scholarly journals Myasthenia gravis and coronavirus disease 2019: A report from Iran

2021 ◽  
Author(s):  
Masoud Etemadifar ◽  
Mahsa Akafzadeh-Savari ◽  
Mehri Salari ◽  
Amirhossein Akhavan Sigari ◽  
Sara Ebrahimi-Pelarti ◽  
...  
Keyword(s):  
Cohort Study ◽  
Data Analysis ◽  
Myasthenia Gravis ◽  
Respiratory Muscle ◽  
Disease Duration ◽  
Neuromuscular Junctions ◽  
Clinical Status ◽  
Signs And Symptoms ◽  
Muscle Action ◽  
Increased Susceptibility

Background: Coronavirus disease 2019 (COVID-19) is spreading rapidly and has affected millions of people worldwide. Comorbid diseases have complicated the course of infection and increased mortality. Myasthenia gravis (MG) affects the neuromuscular junctions (NMJs) and can compromise respiratory muscle action, leading to worse clinical outcomes in individuals infected with the COVID-19 theoretically. In this study, the aim is to assess the pattern of COVID-19 infection in patients with MG based on several factors. Methods: This was a prospective cohort study following 150 patients with MG over a six-month period. The patients were monitored for the development of signs and symptoms of the COVID-19 infection. Results: Comparison of the patients infected with COVID-19 with MG and those not infected was performed independently based on age, duration since MG diagnosis, status of thymectomy, and current clinical status of MG disease. Data analysis did not reveal increased susceptibility or increased severity of COVID-19 illness based the criteria assessed. Conclusion: COVID-19 related deaths and susceptibility were not related to age, thymectomy status, and disease duration in patients with MG.  

scholarly journals Prevalence and Course of IgA and IgG Antibodies against SARS-CoV-2 in Healthcare Workers during the First Wave of the COVID-19 Outbreak in Germany: Interim Results from an Ongoing Observational Cohort Study

Healthcare ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 498
Author(s):  
Mark Reinwald ◽  
Peter Markus Deckert ◽  
Oliver Ritter ◽  
Henrike Andresen ◽  
Andreas G. Schreyer ◽  
...  
Keyword(s):  
Cohort Study ◽  
Healthcare Workers ◽  
Significant Proportion ◽  
Clinical Signs ◽  
Signs And Symptoms ◽  
Observational Cohort Study ◽  
Igg Antibodies ◽  
University Hospitals ◽  
Observational Cohort

(1) Background: Healthcare workers (HCWs) are prone to intensified exposure to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection in the ongoing pandemic. We prospectively analyzed the prevalence of antibodies against SARS-CoV-2 in HCWs at baseline and follow up with regard to clinical signs and symptoms in two university hospitals in Brandenburg, Germany. (2) Methods: Screening for anti-SARS-CoV-2 IgA and IgG antibodies was offered to HCWs at baseline and follow up two months thereafter in two hospitals of Brandenburg Medical School during the first wave of the COVID-19 pandemic in Germany in an ongoing observational cohort study. Medical history and signs and symptoms were recorded by questionnaires and analyzed. (3) Results: Baseline seroprevalence of anti-SARS-CoV-2 IgA was 11.7% and increased to 15% at follow up, whereas IgG seropositivity was 2.1% at baseline and 2.2% at follow up. The rate of asymptomatic seropositive cases was 39.5%. Symptoms were not associated with general seropositivity for anti-SARS-CoV-2; however, class switch from IgA to IgG was associated with increased symptom burden. (4) Conclusions: The seroprevalence of antibodies against SARS-CoV-2 was low in HCWs but higher compared to population data and increased over time. Screening for antibodies detected a significant proportion of seropositive participants cases without symptoms.

scholarly journals Absence of Association between Previous Mycoplasma pneumoniae Infection and Subsequent Myasthenia Gravis: A Nationwide Population-Based Matched Cohort Study

2021 ◽  
Vol 18 (14) ◽  
pp. 7677
Author(s):  
Kuan Chen ◽  
James Cheng-Chung Wei ◽  
Hei-Tung Yip ◽  
Mei-Chia Chou ◽  
Renin Chang
Keyword(s):  
Cohort Study ◽  
Myasthenia Gravis ◽  
Mycoplasma Pneumoniae ◽  
Pathogenic Bacteria ◽  
Case Reports ◽  
Statistical Significance ◽  
Subsequent Development ◽  
Population Based ◽  
Cox Proportional Hazards ◽  
The Impact

