of nanobioglass agent, and nano-hybrid resin composite (Herculite Ultra, Kerr). Restoration of teeth in the experimental group was similar to the control except that a nanobioglass agent was added to the self-etch adhesive. Patients were contacted for evaluation of postoperative sensitivity at 1 day, 1 week, 1 month, and 3 months. Data were analyzed using friedmann test followed by fisher exact test.
RESULTS: The experimental group (self-etch adhesive containing nanobioglass) showed a significantly less postoperative sensitivity compared with the control group (Self-etch adhesive free of nanobioglass) at 1 day, and 1-week evaluation periods. While both groups did not possess any significant difference at 1 month, and 3 months periods.
CONCLUSION: The problem of postoperative sensitivity following resin composite restorations could be solved by the addition of bioglass nanoparticles into dental adhesives
Usporedba antibakterijskoga uÄinka probiotiÄkog jogurta i žvakaÄe gume koja sadržava ksilitol kod gerijatrijskih pacijenata: randomizirano kontrolirano kliniÄko istraživanje
Objectives: To evaluate the effect of probiotic bacteria in yogurt on Streptococcus mutans (MS) count, plaque adherence and salivary pH compared to xylitol-containing chewing gum in geriatric patients. Material and methods: Total number of 96 high caries risk geriatric patients were randomized into two equal groups (n=48). Group 1 (intervention group) received probiotic yogurt (Activia, Danone) once per day, and group 2 (control group) received xylitol chewing gum (Trident original) three times per day. The primary outcome was salivary Streptococcus mutans count and secondary outcomes were interdental plaque Streptococcus mutans count, salivary pH and bacterial adherence. Results: For Streptococcus mutans count in saliva and plaque, a statistically significant reduction in the level of MS over all the examined follow up periods of the study in probiotic yogurt group as well as xylitol gum group was found. An intergroup comparison for salivary MS count showed statistically significant difference between the two materials in a two week and a three month period of time and there was no statistically significant difference between both materials at one month time period. Salivary pH results showed statistically significant increase in pH in both groups along the follow-up periods. Bacterial adherence results showed statistically significant reduction in both groups. Conclusions: Probiotic yogurt is an effective antibacterial agent against salivary and plaque bacteria in geriatric patients.Svrha istraživanja: Procijeniti kod gerijatrijskih pacijenata uÄinak probiotiÄkih bakterija u jogurtu prema broju bakterija Streptococcus mutans (SM), adherenciji plaka i pH sline u usporedbi sa žvakaÄom gumom koja sadržava ksilitol. Materijali i metode: Ukupan broj od 96 gerijatrijskih pacijenata s visokim rizikom od pojave karijesa randomiziran je u dvije jednake skupine (n = 48). Skupina 1 (interventna skupina) konzumirala je probiotiÄki jogurt (Activia, Danone) jedanput na dan, a skupina 2 (kontrolna skupina) dobivala je žvakaÄu gumu sa ksilitolom (Trident original) tri puta na dan. Primarni ishod bio je broj bakterija Streptococcus mutans u slini, a sekundarno se želio doznati broj tih bakterija u interdentalnom plaku, pH sline i adherencija SM-a. Rezultati: Za broj bakterija Streptococcus mutans u slini i plaku postignuto je statistiÄki znaÄajno smanjenje njihove razine tijekom svih razdoblja praÄenja u skupini s probiotiÄkim jogurtom te u skupini sa žvakaÄom gumom koja sadržava ksilitol. MeÄugrupna usporedba za broj SM-a u slini pokazala je statistiÄki znaÄajnu razliku izmeÄu dvaju materijala u razmaku od dva tjedna i tri mjeseca, a nije bilo statistiÄki znaÄajne razlike izmeÄu obaju materijala u razdoblju od jednog mjeseca. Rezultati pH sline pokazali su statistiÄki znaÄajno poveÄanje vrijednosti u objema skupinama tijekom razdoblja praÄenja. Rezultati bakterijske adherencije pokazali su statistiÄki znaÄajno smanjenje u objema skupinama. ZakljuÄak: ProbiotiÄki jogurt uÄinkovito je antibakterijsko sredstvo protiv bakterija u slini i plaku kod gerijatrijskih pacijenata
<i>Garcinia cambogia</i>Ā phenolics as potent anti-COVID-19 agents:phytochemical profiling, biological activities, and molecular docking
COVID-19 is a disease caused by the coronavirus SARS-CoV-2 and became a pandemic in a critically short time. Phenolic secondary metabolites attracted much attention from the pharmaceutical industries for their easily accessible natural sources and proven antiviral activity. In our mission, a metabolomics study of the Garcinia cambogia Roxb. fruit rind was performed using LC-HRESIMS to investigate its chemical profile, especially the polar aspects, followed by a detailed phytochemical analysis, which led to the isolation of eight known compounds. Using spectrometric techniques, the isolated compounds were identified as quercetin, amentoflavone, vitexin, rutin, naringin, catechin, p-coumaric, and gallic acids. The antiviral activities of the isolated compounds were investigated using two assays; the 3CL-Mpro enzyme showed that naringin had a potent effect with IC50 16.62 μg/mL, followed by catechin and gallic acid (IC50 26.2, 30.35 μg/mL, respectively), while the direct antiviral inhibition effect of naringin confirmed the potency with an EC50 of 0.0169 μM. To show the molecular interaction, in situ molecular docking was carried out using a COVID-19 protease enzyme. Both biological effects and docking studies showed the hydrophobic interactions with Gln 189 or Glu 166, per the predicated binding pose of the isolated naringin
