Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0006142 (breast cancer)
160,383 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Modern oral contraceptive pills are safe for the majority of American women. The most important contraindications to oral contraceptive pill use are a history of thrombophlebitis or thromboembolism while on the pill or during pregnancy, smoking over 15 cigarettes daily if over 35 years of age, active liver disease, hypertension, diabetes, a lipid disorder, or breast cancer. A history of gestational diabetes is not an absolute contraindication to oral contraceptive pill use, but women with such a history must be encouraged to exercise and eat properly to reduce the high risk of developing overt diabetes. Couples should be encouraged to use condoms to reduce the risk of sexually transmitted diseases. Most antibiotics do not decrease the effectiveness of the pill. Nonuse of contraception among adolescents and older couples is the most common reason for failure. Postcoital contraceptive pills are available but are not completely effective. The use of modern contraceptives is almost always safer than nonuse.
...
PMID:Update on oral contraceptive pills and postcoital contraception. 150 69

The incidence of polycystic ovarian disease (PCOD) varies from 0.6 to 92%, depending on the parameters analysed, PCOD has been reported to appear in association with Cushing's Syndrome, adrenal hyperplasia, hypothyroidism, adrenal and ovarian tumours and some genetic abnormalities. The controversy regarding the pathophysiological mechanism underlying the disease still persists. Critical evaluation of old data, assessment of new findings concerning the possible role of insulin, growth factors and their binding proteins, and extrapolation of neuroendocrinological experiments enabled the construction of a concise hypothesis of the pathophysiology of PCOD. According to this hypothesis, PCOD is a multifactorial disease. The sequence of events finally leading to clinical manifestation of the disease (hyperandrogenism, abnormal luteinizing hormone pulsatility pattern and ovulation disturbances) may originate in different organs or be triggered by different mechanisms. It may stem from the adrenals, the hypothalamus or higher central nervous system centres, or from the ovary itself; it may originate from excess of fat tissue usually combined with hyperinsulinism; or may be the result of a net increase in active growth factors. Each of the above disturbances probably appears early in life, much before the clinical signs of the disease are evident. Predisposing factors such as gestational diabetes of the mother, childhood obesity, borderline adrenal hyperplasia and late menarche have to be looked for as early as possible in order to prevent the late consequences of the disease, such as increased risk of infertility, endometrial and breast cancer and cardiovascular disease.
...
PMID:Pathophysiology of polycystic ovarian disease: new insights. 180 58

A case is presented of a healthy, 36-year-old woman with leiomyomas of the uterus to illustrate the broad dimensions of choosing an appropriate contraceptive method. Additionally, this woman had a history of pregnancy-induced hypertension, gestational diabetes, and a family history of breast and endometrial cancer. The woman presented for contraceptive advice 5 days after a regular, normal menstruation. She reported that she generally had been healthy, with no current medical problems and had used several barrier methods of contraception. The woman found the barrier methods to be unreliable as well as somewhat difficult to use. The clinical problem was how best to provide this woman with contraception. The patient was divorced and sexually active, and she wanted to remarry and to have more children. As this patient was parous and had not experienced previous problems with excessive menstrual blood loss or dysmenorrhea, she might have tolerated an IUD well. However, women with leiomyomas, especially the kind that produce an irregular cavity, should not use an IUD. Additionally, IUDs have been linked to an increased incidence of pelvic inflammatory disease, particularly in women with multiple partners. Consideration was given to steroid contraceptives -- oral (OCs), injectable, and implantable -- for this patient. The last 2 modalities were potential options as the patient had no immediate plans for conception. Various aspects of the patient's family history as well as the physical findings needed to be evaluated in relation to the use of hormones. In this context, the familial predisposition to breast cancer was considered. As the results of the Centers for Disease Control and the National Institute of Child Health and Human Development Cancer and Steroid Hormone Study showed no change in risk of breast cancer in OC users, regardless of age at 1st use or subsequent duration of use and other large epidemiologic studies have confirmed these findings, the patient's family history of breast cancer was not a contradindication to OC use. The somewhat remote family history of endometrial carcinoma was not epidemiologically significant. The fact that no adverse effect of high dose contraceptives on existing tumors has surfaced in 2 decades of OC use by millions of women is reassuring. A large body of clinical information concludes that there is no contraindication to prescribing OCs for women with gestational diabetes. Concerns about the cardiovascular effects of OCs stemming from reports in the 1960s and 1970s remain questionable and are not likely to be relevant to contemporary OCs. Injectable medroxyprogesterone, which is remarkably free of adverse reactions, proved or suspected, after 2 decades of use, was chosen as an appropriate contraception option for the patient described.
...
PMID:Medical aspects of contraception. 310 32

