scholarly journals Enterovirus D: A Small but Versatile Species

2021 ◽  
Vol 9 (8) ◽  
pp. 1758
Author(s):  
Ines Cordeiro Filipe ◽  
Mariana Soares Guedes ◽  
Evgeny M. Zdobnov ◽  
Caroline Tapparel
Keyword(s):  
Nervous System ◽  
Gastrointestinal Tract ◽  
Infectious Diseases ◽  
Respiratory Tract ◽  
Genome Organization ◽  
Neurological Complications ◽  
Tissue Tropism ◽  
Functional Elements ◽  
Diverse Range ◽  
Causative Agents

Enteroviruses (EVs) from the D species are the causative agents of a diverse range of infectious diseases in spite of comprising only five known members. This small clade has a diverse host range and tissue tropism. It contains types infecting non-human primates and/or humans, and for the latter, they preferentially infect the eye, respiratory tract, gastrointestinal tract, and nervous system. Although several Enterovirus D members, in particular EV-D68, have been associated with neurological complications, including acute myelitis, there is currently no effective treatment or vaccine against any of them. This review highlights the peculiarities of this viral species, focusing on genome organization, functional elements, receptor usage, and pathogenesis.

Relation of diseases of the nervous system to diseases of the upper respiratory tract

1927 ◽  
Vol 23 (4) ◽  
pp. 473-473
Author(s):  
M. F. Tsytovich
Keyword(s):  
Nervous System ◽  
Infectious Diseases ◽  
Respiratory Tract ◽  
Cranial Nerves ◽  
Upper Respiratory Tract ◽  
Upper Respiratory ◽  
Nutritional Disturbances ◽  
Almost All ◽  
The Brain

Noting that diseases of the cranial nervous system may result from 1) infection, 2) nutritional disturbances, and 3) disturbances of normal stimuli (reflexes), the author points out that a huge percentage of infectious diseases of the brain and the meninges have their source in the nose and its appendage cavities. Almost all cranial nerves can also be infected from the nose and its appendages.

COMPARISON OF RAYON AND FLOCKED SWABS FOR COLLECTION AND TRANSPORT OF DEEP THROAT SWABS FOR DETECTION OF BACTERIA CAUSING WHOOPING COUGH BY MULTIPLEX REAL-TIME PCR ASSAY

2019 ◽  
Vol 64 (8) ◽  
pp. 493-496
Author(s):  
A. S. Pimenova ◽  
O. Yu. Borisova ◽  
M. S. Petrova ◽  
N. T. Gadua ◽  
A. B. Borisova ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
Respiratory Tract ◽  
Real Time ◽  
Real Time Pcr ◽  
Biological Material ◽  
Whooping Cough ◽  
Pcr Assay ◽  
Initial Examination ◽  
Causative Agents ◽  
Research Efficiency

The aim of the work was to comparison of rayon and flocked swabs for collection and transport of deep throat swabs for detection of bacteria causing whooping cough by multiplex real-time PCR assay. The study included 87 patients aged from 1 month to 37 years, hospitalized in Infectious Diseases Clinical Hospital No. 1 of the Moscow Department of Healthcare. 68 (78,2 %) people had a diagnosis of whooping cough, the main group of which consisted of children aged 1 to 12 months (median 4 months); 17 (19,5 %) - other diseases of the respiratory tract; 2 (2,3 %) - contact with sick whooping cough. The initial examination of patients was carried out on the 1 - 8th week of the onset of the disease. The material from the patients was taken at one-day interval with commercial rayon swabs and flocked swabs. Identification and differentiation of specific genome fragments of the causative agents of whooping cough in biological material was carried out by real-time PCR using the «AmpliSens® Bordetella multi-FL» reagent kit. The efficiency of PCR-based diagnostics of whooping cough using flocked swabs at the preanalytical stage was 83,8 %, and rayon swabs - 82,3 %. The use of a flocked swabs at the preanalytical stage increased the research efficiency by 1,5 %. Thus, when collecting biological material for PCR-based diagnostics of whooping cough it is possible to use flocked swabs.

ACUTE VIRAL INFECTIONS WITH COMBINED LESIONS OF THE RESPIRATORY AND GASTROINTESTINAL TRACT - A SCOURGE OF OUR TIME

2021 ◽  
Vol 100 (6) ◽  
pp. 8-14
Author(s):  
E.V. Kanner ◽  
◽  
I.D. Kanner ◽  
N.M. Lapkin ◽  
A.V. Gorelov ◽  
...  
Keyword(s):  
Gastrointestinal Tract ◽  
Respiratory Tract ◽  
Viral Infections ◽  
Respiratory Infections ◽  
Antiviral Agents ◽  
Delayed Diagnosis ◽  
Adequate Treatment ◽  
Intestinal Infections ◽  
Causative Agents ◽  
Combined Lesions

