Immune Cell Differentiation in Mammary Gland Tissues and Milk of Cows Chronically Infected with Staphylococcus aureus

2003 ◽  
Vol 50 (1) ◽  
pp. 45-52 ◽  
Author(s):  
G. Leitner ◽  
R. Eligulashvily ◽  
O. Krifucks ◽  
S. Perl ◽  
A. Saran
1988 ◽  
Vol 55 (4) ◽  
pp. 513-519 ◽  
Author(s):  
Susan J. Mayer ◽  
Avril E. Waterman ◽  
Peter M. Keen ◽  
Neil Craven ◽  
F. John Bourne

SummaryThe partial pressure of O2in milk from normal cows and from cows with mastitis was measured and the concentrations of O2calculated. Oxygen levels of milk from normal cows were similar to those in venous plasma, but inflammation of the mammary gland led to a dramatic drop in O2concentration to < 10% of control values. Intracellular survival ofStaphylococcus aureusstrain M60 in bovine neutrophils was greater under anaerobic than aerobic conditions. The implications of low O2concentrations in milk from infected mammary glands for the bactericidal activity of bovine neutrophils is discussed.


PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0170668 ◽  
Author(s):  
Jully Gogoi-Tiwari ◽  
Vincent Williams ◽  
Charlene Babra Waryah ◽  
Paul Costantino ◽  
Hani Al-Salami ◽  
...  

Science ◽  
2013 ◽  
Vol 342 (6160) ◽  
pp. 863-866 ◽  
Author(s):  
V. Thammavongsa ◽  
D. M. Missiakas ◽  
O. Schneewind

2018 ◽  
Vol 74 (1) ◽  
pp. 6054-2018
Author(s):  
MAREK SZCZUBIAŁ ◽  
ROMAN DABROWSKI ◽  
WOJCIECH ŁOPUSZYŃSKI ◽  
MARIOLA BOCHNIARZ ◽  
MAGDALENA KRAWCZYK ◽  
...  

The aim of this study was the investigation of the circulating concentration of IGF-1 in female dogs with spontaneous mammary tumours. The study was performed on 34 female dogs undergoing surgery due to spontaneously occurring mammary gland tumours (24 malignant and 10 benign) and 10 clinically healthy fe-male dogs. The serum concentrations of IGF-1 were determined by specific ELISA Kit assay. The mean con-centrations of IGF-1 were significantly higher (P < 0.05) both in dogs with malignant (173.35 ± 120.45 ng/ml) and benign (130.58 ± 59.0 ng/ml) mammary tumours than in healthy controls (117.45±71.0 ng/ml). In the group of female dogs with mammary carcinomas, the mean concentration of IGF-1 gradually increased from 132.85 ± 65.64 ng/ml in dogs with grade 1 tumours to 317.74 ± 119.25 ng/ml in those with grade 3 tumours, and significant differences (P < 0.05) were found among dogs with various grade tumours. These findings suggest that circulating IGF-1 may play an important role in the pathogenesis of canine mammary tumour. Moreover, high IGF-1 levels may reflect tumour cell differentiation into a more aggressive phenotype. .


2020 ◽  
Author(s):  
Vladimir Gim nez Rivera ◽  
Adam Peres ◽  
Gaurav Isola ◽  
Denis Sasseville ◽  
Robert Bissonnette ◽  
...  

2019 ◽  
Vol 6 (1) ◽  
pp. 21-32
Author(s):  
Jeevan R. Dash ◽  
Tapas K. Sar ◽  
Rinku Buragohain ◽  
Indranil Samanta ◽  
Rahul Nanotkar

Background: Mammary gland tissue (left half) revealed the presence of excess proliferation of fibrous tissue with disorganization of alveolar structures and the right half showed extensive fibrous tissue proliferation of mammary gland following intramammary inoculation of 2000 c.f.u. of Staphylococcus aureus. However, oral dosing of Bauhinia variegata L. bark powder at 6 gm/kg for 7 days and 3 gm/kg for another 7 days exhibited reduction of fibrous tissue in chronic mastitis. Objective: The fibrolytic effect of one week oral dosing of Bauhinia purpurea L. bark powder was studied in chronic mastitis with induced fibrosis as Bauhinia variegate L. is rarely available in plain land. Methods: Chronic mastitis with fibrosis was induced by intramammary inoculation of coagulase positive Staphylococcus aureus in group III and IV goats. Group I and III goats were injected with a single dose of ceftriaxone at 20 mg/kg intravenously, whereas group II and IV goats were orally administered Bauhinia purpurea L. bark powder at 6 g/kg for 7 days with a single dose of ceftriaxone at 20 mg/kg intravenously. Results: The t1/2β of ceftriaxone with Bauhinia purpurea L. stem bark powder in chronic mastitis increased significantly. Ceftizoxime was detected in plasma from 1 h to 48 h post dosing (pd) in group III and from 1 h to 96 h pd in group IV, respectively. Conclusion: Bark powder of Bauhinia purpurea L. at 6g/kg orally once daily increased the bioavailability of ceftriaxone and or ceftizoxime in milk due to its fibrolytic effect which was not reported earlier. Therefore, the Bauhinia purpurea L. bark powder having fibrolytic effect has the potential to reduce development of cancer.


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