scholarly journals Current Concepts on Immunopathology of COVID-19 and Emerging Therapies

2020 ◽  
Vol 8 (3) ◽  
Author(s):  
Leila Azimi ◽  
Abdollah Karimi ◽  
Masoud Alebouyeh ◽  
Armin Shirvani ◽  
Saeid Maham ◽  
...  
Keyword(s):  
Scientific Community ◽  
Virus Entry ◽  
Genome Structure ◽  
Final Analysis ◽  
Analysis Method ◽  
Randomized Controlled ◽  
Emerging Therapies ◽  
Safe Vaccine ◽  
Structure Similarity ◽  
Entry Inhibition

Context: This scoping review tries to synthesize early findings on the immunopathogenicity of SARS-CoV-2 to assess the emerging therapies and vaccines by evaluating their impact based on the mechanism of pathogenicity. Methods: The three databases of PubMed, Scopus, and Google Scholar were searched from January 1, 2020, to March 15, 2020. To extract the results from the studies, the content, thematic analysis method was used. In this method, the topics studied were coded in the articles, and then major topics related to the articles were determined. After identifying major issues, the contents of the articles were reviewed. Results: A total of 2,250 articles were retrieved after deleting duplications, and after reviewing the thematic relevance, 45 of them were selected for the final analysis. Topics studied in the articles were classified into four main areas, including “virus entry inhibition and immune response”, “vaccine and treatment targets”, “genome structure similarity to other coronaviruses,” and “pathogensis”. Conclusions: Results of this review showed that we have a long way to develop an effective and safe vaccine due to the structural and behavioral complexities of this virus. In the meantime, the scientific community should use results of megatrials, but until their accomplishing them, we have to use results of systematic reviews of randomized controlled trials.

scholarly journals Comparison of post-treatment changes with and without retention in adolescents treated for maxillary impacted canines—a randomized controlled trial

2020 ◽  
Author(s):  
Sasan Naraghi ◽  
Niels Ganzer ◽  
Lars Bondemark ◽  
Mikael Sonesson
Keyword(s):  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Contact Point ◽  
Final Analysis ◽  
Post Treatment ◽  
Single Centre ◽  
Randomized Controlled ◽  
Anterior Teeth ◽  
Retention Group ◽  
Interim Period

Summary Objective To evaluate whether retention is needed after orthodontic treatment of impacted maxillary canines. Trial design Two-arm parallel group single-centre randomized controlled trial. Materials and methods Sixty-three patients, 39 girls and 24 boys, were recruited to the study. The inclusion criteria were patients with at least one impacted or unerupted maxillary canine, and moderate irregularity of the maxillary six anterior teeth according to Little’s index (LI). After gaining informed consent from the patient and their custodians, the patients were randomized to one of two groups, i.e. to a non-retention group or a retention group. The randomization process was prepared and carried out by an independent person not involved in the trial and the randomization used blocks of 20 (10 + 10). Primary outcomes were changes in single contact point discrepancy, and LI measured on digitalized three-dimensional study casts 1-year post-treatment. The study casts were anonymized before assessment and the changes were blinded for the assessor. Data were evaluated on an intention-to-treat basis. Thus, all randomized patients were incorporated into the final analysis. In the non-retention group a 10-week interim period was used to detect patients who eventually have a relapse immediately after treatment. If so, the patient got the arch-wire reinserted. Most patients in the retention group received a vacuum-formed retainer and pretreatment spacing cases got a bonded retainer. Results Mean irregularity change was 0.4 mm in the retention and 1.3 mm in the non-retention group (P < 0.001). Maximum change was 2.5 mm in the retention and 3.2 mm in the non-retention group (P < 0.001). Most changes in the non-retention group occurred during the 10-week interim period. In the non-retention group, one patient developed contact point discrepancy of >2 mm during the interim period and was realigned. Harms One patient met the stopping guideline criteria. This patient had the arch wire reinserted for 2 months. After realignment, the patient received a retention appliance. Limitations The trial was a single-centre study and short-term changes were evaluated. Conclusions Changes between the retention and the non-retention group were statistically but not clinically significant. Since satisfactory clinical results 1-year post-treatment were found in the non-retention group, retention does not appear to be needed. The 10-week interim period was useful in detecting patients who might have a relapse immediately after treatment. Trial registration The trial was not registered.

scholarly journals Multivessel versus culprit-only PCI in STEMI patients with multivessel disease: meta-analysis of randomized controlled trials

