There has been considerable concern about the risk that many over-the counter (OTC) cosmetic preparations may pose to the public, since many of these are not regulated by the FDA and are commonly used without medical supervision. Progesterone, which is commonly prescribed in women, is often used in hormone replacement therapy in postmenopausal women, and for the treatment of amenorrhea, infertility and premature labor. Past studies revealing the health risks of FDA–approved hormone replacement therapy (including oral progesterones and progestins) have contributed to dramatic declines in prescriptions for these products. However, unregulated natural progesterone continues to be sold over-the-counter in the form of herbal beauty creams, thus exempting them from regulatory scrutiny.
In a study recently published in The Journal of Clinical Pharmacology, (June 2005) researchers found substantial evidence that use of OTC topical progesterone results in similar drug exposure through skin absorption as that which results from taking a prescribed oral progesterone product.
The Bassett Healthcare supported study, led by Drs. Anne C. Hermann, Anne Nafziger and Joseph Bertino, consisted of twelve, healthy, post-menopausal women. Each subject was treated with topical OTC progesterone (Pro-gest cream) in one phase and prescribed oral progesterone (Prometrium) in the other phase of the study. According to the results, there was no difference between the two groups in the amount of progesterone exposure in the body. The women involved in this study also experienced similar rates of adverse effects while taking each type of progesterone. This study differed from previous studies because of its use of more precise and advanced drug analysis methods, giving results that are accurate compared to previous studies with topical progesterone products.
Do microplastics harbour additional risks by colonization with harmful bacteria?
05.04.2018 | Leibniz-Institut für Ostseeforschung Warnemünde
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
13.04.2018 | Event News
12.04.2018 | Event News
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20.04.2018 | Physics and Astronomy
20.04.2018 | Interdisciplinary Research
20.04.2018 | Physics and Astronomy