"More men die with prostate cancer than because of it" - an old adage that still holds true in the 21st century

Comparative efficacy of radical prostatectomy and radiotherapy in the treatment of high-risk prostate cancer

BACKGROUND

Both radical prostatectomy and radiation therapy are effective in controlling the condition of patients with hormone-resistant prostate cancer (HRPCa). However, there is limited research on the prognosis and quality of life of HRPCa patients after different treatment modalities.

OBJECTIVE

To explore the efficacy of radical prostatectomy (RP) and radiotherapy (RT), when treating high-risk prostate cancer (HRPCa).

METHODS

Overall 103 HRPCa patients were included and were divided into RP group and RT group according to different treatment methods. The propensity score matching method (PSM) was used to balance the baseline data of the two groups and match 34 patients in each group. The prognosis, quality of life, and basic efficacy of patients were compared.

RESULTS

After intervention, the disease-free survival rate of the RT group was higher than that of the RP group (79.41% vs. 55.88%, p= 0.038). Quality of life scores between the two treatment methods had no difference before intervention (p> 0.05), but higher in RT group than that of the RP group after intervention (p< 0.05). After treatment, there was no statistically significant difference in total effective rate of treatment between two groups (44.12% vs. 58.82%, p> 0.05), but the disease control rate was significantly higher in RT group (94.12% vs. 76.47%, p= 0.040).

CONCLUSION

Radical radiotherapy is effective in the clinical treatment of HRPCa patients, with a higher disease-free survival rate and improved quality of life after treatment, and is worth promoting.

Association between sociodemographic and clinical features, health behaviors, and health literacy of patients with prostate cancer and prostate cancer prognostic stage

Patient characteristics may influence access and acceptance of Prostate Specific Antigen test, and therefore, the timing of prostate cancer (PCa) diagnosis. A group of 361 patients from a cohort (n = 451) diagnosed with PCa in 2018-2020 at the Portuguese Institute of Oncology of Porto was evaluated before treatment, using a structured interview, the Medical Term Recognition Test, and the EORTC Quality of Life Questionnaire QLQ-PR25. PCa prognostic stages (I, II, III, IV) were attributed according to the American Joint Committee on Cancer eighth edition. Multinomial logistic regression was used to compute the odds ratio and 95% confidence interval (OR [95% CI]), considering PCa stage II, the most frequent, as reference. Older age (OR = 4.21 [2.24-7.93]), living outside the Porto Metropolitan Area while having low income (OR = 6.25 [1.53-25.62]), and erectile dysfunction (OR = 2.22 [0.99-4.99]) were associated with stage III, while urination during the night (OR = 3.02 [1.42-6.41]) was associated with stage IV. Urine leakage was less frequent in stage III (OR = 0.23 [0.08-0.68]), and living with a partner (OR = 0.41 [0.19-0.88]) and family history of cancer (OR = 0.25 [0.07-0.86]) in stage IV. Health literacy was not associated with PCa stage but lower education was less frequent in stage I (OR = 0.27 [0.11-0.69]). Patient sociodemographic and clinical characteristics should be considered as targets to improve PCa early detection and prognosis.

PLA inhibits TNF-α-induced PANoptosis of prostate cancer cells through metabolic reprogramming

Previous studies have shown that phenyllactic acid (alpha-Hydroxyhydrocinnamic acid, 2-Hydroxy-3-phenylpropionic acid, PLA), a type of organic acid metabolite, has excellent diagnostic efficacy when used to differentiate between prostate cancer, benign prostatic hyperplasia, and prostatitis. This research aims to explore the molecular mechanism by which PLA influences the PANoptosis of prostate cancer (PCa) cell lines. First, we found that PLA was detected in all prostate cancer cell lines (PC-3, PC-3 M, DU145, LNCAP). Further experiments showed that the addition of PLA to prostate cancer cells could promote ATP generation, enhance cysteine desulfurase (NFS1) expression, and reduce tumor necrosis factor alpha (TNF-α) levels, thereby inhibiting apoptosis in prostate cancer cells. Notably, overexpression of NFS1 can inhibit the binding of TNF-α to serpin mRNA binding protein 1 (SERBP1), suggesting that NFS1 competes with TNF-α for binding to SERBP1. Knockdown of SERBP1 significantly reduced the level of small ubiquity-related modifier (SUMO) modification of TNF-α. This suggests that NFS1 reduces the SUMO modification of TNF-α by competing with SERBP1, thereby reducing the expression and stability of TNF-α and ultimately inhibiting apoptosis in prostate cancer cell lines. In conclusion, PLA inhibits TNF-α induced panapoptosis of prostate cancer cells through metabolic reprogramming, providing a new idea for targeted treatment of prostate cancer.

