DreamPharm Products:
Lutein-20||Herbs for headache, fever, and migraine ||
Milk thistle||Saw palmetto||
Triple B Super Vision||Garlic, Ginger, and Grapeseed Extract||
Ginseng and Ginkgo||Hair Million||
DHEA||Coenzyme Q10||
Sleep Aid herbal formula - natural sleep aid||Herbal Breath - herbs for bad breath problems.||
Weight loss herbal formula for menopause and pms||Ginkgo biloba||
Colon cleansing, Laxative||ViaVita, Lecithin for healthy liver
Fatty acids resources:
Pathogen research abs 1 || Pathogen research abs 2 || Pathogen research abs 3 || Pathogen research abs 4 || Pathogen research abs 5 ||
Hormone and endocrine research abs 1 || Hormone and endocrine research abs 2 || Hormone and endocrine research abs 3 || Hormone and endocrine research abs 4 || Hormone and endocrine research abs 5
|| Follicle and follicular cells research abs 1
|| Interferon research abs 1
|| Hemoglobin research abs
|| Stem cell research abs
|| Nucleic acid research abs
Verh K Acad Geneeskd Belg. 2000;62(5):373-84.
Mechanistic study on the cytostatic and tumor cell differentiation-inducing properties of 9-(2-phosphonylmethoxyethyl)adenine (PMEA, adefovir)-collected publications.
Hatse S.
Laboratorium voor Virologie en Chemotherapie, Rega Instituut-KULeuven, Minderbroedersstraat 10-B-3000 Leuven.
The therapeutic potential of the antiretroviral drug 9-(2-phosphonylmethoxyethyl)adenine (PMEA, adefovir) for the treatment of human immunodeficiency virus (HIV)- and human hepatitis B virus (HBV) infections is currently being explored in advanced clinical trials. In the present study, we investigated the impact of PMEA on cellular functioning (cell cycle, nucleotide metabolism, nucleic acid synthesis, ...). Moreover, we have unraveled the molecular/biochemical basis underlying the marked differentiation-inducing activity of PMEA (and related analogues) in tumor cells. We could demonstrate that PMEA is endowed with potent antitumor activity in a highly aggressive in vivo tumor model. These findings open new perspectives for the possible application of this type of compounds in cancer chemotherapy. The fact that AIDS patients frequently develop certain types of differentiation-susceptible malignancies (e.g. Kaposi's sarcoma) further attests the clinical relevance of our observations.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11144686&dopt=Abstract
Endocrinology. 2001 Jan;142(1):89-97.
Down-regulation of hypothalamic corticotropin-releasing hormone messenger ribonucleic acid (mRNA) precedes early-life experience-induced changes in hippocampal glucocorticoid receptor mRNA.
Avishai-Eliner S, Eghbal-Ahmadi M, Tabachnik E, Brunson KL, Baram TZ.
Departments of Anatomy/Neurobiology, University of California at Irvine, Irvine, California 92697-4475, USA.
Early-life experiences, including maternal interaction, profoundly influence hormonal stress responses during adulthood. In rats, daily handling during a critical neonatal period leads to a significant and permanent modulation of key molecules that govern hormonal secretion in response to stress. Thus, hippocampal glucocorticoid receptor (GR) expression is increased, whereas hypothalamic CRH-messenger RNA (mRNA) levels and stress-induced glucocorticoid release are reduced in adult rats handled early in life. Recent studies have highlighted the role of augmented maternal sensory input to handled rats as a key determinant of these changes. However, the molecular mechanisms, and particularly the critical, early events leading from enhanced sensory experience to long-lasting modulation of GR and CRH gene expression, remain largely unresolved. To elucidate the critical primary genes governing this molecular cascade, we determined the sequence of changes in GR-mRNA levels and in hypothalamic and amygdala CRH-mRNA expression at three developmental ages, and the temporal relationship between each of these changes and the emergence of reduced hormonal stress-responses. Down-regulation of hypothalamic CRH-mRNA levels in daily-handled rats was evident already by postnatal day 9, and was sustained through postnatal days 23 and 45, i.e. beyond puberty. In contrast, handling-related up-regulation of hippocampal GR-mRNA expression emerged subsequent to the 23rd postnatal day, i.e. much later than changes in hypothalamic CRH expression. The hormonal stress response of handled rats was reduced starting before postnatal day 23. These findings indicate that early, rapid, and persistent changes of hypothalamic CRH gene expression may play a critical role in the mechanism(s) by which early-life experience influences the hormonal stress-response long-term.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11145570&dopt=Abstract
Water Sci Technol. 2003;47(5):155-60.
Establishment of a continuous model system to study Helicobacter pylori survival in potable water biofilms.
Azevedo NF, Vieira MJ, Keevil CW.
Environmental Healthcare Unit, School of Biological Sciences, University of Southampton, Southampton, UK.
Close association of the pathogen Helicobacter pylori in drinking water biofilms has been suggested. Using a two-stage water model, the survival and development of the pathogen in potable water biofilms was monitored. Filter sterilized tap water was used as the growth medium and the inoculum consisted of a naturally occurring consortium of microorganisms. Biofilms were generated on removable stainless steel coupons that were placed in the second vessel. Novel technology peptide nucleic acid (PNA) molecular probes were used to detect and locate the pathogen in the biofilms. The PNA-labelled oligonucleotide probes were highly specific, and complementary to the helix 6 region of H. pylori 16S rRNA. The pathogen was tracked in the biofilms using epifluorescence microscopy and episcopic differential interference contrast microscopy. Results show that H. pylori can successfully incorporate within biofilms and its presence was detected for up to five days after inoculation. PNA probes provided an easy and quick way of performing fluorescence in situ hybridisation assays in heterogeneous biofilms.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12701922&dopt=Abstract
Endocrinology. 2001 Jan;142(1):139-46.
