Which surrogate insulin resistance indices best predict coronary artery disease? A machine learning approach.

BACKGROUND: Various surrogate markers of insulin resistance have been developed, capable of predicting coronary artery disease (CAD) without the need to detect serum insulin. For accurate prediction, they depend only on glucose and lipid profiles, as well as anthropometric features. However, there is still no agreement on the most suitable one for predicting CAD. METHODS: We followed a cohort of 2,000 individuals, ranging in age from 20 to 74, for a duration of 9.9 years. We utilized multivariate Cox proportional hazard models to investigate the association between TyG-index, TyG-BMI, TyG-WC, TG/HDL, plus METS-IR and the occurrence of CAD. The receiver operating curve (ROC) was employed to compare the predictive efficacy of these indices and their corresponding cutoff values for predicting CAD. We also used three distinct embedded feature selection methods: LASSO, Random Forest feature selection, and the Boruta algorithm, to evaluate and compare surrogate markers of insulin resistance in predicting CAD. In addition, we utilized the ceteris paribus profile on the Random Forest model to illustrate how the model's predictive performance is affected by variations in individual surrogate markers, while keeping all other factors consistent in a diagram. RESULTS: The TyG-index was the only surrogate marker of insulin resistance that demonstrated an association with CAD in fully adjusted model (HR: 2.54, CI: 1.34-4.81). The association was more prominent in females. Moreover, it demonstrated the highest area under the ROC curve (0.67 [0.63-0.7]) in comparison to other surrogate indices for insulin resistance. All feature selection approaches concur that the TyG-index is the most reliable surrogate insulin resistance marker for predicting CAD. Based on the Ceteris paribus profile of Random Forest the predictive ability of the TyG-index increased steadily after 9 with a positive slope, without any decline or leveling off. CONCLUSION: Due to the simplicity of assessing the TyG-index with routine biochemical assays and given that the TyG-index was the most effective surrogate insulin resistance index for predicting CAD based on our results, it seems suitable for inclusion in future CAD prevention strategies.

Onabotulinum toxin A improves neurogenic detrusor overactivity following spinal cord injury: a systematic review and meta-analysis.

STUDY DESIGN: Systematic review and meta-analysis. OBJECTIVES: The current study aimed to assess the efficacy and safety of Onabotulinum toxin A (OBTX-A) treatment for neurogenic detrusor overactivity (NDO) in spinal cord injury (SCI) patients. SETTING: Iran. METHODS: All relevant articles of clinical trials and cohort studies indexed in PubMed/MEDLINE, Embase, Scopus, and Web of Science databases up to September 6, 2022, that addressed OBTX-A treatment for NDO following SCI were included. The quality of eligible studies was evaluated using Cochrane criteria. Also, the weighted mean difference (WMD) was measured with a random-effect model. RESULTS: Regarding the overall efficacy after OBTX-A treatment in the short term, volume per void (VV) (WMD = 118.8, 95% CI: 90.9-146.7, p < 0.01), incontinence-quality of life (IQoL) (WMD = 24.3, 95% CI: 15.8-32.8, p < 0.01), and maximum cystometric capacity (MCC) (WMD = 144.5, 95% CI: 132.3 to 156.7, p < 0.01) significantly increased, while maximum detrusor pressure during storage (MDP) (WMD = -30.5, 95% CI: -35.9 to -25.1, p < 0.01) showed a significant decrease. Furthermore, compared to the placebo group at the 200-unit dose, there was a significant increase in MCC (WMD = 113.5, 95% CI: 84.7 to 142.3, p < 0.01) and a significant decrease in MDP (WMD = -27.2, 95% CI: -39.2 to -15.1, p < 0.01). Urinary tract infection (UTI), hematuria, and autonomic dysreflexia were the most common side effects, occurring at rates of 29.6%, 14.8%, and 13.4%, respectively. CONCLUSION: Our findings highlighted the effectiveness and safety of OBTX-A as a promising treatment of NDO following SCI.

Multiple sclerosis and the incidence of venous thromboembolism: a systematic review and meta-analysis.