Prostate cancer among Saudis: a registry review

Background

Policy makers in Saudi Arabia greatly rely on published studies to make major public health decisions. Prostate cancer (PCa) studies in Saudi Arabia are either outdated or limited to local regions.

Aim

The authors aim to analyze the Saudi Cancer Registry to determine the incidence of PCa across all regions of the Kingdom and the risk factors of poor prognosis in the population.

Methods

Patients diagnosed with primary PCa from 1 January 2008 to 31 December 2017 were included in the study from the Saudi Cancer Registry. Incidence rates and risk factors for poor survival were calculated.

Results

A total of 3607 PCa patients were retrieved. PCa incidence rates ranged from 0.2 to 1.4 per 100 000. Most of the patients were aged 60 and older (86.5%; n=3120), married (97%; n=3497) and lived in the central region (38.1%; n=1375). The mean age at diagnosis was 71.1 (10.8) years. Over half of all tumors were poorly differentiated (64.2%; n=2317), and localized (60.4%; n=2180). The all-time metastasis rate reached 31.4% (n=1131). The lowest mean survival was in those with distant metastasis (P=0.039). Age groups, marital status, tumor morphology, place of residency, and grade were not proven to significantly influence survival.

Conclusion

The high metastasis rate and evidence of a greater incidence of newly diagnosed metastatic PCa indicate that the idea of select screening for certain high-risk populations is not farfetched. The authors encourage the promotion of awareness regarding PCa risk factors and screening to optimize prognosis and minimize late presentations and high metastasis rates.

Determinants of Mortality among Patients Managed for Prostate Cancer: Experience from Korle Bu Teaching Hospital in Ghana

Background

Over the past two decades, diagnosis and treatment approaches for men with prostate cancer have changed dramatically, with improvements in established prostate cancer treatments and new treatment strategies. However, In sub-Saharan African countries, there is a paucity of data on the characteristics and treatment of men who eventually die from Prostate Cancer (PCa). We used the clinical records of patients who died from PCa to describe the natural history and treatment PCa patients in Ghana.

Methods

From 2013 to 2022, the medical records of 234 men who died of PCa at a tertiary hospital in Ghana were prospectively collected and retrospectively analysed.

Results

The mean age at death was 71.6 years, and the median was 72.5 years. 51.3% died within 24 months of diagnosis, 23.0% between 2 and 5 years after diagnosis, and a quarter survived for more than 5 years. Over 80% presented with advanced disease, characterised by high prostate-specific antigen (PSA) levels, a high T stage on DRE, and evidence of metastasis. 43.6% presented with haemoglobin levels below 10ng/dl at diagnosis. These patients had the worst outcome, with 73% dying less than 2 years after diagnosis. The 5-yr survival rate of patients who presented with metastatic disease was 21.2 %. Over 80% were treated with bilateral total orchidectomy, with less than 10% receiving treatment intensification with the newer generation antiandrogens or chemotherapy.

Conclusion

Our analysis shows that patients who die from PCa have aggressive disease, are diagnosed at an advanced stage, and are relatively younger than in Western countries. There is also a slow uptake of newer treatment strategies for metastatic prostate cancer. These results confirm literature suggesting that blacks have poorer outcomes due to the disease's aggressive nature. Further research is needed to understand the mechanisms and also define appropriate management for metastatic PCa in sub-Saharan Africa.

