Effect of Cinnamon Bark Oil on Leydig Cell Count and Morphology along with Serum Testosterone Levels in Rats after Cadmium Induced Testicular Toxicity

2021 ◽  
Vol 15 (9) ◽  
pp. 2958-2960
Author(s):  
Aisha Muhammad ◽  
Hafsa Muhammad ◽  
Atika Aslam ◽  
Zaeem Sohail Jafar ◽  
Talha Laique
Keyword(s):  
Cell Count ◽  
Leydig Cell ◽  
Cadmium Chloride ◽  
Serum Testosterone ◽  
Serum Testosterone Level ◽  
Testicular Toxicity ◽  
Cinnamon Bark ◽  
Testosterone Levels ◽  
Cell Counts ◽  
Group B

Cadmium is a toxic heavy metal that causes number of health issues. Purpose: To demonstrate the effect of cinnamon bark oil on Leydig cell count and morphology with measurement of serum testosterone levels. Study Design: Experimental study. Methodology: Healthy male wistar rats (n=30) were taken and divided into 3 groups with n= 10. Group A functioned as control. Cadmium chloride was administered to the rats to induce testicular toxicity in group B. Group C was the treatment group. Animals were euthanized on day 15. Leydig cell count and morphology was done after haematoxylin and eosin staining of the testicular tissue sections. Serum testosterone level was done by ELISA. Statistical analysis: Data analyzed by SPSS 22.0v. Results: Cadmium chloride was observed to significantly reduce leydig cell counts and serum testosterone levels in group B. No significant effect was observed on the morphology of the leydig cells. Cinnamon bark oil significantly improved the leydig cell count. Serum testosterone levels were observed to increase after the cinnamon bark oil administration. Conclusion: This study clearly showed that cinnamon bark oil has protective effect on the cadmium induced testicular toxicity. Key Words: Enzyme Linked Immuno-sorbent Assay, High Density Lipoprotein, Cinnamon Bark Oil and Optical Density.

scholarly journals Inverse Relationship Between Leydig Cell Density and Metastatic Potential of Prostatic Adenocarcinoma

1999 ◽  
Vol 19 (3-4) ◽  
pp. 169-173 ◽  
Author(s):  
W. John Wang ◽  
Y. Albert Yeh ◽  
Paul Stout ◽  
Kang Fan
Keyword(s):  
Cell Count ◽  
Cell Density ◽  
Leydig Cell ◽  
Metastatic Potential ◽  
Prostatic Adenocarcinoma ◽  
Tissue Samples ◽  
Cell Counts ◽  
Group A ◽  
Group B ◽  
Normal Controls

Purpose: Evaluate the relationship between metastatic potential of prostatic adenocarcinoma (PC) and testicular Leydig cell density.Materials and methods: Tissue samples from 111 men, age 52–85, with PC and bilateral orchiectomy were evaluated for Leydig cell density. The patients were divided into two groups: Group A were patients with metastasis (n=36) and Group B were patients without metastasis (n=75). Leydig cell density was determined by direct manual microscopic cell count on the tissue sections. The means of cell counts by four pathologists, expressed as cell/0.78 mm2were used for analysis. The normally distributed data were analyzed by two‐tail Student’s t‐test. Thirty‐eight age‐compatible autopsy cases who died of unrelated causes served as normal controls.Results: The mean of Leydig cell count in group A patients was 14.43 (14.43 ± 1.19 SE). Mean of Group B was 47.05 (47.05 ± 4.05 SE) whereas normal controls displayed a mean of 48.66 (48.66 ± 2.94 SE). Group A was significantly different from control (p<0.00001). Group A and Group B were also significant different (p<0.001) whereas control was not significantly different from Group B (p>0.75).Conclusions: Patients with metastatic adenocarcinoma of prostate, as a group, have a significantly lower Leydig cell density than patients without metastasis or patients without PC in compatible age groups. The hormonal relationship between this observation is however unknown. One possible explanation is that PC subpopulation with metastatic potential may require different level of endogenous androgen or are androgen‐independent.

scholarly journals Melatonin and alpha lipoic acid attenuate lopinavir/ritonavir - induced testicular toxicity in albino rats