A number of studies have suggested that multiple sclerosis (MS) can be associated with serious vascular complications, for which pulmonary thromboembolism (PTE) is a potentially lethal complication. The purpose of this study is to establish a current literature-based estimate of the incidence of venous thromboembolism (VTE), deep vein thrombosis (DVT), and PTE in patients with MS (pwMS) due to the lack of systematic reviews and meta-analyses on this topic. In this systematic review and meta-analysis, studies were assessed regarding the association between MS and the incidence of VTE. The studies were identified through a systematic search of major electronic databases spanning the period from 1950 to February 2022. A random-effects analysis was conducted to calculate the pooled effect size (ES) and 95% confidence intervals (CI) using STATA software. Nine out of 4605 studies were included in the meta-analysis, with an overall sample size of 158,546 individuals. Meta-analysis revealed that the pooled incidence of VTE was 1.8% (95% CI 1.4-2.3) among pwMS. Also, there was an incidence of 0.9% (95% CI 0.4-1.4) and 1.5% (95% CI 1-2.2) for PTE and DVT, respectively in pwMS. Analysis showed MS would be significantly associated with a twofold increased risk of VTE [risk ratios (RR) = 2.12 (95% CI 1.53-2.93)]. Although MS is not typically considered a major risk factor for VTE, the meta-analysis of cohort studies shows that MS has a relative association with an increased incidence of VTE. Future research should focus on the investigation of the effects of MS and its treatments on VTE risk, and also a full range of confounding adjustments will be needed.

Addressing conflicts of interest regarding the vaccine in infectious disease outbreaks based on good governance for health approach: a policy brief.

BACKGROUND: Infectious disease outbreaks pose a significant threat to public health, and achieving herd immunity highlights the importance of addressing conflicts of interest (COI) in vaccine development and policy-making. This policy brief aims to present policy options that address COI regarding vaccines in infectious disease outbreaks, based on good governance for health approach. METHODS: Our study used a scoping review methodology. We conducted a systematic search, which led to identifying 43 eligible articles. A qualitative approach (i.e., content analysis) was employed for data analysis, using "ATLAS.ti 9" software. The primary results underwent a process of cleaning, categorisation, and subsequent discussion in three sessions with the research team. RESULTS: Relationships between theindustry and "government/policymakers" as well as "academic institutions/researchers" are prominent origins of COI regarding the vaccine in infectious disease outbreaks. To address this issue, we present nine policy options that target both the root cause of the problem and the adoption of good governance for health approach. CONCLUSIONS: The key principles of good governance for health, including, "Transparency", "The Rule of Law", "Effectiveness", "Efficiency", "Participation", "Consensus Orientation", "Equality", "Responsibility", "Responsiveness" and "Accountability" must be taken into account when formulating policy options to address COI regarding the vaccine in infectious disease outbreaks. The effectiveness of the policy options outlined in this policy brief should be assessed in practical contexts, as this evaluation may uncover the need for revisions.

Targeting the vital non-structural proteins (NSP12, NSP7, NSP8 and NSP3) from SARS-CoV-2 and inhibition of RNA polymerase by natural bioactive compound naringenin as a promising drug candidate against COVID-19.

The prevalence of SARS-CoV-2-induced respiratory infections is now a major challenge worldwide. There is currently no specific antiviral drug to prevent or treat this disease. Infection with COVID-19 seriously needs to find effective therapeutic agents. In the present study, naringenin, as a potential inhibitor candidate for RNA Polymerase SARS-CoV-2 was compared with remdesivir (FDA-approved drug) and GS-441,524 (Derivative of the drug remdesivir) by screening with wild-type and mutant SARS-CoV-2 NSP12 (NSP7-NSP8) and NSP3 interfaces, then complexes were simulated by molecular dynamics (MD) simulations to gain their stabilities. The docking results displayed ​scores of -3.45 kcal/mol and -4.32 kcal/mol against NSP12 and NSP3, respectively. Our results showed that naringenin had ΔG values more negative than the ΔG values of Remdesivir (RDV) and GS-441,524. Hence, naringenin was considered to be a potential inhibitor. Also, the number of hydrogen bonds of naringenin with NSP3 and later NSP12 are more than Remdesivir and its derivative. In this research, Mean root mean square deviation (RMSD) values of NSP3 and NSP12with naringenin ligand (5.55±1.58 nm to 3.45±0.56 nm and 0.238±0.01 to 0.242±0.021 nm, respectively showed stability in the presence of ligand. The root mean square fluctuations (RMSF) values of NSP3 and NSP12 amino acid units in the presence of naringenin in were 1.5 ± 0.31 nm and 0.118±0.058, respectively. Pharmacokinetic properties and prediction of absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties of naringenin and RDV showed that ​these two compounds had no potential cytotoxicity.

