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International Journal of Surgery Case... Jun 2024Primary breast sarcoma (PBS), excluding phyllodes tumors, is an extremely rare and heterogeneous group of cancers, accounting for <1 % of all breast cancers. PBS is...
INTRODUCTION
Primary breast sarcoma (PBS), excluding phyllodes tumors, is an extremely rare and heterogeneous group of cancers, accounting for <1 % of all breast cancers. PBS is typically diagnosed in the fifth or sixth decades of life. There are no pathognomonic clinical or radiological features. Diagnosis is generally established through a microbiopsy. For young women, the diagnosis can be confused with a benign pathology.
CLINICAL PRESENTATION
Our patient was 27 years old, with no family or personal history of breast cancer, which was initially brought to the emergency department with a breast abscess. The clinical diagnosis of abscessed mastitis was made. The patient underwent tissue excision with evacuation of blood clots and necrotic tissue. Histopathological examination revealed a primary breast sarcoma. An MRI showed locally advanced retro-glandular tumor. An abdominal and pelvic CT scan performed showed no evidence of secondary locations. Therefore, the patient was referred for neoadjuvant radiotherapy and chemotherapy. After the third course of chemotherapy, the patient died following cardiogenic shock.
DISCUSSION
The PBS in younger women is extremely rare. The etiopathogenesis remains undetermined. The clinical and radiological characteristics of PBS mimic breast adenocarcinoma. Mastectomy is the treatment of choice but in the case of locally advanced tumor, the use of neoadjuvant chemotherapy can be indicated. PBS presents a significantly poorer prognosis.
CONCLUSION
Breast sarcomas are rare malignant tumors for which treatment protocols are not well-established. Further research efforts are needed to improve the understanding and treatment of PBS.
PubMed: 38749389
DOI: 10.1016/j.ijscr.2024.109587 -
Schweizer Archiv Fur Tierheilkunde May 2024Feeding raw meat is becoming increasingly common among dog owners. This feeding practice can pose a hygienic risk and can lead to health risks for dogs and their owners....
Feeding raw meat is becoming increasingly common among dog owners. This feeding practice can pose a hygienic risk and can lead to health risks for dogs and their owners. Hygienically sound food rations, that are balanced in terms of all nutrients and energy, must be feed to breeding dogs. The aim of this study was to record the influence of raw feeding on the occurrence of mastitis, metritis and the survival of puppies. An online questionnaire was sent to kennel club registered dog breeders in Germany and Switzerland. A total of 531 litters were recorded and evaluated. Mastitis and/or metritis were present in 9,2 % and 2,8 % (n = 49 and n = 15, respectively) of the breeding bitches. 29 % (n = 154) of the breeders reported loss of puppies in the litter. The most common cause were stillbirths (n = 105 litters with 187 stillborn puppies), and/or early mortality (n = 50 litters with 73 puppies that died in the first 48 hours). The occurrence of puppy losses in the litter and/or a higher proportion of puppy losses in the litter was favored by increased body weight of the bitch in larger dog breeds, existing previous illnesses, previously reported gestation or postpartum problems, increasing length of the parturition phase and/or a cesarean section. A higher total number of surviving puppies was associated with increased weight and anamnestic reported health of the bitch and the use of milk powder instead of other milk substitutes. A relationship between raw feeding and the occurrence of mastitis, metritis, the total number of surviving puppies and/or the occurrence or proportion of pup losses in the litter and was not found in this study. However very few breeders in this cohort fed their bitches raw, which in turn was due to the random selection of breeders. Many years of breeding experience and the increasing parity of the bitch had a clearly positive influence on the health of the bitch.
Topics: Dogs; Animals; Female; Dog Diseases; Mastitis; Surveys and Questionnaires; Endometritis; Switzerland; Germany; Pregnancy; Stillbirth; Animal Feed
PubMed: 38747035
DOI: 10.17236/sat00423 -
BMC Veterinary Research May 2024In dairy cattle, mastitis causes high financial losses and impairs animal well-being. Genetic selection is used to breed cows with reduced mastitis susceptibility....
Cows with diverging haplotypes show differences in differential milk cell count, milk parameters and vaginal temperature after S. aureus challenge but not after E. coli challenge.
BACKGROUND
In dairy cattle, mastitis causes high financial losses and impairs animal well-being. Genetic selection is used to breed cows with reduced mastitis susceptibility. Techniques such as milk cell flow cytometry may improve early mastitis diagnosis. In a highly standardized in vivo infection model, 36 half-sib cows were selected for divergent paternal Bos taurus chromosome 18 haplotypes (Q vs. q) and challenged with Escherichia coli for 24 h or Staphylococcus aureus for 96 h, after which the samples were analyzed at 12 h intervals. Vaginal temperature (VT) was recorded every three minutes. The objective of this study was to compare the differential milk cell count (DMCC), milk parameters (fat %, protein %, lactose %, pH) and VT between favorable (Q) and unfavorable (q) haplotype cows using Bayesian models to evaluate their potential as improved early indicators of differential susceptibility to mastitis.
