1.Role of Immune-Inflammatory Mechanisms in Alzheimer's Disease and Other Degenerative Diseases.
Journal of the Korean Neurological Association 2002;20(6):575-584
Recent studies suggest that alterations of the immune-inflammatory system contribute to the pathogenesis of Alzheimer's disease (AD), Parkinson's disease (PD) and Amyotrophic Lateral Sclerosis (ALS). Neuroinflammatory response initiated by innate immune mechanism that self-attack on neurons, known as "autotoxicity" could be an initial key mechanism of chronic neurodegenerative diseases. Numerous experimental and pathological evidences showing upregulated inflammatory cytokines and chemokines, and the activation of complement cascade and accumulation of activated microglia in damaged regions support the important role of immune-inflammatory mechanism in the pathogenesis of neurodegenerative diseases. Epidemiological studies on the non-steroidal anti-inflammatory drugs (NSAIDs), coupled with results from animal model of AD, PD and ALS, have prompted the studies to determine if immune-inflammatory modifying agents or molecules could be a new therapeutic paradigm of neurodegenerative diseases. Molecules inhibiting proinflammatory cytokines and chemokines released from microglia, agents that inhibit activation of microglia, COX2 and complement system are now considered as a good candidate of immune-inflammatory modulating treatment. By better understanding inflammatory and immunoregulatory processes, it should be possible to develop anti-inflammatory approach that may not completely cure AD, PD, and ALS but will likely help slow the progression or delay the onset of these devastating diseases.
Alzheimer Disease*
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Amyotrophic Lateral Sclerosis
;
Chemokines
;
Complement System Proteins
;
Cytokines
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Microglia
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Models, Animal
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Neurodegenerative Diseases
;
Neurons
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Parkinson Disease
2.Excretory bladder: the source of cysteine proteases in Paragonimus westermani metacercariae.
Hyun Jong YANG ; Young Bae CHUNG ; Shin Yong KANG ; Yoon KONG ; Seung Yull CHO
The Korean Journal of Parasitology 2002;40(2):89-92
The cysteine proteases of Paragonimus westermani metacercariae are involved in metacercarial excystment, host immune modulation, and possibly in tissue penetration. In order to clarify the origin of the enzymes, 28 and 27 kDa cysteine proteases in metacercarial excretory-secretory products were purified through the FPLC system using Mono Q column chromatography. The polyclonal antibodies to the enzymes were produced in BALB/c mice. Immunolocalization studies revealed that both cysteine proteases were distributed at the linings of excretory bladder and excretory concretions of the metacercariae. It was suggested that the excretory epithelium of P. westermani undertake the secretory function of metacercarial cysteine proteases, in addition to its role as a route for eliminating waste products.
Animals
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Chromatography, Liquid
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Computational Biology
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Cysteine Endopeptidases/analysis/isolation & purification/*physiology
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Immunohistochemistry
;
Mice
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Mice, Inbred BALB C
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Paragonimus/anatomy & histology/*enzymology
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Support, Non-U.S. Gov't
3.Spontaneous Intracranial Hypotension.
Doo Sik KONG ; Jong Soo KIM ; Kwan PARK ; Do Hyun NAM ; Whan EOH ; Hyung Jin SHIN ; Seung Chyul HONG ; Jong Hyun KIM
Journal of Korean Neurosurgical Society 2000;29(2):240-248
No abstract available.
Intracranial Hypotension*
4.Development of Search Engine related to Korean Physical Anthropology Data by Internet.
Wu Chol SONG ; Ki Seok KOH ; Seung Jin KONG ; Jung A LEE ; Hyun Jun SOHN
Korean Journal of Physical Anthropology 2000;13(2):149-159
By finding the documents of Korean physical anthropology in one place easily, everyone can use them fruitfully. We developed internet site to search them, which published from early 20th century to present days. We also analyzed documents of physical anthropology and databased the tables which is considered to be kernel of results. The advantage of this internet site is followings. We classified the documents of physical anthropology by body regions and we also classified them in detail to reach them easily. The documents are also divided into materials and its methods to search conveniently. Everyone can search a data by classification and also by using a keyword they can find document or data. There are 3 steps to search. First step is searching the title of document and author, second step is searching the name of table including the first step and the last step is searching items in table. If they don't know the contents they can search data by index. We added some pictures and explanations to restore the document or table, which are difficult and hard to understand the point. By these additions, we could understand them briefly. We could quote from past data and also we could easily compare previous data with ours by using this search engine.
Anthropology
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Anthropology, Physical*
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Body Regions
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Classification
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Internet*
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Search Engine*
5.An Experimental Study on Cerebral Paragonimiasis using Cats.
