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28 Results Found

  • Review
  • Open Access
17 Citations
13,081 Views
20 Pages

Emerging Biomarkers and Targeted Therapies in Feline Mammary Carcinoma

  • Andreia Gameiro,
  • Ana Catarina Urbano and
  • Fernando Ferreira

11 August 2021

Feline mammary carcinoma (FMC) is a common aggressive malignancy with a low survival rate that lacks viable therapeutic options beyond mastectomy. Recently, increasing efforts have been made to understand the molecular mechanisms underlying FMC devel...

  • Article
  • Open Access
18 Citations
3,616 Views
12 Pages

The Landscape of Tumor-Infiltrating Immune Cells in Feline Mammary Carcinoma: Pathological and Clinical Implications

  • Catarina Nascimento,
  • Andreia Gameiro,
  • Jorge Correia,
  • João Ferreira and
  • Fernando Ferreira

18 August 2022

Feline mammary carcinoma (FMC) shares key molecular and clinicopathological features with human breast cancer. We have herein studied the inflammatory infiltrate of FMC in order to uncover potential therapeutic targets and prognostic markers. To this...

  • Article
  • Open Access
10 Citations
4,003 Views
16 Pages

VISTA Is a Diagnostic Biomarker and Immunotherapy Target of Aggressive Feline Mammary Carcinoma Subtypes

  • Andreia Gameiro,
  • Catarina Nascimento,
  • Jorge Correia and
  • Fernando Ferreira

5 November 2021

Feline mammary carcinoma (FMC) is a common neoplasia, showing aggressive clinicopathological features, without viable therapeutic options. The study of tumor microenvironment has gained importance, due to the ability to control tumor progression by r...

  • Article
  • Open Access
6 Citations
3,348 Views
14 Pages

15 February 2021

Feline mammary carcinoma (FMC) is the third most common type of neoplasia in cats, sharing similar epidemiological features with human breast cancer. In humans, histone deacetylases (HDACs) play an important role in the regulation of gene expression,...

  • Article
  • Open Access
21 Citations
4,995 Views
20 Pages

21 April 2021

Feline mammary carcinoma (FMC) is a highly prevalent tumor, showing aggressive clinicopathological features, with HER2-positive being the most frequent subtype. While, in human breast cancer, the use of anti-HER2 monoclonal antibodies (mAbs) is commo...

  • Article
  • Open Access
49 Citations
6,012 Views
16 Pages

Serum PD-1/PD-L1 Levels, Tumor Expression and PD-L1 Somatic Mutations in HER2-Positive and Triple Negative Normal-Like Feline Mammary Carcinoma Subtypes

  • Catarina Nascimento,
  • Ana Catarina Urbano,
  • Andreia Gameiro,
  • João Ferreira,
  • Jorge Correia and
  • Fernando Ferreira

28 May 2020

Tumor microenvironment has gained great relevance due to its ability to regulate distinct checkpoints mediators, orchestrating tumor progression. Serum programmed cell death protein-1 (PD-1) and programmed death ligand-1 (PD-L1) levels were compared...

  • Article
  • Open Access
4 Citations
2,541 Views
9 Pages

Immunohistochemical Expression of p62 in Feline Mammary Carcinoma and Non-Neoplastic Mammary Tissue

  • Gian Enrico Magi,
  • Francesca Mariotti,
  • Lorenzo Pallotta,
  • Alessandro Di Cerbo and
  • Franco Maria Venanzi

2 August 2022

The p62 protein, also called sequestosome 1 (SQSTM1), is a ubiquitin-binding scaffold protein. In human oncology, although the interest in the function of this protein is recent, the knowledge is now numerous, but its role in tumorigenesis is not yet...

  • Article
  • Open Access
19 Citations
3,751 Views
13 Pages

Diagnostic Value of VEGF-A, VEGFR-1 and VEGFR-2 in Feline Mammary Carcinoma

  • Catarina Nascimento,
  • Andreia Gameiro,
  • João Ferreira,
  • Jorge Correia and
  • Fernando Ferreira

1 January 2021

Vascular endothelial growth factor (VEGF-A) plays an essential role in tumor-associated angiogenesis, exerting its biological activity by binding and activating membrane receptors, as vascular endothelial growth factor receptor 1 and 2 (VEGFR-1, VEGF...

  • Review
  • Open Access
6 Citations
9,679 Views
31 Pages

29 September 2023

Tyrosine kinase inhibitors (TKIs) have become invaluable in the treatment of human and canine malignancies, but their role in feline oncology is less defined. While toceranib phosphate and masitinib mesylate are licensed for use in dogs, no TKI is ye...

