scholarly journals Adaptation of Newcastle Disease Virus (NDV) in Feral Birds and their Potential Role in Interspecies Transmission

2018 ◽  
Vol 12 (1) ◽  
pp. 52-68 ◽  
Author(s):  
Aziz-ul- Rahman ◽  
Momena Habib ◽  
Muhammad Zubair Shabbir
Keyword(s):  
Newcastle Disease ◽  
Potential Role ◽  
Vital Role ◽  
Wild Birds ◽  
Avian Species ◽  
Phylogenomic Analysis ◽  
Susceptible Host ◽  
Domestic Poultry ◽  
Wide Range

Introduction:Newcastle Disease (ND), caused by Avian avulavirus 1 (AAvV 1, avulaviruses), is a notifiable disease throughout the world due to the economic impact on trading restrictions and its embargoes placed in endemic regions. The feral birds including aquatic/migratory birds and other wild birds may act as natural reservoir hosts of ND Viruses (NDVs) and may play a remarkable role in the spread of the virus in environment. In addition, other 19 avulaviruses namely: AAvV 2 to 20, have been potentially recognized from feral avian species.Expalantion:Many previous studies have investigated the field prevailing NDVs to adapt a wide range of susceptible host. Still the available data is not enough to declare the potential role of feral birds in transmission of the virus to poultry and/or other avian birds. In view of the latest evidence related to incidences of AAvVs in susceptible avian species, it is increasingly important to understand the potential of viruses to transmit within the domestic poultry and other avian hosts. Genomic and phylogenomic analysis of several investigations has shown the same (RK/RQRR↓F) motif cleavage site among NDV isolates with same genotypes from domestic poultry and other wild hosts. So, the insight of this, various semi-captive/free-ranging wild avian species could play a vital role in the dissemination of the virus, which is an important consideration to control the disease outbreaks. Insufficient data on AAvV 1 transmission from wild birds to poultry and vice versa is the main constraint to understand about its molecular biology and genomic potential to cause infection in all susceptible hosts.Conclusion:The current review details the pertinent features of several historical and contemporary aspects of NDVs and the vital role of feral birds in its molecular epidemiology and ecology.

scholarly journals Empirical analysis suggests continuous and homogeneous circulation of Newcastle disease virus in a wide range of wild bird species in Africa

2014 ◽  
Vol 143 (6) ◽  
pp. 1292-1303 ◽  
Author(s):  
J. CAPPELLE ◽  
A. CARON ◽  
R. SERVAN De ALMEIDA ◽  
P. GIL ◽  
M. PEDRONO ◽  
...  
Keyword(s):  
Newcastle Disease ◽  
Wild Bird ◽  
Bird Species ◽  
Bird Community ◽  
Wild Birds ◽  
African Countries ◽  
Wide Range ◽  
Term Monitoring

SUMMARYNewcastle disease (ND) is one of the most important poultry diseases worldwide and can lead to annual losses of up to 80% of backyard chickens in Africa. All bird species are considered susceptible to ND virus (NDV) infection but little is known about the role that wild birds play in the epidemiology of the virus. We present a long-term monitoring of 9000 wild birds in four African countries. Overall, 3·06% of the birds were PCR-positive for NDV infection, with prevalence ranging from 0% to 10% depending on the season, the site and the species considered. Our study shows that ND is circulating continuously and homogeneously in a large range of wild bird species. Several genotypes of NDV circulate concurrently in different species and are phylogenetically closely related to strains circulating in local domestic poultry, suggesting that wild birds may play several roles in the epidemiology of different NDV strains in Africa. We recommend that any strategic plan aiming at controlling ND in Africa should take into account the potential role of the local wild bird community in the transmission of the disease.

A Review on the Anti-Viral Activity of Houttuynia cordata: A Possible Herb for the Management and Treatment of COVID-19

2021 ◽  
Vol 4 (2) ◽  
pp. 3-10
Author(s):  
Emdormi Rymbai ◽  
Keyword(s):  
Vital Role ◽  
Viral Agent ◽  
Houttuynia Cordata ◽  
Traditional Medicines ◽  
Virulent Newcastle Disease Virus ◽  
Wide Range ◽  
Anti Cancer ◽  
The Family ◽  
Anti Oxidant

Plants are an important source of natural products and they play a vital role in the field of medicinal chemistry and pharmaceutical science. Traditional medicines have been practiced and used for thousands of years, mostly in Asian countries, where plants are the main sources of medicine. Houttuynia cordata, a herb that belongs to the family Saururaceae, has a wide range of pharmacological activities and is used traditionally in conditions like anisolobis sores, heatstroke, lung carbuncles, malaria, scrotal abscess, tonsillitis, salammoniac poison and has also been widely accepted to possess anti-cancer, anti-oxidant, anti-hypertension, anti-inflammatory, anti-mutagenic, antibacterial, anti-viral and anti-purulent activity. Moreover, it is one of the herbs that was recognized during pandemic outbreaks, such as Severe Acute Respiratory Syndrome Coronavirus (SARS CoV) in China, virulent Newcastle Disease Virus (VNDV) in Java (Indonesia) and Newcastle (England). In this review, we briefly discuss the role of H. cordata as an anti-viral agent and the possibility of developing a dosage form against Coronavirus disease-19 (COVID-19).