2016 ◽  
Vol 62 (2) ◽  
pp. 17-24
Author(s):  
Elias Adikwu ◽  
Brambaifa Nelson ◽  
Wolfe Atuboyedia Obianime
Keyword(s):  
Lipoic Acid ◽  
Serum Testosterone ◽  
Sperm Parameters ◽  
Oral Exposure ◽  
Albino Rats ◽  
Sperm Cells ◽  
Testicular Toxicity ◽  
Alpha Lipoic Acid ◽  
Testosterone Levels ◽  
Oral Doses

The use of lopinavir/ritonavir (LPV/r) could be associated with testicular toxicity as a limiting factor. The present study evaluated the effects of melatonin (MT) and alpha lipoic (ALA) acid on LPV/r–induced testicular toxicity in male albino rats. Eighty five male albino rats used for this study were randomized into 6 groups (A-F). Rats in groups A1 and A2 served as placebo and solvent control and were orally exposed to water and 1% ethanol, respectively. Rats in group B were exposed to oral doses of MT (10 mg kg-1/day), ALA (10 mg kg-1/day) and combined doses of MT and ALA, respectively. Rats in group C were exposed to oral doses of LPV/r (22.9/5.71 - 91.4/22.9 mg kg-1/ day), respectively. Rats in group D-F were exposed to oral doses of MT (10 mg kg-1/day), ALA (10 mg kg-1/day) and combined doses of MT and ALA prior to oral exposure to LPV/r (22.9/5.71 - 91.4/22.9 mg kg-1/day), respectively. At the end of 60 days of exposure to drugs, rats were sacrificed; blood was collected and serum extracted and evaluated for testosterone. Testes were collected and evaluated for sperm parameters. LPV/r-treated rats showed significant (P<0.05) and dose-dependent decreases in sperm count, sperm motility, sperm viability and serum testosterone levels with increases in abnormal sperm cells, debris, and primordial sperm cells when compared to placebo control. However, LPV/r-induced changes in sperm parameters and serum testosterone levels were attenuated in rats pretreated with MT and ALA. The best effects were observed in rats pretreated with combined doses of MT and ALA. Melatonin and alpha lipoic acid have potential to reduce testicular toxicity associated with lopinavir/ritonavir treatment.

Cell function in the bovine mammary gland: a preliminary study on interdependence of healthy and infected udder quarters

2007 ◽  
Vol 74 (2) ◽  
pp. 174-179 ◽  
Author(s):  
Roswitha Merle ◽  
Anke Schröder ◽  
Jörn Hamann
Keyword(s):  
Cell Count ◽  
Cell Function ◽  
Cell Activity ◽  
Polymorphonuclear Leucocytes ◽  
Differential Cell Count ◽  
Immune Reactions ◽  
Cell Counts ◽  
Differential Cell ◽  
Group A ◽  
Group B

Udder defence mechanisms are not completely explained by current mastitis research. The anatomical construction of the udder implies that infection of one udder quarter does not influence the immune status of neighbouring quarters. To test this hypothesis, we compared the immune reactions of individual udder quarters in response to microbial attacks. In the course of immune reactions, polymorphonuclear leucocytes (PMN) release oxygen radicals, which can be determined by chemiluminescence (CL). Milk from 140 udder quarters of 36 cows was analysed for somatic cell count (SCC), differential cell count, viability and CL activity. Quarters with an SCC <100000 cells/ml and free of pathogens were defined as uninfected, all other quarters were categorized as infected. Three groups of cows were classified cytologically: group A (healthy, 11 animals, SCC limit <100000 cells/ml); group B (moderate mastitis, 8 cows, SCC [ges ]100000 and <400000 cells/ml in at least one quarter); and group C (severe mastitis, 17 cows, SCC [ges ]400000 cells/ml in at least one quarter). Infected and uninfected quarters in groups B and C were analysed separately. Viability of PMN leucocytes was significantly (P=0·0012) lower in group A (72·6%) than in healthy quarters of group C (84·0%). Lowering the SCC limit of healthy quarters to <50000 cells/ml (group A: all quarters within the udder) revealed striking differences between samples of groups B and C: in addition to varying differential cell counts and viabilities, CL activity of group B<50 (2929 CL units/million PMN) was markedly lower than that of the other groups (5616 in group A<50 and 6445 CL units/million PMN in group C<50). These results allow the conclusion that the infection of one udder quarter influences the cell activity of neighbouring quarters. When the SCC threshold for healthy quarters was reduced to 50000 cells/ml, greater differences in cell activities were detected between healthy udders and healthy quarters of infected udders.

