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  • 1
    Online Resource
    Online Resource
    Wiley ; 2022
    In:  Veterinary Medicine and Science Vol. 8, No. 4 ( 2022-07), p. 1409-1420
    In: Veterinary Medicine and Science, Wiley, Vol. 8, No. 4 ( 2022-07), p. 1409-1420
    Abstract: Dogs have a species‐specific susceptibility for developing mast cell tumours (MCTs). Mutations in the KIT proto‐oncogene ( KIT ) are known to contribute to the neoplastic biology of mast cells. In dogs, the most common KIT mutation is an internal tandem duplication (ITD) in exon 11 which has been considered a useful prognostic supplement to traditional histopathological tumour grading. Objective The aim of this retrospective study was to explore the importance of KIT exon 11 ITD mutation status and known clinical and pathological indices in predicting prognosis in a cohort of Australian dogs diagnosed with MCT. Methods Clinical parameters, survival data, and KIT mutation status were collected and assessed for 220 dogs with cutaneous or subcutaneous MCT ( n  = 189 and n  = 31, respectively). Results In at least one of the multivariable models, tumour grade (cutaneous Kiupel low or high grade) or tumour subcutaneous location, multiple concurrent MCTs, metastasis at the time of surgery, and senior age were statistically significant in predicting the outcome (MCT‐related death and/or second MCT diagnosis) at 6‐ or 12‐month post‐tumour excision. KIT exon 11 ITD mutation status was not a significant predictor in any of the final multivariable models and was strongly correlated with high histological grade ( p  〈  0.001). Conclusion In this sample of dogs, tumour histological grading remained the single most powerful prognostic indicator for MCT outcome. However, concurrent evaluation of multiple prognostically significant parameters provides information of potential value to inform therapeutic management for each patient.
    Type of Medium: Online Resource
    ISSN: 2053-1095 , 2053-1095
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2819409-3
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  • 2
    In: Developmental Cell, Elsevier BV, Vol. 7, No. 4 ( 2004-10), p. 597-606
    Type of Medium: Online Resource
    ISSN: 1534-5807
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2004
    detail.hit.zdb_id: 2054967-2
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2006
    In:  Mammalian Genome Vol. 17, No. 5 ( 2006-05), p. 365-374
    In: Mammalian Genome, Springer Science and Business Media LLC, Vol. 17, No. 5 ( 2006-05), p. 365-374
    Type of Medium: Online Resource
    ISSN: 0938-8990 , 1432-1777
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2006
    detail.hit.zdb_id: 1058547-3
    detail.hit.zdb_id: 1459397-X
    SSG: 12
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  • 4
    Online Resource
    Online Resource
    American Association of Zoo Veterinarians ; 2021
    In:  Journal of Zoo and Wildlife Medicine Vol. 51, No. 4 ( 2021-1-12)
    In: Journal of Zoo and Wildlife Medicine, American Association of Zoo Veterinarians, Vol. 51, No. 4 ( 2021-1-12)
    Type of Medium: Online Resource
    ISSN: 1042-7260
    Language: Unknown
    Publisher: American Association of Zoo Veterinarians
    Publication Date: 2021
    detail.hit.zdb_id: 1007437-5
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  • 5
    Online Resource
    Online Resource
    SAGE Publications ; 2019
    In:  Journal of Veterinary Diagnostic Investigation Vol. 31, No. 5 ( 2019-09), p. 756-760
    In: Journal of Veterinary Diagnostic Investigation, SAGE Publications, Vol. 31, No. 5 ( 2019-09), p. 756-760
    Abstract: DNA amplification by PCR detects KIT exon 11 internal tandem duplications in canine mast cell tumors (MCTs). Tissue-specific inhibitors often contaminate DNA extracted from formalin-fixed, paraffin-embedded (FFPE) canine MCTs, blocking PCR amplification and, consequently, preventing mutation detection. We used a commercial kit to extract DNA from FFPE canine MCTs. Two independent PCR assays, each with one primer set, were used to amplify target genes ( HPRT and KIT) directly after FFPE DNA extraction. PCR amplification failed with at least one primer set in 153 of 280 samples (54.6%, 95% CI: 48.8–60.5%). One or 2 DNA washing steps were required to remove PCR inhibitors in 130 of 280 (46.4%) and 23 of 280 (8.2%) of these cases, respectively. DNA concentration and quality (A 260 /A 280 and A 260 /A 230 ) either pre- or post-washing were not associated with ability of the samples to be amplified by PCR using both HPRT and KIT primer sets. Low-grade and subcutaneous MCTs were less likely to amplify directly after DNA extraction and without any washing steps compared to high-grade MCTs using KIT gene primers.