Viral infections continue to cause significant morbidity and mortality worldwide. The association of pathogens often changes not only the typical clinical picture of the infection, but also its course, which often becomes the reason for the delayed diagnosis and lack of adequate treatment. The variety and discovery of new respiratory viruses, their variability, the rapid formation of strains resistant to antiviral agents and modifying adaptive immune responses in humans, lead to an increase in the frequency of mixed viral infections, which dictates the need to develop and implement new diagnostic and treatment algorithms. This review is devoted to the problem of acute viral infections with combined lesions of the respiratory tract and gastrointestinal tract (GIT) among the population of children. The etiological structure of causative agents of acute respiratory infections (ARI), acute intestinal infections (AII) and infections with combined lesions of the respiratory tract and GIT in children is presented. The features of the pathogenesis and clinical features of rotavirus, coronavirus infections are considered. An algorithm for making a decision on the appointment of a treatment-and-prophylactic complex for children with AII and ARI is proposed.

scholarly journals SARS-CoV-2 and the Nervous System: From Clinical Features to Molecular Mechanisms

2020 ◽  
Vol 21 (15) ◽  
pp. 5475 ◽  
Author(s):  
Manuela Pennisi ◽  
Giuseppe Lanza ◽  
Luca Falzone ◽  
Francesco Fisicaro ◽  
Raffaele Ferri ◽  
...  
Keyword(s):  
Nervous System ◽  
Molecular Mechanisms ◽  
Neuronal Damage ◽  
Neurological Complications ◽  
Neurological Manifestations ◽  
Wide Range ◽  
Inflammatory State ◽  
Acute Polyneuropathy ◽  
The Central Nervous System ◽  
The Impact

Increasing evidence suggests that Severe Acute Respiratory Syndrome-coronavirus-2 (SARS-CoV-2) can also invade the central nervous system (CNS). However, findings available on its neurological manifestations and their pathogenic mechanisms have not yet been systematically addressed. A literature search on neurological complications reported in patients with COVID-19 until June 2020 produced a total of 23 studies. Overall, these papers report that patients may exhibit a wide range of neurological manifestations, including encephalopathy, encephalitis, seizures, cerebrovascular events, acute polyneuropathy, headache, hypogeusia, and hyposmia, as well as some non-specific symptoms. Whether these features can be an indirect and unspecific consequence of the pulmonary disease or a generalized inflammatory state on the CNS remains to be determined; also, they may rather reflect direct SARS-CoV-2-related neuronal damage. Hematogenous versus transsynaptic propagation, the role of the angiotensin II converting enzyme receptor-2, the spread across the blood-brain barrier, the impact of the hyperimmune response (the so-called “cytokine storm”), and the possibility of virus persistence within some CNS resident cells are still debated. The different levels and severity of neurotropism and neurovirulence in patients with COVID-19 might be explained by a combination of viral and host factors and by their interaction.

scholarly journals Response of Severe EV71-Infected Patients to Hyperimmune Plasma Treatment: A Pilot Study

Pathogens ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 625
Author(s):  
Chonnamet Techasaensiri ◽  
Artit Wongsa ◽  
Thanyawee Puthanakit ◽  
Kulkanya Chokephaibulkit ◽  
Tawee Chotpitayasunondh ◽  
...  
Keyword(s):  
Therapeutic Potential ◽  
Antibody Therapy ◽  
Foot And Mouth Disease ◽  
Neurological Complications ◽  
Neurological Involvement ◽  
Healthy Donors ◽  
Enterovirus A71 ◽  
Number Of Patients ◽  
Causative Agents ◽  
East And Southeast Asia

Hand, foot, and mouth disease (HFMD) is highly prevalent in East and Southeast Asia. It particularly affects children under five years of age. The most common causative agents are coxsackieviruses A6 and A16, and enterovirus A71 (EV71). The clinical presentation is usually mild and self-limited, but, in some cases, severe and fatal complications develop. To date, no specific therapy or worldwide vaccine is available. In general, viral infection invokes both antibody and cell-mediated immune responses. Passive immunity transfer can ameliorate the severe symptoms of diseases such as COVID-19, influenza, MERS, and SARS. Hyperimmune plasma (HIP) from healthy donors with high anti-EV71 neutralizing titer were used to transfuse confirmed EV71-infected children with neurological involvement (n = 6). It resulted in recovery within three days, with no neurological sequelae apparent upon examination 14 days later. Following HIP treatment, plasma chemokines were decreased, whereas anti-inflammatory and pro-inflammatory cytokines gradually increased. Interestingly, IL-6 and G-CSF levels in cerebrospinal fluid declined sharply within three days. These findings indicate that HIP has therapeutic potential for HFMD with neurological complications. However, given the small number of patients who have been treated, a larger cohort study should be undertaken. Successful outcomes would stimulate the development of anti-EV71 monoclonal antibody therapy.

scholarly journals COVID-19 Vaccination: From Interesting Agent to the Patient

Vaccines ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 120
Author(s):  
Anis Daou
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Gastrointestinal Tract ◽  
Circulatory System ◽  
The Novel ◽  
Lead Compound ◽  
Fda Approval ◽  
The World ◽  
The Central Nervous System ◽  
Novel Coronavirus