scholarly journals Autophagy is activated in the ovarian tissue of polycystic ovary syndrome

Reproduction ◽  
2018 ◽  
Vol 155 (1) ◽  
pp. 85-92 ◽  
Author(s):  
Da Li ◽  
Yue You ◽  
Fang-Fang Bi ◽  
Tie-Ning Zhang ◽  
Jiao Jiao ◽  
...  
Keyword(s):  
Polycystic Ovary Syndrome ◽  
Potential Role ◽  
Polycystic Ovary ◽  
Ovarian Tissue ◽  
Ovary Syndrome ◽  
Cellular Processes ◽  
Transmission Electron ◽  
Wide Range ◽  
Response To Stress

The importance of autophagy in polycystic ovary syndrome (PCOS)-related metabolic disorders is increasingly being recognized, but few studies have investigated the role of autophagy in PCOS. Here, transmission electron microscopy demonstrated that autophagy was enhanced in the ovarian tissue from both humans and rats with PCOS. Consistent with this, ovarian granulosa cells from PCOS rats showed increases in the autophagy marker protein light chain 3B (LC3B), whereas levels of the autophagy substrate SQSTM1/p62 were decreased. In addition, the ratio of LC3-II/LC3-I was markedly elevated in human PCOS ovarian tissue compared with normal ovarian tissue. Real-time PCR arrays indicated that 7 and 34 autophagy-related genes were down- and up-regulated in human PCOS , Signal-Net, and regression analysis suggested that there are a wide range of interactions among these 41 genes, and a potential network based on EGFR, ERBB2, FOXO1, MAPK1, NFKB1, IGF1, TP53 and MAPK9 may be responsible for autophagy activation in PCOS. Systematic functional analysis of 41 differential autophagy-related genes indicated that these genes are highly involved in specific cellular processes such as response to stress and stimulus, and are linked to four significant pathways, including the insulin, ERBB, mTOR signaling pathways and protein processing in the endoplasmic reticulum. This study provides evidence for a potential role of autophagy disorders in PCOS in which autophagy may be an important molecular event in the pathogenesis of PCOS.

scholarly journals Potential reverse spillover of infectious bursal disease virus at the interface of commercial poultry and wild birds

Virus Genes ◽  
2020 ◽  
Vol 56 (6) ◽  
pp. 705-711
Author(s):  
Rania F. El Naggar ◽  
Mohammed A. Rohaim ◽  
Muhammad Munir
Keyword(s):  
Disease Virus ◽  
Infectious Bursal Disease Virus ◽  
Potential Role ◽  
Wild Birds ◽  
Infectious Bursal Disease ◽  
Free Living ◽  
Bean Goose ◽  
Bursal Disease ◽  
Commercial Poultry

AbstractRecently, multiple spillover events between domesticated poultry and wild birds have been reported for several avian viruses. This phenomenon highlights the importance of the livestock-wildlife interface in the possible emergence of novel viruses. The aim of the current study was to investigate the potential spillover and epidemiological links of infectious bursal disease virus (IBDV) between wild birds and domestic poultry. To this end, twenty-eight cloacal swabs were collected from four species of free-living Egyptian wild birds (i.e. mallard duck, bean goose, white-fronted goose and black-billed magpie). Genetic and phylogenetic analysis of three positive isolates revealed that the IBDV/USC-1/2019 strain clustered with previously reported very virulent IBDV (vvIBDV) Egyptian isolates. Interestingly, two other wild bird-origin isolates (i.e. IBDV/USC-2/2019 and IBDV/USC-3/2019) grouped with a vaccine strain that is being used in commercial poultry. In conclusion, our results revealed the molecular detection of vaccine and vvIBDV-like strains in Egyptian wild birds and highlighted the potential role of wild birds in IBDV epidemiology in disease-endemic regions.

Users’ Attitudes towards Institutional Repository in Jadavpur University: A Critical Study

2012 ◽  
Vol 1 (2) ◽  
pp. 45-52
Author(s):  
Sambhu Nath Halder ◽  
Suvra Chandra
Keyword(s):  
Potential Role ◽  
Point Of View ◽  
Academic Institution ◽  
Critical Study ◽  
Institutional Repository ◽  
Digital Environment ◽  
Institutional Repositories ◽  
Wide Range ◽  
User Friendly

This paper examines the user-aware of institutional repositories in Jadavpur University. The main objective of this study is to investigate the awareness of Institutional Repository (IR) in an academic institution and different aspects associated with it, such as, software, sources for user’s awareness, motivators for developing a repository, demand of the users in changing paradigms from traditional to digital environment, etc. In the present days, libraries are also adopting the latest technologies to provide best possible services in user friendly form. This paper also describes the potential role of institutional repositories and its easiness and simplicity of use are attracting more patrons in the use of institutional repositories. Only a wide range of user awareness is needed for proper usage of its beauty. Entirely this paper is based on a critical study, which measures the utility of institutional repositories in users’ point of view.

