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Topic: Androgen receptor


  
 Androgen Action and the Androgen Receptor by John Berardi
During fetal development androgens are important in the appropriate differentiation of the internal and external male genital systems.
Finally, androgens also play many diverse roles in the adult including: behavioral roles (sexuality, aggression, mood, and cognitive function), regulation of spermatogenesis, regulation of bone metabolism, maintenance of muscle mass and muscle function, various effects on the cardiovascular system, and regulation of prostate cancer (Nieschlag and Behre 1998).
And these discoveries may contribute to the holy grail of androgen research; successful dissociation of the anabolic and androgenic affects of androgens.
http://www.mesomorphosis.com/articles/berardi/androgen-action-and-the-androgen-receptor.htm   (4450 words)

  
 .:SuperSteroid.com:. Androgen Receptor Regulation
This paper compares the normal state of the rat to the castrated state, and the muscle cytosol AR concentrations of the female rat to the intact (sham-operated) male rat.
• AR upregulation in response to supraphysiological levels of androgen in cell culture has repeatedly been observed in experiments using accurate assay methods and devoid of the above problems.
Therefore it is not surprising that those who do not train do not gain nearly as much muscle as those who do.
http://www.supersteroid.com/articles/androgen_regulation.htm   (4417 words)

  
 Androgen Insensitivity Syndrome
Normal responsiveness to androgen after birth does not prove that it was normal before birth.
A common practice is to remove the testes after puberty when feminization of the affected individual is complete.
However, the great majority of such negative searches very probably reflect a "timing" problem; in other words, the acquisition of normal testosterone synthetic capacity or normal androgen responsiveness is delayed beyond the critical periods for normal external and/or internal male genital differentiation.
http://www.geneclinics.org/profiles/androgen/details.html   (4792 words)

  
 eMedicine - Androgen Insensitivity Syndrome : Article by Bruce E Wilson, MD
Contact with other individuals who have AIS is another source of psychological and emotional support for the patient.
Administration of androgens in more masculinized patients with PAIS has been suggested but remains highly controversial.
Kaufman M, Pinsky L, Bowin A: Familial external genital ambiguity due to a transformation defect of androgen-receptor complexes that is expressed with 5 alpha- dihydrotestosterone and the synthetic androgen methyltrienolone.
http://www.emedicine.com/ped/topic2222.htm   (4799 words)

  
 Androgen receptor action
Other organs and tissues, such as skin, skeletal muscle, bone marrow, hair folices, and brain, are also under the influence of androgen.
A FXXLF motif in the AR N-terminal interacts with different regions of the AR AF-2/LBD to stabilize the hormone-receptor complex (He et al.
1999, 2000, 2001), and mediate androgen receptor-specific interactions with FXXLFmotif-containing coregulators, such as ARA 70/RFG, ARA 55/Hic-5, and ARA 54 (He et al
http://herkules.oulu.fi/isbn9514267621/html/x516.html   (1770 words)

  
 GenomicsHuGENetReviewsProstate CancerPubMed ID: 14726805
Androgens affect the human embryo in utero and lead to the development of male internal and external genitalia.
Moreover, androgen deprivation therapy, a common therapy used in the later stages of prostate cancer, has been associated with the AR.
Several potential interactions have also been explored, including molecular interactions, androgen deprivation therapy, and prostate-specific antigen expression.
http://www.cdc.gov/genomics/hugenet/reviews/Prostate.htm   (3156 words)

  
 Identification of androgen receptor protein and 5alpha -reductase mRNA in human ocular tissues -- Rocha et al. 84 (1): ...
to mediate almost all of the "classic" actions of androgens.
During the past several decades, it has become quite apparent that androgens exert a significant influence on the structural
It should also be noted that our experiments were performed with tissues obtained from many individuals, some of whom had
http://bjo.bmjjournals.com/cgi/content/full/84/1/76   (5736 words)

