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곽택종 ( Taek-jong Kwak ),장민열 ( Min-youl Chang ),이상민 ( Sang-min Lee ),박선규 ( Sun-kyoo Park ),박수남 ( Soo Nam Park ) 대한화장품학회 2010 대한화장품학회지 Vol.36 No.3
사람의 피부색에 결정적인 영향을 미치는 멜라닌은 표피 기저층의 멜라닌형성세포(Melanocyte)에 의해 생성되어 피부 전반에 분포하고 있으며, 표피의 가장 외각인 각질층에서도 멜라닌은 존재하고 있다. 이러한 각질세포 내 멜라닌과 피부색과의 관계를 알아보고자 각질세포 내 멜라닌의 선택적 염색(Fontana-Masson method) 및 영상분석을 통한 정량적 평가법을 확립하였고, 각질세포 내 멜라닌 양과 색차계를 통한 피부색과의 상관관계를 조사하였다. 71명의 여성 피시험자를 대상으로 색차계를 이용한 피부색과 동일부위의 각질세포에 함유된 멜라닌을 정량하여 비교하였을 때, 각질세포 내 멜라닌이 차지하는 면적을 나타내는 MCA (Melanin covering area)값이 피부색의 L*값, ITAo (Individual Typology Angle)값과 비교적 높은 상관관계를 보였다(각각 r = 0.6049, r = 6651). 이러한 결과를 통해 각질세포 내 멜라닌 양이 피부색 분류의 새로운 기준이 될 수 있는 가능성을 확인했으며, MCA값에 따라 새로이 피부색을 분류하는 기준을 제시할 수 있었다. 본 실험을 통해, 각질세포 내 멜라닌 정량법의 개발과 멜라닌 양에 따른 새로운 피부색 분류기준을 세울 수 있었으며 개발된 각질세포 내 멜라닌 정량법은 향후 새로운 in vivo 미백 평가 및 피부 색상과 관련된 여러 분야에서 매우 유용하게 이용될 수 있을 것이다. Melanin is synthesized by the melanocytes in basal layer of epidermis and distributed over all the layers of skin including corneocytes in stratum corneum, outermost layer of the epidermis. Melanin of corneocytes was stained using Fontana-Masson method and quantified by image analysis. The correlation between melanin contents and skin color value was estimated in the skin of 71 Korean women. Melanin covering area (MCA) showed good correlation with L* value and ITAo (Individual Typology Angle) (r = 0.6049, 0.6651, respectively). MCA can be used as new parameter for skin color study and has potential application for evaluating the efficacy of the skin whitening cosmetics.
외래환자 마취시 Propofol-fentanyl 과 Propofol-N2O 의 비교
김경중,김진윤,라은길,박선규 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.3
Background : The choice of anesthetic agents and adjuvants during outpatient surgery is of critical importance. Propofol is widely used for the induction and maintenance of outpatient anesthesia. Because propofol lacks analgesic properties, very high concentrations may be required when propofol is used as the sole anesthetic drug. Propofol is used with adjuvants such as nitrous oxide or opioid. This study was designed to evaluate the intraoperative hemodynamic response, recovery characteristics and side effects of propofol-fentanyl anesthesia compared with propofol-N2O anesthesia for outpatient surgery. Methods : Twenty six healthy and unpremedicated patients scheduled for outpatient surgery were randomly allocated to receive either propofol-N2O anesthesia(N-group) or propofol-fentanyl anesthsia (F-group). The patients in N-group were ventilated with nitrous oxide 60∼70% in oxygen and the patients in F-group were ventilated with oxygen 40% in nitrogen via laryngeal mask airway(LMA). Results : There was no sinificant difference in blood pressure during anesthesia, recovery time and side effects between two group. There was significant decrease of heart rate in F-group. Conclusion : We concluded that nitrous oxide and fentanyl are reasonable adjuvants of propofol anesthesia in outpatient anesthesia. (Korean J Anesthesiol 1997; 33: 441∼446)
한국산 잡견에 유발된 급성 폐부종에서 고빈도제트환기와 기계적환기의 혼합작용이 심혈관계 및 동맥혈가스에 미치는 영향
김진윤,이종무,구길회,박선규,정지섭 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.6
Background : High-frequency jet ventilaion is considered a reliable technique for anesthesia and critical care including respiratory failure but there are adverse reactions such as carbon dioxide retension and dry of respiratory mucosa. The purpose of this study was to confirm the effects of combined high- frequency jet ventilation(HFJV) and converntional mechanical ventilation (CMV) on the cardiovascular system, arterial blood gases tension and mean airway pressure in 9 Korea mongrel dogs with pulmonary edema induced by oleic acid. Methods : During CMV with 20 breaths/minute, 10 ml/kg of tidal volume and F1O2 1.0, parameers were evaluated(base line value). When pulmonary edema was developed, HFJV was applied initially with 120 breaths/minute, inspiratory time 30% and driving pressure 40 psi F1O2 1.0 for 60 minutes(control value) and thereafter simultaneous use of CMV was applied with the tidal volume of 10 ml/kg and each respiratory rate 8, 4, 2, 1, 0.5 per minute for 30 minutes. Results : Combined application of HFJV and CMV(above repiratory rate 1 per minute) achieved the improvement of oxygenation and carbon dioxide elimination, and Paw was decreased without undesirable effects on cardiovascular system in case of the induced pulmonary edema. Concusions: From above results we recommanded that HFJV combined with CMV may be a useful method of treatment for respiratory failure. (Korean J Anesthesiol 1997; 33: 1012∼1019)