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Topic: Follicle

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	hair biology - hair follicle structure
		The total number of hair follicles for an adult human is estimated at 5 million with 1 million on the head of which 100,000 alone cover the scalp.
		The hair follicle penetrates the dermal layer of the skin composed of fibroblast cells and collagen connective tissue interspersed with blood vessels, sweat glands and sensory nerves.
		When a hair follicle is not producing a fiber the DP cells lose much of their cytoplasm and become inactive.
	www.keratin.com /aa/aa007.shtml (1704 words)

	Antral Follicle Counts and IVF Stimulation Response
		Presumably, the number of antral follicles visible on ultrasound is indicative of the relative number of microscopic (and sound asleep) primordial follicles remaining in the ovary.
		Antral follicle counts are a good predictor of the number of mature follicles that we will be able to stimulate in the woman's ovaries when we administer the injectable FSH medications that are used for in vitro fertilization.
		At least in some women, the antral follicle count may be a good predictor of the number of eggs remaining in the ovaries, as well as the quality of those eggs.
	www.advancedfertility.com /antralfollicles.htm (2027 words)

	Can Egg Follicle Size Indicate Cow Fertility?
		As the follicle grows, the estrogen eventually reaches a threshold level that causes the cow to be in heat.
		Perry measured their ovulating follicles when they were induced to ovulate, but before artificial insemination.
		However, it appears that if the follicle is capable of ovulating naturally, it doesn't matter what size it is. A cow in standing estrus with an 11-mm follicle has the same chance of becoming pregnant and maintaining the pregnancy as a cow with a 16-mm follicle.
	www.ars.usda.gov /is/ar/archive/apr03/cow0403.htm (1042 words)

	follicle stimulating hormone (injectable)
		Follicle stimulating hormone is used to stimulate a follicle (egg) to develop and mature.
		Follicle stimulating hormone is also used to stimulate the development of multiple eggs for in vitro fertilization.
		Follicle stimulating hormone is in the FDA pregnancy category X. This means that follicle stimulating hormone is known to cause birth defects in an unborn baby (when used beyond the period of ovulation).
	hw.healthdialog.com /kbase/multum/d04043a1.htm (1374 words)

	Hair and Follicle Cloning a 2004 Update
		The follicles are then dissected to isolate a small ball of cells at the base of each follicle called the dermal papilla.
		A new hair follicle is made from epithelial cells, but the development and cycling of the follicle is determined by dermal papilla cells.
		It might be possible one day to cause new hair follicle formation by applying skin with a chemical signal that triggers the resident dermal cells to return to their embryogenic days, but such a treatment approach is not likely for a long time.
	www.hairlosstalk.com /newsletter/article240.htm (905 words)

	The Ovarian Follicle 2
		Schroll down the page to follow the follicles during their maturation from primary follicles to secondary follicles and, finally, to the corpus luteum.
		The blue arrow follows the the ovarian follicles from their maturation (from primary follicles) to their eventual demise (as the corpus luteum).
		The corpus luteum is the enlarged remnant of the secondary (Graafian) follicle following ovulation (the release of the oocyte).
	www.uoguelph.ca /zoology/devobio/210labs/ovary4.html (357 words)

	follicle stimulating hormone-ganirelix Consumer Drug Information (Site not responding. Last check: 2007-10-12)
		Follicle stimulating hormone and ganirelix are used together in the treatment of infertility.
		Follicle stimulating hormone and ganirelix should be prescribed by a doctor experienced in infertility treatment.
		Follicle stimulating hormone may be administered as a subcutaneous (under the skin) or intramuscular injection (injection into the muscle).
	www.drugs.com /MTM/follicle_stimulating_hormone_ganirelix.html (1603 words)

	The World of Hair - Hair Structure - Follicle - Hair Bulb
		A hair follicle is a tiny cup-shaped pit buried deep in the fat of the scalp.
		The temperature around the follicle is normal body temperature, and is not affected by cold or hot weather.
		As the developing hair moves upwards in the follicle the melanin is carried upwards in the inner part of the hair.
	www.pg.com /science/haircare/hair_twh_12.htm (396 words)

	Controls of Hair Follicle Cycling -- Stenn and Paus 81 (1): 449 -- Physiological Reviews
		In contrast to the epithelial compartment of the follicle and the endothelial cells in the papilla (444), the fibroblastic
		follicle to keratinize (63, 357), encloses the shaft-sheath
		follicles), and organisms that inhabit the pilary canal (422).
	physrev.physiology.org /cgi/content/full/81/1/449 (10668 words)

