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https://www.readbyqxmd.com/read/28944853/kisspeptin-inhibits-cancer-growth-and-metastasis-via-activation-of-eif2ak2
#1
Tae-Hun Kim, Sung-Gook Cho
Kisspeptin is a protein encoded by the KISS1 gene, which has been reported to suppress the metastatic capabilities of various types of cancer cells, through the activation of its G‑protein coupled receptor GPR54. However, the molecular mechanisms underlying the involvement of kisspeptin‑mediated signaling in the inhibition of cancer cell migration and invasion have yet to be elucidated. The present in vitro cell proliferation, migration and invasion assays and in vivo experimental metastasis studies demonstrated that kisspeptin‑induced eukaryotic translation initiation factor 2α kinase 2 (EIF2AK2) activation suppressed the metastatic capabilities of several types of cancer cells...
September 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944626/caveolin-1-secreted-from-adipose-tissues-and-adipocytes-functions-as-an-adipogenesis-enhancer
#2
Chia-Chu Chang, Chen-Yu Chen, Hui-Chin Wen, Chih-Yang Huang, Ming-Shiu Hung, Hsi-Chi Lu, Woan-Ling Chen, Chung-Ho Chang
OBJECTIVE: Caveolin-1 (Cav-1) is expressed abundantly in adipose tissue and involved in many physiological processes. While Cav-1 has been reported to be secreted in pancreatic acinar cells and LNCaP prostate cancer cells, its secretion from adipose tissue awaits investigation. METHODS: Cav-1 secretion from 3T3-L1 adipocytes and fat tissues from normal chow diet- and high-fat diet (HFD)-fed mice was measured. Functions and uptake of secreted Cav-1 proteins were assessed by adding Cav-1 back to preadipocytes and LNCaP cells...
September 25, 2017: Obesity
https://www.readbyqxmd.com/read/28944496/the-unidirectional-hypoxia-activated-prodrug-oct1002-inhibits-growth-and-vascular-development-in-castrate-resistant-prostate-tumors
#3
Heather Nesbitt, Jenny Worthington, Rachel J Errington, Laurence H Patterson, Paul J Smith, Stephanie R McKeown, Declan J McKenna
BACKGROUND: OCT1002 is a unidirectional hypoxia-activated prodrug (uHAP) OCT1002 that can target hypoxic tumor cells. Hypoxia is a common feature in prostate tumors and is known to drive disease progression and metastasis. It is, therefore, a rational therapeutic strategy to directly target hypoxic tumor cells in an attempt to improve treatment for this disease. Here we tested OCT1002 alone and in combination with standard-of-care agents in hypoxic models of castrate-resistant prostate cancer (CRPC)...
September 24, 2017: Prostate
https://www.readbyqxmd.com/read/28944218/diabetes-mitigates-the-role-of-memory-complaint-in-predicting-dementia-risk-results-from-the-prevention-of-alzheimer-s-disease-with-vitamin-e-and-selenium-study
#4
X Zhang, F A Schmitt, A M Caban-Holt, X Ding, R J Kryscio, E Abner
BACKGROUND: Subjective memory complaints (SMCs) are associated with increased risk of dementia in older adults, but the role of comorbidities in modifying this risk is unknown. OBJECTIVES: To assess whether comorbidities modify estimated dementia risk based on SMCs. DESIGN: The Prevention of Alzheimer's Disease with Vitamin E and Selenium Study (PREADVISE) was designed as an ancillary study to the Selenium and Vitamin E Cancer Prevention Trial (SELECT), a randomized, multi-center prostate cancer prevention trial with sites in the Unites States, Puerto Rico, and Canada...
2017: Journal of Prevention of Alzheimer's Disease
https://www.readbyqxmd.com/read/28944088/loss-of-the-vitamin-d-receptor-in-human-breast-and-prostate-cancers-strongly-induces-cell-apoptosis-through-downregulation-of-wnt-%C3%AE-catenin-signaling
#5
Yu Zheng, Trupti Trivedi, Ruby Cy Lin, Colette Fong-Yee, Rick Nolte, Jeline Manibo, Yunzhao Chen, Musharraf Hossain, Konstantin Horas, Colin Dunstan, Hong Zhou, Markus J Seibel
Vitamin D co-regulates cell proliferation, differentiation and apoptosis in numerous tissues, including cancers. The known anti-proliferative and pro-apoptotic actions of the active metabolite of vitamin D, 1,25-dihydroxy-vitamin D [1,25(OH)2D] are mediated through binding to the vitamin D receptor (VDR). Here, we report on the unexpected finding that stable knockdown of VDR expression in the human breast and prostate cancer cell lines, MDA-MB-231 and PC3, strongly induces cell apoptosis and inhibits cell proliferation in vitro...