In a population-based case-control study of parous women less than 45 years of age, we evaluated the relations of various pregnancy characteristics to maternal breast cancer risk. Cases (N = 1,239) diagnosed with in situ or invasive breast cancer from 1990 to 1992 in Atlanta, GA, Seattle/Puget Sound, WA, and five counties in central New Jersey, and population controls (N = 1,166) identified by random-digit dialing, were interviewed regarding the details of their pregnancies. We used logistic regression to estimate relative risks (RR) and 95% confidence intervals (CI) and to adjust for breast cancer risk factors. Women who reported nausea or vomiting in their first pregnancy had a slightly lower risk of breast cancer (RR = 0.87; 95% CI = 0.72-1.0). We found no strong or consistent associations for maternal risk related to gestational length, pregnancy weight gain, gestational diabetes, pregnancy hypertension, or gender of the offspring, although we found some evidence for reductions in risk for toxemia (RR = 0.81; 95% CI = 0.61-1.1) and specific sex (RR for female twins vs singletons = 0.48; 95% CI = 0.20-1.3) and timing characteristics of twinning. Overall, these data provide little support for the hypothesis that pregnancy hormone levels are associated with subsequent maternal risk of breast cancer in young women.
...
PMID:Pregnancy characteristics and maternal risk of breast cancer. 979 75

Polycystic ovary syndrome is a common problem affecting approximately 5% of women of reproductive age when defined by clinical features of anovulation and hyperandrogenism. Metabolic derangements associated with this condition may predispose to a range of diseases with attendant morbidity and mortality risks. In general, available data support significantly increased rates of type II diabetes mellitus, dyslipidemia, and endometrial cancer in PCOS that are not completely explained by obesity; data also suggest that rates of hypertension, gestational diabetes, and pregnancy-induced hypertension may likewise be increased, although the extent to which obesity mediates these risks is not clear. The increased prevalence of several cardiovascular risk factors in PCOS and limited cross-sectional data suggest that cardiovascular disease should be more likely in PCOS, but prospective data are lacking to confirm this supposition. Limited data have suggested an association between PCOS and ovarian cancer risk and require further study. The present data do not support an increased risk for breast cancer in this condition. Long-term prospective data are clearly needed to better delineate the nature and magnitude of disease risks associated with PCOS, with appropriate adjustment for associated obesity. Such information is a necessary background for understanding the role of established and emerging PCOS therapies, including oral contraceptives, intermittent progesterone, ovulation induction agents, and insulin sensitizers, in modifying such risks. In the meantime, close follow-up of women with PCOS and encouragement of lifestyle practices likely to reduce disease risks, such as regular exercise and weight control, should be standard practice.
...
PMID:The epidemiology of polycystic ovary syndrome. Prevalence and associated disease risks. 1035 18

Type 2 diabetes is a serious health problem that affects more than 7% of adults in developed countries. Up to 16% of patients with breast cancer have diabetes, and two major risk factors for type 2 diabetes-old age and obesity-are also associated with breast cancer. Three mechanisms have been postulated to associate diabetes with breast cancer: activation of the insulin pathway, activation of the insulin-like-growth-factor pathway, and regulation of endogenous sex hormones. Comparative cohort studies and case-control studies suggest that type 2 diabetes may be associated with 10-20% excess relative risk of breast cancer. Gestational diabetes mellitus, but not type 1 diabetes, might also be associated with excess risk of breast cancer. Moreover, diabetes and its complications can adversely affect cancer therapy and the use of screening, which will thus affect the outcome of patients with breast cancer.
...
PMID:Diabetes mellitus and breast cancer. 1568 19

