scholarly journals The Effects of Androstenone on the Plasma Serotonin, β-Endorphin, and Cortisol Concentrations in Thoroughbred Horses

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1694
Author(s):  
Yeonju Choi ◽  
Minjung Yoon
Keyword(s):  
Treated Group ◽  
Behavioral Changes ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Jojoba Oil ◽  
Blood Samples ◽  
Thoroughbred Horses ◽  
Plasma Serotonin ◽  
Over Time ◽  
Neuroendocrine Factors

Androstenone influences the changing behaviors of animals. Previous studies discovered that an androstenone receptor was expressed in horses and treatment with androstenone induced horses to be more compliant. As changes in the level of neuroendocrine factors result in animal behavioral changes, the objective of the study was to monitor the changes in the concentrations of 5-HT, β-endorphin, and cortisol in response to androstenone. Eight thoroughbred horses (five mares and three geldings) were treated with androstenone diluted in jojoba oil (10 µg/mL) and only oil for a control cross-overly. A handler applied the treatments to the horses′ nostril and rubbed for 5 s. Blood samples were collected before, 15, 30, and 60 min after each treatment. The concentrations of each neurotransmitter were analyzed by enzyme-linked immunosorbent assay. The concentrations of each neurotransmitter after the treatment were compared to its baseline concentration. The concentration of 5-HT of the androstenone-treated horses remained consistent throughout the experiment, while the concentration of the control group significantly decreased over time. The plasma concentration of β-endorphin in the androstenone-treated group also remained constant, whereas the concentration increased in the control group. Cortisol levels did not change in either the treated or untreated groups. An androstenone treatment triggers changes in the secretion of 5-HT and β-endorphin in horses.

scholarly journals Salmonella Bacterin Vaccination Decreases Shedding and Colonization of Salmonella Typhimurium in Pigs

2021 ◽  
Vol 9 (6) ◽  
pp. 1163
Author(s):  
Eduarda Alexandra Gonçalves de Oliveira Moura ◽  
Daniela Gomes da Silva ◽  
Caio Henrique Turco ◽  
Thainara Vitoria Carnevalli Sanches ◽  
Gabriel Yuri Storino ◽  
...  
Keyword(s):  
Salmonella Typhimurium ◽  
Blood Count ◽  
Control Strategies ◽  
Control Group ◽  
Blood Samples ◽  
Commercial Vaccine ◽  
Serum Igg ◽  
And Control ◽  
Experimental Group ◽  
Over Time

Since the occurrence of swine salmonellosis has increased over time and control strategies other than biosecurity are highly recommended, the present study aimed to evaluate the efficacy of vaccination with Salmonella Choleraesuis and Salmonella Typhimurium bacterins in pigs. Two experimental groups were formed: G1, animals immunized with two doses of a commercial vaccine (n = 20); G2, control group (n = 20). After vaccination, all pigs were orally challenged (D0) with 108 CFU of Salmonella Typhimurium and evaluated for 40 days. Every 10 days after D0, five piglets from each experimental group were euthanized and submitted to the necroscopic examination, when organ samples were collected. Blood samples and rectal swabs were collected before the first dose of the vaccine (D−42), before the second dose (D−21), before the challenge (D0), and thereafter, every three days until D39. Blood count, serum IgG measurement by ELISA, and the excretion of Salmonella Typhimurium in feces were evaluated. While the results from blood count and serum IgG concentration did not differ, the detection and excretion of Salmonella between G1 and G2 differed (p < 0.05). Therefore, it was observed that this vaccine partially protected the animals against experimental infection with Salmonella Typhimurium, reducing the excretion of bacteria in feces.

scholarly journals Elaeagnus glabra f. oxyphylla Attenuates Scopolamine-Induced Learning and Memory Impairments in Mice by Improving Cholinergic Transmission via Activation of CREB/NGF Signaling

Nutrients ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1205 ◽  
Author(s):  
Eunjin Sohn ◽  
Hye-Sun Lim ◽  
Yu Jin Kim ◽  
Bu-Yeo Kim ◽  
Joo-Hwan Kim ◽  
...  
Keyword(s):  
Learning And Memory ◽  
Ethanol Extract ◽  
Treated Group ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Tunel Staining ◽  
Therapeutic Effects ◽  
Memory Impairments ◽  
Group A ◽  
Ngf Signaling