Mycoplasma pneumoniae (M. pneumoniae) is not only one of the most common pathogenic bacteria for respiratory infection but also a trigger for many autoimmune diseases. Its infection process shared many similarities with the pathogenesis of myasthenia gravis (MG) at cellular and cytokine levels. Recent case reports demonstrated patients present with MG after M. pneumoniae infection. However, no epidemiological studies ever looked into the association between the two. Our study aimed to investigate the relationship between M. pneumoniae infection and subsequent development of MG. In this population-based retrospective cohort study, the risk of MG was analyzed in patients who were newly diagnosed with M. pneumoniae infection between 2000 and 2013. A total of 2428 M. pneumoniae patients were included and matched with the non-M. pneumoniae control cohort at a 1:4 ratio by age, sex, and index date. Cox proportional hazards regression analysis was applied to analyze the risk of MG development after adjusting for sex, age, and comorbidities, with hazard ratios and 95% confidence intervals. The incidence rates of MG in the non-M. pneumoniae and M. pneumoniae cohorts were 0.96 and 1.97 per 10,000 person-years, respectively. Another case–control study of patients with MG (n = 515) was conducted to analyze the impact of M. pneumoniae on MG occurrence as a sensitivity analysis. The analysis yielded consistent absence of a link between M. pneumoniae and MG. Although previous studies have reported that M. pneumoniae infection and MG may share associated immunologic pathways, we found no statistical significance between M. pneumoniae infection and subsequent development of MG in this study.

Clinical and laboratory features of neuromyelitis optica with oligoclonal IgG bands

2007 ◽  
Vol 13 (3) ◽  
pp. 332-335 ◽  
Author(s):  
M. Nakamura ◽  
I. Nakashima ◽  
S. Sato ◽  
I. Miyazawa ◽  
K. Fujihara ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Autoimmune Diseases ◽  
Myasthenia Gravis ◽  
Neuromyelitis Optica ◽  
Disease Duration ◽  
Sicca Syndrome ◽  
Common Features ◽  
Laboratory Features ◽  
Oligoclonal Igg ◽  
Oligoclonal Igg Bands

Of 23 neuromyelitis optica (NMO) cases, we found two cases with oligoclonal IgG bands (OBs). Both patients were positive for NMO-IgG. Their common features were long disease duration and co-existing autoimmune diseases (myasthenia gravis and sicca syndrome). Although OBs are mostly negative in NMO, which distinguishes it from multiple sclerosis (MS), they can be positive by long-standing autoimmunity, which may not be directly related to NMO. Multiple Sclerosis 2007; 13: 332-335. http://msj.sagepub.com

Increased risk of osteoporosis in patients with myasthenia gravis: A population-based cohort study

Neurology ◽  
2014 ◽  
Vol 83 (12) ◽  
pp. 1075-1079 ◽  
Author(s):  
J.-H. Yeh ◽  
H.-J. Chen ◽  
Y.-K. Chen ◽  
H.-C. Chiu ◽  
C.-H. Kao
Keyword(s):  
Cohort Study ◽  
Myasthenia Gravis ◽  
Population Based ◽  
Increased Risk

scholarly journals A Cohort Study Risk Factor Analysis for Endemic Disease in Pre-Weaned Dairy Heifer Calves

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 378
Author(s):  
Kate F. Johnson ◽  
Natalie Chancellor ◽  
D. Claire Wathes
Keyword(s):  
Cohort Study ◽  
Disease Duration ◽  
Disease Risk ◽  
Passive Transfer ◽  
Marginal Benefit ◽  
Higher Temperature ◽  
Dairy Heifer ◽  
Milk Solids ◽  
Poor Welfare ◽  
Preweaning Period

Dairy heifer calves experience high levels of contagious disease during their preweaning period, which may result in poor welfare, reduced performance or mortality. We determined risk factors for disease in a cohort study of 492 heifers recruited from 11 commercial UK dairy farms. Every animal received a weekly examination by a veterinarian from birth to nine weeks using the Wisconsin scoring system. Multivariable models were constructed using a hierarchical model with calf nested within farm. Outcome variables for each disease included a binary outcome (yes/no), disease duration and a composite disease score (CDS) including both severity and duration. Diarrhoea, bovine respiratory disease (BRD) and umbilical disease were recorded in 48.2%, 45.9% and 28.7% of calves, respectively. A higher heifer calving intensity in the week of birth reduced the CDS for diarrhoea, with a marginal benefit of improved passive transfer (serum immunoglobulin G (IgG) measured at recruitment). The CDS for BRD was reduced by housing in fixed groups, higher mean temperature in month of birth, increasing milk solids fed, increasing IgG, and higher plasma IGF-1 at recruitment. Conversely, higher calving intensity and higher temperature both increased the CDS for umbilical disease, whereas high IGF-1 was again protective. Although good passive transfer reduced the severity of BRD, it was not significant in models for diarrhoea and umbilical disease, emphasising the need to optimise other aspects of management. Measuring IGF-1 in the first week was a useful additional indicator for disease risk.

scholarly journals Occlusal stabilization appliance: evaluation of its efficacy in the treatment of temporomandibular disorders

