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Interferon research abs 1 ||
Hemoglobin research abs ||
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hair research abs ||
hair related research references ||
testosterone related research references ||
melanin related research references
J Cutan Pathol. 1999 Mar;26(3):145-9.
Pigmented hidrocystoma of the eccrine secretory coil in the vulva: clinicopathologic, immunohistochemical and ultrastructural studies.
Kamishima T, Igarashi S, Takeuchi Y, Ito M, Fukuda T.
Department of Pathology, Tochigi Cancer Center, Utsunomiya, Japan.
A case of pigmented hidrocystoma of eccrine secretory coil is presented. A 47-year-old woman had developed a bluish black small nodule in the anterior portion of the labium minor a few years before entry. Microscopically, the cyst was lined by eosinophilic columnar epithelium with abundant brownish granules. There was a vague suggestion of decapitation secretion focally in the epithelial layer of cuboidal cells. This layer expressed distinct reactivity against CA19-9 with no reactivity for human milk fat globule-1 (HMFG-1). These features demonstrated that the cyst was not of apocrine nature but of eccrine derivation. In addition, positive immunoreaction for cytokeratin (CK)7, CK8 and CK19 defined the cyst as originating from the secretory coil of the sweat gland. Ultrastructurally, melanosomes in various stages were identified in most of the epithelial cells. These findings suggest that the present case was a hidrocystoma of eccrine secretory coil with abnormal melanin accumulation.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10235380&dopt=Abstract
J Soc Biol. 2003;197(1):57-61.
[In Process Citation]
[Article in French]
Bernard BA.
L'Oreal Recherche, Centre C. Zviak, 90 rue du General Roguet, 92110 Clichy.
The existence of a growth and regeneration cycle makes the hair follicle a true paradigm of tissue homeostasis. Analysis of about 9000 cycles led us to propose a stochastic model of human hair dynamics. The existence of hair cycles implies that stem cells must be cyclically activated and hair melanin unit has to be renewed. Using different markers, we were able to identify two distinct epithelial stem cell reservoirs, located in the upper and lower thirds of the anagen hair follicle outer root sheath. These two reservoirs fuse during the regression phase and individualize again in the new forming anagen hair follicle. Using a set of antibodies specific of melanocyte lineage and melanogenesis, pigmentation unit turnover was followed throughout the entire hair cycle. In the terminal anagen hair, active melanocytes were localized on top of the dermal papilla, while amelanotic melanocytes were identified in the upper third of the outer root sheath (ORS). Those amelanotic melanocytes located in upper ORS probably represented a melanocyte reservoir for successive hair generation, since at the induction of anagen phase, some melanocytes were committed to cell division and melanogenesis was turned on, but only in the nascent hair bulb, close to the dermal papilla.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12868268&dopt=Abstract [PubMed - in process]
Pediatr Dermatol. 2003 Jul-Aug;20(4):332-4.
Neurocutaneous melanosis with transposition of the great arteries and renal agenesis.
Koksal N, Bayram Y, Murat I, Dogru M, Bostan O, Sevinir B, Yazici Z.
Department of Pediatrics, Uludag University, Faculty of Medicine, Bursa, Turkey. nilgunuperonline.com
Neurocutaneous melanosis (NCM) is rare and is characterized by the proliferation of melanocytes in the central nervous system. A 6-day-old infant boy was referred to our department with giant congenital melanocytic nevi and convulsions. On physical examination the patient had a giant black-brown pigmented nevus covering his face, neck, scalp, shoulders, back, chest, and abdomen. Numerous satellite lesions were noted on the face, neck, and upper extremities. In the right bulbar conjunctiva, a brown plaque was present. Magnetic resonance imaging (MRI) showed hyperintense areas in the brain on short repetition time/short echo time sequences, compatible with intraparenchymal melanin deposits. No leptomeningeal abnormality was seen. Further investigation also revealed agenesis of the right kidney and transposition of the great arteries. Transposition of the great arteries, which has never been reported in NCM, may be an incidental finding. We present a case of NCM associated with agenesis of the right kidney and transposition of the great arteries.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12869156&dopt=Abstract [PubMed - in process]
The average human scalp is covered by approximatey 100,000 hair follicles. Each hair undergoes
hair cycle and normally 50-100 hairs randomly fall out a day, which is unnoticeable because lost hair is replaced by as many new hairs springing up daily. Hair loss results from the fall out of hair from the hair follicle. Alopecia or excessive, premature hair loss is the condition caused by many factors.
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 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 ||
Progesterone Cream ||
Natural herbal formula for hair loss problems ||