scholarly journals Serum Total and Free Prostate Specific Antigen Levels as Novel Biomarker in Patients with COVID-19

2021 ◽  
Vol 5 (3) ◽  
Keyword(s):  
Retrospective Study ◽  
Early Detection ◽  
Prostate Specific Antigen ◽  
Specific Antigen ◽  
Diagnostic Value ◽  
Control Group ◽  
Tumor Biomarker ◽  
Group Methods ◽  
Group Control ◽  
The Mean

Objectives: This study aimed to evaluate the diagnostic value of TPSA and FPSA for early detection of COVID-19 and compare it with a control group. Methods: This is a retrospective study of 146 patients from the Respiratory Clinic in Sebha city, 73 of whom have COVID-19 PCR-confirmed and 73 who do not have COVID-19 (group control). Results: The mean and standard division age in the PCR-confirmed COVID-19 group was 61.51±16.40. In the PCR-confirmed COVID-19 group, the mean and standard division serum biomarker level for TPSA was 0.51±.26 ng/ml, and 0.57± 0.32 for FPSA. Conclusion: For the biomarkers TPSA and FPSA, there were no significant differences between the control and PCR-confirmed COVID-19 groups. These findings suggest that the tumor biomarker may be ineffective in detecting COVID-19.

scholarly journals Evaluation of micro-RNA in extracellular vesicles from blood of patients with prostate cancer

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0262017
Author(s):  
Jiyoon Kim ◽  
Siwoo Cho ◽  
Yonghyun Park ◽  
Jiyoul Lee ◽  
Jaesung Park
Keyword(s):  
Prostate Cancer ◽  
Prostate Specific Antigen ◽  
Extracellular Vesicles ◽  
Specific Antigen ◽  
Rna Isolation ◽  
Micro Rna ◽  
Control Group ◽  
Micro Rnas ◽  
The Mean ◽  
Better Than

Extracellular vesicles (EVs) contain various types of molecules including micro-RNAs, so isolating EVs can be an effective way to analyze and diagnose diseases. A lot of micro-RNAs have been known in relation to prostate cancer (PCa), and we evaluate miR-21, miR-141, and miR-221 in EVs and compare them with prostate-specific antigen (PSA). EVs were isolated from plasma of 38 patients with prostate cancer and 8 patients with benign prostatic hyperplasia (BPH), using a method that showed the highest recovery of RNA. Isolation of EVs concentrated micro-RNAs, reducing the cycle threshold (Ct) value of RT-qPCR amplification of micro-RNA such as miR-16 by 5.12 and miR-191 by 4.65, compared to the values before EV isolation. Normalization of target micro-RNAs was done using miR-191. For miR-221, the mean expression level of patients with localized PCa was significantly higher than that of the control group, having 33.45 times higher expression than the control group (p < 0.01). Area under curve (AUC) between BPH and PCa for miR-221 was 0.98 (p < 0.0001), which was better than AUC for prostate-specific antigen (PSA) level in serum for the same patients. The levels of miR-21 and miR-141 in EVs did not show significant changes in patients with PCa compared to the control group in this study. This study suggests isolating EVs can be a helpful approach in analyzing micro-RNAs with regard to disease.

scholarly journals Effect of finasteride on serum prostate-specific antigen (PSA) and on prostate of hamster Mesocricetus auratus (hMa)

2010 ◽  
Vol 25 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Dimas José Araújo Vidigal ◽  
Alcino Lázaro da Silva ◽  
Anilton César Vasconcelos ◽  
Dilermando Resende Fazito ◽  
Bárbara Lanice Araújo Verçosa ◽  
...  
Keyword(s):  
Prostate Specific Antigen ◽  
Statistical Difference ◽  
Specific Antigen ◽  
Mesocricetus Auratus ◽  
Control Group ◽  
Lumen Area ◽  
Elisa Method ◽  
Significant Difference ◽  
The Mean ◽  
Experimental Group