Impact of Varicocele and Varicocele Surgery on Semen Quality, Erectile Function and Serum Hormone Levels

2018 ◽  
Vol 1 (1) ◽  
pp. 129-136
Author(s):  
Badereddin Mohamad Al-Ali ◽  
Emma Persad ◽  
Andreas Lunacek ◽  
Christof Mrstik ◽  
Eugen Plas
Keyword(s):  
Testosterone Level ◽  
Erectile Function ◽  
Semen Quality ◽  
Semen Analysis ◽  
Serum Testosterone ◽  
T Test ◽  
Serum Testosterone Level ◽  
Testosterone Levels ◽  
Group 2 ◽  
Group 1

Introduction: Many studies suggest that varicoceles are associated with hypogonadism and varicocele repair can increase testosterone levels and improve erectile function.Aim: The aim of this retrospective study was to analyze the impact of varicocele and varicocele surgery on testosterone level, semen quality, and erectile function.Methods: Our study included 265 infertile males with a clinical varicocele. This group was divided into three groups: group 1 (193) patients who did not receive surgery, group 2 (72 patients) who were operated on according to the Palomo procedure and group 3 (28 patients), who acted as a control group without a varicocele. All patients completed the International Index of Erectile Function IIEF-5 (German version) and underwent semen analysis. Serum testosterone, follicle stimulating hormone (FSH), and luteinizing hormone (LH) were measured at inclusion into the study and after surgery.Main outcome measures: Changes in semen quality, erectile function, and serum hormones after surgery.Results: The IIEF-5 scores in groups 1 and 2 were 21.01 ± 2.2; and 21.74 ± 1 respectively, and the resulting t-test for equality of variance was significant (p < 0.0001). Total testosterone level in groups 1 and 2 were 3.16 ± 0.37 and 3 ± 0.01, respectively, and the resulting t-test for equality of variance was significant (p < 0.0001). The results of the semen analysis were better in group 2 (after surgery) (28.6%, p < 0.001) in comparison to group 1. Interestingly, pre-operative serum testosterone levels were lower in patients with later improvement of semen analysis (p = 0.05). Body mass index (p = 0.8), pre-operative serum FSH (p = 0.9), LH (p = 0.2), and nicotine consumption (p = 0.6) were similar in both the group that saw improvement and the group with no change in semen quality.Conclusion: Semen quality improved in 28.6% of patients after varicocele surgery. Erectile dysfunction (ED) improved after varicocele surgery. We report that lower pre-operative serum testosterone level might be a possible indicator for successful surgical outcome.

Anastrazole treatment in breast cancer does not cause androgenic effect

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 10614-10614
Author(s):  
M. Mundia ◽  
M. F. Ali
Keyword(s):  
Breast Cancer ◽  
Postmenopausal Women ◽  
Serum Testosterone ◽  
Serum Testosterone Level ◽  
Common Side Effect ◽  
Breast Cancers ◽  
Testosterone Levels ◽  
Hormone Receptor Positive ◽  
Oncology Practice ◽  
Androgenic Effect

10614 Background: Aromatse Inhibitors are a class of drugs that inhibit tumor growth in hormone receptor positive breast cancers in postmenopausal women. They exert their action by inhibiting the enzyme aromatse involved in the last step in conversion of Androgens to estrogens. They are currently used extensively in both advanced and adjuvant treatments. Methods: Clinical Charts of postmenopausal women, with estrogen receptor positive breast cancer, receiving the non-steroidal aromatse inhibitor, Anastrazole 1 mg daily at a community oncology practice were evaluated for androgenic effect of the drug. Review included presence of clinical Hirsutism and serum testosterone levels. Results: There were 33 women, receiving Anastrazole, 29 for adjuvant therapy, and 4 for metastatic disease. Age 51–77years (median: 63 years), Duration of Anastrazole therapy 6 months to 42 months (median: 18 months), There was no Clinical evidence of hirsutism noted. Serum testosterone levels varied from 9 ng/ml to 58 ng/ml. (Normal range: 14–76 ng/ml) in 32 women. 1 woman had a serum testosterone level of 86 ng/ml with no clinical hirsutism. The most common side effect of Anastrazole was arthralgias, seen in three women. Conclusions: Anastrozole 1 mg daily does not appear to cause any clinical androgenic effect, or elevation of serum testosterone levels. No significant financial relationships to disclose.