  
 Switch from antagonist to agonist of the androgen receptor blocker bicalutamide is associated with prostate tumour ...
In order to investigate the mechanisms relevant to the development of therapy-resistant tumours, we established a new tumour model which closely resembles the situation in patients who receive androgen ablation therapy.
These findings may have repercussions on the natural course of prostate cancer with androgen deprivation and on strategies of therapeutic intervention.
Advanced prostate cancer is treated by androgen ablation and/or androgen receptor (AR) antagonists.
http://www.nature.com/bjc/journal/v81/n2/abs/6690684a.html   (406 words)

  
 www.about-prostate-cancer.info Site Map
Is the Achilles’ Heel for Prostate Cancer Therapy a Gain of Function in Androgen...
Is the Achilles' Heel for Prostate Cancer Therapy a Gain of Function...
Is the Achilles’ Heel for Prostate Cancer Therapy a Gain of Function in Androgen Receptor Signaling?
http://www.about-prostate-cancer.info/sitemap   (3631 words)

  
 A Yeast Screen System for Aromatase Inhibitors and Ligands for Androgen Receptor: Yeast Cells Transformed with ...
Environmental Health Perspectives (EHP) is a monthly journal of peer-reviewed research and news on the impact of the environment on human health.
Research from other laboratories as well as our own has demonstrated that phytoestrogens such as flavones are competitive inhibitors of aromatase (13-15).
In contrast to aromatizable androgens, the nonaromatizable androgen, 5
http://www.ehponline.org/members/1999/107p855-860mak/mak-full.html   (4567 words)

  
 Epidermal Growth Factor Increases Coactivation of the Androgen Receptor in Recurrent Prostate Cancer -- Gregory et al. ...
This approach was effective in targeting ErbB2 for the
express AR-H874Y that retains wild-type sensitivity to androgens
to low androgen levels or anti-androgen treatment (37) or is
http://www.jbc.org/cgi/content/full/279/8/7119   (8217 words)

  
 Dr. Elizabeth Wilson
In addition, we are investigating certain environmental chemicals with androgen or antiandrogen activity that act as endocrine disruptors to influence human sexual development or behavior.
Our focus is to elucidate the molecular mechanisms of androgen receptor action.
We study the androgen receptor, the steroid receptor that mediates the biological effects of the androgens testosterone and dihydrotestosterone.
http://www.med.unc.edu/biochem/wilson.htm   (407 words)

  
 Increase of androgen-induced cell death and androgen receptor transactivation by BRCA1 in prostate cancer cells -- Yeh ...
androgen ablation condition for over 40 passages (26, 27).
responsible for the function of dimerization and androgen binding.
Indole-3-carbinol inhibition of androgen receptor expression and downregulation of androgen responsiveness in human prostate cancer cells
http://www.pnas.org/cgi/content/full/97/21/11256   (5307 words)

  
 ART-27, an Androgen Receptor Coactivator Regulated in Prostate Development and Cancer -- Taneja et al. 279 (14): 13944 ...
are no decipherable androgen response elements in the promoter
is by androgen ablation therapy, which causes prostate tissue
The use of a rat model of androgen depletion/reconstitution
http://www.jbc.org/cgi/content/full/279/14/13944   (6178 words)

  
 Elevated Endometrial Androgen Receptor Expression in Women with Polycystic Ovarian Syndrome -- Apparao et al. 66 (2): ...
As described in this study using in vitro culture systems, androgens
Contragestion and other clinical applications of RU-486, an antiprogesterone at the receptor.
Androgen receptors are known to be expressed in human endometrial
http://www.biolreprod.org/cgi/content/full/66/2/297   (6020 words)

  
 Androgen-Induced Growth Inhibition of Androgen Receptor Expressing Androgen-Independent Prostate Cancer Cells Is ...
response to androgen in LNCaP cells is unknown, but our preliminary
(4, 5), and alterations in the androgen receptor (AR) or AR signaling pathways (6, 7, 8).
Functional Analysis of 44 Mutant Androgen Receptors from Human Prostate Cancer
http://endo.endojournals.org/cgi/content/full/141/5/1699   (3620 words)

  
 University of Florida College of Health & Human Performance, Department of APK
However, recent evidence suggests that muscle and bone do not express the 5-a reductase, the enzyme responsible for that conversion.
Higher doses of T have not been studied in this population for fear of accelerating underlying prostate cancer.
The effects of androgens on the prostate required conversion of T to DHT.
http://www.hhp.ufl.edu/apk/personnel/sborst.htm   (728 words)

  
 Androgen receptor gene mutations in 46,XY females with germ cell tumours -- Chen et al. 14 (3): 664 -- Human ...
Seminoma in pubertal patient with androgen insensitivity syndrome.
(1996) The clinical and molecular spectrum of androgen insensitivity syndrome.
(1997) Molecular biology and function of the androgen receptor in genital development.
http://humrep.oxfordjournals.org/cgi/content/full/14/3/664   (3258 words)

