The Proliferative Response to p27 Down-Regulation in Estrogen Plus Progestin Hormonal Therapy is Lost in Breast Tumors.

The Proliferative Response to p27 Down-Regulation in Estrogen Plus Progestin Hormonal Therapy is Lost in Breast Tumors. Transl Oncol. 2018 Mar 07;11(2):518-527 Authors: Aupperlee MD, Kariagina A, Zaremba N, Basson MD, Schwartz RC, Haslam SZ Abstract Increased proliferation and breast cancer risk has been observed in postmenopausal women receiving estrogen (E) + progestin hormone replacement therapy (HRT). Progestin action is mediated through two progesterone receptor (PR) isoforms, PRA and PRB, with unique transcriptional activity and function. The current study examines hormonal regulation of PR isoforms in the normal postmenopausal human breast and the mechanism by which progestins increase proliferation and breast cancer risk. Archival benign breast biopsies from postmenopausal and premenopausal women, and luminal breast tumor biopsies from postmenopausal women, were analyzed for regulation of PRA and PRB expression by E and E+medroxyprogesterone acetate (MPA). In the postmenopausal breast without HRT, PRA and PRB expression was decreased compared to the premenopausal breast. Both E (n = 12) and E+MPA (n = 13) HRT in the postmenopausal breast were associated with increased PRA and PRB expression, increased nuclear cyclin E expression, and decreased nuclear p27 expression compared to no HRT (n = 16). With E+MPA HRT, there was a further decrease in nuclear p27 and increased Receptor Activator of NF-kappa B Ligand (RANKL) expression compared to E-alone H...
Source: Translational Oncology - Category: Cancer & Oncology Authors: Tags: Transl Oncol Source Type: research

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ConclusionsAsian HRT users had a higher risk of breast cancer than western HRT users. Both ET and EPT were significantly associated with the risk of all breast cancer histological types and ER-positive breast cancer.
Source: Breast Cancer Research and Treatment - Category: Cancer & Oncology Source Type: research
CONCLUSIONS: Currently, there is insufficient high-quality evidence to inform women considering HRT after treatment for endometrial cancer. The available evidence (both the single RCT and non-randomised evidence) does not suggest significant harm, if HRT is used after surgical treatment for early-stage endometrial cancer. There is no information available regarding use of HRT in higher-stage endometrial cancer (FIGO stage II and above). The use of HRT after endometrial cancer treatment should be individualised, taking account of the woman's symptoms and preferences, and the uncertainty of evidence for and against HRT use. ...
Source: Cochrane Database of Systematic Reviews - Category: General Medicine Authors: Tags: Cochrane Database Syst Rev Source Type: research
Conclusions: Decisions regarding the use of HT in women who undergo BSO after detection of a BRCA mutation must be individualized based on careful consideration of the risks and benefits. However, the risks of a subsequent cancer diagnosis appear small, particularly in regards to the benefits of treatment afforded by HT.
Source: American Journal of Clinical Oncology - Category: Cancer & Oncology Tags: Original Articles: Breast Source Type: research
Conclusions:The available literature suggests that HT is a viable option for the primary prevention of cardiovascular disease in postmenopausal women. Newer trials will likely verify this assessment. If this is enough to change clinical practice, however, remains to be seen given the general fear of HT by many with prescriptive authority, and also the women in our care. Objective: Clinical trials in menopause have undergone much scrutiny over the years. This has led to significant shifts in the treatment of symptomatic menopause and a substantial impact on women. We aim to delineate the key studies contributing to this...
Source: Menopause - Category: OBGYN Tags: Clinical Corner: Invited Review Source Type: research
It’s not going to kill you to take hormone replacement therapy. That’s the take home message from the latest analysis of the Women’s Health Initiative, the largest and longest randomized trial of hormone replacement therapy (HRT) in menopausal women. After almost 18 years of follow up in the WHI, there was no increase in overall mortality, including death rates from cancer, in women taking HRT for up to 5.6 years (estrogen plus progestin) or 7.2 years (estrogen alone). There was a non-significant reduction in mortality among those who started HRT between ages 50 and 59, the group most likely to ...
Source: The Blog That Ate Manhattan - Category: Primary Care Authors: Tags: Hormone Replacement Menopause WHI breast cancer estrogen HRT Prempro Source Type: blogs
The pendulum has swung from one extreme to the other when it comes to hormone replacement therapy (HRT) to treat symptoms of menopause. At first, the replacement hormones—mostly a combination of estrogen and progestin to replace what the body stops making after menopause—were seen as a panacea. Doctors thought they could not only relieve hot flashes and night sweats, but also prevent chronic aging diseases like heart problems and weakening bones. But studies then found that the supplement hormones could lead to a higher risk of breast cancer—and that they didn’t protect the heart after all. In the l...
Source: TIME.com: Top Science and Health Stories - Category: Consumer Health News Authors: Tags: Uncategorized Drugs estrogen Hormone Therapy hormones for menopause hot flashes night sweats progestin Reproductive Health treating menopause Source Type: news
More than 100 women die of breast cancer in the U.S. every day. It's the second leading cause of cancer deaths in American women. But in my opinion, many of those women really die of a tragic medical error. Let me explain… Millions of women in the U.S. have taken Big Pharma's hormone replacement therapy (HRT). Their doctors prescribe it to try to relieve the symptoms of menopause. Like hot flashes, night sweats, mood swings and weight gain. But what the drug companies try to pass off as hormones are actually synthetic concoctions. They are fake versions of the estrogen and progesterone that your body makes ...
Source: Al Sears, MD Natural Remedies - Category: Complementary Medicine Authors: Tags: Anti-Aging Source Type: news
The risk of heart attack, stroke or breast cancer due to hormone replacement therapy has been overstated, and that has scared away some women who could benefit from it, the Society of Obstetricians and Gynaecologists of Canada said at its annual conference in Ottawa this week.
Source: CBC | Health - Category: Consumer Health News Tags: News/Health Source Type: news
In conclusion, the average effect of HRT use seems not harmful to breast cancer survival. Nevertheless, this effect of HRT use is needed for further assessment. PMID: 28601917 [PubMed - as supplied by publisher]
Source: Breast Cancer - Category: Cancer & Oncology Authors: Tags: Breast Cancer Source Type: research
Authors: Engin A Abstract Several studies show that a significantly stronger association is obvious between increased body mass index (BMI) and higher breast cancer incidence. Furthermore, obese women are at higher risk of all-cause and breast cancer specific mortality when compared to non-obese women with breast cancer. In this context, increased levels of estrogens due to excessive aromatization activity of the adipose tissue, overexpression of pro-inflammatory cytokines, insulin resistance, hyperactivation of insulin-like growth factors (IGFs) pathways, adipocyte-derived adipokines, hypercholesterolemia and exce...
Source: Advances in Experimental Medicine and Biology - Category: Research Tags: Adv Exp Med Biol Source Type: research
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