The Ecology of Mycobacteria: Impact on Animal's and Human's Health

Kazda, J.; Pavlík, I.; Falkinham, Joseph O.; Hruška, K.

doi:10.1007/978-1-4020-9413-2

Cited by 85 publications

(131 citation statements)

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“…Sterile, underground peat for commercial use is mined from a depth of more than 2 m and stored on stockpiles in open spaces for a few months; therefore, it may become contaminated from a variety of sources during subsequent storage. These include: rainwater, dust, soil and the faeces of infected domestic and free living birds or mammals (Kazda et al 2009;Pate et al 2009;Shitaye et al 2009;Kriz et al 2010a,b;Skoric et al 2010;Kaevska et al 2011). However, we have not determined the exact sources of contamination in these cases.…”

Section: Resultsmentioning

confidence: 99%

Mycobacteria in peat used as a supplement for pigs: failure of different decontamination methods to eliminate the risk

Mátlová¹,

Kaevska²,

Morávková³

et al. 2012

Vet. Med.

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Peat used as a feed supplement for piglets has favourable dietetic qualities; however, its frequent contamination with potentially pathogenic mycobacteria (PPM) has been shown to pose a potential risk to piglet health. The purpose of the present study was to investigate possible ways of devitalising mycobacteria. Examination of 118 samples from various types of commercially available peat (natural peat, packed peat for horticulture and specially processed peat intended for piglet feeding) showed that PPM were present in 84 (71.1%) samples. Mycobacterium avium subsp. hominissuis (82.1%) was the most frequent mycobacterial isolate. In addition, from a natural locality where peat is mined and stored in large piles for up to four months, mycobacteria were detected in peat samples collected from the surface and from up to 25 cm in depth. We used different physical and chemical procedures for peat decontamination (peracetic acid, formaldehyde, steam, and microwave radiation) in attempting to devitalise the mycobacteria in peat. We found that PPM can be reliably devitalised with 1.0% peracetic acid, or 5.0% formaldehyde. However, under field conditions, when using bulk amounts of peat, none of the above procedures were shown to be suitable. Based on these results, the feeding of peat to piglets is confirmed as a high-risk practice.

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Section: Resultsmentioning

confidence: 99%

Mycobacteria in peat used as a supplement for pigs: failure of different decontamination methods to eliminate the risk

Mátlová¹,

Kaevska²,

Morávková³

et al. 2012

Vet. Med.

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“…Kazda et al (2009) recently published a book documenting the ubiquity of mycobacteria and their significant impact on the health of animals and humans alike. Moreover, the present knowledge on the function of bacterial triggers in chronic human diseases (Carbone et al, 2005), raises the question of whether the components of mycobacterial cell walls pose a risk as food pathogens or food borne immunoactive factors involved in autoimmune diseases and Crohn's disease.…”

Section: Resultsmentioning

confidence: 99%

Analysis of publications on paratuberculosis from 1995 to 2009 with emphasis on the period from 2005 to 2009

Kaevska¹,

Hruška²

2010

Vet. Med. - Czech

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ABSTRACT:The importance of paratuberculosis, an infectious bowel disease of ruminants, and Crohn's disease, a type of inflammatory bowel disease in humans with suspected links with Mycobacterium avium subsp. paratuberculosis, is evident from the steadily increasing number of publications on these topics. Data from the Web of Science databases were analysed by authors, institutions, countries and funding agencies, involved in research. A summary of the descriptive data for the most frequently cited publications are presented here.

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“…At present, the environment and infected animals remain the main reservoir for NTM including MAA (Kazda et al, 2009;Krizova et al, 2010)). Although various sources of infection in the environment exist (i.e.…”

Section: Discussionmentioning

confidence: 99%

“…Infected birds are capable of shedding MAA to the surrounding environment (Shitaye et al, 2008a;Kazda et al, 2009), which poses a danger of the spread of infection through fowl as well as other animals and humans. Immunocompromised individuals are especially susceptible to MAA infections (Falkinham, 1996;Griffith et al, 2007).…”

mentioning

confidence: 99%

Examination of Mycobacterium avium subsp. avium distribution in naturally infected hens by culture and triplex quantitative real time PCR

Kaevska¹,

Slaná²,

Králík³

et al. 2010

Vet. Med. - Czech

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Mycobacterium avium subsp. avium (MAA) is the etiologic agent of avian tuberculosis, a chronic contagious disease described in a wide variety of domestic and wild bird species. The aims of this study were to assess the advantages of triplex quantitative real time PCR (qPCR) in comparison with culture testing for distribution of MAA in the organs of hens displaying varying degrees of clinical symptoms of the disease. From one small flock of ten hens and one cock with a history of weight loss, 98 tissue samples were examined in total. Pathological lesions were observed in six hens from which two were clinically ill. A total of 12 samples were positive by culture and 16 were positive by IS901 and IS1245 qPCR, confirming MAA infection. In conclusion, qPCR was a faster and more reliable alternative method in comparison with conventional culture analysis. Due to the detection of MAA in the muscle tissue of one hen, consumption of under cooked meat originating from infected fowl could pose a threat to immunosuppressed individuals.

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The Ecology of Mycobacteria: Impact on Animal's and Human's Health

Cited by 85 publications

References 0 publications

Mycobacteria in peat used as a supplement for pigs: failure of different decontamination methods to eliminate the risk

Mycobacteria in peat used as a supplement for pigs: failure of different decontamination methods to eliminate the risk

Analysis of publications on paratuberculosis from 1995 to 2009 with emphasis on the period from 2005 to 2009

Examination of Mycobacterium avium subsp. avium distribution in naturally infected hens by culture and triplex quantitative real time PCR

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