1.Intestinal histopathology and in situ postures of Gymnophalloides seoi in experimentally infected mice.
Jong Yil CHAI ; Hong Soon LEE ; Sung Jong HONG ; Jae Hyung YOO ; Sang Mee GUK ; Min SEO ; Min Ho CHOI ; Soon Hyung LEE
The Korean Journal of Parasitology 2001;39(1):31-41
The intestinal histopathology and in situ postures of Gymnophalloides seoi (Digenea: Gymnophallidae) were studied using C3H/HeN and C57BL/6 mice as experimental hosts; the effects of immunosuppression were also observed. The metacercariae isolated from naturally infected oysters, 300 or 1,000 in number, were infected orally to each mouse, and the mice were killed at days 3-21 post-infection (PI). In immunocompetent (IC) mice, only a small number of flukes were found in the mucosa of the duodenum and jejunum during days 3-7 PI, with their large oral suckers pinching and sucking the root of villi. The intestinal mucosa showed mild villous atrophy, crypt hyperplasia, and inflammations in the villous stroma and crypt, with remarkable goblet cell hyperplasia. These mucosal changes were almost restored after days 14-21 PI. In immunosuppressed (IS) mice, displacement as well as complete loss of villi adjacent to the flukes was frequently encountered, otherwise the histopathology was generally mild, with minimal goblet cell hyperplasia. In these mice, numerous flukes were found, and it seemed that they were actively moving and rotating in situ. Several flukes were found to have invaded into the submucosa, almost facing the serosa. These results indicate that in IC mice the intestinal histopathology caused by G. seoi is generally mild, and the flukes do not penetrate beyond the mucosa, however, in IS mice, the flukes can cause severe destruction of neighboring villi, and some of them invade into the submucosa.
Animals
;
Atrophy
;
Immunocompromised Host
;
Intestinal Diseases, Parasitic/*parasitology/pathology
;
Intestinal Mucosa/parasitology/*pathology
;
Male
;
Mice
;
Mice, Inbred C3H
;
Mice, Inbred C57BL
;
Support, Non-U.S. Gov't
;
Trematoda/*pathogenicity
;
Trematode Infections/*parasitology/pathology
2.Survey of Causes of Blindness on Hospital Patients in Korea: Preliminary Report.
Bon Sool KOO ; Sang Min KIM ; Byung Sik CHAI ; Jin Hyung YOO
Journal of the Korean Ophthalmological Society 1973;14(2):86-100
Survey of causes of blindness on 45,400 eye patients of various hospitals(total 16 in number) in 1970 is attempted. Blindness is defined as visual acuity for distance of 0.1 (20/200) or less in the better eye with best correction. Representation of diagnosis of ocular affection is based on exmination of ophthalmologists and the Standard Classification of Causes of Blindness recommended from the International Association for the Prevention of Blindness (revised) is applied. Estimated number of blindness is 1,162(2.6%). Distribution of blindness cases by age group, is: in male - under 5(2.7%), 6~19(8.2%), 20~44(17.3%), 45~64(12.0%), 65~74(6.4%), 75 and over (3.3%) and in female - under 5(1.8%), 6~19(5.2%), 20~44(11.4%), 45~64(13.6%), 65~74(11.7%), 75 and over(6.4%). Proportion of blindness by causes indicates: Senile cataract (29.7%), Injury and poisoning (13.3%), Refractive errors (11.8%), Infectious diseases (11.3%), Systemic diseases (11.1%), Others (6.5%), Glaucoma (5.4%), and Congenital diseases (2.2%), etc. Rate of blindness by site and type of affection is shown as: Lens diseases (cataract) (38.5%), Optic nerve diseases (12%), Refractive errors (11.6%), Corneal diseases (7.6%), Retinal diseases (7.3%), Glaucoma (6.4%), Atrophia bulbi (3.9%), and Others (3.4%), etc. Some comparisons with different statistics of inland and foreign countries are made. Evaluation of results and problems for a better reliable survey in future are briefly discussed in comment. (Specia] thanks go to our colleagues in ophthalmology at hospitals namely - Drs. Won Shik Yoon, Jung Ja Park, Wun Ho Park, Joon Sup Oh, Sung Koo Choe, Tae Wung Oh, Jae Myung Kim, Yung Tae Jung, In Sang Yoo, Byung Kook Park, Byung II Park, Sung Min Hong, and Bong Yul Kim).