RESULTS
After S. aureus challenge, compared to the Q half-sibship cows, the milk of the q cows exhibited higher PMN levels according to the DMCC (24 h, p < 0.001), a higher SCC (24 h, p < 0.01 and 36 h, p < 0.05), large cells (24 h, p < 0.05) and more dead (36 h, p < 0.001) and live cells (24 h, p < 0.01). The protein % was greater in Q milk than in q milk at 0 h (p = 0.025). In the S. aureus group, Q cows had a greater protein % (60 h, p = 0.048) and fat % (84 h, p = 0.022) than q cows. Initially, the greater VT of S. aureus-challenged q cows (0 and 12-24 h, p < 0.05) reversed to a lower VT in q cows than in Q cows (48-60 h, p < 0.05). Additionally, the following findings emphasized the validity of the model: in the S. aureus group all DMCC subpopulations (24 h-96 h, p < 0.001) and in the E. coli group nearly all DMCC subpopulations (12 h-24 h, p < 0.001) were higher in challenged quarters than in unchallenged quarters. The lactose % was lower in the milk samples of E. coli-challenged quarters than in those of S. aureus-challenged quarters (24 h, p < 0.001). Between 12 and 18 h, the VT was greater in cows challenged with E. coli than in those challenged with S. aureus (3-h interval approach, p < 0.001).
CONCLUSION
This in vivo infection model confirmed specific differences between Q and q cows with respect to the DMCC, milk component analysis results and VT results after S. aureus inoculation but not after E. coli challenge. However, compared with conventional milk cell analysis monitoring, e.g., the global SCC, the DMCC analysis did not provide refined phenotyping of the pathogen response.
Topics: Animals; Cattle; Milk; Female; Mastitis, Bovine; Staphylococcus aureus; Escherichia coli Infections; Escherichia coli; Staphylococcal Infections; Haplotypes; Cell Count; Body Temperature; Vagina
PubMed: 38745199
DOI: 10.1186/s12917-024-03996-y -
Ecotoxicology and Environmental Safety Jun 2024Long non-coding RNAs (LncRNAs) are dysregulated in a variety of human diseases and are highly involved in the development and progression of tumors. Studies on lncRNAs...
Long non-coding RNAs (LncRNAs) are dysregulated in a variety of human diseases and are highly involved in the development and progression of tumors. Studies on lncRNAs associated with cow mastitis have been lagging behind compared to humans or model animals, therefore, the aim of this study was to explore the mechanism of LncRNAs (CMR) involved in autoprotection against S. aureus mastitis in Bovine Mammary Epithelial Cells (BMECs). First, qRT-PCR was used to examine the relative expression of CMR in a S. aureus mastitis model of BMECs. Then, cell proliferation and apoptosis were detected by EdU and apoptosis assay. Finally, the targeting relationship between miRNAs and mRNA/LncRNAs was determined by dual luciferase reporter gene, qRT-PCR and western blotting techniques. The results showed that CMR was upregulated in the S. aureus mastitis model of BMECs and promoted the expression of inflammatory factors, and SiRNA-mediated CMR inhibited the proliferation of mammary epithelial cells and induced apoptosis. Mechanistically, CMR acts as a competitive endogenous RNA (ceRNA) sponge miR-877, leading to upregulation of FOXM1, a target of miR-877. Importantly, either miR-877 overexpression or FOXM1 inhibition abrogated CMR knockdown-induced apoptosis promoting cell proliferation and reducing inflammatory factor expression levels. In summary, CMR is involved in the regulation of autoprotection against S. aureus mastitis through the miR-877/FOXM1 axis in BMECs and induces immune responses in mammary tissues and cells of dairy cows, providing an important reference for subsequent prevention and control of cow mastitis and the development of targeted drugs.
