1.Accuracy of CT: Evaluation of Bronchial Invasion of Lung Cancer.
Jae Boem NA ; Kyu Ok CHOE ; Kyung Young CHUNG ; Se Kyu KIM ; Jun CHANG ; Sung Kyu KIM
Tuberculosis and Respiratory Diseases 1997;44(3):505-515
BACKGROUND: We assessed the accuracy of staging in evaluation of bronchial invasion thus found the role of CT in patients who underwent resective surgery in primary lung cancer. Materials and METHODS: Authors retrospectively analized the preoperative CT scans of 156 patients receiving pneumonectomy(n=95) and lobectomy(n=61). Among lobectomy patients 7 patients subsequently performed pneumonectomy because of positive resection margin of bronchus in frozen biopsy. We also retrospect lively analized CT scans of non-operated 60 patients who Performed sufficient bronchoscopic biopsy. Bronchial wall thickness more than 3mm, irregular wall thickening find reduction of diameter by CT were defined as bronchial invasion. The pathologic examination of resection margin were positive in 20, stump recurrence occurred in 6 of the operated group, and the pathologic examination of biopsy of bronchial wall were positive in 34 of the non operated group, and these were all regarded as bronchial invasion. RESULTS: The CT assessment of bronchial invasion revealed low sensitivity (11.5%), low positive predictability(38%), but high specificity(96%) and relatively high accuracy (84%) in the operated group and higher sensitivity (62%), higher positive predictability(95%) in non-operated group. CONCLUSION: In lung cancer patients who underwent operation CT showed very low sensitivity and positive predictability In evaluation of bronchial invasion Because the usefulness of CT in evaluation of bronchial invasion is limited, therefore aggressive fiberoptic bronchoscopic biopsy is thought to be necessary before surgical attempt.
Biopsy
;
Bronchi
;
Humans
;
Lung Neoplasms*
;
Lung*
;
Pneumonectomy
;
Recurrence
;
Retrospective Studies
;
Tomography, X-Ray Computed
2.A Decreased Growth Rate of the Great Toe Nail Observed in Patients with Distal Subungual Onychomycosis.
Gun Yoen NA ; Moo Kyu SUH ; Yeol Oh SUNG ; Sung Kwan CHOI
Annals of Dermatology 1995;7(3):217-221
BACKGROUND: There are prerequisites for fungal nail infection: fungal organism, susceptible host, and environments with damaged nail. OBJECTIVE: The purpose of this study was to evaluate the growth rate of the great toe nail in distal subungual onychomycosis(DSO). MATERIALS AND METHODS:: The subjects are 60 adult patients with DSO and 19 age- and sex-matched controls with tinea pedis but no DSO. The growth rate of the great toe nail was measured. Data were evaluated with Mann-Whitney U-test and regression analysis using the statistical program for PC. RESULTS: The growth rate of the patients group showed a decrease against that of the controls. The equation for expected nail growth rate of specific age and sex was as follows: the expected nail growth rate(mm/day) = 0.07382 + (0.01498 × G) - (0.00033 × Age) - (0.00669 × S): if a person has DSO, G is 1, and if he has no DSO, G is 2; if a person is male, S is 1, and, female, 2. CONCLUSION: Patients with DSO often have a decreased growth rate of the nail compared with that of the controls. The authors propose the equation of expected nail growth rate in persons with or without DSO, and think that the growth rate of the nail is one of factors in the pathogenesis of onychomycosis.
Adult
;
Female
;
Humans
;
Male
;
Onychomycosis*
;
Tinea Pedis
;
Toes*
3.Role of Leukemia Inhibitory Factor in the Effect of Co-Culture on Preimplantation Embryo Develpement.
Kyu Sup LEE ; Sang Woo KIM ; Yong Jin NA ; Young Ah LEE ; Ha Jung KIM ; Sung Kyu JANG
Korean Journal of Obstetrics and Gynecology 2000;43(7):1216-1222
OBJECTIVE: To assess the effect of recombinant human leukemia inhibitory factor on in vitro development of 1-cell ICR mouse embryo. MATERIALS AND METHOD: ICR mice were superovulated with PMSG/hCG and 1-cell stage mouse embryos were recruited. 1-cell mouse embryo were cocultured on human oviductal cells in a CO2 incubator (coculture group) and were cultured on 0.4% BSA+HTF media (control group). And anti-hLIF Ab was added the cocultured group in a different concentration (1pg, 10pg, 100pg, 1ng) and developmental rate was compaired to the control group, and rhLIF was added to the preincubated 0.4% BSA+HTF media in a different concentration (2000U, 1000U, 100U, 10U) and its developmental rate was compaired to group which was cultured on 0.4% BSA+HTF media only. RESULT: 1. The cleavage rate of 2-cell mouse embryo co-cultured with human tubal epithelial cell was significantly higher than that of cultured with media alone (HTF with 0.4% BSA) (p<0.05). 2. When LIF antibody was added to the medium with human tubal epitherlial cell, the mouse embryo could not cleave more than 2-cell in 1 ng of LIF antibody, and less than 1 ng, the cleavage rate was lower than cultured without LIF antibody group(p<0.05). 3. Two cell blocked ICR mouse embryos were developed into four cells under LIF(p<0.05), but no further development was observed. CONCLUSIONS: These results shows that LIF enhances the development of preimplantation embryo, and when rhLIF is applicated in vitro, it has positive effects on the development of early mouse embryo and can help overcoming the two-cell block.
Animals
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Blastocyst*
;
Coculture Techniques*
;
Embryonic Structures
;
Epithelial Cells
;
Humans
;
Incubators
;
Leukemia Inhibitory Factor*
;
Leukemia*
;
Mice
;
Mice, Inbred ICR
;
Oviducts
4.Urinary Incontinence in the Patients with Dementia.