The vaccination for the novel Coronavirus (COVID-19) is undergoing its final stages of analysis and testing. It is an impressive feat under the circumstances that we are on the verge of a potential breakthrough vaccination. This will help reduce the stress for millions of people around the globe, helping to restore worldwide normalcy. In this review, the analysis looks into how the new branch of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) came into the forefront of the world like a pandemic. This review will break down the details of what COVID-19 is, the viral family it belongs to and its background of how this family of viruses alters bodily functions by attacking vital human respiratory organs, the circulatory system, the central nervous system and the gastrointestinal tract. This review also looks at the process a new drug analogue undergoes, from (i) being a promising lead compound to (ii) being released into the market, from the drug development and discovery stage right through to FDA approval and aftermarket research. This review also addresses viable reasoning as to why the SARS-CoV-2 vaccine may have taken much less time than normal in order for it to be released for use.

scholarly journals Severe Gastrooesophageal Reflux Disease Associated with Foetal Alcohol Syndrome

2012 ◽  
Vol 2012 ◽  
pp. 1-3
Author(s):  
N. K. Sujay ◽  
Matthew Jones ◽  
Emma Whittle ◽  
Helen Murphy ◽  
Marcus K. H. Auth
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Gastrointestinal Tract ◽  
Reflux Disease ◽  
Prenatal Alcohol Exposure ◽  
Case Reports ◽  
Alcohol Exposure ◽  
Central Nervous System Dysfunction ◽  
Foetal Alcohol Syndrome ◽  
Gastrooesophageal Reflux

Prenatal alcohol exposure may have adverse effects on the developing foetus resulting in significant growth restriction, characteristic craniofacial features, and central nervous system dysfunction. The toxic effects of alcohol on the developing brain are well recognised. However, little is known about the effects of alcohol on the developing gastrointestinal tract or their mechanism. There are few case reports showing an association between foetal alcohol syndrome and gastrointestinal neuropathy. We report a rare association between foetal alcohol syndrome and severe gastrooesophageal reflux disease in an infant who ultimately required fundoplication to optimise her growth and nutrition. The child had failed to respond to maximal medical treatment (domperidone and omeprazole), high calorie feeds, PEG feeding, or total parenteral nutrition. The effect of alcohol on the developing foetus is not limited to the central nervous system but also can have varied and devastating effects on the gastrointestinal tract.

scholarly journals Next Step in Gene Delivery: Modern Approaches and Further Perspectives of AAV Tropism Modification

Pharmaceutics ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 750
Author(s):  
Maxim A. Korneyenkov ◽  
Andrey A. Zamyatnin
Keyword(s):  
Gene Therapy ◽  
Genome Organization ◽  
Rational Design ◽  
Structural Data ◽  
Rational Approach ◽  
Tissue Tropism ◽  
Adeno Associated Virus ◽  
Chemical Conjugation ◽  
The Usa ◽  
Therapy Delivery

Today, adeno-associated virus (AAV) is an extremely popular choice for gene therapy delivery. The safety profile and simplicity of the genome organization are the decisive advantages which allow us to claim that AAV is currently among the most promising vectors. Several drugs based on AAV have been approved in the USA and Europe, but AAV serotypes’ unspecific tissue tropism is still a serious limitation. In recent decades, several techniques have been developed to overcome this barrier, such as the rational design, directed evolution and chemical conjugation of targeting molecules with a capsid. Today, all of the abovementioned approaches confer the possibility to produce AAV capsids with tailored tropism, but recent data indicate that a better understanding of AAV biology and the growth of structural data may theoretically constitute a rational approach to most effectively produce highly selective and targeted AAV capsids. However, while we are still far from this goal, other approaches are still in play, despite their drawbacks and limitations.

Widespread infection of the Eastern red-spotted newt (Notophthalmus viridescens) by a new species of Amphibiocystidium, a genus of fungus-like mesomycetozoan parasites not previously reported in North America

Parasitology ◽  
2007 ◽  
Vol 135 (2) ◽  
pp. 203-215 ◽  
Author(s):  
T. R. RAFFEL ◽  
T. BOMMARITO ◽  
D. S. BARRY ◽  
S. M. WITIAK ◽  
L. A. SHACKELTON
Keyword(s):  
New Species ◽  
North America ◽  
Infectious Diseases ◽  
Emerging Infectious Diseases ◽  
Seasonal Distribution ◽  
Notophthalmus Viridescens ◽  
Amphibian Species ◽  
Mortality And Morbidity ◽  
Causative Agents ◽  
A New Species

SUMMARYGiven the worldwide decline of amphibian populations due to emerging infectious diseases, it is imperative that we identify and address the causative agents. Many of the pathogens recently implicated in amphibian mortality and morbidity have been fungal or members of a poorly understood group of fungus-like protists, the mesomycetozoans. One mesomycetozoan, Amphibiocystidium ranae, is known to infect several European amphibian species and was associated with a recent decline of frogs in Italy. Here we present the first report of an Amphibiocystidium sp. in a North American amphibian, the Eastern red-spotted newt (Notophthalmus viridescens), and characterize it as the new species A. viridescens in the order Dermocystida based on morphological, geographical and phylogenetic evidence. We also describe the widespread and seasonal distribution of this parasite in red-spotted newt populations and provide evidence of mortality due to infection.

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