Prevalence and Antibiograms of Salmonellae in Slaughter Cattle, Slaughter Areas and Effluents in Zaria Abattoir, Nigeria

Mesenteric lymph nodes of slaughter cattle, swabs of slaughter and dressing areas and effluents of Zaria abattoir were cultured for salmonellae. Of a total of 510 samples cultured, 23 (5%) were positive for Salmonella. Five (4%) of 118 bovine lymph nodes contained salmonellae whereas sites swabbed during dressing had a frequency of isolation of 7% (11 of 150) and only 4 (3% of 150 samples) were positive after cleaning of dressing areas. Three (3%) of 92 effluent samples contained salmonellae. Thirteen of the 23 isolates of Salmonella were of different serotypes. The predominant serotypes were S. dublin (4 isolates), S. widemarsh (4 isolates) and S. Handoff (3 isolates). Twenty (87%), 8 (35%) and 8 (35%) isolates were resistant to streptomycin, neomycin and tetracycline respectively, while 6 (26%), 5 (22%) and 3(13%) isolates were not susceptible to gentamicin, ampicillin and chloramphenicol respectively. Overall, 15 resistance patterns were observed. The widespread occurrence of salmonellae in Zaria abattoir coupled with the high incidence of resistance to antimicrobial agents are of public health significance from the viewpoint of food hygiene and therapy for salmonellosis.

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Carrier rate of salmonellas in sheep and goats and its public health significance

Journal of Hygiene ◽

10.1017/s0022172400046192 ◽

1973 ◽

Vol 71 (1) ◽

pp. 43-48 ◽

Cited By ~ 9

Author(s):

S. Kumar ◽

S. P. Saxena ◽

B. K. Gupta

Keyword(s):

Public Health ◽

Lymph Nodes ◽

Carrier Rate ◽

Mesenteric Lymph Nodes ◽

Sheep And Goats ◽

The Public ◽

Mesenteric Lymph ◽

Public Health Significance ◽

Health Significance ◽

Salmonella Serotypes

SUMMARYTo find out the salmonella carrier rate, 1980 samples comprising faeces, mesenteric lymph nodes, liver and spleen were collected from 812 sheep and 683 goats slaughtered for food. In all 72 salmonella strains from 51 animals (25 sheep and 26 goats) were isolated. These represented 22 salmonella serotypes. The public health significance of these findings is discussed.

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Portal Hypertension Promotes Bacterial Translocation in Rats Mono- and Non Mono-Associated with Escherichia Coli C25

HPB Surgery ◽

10.1155/1994/57549 ◽

1994 ◽

Vol 8 (2) ◽

pp. 95-100 ◽

Cited By ~ 2

Author(s):

Jean-Nicolas Vauthey ◽

Petra Duda ◽

Anthony M. Wheatley ◽

Philippe Gertsch

Keyword(s):

Escherichia Coli ◽

Portal Hypertension ◽

Lymph Nodes ◽

Bacterial Translocation ◽

Hypovolemic Shock ◽

Portal Vein Ligation ◽

Mesenteric Lymph Nodes ◽

Septic Complications ◽

Mesenteric Lymph ◽

High Incidence

The basis for the high incidence of infectious complications in portal hypertension (PHT) remains unclear. The hypothesis that PHT induces bacterial translocation (BT) was tested in a rat model with or without mono-association with streptomycin resistant Escherichia coli C25 and with or without hypovolemic shock. PHT was achieved by partial portal vein ligation and three weeks later hypovolemic shock (HS) was induced. Blood, liver, spleen and mesenteric lymph nodes cultures were performed twenty-four hours later.PHT promoted BT to mesenteric lymph nodes in indigenous flora (4/6 [67%]) and mono-associated animals (7/9 [78%]) compared to sham laparotomy and sham shock (SL + SS) animals (0/6 [0%] and 2/9 [22%] respectively) (p = 0.03). The combination of PHT and HS resulted in increased mortality in mono-associated (7/15 [47%]) and non mono-associated animals (8/15 [53%]). No significant translocation was noted in liver and spleen and bacteremia was found only in the PHT + HS mono-associated animals (4/8 [50%]).PHT induces BT to mesenteric lymph nodes and this may account for the high incidence of septic complications associated witti PHT. In this model, the addition of HS to PHT leads to an increased mortality but without uniform translocation of the gut flora beyond mesenteric lymph nodes.

