Sleep is associated with definite changes in respiratory function in normal human beings. During sleep, there is loss of voluntary control of breathing and a decrease in the usual ventilatory response to both low oxygen and high carbon dioxide levels. Especially, rapid eye movement (REM) sleep is a distinct neurophysiological state associated with significant changes in breathing pattern and ventilatory control as compared with both wakefulness and non-rapid eye movement (NREM) sleep. REM sleep is characterized by erratic, shallow breathing with irregularities both in amplitude and frequency owing to marked reduction in intercostal and upper airway muscle activity. These blunted ventilatory responses during sleep are clinically important. They permit the marked hypoxemia that occurs during REM sleep in patients with lung or chest wall disease. In addition, sleep-disordered breathing (SDB) is more frequent and longer and hypoventilation is more pronounced during REM sleep. Although apneic episodes are most frequent and severe during REM sleep, most adults spend less than 20% to 25% of total sleep time in REM. It is therefore possible for patients to have frequent apneas and hypopneas during REM sleep and still have a normal apnea-hypopnea index if the event-rich REM periods are diluted by event-poor periods of NREM sleep. In this review, we address respiratory physiology according to sleep stage, and the clinical implications of SDB and hypoventilation aggravated during REM sleep.
Adult ; Anoxia ; Apnea ; Carbon Dioxide ; Eye Movements ; Humans ; Hypoventilation ; Lung ; Oxygen ; Respiration ; Respiratory Physiological Phenomena ; Sleep Apnea Syndromes* ; Sleep Stages ; Sleep, REM ; Thoracic Wall ; Wakefulness

Fifty-one cases of various warts were treated with 1-cbloro-2,4-dmitrobenzene (DNCB), and divided these warts into two groups by the method of treatment. The first group was treated by challenge on normal skin a,fter sensitization and the second group was treated by challenge on wart lesion after sensitization. The number of first group was 27 consisted of 13 of verruca vulgaris, 12 of verruca plana and 2 of condyloma acuminatum. The number of second group was 24 consisted of 10 of verruca vulgaris, 11 of verruca plana and R of verruca plantaris. The results are summarized as follows; 1. Thirty-one of all 51 cases (60. 7%) were cured. 2. Fifteen of 27 cases (55.5%) were cured in first group. 3. Sixteen of 24 cases (66. 6%) were cured in second group. 4. All 3 cases of verruca planaris were cured in second group. 5. Eight cases were cured only by sensitization and consisted of 6 of verruca plana and of verruca vulgaris. 6. There was no significant difference in cure rates of warts between the group within 2 years of duration and the group over 2 years of duration. 7. There were no severe adverse reactions.
Dinitrochlorobenzene* ; Immunotherapy* ; Skin ; Warts*

A typical case of lichen amyloidosis is reported. This case is considered to be the first one in Korea. Intralesional injection of prednisolone proved to be effective in this case. The etiologic and therapeutic aspects of this disease are discussed.
Amyloidosis* ; Injections, Intralesional ; Korea ; Lichens* ; Prednisolone

No abstract available.
Mast Cells* ; Skin Diseases*

The routine closed patch tests were performe0 with 41 kinds of domestic soaps, detergents, cosm etics and topical medicaments (incIuding a adhesive plaster) on the intact skin of the back of 100 adult males without any dermatoses, to evaluate their side effects on the skin. 1, None of the materials showed no positive reaction, 2, The over all positive reactions were observed in 21.l% of my subjects, including a 1+reacti ons in,l6,4% and a 2+or 3, In 4.7% 3, In 12 kinds of soaps, Positive reaction wer observed in 19-33% positive of my subjects (average Z7.8%) 4, In 4 kinds of detergents, positive reations were observed in 6-19% of my subjects (average 9,7%), in which the highest reaction rate revealed was IVonderful of Dongsan fats and oils co.. 5. The positive reactiors in 3 kinds of toothpastes were observed in 37-61% of my subjects (average 50.7%). 6. The positive reactions to the adhesive plaster were observed in 25% of my subjects. Arnong 17 kinds of topial medicaments, positive reaction rates above 10 shown were Aroos oirtment of Sarn-A phaxmaceutical co. (49%), PM spirit of Kyungnam pharmaceutical co. (16%), Periio ointment of Namgang pharmaceutical co. (13%), Badional-Gel of Hanil pharm-aceutcal co. (10%) and Antiphlamine of Yuhan corporation (10%). 8. In 4 kinds of cosmetic creams, all showed higher positive reaction rates, i.e, "Masan Joongang cream of Yeinvonlang No I, 41%;No.2, 35%;N0.3, 32% and E.mong cream" of Daido phanna-ceutical co,44%.
Adhesives ; Adult ; Detergents ; Fats ; Gyeongsangnam-do ; Humans ; Male ; Oils ; Patch Tests ; Skin ; Skin Diseases ; Soaps* ; Toothpastes