Possible Therapeutic Targets from Derivatives of Natural Marine Products Based on PI3K/AKT Dependent Inhibitors in Viral Infection COVID-19.

Natural resources have long played a prominent part in conventional treatments as a parental source due to their multifaceted functions and lesser side effects. The diversity of marine products is a significant source of possible bioactive chemical compounds with a wide range of potential medicinal applications. Marine organisms produce natural compounds and new drugs with unique properties are produced from these compounds. A lot of bioactive compounds with medicinal properties are extracted from marine invertebrates, including Peptides, Alkaloids, Terpenoids, Steroids. Thus, it can be concluded that marine ecosystems are endowed with natural resources that have a wide range of medicinal properties, and it is important to examine the therapeutic and pharmacological capabilities of these molecules. So, finding particular inhibitors of the COVID-19 in natural compounds will be extremely important. Natural ingredients, in this light, could be a valuable resource in the progression of COVID-19 therapeutic options. Controlling the immunological response in COVID-19 patients may be possible by addressing the PI3K/Akt pathway and regulating T cell responses. T cell effector activity can be improved by preventing anti-viral exhaustion by suppressing PI3K and Akt during the early anti-viral response. The diversity of marine life is a significant supply of potentially bioactive chemical compounds with a broad range of medicinal uses. In this study, some biologically active compounds from marine organisms capable of inhibiting PI3K/AKT and the possible therapeutic targets from these compounds in viral infection COVID-19 have been addressed.

Occurrence and genetic characterization of Echinococcus granulosus sensu lato from domestic animals in Central Iran.

BACKGROUND: The species complex of Echinococcus granulosus sensu lato (s.l.) causes cystic echinococcosis distributed worldwide. There is no genotype information from hydatid cysts in the intermediate hosts in Central Iran. Therefore, in this study, we analyzed the hydatid cysts in livestock slaughtered in an abattoir in this region. Six hundred fifty-seven hydatid cysts were isolated from 97 animals, including sheep, cattle, camels, and goats slaughtered in Yazd abattoir from September 2018 to January 2020. The demographic data was collected as well as cyst location, fertility, and viability. Out of 657 samples, 164 samples were genotyped. Then, phylogenetic analysis was performed using MEGAX. Statistical analyses were done using SPSS version 16.0 by chi-square with a significant difference of less than 0.05. RESULTS: Out of 164 samples, the G1-G3 complex genotype had the most frequency in samples, with 135 cases recognized. The G6/G7 was observed in 19 isolates and G5 was reported in nine samples. One sample was detected as Taenia hydatigena. CONCLUSIONS: This study showed that G1-G3 and G6/G7 genotypes were presented in all animals, but G5 was reported only in cattle, goats, and camels. It is the first molecular identification of cystic echinococcosis in Central Iran. Hence, reporting G5 in livestock in this area should be considered due to transmission to humans.

Unraveling the Mystery of COVID-19 Postvaccination Myocarditis: A Systematic Review of Current Cases.

From the early stages of the pandemic, the development and mass production of a safe and effective vaccine seemed like the greatest tool, to win the fight against the virus. In the present study, we comprehensively conducted a systematic review of all current cases worldwide to better understand whether there is a link between COVID-19 vaccination and one of the most devastating complications, cardiac Inflammation. Our search retrieved over 250 results, of which 130 met the inclusion criteria, and their respective data were extracted. The results suggest that postvaccination myocarditis and pericarditis are more likely to be seen in male, younger, and mRNA-vaccinated individuals. Most affected patients experienced symptoms following the second shot, and complaint of chest pain was the most prevalent presentation. Currently, no direct link can be drawn between the vaccines and the risk of cardiac inflammation.

Incidence of Guillain-Barré Syndrome (GBS) after COVID-19 Vaccination: a Systematic Review and Meta-Analysis.

