نتایج جستجو برای: lh 0
تعداد نتایج: 587301 فیلتر نتایج به سال:
The gonadotropic hormones, LH and FSH, activate adenylyl cyclase in their respective target cells and thereby initiate many biochemical responses. In addition to stimulating cAMP production, both LH and FSH promote agonist-specific increases in the cytoplasmic concentration of free calcium ions ([Ca]i) in gonadal cells. Here, we have applied single cell fluorescence video microscopy with the Ca...
STUDY QUESTION Can increasing the duration of LH-exposure with a second dose of kisspeptin-54 improve oocyte maturation in women at high risk of ovarian hyperstimulation syndrome (OHSS)? SUMMARY ANSWER A second dose of kisspeptin-54 at 10 h following the first improves oocyte yield in women at high risk of OHSS. WHAT IS KNOWN ALREADY Kisspeptin acts at the hypothalamus to stimulate the rele...
Our working hypothesis was that doses of melengestrol acetate (MGA) greater than those typically administered in estrous synchrony regimens would regulate secretion of LH and 17,-estradiol (E,) as endogenous progesterone (P4) does during the midluteal phase of the estrous cycle. We also hypothesized that endogenous P4 from the CL would interact with MGA to further decrease the frequency of LH p...
In this work, we obtain the following new results. Given a sequence D = ((h1, s1), (h2, s2) . . . , (hn, sn)) of number pairs, where si > 0 for all i, and a number Lh, we propose an O(n)-time algorithm for finding an index interval [i, j] that maximizes Pj k=i hk Pj k=i sk subject to ∑j k=i hk ≥ Lh. Given a sequence D = ((h1, s1), (h2, s2) . . . , (hn, sn)) of number pairs, where si = 1 for all...
Chemical speciation of Pb(II), Cd(II), Hg(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes of L-glutamic acid was studied at 303 K in 0–60 vol. % 1,2-propanediol–water mixtures, whereby the ionic strength was maintained at 0.16 mol dm-3. The active forms of the ligand are 3 LH , LH2 and LH–. The predominant detected species were ML, ML2, MLH, ML2H and ML2H2. The trend of the variation in the ...
Response of serum LH, FSH and prolactin to injection of synthetic LH-RH into rat anterior pituitary.
Changes in serum LH, FSH and prolactin were measured by radioimmunoassay following injection of synthetic LH-RH into the anterior pituitary and median eminence of rats. The time course of serum levels of LH and FSH after injection of synthetic LH-RH into the pituitary showed a peak at 15 min. The synthetic LH-RH had a more marked releasing effect on LH than on FSH. After injection of 20 ng into...
مقدمه: شیوع نسبتا بالای ناباروری ومشکلات زیاد مربوط به آن، این اختلال را به یک معضل بزرگ بهداشتی – اقتصادی تبدیل کرده است. پژوهش حاضر بمنظور تعیین اثر رژیم غذایی حاوی امگا-3 بر فعالیت محور هپیوتالاموسی-هیپوفیزی گنادی و سطح پلاسمایی هورمون تستوسترون انجام شد. مواد و روش ها: این مطالعه بصورت تجربی بر روی 40 سر موش صحرایی نر بالغ از نژاد ویستار در پنج گروه (8n=) شامل گروه کنترل، شاهد و گروه های تج...
The generalized local maximum principle for a difference operator L» asserts that if Lam(jc) > 0 then Vu cannot attain its positive maximum at the net-point x. Here r is a local net-operator such that Tu = u + 0(/i) for any smooth function u. This principle, with simple forms of V, is proved for some quite general classes of second-order elliptic operators Lh, whose associated global matrices a...
This paper studies the error in, the efficient implementation of and time stepping methods for a variational multiscale method (VMS) for solving convectiondominated problems. The VMS studied uses a fine mesh C 0 finite element space Xh to approximate the concentration and a coarse mesh discontinuous vector finite element space LH for the large scales of the flux in the two scale discretization....
To clarify effect of postbreeding intramuscular administration of deslorelin on mares, plasma LH and progesterone concentrations and conception rate were evaluated. In Experiment 1, deslorelin, buserelin, or a placebo was administered on day 9 (day 0=day of last breeding or AI). Plasma samples were collected daily from days 6 to 15, and additional samples were taken after treatment. There was a...
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