  • Article
  • Open Access
11 Citations
3,722 Views
17 Pages

Tyrosine Kinase Inhibitors Are Promising Therapeutic Tools for Cats with HER2-Positive Mammary Carcinoma

  • Andreia Gameiro,
  • Filipe Almeida,
  • Catarina Nascimento,
  • Jorge Correia and
  • Fernando Ferreira

Feline mammary carcinoma (FMC) is a common neoplasia in cat, being HER2-positive the most prevalent subtype. In woman’s breast cancer, tyrosine kinase inhibitors (TKi) are used as a therapeutic option, by blocking the phosphorylation of the HER2 tyro...

  • Article
  • Open Access
3 Citations
4,377 Views
15 Pages

Evaluation of TFR-1 Expression in Feline Mammary Cancer and In Vitro Antitumor Efficacy Study of Doxorubicin-Loaded H-Ferritin Nanocages

  • Nicolò Rensi,
  • Alessandro Sammarco,
  • Valentina Moccia,
  • Alessandro Calore,
  • Filippo Torrigiani,
  • Davide Prosperi,
  • Maria Antonietta Rizzuto,
  • Michela Bellini,
  • Raffaella De Maria and
  • Laura Cavicchioli
  • + 4 authors

12 March 2021

The transferrin receptor 1 (TFR-1) has been found overexpressed in a broad range of solid tumors in humans and is, therefore, attracting great interest in clinical oncology for innovative targeted therapies, including nanomedicine. TFR-1 is recognize...

  • Article
  • Open Access
3 Citations
4,644 Views
10 Pages

6 August 2021

Drug repurposing and drug combination are important therapeutic approaches in cancer therapy. Drug repurposing aims to give new indications to drugs, rather than the original indication, whereas drug combination presupposes that the effect that is ob...

  • Case Report
  • Open Access
3 Citations
6,529 Views
8 Pages

Anaplastic Mammary Carcinoma in Cat

  • Maria Soares,
  • Jorge Correia,
  • Catarina Nascimento and
  • Fernando Ferreira

Clinical, pathological, and immunohistochemical findings related to a feline mammary tumor with similar features to canine anaplastic mammary carcinoma are herein described for the first time. A female cat was presented for clinical evaluation with g...

  • Article
  • Open Access
4 Citations
3,228 Views
15 Pages

TIM-3 Is a Potential Immune Checkpoint Target in Cats with Mammary Carcinoma

  • Sofia Valente,
  • Catarina Nascimento,
  • Andreia Gameiro,
  • João Ferreira,
  • Jorge Correia and
  • Fernando Ferreira

6 January 2023

Recent findings in human breast cancer (HBC) indicate that T-cell immunoglobulin and mucin-domain-containing molecule-3 (TIM-3)-targeted therapies may effectively activate anticancer immune responses. Although feline mammary carcinoma (FMC) is a valu...

  • Article
  • Open Access
2 Citations
2,146 Views
18 Pages

17 September 2024

Background: Feline mammary carcinoma (FMC) is a prevalent and fatal carcinoma that predominantly affects unspayed female cats. FMC is the third most common carcinoma in cats but is still underrepresented in research. Current diagnosis methods include...

  • Article
  • Open Access
6 Citations
3,671 Views
17 Pages

Pathological Features and Molecular Phenotype of MMTV Like-Positive Feline Mammary Carcinomas

  • Francesca Parisi,
  • Luisa Vera Muscatello,
  • Prospero Civita,
  • Francesca Lessi,
  • Michele Menicagli,
  • Francesca Millanta,
  • Barbara Brunetti,
  • Cinzia Benazzi,
  • Giuseppe Sarli and
  • Alessandro Poli
  • + 3 authors

27 September 2021

In the last few years MMTV-like nucleotide sequences were detected in some feline and canine mammary tumours. Due to the confirmed role of cats in the epidemiology of the MMTV-like virus, the aim of this study was to investigate the main pathological...

  • Feature Paper
  • Article
  • Open Access
2 Citations
7,216 Views
20 Pages

10 March 2025

Feline mammary carcinoma (FMC) is an aggressive neoplasm with a poor prognosis. Clinical staging is crucial for risk assessment, yet the current WHO system lacks granularity, particularly in Stage III. Aligning this system with human breast cancer st...

  • Review
  • Open Access
32 Citations
6,891 Views
20 Pages

Cat Mammary Tumors: Genetic Models for the Human Counterpart

  • Filomena Adega,
  • Ana Borges and
  • Raquel Chaves

16 August 2016

The records are not clear, but Man has been sheltering the cat inside his home for over 12,000 years. The close proximity of this companion animal, however, goes beyond sharing the same roof; it extends to the great similarity found at the cellular a...