BACKGROUND: Global vaccination against COVID-19 will help nations to overcome the pandemic stage as soon as possible. Guillain-Barré syndrome (GBS) is an acute immune-mediated inflammatory disease of the peripheral nerves (PNS) that is reported as a complication of both COVID-19 and vaccines. Up to now, case reports regarding the incidence of GBS have been reported after different COVID-19 vaccines worldwide. So, the aim of this systematic review and meta-analysis is to estimate the pooled incidence of GBS after COVID-19 vaccination. METHODS: Two expert researchers conducted a systematic search in PubMed, Scopus, EMBASE, Web of Science, Google Scholar as well as gray literature in order to find relevant articles published before September 2022. RESULTS: After deleting duplicates, we found 1021 articles, of which 458 studies were further evaluated. A final number of 21 studies remained for meta-analysis, with most of those being from the USA, UK and Mexico. Follow-up duration was between 21-42 days. Out of the total number of 2.35x109 patients included in the final meta-analysis, 3654 subjects developed GBS after vaccination, most of whom were males. Incidence of GBS per million ranged between 0.23 and 9.8. The pooled incidence of GBS following vaccination was 0%.

Prevalence of cognitive impairment (CI) in patients with multiple sclerosis (MS): A systematic review and meta-analysis.

Background: One of the complications of multiple sclerosis (MS) is cognitive impairment (CI). The prevalence of CI is reported variously in previous studies. The goal of this systematic review and meta-analysis to estimate pooled prevalence of CI in patients with MS and also the prevalence of CI based on the type of applied test. Methods: Two independent researchers systematically searched PubMed, Scopus, EMBASE, Web of Science, and google scholar as well as gray literature (conference abstracts, references of the references) which were published before up January 2022. Results: We found 4089 articles by literature search, after deleting duplicates 3174 remained. Ninety articles remained for meta-analysis. The pooled prevalence of CI using all types of tests was 41% (95% CI: 38-44%) (I2=91.7%, p<0.001). The pooled prevalence of CI using BRB test was 39% (95%CI: 36-42%) (I2=89%, p<0.001). The pooled prevalence of CI using BICAMS was 44% (95%CI: 37-51%, I2=95.4%, p<0.001). The pooled prevalence of CI using MACFIMS was 44% (95% CI: 36-53%) (I2=89.3%, p<0.001). Conclusions: The pooled prevalence of cognitive impairment in patients with MS is estimated as 41%, so CI it should be considered by clinicians.

Ginger for Pain Management in Primary Dysmenorrhea: A Systematic Review and Meta-Analysis.

Background: Primary dysmenorrhea is a common gynecological disorder that affects many women of reproductive age. Ginger, a widely used spice with anti-inflammatory properties, has been suggested as a potential treatment for the painful cramps associated with this condition. Objective: The aim of this systematic review and meta-analysis was to evaluate the efficacy of ginger for pain management in primary dysmenorrhea. Methods: Our systematic review was registered in Prospero (CRD42023418001). Six English (PubMed, Scopus, Web of Science, PsycINFO, CINAHL complete, and Cochrane) and one Persian electric database (SID) was searched up to May 2023 for English or Persian studies that measure the effect of ginger on pain in dysmenorrhea. The Cochrane tool was used to assess the risk of bias of the included studies. Random effects meta-analyses were performed to obtain standardized mean differences (SMD) and 95% confidence intervals (CI). Results: Out of the 804 articles initially identified from the search, 24 were included for qualitative analysis and 12 for quantitative analysis after a full-text evaluation. The combined results of the studies indicate that ginger is notably more effective than placebo in reducing both the intensity (SMD = -1.13; 95% CI = -1.59 to -0.68, I2 = 81.05%) and duration of pain (SMD = -0.29; 95% CI = -0.46 to -0.12). There were no differences between ginger and nonsteroidal anti-inflammatory drugs (NSAIDs) (SMD = 0.01; 95% CI = -0.24 to 0.25), or exercise (SMD = 0.06; 95% CI = -0.66 to 0.78) for pain intensity. Safety-related data were infrequently reported. Conclusions: The results of this meta-analysis suggest that ginger can effectively reduce pain associated with dysmenorrhea. The findings are limited due to risk of bias in the included studies and the unclear risk-benefit ratio.

Neurological efficacy and safety of mesenchymal stem cells (MSCs) therapy in people with multiple sclerosis (pwMS): An updated systematic review and meta-analysis.

