Prolactin Hormone Concentrations Research Articles

Estimation of Prolactin and Some Biochemical Parameters in Some Psychotic Male Patients Treated with Risperidone in Tikrit City

The primary purpose of this research is to examine the impact of taking risperidone by psychotic individuals on serum levels of prolactin hormone as well as a few biochemical indicators (total protein and liver enzymes AST and ALT). The experiment required collecting fifty blood samples and dividing them into two groups: the first group consisted of normal, healthy persons who served as a control. In contrast, the second group consisted of psychotic patients treated with risperidone at a dosage of two milligrams per day. The findings of this study showed that There were significant increases in total protein content at levels (P≤ 0.05) of the group 2 compared to control, and there were significant gains in liver enzymes (AST and ALT) concentration range at levels (P ≤0.05) of the second group in comparison to the control group, and there were substantial improvements increases in prolactin hormone concentrations at levels (P≤ 0.05) of the second group in compared to control.

The Effect of the Synergy Between Opiates and Prolactin on the Growth of Chickens

It is generally admitted that opioids can stimulate the release of both prolactin (PRL), the opiates induced hyperprolactinemia via dopamine receptor blockade. Prolactin hormone (PRL) plays an important role in conjunction with some hormones such as GH, PTH, ACTH, and T4 to stimulating body growth. The prolactin hormone has an important role in feeding behavior, as its role is evidenced by its effect on metabolism. In migratory birds, fat is stored in its body before migration, and the hormone prolactin activates the process of building and storing fats lipogenesis and Deposition of Fats. The hypothesis of this study is to investigate the role of natural stimuli such as sound in stimulating peptide hormones in the body and thus weight gain in chickens. 100 birds of 1 day old were used it was divided into two treatments, each treatment with 5 replications. The chicks heard different sounds and it was as follows: the first the control without sound CS, the second hen sound (mother sound) HS. The sound was heard from the one old day to 14 days, at a rate of 3 times a day, in the morning, in the afternoon and at night, for an hour each time. Chicks were raising to 42 day. The hormone was estimated in three stages, before exposure to sound 30 minutes during exposure directly after exposure for 30 minutes, and the prolactin hormone concentration was calculated each time, the results show: Significant increase (P<0.05) in live body weight cumulative, weight gain cumulative, relative growth rate cumulative, and total feed conversion ratio to HS compared with CS. Significant improvement (P<0.05) in the concentration of the hormone prolactin of HS in the period after exposure to sound 30 minutes during exposure directly after exposure for 30 minutes at the age of 14 days (the end of the exposure to the sound of the period). As mentioned above, the opioids stimulate prolactin, but the question here who is responsible for stimulating the opioids? Opioids secretion is linked to the body’s sense of well-being and well-being, as it is secreted naturally to aid in rest and relaxation, and this is often noticed on the organism when it feels safe and comfortable. Chicks, when it hearing her mother’s sound, gives it a powerful stimulus, and they become more active and more and less fearful and amazement. This will release the opioid, which in turn stimulates prolactin. PRL and GH are secreted from the anterior pituitary gland and affect a wide variety of physiological functions in birds. Similarly, a relationship between plasma GH concentration and body growth is well documented. There is a chemical similarity between prolactin hormone and growth hormone, so there is a similarity in biological functions, as prolactin stimulates physical growth and weight gain in birds, reptiles and mammals due to its similarity with growth hormone as the injection of prolactin causes a significant increase in body weight.

The Effect of Vitamin E and PMSG Treatment during Breeding Season on some Biochemical Parameters and Reproductive Trails for two Breeds of Sheep

This study was conducted in the animal field of College of Agriculture, University of Basrah from 17 May to 15 October 2015, to investigate the influence of treatment of vitamin E and PMSG during breeding season on some biochemical parameters and reproductive characteristics in sheep. A total of 48 ewes included 24 Arabi and 24 Najdi, ewes from each breed were divided randomly into two groups, 12 ewes as control group and 12 ewes as treatment group with vitamin E and PMSG. The results showed an improving the weights at pre-parturition and post-parturition, twice percentage and placenta characteristics in treated group for each breeds compared with control groups. The fertility was high in Arabi treated group in comparison with Najdi breed. However, Najdi was significant improved in placenta characteristics in comparison with Arabi breed. Glucose, vitamin C and zinc concentrations in serum were significant increase in serum during post-parturition in both two breeds. Serum prolactin hormone concentration significant decreased during breeding and pre- parturition periods compared with post-parturition in both two breeds. Arabi ewes showed a significant increase in glucose allantois fluid and a significant decrease in cholesterol allantois fluid compared with Najdi ewes.