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In situ demonstration of migration of dendritic cells released from rat small intestine to mesenteric lymph nodes

Gastroenterology ◽

10.1016/s0016-5085(01)80905-7 ◽

2001 ◽

Vol 120 (5) ◽

pp. A183-A183

Author(s):

H KOBAYASHI ◽

H NAGATA ◽

S MIURA ◽

T AZUMA ◽

H SUZUKI ◽

...

Keyword(s):

Dendritic Cells ◽

Small Intestine ◽

Lymph Nodes ◽

Rat Small Intestine ◽

Mesenteric Lymph Nodes ◽

Mesenteric Lymph

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Mesenteric lymph nodes in children: what is normal?

Yearbook of Diagnostic Radiology ◽

10.1016/s0098-1672(08)70118-8 ◽

2007 ◽

Vol 2007 ◽

pp. 166-168 ◽

Cited By ~ 1

Author(s):

A.E. Oestreich

Keyword(s):

Lymph Nodes ◽

Mesenteric Lymph Nodes ◽

Mesenteric Lymph

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Clinical Significance of Mesenteric Lymph Nodes Detected on Postoperative CT after a Total Pharyngolaryngectomy and Reconstruction with a Jejunal Free Flap

Journal of the Korean Radiological Society ◽

10.3348/jkrs.2008.58.2.113 ◽

2008 ◽

Vol 58 (2) ◽

pp. 113

Author(s):

Sun Mi Kim ◽

Jeong Hyun Lee ◽

Jin Woo Choi ◽

Byung Se Choi ◽

Kyung Soon Jeong ◽

...

Keyword(s):

Lymph Nodes ◽

Clinical Significance ◽

Free Flap ◽

Mesenteric Lymph Nodes ◽

Mesenteric Lymph ◽

Total Pharyngolaryngectomy

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Reduction of autoimmune regulator Aire mRNA and number of Treg-cells in mesenteric lymph nodes in the offspring of rats with experimental gestational diabetes

Endocrine Abstracts ◽

10.1530/endoabs.41.ep412 ◽

2016 ◽

Author(s):

Tanya Prozorova ◽

Alex Kamyshny

Keyword(s):

Gestational Diabetes ◽

Lymph Nodes ◽

Treg Cells ◽

Mesenteric Lymph Nodes ◽

Autoimmune Regulator ◽

Mesenteric Lymph

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The microbiota is dispensable for the early stages of peripheral regulatory T cell induction within mesenteric lymph nodes

Cellular and Molecular Immunology ◽

10.1038/s41423-021-00647-2 ◽

2021 ◽

Author(s):

Carolin Wiechers ◽

Mangge Zou ◽

Eric Galvez ◽

Michael Beckstette ◽

Maria Ebel ◽

...

Keyword(s):

T Cell ◽

Lymph Nodes ◽

Regulatory T Cell ◽

De Novo ◽

Bacterial Species ◽

Short Chain Fatty Acids ◽

Mesenteric Lymph Nodes ◽

Direct Role ◽

Early Stages ◽

Mesenteric Lymph

AbstractIntestinal Foxp3+ regulatory T cell (Treg) subsets are crucial players in tolerance to microbiota-derived and food-borne antigens, and compelling evidence suggests that the intestinal microbiota modulates their generation, functional specialization, and maintenance. Selected bacterial species and microbiota-derived metabolites, such as short-chain fatty acids (SCFAs), have been reported to promote Treg homeostasis in the intestinal lamina propria. Furthermore, gut-draining mesenteric lymph nodes (mLNs) are particularly efficient sites for the generation of peripherally induced Tregs (pTregs). Despite this knowledge, the direct role of the microbiota and their metabolites in the early stages of pTreg induction within mLNs is not fully elucidated. Here, using an adoptive transfer-based pTreg induction system, we demonstrate that neither transfer of a dysbiotic microbiota nor dietary SCFA supplementation modulated the pTreg induction capacity of mLNs. Even mice housed under germ-free (GF) conditions displayed equivalent pTreg induction within mLNs. Further molecular characterization of these de novo induced pTregs from mLNs by dissection of their transcriptomes and accessible chromatin regions revealed that the microbiota indeed has a limited impact and does not contribute to the initialization of the Treg-specific epigenetic landscape. Overall, our data suggest that the microbiota is dispensable for the early stages of pTreg induction within mLNs.

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