  • Review
  • Open Access
13 Citations
6,133 Views
13 Pages

31 August 2015

Relative to the dog, integration of the cat into the “One Health” concept has been more restricted, particularly in the field of molecular oncology. Beyond the continual need to enhance the sophistication of feline healthcare per se, the unique spect...

  • Review
  • Open Access
3 Citations
7,294 Views
26 Pages

5 August 2025

As the body of knowledge on feline mammary tumors (FMTs) continues to grow, their histological classification and grading systems have undergone revisions and updates to better reflect the biological behavior of these tumors. In this review, the hist...

  • Article
  • Open Access
1 Citations
2,728 Views
23 Pages

27 October 2025

The objective of this study was to assess the prevalence and clinicopathological characteristics of tumors in dogs and cats in Lithuania. A total of 3525 routine diagnostic samples collected from 1 January 2020 to 1 July 2025 were microscopically exa...

  • Article
  • Open Access
6 Citations
3,061 Views
15 Pages

16 October 2024

Feline cancer is increasingly recognized as a major cause of mortality, yet data on tumor prevalence and behavior in cats, particularly in non-Western regions, remain limited. This study analyzed a decade of feline tumor data in Korea from 2012 to 20...

  • Article
  • Open Access

Mapping Feline Oncology in Portugal: A National Characterization

  • Paula Brilhante-Simões,
  • Ricardo Lopes,
  • Leonor Delgado,
  • Augusto Silva,
  • Fernando Pacheco,
  • Ricardo Marcos,
  • Felisbina Queiroga and
  • Justina Prada

23 January 2026

This retrospective study describes the national histopathology caseload of feline tumours submitted to a Portuguese diagnostic laboratory over a five-year period. A total of 1904 histopathology-confirmed neoplasms were analysed by biological behaviou...

  • Review
  • Open Access
17 Citations
8,162 Views
18 Pages

Feline Oncogenomics: What Do We Know about the Genetics of Cancer in Domestic Cats?

  • Latasha Ludwig,
  • Melanie Dobromylskyj,
  • Geoffrey A. Wood and
  • Louise van der Weyden

4 October 2022

Cancer is a significant cause of morbidity and mortality in domestic cats. In humans, an understanding of the oncogenome of different cancer types has proven critical and is deeply interwoven into all aspects of patient care, including diagnostics, p...

  • Article
  • Open Access
12 Citations
3,924 Views
15 Pages

An Immunohistochemical Study of the PTEN/AKT Pathway Involvement in Canine and Feline Mammary Tumors

  • Pietro Asproni,
  • Francesca Millanta,
  • Lorenzo Ressel,
  • Fabio Podestà,
  • Francesca Parisi,
  • Iacopo Vannozzi and
  • Alessandro Poli

1 February 2021

Phosphatase and tensin homolog deleted on chromosome10 (PTEN), phospho-v-Akt murine thymoma viral oncogene homolog (AKT), and the Rapamycin-Insensitive Companion of mTOR (Rictor) expression was investigated by immunohistochemistry in 10 canine mammar...

  • Review
  • Open Access
1,866 Views
31 Pages

Inside the Tumor: Decoding the Feline Mammary Tumor Microenvironment and Its Prognostic Value—A Review

  • Joana Rodrigues-Jesus,
  • Ana Canadas-Sousa,
  • Hugo Vilhena and
  • Patrícia Dias-Pereira

8 October 2025

The tumor microenvironment (TME) comprises neoplastic and stromal cells, and extracellular matrix elements, all engaging in a complex interplay that ultimately dictates tumorigenesis, cancer progression, and therapeutic response. While extensive rese...

  • Article
  • Open Access
1 Citations
2,315 Views
20 Pages

PD-1, PD-L1, and PD-L2 Expression as Predictive Markers in Rare Feline Mammary Tumors

  • Maria Franco,
  • Fernanda Seixas,
  • Maria dos Anjos Pires,
  • Anabela Alves,
  • Andreia Santos,
  • Carla Marrinhas,
  • Hugo Vilhena,
  • Joana Santos,
  • Pedro Faísca and
  • Fernando Ferreira
  • + 3 authors

3 August 2025

Feline mammary carcinoma (FMC) exhibits aggressive behavior, with limited treatment options. Given the relevance of the PD-1/PD-L1/PD-L2 axis in human breast cancer immunotherapy, this study assessed PD-1 and its ligands in rare FMC histotypes (n = 4...