2020 ◽  
Vol 109 (11) ◽  
pp. 1381-1391 ◽  
Author(s):  
Hans-Josef Feistritzer ◽  
Alexander Jobs ◽  
Suzanne de Waha-Thiele ◽  
Ingo Eitel ◽  
Anne Freund ◽  
...  
Keyword(s):  
Cardiogenic Shock ◽  
Randomized Controlled Trials ◽  
Primary Endpoint ◽  
Meta Analysis ◽  
Random Effect ◽  
Final Analysis ◽  
Controlled Trials ◽  
Cochrane Central Register ◽  
Risk Of Death ◽  
Randomized Controlled

Abstract Aims To perform a pairwise meta-analysis of randomized controlled trials (RCTs) comparing multivessel percutaneous coronary intervention (PCI) and culprit vessel-only PCI in ST-elevation myocardial infarction (STEMI) patients without cardiogenic shock. Methods We searched MEDLINE, Cochrane Central Register of Controlled Trials, and Embase for RCTs comparing multivessel PCI with culprit vessel-only PCI in STEMI patients without cardiogenic shock and multivessel coronary artery disease. Only RCTs reporting mortality or myocardial reinfarction after at least 6 months following randomization were included. Hazard ratios (HRs) were pooled using random-effect models. Results Nine RCTs were included in the final analysis. In total, 523 (8.3%) of 6314 patients suffered the combined primary endpoint of death or non-fatal reinfarction. This primary endpoint was significantly reduced with multivessel PCI compared to culprit vessel-only PCI (HR 0.63, 95% confidence interval [CI] 0.43–0.93; p = 0.03). This finding was driven by a reduction of non-fatal reinfarction (HR 0.64, 95% CI 0.52–0.79; p = 0.001), whereas no significant reduction of all-cause death (HR 0.77, 95% CI 0.44–1.35; p = 0.28) or cardiovascular death (HR 0.64, 95% CI 0.37–1.11; p = 0.09) was observed. Conclusions In STEMI patients without cardiogenic shock multivessel PCI reduced the risk of death or non-fatal reinfarction compared to culprit vessel-only PCI.

Stability of maxillary anterior teeth after 2 years of retention in adolescents: a randomized controlled trial comparing two bonded and a vacuum-formed retainer

2020 ◽  
Author(s):  
Sasan Naraghi ◽  
Niels Ganzer ◽  
Lars Bondemark ◽  
Mikael Sonesson
Keyword(s):  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Contact Point ◽  
Three Dimensional ◽  
Final Analysis ◽  
Single Centre ◽  
Retention Capacity ◽  
Intention To Treat ◽  
Randomized Controlled ◽  
Anterior Teeth

Summary Background Retention of the maxillary anterior teeth is commonly recommended to maintain the teeth in their corrected positions. Both fixed and removable retention methods are used, but the certainty of evidence is low. Objective To evaluate post-treatment changes in irregularity of the maxillary six anterior teeth and single tooth contact point discrepancy (CPD) of three different retention methods. Trial design Three-arm parallel group single-centre randomized controlled trial. Materials and methods Ninety patients, 54 girls and 36 boys, were recruited to the study. The inclusion criteria were adolescent patients treated with fixed appliances at least in the maxilla. After gaining informed consent from the patient and their custodians, the patients were randomized to one of three groups: bonded retainer 13–23, bonded retainer 12–22, and removable vacuum-formed retainer (VFR) covering the maxillary teeth including the second molars. The randomization, prepared by an independent person, used blocks of 30. The primary outcomes were changes in single CPD and Little’s irregularity index (LII) measured on digitalized three-dimensional study casts before and after 2-year retention. The study casts were anonymized before assessment and the changes were blinded for the assessor. Data were evaluated on an intention-to-treat basis. Thus, all randomized patients were incorporated into the final analysis. Results The LII and CPDs increased slightly in all three groups without any statistically significant differences between the groups. The VFR group showed a small intercanine width increase and some more changes of canine rotations than in the other groups. Harms No harm was observed in any subjects and none of the patients needed retreatment. Limitations The trial was a single-centre study and short-term changes were evaluated. Conclusions All three retention methods showed equally effective retention capacity and all the changes found in the three groups were small and considered clinically insignificant. Thus, the null hypothesis was confirmed. All three methods can be recommended. Trial registration NCT04616755

scholarly journals The Effects of Flaxseed Supplementation On Circulating Adipokines Concentration in Patients With Ulcerative Colitis