Regulation of gonadotropin subunit gene transcription by gonadotropin-releasing hormone: measurement of primary transcript ribonucleic acids by quantitative reverse transcription-polymerase chain reaction assays.
Dalkin AC, Burger LL, Aylor KW, Haisenleder DJ, Workman LJ, Cho S, Marshall JC.
Division of Endocrinology, Department of Internal Medicine and the Center for Research in Reproduction, University of Virginia, Charlottesville, Virginia 22908, USA. acd6irginia.edu
GnRH regulates the synthesis and secretion of the pituitary gonadotropins LH and FSH. One of the actions of GnRH on the gonadotropin subunit genes (alpha, LHbeta, and FSHbeta) is the regulation of transcription [messenger RNA (mRNA) synthesis]. Gonadotropin subunit transcription rates increase after gonadectomy and following exogenous GnRH pulses. However, prior studies of subunit mRNA synthesis were limited by the available methodology that did not allow simultaneous measurement of gene transcription and mature mRNA concentrations. The purpose of the current studies was to: 1) develop a reliable and sensitive method for assessing transcription rates by measuring gonadotropin subunit primary transcript RNAs (PT, RNA before intron splicing); 2) investigate the PT responses to GnRH following castration or exogenous GnRH pulses; 3) characterize the half-disappearance time for the three PT species after GnRH withdrawal; and 4) correlate changes in PT concentration with steady-state gonadotropin subunit mRNA levels measured in the same pituitary RNA samples. Using oligonucleotide primers that flanked intron-exon boundaries, quantitative RT-PCR assays for each subunit PT species were developed. These assays require only ng amounts of RNA to measure each gonadotropin subunit PT and allow us to measure both PTs and steady-state mRNAs in a single pituitary RNA sample. Primary transcript concentrations in intact male rats showed a relative abundance of alpha > LHbeta congruent with FSHbeta, similar to the relationship found previously for mRNA levels. Additionally, each PT species was only 1-2% as abundant as the corresponding mRNA. One week after castration, gonadotropin subunit PT levels were increased (alpha: 3-fold, LHbeta: 6-fold, and FSHbeta: 3-fold) in a pattern similar to subunit mRNAs. Administration of GnRH antagonist to 7-day castrate male rats resulted in a rapid decline in PT concentrations with a half-disappearance time of 2.7 h for LHbeta and 0.8 h for FSHbeta, significantly faster than earlier measurements of the half-disappearance time for mature mRNA. Finally, in a GnRH-deficient male rat model, LHbeta and FSHbeta PT concentrations increased 4- to 6-fold 5 min after a GnRH pulse and then declined toward levels seen in control animals. These data indicate that the effects of GnRH on subunit gene transcription are an important determinant of gonadotropin regulation. The appearance and disappearance of PT RNA occurs more rapidly than changes in mature mRNA. Additionally, concentrations are elevated in long term castrates, and following an exogenous GnRH pulse the transcriptional burst is rapid and brief.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11145576&dopt=Abstract
Endocrinology. 2001 Jan;142(1):174-81.
Regulation of high density lipoprotein receptor messenger ribonucleic acid expression and cholesterol transport in theca-interstitial cells by insulin and human chorionic gonadotropin.
Li X, Peegel H, Menon KM.
Departments of Obstetrics and Gynecology and Biological Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.
The synthesis of androgens by theca-interstitial cells is stimulated by LH and the insulin/insulin-like growth factor I (IGF-I) system. An essential element of the steroidogenesis is the uptake of plasma cholesterol and transformation to steroid hormones. In the rat, the uptake of cholesterol by the theca-interstitial cells is mediated by the high density lipoprotein receptor. The goal of the present study was to examine whether insulin has any effect on cholesterol delivery into theca-interstitial cells. The effects of insulin and hCG on the expression of the high density lipoprotein receptor (SR-BI) messenger RNA (mRNA) and intracellular cholesterol levels were examined in rat theca-interstitial cells under in vivo and in vitro conditions. Twenty-five-day-old rats were treated with insulin, hCG, or insulin followed by hCG. The expression of SR-BI mRNA was then examined in ovaries enriched in theca-interstitial cell population by Northern blot analysis. Treatment with insulin increased the expression of SR-BI mRNA over that in controls treated with saline. hCG administration also increased the expression of SR-BI mRNA. A combination of insulin followed by hCG produced an even greater increase in SR-BI mRNA expression. Measurements of cellular cholesterol in the ovarian tissue showed an increase in total and free cholesterol levels in response to insulin treatment. As expected, administration of hCG produced a depletion of cellular cholesterol, and the depletion was even more pronounced in response to treatment with insulin and hCG. The effect of insulin and hCG on SR-SBI mRNA expression was then examined under in vitro conditions using primary cultures of theca-interstitial cells. Treatment with insulin produced an increase in SR-BI mRNA expression. As the cultured theca-interstitial cells were not able to maintain hCG receptors, hCG addition produced no increase in SR-BI mRNA expression. However, in the presence of insulin, these cells were able to maintain hCG receptors and readily responded to hCG to increase SR-BI mRNA expression. Although insulin alone produced a modest increase in total and free cholesterol levels, in the presence of insulin, hCG produced the expected depletion of cellular cholesterol content. The present study shows that insulin has a stimulatory effect on the expression of high density lipoprotein receptors in theca-interstitial cells, suggesting that one of the actions of insulin is to increase intracellular cholesterol, which is subsequently mobilized for androgen biosynthesis in theca-interstitial cells.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11145580&dopt=Abstract
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Lutein ||
Progesterone Cream ||
Natural herbal formula for hair loss problems ||