The Effect of Controlled Reperfusion in the Prevention of Infertility Caused by Ischemia Induced in the Contralateral Ovary in Rats with Unilateral Ovariectomy

2015 ◽  
Vol 80 (3) ◽  
pp. 199-205 ◽  
Author(s):  
Ayse Nur Aksoy ◽  
Fatma Aydin ◽  
Emsal Pinar Topdagi Yilmaz ◽  
Gonca Batmaz ◽  
Bahadir Suleyman
Keyword(s):  
Unilateral Ovariectomy ◽  
Controlled Reperfusion

ABSENCE OF COMPENSATORY OVARIAN HYPERTROPHY IN RATS WITH ANTERIOR HYPOTHALAMIC LESIONS

1961 ◽  
Vol 36 (2) ◽  
pp. 180-184 ◽  
Author(s):  
Béla Flerkó ◽  
Vera Bárdos
Keyword(s):  
Essential Role ◽  
Ovarian Tissue ◽  
Vaginal Smear ◽  
Corpora Lutea ◽  
Vaginal Smears ◽  
Hypothalamic Area ◽  
Unilateral Ovariectomy ◽  
Hypothalamic Lesions ◽  
Oestrogen Level ◽  
Stimulation Of

ABSTRACT Absence of compensatory ovarian hypertrophy in »constant oestrus rats« from lesions in the anterior hypothalamic area suggests that nervous elements localized in this region play an essential role in the stimulation of gonadotrophin output by diminution of the blood oestrogen level. The constant vaginal oestrus after unilateral ovariectomy in the majority of animals was, however, repeatedly interrupted by vaginal smears of a dioestrous type. The appearance of a dioestrous vaginal smear in the »hypothalamic constant oestrus rats« is often associated with some luteinisation. It is assumed that diminution of the blood oestrogen level by reduction of ovarian tissue in these animals may bring about a release of LH sufficient to cause formation of corpora lutea.

FSH AND LH LEVELS IN THE INTACT AND UNILATERALLY OVARIECTOMIZED CYCLING RAT

1972 ◽  
Vol 69 (2) ◽  
pp. 267-280 ◽  
Author(s):  
Richard D. Peppler
Keyword(s):  
Plasma Concentrations ◽  
Follicular Development ◽  
Slight Modification ◽  
Oestrous Cycle ◽  
Successive Cycle ◽  
Unilateral Ovariectomy ◽  
Subsequent Cycle ◽  
Intact Rats

ABSTRACT Intact 5-day cycling rats were killed between 8–10 a. m. on each day of the oestrous cycle; experimental rats were unilaterally ovariectomized (ULO) at 9 a. m. on day 1 (oestrus) and killed between 8 and 10 a. m. on days 2, 3, 4 or 1 of the subsequent cycle. Pituitary and plasma concentrations of FSH and LH were measured in both groups of rats. Pituitary FSH concentration was measured by the Steelman-Pohley method with slight modification; plasma FSH by the Igarashi-McCann assay and pituitary and plasma LH concentration by the OAAD method. In intact rats, pituitary FSH values remained constant for the first three days of the cycle, increased on day 4 and reverted to early cycle values by day 5. Plasma FSH increased between days 2 and 3 and days 5 and 1. Pituitary LH concentration remained the same for days 1 and 2; increased two-fold on days 3 and 4, and increased further by day 5. Plasma LH increased between days 2 and 3; other differences between successive cycle days were not apparent. Following ULO on day 1, pituitary FSH increased steadily, but not significantly, for the remaining cycle. Plasma FSH did not change from day 2 through day 1 of the subsequent cycle. Pituitary LH remained low on day 2, increased sharply by day 3 and decreased (50 %) by day 4. Plasma LH also increased between days 2 and 3. Other differences between successive days following unilateral ovariectomy on day 1 were not apparent. Correlation of gonadotrophin activity with follicular development suggests that the mechanism of compensatory ovulation in the rat may be one of an increase in time of exposure to a constant gonadotrophic level for the duration of the oestrous cycle rather than to increased levels of the gonadotrophin.

