Is PSA a kallikrein?
The introduction of testing for prostate-specific antigen (PSA), a member of the fifteen-gene family of kallikrein-related peptidases and also known as kallikrein-related peptidase 3 (KLK3), in blood has revolutionized both the detection and management of prostate cancer.
What is kallikrein 3?
Kallikrein-3, called prostate specific antigen (PSA), is an established tumor marker that aids in the diagnosis, staging, and follow up of prostate cancer.
What gene encodes PSA?
Prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3), P-30 antigen, is a glycoprotein enzyme encoded in humans by the KLK3 gene. PSA is a member of the kallikrein-related peptidase family and is secreted by the epithelial cells of the prostate gland.
What PSA level is too high?
PSA levels under 4 ng/ml are generally considered normal, while levels over 4 ng/ml are considered abnormal. PSA levels between 4 and 10 ng/ml indicate a risk of prostate cancer higher than normal. When the PSA level is above 10 ng/ml, risk of prostate cancer is much higher.
What produces PSA other than prostate?
Besides prostate cancer, potential causes for an elevated PSA include: Infection: Prostatitis, urinary tract infection (UTI), and other infections involving the genitourinary tract can cause PSA elevations.
What does a PSA level of 100 mean?
CONCLUSIONS. Our results suggest the possibility for a biopsy-free diagnosis of prostate cancer, with the criterion of a PSA level >100 ng/ml and evidence of advanced disease in imaging studies.
What causes PSA to suddenly rise?
Any prostate stimulation can trigger the release of extra PSA. This can include ejaculation and vigorous exercise, especially bike riding – but even having a DRE can raise PSA levels. For this reason, doctors usually draw blood before performing the DRE to avoid affecting the PSA test results.
What are kallikreins and how do they work?
Kallikreins: Essential epidermal messengers for regulation of the skin microenvironment during homeostasis, repair and disease Pauline Nauroy⁎and Alexander Nyström⁎ Author informationArticle notesCopyright and License informationDisclaimer Department of Dermatology, Medical Center – University of Freiburg, Hauptstrasse 7, 79104 Freiburg, Germany
What is the role of kallikrein 7 in pancreatic cancer?
[PubMed] [CrossRef] [Google Scholar] 37. Johnson S.K., Ramani V.C., Hennings L., Haun R.S. Kallikrein 7 enhances pancreatic cancer cell invasion by shedding E-cadherin. Cancer. 2007;109:1811–1820. doi: 10.1002/cncr.22606.
What is human kallikrein-related peptidase 14?
[PubMed] [CrossRef] [Google Scholar] 14. Emami N., Diamandis E.P. Human kallikrein-related peptidase 14 (KLK14) is a new activator component of the KLK proteolytic cascade. J. Biol.
What is dysregulation of KLKS in cancer?
KLKs are dysregulated in multiple types of cancers, such as prostate or ovarian cancer and could potentially be used as diagnostic and prognostic markers [52]. In this context, KLKs dysregulation could either be detected directly in the affected tissue or in sera, as KLKs are able to diffuse through tissues to reach the blood circulation.