2021 ◽  
Author(s):  
Nava Morshedzadeh ◽  
Mehran Rahimlou ◽  
Shabnam Shahrokh ◽  
Soheila Karimi ◽  
Vahid Chaleshi ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Controlled Trial ◽  
Final Analysis ◽  
Gastrointestinal Diseases ◽  
Beneficial Effects ◽  
Randomized Controlled ◽  
Significant Difference ◽  
Baseline Weight ◽  
Inflammatory Bowel ◽  
And Control

Abstract Introduction: Inflammatory bowel disease (IBD) is one of the most common gastrointestinal diseases that can affect people of all ages. Adipokines secreted from adipose tissue have been shown to play an important role in the pathogenesis of ulcerative colitis (UC). The aim of this study was to evaluate the effect of supplementation with your seed on the concentrations of adiponectin, resistin and visfatin in patients with UC.Methods: This trial is an open-labeled randomized controlled trial which conducted among 70 patients with UC. Patients were randomly divided into two groups: flaxseed and control. Patients in the intervention were received 30 g/day flaxseed powder for 12 weeks. Anthropometric, nutritional and biochemical factors of patients were evaluated at the beginning and end of the intervention period.Results: Totally, 64 patients (36 men and 28 women) with mean age of 31.12 ± 9.67 included in the final analysis. There wasn’t any significant difference between two groups in term of baseline weight and height (P>0.05). After the 12 weeks' intervention, flaxseed supplementation led to a significant reduction in the resistin (-4.85 ± 1.89 vs. -1.10 ± 2.25, P<0.001) and visfatin concentration (-1.33± 1.14 vs. -0.53 ± 1.63, P=0.018). Moreover, we found a significant increase in the adiponectin levels after the flaxseed supplementation (3.49 ± 1.29 vs. -0.35 ± 0.96, P<0.001).Conclusion: It has been reported in this study that flaxseed supplementation could exert beneficial effects on adipokine levels in patients with UC. Trial registration: IRCT registration no. IRCT20180311039043N1

scholarly journals Efficacy of montelukast in the management of COVID-19: double blind randomized placebo controlled trial

2021 ◽  
Vol 10 (12) ◽  
pp. 1374
Author(s):  
Vijay Kumar ◽  
Avinash A. Ganapule ◽  
Sushmita Supriya ◽  
Divendu Bhushan ◽  
Pallavi Lohani ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Primary Outcome ◽  
Controlled Trial ◽  
Severe Disease ◽  
Final Analysis ◽  
Standard Operating Procedure ◽  
Double Blind ◽  
Randomized Controlled ◽  
Secondary Outcomes ◽  
Double Blinded

Background: Objective of the study was to determine the efficacy of montelukast in reducing the severity of COVID-19 symptoms using a double blinded randomized controlled trial.Methods: Parallel, double-blinded randomized controlled trial (RCT) with placebo as comparison to montelukast. All patients above the age of 14 years both males and females, admitted with a diagnosis of mild or moderate COVID-19 (on the basis of a positive reverse transcriptase polymerase chain reaction (RT-PCR) report) at our facility during the study period from 01 September 2020-31 January 2021) and excluding those having adverse reaction to montelukast or those not willing to participate, and pregnant and lactating females. Patients in the intervention arm were given tablet montelukast 10 mg OD HS from the day of admission for 10 days. The patients in the placebo group were given an identical appearing placebo at bedtime for 10 days from the day of admission. The rest of the treatment was given as per the standard operating procedure (SOP) of the institute with minor adjustments as per the treating team’s judgement. Primary outcome was progression of the disease to severe grade and secondary outcomes were discharge on or before day 10 from admission, admission to ICU, need for mechanical ventilation and in-hospital mortality.Results: A total of 94 patients were enrolled for the study. 90 patients, 45 in each arm were included in the final analysis. The baseline characteristics of the two arms including age, sex, comorbidities, severity at admission and treatment given apart from montelukast or placebo, were comparable with respect to these variables. This study did not find any improvement in primary outcome of progression to severe disease and secondary outcomes of intensive care unit (ICU) admission, mortality or need of mechanical ventilation, discharge on or by day 10 with the use of montelukast as compared to placebo in mild to moderate cases of COVID-19.Conclusions: There was no difference in primary or secondary outcomes with the use of Montelukast compared to placebo.

