Cases Of Acute Mastitis Research Articles

Antimicrobial Effects of Conditioned Medium From Amniotic Progenitor Cells in vitro and in vivo: Toward Tissue Regenerative Therapies for Bovine Mastitis.

There is increasing evidence to suggest that, in addition to their regenerative effect, mesenchymal stromal cells (MSCs), and their secretome have an anti-inflammatory and antimicrobial role in the innate immune response in conditions such as sepsis. However, there is no published information on the effect of MSCs in bovine mastitis. Mastitis often results in extensive tissue damage due to multi-microorganism co-infection. This study investigated the ability of amniotic-derived conditioned medium (CM), in vitro and in vivo, to counteract microbial action and restore healthy tissue capable of milk production. Following determination of a dose–response curve, 10,000 colony-forming units (CFU) of Staphylococcus aureus (S. aureus) were inoculated into bovine mammary epithelial cell culture with and without 10% CM (supplemented either at the time of bacteria inoculation or after 4 h). Acridine orange staining was used to assess cell viability/apoptosis. Additionally, an in vivo study was performed using 48 dairy cows with acute and chronic mastitis, treated with CM (treated group) or antibiotics (control group). In vitro results showed that CM can attenuate bacterial growth, as evaluated by the number of CFU. After 24 h of culture with S. aureus, 89.67% of mammary epithelial cells treated with CM were still alive, whereas all cells cultured without CM were dead. Rates of epithelial cell survival (60.67%) were similar when CM was added 4 h after bacteria inoculation. There was no difference in somatic cell count between cases of acute mastitis in the CM-treated or control group in the in vivo study. However, relapses in chronic mastitis were less common in the group receiving CM. Our results show that CM is able to mitigate bacterial growth in vitro and may be particularly useful in the treatment of chronic mastitis, aiding restoration of milk production in cows that would otherwise be removed from the production cycle.

Whole-Genome Draft Sequences of Six Commensal Fecal and Six Mastitis-Associated Escherichia coli Strains of Bovine Origin.

The bovine gastrointestinal tract is a natural reservoir for commensal and pathogenic Escherichia coli strains with the ability to cause mastitis. Here, we report the whole-genome sequences of six E. coli isolates from acute mastitis cases and six E. coli isolates from the feces of udder-healthy cows.

A clinicopathologic study of various breast lesions with cytohistological correlation

Context: Most of the females suffer from breast diseases during their life at some time or the other. Confirmation of breast diseases by clinical examination and pathological confirmation by fine needle aspiration cytology (FNAC) and histopathologic examination has been found to be an important part of diagnostic workup in breast diseases. Aims: To establish a clinicopathologic correlation in patients suffering from breast diseases. Settings and Design: We conducted a prospective study from December 2008 to August 2010. One hundred and twenty-one cases were enrolled using simple random sampling methods. Materials and Methods: Data including age, complaints, and clinical examination was collected from patients presenting for FNAC with breast complaints. Results: A total of 128 cases were studied which included 101 benign cases, 21 malignant cases, and 6 inadequate cases. The final 122 cases included 3 (2.5%) cases of acute mastitis, 2 cases (1.6%) of tubercular mastitis, 44 cases (36.1%) of fibroadenoma, 42 cases (34.4%) of benign breast disease with non-specific descriptive diagnosis, 2 cases (1.6%) of fibrocystic disease, 3 cases (2.5%) of galactocele, 1 (0.9%) case of lactational adenoma, 2 cases (1.6%) of cellular fibroadenoma, and 2 cases (1.6%) of phyllodes tumor. Apart from this, there were 21 cases (17.21%) of ductal carcinoma. Majority of benign cases were between 30 and 39 years of age (43.6%). Majority of malignant cases fell between 50 and 59 years of age (47.6%). Majority (61.5%) of lumps (>3 cm) were malignant, whereas 94.8% of lumps (<3 cm) were benign. Left breast was commonly involved (49.18%) than the right breast (44.26%). Superolateral quadrant (63.1%) was the most commonly involved quadrant. Histology was available for 35 benign cases (34.65%) and out of total malignant cases (21), histology was available for 14 cases (66.66%). No discrepancy was noted.

Mannheimia Species Associated with Ovine Mastitis

Mannheimia glucosida, M. haemolytica, and M. ruminalis were isolated from cases of acute mastitis in ewes. M. glucosida was found to be a common cause of clinical mastitis in sheep. Selected phenotypic tests in addition to genotyping were needed to definitively identify Mannheimia species causing ovine mastitis.