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Advances and perspectives in acne therapy.

Acne is one of the most common diseases in dermatology. It is of considerable esthetic significance, which explains the mental stress in affected patients. Although acne almost always heals spontaneously in early adulthood, treatment measures can shorten the course, reduce the severity of the disease, and avoid complications such as scarring. Treatment has changed substantially in recent years. In accordance with pathogenic principles, effective treatment is possible. In most patients, a combination of drugs aimed at correcting abnormal keratinization and reducing the proliferation of Propionibacterium acnes is sufficient to control the disease. For more severely affected patients with no response to this approach, therapy to suppress sebum production is indicated. Of all therapeutic modalities available, only oral isotretinoin alters the natural course of the disease. In acne inversa, surgical management should be undertaken as early as possible.

Acne Vulgaris↗

Physiology, pathophysiology, and anthropology/epidemiology of human earcanal secretions.

Two types of glands are found in the outer third of the human earcanal: sebaceous glands that produce sebum and modified apocrine glands that produce apocrine sweat. Together, these substances make up cerumen, which serves to clean, lubricate, and, to some extent, protect the earcanal from bacteria and fungus. Excessive/impacted cerumen can cause tinnitus, vertigo, itching, pain, external otitis, and hearing loss. Two populations are known to have a high incidence of excessive/impacted cerumen: individuals with mental retardation and the elderly. Anthropologists have used cerumen type to tract human migratory patterns and epidemiologists have related cerumen type to breast cancer.

Adult↗

Increased synthesis of cholesterol stearate in flanking organ from gonadectomized female hamsters treated with progesterone and 5 alpha-dihydroprogesterone.

We demonstrated for the first time that progesterone and 5 alpha-dihydroprogesterone stimulate [U-14C]glucose incorporation into lipids in gonadectomized female hamster flanking organs. We also found that cholesterol stearate is the major lipid synthesized female hamster flanking organs under progesterone and 5 alpha-dihydroprogesterone stimulation. In this manner, progesterone and 5 alpha-dihydroprogesterone alter the consistency of sebum from gonadectomized female glands.

5-alpha-Dihydroprogesterone↗