2017: Bone Research
https://www.readbyqxmd.com/read/28943928/recq-helicase-blm-regulates-prostate-cancer-cell-proliferation-and-apoptosis
#6
Xiaosong Qian, Sujuan Feng, Dawei Xie, Dalin Feng, Yihang Jiang, Xiaodong Zhang
Prostate cancer (PCa) is a common malignant tumor and the second leading cause of morbidity and mortality in men worldwide. Considering the prevalence and effects of PCa in males, an understanding of the molecular mechanisms underlying PCa tumorigenesis are essential and may provide novel therapeutic strategies for treating PCa. Bloom syndrome protein (BLM) is a member of the RecQ helicase family. The major function of BLM is to uncoil the double-stranded DNA structure. It has previously been demonstrated that BLM acts as a 'genome caretaker', and dysregulation of BLM function has been implicated in the development of multiple tumor types; however, its potential for inducing PCa tumorigenesis remains undetermined...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943913/relationship-between-the-expression-of-cd133-hif-1%C3%AE-vegf-and-the-proliferation-and-apoptosis-in-hypoxic-human-prostate-cancer-cells
#7
Lingyun Liu, Zuowen Liang, Kaimin Guo, Hongliang Wang
This study measured the levels of expression of CD133, hypoxia-inducible factor (HIF)-1α and vascular endothelial growth factor (VEGF) in human prostate cancer cells grown under hypoxic and non-hypoxic conditions to compare the values to resulting amounts of proliferation and apoptosis in the cells. Human prostate cancer cell line LNCaP cells were routinely thawed, cultured and passaged. Actively growing cells were divided into batches. Cells in the control group were grown under 5% CO2 + 20% O2, and those in the hypoxia group were grown under 5% CO2 + 1% O2...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943900/influence-of-chronic-inflammation-on-bcl-2-and-pcna-expression-in-prostate-needle-biopsy-specimens
#8
Michael Glover, Shardul Soni, Qinghu Ren, Gregory T Maclennan, Pingfu Fu, Sanjay Gupta
The association between inflammation and cancer has been established in certain forms of human malignancies; however, its role in prostate cancer remains unclear. The present study investigates a possible association between chronic inflammation and the development of epithelial neoplasia in the prostate. Needle biopsy specimens were obtained from patients with serum prostate-specific antigen levels >4 ng/ml, evaluated for morphological findings, and immunostained for Bcl-2 and proliferating cell nuclear antigen (PCNA)...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943529/quisqualis-indica-improves-benign-prostatic-hyperplasia-by-regulating-prostate-cell-proliferation-and-apoptosis
#9
Charith Ub Wijerathne, Hee-Seon Park, Hye-Yun Jeong, Ji-Won Song, Og-Sung Moon, Young-Won Seo, Young-Suk Won, Hwa-Young Son, Jong-Hwan Lim, Sung-Hum Yeon, Hyo-Jung Kwun
Quisqualis indica (QI) has been used for treating disorders such as stomach pain, constipation, and digestion problem. This study was aimed to evaluate the therapeutic efficacy of QI extract on treating benign prostatic hyperplasia (BPH) in LNCaP human prostate cancer cell line and a testosterone-induced BPH rat model. LNCaP cells were treated with QI plus testosterone propionate (TP), and androgen receptor (AR) and prostate specific antigen (PSA) expression levels were assessed by Western blotting. To induce BPH, the rats were subjected to a daily subcutaneous injection of TP (3 mg/kg) for 4 wk...