    Type of Medium: Online Resource
    ISSN: 1040-6387 , 1943-4936
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 287603-6
    detail.hit.zdb_id: 2265211-5
    SSG: 22
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  • 6
    Online Resource
    Online Resource
    SAGE Publications ; 1992
    In:  Journal of Veterinary Diagnostic Investigation Vol. 4, No. 3 ( 1992-07), p. 306-311
    In: Journal of Veterinary Diagnostic Investigation, SAGE Publications, Vol. 4, No. 3 ( 1992-07), p. 306-311
    Abstract: The pattern of distribution of cytokeratin (CK) intermediate filaments can be used to characterize subsets of epithelial tissues. The purpose of the study was to examine the CK expression of feline pinna skin. Six normal feline pinnae were routinely processed in formalin. An immunohistochemical method was used to stain the pinnae with 8 commercially available anti-human CK antibodies (Abs) (PKK1, CAM 5.2, UCD 10/ 11, 35BH11, 34BE12, AE1/AE3, MAK 6, A575) and an anti-human laminin Ab. All the CK Abs selectively localized to epithelium except 35BH11, which did not react with any part of the pinna. Some epithelial subsets were identified by their unique staining pattern with CK Abs. Basal cells but not suprabasal cells of the epidermis stained with PKK1; basal but not lumenal cells of apocrine glands stained with 34BE12. Apocrine glands stained with all CK Abs except 35BH11. All epithelial structures were stained with A575. Basal lamina of epithelial and mesenchymal tissues was clearly identified by the anti-laminin Ab. The results indicate that in cat pinna some commercially available anti-human CK Abs selectively stain subsets of epithelium and adnexa. PKK1, 34BE12, and A575 were the CK Abs with the most consistent staining patterns, the other Abs stained more variably from pinna to pinna. The pattern of epithelial and adnexal staining was similar but not identical to that reported for humans.
    Type of Medium: Online Resource
    ISSN: 1040-6387 , 1943-4936
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1992
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    detail.hit.zdb_id: 2265211-5
    SSG: 22
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  • 7
    In: Research in Veterinary Science, Elsevier BV, Vol. 149 ( 2022-12), p. 82-89
    Type of Medium: Online Resource
    ISSN: 0034-5288
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2022
    detail.hit.zdb_id: 840961-4
    SSG: 22
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  • 8
    Online Resource
    Online Resource
    Wiley ; 2020
    In:  Veterinary Medicine and Science Vol. 6, No. 1 ( 2020-02), p. 3-18
    In: Veterinary Medicine and Science, Wiley, Vol. 6, No. 1 ( 2020-02), p. 3-18
    Abstract: Mast cell neoplasia clinical presentation and biological behaviour vary considerably across mammalian species, ranging from a solitary benign mass to an aggressive systemic malignancy. Mutations in the KIT Proto‐Oncogene Receptor Tyrosine Kinase (KIT) gene are common molecular abnormalities involved in mast cell tumorigenesis . KIT mutations often occur in dog, cat and human neoplastic mast cells and result in altered Kit protein structure and function. In dogs, certain KIT mutations are associated with more malignant and lethal disease. In contrast, KIT mutations in feline and human mast cell neoplasms are not correlated with prognosis, but are of value in diagnosis and treatment planning in humans. KIT genetic abnormalities have not been well investigated in other species, although aberrant cytoplasmic Kit protein staining detected in neoplasms of the ferret, horse and cow resembles aberrant Kit staining patterns detected in neoplastic mast cells of dogs, cats and humans. Mutations within KIT are classified as either regulatory‐type or enzymatic pocket‐type mutations according to their location within the KIT Proto‐Oncogene . Mutations within the enzymatic pocket domain confer tumour resistance to tyrosine kinase inhibitors (TKIs). Hence, knowledge of tumour KIT mutation status adds valuable information for optimizing patient treatment strategies. The use of TKIs in combination with conventional chemotherapeutics has opened a new treatment avenue for patients unresponsive to existing drugs. This review highlights the similarities and differences of mast cell neoplasia in mammals with a special focus on the involvement of KIT in the canine and feline forms in comparison to human mast cell neoplasia.