Gestational diabetes is becoming increasingly common; it is important to determine how it relates to future risk of disease. We investigated the relation of gestational diabetes to breast cancer in 37,926 women who had one or more live births in 1964-1976 for whom information had been collected on complications of pregnancy. In this cohort there were 1,626 cases of breast cancer reported to the Israel Cancer Registry before January 1, 2005 and 410 cases of gestational diabetes recorded from birth records. There were 29 cases of breast cancer among women diagnosed with gestational diabetes. Using Cox proportional hazards models to control for age and birth order at the first observed birth and other characteristics, we found that the incidence of breast cancer was increased among women diagnosed with gestational diabetes (relative rate = 1.5, 95% confidence interval 1.0-2.1). This effect was seen only among women 50 years and older (relative rate 1.7, 95% confidence interval 1.1-2.5) but not among women <50 (relative rate = 1.0, 95% confidence interval 0.5-2.1). The findings suggest that gestational diabetes may be an important early marker of breast cancer risk among post-menopausal women, but these results need to be confirmed in future studies.
Breast Cancer Res Treat 2008 Mar
PMID:Gestational diabetes and the risk of breast cancer among women in the Jerusalem Perinatal Study. 1747 89

Diabetes mellitus has been associated with breast cancer, although no studies appear to have adequately assessed the association in Hispanic women, a population with a high prevalence of diabetes. The authors investigated this association in a population-based case-control study of Hispanic and non-Hispanic White women living in the southwestern United States. Breast cancer cases diagnosed in 1999-2004 were identified through state cancer registries (1,526 non-Hispanic Whites, 798 Hispanics). Age- and ethnicity-matched controls (1,599 non-Hispanic Whites, 924 Hispanics) were selected from commercial mailing lists and driver's license and Social Security records. Diabetes history was assessed through interviewer-administered questionnaires. Odds ratios and 95% confidence intervals were calculated using logistic regression, adjusting for age, body mass index at age 15 years, and parity. Having any type of diabetes was not associated with breast cancer overall (odds ratio = 0.94, 95% confidence interval: 0.78, 1.12). Type 2 diabetes was observed among 19% of Hispanics and 9% of non-Hispanic Whites but was not associated with breast cancer in either group. Gestational diabetes was inversely associated with breast cancer in both ethnic groups, especially when first diagnosed at age < or =35 years (odds ratio = 0.54, 95% confidence interval: 0.37, 0.79). In this study, diabetes was not associated with breast cancer overall, although the inverse association with gestational diabetes warrants further investigation.
...
PMID:Population-based case-control study of diabetes and breast cancer risk in Hispanic and non-Hispanic White women living in US southwestern states. 1803 64

The short- and long-term effects of pregnancy on breast cancer risk are well documented. Insight into potential biological mechanisms for these associations may be gained by studying breast cancer risk and pregnancy characteristics (e.g., preeclampsia, twining), which may reflect hormone levels during pregnancy. To date, no review has synthesized the published literature for pregnancy characteristics and maternal breast cancer using systematic search methods. We conducted a systematic search to identify all published studies. Using PUBMED (to 31 July 2009), 42 relevant articles were identified. Several studies suggest that multiple births may be associated with a lowered breast cancer risk of about 10-30%, but results were inconsistent across 18 studies. The majority of 13 studies suggest about a 20-30% reduction in risk with preeclampsia and/or gestational hypertension. Six of seven studies reported no association for infant sex and breast cancer risk. Data are sparse and conflicting for other pregnancy characteristics such as gestational age, fetal growth, pregnancy weight gain, gestational diabetes, and placental abnormalities. The most consistent findings in a generally sparse literature are that multiple births and preeclampsia may modestly reduce breast cancer risk. Additional research is needed to elucidate associations between pregnancy characteristics, related hormonal profiles, and breast cancer risk.
...
PMID:Pregnancy characteristics and maternal breast cancer risk: a review of the epidemiologic literature. 2022 71

The present review outlines the role of breastfeeding in diabetes. In the mother, breastfeeding has been suggested to reduce the incidence of type 2 diabetes mellitus, the metabolic syndrome and cardiovascular disease. Moreover, it appears to reduce the risk of premenopausal breast cancer and ovarian cancer. In the neonate and infant, among other benefits, lactation confers protection from future both type 1 and type 2 diabetes. Whether lactation protects women with gestational diabetes mellitus and their offspring from future T2DM remains to be answered. Importantly, for diabetic mothers, antidiabetic treatment itself may affect breastfeeding. There is not enough data to allow the use of oral hypoglycaemic agents. Therefore, insulin currently remains the optimal antidiabetic treatment during lactation. In conclusion, breastfeeding could be considered a modifiable risk factor for the development of diabetes and even a potential protective lifestyle measure from future cardio-metabolic and malignant diseases. Therefore, health care professionals should encourage both women with and without diabetes to breastfeed their children.
...
PMID:Breastfeeding and diabetes. 2134 15


1 2 3 Next >>