Topics: Animals; Cattle; RNA, Long Noncoding; MicroRNAs; Female; Mastitis, Bovine; Staphylococcus aureus; Apoptosis; Forkhead Box Protein M1; Cell Proliferation; Epithelial Cells; Staphylococcal Infections
PubMed: 38744067
DOI: 10.1016/j.ecoenv.2024.116456 -
MBio Jun 2024has been attributed to playing a major role in a cascade of events that affect the prevalence and severity of uterine disease in cattle. The objectives of this project...
has been attributed to playing a major role in a cascade of events that affect the prevalence and severity of uterine disease in cattle. The objectives of this project were to (i) define the association between the prevalence of specific antimicrobial resistance and virulence factor genes in with the clinical status related to uterine infection, (ii) identify the genetic relationship between isolates from cows with diarrhea, with mastitis, and with and without metritis, and (iii) determine the association between the phenotypic and genotypic antimicrobial resistance identified on the isolated from postpartum cattle. Bacterial isolates ( = 148) were obtained from a larger cross-sectional study. Cows were categorized into one of three clinical groups before enrollment: metritis, cows with purulent discharge, and control cows. For genomic comparison, public genomes ( = 130) from cows with diarrhea, mastitis, and metritis were included in a genome-wide association study, to evaluate differences between the drug classes or the virulence factor category among clinical groups. A distinct genotype associated with metritis could not be identified. Instead, a high genetic diversity among the isolates from uterine sources was present. A virulence factor previously associated with metritis (H) using PCR was not associated with metritis. There was moderate accuracy for whole-genome sequencing to predict phenotypic resistance, which varied depending on the antimicrobial tested. Findings from this study contradict the traditional pathotype classification and the unique intrauterine genotype associated with metritis in dairy cows.IMPORTANCEMetritis is a common infectious disease in dairy cattle and the second most common reason for treating a cow with antimicrobials. The pathophysiology of the disease is complex and is not completely understood. Specific endometrial pathogenic have been reported to be adapted to the endometrium and sometimes lead to uterine disease. Unfortunately, the specific genomic details of the endometrial-adapted isolates have not been investigated using enough genomes to represent the genomic diversity of this organism to identify specific virulence genes that are consistently associated with disease development and severity. Results from this study provide key microbial ecological advances by elucidating and challenging accepted concepts for the role of Intrauterine in metritis in dairy cattle, especially contradicting the existence of a unique intrauterine genotype associated with metritis in dairy cows, which was not found in our study.
Topics: Cattle; Animals; Female; Virulence Factors; Escherichia coli Infections; Escherichia coli; Genotype; Cattle Diseases; Postpartum Period; Cross-Sectional Studies; Whole Genome Sequencing; Uterine Diseases; Genome, Bacterial; Uterus; Anti-Bacterial Agents; Genome-Wide Association Study; Drug Resistance, Bacterial
PubMed: 38742889
DOI: 10.1128/mbio.01027-24 -
BMC Veterinary Research May 2024Bovine mastitis is a widespread disease affecting dairy cattle worldwide and it generates substantial losses for dairy farmers. Mastitis may be caused by bacteria, fungi...
BACKGROUND
Bovine mastitis is a widespread disease affecting dairy cattle worldwide and it generates substantial losses for dairy farmers. Mastitis may be caused by bacteria, fungi or algae. The most common species isolated from infected milk are, among others, Streptococcus spp., Escherichia coli, Staphylococcus aureus and non-aureus staphylococci and mammaliicocci. The aim of this paper is to determine the frequency of occurrence of bacterial species in milk samples from cows with mastitis from three regions of Poland: the north-east, the south-west and the south. To this end 203 milk samples taken from cows with a clinical form (CM) of mastitis (n = 100) and healthy animals (n = 103) were examined, which included culture on an appropriate medium followed by molecular detection of E. coli, S. aureus, Streptococcus agalactiae and Streptococcus uberis, as one of the most common species isolated from mastitis milk.
RESULTS
The results obtained indicated that S. uberis was the most commonly cultivated CM species (38%, n = 38), followed by S. aureus (22%, n = 22), E. coli (21%, n = 21) and S. agalactiae (18%, n = 18). Similar frequencies in molecular methods were obtained for S. uberis (35.1%) and S. aureus (28.0%). The variation of sensitivity of both methods may be responsible for the differences in the E. coli (41.0%, p = 0.002) and S. agalactiae (5.0%, p = 0.004) detection rates. Significant differences in composition of species between three regions of Poland were noted for E. coli incidence (p < 0.001), in both the culture and molecular methods, but data obtained by the PCR method indicated that this species was the least common in north-eastern Poland, while the culture method showed that in north-eastern Poland E. coli was the most common species. Significant differences for the molecular method were also observed for S. uberis (p < 0.001) and S. aureus (p < 0.001). Both species were most common in southern and south-western Poland.
CONCLUSIONS
The results obtained confirm the need to introduce rapid molecular tests for veterinary diagnostics, as well as providing important epidemiological data, to the best of our knowledge data on Polish cows in selected areas of Poland is lacking.
