scholarly journals Comparative characteristics of human betaherpesviruses 6A and 6B. A modern view on the problem

2021 ◽  
Vol 13 (3) ◽  
pp. 5-18
Author(s):  
M. I. Popkova ◽  
O. V. Utkin ◽  
D. A. Bryzgalova

This review is devoted to the comparative characteristics of human herpesvirus 6A (HHV6A) and human herpesvirus 6B (HHV6B), taking into account their exogenous and endogenous (inherited chromosomally integrated) forms. The analysis of the literature data on the main interspecies differences and intraspecies features of these viruses in molecular-genetic, biological, epidemiological and clinical aspects has been consistently carried out. Modern views about HHV6A and HHV6B, including their unique inherited chromosomal-integrated form, are the basis for organizing a system of epidemiological surveillance of infections caused by these viruses, as well as developing standardized methodological approaches to differential diagnosis, treatment and specific prevention of a wide range of virus-associated diseases. The development of this direction requires a greater evidence base and intensification of joint efforts of the scientific and medical communities.

2020 ◽  
pp. 1-6
Author(s):  
Vijayendra Waykar ◽  
Katherine Wourms ◽  
Michael Tang ◽  
Verghese Joseph

SUMMARY Delusional infestation (delusional parasitosis) is a relatively rare condition but it has been of interest to a wide range of professionals, including entomologists, zoologists and dermatologists, as patients predominantly seek help from specialties other than psychiatrists. The illness requires a multidisciplinary approach and a strong bond of trust between the treating clinician and the patient to ensure the best possible outcome. This article discusses how clinicians in all specialties should approach patients presenting with the disorder and outlines differential diagnosis and associated laboratory tests. It considers the evidence base for treatment and the success of psychodermatology clinics that provide a ‘neutral setting’ for consultation to address the problem of patients’ non-engagement. Such clinics are few, and there is a need to develop disease-specific pathways in primary care and hospital settings to improve prognosis.


1996 ◽  
Vol 16 (02) ◽  
pp. 114-138 ◽  
Author(s):  
R. E. Scharf

SummarySpecific membrane glycoproteins (GP) expressed by the megakaryocyte-platelet system, including GPIa-lla, GPIb-V-IX, GPIIb-llla, and GPIV are involved in mediat-ing platelet adhesion to the subendothelial matrix. Among these glycoproteins, GPIIb-llla plays a pivotal role since platelet aggregation is exclusively mediated by this receptor and its interaction with soluble macromolecular proteins. Inherited defects of the GPIIb-llla or GPIb-V-IX receptor complexes are associated with bleeding disorders, known as Glanzmann's thrombasthenia, Bernard-Soulier syndrome, or platelet-type von Willebrand's disease, respectively. Using immuno-chemical and molecular biology techniques, rapid advances in our understanding of the molecular genetic basis of these disorders have been made during the last few years. Moreover, analyses of patients with congenital platelet membrane glycoprotein abnormalities have provided valuable insights into molecular mechanisms that are required for structural and functional integrity, normal biosynthesis of the glycoprotein complexes and coordinated membrane expression of their constituents. The present article reviews the current state of knowledge of the major membrane glycoproteins in health and disease. The spectrum of clinical bleeding manifestations and established diagnostic criteria for each of these dis-orders are summarized. In particular, the variety of molecular defects that have been identified so far and their genetic basis will be discussed.


The recycling and reuse of materials and objects were extensive in the past, but have rarely been embedded into models of the economy; even more rarely has any attempt been made to assess the scale of these practices. Recent developments, including the use of large datasets, computational modelling, and high-resolution analytical chemistry, are increasingly offering the means to reconstruct recycling and reuse, and even to approach the thorny matter of quantification. Growing scholarly interest in the topic has also led to an increasing recognition of these practices from those employing more traditional methodological approaches, which are sometimes coupled with innovative archaeological theory. Thanks to these efforts, it has been possible for the first time in this volume to draw together archaeological case studies on the recycling and reuse of a wide range of materials, from papyri and textiles, to amphorae, metals and glass, building materials and statuary. Recycling and reuse occur at a range of site types, and often in contexts which cross-cut material categories, or move from one object category to another. The volume focuses principally on the Roman Imperial and late antique world, over a broad geographical span ranging from Britain to North Africa and the East Mediterranean. Last, but not least, the volume is unique in focusing upon these activities as a part of the status quo, and not just as a response to crisis.


2021 ◽  
Vol 10 (9) ◽  
pp. 1880
Author(s):  
Paola Galozzi ◽  
Sara Bindoli ◽  
Andrea Doria ◽  
Francesca Oliviero ◽  
Paolo Sfriso

In the panorama of inflammatory arthritis, gout is the most common and studied disease. It is known that hyperuricemia and monosodium urate (MSU) crystal-induced inflammation provoke crystal deposits in joints. However, since hyperuricemia alone is not sufficient to develop gout, molecular-genetic contributions are necessary to better clinically frame the disease. Herein, we review the autoinflammatory features of gout, from clinical challenges and differential diagnosis, to the autoinflammatory mechanisms, providing also emerging therapeutic options available for targeting the main inflammatory pathways involved in gout pathogenesis. This has important implication as treating the autoinflammatory aspects and not only the dysmetabolic side of gout may provide an effective and safer alternative for patients even in the prevention of possible gouty attacks.


2018 ◽  
Vol 5 (2) ◽  
pp. 79-84
Author(s):  
Konstantinos Kopsidas ◽  
Hardeep Mudhar ◽  
Karen Sisley ◽  
David W. Hammond ◽  
L. Worthington ◽  
...  