  
 AR - Androgen receptor (dihydrotestosterone receptor; testicular feminization; spinal and bulbar muscular atrophy; ...
Therefore, androgen ablation and antiandrogen therapy are important in the treatment of the disease.
The androgen receptor: genetic considerations in the development and treatment of prostate cancer.
However, most patients go on to develop resistant androgen-independent prostate cancer.
http://www.cancerindex.org/geneweb/AR.htm   (277 words)

  
 Receptor (biochemistry) - Wikipedia, the free encyclopedia
Ligand-induced changes in the behavior of receptor proteins result in physiological changes that constitute the biological actions of the ligands.
Adrenoceptors (also known as Adrenergic receptors, for adrenaline, and other structurally related hormones and drugs)
This increases the current understanding of drug action at binding sites on the receptors.
http://en.wikipedia.org/wiki/Receptor_(biochemistry)   (367 words)

  
 Androgen Receptor antibodies from RDI Divison of Fitzgerald Industries Intl
Androgens exert their effects by binding to the androgen receptor (AR) which has been found in a variety of tissues, including reproductive organ tissue, central nervous system tissue, and skeletal muscle.
The expression of AR is reportedly inversely correlated with histologic grade i.e.
For In vitro Research Use Only-Not For Use in Diagnostics.
http://www.researchd.com/rdiabs/a1recpt.htm   (583 words)

  
 Androgen Receptor
The androgen re-ceptor may be amplified and therefore may be activated by reduced levels of dihydrotestosterone.
During androgen-independent progression, prostate cancer relies on various cellular pathways, some involving the androgen receptor and others bypassing it.
In the pathways that bypass the androgen receptor, the loss of PTEN reverses the inhibition of the phosphatidylinositol 3-kinase (PI3-K)–Akt pathway, permitting activated Akt to phos-phorylate Bad.
http://mayoresearch.mayo.edu/mayo/research/tindall_lab/androgen.cfm   (247 words)

  
 The Androgen Receptor CAG Repeat Polymorphism and X-Chromosome Inactivation in Australian Caucasian Women with ...
X-Chromosome Inactivation Patterns and Androgen Receptor Functionality Influence Phenotype and Social Characteristics as Well as Pharmacogenetics of Testosterone Therapy in Klinefelter Patients
alleles may amplify the androgenic response in ovarian tissues,
Zawadzki JK, Dunaif A 1992 Diagnostic criteria for polycystic ovary syndrome: towards a rational approach.
http://jcem.endojournals.org/cgi/content/full/87/1/161   (4083 words)

  
 Molecular Biology of the Androgen Receptor -- Gelmann 20 (13): 3001 -- Journal of Clinical Oncology
Androgen Stimulates Matrix Metalloproteinase-2 Expression in Human Prostate Cancer
for mediating the physiologic effects of androgens by binding
Molecular Biology of the Androgen Receptor -- Gelmann 20 (13): 3001 -- Journal of Clinical Oncology
http://www.jco.org/cgi/content/abstract/20/13/3001   (2391 words)

  
 fig003jem: Involvement of androgens and the androgen receptor in male-pattern baldness
Future therapies might involve the prevention of the binding of DHT to the androgen receptor (fig003jem).
Because the concentration of the androgen receptor also appears to be increased, more complexes are formed between androgen receptors and DHT, augmenting the regulation of androgen-dependent genes in the nucleus.
DHT binds to the androgen receptor, and the complex moves into the nucleus, where transcription control of androgen-dependent genes occurs.
http://www-ermm.cbcu.cam.ac.uk/02005148h.htm   (232 words)

  
 GenomicsHuGENetFact sheetsAndrogen Receptor Gene and Prostate Cancer
Susceptibility to prostate cancer: interaction between genotypes at the androgen receptor and prostate-specific antigen loci.
Short CAG repeats (less than or equal to 22 repeats) were found to be more prevalent in African-American males who are at high risk for prostate cancer and less prevalent in Asians who are at lower risk for this disease (2).
This observation reveals that variation in androgen receptor CAG repeat length differs considerably among human populations.
http://www.cdc.gov/genomics/hugenet/factsheets/FS_AR_prostate.htm   (1188 words)