We aimed to investigate the therapeutic effects of an Elaeagnus glabra f. oxyphylla (EGFO) ethanol extract in mice with scopolamine-induced memory dysfunction. Fifty male mice were randomly divided into a normal control group, a scopolamine-treated group, a scopolamine and EGFO extract-treated group, and a scopolamine and tacrine-treated group. EGFO (50 or 100 mg/kg/day) was received for 21 days. Step-through passive avoidance and Y-maze tests were performed to examine the effects of treatment on learning and memory impairments. Acetylcholine (Ach) levels and acetylcholinesterase (AchE) activity were measured via an enzyme-linked immunosorbent assay (ELISA). Levels of choline acetyltransferase (ChAT), nerve growth factor (NGF), cAMP response element-binding protein (CREB), and apoptosis-related protein expression were determined via Western blot analysis. EGFO pretreatment significantly attenuated scopolamine-induced memory impairments, relative to findings observed in the scopolamine-treated group. Levels of cholinergic factors in the brain tissues were markedly attenuated in the scopolamine-treated group. EGFO treatment also attenuated neural apoptosis in scopolamine-treated mice by decreasing the expression of apoptosis-related proteins such as Bax, Bcl2, cleaved caspase-3, and TUNEL staining. These results suggest that EGFO improves memory and cognition in a mouse model of memory impairment by restoring cholinergic and anti-apoptotic activity, possibly via activation of CREB/NGF signaling.

Evaluation of Parvovirus B19 and Herpesvirus-6 Serology in Brazilian Children with Common B Cell Precursor Acute Lymphoblastic Leukemia

Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 3944-3944
Author(s):  
Fernanda A Silva ◽  
Gisele M Vasconcelos ◽  
Synara NS Cordeiro ◽  
Mariana Sant’Ana ◽  
Silvia Maia Farias de Carvalho ◽  
...  
Keyword(s):  
B Cell ◽  
Parvovirus B19 ◽  
Lymphoblastic Leukemia ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Diagnostic Purpose ◽  
Cell Precursor ◽  
Blood Samples ◽  
Brazilian Children

Abstract Background. Indirect epidemiologic evidences have suggested that viral infections may represent an important risk factor in the etiological mechanisms of B cell precursor lymphoblastic leukemia (BpALL), specially common-ALL. Parvovirus B19 (PvB19) is associated with aplastic crisis, thrombocytopenia, and congenital anemia. Five studies have reported the concurrent PvB19 infection in pediatric ALL. In a view of the increasing contest about the direct or indirect role of viral infection in ALL, we evaluated the possible associations of PvB19 and herpes virus 6 (HHV-6) in samples from children suffering from hematological disorders in order to estimate the magnitude of risk of association with common-BpALL. Material and Methods. A total of 659 blood samples were randomly selected to perform the serological tests. They were part of diagnostic samples referred to CPq-INCA-Rio de Janeiro, Brazil, from 2002–2006, for diagnostic purpose. Blood samples were exclusively selected from patients in whom samples were taken at the time of the onset of sickness. The diagnosis of BpALL was based on immunophenotyping methods according to EGIL criteria. The presence of serum antibodies for PvB19 and HHV-6 were determinate by enzyme-linked immunosorbent assay. Statistical analyses were conducted using SPSS for Windows 11.0. All p values were two sided; p&lt;0.05 was considered statistically significant. Results. Common-ALL (n=176) and non-leukemic samples (n=107) considered as control group were stratified according to age-groups at diagnosis. Age distribution was: less than 2 years (15.5%); 2–6 years-old (46.0%), and 7–12 years-old (17.7%). The estimation of associated risk PvB19 IgG+ antibodies with common-BpALL was OR 0.53 95% CI (0.52–0.54); whereas HHV-6 IgG was OR 2.36, 95% CI (1.08–5.17). Conclusions. We find out a higher prevalence of HHV-6 antibodies in patients with common-BpALL, suggesting an association between HHV-6 infection e common-BpALL in Brazilian children. There is a long history in developed countries regarding the role of infections in leukemogenesis process. Further tests are necessary to confirm these results.

scholarly journals Acute Toxicity Study of Bioactive Galactomannans From Two Non-Traditional Leguminosae Sources

2021 ◽  
Author(s):  
Fabrícia da Cunha Jácome Marques ◽  
Francisco Glerison da Silva Nascimento ◽  
Dayanne Terra Tenório Nonato ◽  
Amaurílio Oliveira Nogueira ◽  
Iásly Costa Lima ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Inflammatory Cell ◽  
Joint Inflammation ◽  
Therapeutic Agents ◽  
Behavioral Changes ◽  
Female Rats ◽  
Control Group ◽  
Dermal Toxicity ◽  
Blood Samples ◽  
Acute Toxicity Study

