1.The anti-tubercular activity of Melia azedarach L. and Lobelia chinensis Lour. and their potential as effective anti-Mycobacterium tuberculosis candidate agents
Asian Pacific Journal of Tropical Biomedicine 2016;6(10):830-835
Objective: To evaluate the anti-mycobacterial activity of Melia azedarach L. (M. azedarach) and Lobelia chinensis Lour. (L. chinensis) extracts against the growth of Mycobacterium tuberculosis (M. tuberculosis).
Methods: The anti-M. tuberculosis activity of M. azedarach and L. chinensis extracts were evaluated using different indicator methods such as resazurin microtiter assay (REMA) and mycobacteria growth indicator tube (MGIT) 960 system assay. The M. tuberculosis was incubated with various concentrations (50–800 mg/mL) of the ex-tracts for 5 days in the REMA, and for 4 weeks in MGIT 960 system assay.
Results: M. azedarach and L. chinensis extracts showed their anti-M. tuberculosis ac-tivity by strongly inhibiting the growth of M. tuberculosis in a concentration-dependent manner in the REMA and the MGIT 960 system assay. Particularly, the methanol extract of M. azedarach and n-hexane extract of L. chinensis consistently exhibited their effects by effectively inhibiting the growth of M. tuberculosis in MGIT 960 system for 4 weeks with a single-treatment, indicating higher anti-M. tuberculosis activity than other extracts, and their minimum inhibitory concentrations were measured as 400 mg/mL and 800 mg/mL, respectively.
Conclusions: These results demonstrate that M. azedarach and L. chinensis extracts not only have unique anti-M. tuberculosis activity, but also induce the selective anti-M. tuberculosis effects by consistently inhibiting or blocking the growth of M. tuberculosis through a new pharmacological action. Therefore, this study suggests the potential of them as effective candidate agents of next-generation for developing a new anti-tuberculosis drug, as well as the advantage for utilizing traditional medicinal plants as one of effective strategies against tuberculosis.
2.Characteristics of alcoholic subtypes classified by age of onset.
Gyui Won BANG ; Hyung Yung LEE
Journal of Korean Neuropsychiatric Association 1993;32(2):222-230
No abstract available.
Age of Onset*
;
Alcoholics*
;
Humans
3.Clinical study on surgical treatment of acquired tricuspid regurgitation.
The Korean Journal of Thoracic and Cardiovascular Surgery 1993;26(3):196-203
No abstract available.
Tricuspid Valve Insufficiency*
4.A Case of Connective Tissue Nevi: Elastocollagenoma compared with Elastofibroma.
Seung Min LEE ; Won Hyung KANG ; Seung Hun LEE
Annals of Dermatology 1994;6(2):230-235
No abstract available.
Connective Tissue*
;
Nevus*
5.The species and antimicrobial susceptibility of microorganisms isolated from blood cultures of patients.
Young UH ; Hyung Hoan LEE ; Kyung Won LEE ; yunsop CHONG
Journal of the Korean Society for Microbiology 1991;26(5):417-430
No abstract available.
Humans
6.Transrectal ultrasonography and CT scan in preoperative staging of rectal carcinoma.
Hye Won KOH ; Kee Hyung LEE ; Choong YOON
Journal of the Korean Society of Coloproctology 1992;8(3):219-226
No abstract available.
Tomography, X-Ray Computed*
;
Ultrasonography*
7.A mathematical approach to the mode of transmission of clonorchiasis in the inhabitants of Nak-dong and Han River basin.