Yoon KONG ; Seung Yull CHO ; Moon Hee HAN ; Jin Mo GOO ; In Kyu YU ; Yong Moon SHIN ; Seon Kyu LEE ; Kee Hyun CHANG ; Sung Wook CHO
Journal of the Korean Radiological Society 1994;30(6):1003-1012
PURPOSE: It is important to diagnose paragonimiasis in early active stage because it can be dured by chemotherapy. However, it is difficult to make a correct diagnosis of cerebral paragonimiasis in the early active stage, and the radiographic findings of cerebral paragonimiasis have been rarely reported. Thus, this experimental study was designed to produce early active cerebral paragonimiasis and to demonstrate radiologic-pathologic correlations. MATERIALS AND METHODS: In 8 cats, 7-8 metacercariae of Paragonimus westerrnani were directly introduced into the brain parenchyma of each cat's after trephination of the skull. In anogher 16 cats, the juvenile worms and the adult worms that had developed for varying periods (2 weeks, 4 weeks, 6 weeks, 8 weeks and 12 weeks) in the lunges of another cats were introduced into the brain parenchyma of each cat's with the same procedures described above. Follw-up MR images and chest radiographs were obtained at 2 days, 1 weeks, 2 weeks, 4 weeks and 8 weeks after innoculation. The autopsies and histopathological examinations of the cat's brain were undertaken in 22 cats. In 9 cats that were suspected with pulmonary lesions on chest radiograph, the soft tissue radiographs of inflated-fixed lungs were obtained. RESULTS: In one cat with innoculation of adult worm, acute suppurative inflammation of the brain parenchyma was demonstrated. But the other cats with innoculction of adult worm or juvenile worm and the cats with innoulation of metacercaris did not reveal any evidence of acute cerebral paragonimiasis. More than half of the introduced metacercariae(5 out of 8 cats) were found in the lung parenchyma, while only 25%(4 out of 16 cats) of the adult worm innoculated cats were. CONCLUSION: Acute suppurative inflammation suggesting acute stage cerebral paragonimiasis was obtained in one case of adult worm innoculated cat. Most of the innoculated metacercariae and some of the juvenile worms or adult worms were migrated to the lungs.
Adult
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Animals
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Autopsy
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Brain
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Cats*
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Diagnosis
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Drug Therapy
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Humans
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Inflammation
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Lung
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Metacercariae
;
Paragonimiasis*
;
Paragonimus
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Radiography, Thoracic
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Skull
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Trephining
6.Development of a Pneumatic Tensioning Device for Gap Measurement during Total Knee Arthroplasty.
Dai Soon KWAK ; Chae Gwan KONG ; Seung Ho HAN ; Dong Hyun KIM ; Yong IN
Clinics in Orthopedic Surgery 2012;4(3):188-192
BACKGROUND: Despite the importance of soft tissue balancing during total knee arthroplasty (TKA), all estimating techniques are dependent on a surgeon's manual distraction force or subjective feeling based on experience. We developed a new device for dynamic gap balancing, which can offer constant load to the gap between the femur and tibia, using pneumatic pressure during range of motion. METHODS: To determine the amount of distraction force for the new device, 3 experienced surgeons' manual distraction force was measured using a conventional spreader. A new device called the consistent load pneumatic tensor was developed on the basis of the biomechanical tests. Reliability testing for the new device was performed using 5 cadaveric knees by the same surgeons. Intraclass correlation coefficients (ICCs) were calculated. RESULTS: The distraction force applied to the new pneumatic tensioning device was determined to be 150 N. The interobserver reliability was very good for the newly tested spreader device with ICCs between 0.828 and 0.881. CONCLUSIONS: The new pneumatic tensioning device can enable us to properly evaluate the soft tissue balance throughout the range of motion during TKA with acceptable reproducibility.
Arthroplasty, Replacement, Knee/*instrumentation/methods
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Biomechanics
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Equipment Design
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Femur/surgery
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Humans
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Knee Joint/physiology/*surgery
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Mechanical Processes
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Range of Motion, Articular
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Reproducibility of Results
;
Tibia/surgery
7.Comparison of the seroconversion rate after primary hepatitis B vaccination and after revaccination of non-responders in full-term infants according to mother's HBsAg seropositivity.
Jang Hee KANG ; Jae Won MOON ; Seung Hyun KONG ; Kwang Su HWANG ; Ji Sun MOK ; Hyeon Jung LEE
Korean Journal of Pediatrics 2008;51(11):1165-1171
PURPOSE: This study aimed to identify the true extent of non-responsiveness in full-term infants born from HBsAg-negative or HBsAg-positive mothers and vaccinated against hepatitis B virus (HBV) at 0, 1, and 6 months of age and to evaluate the effect of revaccination among non-responders. METHODS: The study included 716 full-term infants born in 2004-2007. Of 716, 662 infants (A group) were born to HBsAg- negative mothers and 54 infants (B group: 50, except HBsAg-positive infants) were born to HBsAg-positive mothers. All infants were administered DNA recombinant vaccines at 0, 1, and 6 months of age. B group infants received hepatitis B immunoglobulin at birth. Anti-HBs titers were tested at 7-12 and 9-15 months in A and B groups, respectively. Three revaccination doses were administered to non-responders whose anti-HBs titers were under 10 mIU/ml; revaccinated infants were retested at 1-3 months after last vaccination. The association between HBeAg seropositivity of mother and the failure of HBV immunoprophylaxis was evaluated. RESULTS: The seroconversion rates after primary hepatitis B vaccination were higher in A group (94.1%) than in B group (78%, P<0.001). The seroconversion rates were high in revaccinated infants (A group non-responders: 96.9%, B group non- responders: 87.5%). The failure of HBV immunoprophylaxis was significantly associated with maternal HBeAg seropositivity (P<0.001). CONCLUSION: The seroconversion rates after primary hepatitis B vaccination were low in B group infants. Revaccination of non-responders in B group was very effective. Therefore, anti-HBs testing and revaccination of B group is very important. Revaccination of non-responders in A group was also very effective. Thus, testing the immune status of infants born to HBsAg-negative mothers even after primary hepatitis B vaccination should be considered. However, to realize this, further studies on the cost-effectiveness of anti-HBs testing in healthy full-term infants are necessary.