Kyu Sung LEE ; Wook OH ; Jong Min YUN ; Dae Kyung KIM ; Duk Lyul NA
Korean Journal of Urology 2000;41(8):1004-1011
No abstract available.
Dementia*
;
Humans
;
Urinary Incontinence*
5.Identification and cDNA Cloning of the Leptin Receptor Long from ( OB-Rb ) from Rat Splenocytes.
Jung Hyun PARK ; Sung Kyu JU ; Shin Young NA ; Kwan Hee YOU ; Kil Lyong KIM
Korean Journal of Immunology 2000;22(1):31-38
No abstract available.
Animals
;
Clone Cells*
;
Cloning, Organism*
;
DNA, Complementary*
;
Leptin*
;
Rats*
;
Receptors, Leptin*
6.An Anion Site Change of the Glomerular Basement Membrane on Various Glomerular Diseases.
Yu Na KANG ; Kwan Kyu PARK ; Seung Pil KIM ; Sung Bae PARK ; Hyun Chul KIM ; Eun Sook CHANG ; In Soo SUH
Korean Journal of Pathology 1997;31(8):765-772
We studied the ultrastructural alteration of glomerular anionic sites in 6 patients with minimal change nephrotic syndrome, 5 patients with membranous glomerulonephritis, 4 patients with focal segmental glomerulosclerosis, and 4 patients with IgA nephropathy by staining with polyethyleneimine (PEI) as a cationic probe. The control study was examined by using a nephrectomy specimen of non-glomerular disease which had no proteinuria. This method seems to selectively stain heparan sulphate in the basement membranes and has been widely used to evaluate changes in basement membrane charge in various human diseases as well as in experimental studies. The anionic sites in the lamina rara interna and lamina densa of normal glomerular basement membrane were always less numerous and less regularly distributed than those in the lamina rara externa. Characteristic common findings in these glomeruli showed a marked decrease of glomerular anionic sites in the regions with immune-complex deposits and normal distribution in the regions with focally those being absorbed and newly forming glomerular basement membrane. They were not detected in the gap of the basement membrane and on the area of the detached overlying epithelium using the PEI method. But the foot process fusion of epithelial cells seems not to influence the loss of anionic sites on the glomerular basement membrane.
Basement Membrane
;
Epithelial Cells
;
Epithelium
;
Foot
;
Glomerular Basement Membrane*
;
Glomerulonephritis, IGA
;
Glomerulonephritis, Membranous
;
Glomerulosclerosis, Focal Segmental
;
Humans
;
Nephrectomy
;
Nephrosis, Lipoid
;
Polyethyleneimine
;
Proteinuria
7.Repositioning of a Free Cap after Laser-assisted in situ Keratomileusis
Miri NA ; Sung Kun CHUNG ; Kyu Hong PAK ; Jin Seok CHOI
Journal of the Korean Ophthalmological Society 2018;59(5):484-490
PURPOSE: To report a case of irregular astigmatism caused by a free flap during laser-assisted in situ keratomileusis (LASIK) surgery that was treated with a flap rotation based on postoperative topography. CASE SUMMARY: A 21-year-old female underwent LASIK, which was complicated by a free cap on her right eye. Because the gentian violet markings were no longer present, the exact orientation of the cap was unknown. At 3 months after surgery, the astigmatism of the right eye was −3.00 diopters (D) with an uncorrected visual acuity (UCVA) of 0.4, and the astigmatism of the left eye was −0.75 D with an UCVA of 1.0. The corneal topography was analyzed in order to return to the existing position. Free cap repositioning was performed and irregular astigmatism was corrected to improve the UCVA to 1.0. CONCLUSIONS: If the preoperative markings cannot be identified on a free flap during LASIK, secondary postoperative corneal topographic analysis can be performed to restore the corneal free flap to its original position to minimize astigmatism with good visual outcomes.
Astigmatism
;
Corneal Topography
;
Female
;
Free Tissue Flaps
;
Gentian Violet
;
Humans
;
Keratomileusis, Laser In Situ
;
Visual Acuity
;
Young Adult
8.Gut microbiome on immune checkpoint inhibitor therapy and consequent immune-related colitis: a review
Sung Wook HWANG ; Min Kyu KIM ; Mi-Na KWEON
Intestinal Research 2023;21(4):433-442
Immune checkpoint inhibitors have dramatically revolutionized the therapeutic landscape for patients with advanced malignancies. Recently, convincing evidence has shown meaningful influence of gut microbiome on human immune system. With the complex link between gut microbiome, host immunity and cancer, the variations in the gut microbiota may influence the efficacy of immune checkpoint inhibitors. Indeed, some bacterial species have been reported to be predictive for cancer outcome in patients treated with immune checkpoint inhibitors. Although immune checkpoint inhibitors are currently proven to be an effective anti-tumor treatment, they can induce a distinct form of toxicity, termed immune-related adverse events. Immune-related colitis is one of the common toxicities from immune checkpoint inhibitors, and it might preclude the cancer therapy in severe or refractory cases. The manipulation of gut microbiome by fecal microbiota transplantation or probiotics administration has been suggested as one of the methods to enhance anti-tumor effects and decrease the risk of immune-related colitis. Here we review the role of gut microbiome on immune checkpoint inhibitor therapy and consequent immune-related colitis to provide a new insight for better anti-cancer therapy.
10.Ovarian Remnant Syndrome at the Trochar Site: A Report of a Rare Complication Following Laparoscopic Ovarian Surgery.
Ki Yong NA ; Ji Youn SUNG ; Kyu Yeoun WON ; Gou Young KIM ; Sung Jig LIM ; Suk Hwan LEE
Korean Journal of Pathology 2013;47(3):304-306
No abstract available.