Oral hormonal contraception
The best-known IUDs contain copper, but there is also an IUD delivering levonorgestrel, a progestin; (2) How effective are these devices, and what are their adverse effects? To answer these questions, we analysed the literature using the standard Prescrire methodology; (3) T-shaped copper IUDs, with a copper surface area of 380 mm2 on 3 arms, and the levonorgestrel-releasing device, have similar contraceptive efficacy as combined oral contraceptives that are used correctly.
In contrast, IUDs are more effective than oral contraception used incorrectly; (4) Among IUD users, there are on average about 6 pregnancies per 1000 woman-years.
There is less experience with the levonorgestrel IUD which seems to be at least as effective as copper IUDs; (5) The rare intrauterine pregnancies that occur in women using an IUD generally end in miscarriage. About 25% of these pregnancies end in a live birth if the device is left in place, compared to about 90% if the device is removed; (6) Ectopic pregnancies are rarer in IUD users than in women who do not use contraception.
However, about one in 20 pregnancies that occur in women using an IUD is ectopic; (7) The IUD is expelled in about 5% to 10% of cases within 5 years, and expulsion recurs in about 30% of these women; (8) Problems such as difficult insertion, pain, bleeding and syncope are reported in less than 1.5% of cases overall; (9) Uterine perforation during insertion is rare, occurring in 0.6 to 16 cases per 1000 insertions, regardless of the type of IUD.
The risk of perforation is higher when the IUD is inserted less than 4 to 6 weeks after delivery or elective abortion; (10) During the first 3 months after insertion, the risk of pelvic infection is slightly higher than in the general population, especially in women with pre-existing asymptomatic Chlamydia trachomatis infection.
There are about 6 pelvic infections per 1000 woman-years of IUD use. Routine antibiotic prophylaxis is unnecessary. The interview and physical examination may lead to diagnosis of C. trachomatis infection or other sexually transmitted infections.
In these cases, treatment may be needed before IUD insertion. Women must be warned that IUDs do not protect them from sexually transmitted diseases; (11) Menstrual bleeding is often heavier in women with cooper IUDs than in women who do not use IUDs, and may be associated with menstrual pain; (12) The levonorgestrel IUD is associated with a marked reduction in menstrual blood loss and irregular bleeding; amenorrhoea occurs in 35% of women after 2 years of use.
The levonorgestrel IUD also has hormonal adverse effects such as headache, acne, breast tension and functional ovarian cysts; (13) IUDs can safely be used in breastfeeding women, immediately after a pregnancy, in cases of diabetes or HIV infection, during nonsteroidal antiinflammatory drug therapy, and after an ectopic pregnancy.
The only problems occurring in women who have never had children are pain during insertion and more frequent expulsions; (14) A copper IUD is a first-line contraceptive method for women with a history of deep venous thrombosis, pulmonary embolism, or coronary events; (15) It is better to postpone IUD insertion when the woman has a genital tract infection or unexplained vaginal bleeding; (16) IUD insertion is an effective alternative to "morning-after" hormonal contraception.
Intrauterine devices: an effective alternative to oral hormonal contraception
Prescrire Int. 2009 Jun; 18(101): 125-30(1) (Hubmed.org)
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Dehydroepiandrosterone supplementation in assisted reproduction
RECENT FINDINGS:
Overall, 50-75 mg of dehydroepiandrosterone supplementation for at least 4 months may either result in natural conception or considerably improves intrauterine insemination and IVF outcome and pregnancy rates to women with confirmed diminished ovarian reserve, premature ovarian failure or premature ovarian aging. Positive effect has been reported to oocyte and embryo quality, even to women aged 40-47 years. The number of euploid embryos is increased, and miscarriage rate is decreased.
SUMMARY:
Although more data on the dehydroepiandrosterone effect on assisted reproduction are needed, results obtained over the last few years confirm the improvement of oocyte production and pregnancy rates. No significant side effects are reported, and those include mainly hirstusism and acne.
Dehydroepiandrosterone supplementation in assisted reproduction: rationale and results.
Curr Opin Obstet Gynecol. 2009 Aug; 21(4): 306-8Mamas L, Mamas E
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The endocannabinoid system of the skin in health and disease
Recent studies have intriguingly suggested the existence of a functional ECS in the skin and implicated it in various biological processes (e.g. proliferation, growth, differentiation, apoptosis and cytokine, mediator or hormone production of various cell types of the skin and appendages, such as the hair follicle and sebaceous gland).
It seems that the main physiological function of the cutaneous ECS is to constitutively control the proper and well-balanced proliferation, differentiation and survival, as well as immune competence and/or tolerance, of skin cells. The disruption of this delicate balance might facilitate the development of multiple pathological conditions and diseases of the skin (e.g. acne, seborrhea, allergic dermatitis, itch and pain, psoriasis, hair growth disorders, systemic sclerosis and cancer).
"The endocannabinoid system of the skin in health and disease: novel perspectives and therapeutic opportunities.'
Trends Pharmacol Sci. 2009 Jul 14; BÃró T, Tóth BI, Haskó G, Paus R, Pacher P
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Heat-killed Propionibacterium acnes
The etiology of acne is a complex process, and acne is one of the most common skin disorders affecting millions of people. The pathogenesis of acne is closely associated with the bacterium, Propionibacterium acnes which was previously known as Corynebacterium parvum.
Both viable and non-viable P. acnes/C. parvum have been shown to induce an immunostimulatory effect in vivo, suggesting that even dead bacteria continue to activate an inflammatory response. Acne treatments with lasers or devices, induce a bactericidal effect through heat generation which may not address the immunogenic activity of P. acnes and the resulting acne inflammation.
Therefore, we sought to determine whether killed P. acnes is capable of inducing an inflammatory response and therefore could be a contributing factor in acne. Direct heat treatment of P. acnes cultures with temperatures ranging from 50 degrees C to 80 degrees C reduced P. acnes viability. Both viable and heat-killed P. acnes activated the p38 MAP kinase and its downstream substrate Hsp27. Stimulating keratinocytes with normal and heat-inactivated P. acnes resulted in an induction of proinflammatory nitric oxide and IL-8 production.
Thus killed P. acnes is capable of inducing inflammation in skin suggesting that therapies that have both bactericidal and anti-inflammatory effects may result in a more effective treatment of patients with acne than treatments that are bactericidal alone.
"Heat-killed Propionibacterium acnes is capable of inducing inflammatory responses in skin"
Exp Dermatol. 2009 Jul 14; Lyte P, Sur R, Nigam A, Southall MD
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