BACKGROUND: The epidermal permeability barrier necessary for terrestrial life resides in the intercellular spaces of the stratum corneum and is composed of lipids. OBJECTIVE: Since strrtum corneum lipid may be important for the permeability barrier, we studied the differences and effects of experimentally altered barrier function using acetone and tape-stripping technique. METHODS: The permeability barrier of hairless mouse was disrupted by tape-stripping and acetone treatment and the recovery rate was assessed by histochemical staining, electron microscopic examination and lipid analysis. RESULTS: Although the transepidermal water loss recovered completely by 48 hours in both of the acute models, acetone treated samples seem to have on over-all better recovery rate than tape-stripped samples. The return of barrier function to normal in both tape-stripped and acetone-treated skin was accompanied by a comparable return of normal nile red and ruthenium tetroxide staining. The amount of lipid in stratum corneum paralleled both the return of barrier function towards normal and the extent of prior damage to the barrier in acetone treated skin, yet, the lipid synthesis in tape-stripped skin showed a slower return of lipid content. CONCLUSION: The difference in the recovery rate of the two acute models may be due to the fact that acetone mainly extracts intercellular lipids, whereas, tape-stripping has a prolonged effect by removal of comeocyte in addition to the intercellular lipids. This shows the importance of comeocytes as well as the intercellular lipid bilayer in the recovery of normal barrier function.
Acetone* ; Animals ; Extracellular Space ; Lipid Bilayers ; Mice ; Mice, Hairless ; Permeability ; Ruthenium ; Skin ; Water

This study was undertaken to clarify whether the color changes of skin in summer are remarkable or not. The skin color of abdomen, extensor and flexor of forearm, forehead, and cheek were measured in 27 health male students who had never tanned their skin intentionally during this experiment with Color and Color Difference Meter(Nippon Denshoku Kogyo Ca. CP6R 1001-DP) which represents skin color as 'L', 'a', and 'b' values. The 'L', 'a', and 'b' values mean the degree of lightness, redness, and yellowness respectively. Measurements had been performed four times repeatedly from summer(june) to auturmn(October) with intervals of 6 weeks. The obtained values were evaluated with statistical method, and the results were sumrnarized as follows: l. Abdominal skin showed no significant color changes in this experiment. 2 Extensor and flexor skin of forearm showed significant decrease in lightness from July, and the degree of decrease was more remarkable on extensor skin than on flexor skin. The lighteness had not been recovered by October on extensor skin and by September on flexor skin. There was no significant change in redness and yellowness on both places in this experiment. 3. Forehead skin showed no significant change in lightness and yellowness in this experiment, and showed transient decrease in redness in July. 4. Cheek skin showed no significant change in lighteness and redness in this experiment, and showed transient increase in yellowness in October.
Abdomen ; Cheek ; Forearm ; Forehead ; Humans ; Intention ; Male* ; Skin* ; Triacetoneamine-N-Oxyl

No abstract available.
C-Reactive Protein* ; Child* ; Diagnosis, Differential* ; Humans ; Meningitis*

Sensitivity to estrogen has been described previously. The clinical picture is varied with pruritus, either generalized or localued or as urticaria. The hallmark of estrogen dermatitis is the cyclic premenstrual flare. The patient reported here had cyclic erythema multiforme-like lesions and showed a positive intradermal skin test to estrogen. A 20-year-old female patient presented with a periodic 5 year duration of skin lesions on both hands. The eruption commenced in the second half of the menstrual cycle, worsened through the luteal phase but the lesion almost disappeared during menstruation. An intradermal skin test to estrone showed positive results. However, a skin test with medroxyprogesterone acetate was negative. After systemic steroid and antihistamine therapy, the lesions were found to be significantly improved.
Dermatitis* ; Erythema ; Erythema Multiforme ; Estrogens* ; Estrone ; Female ; Hand ; Humans ; Luteal Phase ; Medroxyprogesterone Acetate ; Menstrual Cycle ; Menstruation ; Pruritus ; Skin ; Skin Tests ; Urticaria ; Young Adult