Emerging Developments in ETS-Positive Prostate Cancer Therapy

Prostate cancer is a global health concern, which has a low survival rate in its advanced stages. Even though second-generation androgen receptor-axis inhibitors serve as the mainstay treatment options, utmost of the metastatic cases progress into castration-resistant prostate cancer after their initial treatment response with poor prognostic outcomes. Hence, there is a dire need to develop effective inhibitors that aim the causal oncogenes tangled in the prostate cancer initiation and progression. Molecular-targeted therapy against E-26 transformation-specific (ETS) transcription factors, particularly ETS-related gene, has gained wide attention as a potential treatment strategy. ETS rearrangements with the male hormone responsive transmembrane protease serine 2 promoter defines a significant number of prostate cancer cases and is responsible for cancer initiation and progression. Notably, inhibition of ETS activity has shown to reduce tumorigenesis, thus highlighting its potential as a clinical therapeutic target. In this review, we recapitulate the various targeted drug approaches, including small molecules, peptidomimetics, nucleic acids, and many others, aimed to suppress ETS activity. Several inhibitors have demonstrated ERG antagonist activity in prostate cancer, but further investigations into their molecular mechanisms and impacts on nontumor ETS-containing tissues is warranted.

Are menopause, aging and prostate cancer diseases?

There is no doubt that prostate cancer is a disease. Then, according to hyperfunction theory, menopause is also a disease. Like all age-related diseases, it is a natural process, but is also purely harmful, aimless and unintended by nature. But exactly because these diseases (menopause, prostate enlargement, obesity, atherosclerosis, hypertension, diabetes, presbyopia and thousands of others) are partially quasi-programmed, they can be delayed by slowing aging. Is aging a disease? Aging is a quasi-programmed disease that is partially treatable by rapamycin. On the other hand, aging is an abstraction, a sum of all quasi-programmed diseases and processes. In analogy, the zoo consists of animals and does not exist without animals, but the zoo is not an animal.

The Tumor Suppressor Roles and Mechanisms of MiR-491 in Human Cancers

MicroRNAs (miRNAs) are short non-coding RNAs that bind to the 3' untranslated region (3'' UTR) of target mRNAs to control gene expression post-transcriptionally. Recent indications have highlighted their important roles in a variety of pathophysiological conditions as well as human malignancies. Dysregulated miRNAs act as tumor suppressor genes or oncogenes in a variety of cancers. MiR-491 has been shown to have a major effect on tumorigenesis in multiple malignancies through binding to specific genes and signaling cascades, thereby preventing cancer progression. This review provides an overview of miR-491 expression in regulatory mechanisms and biological procedures of tumor cells, as well as the prospective possible treatment effects of various types of human cancers.

Declining Cancer Incidence in the Elderly: Decreasing Diagnostic Intensity or Biology?

BACKGROUND

Advanced age is a consistent risk factor for cancer; nonetheless, cancer incidence typically declines after age 75-85 for most solid tumors.

METHODS

To delineate the true cancer age-incidence pattern, we performed a population-based cohort study using Swedish Cancer Register data from 1970-2014 on nine common, adult (age 20-99) cancers categorized as requiring high (pancreatic, lung, non-meningioma brain), medium (anorectal, urinary bladder, non-Hodgkin lymphoma), and low (melanoma skin, breast, prostate) diagnostic invasiveness based on the perceived risk of complications associated with histopathologic verification. We estimated the reported incidence and the proportion of autopsy-detected cancers by age but also projected a corrected incidence assuming the same proportion of unexpected cancer findings if all deaths underwent autopsy.

RESULTS

The registered cancer incidence dropped after peak age around 65-84, with the exception of melanoma skin. This pattern was attenuated when exploring the proportion of incident, unexpected cancer findings in autopsy material by age. The "total" cancer incidence, reported plus projected incident autopsy cases, increased monotonously with age.

CONCLUSIONS

The long-established cancer incidence decline in elderly is most probably an artifact due to reduced diagnostic intensity.

IMPACT

Biological drivers to the cancer incidence decline in elderly are unlikely and resources are better allocated to prepare for the anticipated cancer pandemic when numbers of healthy elderly increase. Cancer alarm symptoms in elderly fit for cancer therapy should be investigated promptly and clinical cancer trials focus to also include elderly to set updated standards for cancer therapy in the dominating age group.