	Follicle.com - Article: Androgenetic Alopecia in Men and Women: An Overview of Cause and Treatment
		The hair follicle comprises the dermal papilla which invaginates into the base of the follicle where rapidly dividing matrix cells are located (see Figure 1).
		Aromatase, present in the outer root sheath of the hair follicle, is another enzyme that plays an important function in androgenetic alopecia.
		Surgical treatments for AGA, including hair follicle transplantation, have been increasingly refined in the past several years and are beyond the scope of this article.
	www.follicle.com /section2/2_2.html (2748 words)

	Hair follicle stem cells contribute to wound healing
		Using an animal model, the researchers discovered that stem cells in the hair follicle are enlisted to help heal wounds in the skin.
		What remained a mystery was the exact nature of the origins of the new cells-specifically, what percentage stems from the deep follicle and what percentage from the epidermis near the wound.
		Cotsarelis' team found that adult stem cells from the lowest portion of the hair follicle, or "bulge," quickly ascend the follicle in response to wounding and ultimately comprise about 30 percent of the new cells in a wound when it first starts to heal.
	www.eurekalert.org /pub_releases/2005-12/uops-hfs120105.php (839 words)

	Antral Follicle Count and Serum Follicle-Stimulating Hormone Levels to Assess Functional Ovarian Age -- Chow et al. 104 ...
		Antral follicle counts by transvaginal ultrasonography are related to age in women with proven natural fertility.
		The significance of the number of antral follicles prior to stimulation in predicting ovarian responses in an IVF programme.
		Basal antral follicle number and mean ovarian diameter predict cycle cancellation and ovarian responsiveness in assisted reproductive technology cycles.
	www.greenjournal.org /cgi/content/full/104/4/801 (1633 words)

	Menstrual Cycle Proves More Complex
		Ovulation occurs when an egg is released from a follicle that develops in the ovaries.
		Hormones trigger the egg's release from a mature follicle.
		The researchers found that 68% of the women exhibited two waves of follicle development during their cycle, and 32% exhibited three waves.
	www.webmd.com /content/article/70/81114.htm (518 words)

	Response of Estradiol and Inhibin to Experimentally Reduced Luteinizing Hormone During Follicle Deviation in Mares -- ...
		± 0.3 mm; 3) diameter of the second-largest follicle
		of follicle deviation was not altered by the progesterone-induced
		Response of follicles to experimental suppression of FSH during follicular deviation in cattle.
	www.biolreprod.org /cgi/content/full/65/2/426 (5552 words)

	The Hedgehog and the hair follicle: a growing relationship -- Dlugosz 104 (7): 851 -- Journal of Clinical Investigation
		New findings suggest that Shh is also capable of operating in adult skin, where it may be involved in triggering reentry into the active growth phase of the hair cycle, (anagen).
		follicle is a diminutive organ consisting of a sebaceous gland,
		Reynolds, A.J., and Jahoda, C.A. Cultured dermal papilla cells induce follicle formation and hair growth by transdifferentiation of an adult epidermis.
	www.jci.org /cgi/content/full/104/7/851 (1882 words)

	Bone Morphogenetic Protein Signaling Regulates Postnatal Hair Follicle Differentiation and Cycling -- Guha et al. 165 ...
		B: Hair follicles are in morphogenesis stage 8 in both genotypes, and hair shafts penetrate the epidermis (a, b).
		Analysis of postnatal hair follicle development and cycling shows that inhibition of BMP signaling by Noggin misexpression in hair follicles results in premature catagen onset and early onset of the first anagen phase.
		At postnatal day 29, the wild-type follicles reveal telogen hair follicles with normal club hair formation (arrows, i), while nontylotrich hair follicles of transgenic mice are in late stages of anagen development (j).
	ajp.amjpathol.org /cgi/content/full/165/3/729 (6370 words)

	Gene expression profiling gets to the root of human hair follicle stem cells -- Cotsarelis 116 (1): 19 -- Journal of ...
		Cyclical changes in hair follicle growth are divided into different stages, referred to as anagen, catagen, telogen, and exogen.
		Hair follicle stem cells localize to the bulge at the bottom of the permanent follicle at the site of arrector pili muscle attachment.
		Stem cells in the hair follicle bulge contribute to wound healing but not to homeostasis of the epidermis.
	www.jci.org /cgi/content/full/116/1/19 (2138 words)

	follicle stimulating hormone (injectable) - [Medication]
		Store unmixed vials of follicle stimulating hormone at room temperature or in the refrigerator away from light, moisture, and heat.
		There are no restrictions on food, beverages, or activity during treatment with follicle stimulating hormone unless otherwise directed by your doctor.
		Follicle stimulating hormone is available with a prescription under the brand names Follistim, Follistim AQ Cartridge and Gonal-F. Other brand or generic formulations may also be available.
	www.peacehealth.org /kbase/multum/d04043a1.htm (1332 words)

