A Comparison of Blinding and Afternoon Melatonin Injections on the Histology of the Reproductive Organs, Pineal Ultrastructure and Gonadotrophin Hormone Levels in Female Syrian Hamsters

1981 ◽  
pp. 65-75 ◽  
Author(s):  
M.K. Vaughan ◽  
D.C. Herbert ◽  
G.C. Brainard ◽  
L.Y. Johnson ◽  
J.W. Zeagler ◽  
...  
Keyword(s):  
Reproductive Organs ◽  
Syrian Hamsters ◽  
Hormone Levels ◽  
Pineal Ultrastructure

scholarly journals The Change in External Genital and Estrogen Level of Bali Cattle During Estrus

2020 ◽  
Vol 3 (1) ◽  
pp. 40
Author(s):  
Desak Nyoman Dewi Indira Laksmi ◽  
I Gusti Ngurah Bagus Trilaksana
Keyword(s):  
Jugular Vein ◽  
Reproductive Organs ◽  
Cross Sectional Study ◽  
Vaginal Mucosa ◽  
Cross Sectional ◽  
Blood Samples ◽  
Hormone Levels ◽  
Direct Elisa ◽  
Bali Cattle

The successful application of reproductive technology requires knowledge of estrus cycle and the ability to detect estrus of Bali cattle. Estrus in cattle lasts for 8-30 hours showed by the acceptance of males for copulation. In this phase, estrogen levels reach maximum levels. High levels of estrogen cause signs of estrus, and changes in the reproductive organs. This study aims to determine estrogen levels during estrus and external genital changes during estrus. This research was an observational analytic study with cross-sectional study design. The samples used in this study were Bali cattle during estrus. The samples had healthy status without any signs of disease. Blood samples were taken through the jugular vein were then centrifuged to obtain serum. The obtained serum was examined for estrogen hormone levels. Mechanical measurements of hormone levels checked by using the Direct Elisa, Double Antibody Sandwich. Blood samples were collected from several SIMANTRI in Mengwi District, Badung Regency. The results showed in Bali cattle external genitals change when estrus, namely redness of the vaginal mucosa, discharge from the vagina and swelling of the vulva. While estrogen levels when estrus is 69.80 pg/ ml. Further research needs to be continued to measure the quality of ovulation after estrus.

scholarly journals Effect of dietary estrogens from bovine milk on blood hormone levels and reproductive organs in mice

2016 ◽  
Vol 99 (8) ◽  
pp. 6005-6013 ◽  
Author(s):  
N. Grgurevic ◽  
J. Koracin ◽  
G. Majdic ◽  
T. Snoj
Keyword(s):  
Bovine Milk ◽  
Reproductive Organs ◽  
Hormone Levels

Ultrastructural aspects of gymnosperms reproductive organs tissues due to their functional condition

1978 ◽  
Vol 36 (2) ◽  
pp. 440-441
Author(s):  
G. M. Kozubov
Keyword(s):  
Metabolic Activity ◽  
Functional Condition ◽  
Reproductive Organs ◽  
Considerable Change ◽  
Complicated Structure ◽  
Tetrad Stage ◽  
Ubisch Bodies ◽  
Similar Organization ◽  
Female Reproductive Organs ◽  
High Metabolic Activity

The ultrastructure of reproductive organs of pine, spruce, larch and ginkgo was investigated. It was found that the male reproductive organs possess similar organization. The most considerable change in the ultrastructure of the microsporocytes occur in meiosis. Sporoderm is being laid at the late tetrad stage. The cells of the male gameto-phyte are distinguished according to the metabolic activity of the or- ganells. They are most weakly developed in the spermiogenic cell. Ta-petum of the gymnosperms is of the periplasmodic - secretorial type. The Ubisch bodies which possess similar structure in the types investigated but are specific in details in different species are produced in tapetum.Parietal and subepidermal layers are distinguished for their high metabolic activity and are capable of the autonomous photosynthesis. Female reproductive organs differ more greatly in their struture and have the most complicated structure in primitive groups. On the first stages of their formation the inner cells of nucellus are transformed into the nucellar tapetum in which the structures similar to the Ubisch bodies taking part in the formation of the sporoderm of female gametophyte have been found.

Modification of Pineal Ultrastructure by Exogenous Hormones

1967 ◽  
Vol 25 ◽  
pp. 170-171
Author(s):  
R. A. Turner ◽  
A. E. Rodin ◽  
D. K. Roberts
Keyword(s):  
Electron Microscopy ◽  
Endoplasmic Reticulum ◽  
Rough Endoplasmic Reticulum ◽  
Estradiol Benzoate ◽  
Female Rats ◽  
List Type ◽  
Type Number ◽  
Pregnant Rats ◽  
Gonadal Atrophy ◽  
Pineal Ultrastructure

There have been many reports which establish a relationship between the pineal and sexual structures, including gonadal hypertrophy after pinealectomy, and gonadal atrophy after injection of pineal homogenates or of melatonin. In order to further delineate this relationship the pineals from 5 groups of female rats were studied by electron microscopy:ControlsPregnant ratsAfter 4 weekly injections of 0.1 mg. estradiol benzoate.After 8 daily injections of 150 mcgm. melatonin (pineal hormone).After 8 daily injections of 3 mg. serotonin (melatonin precursor).No ultrastructural differences were evident between the control, and the pregnancy and melatonin groups. However, the estradiol injected animals exhibited a marked increase in the amount and size of rough endoplasmic reticulum within the pineal cells.

Pelvic Impairments

2018 ◽  
Vol 23 (4) ◽  
pp. 9-10
Author(s):  
James Talmage ◽  
Jay Blaisdell
Keyword(s):  
Pelvic Ring ◽  
Reproductive Organs ◽  
High Impact ◽  
Pelvic Fractures ◽  
Motor Dysfunction ◽  
Impact Event ◽  
Concomitant Injuries ◽  
Rating Process ◽  
Pass Through ◽  
A Minor

Abstract Pelvic fractures are relatively uncommon, and in workers’ compensation most pelvic fractures are the result of an acute, high-impact event such as a fall from a roof or an automobile collision. A person with osteoporosis may sustain a pelvic fracture from a lower-impact injury such as a minor fall. Further, major parts of the bladder, bowel, reproductive organs, nerves, and blood vessels pass through the pelvic ring, and traumatic pelvic fractures that result from a high-impact event often coincide with damaged organs, significant bleeding, and sensory and motor dysfunction. Following are the steps in the rating process: 1) assign the diagnosis and impairment class for the pelvis; 2) assign the functional history, physical examination, and clinical studies grade modifiers; and 3) apply the net adjustment formula. Because pelvic fractures are so uncommon, raters may be less familiar with the rating process for these types of injuries. The diagnosis-based methodology for rating pelvic fractures is consistent with the process used to rate other musculoskeletal impairments. Evaluators must base the rating on reliable data when the patient is at maximum medical impairment and must assess possible impairment from concomitant injuries.

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