Bone Mineral Density Changes in Patients with Recent-Onset Rheumatoid Arthritis
Background Osteoporosis and related fragility fractures are one of the most common complications seen in patients with rheumatoid arthritis (RA) and dramatically affect quality of life. Objective To evaluate changes in bone mineral density in patients with recent onset rheumatoid arthritis (< 1 year) and its correlation if any with a modified DAS-28 score and simple erosion narrowing score (SENS). Methods This study included 30 patients with recent-onset rheumatoid arthritis fulfilling the new American College of Rheumatology/European League Against Rheumatism diagnostic criteria for rheumatoid arthritis and 20 healthy volunteers as controls. All were subjected to a complete blood count, erythrocyte sedimentation rate, C-reactive protein, liver function tests, renal function tests, rheumatoid factor, and plain x-rays of the hands and feet. Dual-energy x-ray absorptiometry DEXA was used to measure bone mineral density (BMD) of the left proximal femur, lumbar spine (L1āL4), and lower distal radius at the time of recruitment. Results In the RA patients, 13.3% had osteoporosis, 50% had osteopenia, and 36.7% had normal BMD. The most common site of osteoporosis was the lumbar spine (four patients, 13.3%) followed by the femur (two patients, 6.6%), and forearm (only one patient, 3.3%). There was a significantly higher percentage of osteoporosis among RA males than females and the difference was statistically significant ( P = 0.009). Osteoporosis was more common in patients treated with corticosteroids and disease modifying antirheumatic drugs (DMARDs) than in patients treated with only nonsteroidal anti-inflammatory drugs ( P = 0.004). Higher disease activity (DAS-28) was found in RA patients with osteoporosis compared to RA patients with normal BMD or osteopenia, but the difference was not statistically significant. Osteoporotic RA patients were found to have a higher SENS score for radiological damage than nonosteoporotic ones. Conclusion BMD changes do occur in patients with early RA, and are not necessarily correlated with disease activity (DAS-28). However, a significant negative correlation was found between BMD and the score of radiological damage (SENS). Dual energy x-ray absorptiometry is an important investigation to assess BMD in early RA patients
CXCR 3 expression on CD4+T cells and in renal tissue of pediatric systemic lupus erythematosus patients
Background: Pediatric systemic lupus erythematosus (pSLE) accounts for about 20% of all cases of Systemic Lupus Erythematosus (SLE), with nephritis occurring in approximately 50% of the patients. Objective: to evaluate the expression of CXCR3 in the kidneys and on CD4+ T cells in pSLE. Methods: This study was conducted on 45 patients with pSLE following up at the Allergy and Immunology Clinic, Childrenās Hospital, Ain Shams University and 45 age and sex matched healthy children as a control group. Medical history, clinical examination and routine laboratory investigations for assessment of disease activity were done for all patients, the frequency of CXCR3, CD4+ T cells was determined in all patients and controls. Twenty-five Paraffin blocks of patients with lupus nephritis (LN) (available at the time of the study) underwent immunohistochemistry staining for the frequencies of Chemokine C receptor (CXCR3). Results: The absolute level and percentage of serum CD4+CXCR3+ were significantly lower among our patients as compared to healthy controls. A significant direct correlation was found between serum CD4+CXCR3+ and both the lymphocytic count and quantitative Systemic Lupus erythematosus disease activity index (SLEDAI), as well as a significant inverse correlation between it and 24 hours urinary proteins. Variable degrees of CXCR3expression seemed to have no impact on laboratory tests, British Isles Lupus Assessment Group (BILAG) score and cumulative doses of Immunosuppressives. Conclusion: Serum CD4+CXCR3+ and not renal CXCR3 may be a potential marker of LN activity
Membrane endothelial protein C receptor expression in renal tissue of pediatric lupus nephritis patients
Background: Lupus nephritis (LN) is more common and more severe is pediatric systemic lupus erythematosus (pSLE). Endothelial protein C receptor (EPCR) is an inducer of anti-apoptotic pathways in endothelial cells. Recent studies have taken elevated anti-injury biomarkers as EPCR into consideration regarding their roles to antagonize LN.Objectives: to evaluate the membrane expression of endothelial protein C receptor (mEPCR) in the renal microvasculature in pediatric patients with LN.Methods: This study was conducted on 25 patients with pSLE following up at the Allergy and Immunology Clinic, Childrenās Hospital, Ain Shams University. The 25 patients have LN proved by a previous renal biopsy. Medical history, clinical examination and routine laboratory investigations for assessment of disease activity were done for all patients. Paraffin