Effect of controlled reperfusion techniques in human lung transplantation

2001 ◽  
Vol 20 (2) ◽  
pp. 183-184 ◽  
Author(s):  
C.G. Alvarado ◽  
R. Poston ◽  
B.G. Hattler ◽  
R.J. Keenan ◽  
J. Dauber ◽  
...  
Keyword(s):  
Lung Transplantation ◽  
Human Lung ◽  
Controlled Reperfusion

scholarly journals Restoration of ovulation after unilateral ovariectomy in a woman with McCune–Albright syndrome: a case report

2008 ◽  
Vol 158 (1) ◽  
pp. 131-134 ◽  
Author(s):  
Vincent Lavoué ◽  
Karine Morcel ◽  
Philippe Bouchard ◽  
Charles Sultan ◽  
Catherine Massart ◽  
...  
Keyword(s):  
Case Report ◽  
Menstrual Cycle ◽  
Gene Mutation ◽  
Left Ovary ◽  
Ovarian Activity ◽  
Mccune Albright Syndrome ◽  
Unilateral Ovariectomy ◽  
Albright Syndrome ◽  
Gnas1 Gene ◽  
Mccune Albright

IntroductionMcCune–Albright syndrome (MAS) is characterized by peripheral precocious puberty, café-au-lait spots, and polyostotic fibrous dysplasia. This syndrome is due to a post-zygotic mutation of the GNAS1 gene with mosaic distribution and unilateral predominance. Clinical manifestations depend on the tissues carrying the mutation. We describe the ovarian function before and after unilateral ovariectomy in a woman with MAS and bilateral distribution of the GNAS1 gene mutation.Case reportA 33-year-old patient, previously diagnosed as having MAS, presented irregular menstrual cycles (30–180 days) and monophasic temperature curves. Transvaginal ultrasound and blood tests were repeated at 3-day intervals over 3 months. Findings included a persistent quiescent left ovary, a persistent polycystic right ovary, constantly high estradiol-17β (E2) levels, and very low FSH and LH levels. She also presented severe persistent pelvic pain. Because of unilateral ovarian activity, a unilateral right ovariectomy was performed as well as biopsy of the remaining left ovary. A GNAS1 gene mutation was identified in both ovaries. A regular monthly menstrual cycle was immediately restored. On day 3 of the menstrual cycle, E2 level was 30 pg/ml, FSH level was 7.5 mIU/ml, and LH level was 6.4 mIU/ml. On day 17, pelvic ultrasound showed one follicle of 25 mm in the left ovary. On day 21, the progesterone level was 13.1 ng/ml.DiscussionThis is the first report of ovulation being restored following unilateral ovariectomy in an adult patient suffering from severe MAS with GNAS1 gene mutation identified in both ovaries.

NEUROFIBROMATA SIMULATING A PENIS AND LABIOSCROTAL GONADS IN A GIRL WITH VON RECKLINGHAUSEN'S DISEASE

PEDIATRICS ◽  
1966 ◽  
Vol 37 (3) ◽  
pp. 456-459
Author(s):  
Frederic M. Kenny ◽  
George H. Fetterman ◽  
Chawalit Preeyasombat
Keyword(s):  
Ambiguous Genitalia ◽  
Von Recklinghausen’S Disease ◽  
Von Recklinghausen's Disease ◽  
Histologic Diagnosis ◽  
Unilateral Ovariectomy ◽  
Recklinghausen's Disease ◽  
Recklinghausen’S Disease

A 15-year-old girl is described, who had ambiguous genitalia from birth. Enlargement of the clitoris, and labioscrotal masses were present; these were shown to be due to unusually situated neurofibromata. This is the first reported instance of neurofibromata masquerading as a phallus and testes. Prior to the correct histologic diagnosis of the neurofibromata, she underwent two exploratory laparotomies, and unilateral ovariectomy in an attempt to explain the etiology of her ambiguous genitalia.

scholarly journals Invasive Electrical Impedance Tomography for Blood Vessel Detection

2010 ◽  
Vol 4 (1) ◽  
pp. 135-137 ◽  
Author(s):  
Ørjan G. Martinsen ◽  
Håvard Kalvøy ◽  
Sverre Grimnes ◽  
Bernt Nordbotten ◽  
Per Kristian Hol ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Blood Vessels ◽  
Electrical Impedance ◽  
Low Cost ◽  
Positioning System ◽  
Impedance Tomography ◽  
Blood Vessel Detection ◽  
Vessel Detection ◽  
Novel Method ◽  
Controlled Reperfusion

We present a novel method for localization of large blood vessels using a bioimpedance based needle positioning system on an array of ten monopolar needle electrodes. The purpose of the study is to develop a portable, low cost tool for rapid vascular access for cooling and controlled reperfusion of cardiac arrest patients. Preliminary results show that localization of blood vessels is feasible with this method, but larger studies are necessary to improve the technology.

Unilateral Ovariectomy: Effect on Litter Size and Uterine Vessels in Mice

Neonatology ◽  
1974 ◽  
Vol 25 (3-4) ◽  
pp. 151-157 ◽  
Author(s):  
D.S. Dhindsa ◽  
J. Metcalfe
Keyword(s):  
Litter Size ◽  
Unilateral Ovariectomy ◽  
Uterine Vessels
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