Abstract Galactomannans from Caesalpinia pulcherrima (GM-CP) and Delonix regia (GM-DR) are being pointed as potential therapeutic agents, but systematic evaluations on their acute toxicity are yet to be reported. In order to evaluate the occurrence of systemic toxicity, groups of three female rats received oral GM-CP or GM-DR (300 mg kg-1), whereas the control group received vehicle. Since lethality was absent, other groups received doses of 2,000 mg kg-1, which also did not cause lethality. Collection of organs and blood samples were done at day 14. Dermal toxicity of the galactomannans was also evaluated (2,000 mg kg-1, n=3 per group), as well both mechanical hypernociception and inflammatory cell influx after administration of GM-CP or GM-DR via intra-articular route (200 µg, n = 5 per group). At the routes and doses employed, both galactomannans did not evoke physiological / behavioral changes or skin / joint inflammation. Since the LD50 was not inferior to 2,000 mg kg-1, both galactomannans are in the class 5 of the Globally Harmonized System for Classification and Labelling of Chemicals.

Different wavelengths of light on GnRH mRNA, LH, steroid hormones and egg lay in the ageing hens (Gallus gallus domesticus).

2016 ◽  
Vol 5 (06) ◽  
pp. 4597
Author(s):  
Janardhan Reddy Ippala* ◽  
Ashish Mishra ◽  
Mondal S. ◽  
David G. C. ◽  
Ravi Kiran G. ◽  
...  
Keyword(s):  
Steroid Hormones ◽  
Egg Production ◽  
Treated Group ◽  
Reproductive Period ◽  
Control Group ◽  
Blood Samples ◽  
Egg Formation ◽  
High Concentrations ◽  
Normal Spectrum ◽  
And Control

The aim of this study was to investigate the effects of red spectrum of light (650nm, treated n=12) and normal spectrum of light (450nm control=12) on circulating concentrations of luteinizing hormone (LH), progesterone (P4), estradiol (E2β), GnRH mRNA, pause days and egg production in birds later in the reproductive period from 92-102weeks of age. Twenty-four White Leghorn birds of same age group were divided into two groups of 12 in each as control and treated. Birds in the control group were exposed to normal spectrum of light (450nm of length) and birds in the treated group were exposed to red spectrum of light (650nm, treated n=12). Egg production and inter sequence pauses were recorded daily from both the groups. Plasma LH, E2β and P4 concentrations were estimated in blood samples collected at weekly intervals. At 97th weeks of age, blood samples from treated and control birds were obtained every 3 h for 36 h to study the surges of LH. It was found that plasma GnRH was higher (p < 0. 01) in treated birds with high concentrations of LH, its 3 h LH surges, E2β and P4 in plasma. Higher egg production, less pause days in treated birds may be the result of high GnRH associated with positively correlated responses of high concentrations of LH (with regular interval and duration of LH surges), E2β and P4 concentration required for completion of egg formation and oviposition. In conclusion, red spectrum of light enhanced GnRH mRNA (p < 0. 01), increased (p < 0. 01) steroid hormones and LH surges, for egg formation and oviposition and enabled the birds to lay more eggs even later in the productive period with the available resources under normal husbandry practices. 

A study of the luteolytic mechanism of the antiprogesterone RU486 during the late-luteal phase in pseudopregnant rats

1996 ◽  
Vol 150 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Y Nakamura ◽  
H Tamura ◽  
M Ono ◽  
K Shimamura ◽  
N Sugino ◽  
...  
Keyword(s):  
Subcutaneous Injection ◽  
Luteal Phase ◽  
Treated Group ◽  
Sesame Oil ◽  
Serum Prolactin ◽  
Control Group ◽  
Serum Progesterone ◽  
Blood Samples ◽  
Serial Blood ◽  
Late Luteal Phase

