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Interferon research abs 1 || Hemoglobin research abs || Stem cell research abs || Nucleic acid research abs || Herpes research abs || Bronchitis research abs || Schizophrenia research abs || Tuberculosis research abs || Pneumonia research abs || Constipation research abs || Laxative research abs || hair research abs || hair related research references






Lasers Surg Med. 2003;32(5):399-404.
Hair removal with long pulsed diode lasers: a comparison between two systems with different pulse structures.

Fiskerstrand EJ, Svaasand LO, Nelson JS.

Center for Esthetic Laser Surgery, NO-7010 Trondheim, Norway. infstetisklaserkirurgi.no

BACKGROUND AND OBJECTIVES: The aim was to study hair removal efficacy, and possible side effects of two commercially available long pulsed diode lasers. The radiant exposure was selected to a value of 35 J/cm2, which is frequently used in the clinic in accordance with manufacturer's recommendations. STUDY DESIGN/MATERIALS AND METHODS: A prospective clinical study was performed on twenty-nine patients with hair color ranging from light brown to black on the upper lip. One half of the upper lip was randomly selected for treatment with the MedioStar laser; the contralateral half of the lip was treated with the LightSheer laser. Three treatments were performed at 6-8 week intervals. Percent hair reduction and acute- and long-term side effects were evaluated after treatment. RESULTS: The average hair reductions 6 months after the first treatment were 49% with the MedioStar laser and 48% with the LightSheer laser. No scarring or pigmentary change of the skin was observed after any of the treatments with either laser. However, differences in acute side effects such as degree of erythema and burned hairs were observed. CONCLUSIONS: No statistically significant differences in hair removal efficacy were observed. These results agree with mathematical modeling, which also offers a method to estimate hair removal efficacy and adverse effects for a range of hair characteristics and laser parameters. 2003 Wiley-Liss, Inc.


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12766964&dopt=Abstract [PubMed - in process]



J Insect Physiol. 1997 Mar;43(3):225-233.
The Effects of G Protein Modulators on the Labellar Taste Receptor Cells of the Fleshfly (Boettcherisca peregrina).

SHIMADA I I, KOGANEZAWA M.

Biological Institute, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-77, Japan

A nonhydrolyzable G protein activator (guanosine 5'-O-(3-thiotriphosphate); GTPgammaS) and a G protein inhibitor (guanosine 5'-O-(2-thiodiphosphate); GDPbetaS) were introduced into the labellar taste receptor cells of the fleshfly by treatment of their receptive membranes beneath the tip opening of the chemosensory hair with each reagent in 0.03% deoxycholate solution for 4 min. After treatment with GTPgammaS, the responses of the sugar receptor cell to D-glucose, D-fructose, L-phenylalanine and L-valine and that of the salt receptor cell to cyclic AMP were markedly enhanced, compared with those after treatment with deoxycholate alone. Treatment with GDPbetaS depressed these responses. These results strongly suggest that the responses are mediated by G protein. However, the response of the salt receptor cell to NaCl was not affected by treatment with either GTPgammaS or GDPbetaS, and thus the response to NaCl clearly is not elicited through a G protein-regulated mechanism. 1997 Elsevier Science Ltd. All rights reserved


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12769906&dopt=Abstract [PubMed - as supplied by publisher]



Nature. 1999 Mar 11;398(6723):152-6.
The mouse mahogany locus encodes a transmembrane form of human attractin.

Gunn TM, Miller KA, He L, Hyman RW, Davis RW, Azarani A, Schlossman SF, Duke-Cohan JS, Barsh GS.

Department of Pediatrics, Howard Hughes Medical Institute, Stanford University School of Medicine, California 94305-5428, USA.

