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hair related research references ||
testosterone related research references ||
melanin related research references
Pharmazie. 2003 Jul;58(7):507-11.
Interaction of quinidine, disopyramide and metoprolol with melanin in vitro in relation to drug-induced ocular toxicity.
Buszman E, Rozanska R.
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Silesia, Sosnowiec, Poland. ebuszmalam.katowice.pl
The aim of this work was to evaluate binding capacity of quinidine, disopyramide and metoprolol to melanin in vitro. The antiarrhythmics studied cause adverse reactions to the eye. Synthetic DOPA-melanin was used in the studies and a UV spectrophotometric method was employed to determine the drugs. The studies of the kinetics of the formation of quinidine-melanin, disopyramide-melanin and metoprolol-melanin complexes indicate that for all the complexes investigated the maximum time to reach reaction equilibrium is 24 h. Binding parameters, i.e., the numbers of independent binding sites and the association constants were determined on the basis of the Scatchard plots. An analysis of the binding curves obtained supports our conclusion that both strong (n1) and weak (n2) binding sites are involved in the formation of the complexes investigated. The total numbers of binding sites in synthetic DOPA-melanin complexes with quinidine, disopyramide and metoprolol were 0.525, 0.493 and 0.387 micromol/mg, respectively. The quinidine-melanin complex is characterized by greater stability (K1 = 3.00 x 10(5) M(-1), K2 = 1.75 x 10(3) M(-1)) in comparison with biopolymer complexes with disopyramide (K1 = 1.12 x 10(4) M(-1), K2 = 6.04 x 10(2) M(-1)) and metoprolol (K1 = 1.42 x 10(4) M(-1), K2 = 7.89 x 10(2) M(-1)). The ability of these drugs to form complexes with melanin in vitro may be one of the reasons for their ocular toxicity in vivo, as a result of their accumulation in melanin in the eye.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12889538&dopt=Abstract
Schweiz Arch Tierheilkd. 2003 Jul;145(7):336-9.
[In Process Citation]
[Article in German]
Camenzind D, Winzap B, Hassig M.
Abteilung fur Ambulanz und Bestandesmedizin, Departementes fur Nutztiere, Universitat Zurich.
This work describes findings in a fattened calf, which were seen in a routine slaughter. The most important findings by the meat inspector were diffuse, black spots between 2 and 70 mm in diameter. This hyperpigmentation was observed on the entire carcass as well as on the outside and inside of all internal organs. Removal of the spinal cord produced black colored liquor. Subsequent microbiological examination of the meat resulted in sterile findings. The muscle pH was 5.8. On histological examination many macrophages containing melanin were found in the lung and liver. Based on these findings the diagnosis of Melanosis maculosa was made.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12894607&dopt=Abstract [PubMed - in process]
J Investig Dermatol Symp Proc. 2003 Jun;8(1):76-9.
Fate of melanocytes during development of the hair follicle pigmentary unit.
Botchkareva NV, Botchkarev VA, Gilchrest BA.
Department of Dermatology, Boston University School of Medicine, Boston, MA 02118, USA.
During hair follicle morphogenesis, melanocyte precursors migrate into developing hair follicles and give rise to differentiated melanocytes that actively produce and transport pigment into the keratinocytes that form the hair shaft; however, patterns of melanocyte proliferation and differentiation during formation of the hair pigmentation unit remain to be elucidated. Using multicolor confocal microscopy and double immunofluorescence of melanogenic proteins (tyrosinase-related proteins 1 and 2, tyrosinase) and the proliferative marker Ki67, we have studied melanocyte development in C57BL/6 mouse embryonic hair follicles. Proliferating melanocyte precursors (tyrosinase-related protein-2/Ki67+ cells) are seen in the hair follicles at stages 1-2 of morphogenesis, as follicular invagination begins. In stage 3-4 hair follicles, the majority of intrafollicular melanocytes remain tyrosinase-related protein-2+ and Ki67+, whereas some located adjacent to the forming dermal papilla begin to express tyrosinase-related protein-1, an early marker of differentiation. Melanin granules appear in stage 5 hair follicles coincident with tyrosinase expression in nonproliferating tyrosinase-related protein-2+/tyrosinase-related protein-1+ melanocytes. Stage 6-8 hair follicles, those actively producing hair, show nonproliferating tyrosinase-related protein-2+ melanocytes in the bulge area, tyrosinase-related protein-2+/tyrosinase-related protein-1+ melanocytes in the outer root sheath, and tyrosinase-related protein-2+/tyrosinase-related protein-1+/tyrosinase+ melanocytes above the dermal papilla. These data suggest that melanocyte precursor cells proliferate extensively at the onset of follicle development. Progeny of these cells migrate down the developing follicle, differentiating further until reaching the area immediately above the dermal papilla, where fully differentiated nonproliferative melanin-producing melanocytes persist, contributing pigment to the growing hair shaft.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12894999&dopt=Abstract [PubMed - in process]
The most ostensive feature that distinguishes us human from chimps and other primates is the lack of bodily hair. During evolutionary process, we have lost the majority of hair. Hair is no longer an essential part of our body, just like appendix. What little hair we still have on our scalp and a few other bodily parts is still regarded as significant for reasons other than biological necessity. Hair loss is naturally accompanied by aging process, although the extent of hair loss and the timing of onset vary widely among individuals. Thus, loss of hair and baldness is considered as a symbol of maturity or old age. Like winkles and other signs of aging, hair loss is not welcome by most people, because we don't welcome aging, and being perceived as an aging person. However, it is alopecia, or premature hair loss that especially concerns certain people.
Hair Million is a blend of Asian herbs that wards off hair loss and promotes hair growth. Of various approaches to hair restoration, Hair Million offers advantages including low cost compared with other methods or drugs, and safety, because it is made of safe and healthy herbs.
DHEA is a natural hormone, and it is produced in our body by the adrenal glands.
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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Lutein ||
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Natural herbal formula for hair loss problems ||