Abstract The purpose of this study was to examine the possible mechanism through which RU486 induces luteolysis during the late-luteal phase in pseudopregnant (PSP) rats. PSP rats received a subcutaneous injection of RU486 in sesame oil (5 mg/kg body weight) or sesame oil alone once a day between day 9 and day 11 of pseudopregnancy. Serial blood samples were collected on days 5, 9, 10, 11 and 12 and assayed for progesterone content. To examine the possible action of RU486 through a uterine and/or a pituitary (prolactin-dependent) mechanism, PSP rats and chronic hysterectomized PSP rats which had been hysterectomized before PSP induction received a subcutaneous injection of RU486 in sesame oil (5 mg/kg body weight), sesame oil alone, prolactin in 50% polyvinylpyrrolidone (15 IU/day), or RU486 and prolactin once a day between day 9 and day 11 of pseudopregnancy. Serial blood samples were collected on days 5, 9, 10 and 11 and assayed for progesterone content. Blood samples were also collected at 0400 h on day 12 and used for prolactin and progesterone determinations. To examine the direct effect of RU486 on corpus luteum and/or pituitary, hysterectomized rats underwent hypophysectomy and pituitary autotransplantation on dioestrus 1 and received a subcutaneous injection of RU486 in sesame oil or sesame oil alone for 3 days between day 21 and day 23 after surgery. Serial blood samples were collected on days 10, 21, 22, 23 and 24 and assayed for progesterone and prolactin contents. In ordinary PSP rats, serum progesterone levels were significantly (P<0·01) lower in the RU486-treated group than in the control group (9 ± 1 vs 53 ± 7 ng/ml; mean ± s.e.m.) on day 11. Serum prolactin levels at 0400 h on day 12 of pseudopregnancy were significantly (P<0·05) lower in the RU486-treated group than in the control group (16 ±4 vs 154 ±44 ng/ml; mean ± s.e.m.). The concomitant prolactin treatment reversed the luteolytic effects of RU486 on day 11 of pseudopregnancy. In hysterectomized PSP rats, RU486 also suppressed serum prolactin levels, and the concomitant prolactin treatment again reversed the luteolytic effects of RU486. In hysterectomized rats which were hypophysectomized and pituitary autotransplanted, RU486 treatment did not induce any significant changes in serum progesterone and prolactin levels. These results indicated that RU486 induced luteolysis during the late-luteal phase in PSP rats by suppressing prolactin secretion via a hypothalamic mechanism. Journal of Endocrinology (1996) 150, 93–98

scholarly journals Human Amniotic Membrane Is Not Suitable for the Grafting of Colon Lesions and Prevention of Adhesions in a Xenograft Rat Model

2017 ◽  
Vol 24 (4) ◽  
pp. 313-320 ◽  
Author(s):  
Dimitri Barski ◽  
Holger Gerullis ◽  
Thorsten Ecke ◽  
Gabriella Varga ◽  
Mihaly Boros ◽  
...  
Keyword(s):  
Perioperative Complications ◽  
Adhesion Formation ◽  
Xenograft Model ◽  
Treated Group ◽  
Surrounding Tissue ◽  
Control Group ◽  
Human Amniotic Membrane ◽  
Sprague Dawley ◽  
Colon Wall ◽  
Over Time

Introduction. New biological materials are needed for specific applications in reconstructive bowel surgery and for the prevention of adhesion formation. Amniotic membranes (AMs) are assumed to have a number of unique characteristics that enhance the ingrowth of the surrounding tissue. The aim of the present study was to provide proof of these qualities in a xenograft model. Materials and methods. A multilayer human AM (HAM) was applied to repair defined colon wall defects in Sprague-Dawley rats (n = 18). The control group was repaired with a suture (n = 6). The animals were killed humanely at 7, 21, and 42 days after implantation. Adhesions and perioperative complications were examined. Histological and immunohistological analyses were performed to assess a number of parameters, including degradation of the HAM, inflammation, graft rejection, and smooth muscle ingrowth. Results. Two rats in the treated group died. No other severe complications were observed. Adhesion formation was more prominently visible in the HAM group ( P < .05). The initially increased inflammation in the HAM group reduced over time but remained significantly increased ( P < .05). The HAM degraded over time and a subtle transient glomerulitis could be observed. Conclusion. HAMs were found to increase adhesion formation and were not suitable for bowel augmentation in the presented xenograft model.

scholarly journals Progesterone and estrogen levels in Awassi ewes treated with vaginal sponges

2013 ◽  
Vol 12 (1) ◽  
pp. 183
Author(s):  
A.A. Omar
Keyword(s):  
Veterinary Medicine ◽  
Jugular Vein ◽  
Treated Group ◽  
Control Group ◽  
Estrus Synchronization ◽  
Blood Samples ◽  
Elisa Technique