Agouti protein and agouti-related protein are homologous paracrine signalling molecules that normally regulate hair colour and body weight, respectively, by antagonizing signalling through melanocortin receptors. Expression of Agouti is normally limited to the skin, but rare alleles from which Agouti is expressed ubiquitously, such as lethal yellow, have pleiotropic effects that include a yellow coat, obesity, increased linear growth, and immune defects. The mahogany (mg) mutation suppresses the effects of lethal yellow on pigmentation and body weight, and results of our previous genetic studies place mg downstream of transcription of Agouti but upstream of melanocortin receptors. Here we use positional cloning to identify a candidate gene for mahogany, Mgca. The predicted protein encoded by Mgca is a 1,428-amino-acid, single-transmembrane-domain protein that is expressed in many tissues, including pigment cells and the hypothalamus. The extracellular domain of the Mgca protein is the orthologue of human attractin, a circulating molecule produced by activated T cells that has been implicated in immune-cell interactions. These observations provide new insight into the regulation of energy metabolism and indicate a molecular basis for crosstalk between melanocortin-receptor signalling and immune function.


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10086356&dopt=Abstract



Mycopathologia. 2002;156(3):163-9.
Morphological characterization of in-vitro human hair keratinolysis, produced by identified wild strains of Chrysosporium species.

Mitola G, Escalona F, Salas R, Garcia E, Ledesma A.

Departamento de Biologia, Facultad de Ciencias, Universidad del Zulia, PO Box 526, Maracaibo 4011, Venezuela.

Chrysosporium species were isolated from soil and keratinized material. Primary isolation was performed following the general method of hair baiting on modified Czapek-agar media with washed, defated and sterilized human hair fragments added. Strains were maintained in test tubes of potato dextrose agar at 29 degrees C and cultivated on phytone yeast extract agar at 28 degrees C for 14 days for identification. Isolates were characterized using Van Oorschot's key. Keratinolytic activity was expressed following a subjective scale representing degree/severity of attack upon hair surface and presence of fungal structures observed in substrate. Culture results and characterization methods were effective for soil Chrysosporium strain isolation. A new hair attack mode is described. Of 71 keratinolytic fungal isolates, eight (12%) Chrysosporium species were identified. One keratinolytic Chrysosporium sp. isolate is yet to be identified.


online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12749579&dopt=Abstract








The average human scalp is covered by approximatey 100,000 hair follicles. Each hair undergoes Loss of hair itself does not pose critical health problems because biological role of human hair is relatively marginal. Hair on our scalp protects the head from mechanical shock, heat loss, and exposure to UV-light. The eyelashes and eyebrowes protect the eyes, and hair in the ear canal or the nasal passages help filter out particles and pathogens, thus protecting our internal organs. However, hair does play important social role: it is one of the major determinants of our appearance and identity in daily life. Fullness of hair also implicates or manifests physical integrity and youthfulness of the person. Losing hair could have more than just emotional impacts on individuals. The hair is a unique organ that goes through a characteristic cycle consisting of an immature phase, a growing phase called anagen, a transitional phase between the growing phase and the resting phase called catagen, and finally a resting phase called telogen in which the hair stops growing, waiting to fall out. 85-90% of hairs on our body are in anagen phase or growing phase, which lasts anywhere from two to five years. This phase is followed by a short regression phase, or catagen, which lasts 2-3 weeks. Approximately 1% of hair follicles are in catagen. Approximately 10-15% of hair follicles are in the resting phase, the telogen, which lasts about 3-5 months. Hair follicles typically goes through 10-20 asynchronous cycles during the lifetime. Persistent loss of more than 150 hairs would consist a state of hair loss, or alopecia, albeit it could be temporary.












DHEA has been suggested to provide numerous potential benefits. DHEA (or dehydroepiandrosterone) is converted into androgens (male hormones) or estrogens (female hormones) in the cells. Our bodies produce decreasing amount of DHEA as we get older. various health benefits: To deter aging, improve sexual function/erectile dysfunction, treat cognitive decline, enhance athletic performance, facilitate weight loss, improve strength, prevent osteoporosis, enhance immunomodulation for rheumatic conditions, and treat depression.






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