2004 ◽  
Vol 12 (3) ◽  
pp. 238-243 ◽  
Author(s):  
Elisa Emi Tanaka ◽  
Emiko Saito Arita ◽  
Bunji Shibayama
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Temporomandibular Disorders ◽  
Imaging Modality ◽  
Clinical Status ◽  
Signs And Symptoms ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Evaluation

Occlusal stabilization appliances or splints are the most widely employed method for treatment of temporomandibular disorders (TMD). Magnetic Resonance Imaging (MRI) is the most indicated imaging modality to evaluate the components of the temporomandibular joint (TMJ). Forty patients with signs and symptoms of temporomandibular disorders were treated with splints for a mean period of 12 months, comprising regular semimonthly follow-ups. After stabilization of the clinical status, occlusal adjustments and MRI evaluation were performed. It was concluded that the success of this kind of treatment are related to the total (70%) or partial improvement (22.5%) of painful symptomatology and to the functional reestablishment of the craniomandibular complex. The MRI allowed evaluation and also the conclusion that the splints provide conditions for the organism to develop means to resist to the temporomandibular disorders by means of elimination of several etiologic factors. Moreover, after treatment the patients are able to cope with disc displacements with larger or smaller tolerance.

scholarly journals Adverse maternal outcomes of pregnancy induced hypertension among pregnant women in Tigray Regional State, Ethiopia: a prospective cohort study

2019 ◽  
Author(s):  
Abadi Kidanemariam Berhe ◽  
Abiodun O. ILESANMI ◽  
Christopher O. AIMAKHU ◽  
Afework Mulugeta
Keyword(s):  
Cohort Study ◽  
Data Analysis ◽  
Prospective Cohort Study ◽  
Medical Records ◽  
Prospective Cohort ◽  
Total Sample ◽  
Maternal Outcomes ◽  
Pregnancy Induced Hypertension ◽  
Regional State ◽  
Induced Hypertension

Abstract Objective The objective of this study was to assess the effect of pregnancy-induced hypertension on adverse maternal outcomes in Tigray Regional State, Ethiopia. A prospective cohort study was conducted on a total sample of 782 pregnant women attending antenatal care in hospitals of Tigray regional state, Ethiopia. Data were collected using interviewer-administered questionnaire and review of their medical records from February 1, 2018, to February 30, 2019. Data analysis was performed using Stata version 14.0.Results The overall adverse maternal outcome was 67.7% among women with pregnancy-induced hypertension and 25.1% among normotensive women. Specifically women with pregnancy-induced hypertension were at higher risk of developing Antepartum hemorrhage (Adjusted RR=1.4(1.1,2.5)), postpartum hemorrhage (RR=2.6(1.3,4.9)), induction of labor (RR=5.9(4.0,8.7)) and delivering by cesarean section (RR=2.1(1.6,2.8)) compared to normotensive women.

scholarly journals Detection of Leishmania infantum amastigotes in neutrophil from peripheral blood in a naturally infected dog

2021 ◽  
Vol 30 (3) ◽  
Author(s):  
Gilsan Aparecida de Oliveira ◽  
Vitória Aline Santos Sarmento ◽  
Ericka Wanessa da Silva Costa ◽  
Rômulo Pessoa-e-Silva ◽  
Rayana Carla Silva de Morais ◽  
...  
Keyword(s):  
Peripheral Blood ◽  
Leishmania Infantum ◽  
Late Phase ◽  
Clinical Status ◽  
Rapid Test ◽  
Signs And Symptoms ◽  
Terminal Phase ◽  
Therapeutic Implications ◽  
Before And After ◽  
Hematological And Biochemical Parameters

Abstract Canine visceral leishmaniasis (CVL) is a zoonotic disease of high lethality caused by Leishmania infantum in the Americas. In the infected dog, the amastigotes are scarce in blood, especially in the late phase of the disease. This study aimed to report a rare case of L. infantum amastigotes found in neutrophils from peripheral blood of a naturally infected dog in terminal phase of CVL, also describing its clinical status before and after treatment with miltefosine 2%. The dog, which presented as polysymptomatic and with classical signs and symptoms of CVL was submitted to the following tests: Dual Path Platform (DPP) rapid test, ELISA and parasitological examination of peripheral blood. Hematological and biochemical parameters were obtained before and after treatment. All diagnostic tests were positive for CVL. The identification of L. infantum amastigotes inside neutrophils from peripheral blood was confirmed through microscopy, and the species was confirmed by molecular analysis. At the end of the treatment, peripheral parasitemia was not detected, and improvements were observed in clinical and laboratorial parameters. Finally, this atypical finding can be used as example to raise discussions about the real immunological role of neutrophils in late phases of CVL and its clinical/therapeutic implications.

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