Serum testosterone level and overall survival in first-line abiraterone and enzalutamide for metastatic castration-resistant prostate cancer patients.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e17545-e17545
Author(s):  
Maysa Tamara Silveira Vilbert ◽  
Marcelle Goldner Cesca ◽  
Natasha Carvalho Pandolfi ◽  
Vinicius Fernando Calsavara ◽  
Bruno Cezar de Mendonça Uchôa ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Overall Survival ◽  
Testosterone Level ◽  
Serum Testosterone ◽  
Serum Testosterone Level ◽  
Castration Resistant Prostate Cancer ◽  
First Line ◽  
Testosterone Levels ◽  
Castration Resistant ◽  
Low Serum

e17545 Background: Androgen receptor-targeted agents Abiraterone and Enzalutamide (Abi/Ez) prolonged overall survival in metastatic castration resistant prostate cancer (mCRPC). Patients with very-low serum testosterone levels seem to have less benefit from these therapies as well as more aggressive prostate cancer. Methods: A retrospective observational cohort study was conducted to evaluate whether a serum testosterone measured at time of start first-line therapy with Abi/Ez is related to overall survival (OS) and time-to-treatment failure (TTF) in mCRPC patients. Kaplan-Meier survival estimates and Cox-regression models were used for time-to-event analyses. The best cut-off for testosterone was defined using Log-rank statistics (Lausen and Schumacher). X² test and Mann-Whitney U-test were applied to compare categorical and continuous variables, respectively. Logistic regression was used to assess characteristics related to serum testosterone levels. Statistical significance was fixed at 0.05. Results: From May 2012 to February 2017, 100 patients were assessed. Median follow-up was 27.8 months (range 2.23 to 68.26). Pts with a high testosterone level ( > 28.2; n = 20) achieved a significantly higher OS (median 66.0 vs 31.9 mo, testosterone > 28.2 HR: 0.206, 95% CI 0.074 to 0.571, p = 0.002) and TTF (median 30.6 vs 11.8 mo, testosterone > 28.2 HR: 0.408, 95%CI 0.219 to 0.762, p = 0.005) than pts with a low serum testosterone level ( < 28.2; n = 80), regardless of receiving therapy with either Abi (n = 69) or Ez (n = 31). Pts with a higher testosterone level were younger (median 67.7 vs 73.6 years; p = 0.026), had a higher body mass index (BMI) (28.5 vs 25.9, p = 0.023) and a lower PSA at start Abi/Ez (12 vs 26, p = 0.031) than pts with lower values. Age (OR 0.93, 95%CI 0.8 to 0.9, p = 0.021), BMI (OR 1.21, 95%CI 1.1 to 1.4, p = 0.006) and baseline PSA (OR 1.2, 95%CI 1.03 to 1.4, p = 0.020) were significantly associated with testosterone > 28.2. After 4 months of Abi/Ez treatment, PSA decrease > 50% of baseline was seen more frequently in high testosterone levels group than in low testosterone levels pts (90% vs 57.5% of pts, respectively, p = 0.007). Conclusions: Pts with high levels of testosterone ( > 28.2) achieved a better OS and TTF when treated with Abi/Ez in first-line mCRPC than those with low levels. Testosterone can be considered a prognostic and predictive biomarker in this scenario, and could be used in treatment decision for this population.

scholarly journals The Production of Testosterone and Gene Expression in Neonatal Testes of Rats Exposed to Diisoheptyl Phthalate During Pregnancy is Inhibited

2021 ◽  
Vol 12 ◽  
Author(s):  
Bin Ji ◽  
Zina Wen ◽  
Chaobo Ni ◽  
Qiqi Zhu ◽  
Yiyan Wang ◽  
...  
Keyword(s):  
Leydig Cell ◽  
Corn Oil ◽  
Serum Testosterone ◽  
Male Rats ◽  
Sprague Dawley ◽  
Testosterone Levels ◽  
Protein Levels ◽  
Gestational Exposure ◽  
Phthalate Plasticizer ◽  
Neonatal Testis