Stratum corneum lipids, which are enriched in sphingolipids, free fatty acids, and cholesterol, are required for epidermal barrier function. When the epidermal permeability barrier is perturbed, the transepidermal water loss returns to normal by 24-48 hours in parallel with the reappearance of stratum corneum lipids, derived from secreted lamellar bodis and accelerated lipid synthesis. Recent evidence shows that topical application of individual lipids interferes with barrier recovery while complete mixtures of cholesterol, fatty acids, and ceramides facilitate recovery after barrier disrupton. Metabolic imbalances and perturbed barrier function can be either the cause or the consequences of the pathobiology of scaling disease. Many skin diseases relating cornification and dryness are indeed related to abnormality of one or several combinations of lipids. Recently the cytokines which have changed during barrier recovery seem to be important in understanding of epidermal lipid homeostasis as well as barrier recovery.
Ceramides ; Cholesterol ; Cytokines ; Fatty Acids ; Fatty Acids, Nonesterified ; Homeostasis* ; Permeability ; Skin Diseases ; Sphingolipids ; Water

BACKGROUND: Paraquat, a widely used herbicide, is extremely toxic, causing multiple organ failure in humans. Paraquat especially leads to irreversible progressive pulmonary fibrosis, which is related to oxygen free radicals. However, its biochemical mechanism is not clear. Natural mechanisms that prevent damage from oxygen free radicals include changes in glutathione level, G6PDH, superoxide dismutase(SOD), catalase, and glutathione peroxidase. The authors think catalase is closely related to paraquat toxicity in the lungs METHOD: The effects of 3-amino-1,2,4-triazole(aminotriazole), a catalase inhibitor, on mice administered with paraquat were investigated. We studied the effects of aminotriazole on the survival of mice administered with paraquat, by comparing life spans between the group to which paraquat had been administered and the group to which a combination of paraquat and aminotriazole had been administered. We measured glutathion level, glucose 6-phosphate dehydrogenase(G6PDH), superoxide dismutase(SOD), catalase, and glutathione peroxidase(GPx) in the lung tissue of 4 groups of mice: the control grouts, group A(aminouiazole injected), group B(paraquat administered), group C(Paraquat and aminotriazole administered). RESULTS: The mortality of mice administered with paraquat which were treated with aminotriazole was significantly increased compared with those of mice not treated with aminotriazole. Glutathione level in group B was decreased by 20%, a significant decrease compared with the control group. However, this level was not changed by the administration of aminotriazole(group C). The activity of G6PDH in all groups was not significantly changed compared with the control group. The activities of SOD, catalase, and glutathione peroxidase(GPx) in the lung tissue were significantly decreased by paraquat administration(group B); catalase showed the largest decrease. Catalase and GPX were significantly decreased by aminotriazole treatment in mice administered with paraquat but change in SOD activity was not significant.(group C). CONCLUSION: Decrease in catalase activity by paraquat suggests that paraquat toxicity in the lungs is closely related to catalase activity. Paraquat toxicity in mice is enhanced by aminotriazole administration, and its result is related to the decrease of catalase activity rather than glutathione level in the lungs. Production of hydroxyl radicals, the most reactive oxygen metabolite, is accelerated due to increased hydrogen peroxide by catalase inhibition and the lung damage probably results from nonspecific tissue injury of hydroxyl radicals.
Amitrole* ; Animals ; Catalase ; Free Radicals ; Glucose ; Glutathione ; Glutathione Peroxidase ; Humans ; Hydrogen Peroxide ; Lung* ; Mice* ; Mortality ; Multiple Organ Failure ; Oxygen ; Paraquat* ; Pulmonary Fibrosis ; Superoxides