blocks of patientsā renal biopsies were subjected to immunohistochemistry staining for the frequency of mEPCR.Results: mEPCR was mainly expressed in the endothelium of the peritubular capillaries. Our results showed that an equal number of patients had nil and mild marker expression (8 patients each, 32%) while 9 patients (36%) showed moderate/strong marker expression. We found that 9 out of 10 (90%) of patients with class II had nil/mild marker expression, 5 patients out of 9 (55.5%) with class III had mild/moderate marker expression, while 5 patients 0ut of 6 (83.3%) with class IV and V had moderate/strong marker expression. We only found a significant statistical difference between the different degrees of mEPCR expression regarding 24 hours urinary proteins. No statistical significance was found between the different degrees of mEPCR expression and different immuno-suppressive therapy dose/kg or renal outcome using the renal British Isles Lupus Assessment Group (BILAG) score; in spite that most of the patients who got improved had nil/mild marker expression.Conclusion: mEPCR -bearing a statistically significant difference in relation to different LN classes- showed more expression in the more aggressive classes; a finding which might suggest a contribution of the endothelium of the renal parenchyma to the pathophysiology of more progressive LN. Hence the tissue marker might emerge as a potential new therapeutic target in the search for more selective treatment for SLE.Keywords: p SLE, mEPCR, renal biopsy, immunohistochemistry, BILAG, lupus nephriti
Study of Visfatin Level in Type 1 Diabetic Children and Adolescents
BACKGROUND: Visfatin is an intracellular enzyme, known as nicotinamide phosphoribosyltransferase (Nampt) and pre-B-cell colony-enhancing factor (PBEF-1). It has insulin-mimetic effects and lowers plasma glucose levels.AIM: The aim of the work was to assess serum concentration of Visfatin in type 1 diabetic children and adolescents and study its relationships with duration of diabetes, body mass index (BMI), glycemic control, insulin dosage, lipid profile and microvascular complications.MATERIAL AND METHODS: Fifty children and adolescents with type 1 diabetes mellitus were recruited with 30 ages and gender-matched healthy subjects. They were subjected to history taking; anthropometric measurements and chronic diabetic complications were recorded if present. Laboratory analysis included urinary microalbumin, serum triglycerides, HDL, LDL, cholesterol, fasting blood glucose, glycosylated Hb (HbA1c) and serum visfatin which was measured with enzyme-linked immunosorbent assay.RESULTS: Diabetic patients showed highly significant decrease in the level of visfatin compared to the control group (P = 0.0001).There was significant further decrease in visfatin level in diabetics with microalbuminuria (n = 13) compared to normoalbuminuric patients (n = 37) (P = 0.015). There was highly significant inverse correlation between visfatin level with age (r = -0.379, p = 0.007), BMI (r = -0.418, p = 0.003), waist circumference (r = -0.430, p = 0.002), hip circumference (r = -0.389, p = 0.005) and microalbuminuria (r = -0.323, p = 0.022).CONCLUSIONS: Type 1 diabetic children and adolescents had a significantly lower visfatin level compared to controls. A marked decrease in the level of visfatin was shown in patients with microalbuminuria with an inverse correlation with BMI suggesting an important role of visfatin in the pathogenesis of type 1 diabetics and type 1 diabetic nephropathy
Natural Immunomodulators Treat the Cytokine Storm in SARS-CoV-2
Recently, the world has been dealing with a destructive global pandemic Coronavirus disease 2019 (COVID-19) infection, since 2020; there were millions of infections and hundreds of thousands of deaths worldwide. With sequencing generations of the virus, around 60% are expected to become infected during the pandemic. Unfortunately, no drug or vaccine has been approved because no real evidence from clinical trials in treatment was reached. According to current thinking, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) mortality is caused by a cytokine storm syndrome in patients with hyper-inflammatory conditions, resulting in acute respiratory distress and finally death. In this review, we discuss the various types of natural immune-modulatory agents and their role in the management of SARS-CoV-2, and cytokine storm syndrome. For example, Polyphenols as natural products can block the binding of SARS-CoV-2 spike protein to host cell receptor ACE2, stop viral entry into the host cell and block viral RNA replication. Also, saikosaponins (A, B2, C, and D), triterpene glycosides, which are isolated from medicinal plants exert antiviral action against HCoV-22E9, and Houttuynia cordata water extract has antiviral effects on SARS-CoV. Moreover, eucalyptus oil has promising potential for COVID-19 prevention and treatment. There is an urgent need for research to improve the function of the human immune system all over the world. As a result, actions for better understanding and improving the human immune system are critical steps toward mitigating risks and negative outcomes. These approaches will be strongly recommended for future emerging viruses and pathogens
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