Topics: Animals; Cattle; Mastitis, Bovine; Poland; Female; Milk; Streptococcus; Escherichia coli; Staphylococcus aureus; Streptococcus agalactiae; Bacteria
PubMed: 38734661
DOI: 10.1186/s12917-023-03869-w -
International Journal of Molecular... Apr 2024The serious drawback underlying the biological annotation of whole-genome sequence data is the p >> n problem, which means that the number of polymorphic variants (p) is...
The serious drawback underlying the biological annotation of whole-genome sequence data is the p >> n problem, which means that the number of polymorphic variants (p) is much larger than the number of available phenotypic records (n). We propose a way to circumvent the problem by combining a LASSO logistic regression with deep learning to classify cows as susceptible or resistant to mastitis, based on single nucleotide polymorphism (SNP) genotypes. Among several architectures, the one with 204,642 SNPs was selected as the best. This architecture was composed of two layers with, respectively, 7 and 46 units per layer implementing respective drop-out rates of 0.210 and 0.358. The classification of the test data resulted in AUC = 0.750, accuracy = 0.650, sensitivity = 0.600, and specificity = 0.700. Significant SNPs were selected based on the SHapley Additive exPlanation (SHAP). As a final result, one GO term related to the biological process and thirteen GO terms related to molecular function were significantly enriched in the gene set that corresponded to the significant SNPs. Our findings revealed that the optimal approach can correctly predict susceptibility or resistance status for approximately 65% of cows. Genes marked by the most significant SNPs are related to the immune response and protein synthesis.
Topics: Cattle; Mastitis, Bovine; Animals; Polymorphism, Single Nucleotide; Deep Learning; Female; Whole Genome Sequencing; Genetic Predisposition to Disease; Genotype
PubMed: 38731932
DOI: 10.3390/ijms25094715 -
Animals : An Open Access Journal From... May 2024From 2016 to 2020, the "PraeRi" study, conducted by three German veterinary universities, was aimed at enhancing animal health and welfare in dairy farms. With 765 dairy...
From 2016 to 2020, the "PraeRi" study, conducted by three German veterinary universities, was aimed at enhancing animal health and welfare in dairy farms. With 765 dairy farms visited and 101,307 animals examined, this study provided a basis for improving animal health and welfare. The study population comprised three different regions representing a broad variety of characteristics. To ensure representative estimates, a sample size of 250 farms was determined for each region, employing a stratified sampling plan based on farm size. According to the information provided by the farmers, the most commonly occurring disease in their herds was mastitis without general disorder (14.2% to 16.3% of the herd-depending on the region). For most disorders, prevalence data were lowest for the region South compared with the two remaining regions. Multivariable regression analyses were performed to identify risk factors for various target variables, and the results were communicated through individual reports and benchmarking flyers to participating farmers. The authors encountered challenges in management and communication due to the project's size in terms of personnel, data, and farms examined. Harmonizing data management and hypothesis testing across all involved parties added complexity.
PubMed: 38731389
DOI: 10.3390/ani14091385 -
Animals : An Open Access Journal From... Apr 2024The type II Na/Pi co-transporter (NaPi2b), encoded by the solute carrier (SLC) transporter 34A2 (SLC34A2), is responsible for calcium (Ca) and phosphorus (P)...
The type II Na/Pi co-transporter (NaPi2b), encoded by the solute carrier (SLC) transporter 34A2 (SLC34A2), is responsible for calcium (Ca) and phosphorus (P) homeostasis. Unbalanced Ca/P metabolism induces mastitis in dairy cows. However, the specific role of SLC34A2 in regulating this imbalance in Holstein cows with clinical mastitis (CM) remains unclear. The aim of this study was to investigate the role of SLC34A2 and identify differentially expressed proteins (DEPs) that interact with SLC34A2 and are associated with Ca/P metabolism in dairy cows with CM. Immunohistochemical and immunofluorescence staining results showed that SLC34A2 was located primarily in the mammary epithelial cells of the mammary alveoli in both the control (healthy cows, Con/C) and CM groups. Compared to the Con/C group, the relative expression of the gene and protein were significantly downregulated in the CM group. We identified 12 important DEPs included in 11 GO terms and two pathways interacting with SLC34A2 using data-independent acquisition proteomics. The PPI (protein-and-protein interaction) network results suggested that these DEPs were associated with ion metabolism and homeostasis, especially SLC34A2. These results demonstrate that SLC34A2 downregulation is negatively correlated with the occurrence and development of CM in Holstein cows, providing a basis for exploring the function and regulatory mechanism of SLC34A2 in Ca/P metabolism and homeostasis in Holstein cows with CM.
PubMed: 38731279
DOI: 10.3390/ani14091275