Ki Won SONG ; Shin Yong KANG ; Soon Hyung LEE
The Korean Journal of Parasitology 1979;17(2):114-120
To understand the mode of transmission in clonorchiasis, a survey was made in Kim-hae Goon, South Kyong-sang Do (=Province). The mathematical analysis of the age prevalence was done on the egg positive rates. And another analysis for the comparison was also made to the cited data from two areas, North Kyong-sang Do and Ko-yang Goon, Kyong-gi Do. Some catalytic models of H. Muench (1959) were applied to the observed age prevalence. Because the both parameters, such as force of infection(a) and loss of positivity(b) were considered to be constant for a long period in the surveyed area, the two stage catalytic model by Muench was chosen to the analysis. In the surveyed area, Kim-hae Goon where the egg positive rates were 56.2 percent and 61.2 percent (by Kim, 1974), the constant values of 'a' were found to be 0.051 and 0.089 respectively. In other words, the force of infection was 51, 89 per 1,000 susceptibles. The values of 'b' were found to be 0.006 and 0.005. This means that the rates of disappearance from egg positive cases to negative were 6 and 5 per annum per l,000 positive cases in above area. Therefore, the two catalytic curves were expressed by the following equations, y = 1.133 {e(-0.006t) - e(-0.051t)} and y = 1.047 {e(-0.005t) - e(-0.089t)} respectively. In the cases of North Kyong-sang Do and Ko-yang Goon, Kyong-gi Do where the egg positive rates of clonorchis shown as 27.7 percent and 15.2 percent by Shin (1964) and Kim (l974), the curves were expressed by y = 1.769 {e(-0.010t) - e(-0.034t)} and y = 2.857 {e(-0.020t) - e(-0.027t)} respectively. From the above mathematical analyses by age prevalence in clonorchiasis, it was considered that the mode of transmission of clonorchiasis in the surveyed area, Kim-hae Goon presented more rapid pattern than those of North Kyong-sang Do and Ko-yang Goon, Kyong-gi Do.
parasitology-helminth-trematoda
;
clonorchiasis-Clnorchis sinensis
;
epidemiology
;
transmission
8.Excretion of Trace Element into Thermal Sweat.
Won Hyung KANG ; Sung Nack LEE ; Yong CHUNG
Korean Journal of Dermatology 1988;26(1):17-21
Using atomic absorption spectrometry Pb, Cd, Cu, Zn and Fe were measured in sweat and Pb, Cd, Cu and Zn, in blood. The subjects were 22 healthy males, aged between 23-44. Sweating was induced with an environmental room (1 hour at 46C dry bulb and 36C wet bulb). Sweat samples were obtained from the left arm by the armbag technique. The sweat volume was 23.3+7.3ml(n= 22). The concentrations, in ug/ml, of trace elements in sweat were : lead, 0.18+0.17(n=22); cadmium, 0.006+0.006(n=22); copper, 0.37+0.66(n=10); zinc, 0.63+0.5(n=10); and iron, 0.22+0.12(n=10). The concentrations, in ug/ml, of trace elements in blood were : lead, 0.28+0.15(n=20); cadmium, 0.005+0.007 (n=20); copper,0.69+0.22(n=20); and zinc,5.61+0.86(n=20). These results clearly showed the significance of sweating as a route of excretion of trace element.
Absorption
;
Arm
;
Cadmium
;
Copper
;
Humans
;
Iron
;
Male
;
Spectrum Analysis
;
Sweat*
;
Sweating
;
Trace Elements
;
Zinc
9.A case of tongue volume measurement with the plaster tongue model for partial glossectomy in macroglossia.
Se Kwang OH ; Won Yong YANG ; Doo Hyung LEE
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1998;25(4):593-597
The tongue is located inside the oral cavity at rest, and the structural interrelations between the tongue and the oral cavity is essentially important for normal tongue function. Macroglossia is clinically diagnosed whenever the tongue does not fit the oral cavity, thus patients complain of noisy breathing, drooling, speech and swallowing dysfunction, malocclusion, and social ridicule. Partial glossectomy for macroglossia volume has been assumed to be difficult. In this study, we attempted to measure the tongue volume with the plaster tongue model in a 7-year-old macroglossia patient. This method is reliable and simple for measuring the tongue volume in macroglossia.
Child
;
Deglutition
;
Glossectomy*
;
Humans
;
Macroglossia*
;
Malocclusion
;
Mouth
;
Respiration
;
Sialorrhea
;
Tongue*
10.Conservative management of esophageal perforation: Clinical analysis of 14 cases.
Byung Woo BAE ; Hyung Ryul LEE ; Jong Won KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 1993;26(8):633-637
No abstract available.
Esophageal Perforation*