Previously we reported the result of topical immunotherapy of warts with I -chloro-2,4-dinitrobenzene(DNCB) solution using two different methods. In this study, we treated the warts with DNCB ointment and compared the therapeutic result with previous study. In addition, in order to evaluate the possible rnechanlarn of DNCB-induced wart regression by histologic rnethod, 5 regressing warts were biopsied and we observed the histopathologic findings. Thirty-six patients with various warts which were resistant to the conventional measures were treated by challeng application with 100mg% or 10mg% DNCB ointment directly on several randomly selected wart lesions after sensitization. with l?000mcg of DNCR in solution on normal skin of upper arm. In 5 pat:ients showing regression of warts, one wart lesion which was not challenged with DNCR was biopsied. The results are summarized as follows; 1. We treated the 36 patients having various warts with DNCB ointment and 25 patients (69.4%) were cured. Most(72%) of the eured warts began to regress within one month. 2. We cornpared the therapeutic result in this study with the results in theprevious study in which we used DNCB solution with two different methods, Comparing the results obtained by the R different methods, we found no statistically different cure rate, however the present method might be more convement because the ointment can be maintained longer without any change of the ingredient concentration and can be applied more easily than the solution. 3. On histologic examination, we observed moderate to severe patchy perivasce
Arm ; Dinitrochlorobenzene* ; Humans ; Immunotherapy* ; Skin ; Warts*

Lesional and normal skins in 10 patients of fixed drug eruption were studied. Number and vertical distance of rete ridges were measured in H & E stained specimens. Amount of free melanin and number of melanocytes were counted in dopa stained epidermal sheets. According to the number of recurrence, activity and number of melanocytes see med to be changed. The lesions of a few recurrence showed only active melano cytes, however, those of frequent recurrenoe increased number of melanocytes with marked elongation of rete ridges. It is supposed that the numerical increase of melanocytes were from the elongation of rete redges.
Dihydroxyphenylalanine ; Drug Eruptions* ; Humans ; Melanins ; Melanocytes* ; Recurrence ; Skin

Suction is a useful tool for separation of epidermis from dermis in vivo. With appropriate suction pressures and durations applied, cellular damage of the separated epidermis can reduce, This study was performed to examine the appropriste suction pressures and durations in the lhsional and normal skin of four vitiligo patients who wanted to take epidermal autograft. The suction pressures and durations for making the blisters of similar morphology were different according to person. Microscopic changes in the blisters of similar morphology were not very different, and suction of 200 to 250 mmHg for 2 to 3 hours with a 2cm diametered suction cup was considered to be acceptable. Obvious damage to keratinocytes and diminish of melanacyte number were observed with much more powerful and longer suction such as suction of 350 to 400 mmHg for 3 to 4 hours. The level of dermo-epidermal separation was between basal cell membrane.
Autografts ; Blister ; Cell Membrane ; Dermis* ; Epidermis* ; Humans ; Keratinocytes ; Skin ; Suction* ; Vitiligo*

No abstract available.
Diaphragm*

Five cases of erythema dyschromicum perstans which seem to be the first cases in Korea are described. They are healthy subjects with moderately pigmented skin. Numerous gray-blue macules are seen on the covered part of the body in two patients, but dark brownish macules in other three patients. Histologic findings reveal the characteristic features of hydropic degeneration of the basal cell layer of the epidermis, perivascular infiltrates of lymphocytes and histiocytes and melanin-laden macrophages in the corium in four patients, however, merely pigmentary incontinence into the corium in one patient. We think that there are some problems in cases which show the chracteristic features of erythema dyschromicum perstans histologically but do not have peculiar clinical features, e.g. color of the lesion, especially in Oriental. In this respect, though there may be down for much discussion in three cases which have not typical color of the lesion, we report these cases with typical two cases under the name of erythema dyschromium perstans in order to accumulate more knowledge of these problems
Dermis ; Epidermis ; Erythema* ; Histiocytes ; Humans ; Korea ; Lymphocytes ; Macrophages ; Skin