Blindness*
;
Cataract
;
Classification
;
Communicable Diseases
;
Corneal Diseases
;
Diagnosis
;
Female
;
Glaucoma
;
Humans
;
Korea*
;
Lens Diseases
;
Male
;
Ophthalmology
;
Optic Nerve Diseases
;
Poisoning
;
Refractive Errors
;
Retinal Diseases
;
Visual Acuity
3.The Analysis of Patterns and Risk Factors of Newly Developed Vertebral Compression Fractures after Percutaneous Vertebroplasty.
Chai Min YOO ; Kyung Bum PARK ; Soo Hyun HWANG ; Dong Ho KANG ; Jin Myung JUNG ; In Sung PARK
Journal of Korean Neurosurgical Society 2012;52(4):339-345
OBJECTIVE: The purpose of this study was to investigate the patterns and the risk factors of newly developed vertebral compression fractures (VCFs) after percutaneous vertebroplasty (PVP). METHODS: We performed a retrospective review of the 244 patients treated with PVP from September 2006 to February 2011. Among these patients, we selected 49 patients with newly developed VCFs following PVP as the new VCFs group, and the remaining 195 patients as the no VCFs group. The new VCFs group was further divided into 2 groups : an adjacent fractures group and a nonadjacent fractures group. The following data were collected from the groups : age, gender, body weight/height, body mass index (BMI), bone mineral density (BMD) score of the spine and femur, level of initial fracture, restoration rate of anterior/middle vertebral height, and intradiscal cement leakage, volume of polymethylmethacrylate (PMMA). RESULTS: Age, gender, mean body height/weight, mean BMI and volume of PMMA of each of the group are not statistically significantly associated with fractures. In comparison between the new VCFs group and the no VCFs group, lower BMD, intradiscal cement leakage and anterior vertebral height restoration were the significant predictive factors of the fracture. In addition, new VCFs occurrence at the adjacent spines was statistically significant, when the initial fracture levels were confined to the thoracolumbar junction, among the subgroups of new VCFs. CONCLUSION: Lower spinal BMD, the greater anterior vertebral height restoration rate and intradiscal cement leakage were confirmed as risk factors for newly formed VCFs after PVP.
Body Mass Index
;
Bone Density
;
Femur
;
Fractures, Compression
;
Humans
;
Osteoporosis
;
Polymethyl Methacrylate
;
Retrospective Studies
;
Risk Factors
;
Spine
;
Vertebroplasty
4.Reverse Latissimus Dorsi Muscle Flap for an Extensive Soft Tissue Defect Accompanied by Infectious Spondylitis.
Chai Min YOO ; Dong Ho KANG ; Soo Hyun HWANG ; Kyung Bum PARK
Journal of Korean Neurosurgical Society 2012;52(4):423-426
Spinal infection is an inflammatory process around the vertebral body, and it can extend to the epidural space, posterior elements and paravertebral soft tissues. Infectious spondylitis is a rare infectious disorder, which is often associated with significant neurologic deficits and mortality. When an extensive soft tissue defect is accompanied by infectious spondylitis, effective infection control and proper coverage of soft tissue are directly connected to successful outcomes. However, it is not simple to choose the appropriate treatment methods for infectious spondylitis accompanied by a soft tissue defect. Herein, we report a case of severe infectious spondylitis that was accompanied by an extensive soft tissue defect which was closed with a reverse latissimus muscle flap after traumatic spinal epidural hemorrhage.
Epidural Space
;
Hematoma, Epidural, Spinal
;
Infection Control
;
Muscles
;
Neurologic Manifestations
;
Spondylitis
5.Spiritual Care and Spiritual Wellness of Hospice Team Members.
