Version 1
: Received: 7 January 2019 / Approved: 9 January 2019 / Online: 9 January 2019 (08:56:09 CET)
Version 2
: Received: 9 February 2019 / Approved: 13 February 2019 / Online: 13 February 2019 (10:07:11 CET)
Version 3
: Received: 21 February 2019 / Approved: 21 February 2019 / Online: 21 February 2019 (06:52:00 CET)
Calderón, L.G.R.; Kobayashi, P.E.; Vasconcelos, R.O.; Fonseca-Alves, C.E.; Laufer-Amorim, R. Characterization of Collagen Fibers (I, III, IV) and Elastin of Normal and Neoplastic Canine Prostatic Tissues. Vet. Sci.2019, 6, 22.
Calderón, L.G.R.; Kobayashi, P.E.; Vasconcelos, R.O.; Fonseca-Alves, C.E.; Laufer-Amorim, R. Characterization of Collagen Fibers (I, III, IV) and Elastin of Normal and Neoplastic Canine Prostatic Tissues. Vet. Sci. 2019, 6, 22.
Calderón, L.G.R.; Kobayashi, P.E.; Vasconcelos, R.O.; Fonseca-Alves, C.E.; Laufer-Amorim, R. Characterization of Collagen Fibers (I, III, IV) and Elastin of Normal and Neoplastic Canine Prostatic Tissues. Vet. Sci.2019, 6, 22.
Calderón, L.G.R.; Kobayashi, P.E.; Vasconcelos, R.O.; Fonseca-Alves, C.E.; Laufer-Amorim, R. Characterization of Collagen Fibers (I, III, IV) and Elastin of Normal and Neoplastic Canine Prostatic Tissues. Vet. Sci. 2019, 6, 22.
Abstract
Collagen (Coll) is the most common protein in the extracellular matrix, responsible for providing tissue structure and support. In some types of cancer, including prostate cancer (PC) Coll deregulation was described and related to tumor progression and metastasis. This study aimed to investigate Coll-I, III, IV and elastin in canine normal prostate and PC, using Picrosirius red (PSR) and Immunohistochemical (IHC) analysis. Eight normal prostates and 10 PC from formalin-fixed, paraffin-embedded samples were used. Collagen fibers area was analyzed with ImageJ software. The distribution of Coll-I and Coll-III was approximately 80% around prostatic ducts and acini, 15% among smooth muscle and 5% around in blood vessels, in both normal prostate and PC. Immunostaining for Coll-IV was observed in the basal membrane of prostate acini, smooth muscle, blood vessels, and never fibers of normal and PC samples. Elastic fibers were found in the septa dividing the lobules and around the prostatic acini of normal samples. A high amount of elastic fibers was observed around the ducts and the urethra in normal and PC. The distribution and area percentage of staining for collagen are similar in normal and neoplastic canine prostate when analyzed with PSR and IHC.
Medicine and Pharmacology, Oncology and Oncogenics
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