	Water Permeability of an Ovarian Antral Follicle Is Predominantly Transcellular and Mediated by Aquaporins -- McConnell ...
		Water Permeability of an Ovarian Antral Follicle Is Predominantly Transcellular and Mediated by Aquaporins -- McConnell et al.
		Water Permeability of an Ovarian Antral Follicle Is Predominantly Transcellular and Mediated by Aquaporins
		O and inulin taken in by the follicles over a period of 20 min.
	endo.endojournals.org /cgi/content/full/143/8/2905 (4925 words)

	Vascular Endothelial Growth Factor Stimulates Preantral Follicle Growth in the Rat Ovary -- Danforth et al. 68 (5): ...
		of primary and secondary preantral follicles was measured.
		Human follicle fluid vascular endothelial growth factor concentrations are correlated with luteinization in spontaneously developing follicles.
		Cullinan-Bove K, Koos RD. Vascular endothelial growth factor/vascular permeability factor expression in the rat uterus: rapid stimulation by estrogen correlates with estrogen-induced increases in uterine capillary permeability and growth.
	www.biolreprod.org /cgi/content/full/68/5/1736 (3676 words)

	ScienceDaily: Hair Follicle Stem Cells Contribute To Wound Healing
		Science Daily — Hair follicle stem cells are important contributors to the wound-healing process, according to new research by investigators at the University of Pennsylvania School of Medicine.
		Hair follicle -- A hair follicle is part of the skin that grows hair by packing old cells together.
		Attached to the follicle is a sebaceous gland, a tiny sebum-producing gland found everywhere except on the palms,...
	www.sciencedaily.com /releases/2005/12/051201224113.htm (2028 words)

	MedlinePlus Medical Encyclopedia: Furuncle
		A furuncle is an infection of a hair follicle.
		Damage to the hair follicle allows these bacteria to enter deeper into the tissues of the follicle and the subcutaneous tissue.
		Furuncles may occur in the hair follicles anywhere on the body, but they are most common on the face, neck, armpit, buttocks, and thighs.
	www.nlm.nih.gov /medlineplus/ency/article/001474.htm (781 words)

	Implanted hair follicle stem cells form Schwann cells that support repair of severed peripheral nerves -- Amoh et al. ...
		the follicle, migrate and proliferate to repopulate the infundibulum
		The vibrissa follicle bulge area was isolated from the vibrissa
		follicle stem cell colonies and of the frozen mouse vibrissa
	www.pnas.org /cgi/content/full/102/49/17734 (2750 words)

	Dr. Koop - Hair follicle anatomy
		At the base of the hair follicle are sensory nerve fibers that wrap around each hair bulb.
		Sebaceous glands are also associated with each hair follicle that produce an oily secretion to help condition the hair and surrounding skin.
		The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition.
	www.drkoop.com /ency/93/ImagePages/9703.html (301 words)

	ALZET® Bibliography - Administration of Follicle Stimulating Hormone
		P2321 Ishimatsu,M., Nakamura,Y., Kato,H. Continuous luteinizing hormone infusion prevents atretic changes of the follicles during superovulation in hamsters.
		Endocrine J. >>> Follicle stimulating hormone, human; Luteinizing hormone; PBS; Albumin, bovine serum; SC; hamster; 2001; 4 days; controls received mp w/ vehicles only; agents infused alone and in combination; human LH used.
		P0858 Wubishet,A., Graves,C.N., Spahr,S.L., Kesler,D.J. Continuous subcutaneous infusion of follicle stimulating hormone as a method of superovulating dairy cows.
	www.alzet.com /bibliography/FSH.php (1303 words)

	Fruit Terminology (Part 1)
		The single carpel of a follicle splits open along one seam.
		It is easy to see that the single carpel of a follicle is a modified, seed-bearing leaf (megasporophyll).
		The silique is an elongate fruit composed of two carpels separated by a seed-bearing partition.
	waynesword.palomar.edu /termfr1.htm (1234 words)

	Follicle Disorders - Keratosis Pilaris - DermatologyChannel (Site not responding. Last check: 2007-10-12)
		Keratosis pilaris is a condition in which the hair follicles become blocked with hair and dead cells from the outermost layer of skin (epidermis).
		The follicles redden and inflame causing bumps (papules) to develop.
		Fruit acid creams (e.g., salicylic acid) are sometimes effective in unplugging the follicles.
	www.dermatologychannel.net /follicle/keratosis.shtml (286 words)

	Follicle Disorders - DermatologyChannel (Site not responding. Last check: 2007-10-12)
		Muscles, oil glands (sebaceous glands), and nerves extend from the follicle into the next layer of the skin — the dermis.
		Inside the follicles, sebum (oil) carries the dead cells to the surface.
		Some contain salicylic acid, which helps to normalize follicle shedding and to exfoliate the top layers of skin.
	www.dermatologychannel.net /follicle (782 words)

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