September 22, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28943466/in-vitro-cytotoxicity-of-l-amino-acid-oxidase-from-the-venom-of-crotalus-mitchellii-pyrrhus
#10
Kok Keong Tan, Siok Ghee Ler, Jayantha Gunaratne, Boon Huat Bay, Gopalakrishnakone Ponnampalam
L-amino acid oxidase isolated from Crotalus mitchellii pyrrhus (Cmp-LAAO) exhibited cytotoxicity against LNCaP prostate adenocarcinoma cells. The viability of LNCaP cells decreased in a concentration- and time-dependent manner upon administration of Cmp-LAAO. Cmp-LAAO induced apoptosis as evidenced by AnnexinV/PI staining using flow cytometry. An increase in caspase-9 and caspase-3 activity were also observed. The damaging effect of LAAO appears to be due to its enzymatic activity, that produces hydrogen peroxide which can then induce oxidative stress within the cells...
September 21, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28943330/comparison-of-surgery-and-radiation-as-local-treatments-in-the-risk-of-locoregional-complications-in-men-subsequently-dying-from-prostate-cancer
#11
Jason Hu, Armen G Aprikian, Fabio L Cury, Marie Vanhuyse, Ahmed S Zakaria, Patrick O Richard, Sylvie Perreault, Alice Dragomir
INTRODUCTION: Late locoregional complications in prostate cancer (PCa) affect quality of life and require medical interventions. Our objective was to compare late locoregional complications in men dying of castration-resistant PCa (CRPC) who previously received external-beam radiotherapy (EBRT) to radical prostatectomy (RP). No group without previous primary local treatment was included. PATIENTS AND METHODS: The cohort consists of CRPC patients who died between 2001 and 2013 and who underwent previous EBRT or RP...
September 5, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28943214/down-regulation-of-mir-605-promotes-the-proliferation-and-invasion-of-prostate-cancer-cells-by-up-regulating-en2
#12
Yao-Jun Zhou, Hong-Qiong Yang, Wei Xia, Li Cui, Ren-Fang Xu, Hao Lu, Zhong Xue, Bo Zhang, Zi-Nong Tian, Yun-Jie Cao, Zhao-Yu Xing, Shuai Yin, Xiao-Zhou He
AIMS: MicroRNA served as inhibitor for gene expression in various cancers. This study aimed to investigate the role of miR-605 and EN2 in prostate cancer (PCa). MATERIALS AND METHODS: In this research, the expression of miR-605 and EN2 protein in PCa tissues and cells were determined by qRT-PCR and western blot, respectively. The cell proliferation was measured by Cell Counting Kit-8 (CCK-8) and the tumor cell invasion assay was accomplished with transwell system...
September 21, 2017: Life Sciences
https://www.readbyqxmd.com/read/28943200/determinants-of-the-overuse-of-imaging-in-low-risk-prostate-cancer-a-systematic-review
#13
REVIEW
Allison H Oakes, Ritu Sharma, Madeline Jackson, Jodi B Segal
BACKGROUND: The overuse of radiologic services, where imaging tests are provided in circumstances where the propensity for harm exceeds the propensity for benefit, comprises a risk to patient safety and a burden on health care systems. Advanced imaging in the staging of low-risk prostate cancer is considered an overused procedure by many professional societies, yet the determinants that drive this phenomenon are not fully appreciated. METHODS: We systematically searched published literature within MEDLINE and Embase from January 1998 to March 2017...
September 21, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28943096/the-incidence-rate-of-cancer-in-patients-with-schizophrenia-a-meta-analysis-of-cohort-studies
#14
REVIEW
Hailong Li, Jiasi Li, Xiya Yu, Huiwen Zheng, Xu Sun, Yue Lu, Yanbo Zhang, Chunbo Li, Xiaoying Bi
BACKGROUND: Numerous studies report that cancer prevalence in patients with schizophrenia might be different from the general population, but findings remain controversial. AIM: Our updated meta-analysis of cohort studies aims to analyze the data from cohort studies concerning the incidence risk of overall cancer and some site-specific cancers in patients with schizophrenia. METHOD: We performed a systemic search through electronic databases...