BACKGROUND: Current therapeutic strategies for multiple sclerosis (MS) aim to suppress the immune response and reduce relapse rates. As alternative treatments, mesenchymal stem cells (MSCs) are being explored. MSCs show promise in repairing nerve tissue and reducing autoimmune responses in people with MS (pwMS). OBJECTIVE: This review delves into the literature on the efficacy and safety of MSC therapy for pwMS. METHODS: A comprehensive search strategy was employed to identify relevant articles from five databases until January 2024. The inclusion criteria encompassed interventional studies. Efficacy and safety data concerning MSC therapy in relapsing-remitting MS (RRMS), secondary progressive MS (SPMS), and primary progressive MS (PPMS) groups were extracted and analyzed. RESULTS: A comprehensive analysis encompassing 30 studies revealed that individuals who underwent intrathecal (IT) protocol-based transplantation of MSCs experienced a noteworthy improvement in their expanded disability status scale (EDSS) compared to the placebo group. Weighted mean difference (WMD) was -0.28; 95 % CI -0.53 to -0.03, I2 = 0 %, p-value = 0.028); however, the intravenous (IV) group did not show significant changes in EDSS scores. The annualized relapse rate (ARR) did not significantly decrease among pwMS (WMD = -0.34; 95 % CI -1.05 to 0.38, I2 = 98 %, p-value = 0.357). Favorable results were observed in magnetic resonance imaging (MRI), with only 19.11 % of pwMS showing contrast-enhanced lesions (CEL) in the short term and no long-term MRI activity. The most common complications in both short-term and long-term follow-ups were infection, back pain, and gastrointestinal symptoms. CONCLUSIONS: The study highlights the safety potential of MSC therapy for pwMS. While MRI-based neural regeneration shows significant treatment potential, the effectiveness of MSC therapy remains uncertain due to study limitations and ineffective outcome measures. Further research is needed to establish efficacy and optimize evaluation methods for MSC therapy on pwMS.

Asthma and chronic obstructive pulmonary disease (COPD) in people with multiple sclerosis: A systematic review and meta-analysis.

BACKGROUND: Studies have found that multiple sclerosis (MS) has an impact on the initiation or the course of asthma and chronic obstructive pulmonary disease (COPD). This review amied to investigate the prevalence and odds of asthma and COPD among people with MS (pwMS). METHOD: PubMed, Embase, Scopus, and Web of Science were systemically searched from inception to May 2023. R version 4.3.2 and random-effect model were used to calculate the pooled prevalence and odds ratio (OR), with their 95 % confidence interval (CI), in pwMS. RESULTS: A total of 40 studies consisting of 287,702 pwMS were included. 37 studies indicated that the pooled prevalences of asthma and COPD among pwMS were 5.97 % (95 % CI: 4.62 %-7.69 %, I2=99 %) and 3.03 % (95 % CI: 1.82 %-5.00 %, I2=99 %), respectively. 24 studies on 236,469 pwMS and 85,328,673 healthy controls revealed that the overall odds of asthma and COPD in MS were 1.14 (95 % CI: 0.76-1.71, p-value=0.53, I2=97 %) and 1.28 (95 % CI: 1.11-1.47, p-value<0.01, I2=70 %), respectively. CONCLUSION: MS can increased the risk of developing COPD, while asthma does not exhibit a significant relationship with MS. Our study highlights the importance of identifying pwMS who face greater risks of respiratory issues to monitor efficiently and initiate suitable preventative actions.

A Rare Case of Cerebrotendinous Xanthomatosis Associated With a Mutation on COG8 Gene.

Cerebrotendinous xanthomatosis (CTX) is a rare hereditary disease described by a mutation in the CYP27A1 gene, which encodes the sterol 27-hydroxylase enzyme involved in the synthesis of bile acid. Accumulation of cholesterol and its metabolite, cholestanol, in multiple body organs causes the symptoms of this disease. In addition, a mutation in the COG8 gene, which encodes a subunit of conserved oligomeric Golgi (COG) complex, causes another rare disorder attributed to type IIh of congenital disorder of glycosylation (CDG). We described a rare case of CTX disorder associated with a mutation on COG8 gene, which presented by unusual symptoms.

Incidence of Bell's palsy after coronavirus disease (COVID-19) vaccination: a systematic review and meta-analysis.