  
 Androgen receptor
These compounds have also been shown to restore muscle weight and strength in castrated animals while not modifying muscle mass in sham (control) animals.
Some lead molecules are currently at the late pre-clinical stage, and have shown a strong dissociation in androgen receptor activity, avoiding negative effects on the prostate while keeping excellent bone protection activity.
One of ProSkelia’s lead programs is dedicated to the discovery of compounds that selectively modulate androgen receptor activity.
http://www.proskelia.com/rd_42.htm   (90 words)

  
 NEJM -- Mutation of the Androgen-Receptor Gene in Metastatic Androgen-Independent Prostate Cancer
Rahman, M., Miyamoto, H., Chang, C. Androgen Receptor Coregulators in Prostate Cancer: Mechanisms and Clinical Implications.
Functional studies of two of the mutant androgen receptors demonstrated
Fujimoto, N., Yeh, S., Kang, H.-Y., Inui, S., Chang, H.-C., Mizokami, A., Chang, C. Cloning and Characterization of Androgen Receptor Coactivator, ARA55, in Human Prostate.
http://content.nejm.org/cgi/content/abstract/332/21/1393   (3573 words)

  
 Rat Androgen Receptor (AR) Antiserum
Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum Rat Androgen Receptor (AR) Antiserum
Cat # AR11-P, Rat AR control peptide, SIZE: 100 ug
Antigen 22aa peptide of Rat AR ; Designated (
http://www.4adi.com/data/adeno/ar11.html   (353 words)

  
 Anabolic steroid information? You can found more info here..
This results in very little testosterone actually getting through to these parts of the body to bind to androgen receptors.
If you took away 5-AR from these tissues and blocked the formation of DHT, then you would see some dramatic changes in physiology.
Instead, it is quickly transformed into DHT, which then interacts with receptors.
http://anabolic-steroid-information.healz.com   (178 words)

  
 Upstate - Product #06-680 - Anti-Androgen Receptor, PG-21 ( 06680 )
Sex differences in the distribution of androgen receptors in the human hypothalamus.
Certificates of Analysis, Datasheets and Protocols: Choose a lot number below to review the Certificate of Analysis or product description for a specific lot including protocol information.
Click here to set your country preference and view prices.
http://www.upstate.com/browse/productdetail.asp?productid=06-680&apprefs=1   (173 words)

  
 Natural Hormone Replacement Therapy, Hrt Alternative, Menopause Treatment
Endocrin for Women also contains the correct balance of micro-nutritionals, rare and exotic Chinese Herbs and others such as Saw Palmetto (thought to control androgen excesses in women), plus other cofactors believed to be required by the female body in order to allow healthy physiological hormonal/sexual function and proper balance of biochemical and nutritional necessities.
The micro-nutritional, folliculinum (naturally occurring estrogen) seeks to aid the body in restoring normal estrogen hormonal balance.
Carilla, E., M. Briley, F. Fauran, et al., Binding of Permixon, “A new treatment for prostatic benign hyperplasia, to the cytosolic androgen receptor in the rat prostate,” J. Steroid Biochem., 20, 521-523, 1984.
http://www.vaxa.com/4005.cfm   (3077 words)

  
 NCRG : Research : Research Publications
Wu, S. and Comings, D.E. A common C-1018G polymorphism in the human 5-HT1A receptor gene.
Comings, D.E., Chen, C., Wu, S. and Muhleman, D. Association of the androgen receptor gene (AR) with ADHD, and conduct disorder.
Comings, D.E. Molecular heterosis as the explanation for the controversy about the effect of the DRD2 gene on dopamine D2 receptor density.
http://www.ncrg.org/research/publications.cfm   (1996 words)

  
 Endocrine Disruptor BRD Page (Final)
Notice to Reader: The BRDs contain data, a proposed list of substances, and minimum procedural standards that were reviewed by an independent Expert Panel in May 2002.
B4 - Standard Operating Procedure for the Rat Estrogen Receptor Equilibrium Exchange Assay
Please refer to the final report, ICCVAM Evaluation of In Vitro Test Methods For Detecting Potential Endocrine Disruptors: Estrogen Receptor and Androgen Receptor Binding and Transcriptional Activation Assays, (NIH Publication No. 03-4503), for the final ICCVAM recommended substances and minimum procedural standards.
http://iccvam.niehs.nih.gov/methods/endodocs/ed_brd.htm   (884 words)

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