PURPOSE: Evaluate the effects of finasteride on the serum PSA and on the prostate of hamster-Mesocricetus auratus(hMa). METHODS: Twenty hMa male adults were split in groups control and experimental (n=10). Animals of the experimental group received 7.14ng/mL of finasteride, subcutaneously (SC) on the back three times per week, during 90 days. The finasteride dose was equivalent to 5.0mg administered to a 70kg man. At the end of the experiment the mean age for the animals in the control group was 15.2±1.13months and for the experimental group was 17.7±0.67 months. There was a statistically significant difference between mean ages of both groups (t value=5.98; p=0.001). The animals of the control group weighted 129.0±18.8g and the experimental group weighted 145.0±15.5g, t=1.88 e p=0.0514. The serum PSA was assessed through ELISA method. Prostates of those animals were collected and processed to histology and morphometry: the diameter of the acinous glands and the acinous epithelium, apoptosis, AgNORs and cellularity were assessed in both groups. RESULTS: Serum PSA decreased in the experimental group, 0.003ng/mL versus 0.763ng/mL, H= 7.982 e p= 0.0047. Decrease in the acinous area occurred in animals that received finasteride, 238.000±24.600 μm² versus 398.600±55.320 μm²; t= 2.653; p= 0.0122. A remarkable decrease in the area of the acinous epithelium occurred in the animals that received finasteride, 111.900±12.820 μm² versus 160.400±18.430 μm² t= 2.162; p= 0.0361. AgNORs were less expressed in finasteride treated animals, 2.846±0.877 versus 3.68 ±1.07 argyrophilic clusters for μm², p= < 0.0001. Apoptosis was more intense in the experimental group, 53.62±1.389 than in controls, 14.76 ± 2.137, p= 0.0408. However, there was no statistical difference in the cellularity between both groups, 74.75±5.5 cells, in controls versus 65.07±13.24, in treated animals, p=0.5105. CONCLUSIONS: Use of finasteride decreased serum PSA and several histological parameters of the Hamster's prostate, such as lumen area, acinous and epithelium area, and AgNORs expression. Finasteride increased apoptosis in the prostate acinous cells although no significant difference in the cellularity could be found between the two groups of animals under study.

Complexed prostate-specific antigen for early detection of prostate cancer in men with serum prostate-specific antigen levels of 2 to 4 nanograms per milliliter

Urology ◽  
2002 ◽  
Vol 60 (4) ◽  
pp. 31-35 ◽  
Author(s):  
Wolfgang Horninger ◽  
Carol D Cheli ◽  
Richard J Babaian ◽  
Herbert A Fritsche ◽  
Herbert Lepor ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Early Detection ◽  
Prostate Specific Antigen ◽  
Specific Antigen ◽  
Serum Prostate Specific Antigen

Evaluation of Prenatal Transportation Stress on the Number of Pituitary Corticotrophs in Mature Brahman Cows

2021 ◽  
Vol 99 (Supplement_2) ◽  
pp. 24-25
Author(s):  
Victoria Kamilar ◽  
Sarah West ◽  
Brittni P Littlejohn ◽  
Charles R Long ◽  
David G Riley ◽  
...  
Keyword(s):  
Fetal Programming ◽  
Anterior Pituitary ◽  
Adrenocorticotropic Hormone ◽  
Developmental Changes ◽  
Control Group ◽  
Midsagittal Plane ◽  
Gland Weight ◽  
Group Control ◽  
The Mean ◽  
Transportation Stress

Abstract Prenatal transportation stress (PNS) results in calves that are more temperamental and have greater circulating concentrations of cortisol compared to control calves. The objective of this experiment was to evaluate whether PNS alters the number of pituitary corticotrophs in mature Brahman cows. We hypothesized that the increased circulating cortisol concentrations previously characterized in this bovine model is associated with developmental changes in the anterior pituitary leading to an increased number of corticotrophs. Pregnant Brahman cows (n = 48) were transported in trailers for 2-hour periods at 60±5, 80±5, 100±5, 120±5, and 140±5 days of gestation. Non-transported pregnant cows (n = 48) were designated as the Control group. Control and PNS offspring heifers were managed together under the same environmental conditions. At approximately 5 yr of age, randomly selected non-pregnant cows (Control, n = 8; PNS, n = 6) were humanely harvested and the whole pituitaries were collected. Pituitaries were weighed, fixed in paraformaldehyde, serially dehydrated with graded ethanol, embedded in paraffin blocks, and cut into 5-μm sections. Immunohistochemistry was performed to detect cells expressing adrenocorticotropic hormone (ACTH) as a marker for corticotrophs. Three comparable sections from the midsagittal plane from each animal were processed using an ovine ACTH-specific antibody (Dr. A.F. Parlow, NIDDK). Five fields of view were analyzed per section (15 fields per animal). Anterior pituitary gland weight did not differ (P &gt; 0.10) between groups (Control = 2.11 ± 0.12 g; PNS = 2.10 ± 0.15 g). The mean number of ACTH-positive cells between control (531±56 cells/section) and PNS cows (477±49 cells/section) also did not differ (P &gt; 0.10). In conclusion, the number of pituitary corticotrophs in mature Brahman cows was not affected by prenatal transportation stress and is likely not a mechanism mediating the increased circulating cortisol concentrations seen in this bovine model of fetal programming.

scholarly journals Early detection of prostate cancer local recurrence by urinary prostate-specific antigen

2013 ◽  
Vol 3 (3) ◽  
pp. 213 ◽  
Author(s):  
Stéphane Bolduc ◽  
Brant A. Inman ◽  
Louis Lacombe ◽  
Yves Fradet ◽  
Roland R. Tremblay
Keyword(s):  
Prostate Cancer ◽  
Early Detection ◽  
Prostate Specific Antigen ◽  
Specific Antigen ◽  
Laboratory Assessment ◽  
Cross Sectional ◽  
Prostatectomie Radicale ◽  
Psa Recurrence ◽  
Patients Atteints De Cancer

