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Serum Markers for Prostate Cancer : A Rational Approach to the Literature
Introduction: Due to its universal applicability for early detection and prediction of cancer stage and disease recurrence, widespread implementation of serum-based prostate-specific antigen (PSA) measurements has a significant influence on current treatment strategies for men with prostate cancer (PCa). However, over-detection and the resultant over-treatment of indolent cancers have been strongl
Expression of Prostate Specific Antigen on the Surface of a Filamentous Phage
We have constructed two phagemid vectors containing the gene coding for human Prostate Specific Antigen (PSA) translationally fused to a pelB signal sequence and minor coat protein III of phage fd leading to phage particles that carry PSA on their tips. Phages were characterized by Western blotting and by panning, using biotinylated monoclonal anti-PSA antibodies immobilized onto streptavidin-coat
Complex formation between protein C inhibitor and prostate‐specific antigen in vitro and in human semen
Protein C inhibitor (PCI), a serine‐proteinase inhibitor first purified from human blood plasma, occurs at high concentrations (3–4 μM) in seminal fluid in both a high‐molecular‐mass and low‐molecular‐mass form. Immunochemical data have previously suggested that PCI in seminal plasma forms complexes with the most abundant serine proteinase in semen, prostate‐specific antigen (PSA). To provide a st
Can RE Help Better Prepare Industrial AI for Commercial Scale?
This issue marks the start of my term as department editor for the “Requirements” column. I very much look forward to exploring contemporary aspects of requirements and requirements engineering (RE) in the coming years! As an institute researcher with RISE, I primarily work in strictly regulated domains, in which requirements are cornerstones in the development activities. Please check my introduc
Prostate specific antigen predominantly forms a complex with alpha1‐antichymotrypsin in blood. Implications for procedures to measure prostate specific antigen in serum
Background. Prostate specific antigen (PSA) is a zymogen of a 33‐kilodalton (kD) serine proteinase with extensive similarity to glandular kallikreins. The mechanism responsible for converting the zymogen into active proteinase has not been defined, but active PSA may be irreversibly inactivated in vitro by two of the major proteinase inhibitors in blood: alpha1‐antichymotrypsin and alpha2‐macroglo
Molecular cloning and sequence analysis of the cDNA encoding the human acrosin-trypsin inhibitor (HUSI-II)
A complete cDNA clone encoding the human acrosin-trypsin inhibitor HUSI-II has been isolated from a cDNA library of human testis and completely sequenced. The cDNA of 594 bp contained an open reading frame of 252 base pairs, The deduced amino acid sequence comprised the complete amino acid sequence of HUSI-II[1] and a putative signal peptide. Northern blotting analysis revealed that HUSI-II is syn
Gastricsin‐Mediated Proteolytic Degradation of Human Seminal Fluid Proteins at pH Levels Found in the Human Vagina
The proteolytic degradation of human seminal fluid proteins at acidic conditions has been investigated. Upon acidification to the pH level of the human vagina, autoproteolysis of most seminal fluid proteins occurred after 30 minute of incubation at 37°C. The degradation was unaffected by inhibitors of serine, thiol, or me‐tallo proteases, whereas pepstatin prevented any proteolysis. The proteins i
Structure, function, and regulation of the enzyme activity of prostate-specific antigen
Prostate-specific antigen (PSA) and human glandular kallikrein 1 (hGK-1) are structurally similar products of the human glandular kallikrein gene locus on chromosome 19 that become selectively expressed by human prostate tissue. PSA is one of the most abundant prostate-derived proteins in the seminal fluid. The mature form of PSA, a single-chain glycoprotein of 237 amino acids, is a serine proteas
Cell biology of semenogelin
Summary Semenogelin is the predominant protein in human semen. It is synthetised by the secretory epithelium of the seminal vesicles as a 461 amino acid precursor protein. Following cleavage of a predominantly hydrophobic signal peptide, the secreted protein contains 439 amino acid residues. The amino acid sequence of semenogelin has a repetitive structure, but it displays no significant homology