This study was conducted on10 healthy Iraqi Awassi ewes that examined by ultrasonography technique, with ages between 2 to 3 years, presented at the farm of the College of Veterinary Medicine, Al-Anbar University, Fallujah, during the period from the end of the February until the half of the March 2012. Vaginal sponges saturated with 40mg Flurogestone acetate were inserted in the vagina of each tested animals in order to induce estrus For synchronization for 14 days, at day 13of the experiment the animals were injected i.m. by Equine chorionic gonadotropine eCG (500 i.u.) then the sponges were removed and the animals injected i.m. with (200 i. u.) of Human chorionic gonadotropine (HCG). Blood samples were collected from jugular vein with vacutainer tubes each two days until the experiment was complete. Serum was collected after centrifugation with a speed 3000R/m for 10 minutes. Values of estrogen and progesterone hormones in serum were estimated by Enzyme Linked Immuno Sorbent Assay (ELISA) technique. Values of the estrogen and progesterone in the treated animals were (1.1932 ± 0.02380), (0.9558 ± 0.3282) respectively, while the levels of the two hormones for the control group was (1.1138 ± 0.02295) for the estrogen and (0.8702 ± 0.0152) for the progesterone. There was a significant different between the level of estrogen and progesterone hormones P < 0.05 in a treated group as a compare with the control group. It was concluded from this study that estrus synchronization of the ewes with vaginal sponge affected the values of estrogen and progesterone hormones in the serum

scholarly journals The Role of RANKL/RANK/OPG System in the Canine Model of Hip Periprosthetic Infection Osteolysis

2016 ◽  
Vol 39 (12) ◽  
pp. 619-624 ◽  
Author(s):  
Hao-Wei Zhang ◽  
Li Peng ◽  
Wen-Bo Li ◽  
Ke-Guan Song
Keyword(s):  
Synovial Fluid ◽  
Test Group ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Upward Trend ◽  
Septic Loosening ◽  
Periprosthetic Osteolysis ◽  
Significant Upward Trend ◽  
And Control ◽  
Over Time

Purpose We aimed to investigate whether the RANKL/RANK/OPG system is associated with the incidence of periprosthetic osteolysis with septic loosening, and to investigate the differences of RANKL/RANK/OPG system expression in synovial fluid surrounding the normal and septic loosening hip prosthesis in canine models. Methods Twelve healthy adult mongrel canines were divided into two groups: experimental and control. Femoral head and stem replacements were conducted on the right side in both groups. The experimental group received the bacteria fluid intra-articular injection and the other group received the same amount of saline in the same day. The synovial fluid samples were gathered at the 1st, 2nd, 4th, 8th, 12th, 16th and 19th week after the bacteria fluid intra-articular injection for enzyme-linked immunosorbent assay (ELISA), the expression of the RANKL/RANK/OPG system. Results Surgery on all animals was successful. Two dogs were excluded from the analysis of the result because of a surgery infection or death. The ELISA of the synovial fluid revealed that the ratio of RANKL/OPG showed a significant upward trend (p≤0.05) with time in the test group but the ratio of RANKL/OPG in the control group changed slowly over time (p>0.05). The ratio of RANKL/OPG value between the test and control group showed a significant upward trend, but had no statistical difference (p>0.05) over time. Conclusions It could be concluded that the RANKL/RANK/OPG system is correlated with the incidence of periprosthetic osteolysis with septic loosening. Consequently, imbalance RANKL/RANK/OPG system was related to periprosthetic osteolysis with septic loosening.

Effect of Tylvalosin on Blood Parameters in Healthy Broiler Chickens

2021 ◽  
Vol 19 (8) ◽  
pp. 141-144
Author(s):  
Mohammed Mosleh Shwaish ◽  
Ammar H. Salman ◽  
Asif Hasan Abdulrazaq
Keyword(s):  
Body Weight ◽  
Normal Saline ◽  
Broiler Chickens ◽  
Treated Group ◽  
Blood Parameters ◽  
Control Group ◽  
Broiler Chicks ◽  
Blood Samples

To evaluate the effects of Tylvalosin on blood parameters in healthy broiler chickens, twenty broiler chicks (Ross 308) aged 21 days old and weight 600-800 gm was divided into two equal groups, the first one was control group (G1) and the second one was treated group (G2). G1 dosed with 1ml/kg of body weight of normal saline while G2 dosed with 25mg/Kg of body weight of Tylvalosin. Blood samples were collected with EDTA tubes after 4 days of treatment. The results showed significant decrease in total WBCs counts in G2 treated group as compared with control group (G1), also the eosinophil showed a significant decrease in G2 as compared with G1, while other parameters didn’t show any significant differences. In conclusion, WBCs were decreased after treatment with tylvalosin.

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