Effect of Prolactin Hormone on Reproductive activity and some physiological parameters of Rabbits

The objective of the present study was to determine the influence of prolactin hormone on reproductive activity of female rabbit. Study was conducted on the laboratory animal house and it depended on fifteen mature rabbit does and one mature buck housed on a special cage separately. The females were divided randomly into two groups; the first group is Control group: Female of this group (n=7) were administrated 2 ml of normal saline orally /day. second group is treated group: Females of this group (n=8) were received orally 5 mg of Parlodil® (Bromocriptine) daily for 5 consecutive days then stopped one week and repeated in the same schedule. All animals were clinically observed for detect any drug reaction and signs of sexual behavior. Vaginal smears were taken to determine any changing. The results of the study revealed: Emerge of estrus at the third dose of treatment in five does (First course) and conceive with a male and three of them had been pregnant these pregnant does were aborted in post treatment period (after the end of the second course of treatment). The results of vaginal smears showed significant increase (P&lt;0.05) in percentage of intermediate epithelial cells in treated group in comparison with control group simultaneously with significant decrease in superficial component. While the parabasal cells not showed differences between groups, but there was a significant decline in percentage via treating period in comparison with other study periods in treated group female. The treatment does not affect significantly on the blood parameters involved in this study except white blood cells count which decreased significantly in treated group during post treatment period while prolactin hormone concentration in treated group sera was dropped significantly immediate with starting the administration of parlodil. In conclusion, the Prolactin hormone have a role in maintenance of corpus luteum in rabbits and the treatment with dopamine agonist (Bromocriptine) leads to loses of the pregnancy. The variation of the epithelial component of the vaginal smear has no value in detection of sexual activity for the rabbits.

RELATIONSHIP BETWEEN PROLACTIN HORMONE LEVEL, MOLTING AND DUCK EGG PRODUCTION

The aims of this study were to obtain information on the mechanism of molting and the prolactinhormone levels affecting egg production. The study utilized AP (crossbred of Alabio ♂ with Peking ♀)and PA (crossbred of Peking ♂ and Alabio ♀ ducks) with a total of 180 birds. The observed variableswere the duration of cessation of egg production before and after molting, the prolactin hormone level inthe period of molting, the egg production period before and after molting. The data was analyzed usingANOVA, regression and correlation. The results showed that AP crossbred had fewer molting (23.33%)compared to PA (50.00%). The mechanism of molting is always preceded by cessation of eggproduction, molting and relaying. The prolactin hormone concentrations of AP and PA in the periodbefore and after molting were significantly higher than in the period of molting. At the egg productionperiod before molting, the prolactin hormone concentration of AP ducks was higher than the PA ducks.So that the egg production of AP before molting (0-16 weeks) was higher than the PA. The eggproduction of AP was higher than PA, 256.66±6.00 vs 232.22±6.64 eggs for 48 weeks. So it can beconcluded that the prolactin hormone affects the molting and egg production.

Effect of Bromocriptine administration on semen physical characteristics and related hormones in Iraqi male goats

The present study was carried out at the farm of College of Veterinary Medicine –University of Baghdad, during the period from 30 / 9 / 2007 to 1 / 5 / 2008. The aim of thisstudy was to investigate the influences of Bromocriptine treatment on the semencharacteristics and related hormones ( Prolactin, LH, Testosterone and Cortisol ). To get thesegoals, this study designed depending on 14 mature bucks divided into two groups. Bucks ofthe group ( B ) received orally 5 mg of bromocriptine ( Parlodel )® per animal per day forfive consecutive days and gain a second treatment with interval of 14 days in the sameschedule of administration. Control group ( C ) injected with distil water only. Data collectedand statistically analyzed and the results were tabulated:Treatment of group B bucks with Bromocriptine resulting in significant (P&lt;0.05 ) increasesof semen volume. Also the viability of sperms represented by mass and progressive motilitieswere increased significantly than those of control bucks’ semen. Percentage of life spermswas higher significantly than that of control bucks semen. Whereas, abnormalities of spermwas significantly lower than control. Concentration of sperm was elevated significantlycompared with control bucks’ sperm concentration. Bromocriptine treatment causedsignificant decline in prolactin hormone concentration. This lowering was accompanied withsignificant increase in testosterone hormone. While, cortisol hormone and LH not affected bybromocriptine treatment.From these results, it may be concluded that; bromocriptine treatment improves bothlibido and semen characteristics and have a special role in shortening sexual arresting periodof bucks

The changes in some blood metabolites associated with the physiological responses in sheep

This study was undertaken to evaluate the changes in the pattern of prolactin hormone associated with milk yield and milk composition in ewes. Moreover, the relationships of thyroxin, glucose, cholesterol and total protein with growth performance of lambs were investigated under southern Egypt local environmental conditions. Both ewes and lambs were of four genotypes namely, Ossimi (O), Saidi (S), Fl Chios-Ossimi (CO) and Fl Chios×Saidi (CS). Average daily milk yield, total milk yield and lactation period length were significantly ( P<0.05) higher in ewes with Chios genetics than the local breeds. Moreover, CS ewes were superior in this respect compared with CO ewes. However, none of the milk constituents (fat, total solids, solids non-fat and lactose) was affected by genotype. Genotype of ewes had a significant ( P <0.01) effect on prolactin hormone concentration being higher in crossbred ewes (CS and CO) than local ones (O or S). Across genotype, milk production was found to be positively correlated with plasma prolactin hormone concentration ( r=0.667, P<0.05). Body weight of lambs (O, S, CO and CS) at birth, at weaning (2 months) and at 4-months-old significantly ( P<0.01) differed among the various genotypes studied. CO lambs recorded the heaviest ( P<0.05) birth and weaning weights. Plasma thyroxin (T 4), glucose, cholesterol and total protein at birth, weaning and 4 months of age were significantly ( P<0.05) higher in the Chios crossbred lambs. Plasma T 4 hormone concentration was found to be negatively associated with age changes across genotypes r=−0.841, P<0.01).