Yang Sook YOO ; Sung Suk HAN ; Jin Ui HONG ; Sun Mi LEE ; Min Jeong SEO ; Chai Soon PARK
Journal of Korean Academy of Fundamental Nursing 2006;13(2):285-293
PURPOSE: This study was conducted to identify the spiritual well-being and spiritual care of hospice team members. METHOD: Between December 2005 and February 2006, a questionnaire was given to 192 hospice team members. The instruments used in this study were the Spiritual Well-Being Scale(SWBS) developed by Paloutzian, & Ellison(1984), and a Spiritual Care Performance Scale developed by the authors. RESULTS: The levels of spiritual well-being were relatively high: significantly lower in the 25-29 years old, in the unmarried, and in the 1-2 million won income groups, and significantly higher in Protestants, Catholics, clergy, and volunteers. The levels of performance of spiritual care were intermediate; significantly higher in clergy, and those with 10 or more years of experience. There was a positive correlation between: levels of spiritual well-being and age; levels of spiritual well-being and performance of spiritual care; and levels of performance of spiritual care and age. The factors affecting the levels of spiritual well-being included religion, age, and performance of spiritual care. The factors affecting the levels of performance of spiritual care were the years of hospice experience and spiritual well-being. CONCLUSION: Because there was a positive correlation between levels of spiritual well-being and performance of spiritual care, there is a need to develop a strategies to increase the spiritual well-being of hospice team members.
Clergy
;
Hospice Care
;
Hospices*
;
Humans
;
Protestantism
;
Surveys and Questionnaires
;
Single Person
;
Spirituality
;
Volunteers
6.Pancreas Divisum, Choledochal Cyst and Pancreatic Stones in a 50-year-old Man.
Young Il MIN ; Sung Koo LEE ; Myung Hwan KIM ; Hwoon Yong JUNG ; Ho Soon CHOI ; Moon Soo KOH ; Dong Jin SUH ; Byeong Moo YOO ; Mee Hwa LEE ; Hyung Gun KIM ; Hee Bok CHAI
Korean Journal of Gastrointestinal Endoscopy 1995;15(4):811-817
A 50-year-old man presented with acute pancreatitis. Abdominal CT showed cystic dilatation of common bile duct and diffuse dilatation of pancreatic duct. ERCP showed pancreas divisum, choledochal cyst and pancreatic duct stones. Minor papilla sphincterotomy and insertion of nasopancreatic tube were performed for drainage of dorsal pancreatic duct. And then, he underwent Whipples operation for excision of choledochal cyst and decompresion of dorsal pancreatic duct.
Cholangiopancreatography, Endoscopic Retrograde
;
Choledochal Cyst*
;
Common Bile Duct
;
Dilatation
;
Drainage
;
Humans
;
Middle Aged*
;
Pancreas*
;
Pancreatic Ducts
;
Pancreatitis
;
Tomography, X-Ray Computed
7.Metastasis-Directed Local Therapy of Hepatic Oligometastasis from Colorectal Cancer and Future Perspective in Radiation Therapy
Gyu Sang YOO ; Chai Hong RIM ; Won Kyung CHO ; Jae-Uk JEONG ; Eui Kyu CHIE ; Hyeon-Min CHO ; Jun Won UM ; Yong Chan AHN ; Jong Hoon LEE ;
Cancer Research and Treatment 2023;55(3):707-719
Introduction of the concept for oligometastasis led to wide application of metastasis-directed local ablative therapies for metastatic colorectal cancer (CRC). By application of the metastasis-directed local ablative therapies including surgical resection, radiofrequency ablation (RFA), and stereotactic ablative body radiotherapy (SABR), the survival outcomes of patients with metastatic CRC have improved. The liver is the most common distant metastatic site in CRC patients, and recently various metastasis-directed local therapies for hepatic oligometastasis from CRC (HOCRC) are widely used. Surgical resection is the first line of metastatic-directed local therapy for HOCRC, but its eligibility is very limited. Alternatively, RFA can be applied to patients who are ineligible for surgical resection of liver metastasis. However, there are some limitations such as inferior local control (LC) compared with surgical resection and technical feasibility based on location, size, and visibility on ultrasonography of the liver metastasis. Recent advances in radiation therapy technology have led to an increase in the use of SABR for liver tumors. SABR is considered complementary to RFA for patients with HOCRC who are ineligible for RFA. Furthermore, SABR can potentially result in better LC for liver metastases > 2-3 cm compared with RFA. In this article, the previous studies regarding curative metastasis-directed local therapies for HOCRC based on the radiation oncologist’s and surgeon’s perspective are reviewed and discussed. In addition, future perspectives regarding SABR in the treatment of HOCRC are suggested.
8.A Case of Human Pulmonary Dirofilariasis in a 48-Year-Old Korean Man.