Purpose: We assessed the role of urinary prostate-specific antigen(uPSA) in the follow-up of prostate cancer after retropubic radicalprostatectomy (RRP) for the early detection of local recurrences.Methods: We recruited 50 patients previously treated for prostatecancer with RRP and who had not experienced a prostatespecificantigen (PSA) recurrence within their first postoperativeyear into a cross-sectional laboratory assessment and prospective6-year longitudinal follow-up study. We defined biochemicalfailure as a serum PSA (sPSA) of 0.3 μg/L or greater. Patientsprovided blood samples and a 50-mL sample of first-voided urine.We performed Wilcoxon rank-sum and Fisher exact tests for statisticalanalysis.Results: The median sPSA was 0.13 μg/L. The median uPSA was0.8 μg/L, and was not significantly different when comparingGleason scores or pathological stages. Of the 50 patients, 27 initiallyhad a nondetectable sPSA but a detectable uPSA, and11 patients experienced sPSA failure after 6 years. Six patients haddetectable sPSA and uPSA initially. Fifteen patients were negativefor both sPSA and uPSA, and 13 remained sPSA-free after 6 years.The odds ratio (OR) of having sPSA failure given a positive uPSAtest was 4.5 if sPSA was undetectable, but was reduced to 2.6 ifsPSA was detectable. The pooled Mantel–Haenszel OR of 4.2 suggestedthat a detectable uPSA quadrupled the risk of recurrence,independent of whether sPSA was elevated or not. The sensitivityof uPSA for detecting future sPSA recurrences was 81% andspecificity was 45%.Conclusion: Urinary PSA could contribute to an early detection oflocal recurrences of prostate cancer after a radical prostatectomy.Objectif : Nous avons évalué le rôle de l’antigène prostatiquespécifique (APS) urinaire dans le suivi du cancer de la prostateaprès prostatectomie radicale rétropubienne (PRR) pour le dépistageprécoce de récidives locales.Méthodes : Cinquante patients atteints de cancer de la prostatetraités par PRR et n’ayant présenté aucune récidive avec anomaliede l’APS dans l’année suivant l’intervention chirurgicale ontété inscrits à une étude transversale par épreuves de laboratoireavec suivi longitudinal prospectif sur 6 ans. L’échec sur le planbiochimique était défini comme un taux d’APS sérique de 0,3 μg/Lou plus. Les patients devaient fournir des échantillons de sanget un échantillon d’urine du matin de 50 mL. Les analyses statistiquesreposaient sur le test de Wilcoxon et la méthode exactede Fisher.Résultats : La valeur médiane de l’APS sérique était de 0,13 μg/L.La valeur médiane de l’APS urinaire était de 0,8 μg/L; la différenceétait non significative quand on tenait compte des scores deGleason ou des stades pathologiques. Sur les 50 patients,27 présentaient des taux d’APS sérique non décelables au début,mais des taux d’APS urinaire décelables; 11 patients ont présentéun échec quant aux taux d’APS sérique après 6 ans. Six patientsavaient des taux d’APS sérique et urinaire décelables au départ.Quinze patients n’avaient aucun taux décelable d’APS sérique ouurinaire, et aucun APS sérique n’était toujours décelable chez13 patients après 6 ans. Le rapport de risque d’un échec quantaux taux d’APS sérique après détection d’APS urinaire est de 4,5en l’absence d’un taux d’APS sérique décelable, mais diminueà 2,6 en présence d’un taux d’APS sérique décelable. Le rapportde risque cumulé de 4,21 calculé par la méthode deMantel–Haenszel porte à croire que des taux d’APS urinaire décelablesquadruplent le risque de présenter une récidive, queles taux sériques soient élevés ou non. La sensibilité du test dedépistage de l’APS urinaire pour la détection des récidives avecanomalie des taux sériques était de 81 %, et la spécificité, de 45 %.Conclusion : Le taux d’APS urinaire peut contribuer à un dépistageprécoce des récidives locales après une prostatectomie radicale.

Early Detection of Residual Prostate Cancer After Radical Prostatectomy by an Ultrasensitive Assay for Prostate Specific Antigen

1993 ◽  
Vol 149 (4) ◽  
pp. 787-792 ◽  
Author(s):  
Thomas A. Stamey ◽  
Howard C.B. Graves ◽  
Nancy Wehner ◽  
Michelle Ferrari ◽  
Fuad S. Freiha
Keyword(s):  
Prostate Cancer ◽  
Radical Prostatectomy ◽  
Early Detection ◽  
Prostate Specific Antigen ◽  
Specific Antigen ◽  
Ultrasensitive Assay
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