Three predominant prostatic proteins : Drei vorherrschende Prostataproteine
Summary Prostatic acid phosphatase (PAP), prostate‐specific antigen (PSA; or γ‐seminoprotein), and β‐microseminoprotein (β‐MSP; PSP94 or β‐inhibin) are the three predominant proteins secreted by the normal human prostate gland. In the epithelium of normal and hyperplastic prostatic acini and ducts PAP, PSA and β‐MSP have an identical immunohistochemical localization. Highly differentiated (grade I
Significance of different molecular forms of serum PSA : The free, noncomplexed form of PSA versus that complexed to α1-antichymotrypsin
Prostate specific antigen is an abundant prostate-derived serine protease in the seminal fluid. Low concentrations of the protein are normally released into blood, but above normal concentrations are frequently detected in prostate disease. The PSA-ACT complex is the predominant molecular form of serum PSA (up to ≃95%) although complex formation is slow between the purified proteins in vitro. A fr
Regulation of the enzymatic activity of prostate-specific antigen and its reactions with extracellular protease inhibitors in prostate cancer
Prostate-specific antigen (PSA) is a tissue-specific serine protease similar in structure to the trypsin-like glandular kallikreins but which is unique inasmuch as the enzyme activity is similar to that of chymotrypsin. The active enzyme is a single chain glycoprotein of 237 amino acids. The major form of PSA in serum is complexed to α1-antichymotrypsin (ACT). A small amount is free, non-complexed
Biochemistry of prostate specific antigen, PSA
Human prostate specific antigen, PSA, is a product of the human glandular kallikrein gene locus on chromosome 19 that is almost selectively expressed by prostate tissue. PSA is one of the dominating prostate derived proteins in seminal fluid. The mature form of PSA, a single chain glycoprotein of 237 amino acids, is a serine protease manifesting restricted chymotrypsin-like activity. PSA is mainly
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Screening for prostate cancer : an update.
The introduction of total prostate-specific antigen (tPSA) testing in serum has revolutionized the detection and management of men with prostate cancer. This review will highlight some of the exciting new developments in the field of prostate cancer screening in general and from our SPORE research program at Memorial-Sloan Kettering Cancer Center. First, it is important to understand that the inhe
Civilsamhällets arbete med nyanländas delaktighet i samhället: En rapport om förskjutningar av välfärdsansvar i Sverige under perioden 2016-2019
I den här rapporten analyseras ett urval av de totalt 100 projekt som ingått i Arvsfondens Nyanländasatsning vilken hade till syfte att stärka nyanlända barns och ungas etablering och delaktighet i samhället. Rapporten bygger på tre delstudier. En dokumentstudie bestående av ansökningshandlingar, årsrapporter och i förekommande fall slutrapporter från projekten, en enkät omfattande 89 av sats
Viktigt att beakta att hudåkommor kan variera beroende på hudtyp
More than a quarter of Sweden's population are of foreign background and as signs and prevalence of skin diseases vary across different skin types, lack of knowledge on this issue can potentially threaten health equity. In addition to being melanin rich, structural and functional characteristics in the skin of black individuals, such as hyperreactive melanocytes and fibroblasts, explain some of th
WOMEN, GENDER AND PEACEBUILDING IN AFRICA
Peace agreements, especially those signalling the end of internal armed conflicts, can be understood as blueprints of the envisioned peacebuilding. This chapter provides a discursive analysis of 130 peace agreements from interstate and intrastate conflicts in Africa between 1990 and 2019 which have provisions on women, girls or gender. The aim is to explore how women, their roles and functions are
EFFECTS OF INTERNAL COOLANT CROSSFLOW ON FILM-COOLING PERFORMANCE OF DOUBLE-JET AND CYLINDRICAL HOLES
In this paper, the effects of internal coolant crossflow on double-jet holes were simulated and compared with two rows of cylindrical holes under three blowing ratios (M = 0.5, 1.0, and 1.5), with an established and validated turbulence model. The results show that double-jet holes can provide better film cooling performance for the three different blowing ratios compared with cylindrical holes. A