List of Articles Mycobacterium avium subspecies paratuberculosis

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  1 - Investigating serumic levels of antibodies against Mycobacterium avium supspecies paratuberculosis using the ELISA method in Holstein dairy cattle
  yavar heydarzadeh Asiabi Behboud Jafari Ali hassanpour
  Paratuberculosis (Johne’s disease) is achronic bacterial infection of ruminants causing body wasting due to severe and protracted diarrhea. The aim of the present study was to investigate the rate of infection to Johne’s disease in cattle of Moghan agro-busi More

  Paratuberculosis (Johne’s disease) is achronic bacterial infection of ruminants causing body wasting due to severe and protracted diarrhea. The aim of the present study was to investigate the rate of infection to Johne’s disease in cattle of Moghan agro-business and animal husbandry complex by detecting antibody titers against Mycobacterium avium subspecies paratuberculosis (MAP) using the absorptive ELISA method. For this purpose, blood samples were collected from 738 randomly selected milking cattle of Moghan agro-business and animal husbandry complex and their sera were assessed by ELISA method. The results indicated that 58 cattle had antibody titers against MAP with S/P percentage over 60% (infection rate of 7.86%) of which 25 cattle were positive (with S/P percentage over 70%) and 33 were suspicious (with S/P percentage between 60-70%). Because Johne’s disease is manifested as a subclinical disease and infected cattle seem to be apparently healthy, bacteria are shed through faeces and body secretions causing infection of the rest of the herd. Thus performing periodic herd screening tests and testing recently introduced animals alongside other preventive measures is strictly advised. Manuscript profile
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  2 - Seroprevalence of Mycobacterium avium subspecies paratuberculosis infection in goats of Khuzestan province
  saeid Bagheri MAHDI POURMAHDI BORUJENI Mohammad rahim Haji Hajikolaei Masoud Ghorbanpoor
  Paratuberculosis or Johne's disease is chronic infectious granulomatous enteritis of ruminants, which has a worldwide occurrence. It is caused by Mycobacterium avium subspecies paratuberculosis and the most common symptoms of disease in goats are cachexia, anorexia and More

  Paratuberculosis or Johne's disease is chronic infectious granulomatous enteritis of ruminants, which has a worldwide occurrence. It is caused by Mycobacterium avium subspecies paratuberculosis and the most common symptoms of disease in goats are cachexia, anorexia and severe disability. The aim of this study was to survey seroprevalence of Mycobacterium avium paratuberculosis in goats of Khuzestan province and its correlation with host and environmental determinants. In this study sera samples were collected randomly from 368 goats in Ahvaz, Hendijan, Izeh, Shushtar, Dezful and Susangerd cities and were tested by ELISA. Apparent and real seroprevalence of Mycobacterium avium subspecies paratuberculosis were 7.07% (95% CI: 4.47-9.67 percent) and 13.8% (95% CI: 10.3-17.3 percent), respectively. This study showed that infection increased with age and odds of infection between the age, based on year and disease is 1.08 (95% CI: 0.86-1.35) (p>0.05). Relative frequency of positive samples in females was more than males and the odds of infection in female goats was 1.19 (95% CI: 0.4-3.59) times the males (p>0.05). The odds of infection in goats with history of diarrhea was 4.38 (95% CI: 1.92-9.96) times more than goats without this history (p<0.001). The seroprevalence in Ahvaz, Dezful, Izeh, Shushtar, Hendijan and Susangerd was 8.06% 5%, 4.92%, 13.33%, 2.67% and 5% respectively (p>0.05). This study confirms that Mycobacterium avium subspecies paratuberculosis exists in goats of Khuzestan province and preventive and control measures should be considered by health authorities. Conflict of interest: None declared. Manuscript profile
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  3 - Phylogenetic analysis of Mycobacterium avium subspecies paratuberculosis isolated from dairy cattle of Tehran province
  behboud jafari mahmoud jamshidian farhad mousakhani
     Paratuberculosis or Johne's disease is a severe chronic and progressive intestinal inflammation in ruminants caused by Mycobacterium avium subspecies paratuberculosis which can lead to great economic losses to the livestock industry especially dairy idustry More

     Paratuberculosis or Johne's disease is a severe chronic and progressive intestinal inflammation in ruminants caused by Mycobacterium avium subspecies paratuberculosis which can lead to great economic losses to the livestock industry especially dairy idustry. On the other hand, it is known as a zoonosis in the pathogenesis of Crohn's disease in humans. This study was conducted with the purpose of phylogenetic analysis of Mycobacterium avium par tuberculosis isolated from dairies in Tehran. In this study, DNA extraction was performed on 100 stool samples from Johne's disease infected cattle. Then using specific primers of gene IS900, Nested PCR reactions was carried out and from the positive samples isolated, 14 cases were randomly selected and sent to Macro gene Company in Korea for sequencing. In this study, 28 samples from a total of 100 stool samples were positive for MAP. After sequencing, more than 99% of the positive samples were similar with sequences in gene bank. The Results showed that Nested PCR technique can be a valuable test for detection of Mycobacterium avium paratuberculosis in animals. The sequencing results indicated that strains KJ629114 and AE016958 had the highest similarity and CP000325 had the highest difference in GyrA gene. In regard to GyrB gene, the highest similarity belongs to strains AE016985, CP005928 and CP009614 and the highest difference was related to GU143884. Manuscript profile