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Filename: drivers/Session_files_driver.php
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Filename: Session/Session.php
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File: /var/www/html/index.php
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Function: require_once
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Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
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Function: _error_handler
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Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
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Function: _error_handler
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Message: Trying to access array offset on value of type null
Filename: controllers/Detail.php
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Function: _error_handler
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Filename: controllers/Detail.php
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Function: _error_handler
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Function: require_once
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Filename: models/Detail_model.php
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Function: strpos
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Function: insertAPISummary
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Filename: helpers/my_audit_helper.php
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Function: str_replace
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Function: formatAIDetailSummary
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Function: require_once
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Filename: controllers/Detail.php
Line Number: 256
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Line: 256
Function: _error_handler
File: /var/www/html/index.php
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Message: Trying to access array offset on value of type null
Filename: controllers/Detail.php
Line Number: 256
Backtrace:
File: /var/www/html/application/controllers/Detail.php
Line: 256
Function: _error_handler
File: /var/www/html/index.php
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Message: Trying to access array offset on value of type null
Filename: controllers/Detail.php
Line Number: 256
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File: /var/www/html/application/controllers/Detail.php
Line: 256
Function: _error_handler
File: /var/www/html/index.php
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Message: Undefined array key "usage"
Filename: controllers/Detail.php
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Function: _error_handler
File: /var/www/html/index.php
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Filename: controllers/Detail.php
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Function: _error_handler
File: /var/www/html/index.php
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Message: Undefined array key "usage"
Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
Line: 258
Function: _error_handler
File: /var/www/html/index.php
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Function: require_once
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Message: Trying to access array offset on value of type null
Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
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Function: _error_handler
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Filename: controllers/Detail.php
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Function: _error_handler
File: /var/www/html/index.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Function: _error_handler
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Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
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Function: file_get_contents
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Function: simplexml_load_file_from_url
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Function: pubMedSearch_Global
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Function: pubMedGetRelatedKeyword
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Function: require_once
Toll-like receptor 4 () encodes an innate immune cell pattern-recognition receptor implicated in the recognition of Mycobacterium avium subsp. (MAP), the causative agent of Johne's disease in ruminants. Polymorphisms in have been associated with susceptibility to MAP infection. In this study, a previously developed knockout (KO) bovine mammary epithelial (MAC-T) cell line and wild-type MAC-T cells (WT) were infected with live MAP for 72 h to identify potential immunoregulatory miRNAs, inflammatory genes, and cytokines/chemokines impacted by MAP infection in the presence/absence of . Cytokines/chemokines production in culture supernatants was measured by multiplexing immunoassay. Total RNA was extracted from the remaining MAC-T cells, and quantitative PCR was performed to determine the expression of inflammatory genes and selected bovine miRNAs. Results showed that the levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), CXCL8, CXCL10, CCL4, and CCL3 were significantly induced in WT MAC-T cells during MAP infection. However, KO MAC-T cells had greater secretion of CCL3, IL-6, vascular endothelial growth factor (VEGF-α), and TNF-α and decreased secretion of CXCL10 and CCL2. Moreover, the expression of inflammatory genes was induced in KO cells. The expression of miRNAs (miR133b, miR-92a, and miR-184) was increased in WT MAC-T cells post-MAP infection; however, there was no significant induction of these miRNAs in KO cells, which suggests they are involved in regulating the innate immune response to MAP infection. Target gene function analysis further suggests that miR-92a may be involved in TLR and interleukin signaling and miR-133b and miR-184 may be involved in other signaling pathways. These findings support the involvement of TLR4 in the regulation of innate immune response to MAP. Mycobacterium avium subsp. (MAP) is the causative agent for paratuberculosis or Johne's disease (JD) in ruminants, a disease clinically very similar to Crohn's disease in humans. Polymorphisms in the bovine Toll-like receptor genes (, , and ) have been shown to affect MAP recognition and host innate immune response and have been associated with increased susceptibility of cattle to paratuberculosis. Our results demonstrated that knocking out the gene in bovine MAC-T cells enhanced inflammation in response to MAP. These findings show divergent roles for TLR4 in Escherichia coli lipopolysaccharide and mycobacterial infections, and this may have important consequences for the treatment of these inflammatory diseases and for genetic selection to improve disease resistance. It advances our understanding of the role of TLR4 in the context of MAP infection.
Download full-text PDF |
Source |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10100370 | PMC |
http://dx.doi.org/10.1128/spectrum.04393-22 | DOI Listing |
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