Hyo Jae KANG ; Young Sik PARK ; Chang Hoon LEE ; Sang Min LEE ; Jae Joon YIM ; Chul Gyu YOO ; Young Whan KIM ; Sung Koo HAN ; Jong Yil CHAI ; Jinwoo LEE
The Korean Journal of Parasitology 2013;51(5):569-572
Dirofilariasis is a rare disease in humans. We report here a case of a 48-year-old male who was diagnosed with pulmonary dirofilariasis in Korea. On chest radiographs, a coin lesion of 1 cm in diameter was shown. Although it looked like a benign inflammatory nodule, malignancy could not be excluded. So, the nodule was resected by video-assisted thoracic surgery. Pathologically, chronic granulomatous inflammation composed of coagulation necrosis with rim of fibrous tissues and granulations was seen. In the center of the necrotic nodules, a degenerating parasitic organism was found. The parasite had prominent internal cuticular ridges and thick cuticle, a well-developed muscle layer, an intestinal tube, and uterine tubules. The parasite was diagnosed as an immature female worm of Dirofilaria immitis. This is the second reported case of human pulmonary dirofilariasis in Korea.
Animals
;
Diagnosis, Differential
;
Dirofilaria immitis/*isolation & purification
;
Dirofilariasis/*diagnosis/parasitology/surgery
;
Humans
;
Lung/pathology
;
Lung Diseases, Parasitic/*diagnosis/parasitology/surgery
;
Male
;
Middle Aged
;
Republic of Korea
;
Treatment Outcome
9.A Study on the Calcium-Binding Protein in Gallbladder Bile.
Myung Hwan KIM ; Sung Ae JUNG ; Hee Bok CHAI ; Hae Kyung KIM ; Tae Hyung KIM ; Byeong Moo YOO ; Dong Wan SEO ; Mee Hwa LEE ; Sung Koo LEE ; Hwoon Yong JUNG ; Young Il MIN
Korean Journal of Medicine 1997;52(4):470-475
OBJECTIVES: Calcium salts are usually present in the center of all types of gallstones, including pure cholesterol stones. It has been postulated that precipitation of calcium salts might act as a nidus for gallstone formation. Our goal was to determine whether a calcium-binding protein was present in bile and whether this protein has any calcium-binding properties. METHODS: Calcium-binding moiety was obtained by addition of CaC12 into the gallbladder bile. Calcium-binding protein was identified by SDS-PAGE (sodium dodecyl sulfate-polyacrylamide gel electrophoresis). The capacity to bind calcium was confirmed by autoradiography with 45Ca++. RESULTS: We identified a protein(M.W.
10.Differential Perspectives by Specialty on Oligometastatic Colorectal Cancer: A Korean Oligometastasis Working Group’s Comparative Survey Study
Won Kyung CHO ; Gyu Sang YOO ; Chai Hong RIM ; Jae-Uk JEONG ; Eui Kyu CHIE ; Yong Chan AHN ; Hyeon-Min CHO ; Jun Won UM ; Yang-Gun SUH ; Ah Ram CHANG ; Jong Hoon LEE ;
Cancer Research and Treatment 2023;55(4):1281-1290
Purpose:
Despite numerous studies on the optimal treatments for oligometastatic disease (OMD), there is no established interdisciplinary consensus on its diagnosis or classification. This survey-based study aimed to analyze the differential opinions of colorectal surgeons and radiation oncologists regarding the definition and treatment of OMD from the colorectal primary.
Materials and Methods:
A total of 141 participants were included in this study, consisting of 63 radiation oncologists (44.7%) and 78 colorectal surgeons (55.3%). The survey consisted of 19 questions related to OMD, and the responses were analyzed using the chi-square test to determine statistical differences between the specialties.
Results:
The radiation oncologists chose “bone” more frequently compared to the colorectal surgeons (19.2% vs. 36.5%, p=0.022), while colorectal surgeons favored “peritoneal seeding” (26.9% vs. 9.5%, p=0.009). Regarding the number of metastatic tumors, 48.3% of colorectal surgeons responded that “irrelevant, if all metastatic lesions are amendable to local therapy”, while only 21.8% of radiation oncologist chose same answer. When asked about molecular diagnosis, most surgeons (74.8%) said it was important, but only 35.8% of radiation oncologists agreed.
Conclusion
This study demonstrates that although radiation oncologists and colorectal surgeons agreed on a majority of aspects such as diagnostic imaging, biomarker, systemic therapy, and optimal timing of OMD, they also had quite different perspectives on several aspects of OMD. Understanding these differences is crucial to achieving multidisciplinary consensus on the definition and optimal management of OMD.