Objective : The breast-feeding rate has decreased in Korea despite of the active encouraging effort of breast-feeding for the last 10 years. So we investigated the factors that are related to breast-feeding failure. METHOD: 1807 specific questionares of mothers who visited the six university hospitals in Seoul from October 1993 to December 1995 were analysed by ANOVA and multiple logistic regression using SAS program. RESULTS: 1) Exclusive breast-feeding rate for the first 6 months was 20.0%. The factors of breast feeding success were antenatal plan for breast-feeding, the first successful breast-feeding and breast-feeding in the hospital after delivery (P<0.01). 2) The duration of breast-feeding was 5.2+/-4.4 months. It was significantly longer in the first successful breast-feeding (P<0.01). The earlier the first breast-feeding, the longer the breast-feeding duration (P<0.01). 3) The breast feeding rate for the first feeding after delivery was significantly higher in normal delivery (46.5%) and the rooming-in (57.4%) than in Cesarean section (37.1%) and the nursery (39.1%) (P<0.01). 4) The first time of breast-feeding was 64.8+/-62.8 hours after delivery and was significantly earlier in the local clinic, normal delivery and rooming-in than in the hospital, Cesarian section and the nursery (P<0.01). The first breast-feeding was successful in 46.9% and was significantly higher in antenatal education (P<0.01). 5) The reasons for the breast-feeding failure within postnatal one month were the insufficient milk (37.1%), the physician' s recommendation (18.8%), the inverted nipple (12.1%), the baby's poor suckling power (10.5%) and thin breast-milk (7.0%). The reasons to switch the successful breast-feeding to formula-feeding before 6 months of age were the return to work (25.1%), the convenience of formula-feeding (17.4%), the excellency of formula (10.0%) and maternal conveniency (6.2%). 6) The reasons to consider the breast milk insufficient were too frequent feeding with crying (38.7%) and poor sleeping with irritability (19.0%). The reasons to consider the breast milk thin were the loose stool (51.1%) and watery nature of breast milk (48.9%). The effort to increase the breask milk was present in 68.2%. The most frequent effort was to increase the maternal intake (67.6%) instead of the frequent baby' s suckling (25.6%). 7) Persons who recommended to stop breast feeding were family members 62.7%, pediatricians 25.5%, obstetricians 10.7%, nurses 1.1%. The maternal diseases to stop breast feeding by physician such as mastitis (11.1%), hepatitis B (4.9%) and tuberculosis (2.5%) were relatively appropriate. But the baby' s diseases such as jaundice (29.9%), loose stool (22.2%) and vomiting (2.8%) were inappropriate. CONCLUSIONS: To increase the breast-feeding rate, we recommend the antenatal plan for breast-feeding, the early breast-feeding as soon as possible and the exclusive breast-feeding in the hospital after delivery. The mothers should make an effort to increase the breast milk by frequent suckling. The physicians should be better prepared to assist the breast-feeding mothers and monitor continuously to resume even after the temporary hold of breast-feeding.
Breast Feeding ; Cesarean Section ; Crying ; Female ; Hepatitis B ; Hospitals, University ; Humans ; Jaundice ; Korea ; Logistic Models ; Mastitis ; Milk ; Milk, Human ; Mothers ; Nipples ; Nurseries ; Pregnancy ; Prenatal Education ; Return to Work ; Seoul ; Tuberculosis ; Vomiting

PURPOSE: To determine the reference values of hematologic and biochemical parameters of nutrition around the weaning period. METHODS: From February 1996 to March 1997, several nutritional laboratory values were evaluated in 130 healthy babies and 120 inpatients in the recovery stage of acute illness at six general hospitals. RESULTS: Reference values in 9-month-old healthy babies(range : 6-12 months) were hemoglobin 11.8+/-0.9g/dL, hematocrit 30.9+/-0.7%, serum ferritin 25.7+/-15.4ng/mL, total protein(TP) 6.5+/-0.5g/ dL, albumin 4.6+/-0.5g/dL, prealbumin 15.6+/-3.9mg/L, cholesterol 154.7+/-22.4mg/dL, calcium 10.1+/-0.5mg/dL, phosphorus 6.1+/-0.9mg/dL, alkaline phosphatase(ALP) 235.1+/-66.4U/L. Reference values in 15-month-old healthy babies(range : 13-18 months) were hemoglobin 12.3+/-1.0g/dL, hematocrit 30.9+/-0.4%, serum ferritin 20.4+/-11.2ng/mL, TP 6.8+/-0.6g/dL, albumin 4.7+/-0.5g/dL, prealbumin 18.1+/-4.6mg/L, cholesterol 163.1+/-24.2mg/dL, calcium 9.3+/-1.0mg/dL, phosphorus 6.0+/-0.8mg/dL and ALP 254.5+/-64.0U/L. Most reference values were significantly lower in inpatients than the healthy babies, except for serum ferritin level which was the opposite. There were no significant differences in reference values according to feeding and weaning practices. Incidence of anemia(hemoglobin<10.5g/dL) and iron deficiency(serum ferritin<10ng/mL) were 5%(3/60), 11.7%(7/60) in 9-month-old healthy babies and 2.9%(2/70), 18.6%(18/70) in 15-month-old healthy babies, respectively. The incidence of hypercholesterolemia(serum cholesterol>200mg/dL) was 8.6% in 15-month-old healthy babies. CONCLUSION: This study presented the reference values of hemoglobin, hematocrit, serum ferritin, total protein, albumin, prealbumin, cholesterol, calcium, phosphorus and alkaline phosphatase around the weaining period. The current nutritional status of Korean babies around the weaning period was appropriate except for borderline iron deficiency.
Alkaline Phosphatase ; Calcium ; Cholesterol ; Diet ; Ferritins ; Hematocrit ; Hospitals, General ; Humans ; Incidence ; Infant ; Inpatients ; Iron ; Nutritional Status ; Phosphorus ; Prealbumin ; Reference Values* ; Weaning*