DNA
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Hepatitis
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Hepatitis B
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Hepatitis B e Antigens
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Hepatitis B Surface Antigens
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Hepatitis B virus
;
Humans
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Immunization, Secondary
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Immunoglobulins
;
Infant
;
Mothers
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Parturition
;
Vaccination
;
Vaccines, Synthetic
8.A Case of Short Arm Deletion and Long Arm Duplication at Chromosome 3.
Seung Hyun KONG ; Jeong Il SEO ; Jang Hui KANG ; So Young JUNG ; Ji Sun MOK
Korean Journal of Pediatrics 2005;48(12):1389-1393
The long arm duplication of chromosome 3 was reported for the first time in 1966 by Falek et al., and Hirschhorn et al. came to identify the duplication of 3q21--> qter region in 1973. In most cases of duplication 3q syndrome patients, pure duplication of 3qter is believed to be rare and is often reported accompanied with deletion of another segment of the chromosome. Approximately 75 percent of parents of the patient in the meantime have been demonstrated to have unbalanced translocations or inversions of the chromosome. Partial deletion of the distal part of the short arm of chromosome 3 was first reported by Verjaal and De Nef in 1978 and terminal deletion of chromosome 3 (3p25- qter) has been observed in most cases. In karyotyping of chromosomes of immature infants showing the manifestations of flat occiputs, low set ears, hypertelorism, broad nasal roots, thin lips, web necks, hypotonia, hypertrichosis skin, cryptorchidism etc, we experienced a case diagnosed as 46, XY, rec (3) dup (3) (q21) del (3) (p25) inv (3) (p25q21).
Infant
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Male
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Female
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Humans
9.Far Lateral Extraforaminal Disc Herniation after Percutaneous Laser Lumbar Discectomy.
Byoung Jun KONG ; Koang Hum BAK ; Seung Hoon OH ; Jae Min KIM ; Choong Hyun KIM ; Nam Kyu KIM
Journal of Korean Neurosurgical Society 1997;26(11):1614-1617
The authors report a case of far lateral disc herniation at L4-5 found one year after percutaneous laser lumbar discectomy. The patient was found to be suffering from new-onset right lumbar radiculopathy 6 months after his first operation, and post operative lumbar MRI confirmed a far lateral extraforaminal disc herniation at L4-5, with compression of the nerve. This corresponded to the nucleotomy site of the probe. The patient underwent surgery employng the combined paraspinal intertransverse and interlaminar approach, and his symptoms were relieved. This case emphasizes the importance of removing nuclear material, and shows that remaining material can herniate through a percutaneous discectomy window.
Diskectomy*
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Diskectomy, Percutaneous
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Humans
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Magnetic Resonance Imaging
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Radiculopathy
10.Experiences of Amnioreduction and Emergency Cerclage for Advanced Cervical Incompetence.
So Young KWON ; Seung Il HAN ; Hyeon Chul KIM ; Du Sik KONG ; Gun Ho LEE ; In Hyun KIM
Korean Journal of Obstetrics and Gynecology 2004;47(6):1218-1222
Cervical incompetence is one of the main contributors to repeated pregnancy loss and preterm delivery. Typically it results in progressive cervical dilatation, leading to a painless second or early third trimester abortion. Emergency cerclage can be used in the setting of advanced cervical incompetence, even when fetal membranes bulge through the dilated cervix. To facilitate the procedure, various techniques have been developed to replace the fetal membranes into the uterine cavity. We performed six successful cases of emergency cerclage combined with amnioreduction in advanced incompetent internal os of cervix (IIOC). Interval from emergency cerclage to delivery was 8.1 +/- 2.4 weeks (range 4-10 weeks) and we delivered viable fetuses in all but one. Hereby we report our experiences with a brief review of literature.
Cervix Uteri
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Emergencies*
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Extraembryonic Membranes
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Female
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Fetus
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Humans
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Labor Stage, First
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Pregnancy
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Pregnancy Trimester, Third