Aortic Valve Sinus Vorticity Dynamics and the Potential Role of Coronary Flow

2013 ◽  
Author(s):  
Brandon L. Moore ◽  
Lakshmi P. Dasi
Keyword(s):  
Aortic Valve ◽  
Coronary Flow ◽  
Potential Role ◽  
The United States ◽  
Calcific Aortic Valve Disease ◽  
Wide Range ◽  
Vorticity Dynamics ◽  
Spatio Temporal ◽  
Fluid Wall Shear Stress

Calcific aortic valve disease affects a wide range of the population in the United States. Each year there are approximately 50,000 valve replacements due to this disease [(Freeman & Otto, 2005)]. While it is unclear what the exact causes of CAVD are, it does appear to be correlated to local hemodynamic conditions particularly related to the complex spatio-temporal nature of fluid wall shear stress dynamics that the aortic side of the leaflets experience.

scholarly journals Exosomes: A Novel Therapeutic Paradigm for Treatment of Depression

2020 ◽  
Vol 21 ◽  
Author(s):  
Shvetank Bhatt ◽  
Jovita Kanoujia ◽  
Arghya Kusum Dhar ◽  
Surendar Arumugam ◽  
Amanda K. A. Silva ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Small Rna ◽  
Potential Role ◽  
Vital Role ◽  
Physiological Processes ◽  
Treatment Of Depression ◽  
As Stress ◽  
Novel Therapeutic

Abstract: Extracellular vesicles (EVs) of endocytic origin are known as exosomes. These vesicles are released by cells and are accessible in biofluids, such as saliva, urine, and plasma. These vesicles are made up of small RNA, DNA, proteins and play a vital role in many physiological processes. In central nervous system (CNS), they participate in various physiological processes such as stress of nerve cells, communication between the cells, synaptic plasticity and neurogenesis. The role of exosomes in depression needs to be explored further. It is known that exosomes can cross blood brain barrier (BBB), which is made up of glial cells astrocytes. One of the advantages of these vescicles is that they are able to transfer macromolecules like DNA, protein, mRNAs and miRNAs to recipient cells. This review focuses on the potential role of exosomes in de-pression and their utilization as atreatmentoption or diagnostic tool of depression.

scholarly journals THE ROLE OF WILD BIRDS IN PRESERVATION AND PREVALENCE OF AVIAN PARAMYXOVIRUS SEROTYPE 1 (NEWCASTLE DISEASE VIRUSES) IN SIBERIA AND THE FAR EAST, RUSSIA

2016 ◽  
Vol 11 (2) ◽  
pp. 50-58
Author(s):  
A. V. Glushchenko ◽  
K. S. Yurchenko ◽  
A. K. Yurlov ◽  
Yu. G. Yushkov ◽  
M. Yu. Shchelkanov ◽  
...  
Keyword(s):  
Newcastle Disease ◽  
Far East ◽  
Wild Birds ◽  
Avian Paramyxovirus ◽  
The Far East ◽  
Serotype 1 ◽  
East Russia

scholarly journals Host-microbiome coevolution promotes cooperation in a rock-paper-scissor dynamic

2019 ◽  
Author(s):  
Ohad Lewin-Epstein ◽  
Lilach Hadany
Keyword(s):  
Computational Modeling ◽  
Potential Role ◽  
Evolution Of Cooperation ◽  
Host Behavior ◽  
Wide Range ◽  
Forms Of Life ◽  
New Perspective ◽  
Almost All ◽  
And Behavior

AbstractCooperation is a fundamental behavior observed in all forms of life. The evolution of cooperation has been widely studied, but almost all theories focused on the cooperating individual and its genes. We suggest a different approach, taking into account the microbes carried by the interacting individuals. Accumulating evidence reveal that microbes can affect their host wellbeing and behavior, yet hosts can evolve mechanisms to resist the manipulations of their microbes. We thus propose that coevolution of microbes with their hosts may favor microbes that induce their host to cooperate. Using computational modeling, we show that microbe-induced cooperation can evolve and be maintained in a wide range of conditions, including when facing hosts’ resistance to the microbial effect. We find that host-microbe coevolution leads the population to a rock-paper-scissors dynamic, that enables maintenance of cooperation in a polymorphic state. This theory may help explain occurrences of cooperation in a wide variety of organisms, including in cases that are difficult to explain by current theories. In addition, this study provides a new perspective on the coevolution of hosts and their microbiome, emphasizing the potential role of microbes in shaping their host behavior.

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