scholarly journals Metabolism Of Brain Signals On Human Sleep : a review of mechanisms of action

2022 ◽  
Author(s):  
Alireza N Arabestani ◽  
Arman Ai ◽  
Nayer Sari Motlagh ◽  
Sina Naghibi Irvani ◽  
Mahdi Arabestanino ◽  
...  
Keyword(s):  
Web Of Science ◽  
Scientific Literature ◽  
Final Analysis ◽  
Neuronal Function ◽  
Randomized Controlled ◽  
Brain Signals ◽  
Before And After ◽  
Online Library ◽  
Stage 1 ◽  
Identification Phase

Abstract Background The global research shows that people suffer from a variety of sleep disorders and human actions are the result of neuronal function inside his brain, the feedback of this function can be received and processed as a signal emitted from the surface of the skull. EEG device can receive and record brain signals. Researchers have used a variety of methods to obtain and pre-process signals, extract and reduce the characteristics and types of classifiers in various studies. Research shows that there are three general states of wakefulness (stage 1 + REM sleep) and (stage 2 + deep sleep) separated by the EEG signal. Methods The study was performed in accordance with the PRISMA guidelines. A total of 740 articles were found from scientific literature databases (PubMed, Scopus, Web of Science and Wiley Online Library ). After all exclusions, a final total of 64 articles were included in this review. The randomized controlled trials that have assessed at least one therapeutic outcome measured before and after intervention were included in the final analysis. Results A total of 64 studies were identified at the screening step. In the identification phase, total of 11 records were excluded from the further assessment and 53 records were entered into the screening phase in which Clinical Trial, Review, Books, Editorial were excluded from the review. In the eligibility stage, 49 records remained in the study where total of 34 studies were included for detailed review. Due to the heterogeneities in the available variables as well as the target aspects, the authors decided to review the studies comprehensively. Conclusions However, due to some concerns about its effectiveness, more targeted experiments are needed to identify more accurate targets and pathways responsible for the metabolism of its brain signals.

scholarly journals Hot snare vs. cold snare polypectomy for endoscopic removal of 4 – 10 mm colorectal polyps during colonoscopy: a systematic review and meta-analysis of randomized controlled studies

2019 ◽  
Vol 07 (05) ◽  
pp. E708-E716 ◽  
Author(s):  
Ramprasad Jegadeesan ◽  
Muhammad Aziz ◽  
Madhav Desai ◽  
Tharani Sundararajan ◽  
Venkata Gorrepati ◽  
...  
Keyword(s):  
Meta Analysis ◽  
Final Analysis ◽  
Complete Removal ◽  
Risk Difference ◽  
Colorectal Polyps ◽  
Incomplete Resection ◽  
Randomized Controlled ◽  
Randomized Controlled Studies ◽  
Cold Snare Polypectomy ◽  
Snare Polypectomy

Abstract Introduction In recent years, cold snare polypectomy (CSP) has increasingly been used over hot snare polypectomy (HSP) for the removal of colorectal polyps (4 – 10 mm in size). However, the optimal technique (CSP vs. HSP), in terms of complete polyp resection and complications, is uncertain. Our aim was to compare incomplete resection rate (IRR) of polyps and complications using CSP vs. HSP. Methods Randomized controlled studies (RCTs) comparing CSP and HSP for removal of 4 – 10 mm colorectal polyps were considered. Studies were included in the analysis if they obtained biopsy specimens from the resection margin to confirm the absence of residual tissue and reported complications. IRR and complication rate were the outcome measures. Pooled rates were reported as Odds Ratios (OR) or risk difference with 95 % Confidence Interval (CI). Results In total, three RCTs were included in the final analysis. A total of 1051 patients with 1485 polyps were randomized to either HSP group (n = 741 polyps) or CSP group (n = 744 polyps). The overall IRR did not differ between the two groups (HSP vs. CSP: 2.4 % vs. 4.7 %; OR 0.51, 95 %CI 0.13 – 1.99, P = 0.33, I 2 = 73 %). The HSP group had a lower rate of overall complications compared to the CSP group (3.7 % vs. 6.6 %; OR 0.53, 95 % CI 0.3 – 0.94, P = 0.03, I 2 = 0 %). Polyp retrieval rates were not different between the two groups (99 % vs. 98.1 %). Conclusion Our results suggest that HSP and CSP techniques can be effectively used for the complete removal of 4 – 10 mm colorectal polyps; however, HSP has a lower incidence of overall complications.

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