Changes of noradrenaline content in the adrenergic nerves of the pig ovaries different periods of the oestrous cycle.
This paper gives a description of the morphological features of the adrenergic nerves in the pig ovary, and discusses noradrenaline content in these nerves in different periods of the oestrous cycle. Studies were carried out on 19 sexually mature virgin pigs, each weighing about 120 kg. The animals were divided into 3 groups: 1st to 2nd day of the oestrous cycle (n = 8), 13th to 14th day of the cycle (n = 5) and 16th to 18th day (n = 6). The fluorescence method by TORRE and SURGEON (1976) was used to identify the adrenergic nerves. Noradrenaline content in the ovaries was determined according to CHANG (1964) with BRODIE'S (1966) modification. Rich adrenergic innervation was observed in all parts of the ovary. The highest fluorescence of the nerve fibers was found in the pig ovaries on the 1-2 d of the oestrous cycle. The highest Na content was observed in the adrenergic nerves of the ovaries also on the 1-2 d of the cycle, its levels being twice lower in other periods. It seems that Na content in these nerves depended, among others, on the level of some steroid hormones, such as oestradiol and progesterone.
Lakomy
M
M
Department of Animal Anatomy, Academy of Agriculture and Technology, Olsztyn, Poland.
Szatkowska
C
C
Chodkowska
D
D
D000320:Adrenergic Fibers / Q000378:metabolism*; D000818:Animals; D004971:Estrus / Q000378:metabolism*; D005260:Female; D006651:Histocytochemistry; D008856:Microscopy, Fluorescence; D009638:Norepinephrine / Q000378:metabolism*; D010053:Ovary / Q000294:innervation*; D013552:Swine / Q000033:anatomy & histology* / Q000378:metabolism
D009638:Norepinephrine