نتایج جستجو برای: growth hormones

تعداد نتایج: 877507  

2016
Jie Zhang Li Zhang Li Quan Wenxue Qi Yujie Jiang Sheng Jiang

Objective: This study aims to retrospectively analyze the correlation between levels of serum growth hormones and insulin-like growth factor-1 (IGF-1) and severity of retinopathy in type 2 diabetes patients reaching the goal of blood glucose control. Method: A retrospective analysis was adopted for 112 type 2 diabetes patients reaching the goal of blood glucose control in the past 3 years. All ...

Journal: :Trends in plant science 2012
Gloria K Muday Abidur Rahman Brad M Binder

The individual roles of auxin and ethylene in controlling the growth and development of young seedlings have been well studied. In recent years, these two hormones have been shown to act synergistically to control specific growth and developmental processes, such as root elongation and root hair formation, as well as antagonistically in other processes, such as lateral root formation and hypoco...

Journal: :Environmental Health Perspectives 1994
M Rodbell

-Previous studies have shown that various amine hormones are able to influence the growth rate of human colorectal carcinomas propagated as xenografts in immune-deprived mice, and it is now well known that the effects of many amine and other hormones are mediated by cyclic nucleotides, acting as second messengers within cells. In the present study the influence of various derivatives of cyclic ...

Journal: :Trends in plant science 2003
Patricia León Jen Sheen

Sugars modulate many vital processes that are also controlled by hormones during plant growth and development. Characterization of sugar-signalling mutants in Arabidopsis has unravelled a complex signalling network that links sugar responses to two plant stress hormones--abscisic acid and ethylene--in opposite ways. Recent molecular analyses have revealed direct, extensive glucose control of ab...

Journal: :Plant physiology 1994
K Chaloupková C C Smart

The growth regulator abscisic acid (ABA) can be used to induce dormant bud structures (turions) in the duckweed Spirodela polyrrhiza L. In this paper we show that during this process, ABA rapidly induces elevated levels of mRNA transcripts encoding a novel basic peroxidase. In addition, we show that in the presence of the cytokinin kinetin the maintained increase is attenuated. Kinetin not only...

Journal: :Saudi journal of biological sciences 2015
Elsayed Fathi Abd Allah Abeer Hashem Abdulaziz Abdullah Alqarawi Ali Hassan Bahkali Mona S Alwhibi

Pot experiments were conducted to evaluate the damaging effects of salinity on Sesbania sesban plants in the presence and absence of arbuscular mycorrhizal fungi (AMF). The selected morphological, physiological and biochemical parameters of S. sesban were measured. Salinity reduced growth and chlorophyll content drastically while as AMF inoculated plants improved growth. A decrease in the numbe...

Journal: :Current topics in behavioral neurosciences 2013
Timothy J Schoenfeld Elizabeth Gould

Stress is known to inhibit neuronal growth in the hippocampus. In addition to reducing the size and complexity of the dendritic tree, stress and elevated glucocorticoid levels are known to inhibit adult neurogenesis. Despite the negative effects of stress hormones on progenitor cell proliferation in the hippocampus, some experiences which produce robust increases in glucocorticoid levels actual...

2015
Samantha J. Richardson Roshen C. Wijayagunaratne Damian G. D'Souza Veerle M. Darras Stijn L. J. Van Herck

Thyroid hormones are key players in regulating brain development. Thus, transfer of appropriate quantities of thyroid hormones from the blood into the brain at specific stages of development is critical. The choroid plexus forms the blood-cerebrospinal fluid barrier. In reptiles, birds and mammals, the main protein synthesized and secreted by the choroid plexus is a thyroid hormone distributor ...

Fereydoun Azizi, Marzieh Ghafar Nejad,

Four year old girl was evaluated for precocious puberty. Breast development and pubic hair growth had started at age 2½ year, and had been followed by vaginal bleeding resembling periods. Gaf-au-lait spots were present in most of her skin surface. Bone x-rays showed multiple cysts in pelvis and the metaphysis of femur. Diagnosis of McCune-Albright syndrome was made. Concentrations of all hormon...

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