Pathological and molecular studies on Coxsackie virus A‐16 isolated from hand, foot, and mouth disease cases in India: Approach using neonatal mouse model

2019 ◽  
Vol 91 (10) ◽  
pp. 1765-1775
Author(s):  
Sanjaykumar S. Tikute ◽  
Pralhad B. Wangikar ◽  
Varanasi Gopalkrishna
1983 ◽  
Vol 27 (11) ◽  
pp. 929-935 ◽  
Author(s):  
Asao Itagaki ◽  
Junko Ishihara ◽  
Kyo Mochida ◽  
Yoshihiro Ito ◽  
Koichi Saito ◽  
...  

2019 ◽  
Vol 14 (2) ◽  
pp. 84-88
Author(s):  
Suha N. Al-Wakeel ◽  
Khansa A. Al Rubiae ◽  
Suha N. Al-Wakeel ◽  
Basil M. Hanoudi

Background: Hand, foot, and mouth disease is viral disease caused commonly by coxsackie virus A16 virus. It is a mild disease and children usually recover with no specific treatment within 7 to 10 days. Rarely, this illness may be associated with aseptic meningitis were patient may need hospitalization. Objective: To determine significance of clinical features of hand, foot and mouth disease. Methods: A cross sectional study of cases with clinical features of hand, foot and mouth disease visiting the dermatological consultation unit of Al Kindy teaching hospital. Sampling was for Zyona and Edressi Quarter patients over the period of 1st December 2017 to 30th of November 2017. Aim: To determine significance of clinical features of hand, foot and mouth disease Results: The mean age of patients (100 patients) was 29.99 months. Males were 65 (65%) and females were 35 (35%), (P 0.23). Tenderness of skin lesions, Malaise and decreased Appetite were the most frequent symptoms. Winter months illness was common .Cases were diagnosed two days before seeking medical help, while home contact of patients was most common place for infection transmission .Involvement of palms and soles was universal and indifferent (100%). Groin was more commonly affected (67%), (P 0.015). Fever was present in 81%.


2020 ◽  
Vol 67 (6) ◽  
pp. 2507-2520 ◽  
Author(s):  
Victoria Gnazzo ◽  
Valeria Quattrocchi ◽  
Ivana Soria ◽  
Erica Pereyra ◽  
Cecilia Langellotti ◽  
...  

Vaccine ◽  
2016 ◽  
Vol 34 (33) ◽  
pp. 3731-3737 ◽  
Author(s):  
Seo-Yong Lee ◽  
Mi-Kyeong Ko ◽  
Kwang-Nyeong Lee ◽  
Joo-Hyung Choi ◽  
Su-Hwa You ◽  
...  

2018 ◽  
Vol 92 (11) ◽  
Author(s):  
Shao-Hua Wang ◽  
Ao Wang ◽  
Pan-Pan Liu ◽  
Wen-Yan Zhang ◽  
Juan Du ◽  
...  

ABSTRACTCoxsackievirus A6 (CV-A6) is an emerging pathogen associated with hand, foot, and mouth disease (HFMD). Its genetic characterization and pathogenic properties are largely unknown. Here, we report 39 circulating CV-A6 strains isolated in 2013 from HFMD patients in northeast China. Three major clusters of CV-A6 were identified and related to CV-A6, mostly from Shanghai, indicating that domestic CV-A6 strains were responsible for HFMD emerging in northeast China. Four full-length CV-A6 genomes representing each cluster were sequenced and analyzed further. Bootscanning tests indicated that all four CV-A6-Changchun strains were most likely recombinants between the CV-A6 prototype Gdula and prototype CV-A4 or CV-A4-related viruses, while the recombination pattern was related to, yet distinct from, the strains isolated from other regions of China. Furthermore, different CV-A6 strains showed different capabilities of viral replication, release, and pathogenesis in a mouse model. Further analyses indicated that viral protein 2C contributed to the diverse pathogenic abilities of CV-A6 by causing autophagy and inducing cell death. To our knowledge, this study is the first to report lethal and nonlethal strains of CV-A6 associated with HFMD. The 2C protein region may play a key role in the pathogenicity of CV-A6 strains.IMPORTANCEHand, foot, and mouth disease (HFMD) is a major and persistent threat to infants and children. Besides the most common pathogens, such as enterovirus A71 (EV-A71) and coxsackievirus A16 (CV-A16), other enteroviruses are increasingly contributing to HFMD. The present study focused on the recently emerged CV-A6 strain. We found that CV-A6 strains isolated in Changchun City in northeast China were associated with domestic origins. These Changchun viruses were novel recombinants of the CV-A6 prototype Gdula and CV-A4. Our results imply that measures to control CV-A6 transmission are urgently needed. Further analyses revealed differing pathogenicities in strains isolated in a neonatal mouse model. One of the possible causes has been narrowed down to the viral protein 2C, using phylogenetic studies, viral sequences, and direct tests on cultured human cells. Thus, the viral 2C protein is a promising target for antiviral drugs to prevent CV-A6-induced tissue damage.


2017 ◽  
Vol 40 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Probir Kumar Sarkar ◽  
Nital Kumar Sarker ◽  
Md Abu Tayab

Hand, foot, and mouth disease (HFMD) also known as vesicular stomatitis with exanthema, first reported in New Zealand in 1957 is caused by Coxsackie virus A16 (CVA16), human enterovirus 71 (HEV71) and occasionally by other HEV-A serotypes, such as Coxsackie virus A6 and Coxsackie virus A10, are also associated with HFMD and herpangina. While all these viruses can cause mild disease in children, EV71 has been associated with neurological disease and mortality in large outbreaks in the Asia Pacific region over the last decade. It is highly contagious and is spread through direct contact with the mucus, saliva, or feces of an infected person. This is characterized by erythrematous papulo vesicular eruptions over hand, feet, perioral area, knee, buttocks and also intra-orally mostly in children, typically occurs in small epidemics usually during the summer and autumn months. HFMD symptoms are usually mild and resolve on their own in 7 to 10 days. Treatment is symptomatic but good hygiene during and after infection is very important in preventing the spread of the disease. Though only small scale outbreaks have been reported from United States, Europe, Australia Japan and Brazil for the first few decade, since 1997 the disease has conspicuously changed its behavior as noted in different Southeast Asian countries. There was sharp rise in incidence, severity, complications and even fatal outcomes that were almost unseen before that period. There are reports of disease activity in different corners of India since 2004, and the largest outbreak of HFMD occurred in eastern part of India in and around Kolkata in 2007and Bhubaneswar, Odisha in 2009. In recent years there are cases of HFMD have been seen in Bangladesh also. Although of milder degree, continuous progress to affect larger parts of the neighboring may indicate vulnerability of Bangladesh from possible future outbreaks.Bangladesh J Child Health 2016; VOL 40 (2) :115-119


2015 ◽  
Vol 82 (4) ◽  
pp. 235-241
Author(s):  
E. Navarro Moreno ◽  
D. Almagro López ◽  
R. Jaldo Jiménez ◽  
M.C. del Moral Campaña ◽  
G. Árbol Fernández ◽  
...  

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