September 21, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28943074/local-protocol-variations-for-image-guided-radiation-therapy-in-the-multicenter-dutch-hypofractionation-hypro-trial-impact-of-rectal-balloon-and-mri-delineation-on-anorectal-dose-and-gastrointestinal-toxicity-levels
#15
R C Wortel, W D Heemsbergen, R J Smeenk, M G Witte, A D Krol, F J Pos, L Incrocci
PURPOSE: The phase 3 HYpofractionated irradiation for PROstate cancer (HYPRO) trial randomized patients with intermediate- to high-risk localized prostate cancer to conventionally fractionated (78 Gy in 39 fractions) or hypofractionated (64.6 Gy in 19 fractions) radiation therapy. Differences in techniques and treatment protocols were present between participating centers. This study aimed to compare dose parameters and patient-reported gastrointestinal symptoms between these centers...
August 3, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28942009/comparison-of-11-active-surveillance-protocols-in-contemporary-european-men-treated-with-radical-prostatectomy
#16
Sami-Ramzi Leyh-Bannurah, Pierre I Karakiewicz, Paolo Dell'Oglio, Alberto Briganti, Jonas Schiffmann, Raisa S Pompe, Guido Sauter, Thorsten Schlomm, Hans Heinzer, Hartwig Huland, Markus Graefen, Lars Budäus
BACKGROUND: The aim of this study was to compare 11 active surveillance (AS) protocols in contemporary European men treated with radical prostatectomy (RP) at the Martini-Clinic Prostate Cancer Center. PATIENTS AND METHODS: Analyzed were 3498 RP patients, from 2005 to 2016, who underwent ≥ 10 core biopsies and fulfilled at least 1 of 11 examined AS entry definitions. We tested proportions of AS eligibility, ineligibility, presence of primary Gleason 4/5, upstage, and combinations thereof at RP, as well as 5-year biochemical recurrence-free survival (BFS)...
August 31, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28941963/effects-of-androgen-deprivation-therapy-on-pain-perception-quality-of-life-and-depression-in-men-with-prostate-cancer
#17
Thiago Gagliano-Jucá, Thomas G Travison, Paul L Nguyen, Philip W Kantoff, Mary-Ellen Taplin, Adam S Kibel, Robert Manley, Kathleen Hally, Richelle Bearup, Yusnie M Beleva, Grace Huang, Robert R Edwards, Shehzad Basaria
CONTEXT: Previous animal and human research suggests that testosterone has anti-nociceptive properties. Castration in male rodents increases pain perception which is reversed by testosterone replacement. Pain perception also improves in hypogonadal men with testosterone therapy. However, it remains unclear whether androgen deprivation therapy (ADT) in men with prostate cancer (PCa) is associated with an increase in pain perception. METHODS: Thirty-seven men with PCa about to undergo ADT with leuprolide acetate (ADT group) were followed prospectively for 6 months to evaluate changes in clinical and experimental pain...
September 20, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28941944/calling-order-to-chaos-treatment-decision-making-in-metastatic-castrate-resistant-prostate-cancer
#18
Zaina P Qureshi, Oliver Sartor, Charles L Bennett
No abstract text is available yet for this article.
September 20, 2017: Urology
https://www.readbyqxmd.com/read/28941943/author-response-on-the-manuscript-titled-calling-order-to-chaos-treatment-decision-making-in-metastatic-castrate-resistant-prostate-cancer-url-d-17-01121
#19
Neal Shore, Axel Heidenreich, Fred Saad
No abstract text is available yet for this article.
September 20, 2017: Urology
https://www.readbyqxmd.com/read/28941925/dynamic-patterns-of-testosterone-levels-within-individuals-and-risk-of-prostate-cancer-among-hypogonadal-men-a-longitudinal-study
#20
Xiaohui Xu, Xiao Zhang, Yan Zhong, Farid Saad, Maria J Perez-Patron, Karim Haider, Ahmad Haider
PURPOSE: We proposed to investigate whether dynamic patterns of testosterone (T) levels contribute to risk of prostate cancer (PCa). MATERIALS AND METHODS: We used data from 376 untreated hypogonadal men (T ≤ 12.1 nmol/L) recruited from a urology office in Germany. Study entry age was used as a surrogate for age at first detecting T below 12.1 nmol/L; three indicators, the coefficient of variation (CV), the ratio of the largest decline relative to the mean (MMDRM), and the median of the maximum declines (MMD) were derived to measure the dynamic patterns of T within an individual...
September 20, 2017: Journal of Urology
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