Author(s):  
LN Golitsyna ◽  
VV Zverev ◽  
NV Ponomareva ◽  
NI Romanenkova ◽  
Thao Thanh Thi Nguyen ◽  
...  

Background: Coxsackievirus A10 (CV-A10) is currently one of the most common etiological agents of enterovirus infection (EVI). Over the past decade, severe and fatal cases of CV-A10 infection have become more frequent while clinical manifestations of the disease are similar to those of Enterovirus A71 infection. The objective of our study was to characterize circulation of Coxsackievirus A10 in the Russian Federation in 2008–2019 and to study the phylogenetic relationships of strains isolated in Russia and Vietnam. Materials and methods: In 2008–2019, 220 CV-A10 strains were isolated from patients with various clinical manifestations of EVI and from sewage water samples taken in the Russian Federation and then studied using molecular genetic methods. In addition to that, we analyzed 26 CV-A10 strains isolated from patients with hand, foot, and mouth disease (HFMD) and acute flaccid paralysis in South Vietnam in 2018–2019. Results: We established a two-year periodicity of CV-A10 active circulation in Russia. In the structure of clinical forms of CV-A10 infection, herpetic angina prevailed (30.8 %), followed by minor illness (25.25 %), respiratory diseases (15.66 %), exanthema (14.65 %), gastrointestinal disorders (8.08 %), and asymptomatic infections (2.02 %). Symptoms of CNS damage (meningitis, meningoencephalitis) were observed in 3.53 % of cases. Most CV-A10 strains from Vietnam were isolated from patients with CNS affection of varying degrees of severity. During the study period, CV-A10 strains of genotypes C, E, and F3 circulated in the territory of the Russian Federation whereas the strains from South Vietnam were represented by genotypes F3 and F1. The studied strains showed a genetic relationship with those of CV-A10 circulating in different countries. Vietnamese and some Russian strains of the F3 genotype were genetically close to the strains isolated from severe cases. Conclusions: Molecular monitoring of CV-A10 circulation is an important component of the global epidemiological surveillance of EVI.


2021 ◽  
Vol 19 (1) ◽  
pp. 78-81
Author(s):  
E. N. Voronina ◽  
◽  
D. V. Pechkurov ◽  
A. A. Tyazheva ◽  
E. V. Kozarez ◽  
...  

The urgency of the problem of recurrent vomiting in children is due not only to the high prevalence of this syndrome, but also to a wide range of reasons for its development. The article presents a clinical case of observation of a child with recurrent vomiting syndrome. It shows the dynamics of the disease, the importance of identifying such «anxiety symptom» as the nutritional status violation. In this case, the cause of vomiting of central genesis was not immediately taken into account, although differential diagnosis presupposes an integrated approach, and doctors' oncological alertness should be constantly preserved even in pediatrics.


2018 ◽  
Vol 13 (4) ◽  
pp. 96-99
Author(s):  
O.A. ORLOVA ◽  
M.N. ZAMYATIN ◽  
N.A. UMZUNOVA ◽  
N.N. LASHENKOVA ◽  
V.G. AKIMKIN ◽  
...  

Author(s):  
Charles H. Klein

Since Francis Crick and James D. Watson’s discovery of DNA in 1953, researchers, policymakers, and the general public have sought to understand the ways in which genetics shapes human lives. A milestone in these efforts was the completion of the Human Genome Project’s (HGP) sequencing of Homo sapiens’ nearly three million base pairs in 2003. Yet, despite the excitement surrounding the HGP and the discovery of the structural genetic underpinnings of several debilitating diseases, the vast majority of human health outcomes have not been linked to a single gene. Moreover, even when genes have been associated with particular diseases (e.g., breast and colon cancer), it is not well understood why certain genetically predisposed individuals become ill and others do not. Nor has the HGP’s map provided sufficient information to understand the actual functioning of the human genetic code, including the role of noncoding DNA (“junk DNA”) in regulating molecular genetic processes. In response, a growing number of scientists have shifted their attention from structural genetics to epigenetics, the study of how genes express themselves in particular situations and environments. Anthropologists play roles in these applications of epigenetics to real-world settings. Their new theoretical frameworks unsettle the nature-versus-nurture binary and support biocultural anthropological research demonstrating how race becomes biology and embodies social inequalities and health disparities across generations. Ethnographically grounded case studies further highlight the diverse epigenetic logics held by healthcare providers, researchers, and patient communities and how these translations of scientific knowledge shape medical practice and basic research. The growing field of environmental epigenetics also offers a wide range of options for students and practitioners interested in applying the anthropological toolkit in epigenetics-related work.


2018 ◽  
Vol 38 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Wenhong Chen ◽  
Anabel Quan-Haase

The hype around big data does not seem to abate nor do the scandals. Privacy breaches in the collection, use, and sharing of big data have affected all the major tech players, be it Facebook, Google, Apple, or Uber, and go beyond the corporate world including governments, municipalities, and educational and health institutions. What has come to light is that enabled by the rapid growth of social media and mobile apps, various stakeholders collect and use large amounts of data, disregarding the ethics and politics. As big data touch on many realms of daily life and have profound impacts in the social world, the scrutiny around big data practice becomes increasingly relevant. This special issue investigates the ethics and politics of big data using a wide range of theoretical and methodological approaches. Together, the articles provide new understandings of the many dimensions of big data ethics and politics, showing it is important to understand and increase awareness of the biases and limitations inherent in big data analysis and practices.


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