Track topics on Twitter Track topics that are important to you
Environmental estrogen pollution and estrogen effects on the female reproductive system are well recognized scientifically. Among the estrogens, 17 β-estradiol is a priority in environmental estrogen pollution, and it is also a major contributor to estrogen which regulates the female reproductive system. 17 β-estradiol is carcinogenic and has a tumor promotion effect relating to breast cancer, lung cancer and others. It also affects psychological well-being such as depression, fatigue and others. Thus, a simple method of detecting 17 β-estradiol will be important for both environmental estrogen pollution and health care. This study demonstrates a single-use, cost-effective 17 β-estradiol biosensor system which can be used for both environmental and health care applications. The bio-recognition mechanism is based on the influence of the redox couple, K₃Fe(CN)₆/K₄Fe(CN)₆ by the interaction between 17 β-estradiol antigen and its α-receptor (ER-α; α-estrogen antibody). The transduction mechanism is an electrochemical analytical technique, differential pulse voltammetry (DPV). The levels of 17 β-estradiol antigen studied were between 2.25 pg/mL and 2250 pg/mL; Phosphate buffered saline (PBS), tap water from the Cleveland regional water district, and simulated urine were used as the test media covering the potential application areas for 17 β-estradiol detection. An interference study by testosterone, which has a similar chemical structure and molecular weight as those of 17 β-estradiol, was carried out, and this 17 β-estradiol biosensor showed excellent specificity without any interference by similar chemicals.
This article was published in the following journal.
Two highly sensitive ELISAs for the specific detection of 17β-estradiol (E2) residues were developed, showing the limits of detection (LOD, a concentration at 15% inhibition of color development) of ...
Higher circulating estradiol levels are generally obtained using conventional radioimmunoassays (RIA) compared to liquid chromatography/tandem mass spectrometry (LC-MS/MS) assays, and this has been at...
The objectives of this study were to specifically detect viable Escherichia coli in environmental waters by targeting the ycjM gene in a propidium monoazide (PMA)-qPCR assay. PMA is a viability dye th...
Health investments, defined as formal expenditures to either produce or care for health, in the US are extremely inefficient and have yet to unlock the country's full potential for equitable health an...
The US health care system needs effective tools to address complex social and environmental issues that perpetuate health inequities, such as food insecurity, education and employment barriers, and su...
Study to Investigate the Pharmacokinetics & Safety Following One Application of 3 Different Doses 0.5,0.75,& 1.25 gm,a Transdermal Estradiol Cream (VML-0203), in Comparison to a Single Dose of EstroGel 1.25 gm to Healthy Post-menopausal Women.
This study is a Phase I, Randomized, Open-Label, Single Center, Cross-over Study to Investigate the Pharmacokinetics and Safety following a Single Application of Three Different Doses 0.5 ...
This study is designed to compile the reasons and specific indications for the prescription of Cyproterone Acetate combined with Ethinyl Estradiol by Health Care Providers. The primary obj...
The purpose of the study is to investigate the relationship between environmental agents and reproductive health. Environmental agents of interest include exposure to chemicals such as pol...
Pediatric obesity, a defining health problem of the century, leads to long-term health disparities. This application evaluates strategies to prevent health disparities early in life by dev...
Prostate cancer is the most commonly diagnosed cancer among males in the U.S. More than 220,000 men will be diagnosed with prostate cancer in the USA this year and more that 31,000 will ...
Component of the NATIONAL INSTITUTES OF HEALTH. It conducts and supports basic and applied research to reduce the burden of human illness and dysfunction from environmental causes by, defining how environmental exposures, genetic susceptibility, and age interact to affect an individual's health. It was established in 1969.
Health care services that are respectful of and responsive to the health beliefs, practices and cultural and linguistic needs of diverse patients. The provider and the patient each bring their individual learned patterns of language and culture to the health care experience which must be transcended to achieve equal access and quality health care.
An approach to health care financing with only one source of money for paying health care providers. The scope may be national (the Canadian System), state-wide, or community-based. The payer may be a governmental unit or other entity such as an insurance company. The proposed advantages include administrative simplicity for patients and providers, and resulting significant savings in overhead costs. (From Slee and Slee, Health Care Reform Terms, 1993, p106)
Care which provides integrated, accessible health care services by clinicians who are accountable for addressing a large majority of personal health care needs, developing a sustained partnership with patients, and practicing in the context of family and community. (JAMA 1995;273(3):192)
An interval of care by a health care facility or provider for a specific medical problem or condition. It may be continuous or it may consist of a series of intervals marked by one or more brief separations from care, and can also identify the sequence of care (e.g., emergency, inpatient, outpatient), thus serving as one measure of health care provided.
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...
Bladder Cancer Brain Cancer Breast Cancer Cancer Cervical Cancer Colorectal Head & Neck Cancers Hodgkin Lymphoma Leukemia Lung Cancer Melanoma Myeloma Ovarian Cancer Pancreatic Cancer ...