OBJECTIVE: To estimate the pooled incidence of Bell's palsy after COVID-19 vaccination. METHODS: PubMed, Scopus, EMBASE, Web of Science, and Google Scholar were searched by 2 independent researchers. We also searched the grey literature including references of the references and conference abstracts. We extracted data regarding the total number of participants, first author, publication year, the country of origin, sex, type of vaccines, and the number of patients who developed Bell's palsy after COVID-19 vaccination. RESULTS: The literature search revealed 370 articles, subsequently deleting duplicates 227 remained. After careful evaluation of the full texts, 20 articles remained for meta-analysis. The most commonly administered vaccines were Pfizer followed by Moderna. In total, 4.54e+07 individuals received vaccines against COVID-19, and 1739 cases developed Bell's palsy. In nine studies, controls (individuals without vaccination) were enrolled. The total number of controls was 1 809 069, of whom 203 developed Bell's palsy. The incidence of Bell's palsy after COVID-19 vaccines was ignorable. The odds of developing Bell's palsy after COVID-19 vaccines was 1.02 (95% CI: 0.79-1.32) (I2 = 74.8%, P < .001). CONCLUSION: The results of this systematic review and meta-analysis show that the incidence of peripheral facial palsy after COVID-19 vaccination is ignorable and vaccination does not increase the risk of developing Bell's palsy. Maybe, Bell's palsy is a presenting symptom of a more severe form of COVID-19, so clinicians must be aware of this.

Comparison of Diabetic Ketoacidosis Characteristics During- and Before the COVID-19 Pandemic.

Background: Despite evidence about the relationship between diabetic ketoacidosis (DKA) and infectious diseases, our knowledge of DKA during the coronavirus disease 2019 (COVID-19) pandemic remains unclear. Objectives: This study aimed to compare the DKA situation among individuals with type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM) during the COVID-19 pandemic compared to pre-pandemic. Methods: This retrospective-longitudinal study included individuals with T1DM and T2DM hospitalized with newly diagnosed DKA before (March to August 2018 and 2019) and during (March to August 2020 and 2021) the COVID-19 pandemic. Demographics, the frequency of new-onset diabetes mellitus (DM) and new-onset DKA, days of hospitalization, DKA severity, laboratory tests, and mortality were assessed. Results: Of 162 patients with DKA, 139 patients were newly diagnosed. The frequency of individuals with new-onset DM had increased during the pandemic compared to pre-pandemic (P = 0.047). Moreover, new-onset DKA was higher in 2020 and 2021 versus 2019 and 2018 (P = 0.002). Significantly, there were no T2DM patients with DKA in pre-pandemic, but DKA admissions in people with T2DM increased in 2021 (P < 0.001). The severity of new-onset DKA had increased during the pandemic compared to pre-pandemic (P = 0.000). However, there was no significant difference between pre-and the pandemic regarding mortality (P = 0.981). Additionally, hospitalization length (P = 0.043) and mortality (P = 0.038) were higher in patients with T2DM compared to T1DM. Conclusions: During the COVID-19 pandemic, the frequency of DKA and its severity was higher than in pre-pandemic, and COVID-19 can be more life-threatening in patients with T2DM. Therefore, healthcare providers should be alert to DKA, especially in patients with T2DM.

Myelin Oligodendrocyte Glycoprotein Antibody-Associated Disease and COVID-19: A Systematic Review.

Background: Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is an uncommon neurological disease affecting the central nervous system (CNS). Numerous neurological disorders, including multiple sclerosis (MS), neuromyelitis optica spectrum disorder (NMOSD), acute transverse myelitis (ATM), and MOGAD, have been reported following the COVID-19 infection during the current COVID-19 pandemic. On the other hand, it has been suggested that patients with MOGAD may be at greater risk for infection (particularly in the current pandemic). Objective: In this systematic review, we gathered separately 1) MOGAD cases following COVID-19 infection as well as 2) clinical course of patients with MOGAD infected with COVID-19 based on case reports/series. Methods: 329 articles were collected from 4 databases. These articles were conducted from inception to March 1st, 2022. Results: Following the screening, exclusion criteria were followed and eventually, 22 studies were included. In 18 studies, a mean ± SD time interval of 18.6 ± 14.9 days was observed between infection with COVID-19 and the onset of MOGAD symptoms. Symptoms were partially or completely recovered in a mean of 67 days of follow-up.Among 4 studies on MOGAD patients, the hospitalization rate was 25%, and 15% of patients were hospitalized in the intensive care unit (ICU). Conclusion: Our systematic review demonstrated that following COVID-19 infection, there is a rare possibility of contracting MOGAD. Moreover, there is no clear consensus on the susceptibility of MOGAD patients to severe COVID-19. However, obtaining deterministic results requires studies with a larger sample size.

Uric acid and glaucoma: a systematic review and meta-analysis.

