With distichiasis, the hair
follicles develop in abnormal locations, often deep within the meibomian glands.
Scientists have long believed that hair
follicles develop in the womb, and that no new follicles appear after birth.
The team studied skin cells, called dermal fibroblasts, that help hair
follicles develop, wounds heal, and generally maintain the structural integrity of skin.
There is a misconception that
a follicle develops in a single menstrual cycle.
Not exact matches
Follicle - stimulating hormones (FHS) help
develop the egg that is to be released by one of the ovaries, and it is the spike in Luteinizing Hormone (LH) that is detected in your urine, alerting you that ovulation is about to occur.
Eggs are produced by
follicles that
develop within a woman's ovaries.
When a woman's monthly menstrual cycle begins,
follicle - stimulating hormone prompts additional growth of certain
developing follicles.
The team
developed a new technique that allowed them to culture large numbers of hair
follicle germs — a precursor of
follicles — in the lab.
Before birth, mouse and human ovaries contain an abundant supply of germ cells, some of which will
develop into the eggs that will ultimately be released from
follicles during ovulation.
They took small samples from the ovaries of 10 women undergoing elective caesarian sections, and isolated 87
follicles, which they let
develop in a soup of nutrients.
They created mature eggs from partially
developed follicles.
While individual, already -
developed eggs die easily when frozen, immature
follicle eggs embedded in the ovarian tissue fare a lot better.
Previous studies, however, were not able to
develop tissue replacements that have hair
follicles because it is only present in embryonic organogenesis.
When estrogen is low,
follicles do not fully
develop and form cysts (fluid filled sacks) inside the ovaries.
Because the
follicles do not properly
develop and eggs are not released, fertility is compromised.
A healthy amount of estrogen is needed to fully
develop follicles and release an egg into the fallopian tubes.
Follicular Phase: Potential eggs begin to
develop in the ovaries inside small node - like structures called
follicles.
Women with PCOS are at a greater risk for
developing OHSS due to the already large number of
follicles on the ovary and the tendency for women with PCOS to over-respond to the hormones.
They are usually associated with hair
follicles and are particularly well
developed in certain areas such as the scalp, face, upper back and chest.
The hair shaft
develops as new cells form around the
follicle, push up and die.
In many women with PCOS, there is an increase in the number of this type of
follicle — in essence, the
follicles begin to
develop and then stall before they are ovulated.
Thyroid hormones work synergistically with
follicle - stimulating hormone to
develop healthy granulosa cells.
Keratosis pilaris
develops when keratin forms a scaly plug that blocks the opening of the hair
follicle.
They are believed to
develop due to blocked sebaceous glands, which secrete a lubricating oily matter (sebum) into hair
follicles to lubricate the skin and hair.
• Mange — When small mites live in the hair
follicles and skin of a hamster, they can
develop mange — a condition that causes dry, scaly skin and fur loss.
Adults lay eggs in the hair
follicle, larva and nymphs
develop in the oil glands and hair
follicle and then nymphs grow into adults where they live on the surface of the skin, oil glands and hair
follicle and lay more eggs.
Both dogs and cats — and other mammals, too — can
develop mange, an infestation caused by tiny mites that attach themselves to skin or hair
follicles.
The Demodex live in the hair
follicles and sebaceous glands; problems
develop when the number of mites exceeds that which is tolerated by the immune system.
It takes about a week for a puppy's immune system to start
developing, so the mites enter the puppy's hair
follicles while the immune system is
developing and then begin laying eggs and growing in number for months before you see any signs.