    Type of Medium: Online Resource
    ISSN: 2053-1095 , 2053-1095
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2819409-3
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  • 9
    Online Resource
    Online Resource
    The Royal Society ; 2003
    In:  Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences Vol. 358, No. 1436 ( 2003-08-29), p. 1381-1388
    In: Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, The Royal Society, Vol. 358, No. 1436 ( 2003-08-29), p. 1381-1388
    Abstract: The elucidation of the molecular control of the initiation of mammalian embryogenesis is possible now that the transcriptomes of the full–grown oocyte and two–cell stage embryo have been prepared and analysed. Functional annotation of the transcriptomes using gene ontology vocabularies, allows comparison of the oocyte and two–cell stage embryo between themselves, and with all known mouse genes in the Mouse Genome Database. Using this methodology one can outline the general distinguishing features of the oocyte and the two–cell stage embryo. This, when combined with oocyte–specific targeted deletion of genes, allows us to dissect the molecular networks at play as the differentiated oocyte and sperm transit into blastomeres with unlimited developmental potential.
    Type of Medium: Online Resource
    ISSN: 0962-8436 , 1471-2970
    RVK:
    Language: English
    Publisher: The Royal Society
    Publication Date: 2003
    detail.hit.zdb_id: 208382-6
    detail.hit.zdb_id: 1462620-2
    SSG: 12
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  • 10
    In: Veterinary and Comparative Oncology, Wiley, Vol. 19, No. 2 ( 2021-06), p. 381-392
    Abstract: Mast cell tumours (MCT) have been documented in numerous species and mutations within the KIT proto‐oncogene are implicated in the neoplastic biology of mast cells in humans, dogs and cats. This study determined high KIT gene nucleotide and Kit amino acid sequence homology between several species known to suffer mast cell neoplasia and especially high sequence conservation between the cheetah ( Acinonyx jubatus ) and domestic cat ( Felis catus ) KIT sequences. As a result, we hypothesised that KIT mutations would exist in the neoplastic DNA of four cheetahs diagnosed with MCT from a recent case series. PCR and Sanger sequencing identified conservative exon 6 KIT mutations in two of the four cheetahs. The mutations were different between the two cheetahs. Only wild‐type DNA in exons 6, 8, 9 and 11 of KIT was observed in the MCTs of the remaining two cheetahs. Twenty cutaneous MCTs from domestic cats were collected for KIT mutation comparison. Twelve tumours possessed a mutation within KIT exons 6, 8 or 9 (60%, 95% CI 38.5%‐81.5%). No mutations were detected in exon 11. There was no significant association between domestic feline MCT KIT mutation status and tumour histological grade (traditional schematic, P  = .934; Sabattini 2‐tier schematic, P  = .762) or mitotic index ( P  = .750). KIT mRNA and Kit protein sequences are conserved across species but the role of KIT in feline MCT pathogenesis is not completely understood.
    Type of Medium: Online Resource
    ISSN: 1476-5810 , 1476-5829
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2129634-0
    detail.hit.zdb_id: 2128000-9
    SSG: 22
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