scholarly journals The Utilization of Hormonal Interaction during Stress to Get Better Performance

Author(s):  
Alaa A Elnour
Keyword(s):  
1969 ◽  
Vol 47 (7) ◽  
pp. 1165-1169 ◽  
Author(s):  
A. E. DeMaggio ◽  
J. A. Freeberg

Whole buds and excised apices (bud scales removed) from dormant trees of Acer platanoides grow in sterile culture in long days but have different responses to gibberellic acid treatment. Bud growth is stimulated by the hormone in long and short days but apices are unaffected. Abscisic acid inhibits not only gibberellin-stimulated bud growth but also the photoperiodically stimulated growth of apices.


2015 ◽  
Vol 224 ◽  
pp. 96-103 ◽  
Author(s):  
Fumiyo Toyoda ◽  
Itaru Hasunuma ◽  
Tomoaki Nakada ◽  
Shogo Haraguchi ◽  
Kazuyoshi Tsutsui ◽  
...  

Medicina ◽  
2021 ◽  
Vol 57 (1) ◽  
pp. 66 ◽  
Author(s):  
Abdelaziz Ghanemi ◽  
Mayumi Yoshioka ◽  
Jonny St-Amand

Obesity represents a health problem resulting from a broken balance between energy intake and energy expenditure leading to excess fat accumulation. Elucidating molecular and cellular pathways beyond the establishment of obesity remains the main challenge facing the progress in understanding obesity and developing its treatment. Within this context, this opinion presents obesity as a reprogrammer of selected neurological and endocrine patterns in order to adapt to the new metabolic imbalance represented by obesity status. Indeed, during obesity development, the energy balance is shifted towards increased energy storage, mainly but not only, in adipose tissues. These new metabolic patterns that obesity represents require changes at different cellular and metabolic levels under the control of the neuroendocrine systems through different regulatory signals. Therefore, there are neuroendocrine changes involving diverse mechanisms, such as neuroplasticity and hormonal sensitivity, and, thus, the modifications in the neuroendocrine systems in terms of metabolic functions fit with the changes accompanying the obesity-induced metabolic phenotype. Such endocrine reprogramming can explain why it is challenging to lose weight once obesity is established, because it would mean to go against new endogenous metabolic references resulting from a new “setting” of energy metabolism-related neuroendocrine regulation. Investigating the concepts surrounding the classification of obesity as a neuroendocrine reprogrammer could optimize our understanding of the underlying mechanisms and, importantly, reveal some of the mysteries surrounding the molecular pathogenesis of obesity, as well as focusing the pharmacological search for antiobesity therapies on both neurobiology synaptic plasticity and hormonal interaction sensitivity.


1971 ◽  
Vol 49 (9) ◽  
pp. 1727-1731 ◽  
Author(s):  
A. Ali ◽  
R. A. Fletcher

Growth of cotyledonary buds in soybean plants is controlled by an interaction between hormones and is dependent on age of the plant and meristematic activity of the buds. Indoleacetic acid (IAA) applied to the cut surface of decapitated 7-day-old plants does not inhibit the growth of buds which are actively undergoing mitosis. Growth is inhibited, however, when IAA is applied in combination with benzyl-adenine(BA) and this inhibitory effect is minimized by gibberellic acid (GA). In 16-day-old plants where mitosis in the buds has ceased IAA alone inhibits bud growth. In both 7- and 16-day-old decapitated plants, application of GA, alone or in combination with BA promotes growth of the buds. Inhibited buds have two peroxidase isoenzymes with pronounced activity. The activity of one of these decreases when the buds are released from dominance. Benzyladenine applied directly to inhibited buds initiates growth in 16-day-old intact plants and this growth is further enhanced when GA is applied 48 h after BA treatment. The enhanced growth by GA is prevented if 5-fluorouracil (5-FU) or 5-fluorodeoxyuridine (5-FDU) are applied before but not after the GA treatment. These results indicate that the hormones have a sequential role in releasing buds from apical dominance.


2016 ◽  
Vol 20 (1) ◽  
pp. 34-37 ◽  
Author(s):  
Manju Puri ◽  
Dipti C Ekka

ABSTRACT Unexplained infertility is a term applied to an infertile couple whose standard infertility investigations and workup are normal. The aim of the study is to assess the role of hormones in women with unexplained infertility. The female reproductive system is regulated by a balanced hormonal interaction between the hypothalamus, anterior pituitary, and ovaries. Follicle stimulating hormone (FSH) and luteinizing hormone (LH) are important for ovulation and stimulation of secretion of estradiol and progesterone from the ovaries. Anti-Müllerian hormone (AMH) is an important marker to predict the ovarian reserve. The primary function of the ovary is the production of a mature and viable oocyte capable of fertilization, embryo development, and implantation. Fifty women diagnosed with unexplained infertility were enrolled as cases. These were age matched with 50 healthy fertile women volunteers. Body mass index (BMI) was found to be significantly higher in women with unexplained infertility. Serum FSH, LH, and estradiol were significantly higher in cases. LH:FSH ratio and serum AMH were significantly lower in cases as compared to controls. To conclude, serum AMH, FSH, and LH:FSH ratio indicated poor ovarian reserve in women with unexplained infertility. How to cite this article Ekka DC, Jain A, Puri M. Role of Hormones in Unexplained Infertility. Indian J Med Biochem 2016;20(1):34-37.


2021 ◽  
Vol 6 (2) ◽  
pp. 68-73
Author(s):  
Divya Singh Hada ◽  
Madhu S Ratre

Periodontium is physically and anatomically similar for both males and females. However, the response of periodontal tissues to hormones varies in both, due to different hormonal interaction. At different life stages of a female such as puberty, menstruation, pregnancy, menopause and post-menopause, use of contraceptives and hormone replacement therapies; sex hormones like estrogen and progesteron effects periodontal tissues.Sex hormones play significant roles in modulating the periodontal tissue responses, which can be minimized with good plaque control and with hormone replacement.


1994 ◽  
Vol 77 (3) ◽  
pp. 1445-1450 ◽  
Author(s):  
S. Cassin ◽  
V. DeMarco ◽  
A. M. Perks ◽  
H. Kuck ◽  
T. M. Ellis

The present studies were designed to test the hypothesis that arginine vasopressin (AVP) can interact with hydrocortisone and 3,5,3 ′-triiodothyronine (T3) to induce maturation of lung liquid reabsorptive processes in fetal sheep < 130 days gestation. Lung liquid production rates were measured in chronically catheterized thyroidectomized fetal sheep during eight different experimental treatments. Each experiment consisted of a 2-h control period followed by a 5-h treatment period. Net secretion or reabsorption of lung liquid was measured by using impermeant marker dilution techniques. AVP alone (50 mU/kg bolus plus 5.0 mU.kg-1.min-1 i.v. infusion) does not alter lung liquid secretion in fetal sheep 125 +/- 0.72 (SE) days gestation. In contrast, AVP (same dose as above) with T3 (30 micrograms) and hydrocortisone (6.94 mg/min) depressed lung liquid secretion and caused reabsorption of fluid. T3 alone, T3 and hydrocortisone, T3 and AVP, hydrocortisone alone, hydrocortisone and AVP, and saline did not result in net lung liquid reabsorption over a 5-h treatment period. These investigations demonstrate that AVP, T3, and hydrocortisone interact to cause lung liquid reabsorption in immature fetal lungs.


Sign in / Sign up

Export Citation Format

Share Document