Background: Diisoheptyl phthalate (DIHP) is a phthalate plasticizer, which is a branched phthalate. Here, we reported the effects of gestational exposure to DIHP on testis development in male rats.Methods: Pregnant Sprague-Dawley rats were orally fed with vehicle (corn oil, control) or DIHP (10, 100, 500, and 1,000 mg/kg) from gestational day (GD) 12–21. At GD21, serum testosterone levels, the number and distribution of fetal Leydig cells, and testicular mRNA and protein levels, the incidence of multinucleated gonocytes, and focal testicular hypoplasia in the neonatal testis were measured.Results: DIHP increased the fetal Leydig cell cluster size and decreased the fetal Leydig cell size with LOAEL of 10 mg/kg. DIHP did not affect the fetal Leydig cell number. DIHP significantly lowered serum testosterone levels, down-regulated the expression of steroidogenesis-related genes (Lhcgr, Star, Cyp11a1, Hsd3b1, Cyp17a1, and Hsd17b3) and testis descent-related gene (Insl3) as well as protein levels of cholesterol side-chain cleavage enzyme (CYP11A1) and insulin-like 3 (INSL3). DIHP dose-dependently increased the percentage of multinucleated gonocytes with the low observed adverse-effect level (LOAEL) of 100 mg/kg. DIHP induced focal testicular hypoplasia.Conclusion: Gestational exposure to DIHP causes testis dysgenesis in rats.

Evaluation of blood oxidant/antioxidant changes and testicular toxicity after subacute exposure to cadmium in albino rats: Therapeutic effect of Nigella sativa seed extracts

2020 ◽  
Vol 23 ◽  
Author(s):  
Ikenna Kingsley Uchendu ◽  
Henshaw Uchechi Okoroiwu
Keyword(s):  
Oxidative Stress ◽  
Testosterone Level ◽  
Nigella Sativa ◽  
Serum Testosterone ◽  
Seed Extract ◽  
Serum Testosterone Level ◽  
Albino Rats ◽  
Testicular Toxicity ◽  
Oral Group ◽  
Testicular Injury

Aim and Objective: Cells and tissues of the body are prone to oxidative damage as a result of increased level of reactive oxygen species and nitrogen radical beyond the detoxifying ability of the endogenous antioxidant system. This study aimed to evaluate the ameliorative effect of methanolic extracts of Nigella sativa (MENS) against cadmium-induced blood oxidative stress and testicular toxicity in albino rats. Materials and Methods: Twenty five (25) male albino rats, weighing (200±20g), were randomly grouped into five groups (A-E). Group B (Negative Control) received intraperitoneal administration of cadmium chloride (CdCl2, 5mg/kg) only, group C received CdCl2 and low dose MENS (300mg/kg, oral), group D received CdCl2 and high dose MENS (600mg/kg, oral), group E (Positive control) received CdCl2 and Vitamin C (200mg/kg, oral), for 14 days. No treatment was administered to group A (Normal control). The oxidative state of the blood was assessed by measuring the blood levels or activities of MDA, CAT, GSH and SOD; while testicular injury was assessed by measuring serum testosterone level using ELISA. The testes were harvested for histopathological examination. Results: The results showed that cadmium induced a marked elevation in the level of MDA, and a decrease in SOD, CAT and GSH levels or activities (p<0.05 or p<0.01); but no significant alteration in the serum testosterone level (p>0.05); Histopathological studies on the testes showed that cadmium significantly induced testicular injury, which was however ameliorated by the seed extract of N.sativa. Conclusion: We conclude that N.sativa seed extract is potentially testiculoprotective and attenuates oxidative stress against harmful chemical toxins such as cadmium.

Percutaneous orchiectomy: A noninvasive method of castration beyond percutaneous testicular sclerosis

2009 ◽  
Vol 27 (15_suppl) ◽  
pp. e16153-e16153
Author(s):  
E. C. Nepomuceno ◽  
F. Quintiliano ◽  
F. S. Lima ◽  
E. Café ◽  
P. Boente
Keyword(s):  
Prostate Cancer ◽  
Serum Testosterone ◽  
Serum Levels ◽  
Serum Testosterone Level ◽  
Control Group ◽  
Ischemic Lesion ◽  
Alcohol Injection ◽  
Percutaneous Injection ◽  
Testosterone Levels ◽  
Percutaneous Administration