Background: Glaucoma, the leading cause of irreversible blindness, is a common disorder that contributes to gradual optic nerve degeneration. The beneficial impacts of uric acid (UA) have been reported in some neurodegenerative conditions such as Parkinson's disease, Alzheimer's disease, and amyotrophic lateral sclerosis. But the results of current studies about the association between serum UA level and glaucoma are conflicting. The present meta-analysis was conducted to provide a better understanding of the association between serum UA level and glaucoma. Methods: We searched the databases of PubMed, Scopus, Web of Science, and Google Scholar systematically until November 20, 2022 to identify case-control studies, comparing the serum UA concentrations of the patients with glaucoma and controls. The mean ± standard division difference was used to assess the difference in serum UA concentrations between the glaucoma patients and controls. Results: Six studies involving 1,221 glaucoma patients and 1,342 control group were included in the present meta-analysis. This meta-analysis using a random effect model indicated that the mean UA level in glaucoma patients was 0.13 (I2 = 91.92%, 95% CI = -0.42 to 0.68) higher than the controls; however, it was not statistically significant. Conclusions: Our findings provide evidence that glaucoma patients have a higher serum UA level compared to the controls, but this difference is not statistically significant. Prospective studies are needed to determine the possible association between increased UA and glaucoma pathogenesis. Systematic review registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022364055, identifier: CRD42022364055.

Optical coherence tomography (OCT) measurements and disability in multiple sclerosis (MS): A systematic review and meta-analysis.

BACKGROUND: Studies have demonstrated that people with multiple sclerosis (pwMS) experience visual impairments and neurodegenerative retinal processes. The disability progression in pwMS may be associated with retinal changes assessed with optical coherence tomography (OCT). This meta-analysis aims at synthesizing the correlations between OCT measurements of disability in pwMS. METHODS: We systematically searched four databases (PubMed/MEDLINE, Embase, Scopus, and Web of Science) from inception to November 2022, then conducted a meta-analysis using a random effects model to determine the pooled correlation coefficient(r) between OCT measurements and disability scales by R version 4.2.3 with the meta version 6.2-1 package. RESULTS: From 3129 studies, 100 studies were included. Among 9051 pwMS, the female-to-male ratio was 3.15:1, with a mean age of 39.57 ± 6.07 years. The mean disease duration and Expanded Disability Status Scale (EDSS) were 8.5 ± 3.7 and 2.7 ± 1.1, respectively. Among the pooled subgroup analyses, macular ganglion cell inner plexiform layer (mGCIPL) in patients with relapsing-remitting (pwRRMS) and peripapillary retinal nerve fiber layer (pRNFL) in patients with progressive MS (pwPMS) had strong correlations with EDSS, r = -0.33 (95% CI: -0.45 to -0.20, I2 = 45%, z-score = -4.86, p < 0.001) and r = -0.20 (95% CI:-0.58 to 0.26, I2 = 76%, z-score = -0.85, p = 0.395), respectively. According to subgroup analysis on pwMS without optic neuritis (ON) history, the largest correlation was seen between EDSS and macular ganglion cell complex (mGCC): r = -0.39 (95% CI: -0.70 to 0.04, I2 = 79%, z-score = -1.79, p = 0.073). CONCLUSION: OCT measurements are correlated with disability in pwMS, and they can complement the comprehensive neurological visit as an additional paraclinical test.

Is Celiac Disease (CD) Prevalent in Patients with Multiple Sclerosis (MS): A Systematic Review and Meta-Analysis.

Background: Celiac disease (CD) is an autoimmune disease, and its prevalence reported variously in different studies. The goal of this study is to evaluate the pooled prevalence of CD in subjects with MS. Methods: PubMed, Scopus, EMBASE, Web of Science, and Google Scholar along with gray literature were systematically searched. The search included all relevant studies which were published up to October 2022. Two researchers independently searched all databases and also references of included studies. Results: We found 8211 articles by literature search, and after deleting duplicates, 5594 remained. Fifteen articles remained for meta-analysis. Totally, 31418 patients were evaluated, and the total number of possible/confirmed cases was 124. Studies were published between 2004 and 2020, and the most published studies were from Italy. Five studies provided information regarding controls. The total number of controls was 22394, of whom 22 had CD. Mean age ranged from 35 to 55 years. The pooled prevalence of CD in MS patients was 0 (I 2 = 88.2%, p < 0.001). The pooled odds of CD in subjects with MS are 0.46 (95% CI: 0.19-1.1) (I 2 = 0, p = 0.9). Conclusion: The pooled prevalence of this systematic review showed that CD is not prevalent in MS cases.