PURPOSE: To determine the reference values of hematologic and biochemical parameters of nutrition around the weaning period. METHODS: From February 1996 to March 1997, several nutritional laboratory values were evaluated in 130 healthy babies and 120 inpatients in the recovery stage of acute illness at six general hospitals. RESULTS: Reference values in 9-month-old healthy babies(range : 6-12 months) were hemoglobin 11.8+/-0.9g/dL, hematocrit 30.9+/-0.7%, serum ferritin 25.7+/-15.4ng/mL, total protein(TP) 6.5+/-0.5g/ dL, albumin 4.6+/-0.5g/dL, prealbumin 15.6+/-3.9mg/L, cholesterol 154.7+/-22.4mg/dL, calcium 10.1+/-0.5mg/dL, phosphorus 6.1+/-0.9mg/dL, alkaline phosphatase(ALP) 235.1+/-66.4U/L. Reference values in 15-month-old healthy babies(range : 13-18 months) were hemoglobin 12.3+/-1.0g/dL, hematocrit 30.9+/-0.4%, serum ferritin 20.4+/-11.2ng/mL, TP 6.8+/-0.6g/dL, albumin 4.7+/-0.5g/dL, prealbumin 18.1+/-4.6mg/L, cholesterol 163.1+/-24.2mg/dL, calcium 9.3+/-1.0mg/dL, phosphorus 6.0+/-0.8mg/dL and ALP 254.5+/-64.0U/L. Most reference values were significantly lower in inpatients than the healthy babies, except for serum ferritin level which was the opposite. There were no significant differences in reference values according to feeding and weaning practices. Incidence of anemia(hemoglobin<10.5g/dL) and iron deficiency(serum ferritin<10ng/mL) were 5%(3/60), 11.7%(7/60) in 9-month-old healthy babies and 2.9%(2/70), 18.6%(18/70) in 15-month-old healthy babies, respectively. The incidence of hypercholesterolemia(serum cholesterol>200mg/dL) was 8.6% in 15-month-old healthy babies. CONCLUSION: This study presented the reference values of hemoglobin, hematocrit, serum ferritin, total protein, albumin, prealbumin, cholesterol, calcium, phosphorus and alkaline phosphatase around the weaining period. The current nutritional status of Korean babies around the weaning period was appropriate except for borderline iron deficiency.
Alkaline Phosphatase ; Calcium ; Cholesterol ; Diet ; Ferritins ; Hematocrit ; Hospitals, General ; Humans ; Incidence ; Infant ; Inpatients ; Iron ; Nutritional Status ; Phosphorus ; Prealbumin ; Reference Values* ; Weaning*

A case of multiple trichilemmal cysts (TC) is presented. TC is known to be a kind of keratinous cyst with lining cells showing trichilemmal keratiniration. A 63-year-old female patient presented with a 30 year duration of increasing in size and number of twenty five nodular lesions on the scalp. All twenty five TC on the scalp were totally excised and examined microscopically. However, the evidence of proliferation or malignant change like the previous case reports was not found in our case.
Female ; Humans ; Middle Aged ; Scalp