e16153 Background: Surgical castration is the gold standard for hormonal deprivation in metastatic prostate cancer, nevertheless this simple procedure may involve on psychological consequences. According to many studies, it's possible to achieve ischemic lesion in liver tissue beyond sclerosants agents (like alcohol or glycerol), however there are very few reports about the effects of such agents in testicles. These study objectives evaluating histological and morphological characteristics of rat testicles submitted to percutaneous administration of sclerosants agents and also, to compare serum testosterone levels between rats submitted to a surgical orchiectomy or percutaneous injection. Methods: Twenty four rats have been shared in four groups with eight animals each. In group O, rats were submitted to bilateral orchiectomy. In the other groups, rats were submitted to percutaneous administration of a sclerosant agent and orquiectomy after thirty days as follows: Group A, Alcohol injection; Group G - Glycerol; Group S - Saline solution (control group). Serum testosterone level was measured after 15 and 30 days in each animal. Results: There is no complication or death in this series. Rats of groups A and G comparing to control group (group S) had smaller testicular weight (0,8±0,1g; 1±0,2g versus 3,15±0,1g p<0,0000001) and smaller testicular volume (0,16±0,05mL; 0,23±0,11mL versus 2,38±0,05mL p<0,0000001). Testosterone serum levels were as similar in groups A and G (sclerosis) as in group O (orchiectomy). After 15 days testosterone levels were A=2,9±0,74 ng\dL; G=2,8±0,39 ng\dL versus O=2,91±1,46ng\dL p=0,99; and after 30 days were A=2,58±0,4ng\mL, G=2,78±0,3ng\mL versus O=2,7±0,95ng\mL p=0,895). Histological findings show extensive necrosis beyond macrophagic infiltration and no Leydig cells visualized.There is no significantly statistical difference between Alcohol and Glycerol groups. Conclusions: Percutaneous administration of alcohol or glycerol in rats testicles causes atrophy and reduces testosterone serum levels like it occurs after surgical castration. More studies are necessary to evaluate if this minimally invasive procedure may be an alternative to surgical orchiectomy in advanced prostate cancer. No significant financial relationships to disclose.

scholarly journals Defining a new testosterone threshold for medical castration: Results from a prospective cohort series

2013 ◽  
Vol 7 (5-6) ◽  
pp. 263 ◽  
Author(s):  
Shawn Dason ◽  
Christopher B. Allard ◽  
Justin Tong ◽  
Bobby Shayegan
Keyword(s):  
Prospective Cohort ◽  
Specific Antigen ◽  
Progression Free Survival ◽  
Serum Testosterone ◽  
Serum Testosterone Level ◽  
Testosterone Levels ◽  
Tertiary Centre ◽  
Kaplan Meier ◽  
Castrate Resistant Prostate Cancer ◽  
Castrate Resistant

Background: We seek to determine if testosterone levels below the accepted castration threshold (50 ng/dL) have an impact on time to progression to castrate-resistant prostate cancer (CRPC).Methods: This is a prospective cohort series of patients undergoing androgen deprivation therapy (ADT) with luteinizing hormone-releasing hormone agonist or antagonist at a tertiary centre from 2006 to 2011. Serum testosterone level was assessed every 3 months. Patients with any testosterone >50 ng/dL were excluded. Patients were stratified into groups based on those achieving mean testosterone levels <20 ng/dL and <32 ng/dL. Progression to CRPC was assessed with the Kaplan-Meier method and compared with the log-rank test.Results: A total of 32 patients were included in this study. Mean patient follow-up was 25.7 months. Patients with a 9-month serum testosterone <32 ng/dL had a significantly increased time to CRPC compared to patients with testosterone 32 to 50 ng/dL (p = 0.001, median progression-free survival (PFS) 33.1 months [<32 ng/dL] vs. 12.5 months [>32 ng/dL]). Patients with first year mean testosterone <32 ng/dL also had a significantly increased time to CRPC compared to 32 to 50 ng/dL (p = 0.05, median PFS 33.1 months [<32 ng/dL] vs. 12.5 months [32-50 ng/dL]). A testosterone <20 ng/dL compared to 20 to 50 ng/dL did not significantly predict with time to CRPC.Conclusion: This study supports a lower testosterone threshold to define optimal medical castration (T <32 ng/dL) than the previously accepted standard of 50 ng/dL. Testosterone levels during ADT serve as an early predictor of disease progression and thus should be measured in conjunction with prostate-specific antigen.

Sign in / Sign up

Export Citation Format

Share Document