Porcine epidemic diarrhoea virus (PEDV) infection causes watery diarrhoea, vomiting, anorexia, and weight loss, especially among neonatal piglets, inflicting on them morbidity and mortality potentially reaching 90%–100%. Despite it being known that certain mammalian cell phases are arrested by PEDV, the mechanisms have not been elucidated, and PEDV pathogenesis is poorly understood. This study determined the effect of an epidemic PEDV strain on cell cycle progression. We observed the effect of the PEDV SHpd/2012 strain on an infected Vero cell cycle through flow cytometry and Western blot, investigating the interrelationships of cell-cycle arrest, the DNA damage–signalling pathway caused by PEDV and the phosphorylation levels of the key molecules Chk.2 and H2A.X involved upstream and downstream in this pathway. PEDV induced Vero cell-cycle arrest at the G1/G0 phase. The phosphorylation levels of Chk.2 and H2A.X increased with the prolongation of PEDV infection, and no significant cell-cycle arrest was observed after treatment with ATM or Chk.2 inhibitors. The proliferation of PEDV was also inhibited by treatment with ATM or Chk.2 inhibitors. PEDV-induced cell-cycle arrest is associated with activation of DNA damage–signalling pathways. Our findings elucidate the molecular basis of PEDV replication and provide evidence to support further evaluation of PEDV pathogenesis.

The study was conducted to determine the occurrence and distribution patterns of diseases of goat in Dhaka, Bangladesh during the period of January 2018 to December 2018. Materials and Methods: A total of 452 goats were recorded during the study period. The diseases were diagnosed based on clinical signs, patient owners complain and laboratory findings. The prevalence was measured according to season and age of the goats which were studied. Statistical analysis was done by Chi-square test and P-value was calculated by using SPSS 25 for windows (SPSS, Inc., Chicago, IL).Results: In this study, 381 (84.29%) goats were found to be diseased from 452 visited goats at Central veterinary Hospital (CVH), Dhaka. The highest prevalence was found with worm infestation (31.42%) followed by PPR (13.72%), miscellaneous (ruminal acidosis, disuria, repeat breeding) (12.16%), pneumonia (10.18%), dermatitis (4.20%), enteritis (3.76%), urolithiasis (3.09%), bloat (2.65%), mastitis (1.55%), tetanus (1.11%) and protozoal diseases (0.44%). Rainy season represented the highest (86.11%) prevalence of goat diseases followed by winter season (82.85%) and summer season (82.44%). PPR was significantly (p<0.05) more prevalent in winter season than other two seasons. In this study, Goats had significantly higher (p<0.01) prevalence of worm infestation in the summer season (29.00%) and the rainy season (39.35%) and in all three (0-12 months, 13-24 months and >24 months) age groups with 21.64%, 45.06%, and 32.20% respectively. Prevalence of mastitis was lowest in 0-12 months (0.43%) and 13-24 months (0.62%) age group but the prevalence of tetanus was lowest in above 24 months (1.69%) age group.These findings will help to know about age-wise and season wise variation of different diseases of goat in this area and will help to execute proper preventive measures against those diseases.