Calcitonin for the modulation of sperm function

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/585 (2006.01) A61K 35/52 (2006.01) A61K 38/23 (2006.01) C12N 5/00 (2006.01) C12N 5/06 (2006.01) G01N 33/58 (2006.01)

Patent

CA 2354187

The hormone calcitonin promotes fertilizing ability in mammalian sperm and is useful for treatment of conditions of low fertility in humans and animals. Human, porcine or salmon calcitonin may be formulated in a pharmaceutical composition comprising a pharmaceutically acceptable carrier for topical application, e.g. as a cream or jelly containing up to 100 ng/ml or more of salmon calcitonin or up to 2 µg/ml or more of human calcitonin. Calcitonin may also be administered parenterally, orally, or nasally. For improving in vitro fertilization or artificial insemination methods calcitonin is added to sperm prior to use e.g. salmon calcitonin present at a concentration of from 5 to 50 ng/ml or human calcitonin at a concentration of from 20 to 200 ng/ml in the sperm preparation. Calcitonin levels in seminal plasma can also be used to diagnose infertility.

L'hormone calcitonine favorise la capacité de fertilisation du sperme de mammifère et permet de traiter les conditions de faible fertilité chez l'homme et l'animal. La calcitonine de l'homme, du porc ou du saumon peut être formulée dans une composition pharmaceutique comprenant un support pharmaceutiquement acceptable pour une application topique, comme une crème ou une gelée, contenant jusqu'à 100 ng/ml ou plus de calcitonine de saumon ou jusqu'à 2µg/ml ou plus de calcitonine d'homme. La calcitonine peut être administrée par voie parentérale, orale ou nasale. Pour améliorer les procédés de fertilisation in vitro ou d'insémination artificielle, on ajoute de la calcitonine au sperme avant son utilisation, par exemple, une concentration de calcitonine de saumon de 5 à 50 ng/ml ou de calcitonine d'homme à raison de 20 à 200 ng/ml dans la préparation de spermes. Les taux de calcitonine dans le plasma séminal peuvent permettre de diagnostiquer l'infertilité.

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