Micha Rappaport

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Insulin-like growth factor binding protein 3 (IGFBP-3) is the predominant IGF binding protein produced by cultured rat Sertoli cells. Previous studies have shown that FSH lowers the abundance of IGFBP-3 protein in Sertoli cell culture medium, suggesting that this binding protein has a physiological role in modulating insulin-like growth factor-I (IGF-I)(More)
Inositol-containing phospholipids are believed to be intimately involved in the first steps of cellular signalling by certain hormones and neurotransmitters. We examined whether parathyroid hormone (PTH) and calcitonin (CT), two hormones that affect bone physiology, would elicit changes in inositol-phospholipid metabolism in cultured bone. [3H]inositol(More)
Sertoli cells in the testis and granulosa cells in the ovary convert androgen to estrogen under the primary control of FSH. Insulin-like growth factor I (IGF-I) markedly augments FSH-stimulated estrogen production in the rat granulosa cell. In this study we examined the regulation of aromatase by FSH and characterized the effects of IGF-I on FSH-induced(More)
—Protocols for neighbor cardinality estimation can be used by a node in an ad hoc or sensor network to obtain a fast approximation of the number of nodes in its radio range. While the performance of such estimators was studied via simulations and mathematical analysis, we show here for the first time a proof-of-concept and performance test with an(More)
Designing distributed protocols with limited requirements for exchange of feedback information between the nodes is a key element in the development of cognitive and self-organizing ad hoc networks. We argue that the Minority Game (MG) and its variations can constitute useful tools towards this direction. In particular, the MG formulation is well suited for(More)
Prostaglandins (PG) have been postulated to be involved in both tumor metastases to bone and in tumor-induced bone resorption. The anthracenedione antineoplastic agents ametantrone (HAQ) and mitoxantrone are potent antioxidants and inhibit hydroperoxide-dependent initiation and propagation reactions. Therefore, these compounds may inhibit PG production and(More)