1.Comparison of Sleep Indices between Both Wrist Actigraphies and Nocturnal Polysomnography.
Byung Hak SHIN ; Doo Heum PARK ; Hyun Kwon LEE ; Jaehak YU ; Seung Ho RYU ; Ji Hyeon HA ; Hyeon Sil SHIN ; Seok Chan HONG
Sleep Medicine and Psychophysiology 2007;14(1):20-25
The present study compared the actigraphic indices between both wrist actigraphies (WATGs), and the sleep estimates between each WATG and nocturnal polysomnography (NPSG) to assess their differences and consistencies. We studied 22 right-handed subjects (mean age 43.9+/-13.3 years, M:F=14:8) with untreated primary sleep disorders (primary insomnia=8, simple snorer=2, obstructive sleep apnea=12) undergone by overnight both WATGs and NPSG, simultaneously. Comparison and correlation were analyzed between right and left wrist actigraphic data. In the sleep estimates of both WATGs and NPSG, each WATG was compared and correlated with NPSG in sleep period time (SPT), total sleep time (TST), sleep latency (SL), sleep efficiency (SE) and wake time (WT). Sleep indices between both WATGs showed significant positive correlations with no correlations in SL and fragmentation index (FI). There were no differences in sleep indices between both WATGs. SPTs of both WATGs, SL of left WATG, and TST of right WATG showed positively significant correlations, and SE of right WATG did negatively significant correlation in sleep indices between each WATG and NPSG. As each WATG was compared to PSG, SPTs of both WATGs and WT of right WATG were decreased, and TST and SE of right WATG and SL of left WATG were increased. Inconsistent SL and FI between both WATGs indicate that the activities between both WATGs can differentially happen during wake or arousal. Inconsistent sleep estimates between each WATG and NPSG may indicate the limited usefulness in measuring and analyzing one-night sleep by using WATG.
Arousal
;
Functional Laterality
;
Polysomnography*
;
Sleep Wake Disorders
;
Wrist*
2.Non-systemic Vasculitic Neuropathy Presenting as Ascending Paralysis.
Hyeon Seok YU ; Sung Min KIM ; Ki Han KWON ; Byung Chul LEE ; Jun Hyeon SHIN ; In Soo KANG
Journal of the Korean Geriatrics Society 1999;3(4):56-61
Typical vasculitic neuropathy commonly manifests as a subacute multiple mononeuropathy, symmetrical or asymmetrical sensori-motor polyneuropathy. Various clinical presentations of peripheral neuropathy may confuse the diagnostic approach sometimes. A 76-year old man presented progressive areflexic ascending paralysis. gait ataxia, severe vibration and position sense impairment for 1 month. We initially considered as subacute demyelinating polyneuropathy. Electrophysiologic studies showed mainly axonopathy with some evidence of demyelination. We performed sural nerve biopsy and diagnosed as vasculitic neuropathy. No laboratory data or clinical findings favored systemic vasculitic involvement. So we concluded vasculitis confined to the peripheral nerves. Vasculitic neuropathy rarely presented as large myelinated nerve fiber disease. It should be considered the clinical variability of vasculitic neuropathy so extensive studies are needed in the case of peripheral polyneuropathy with indefinite cause.
Aged
;
Biopsy
;
Demyelinating Diseases
;
Gait Ataxia
;
Humans
;
Mononeuropathies
;
Nerve Fibers, Myelinated
;
Paralysis*
;
Peripheral Nerves
;
Peripheral Nervous System Diseases
;
Polyneuropathies
;
Proprioception
;
Sural Nerve
;
Vasculitis
;
Vibration
3.The Effects of Venlafaxine and Dexamethasone on the Expression of HSP70 in Rat C6 Glioma Cells.
Jaehak YU ; Sungwon ROH ; Jun Seok LEE ; Byung Hwan YANG ; Mi Ran CHOI ; Young Gyu CHAI ; Seok Hyeon KIM
Psychiatry Investigation 2010;7(1):43-48
OBJECTIVE: The present study aimed to determine the intracellular action of the antidepressant, venlafaxine, in C6 glioma cells using heat shock protein 70 (HSP70) immunocytochemistry and HSP70 Western blots; HSP70 is known to be associated with stress and depression. METHODS: The extent of HSP70 expression was measured after rat C6 glioma cells were treated with 1) dexamethasone only, 2) venlafaxine only, 3) simultaneous venlafaxine and dexamethasone, or 4) dexamethasone after venlafaxine pretreatment. Dexamethasone (10 microM, 6 hours) did not affect the level of HSP70 expression relative to control. RESULTS: Short-term (1 hour) venlafaxine treatment significantly increased the level of HSP 70 expression. Simultaneous long-term (72 hours) venlafaxine and dexamethasone treatment significantly reduced the level of HSP70 expression. Dexamethasone treatment administered following long-term (24 and 72 hours) pretreatment with venlafaxine also significantly reduced the level of HSP70 expression. CONCLUSION: Short-term treatment with venlafaxine increases the expression of HSP70, but prolonged treatment with dexamethasone suppresses the venlafaxine-induced expression of HSP70. These findings suggest that HSP70 and dexamethasone play a significant role in the pathophysiology of depression.
Animals
;
Cyclohexanols
;
Depression
;
Dexamethasone
;
Glioma
;
Heat-Shock Proteins
;
HSP70 Heat-Shock Proteins
;
Immunohistochemistry
;
Rats
;
Venlafaxine Hydrochloride
4.Medial Meniscal Root Repair Using Curved Guide and Soft Suture Anchor.
Su Keon LEE ; Bong Seok YANG ; Byeong Mun PARK ; Ji Ung YEOM ; Ji Hyeon KIM ; Jeong Seok YU
Clinics in Orthopedic Surgery 2018;10(1):111-115
Medial meniscal root tears have been repaired using various methods. Arthroscopic all-inside repair using a suture anchor is one of the popular methods. However, insertion of the suture anchor into the proper position at the posterior root of the medial meniscus is technically difficult. Some methods have been reported to facilitate suture anchor insertion through a high posteromedial portal, a posterior trans-septal portal, or a medial quadriceptal portal. Nevertheless, many surgeons still have difficulty during anchor insertion. We introduce a technical tip for easy suture anchor insertion using a 25° curved guide and a soft suture anchor through a routine posteromedial portal.
Menisci, Tibial
;
Surgeons
;
Suture Anchors*
;
Sutures*
;
Tears
5.Medulla Oblangata Injury Caused by Non-Penetrating Trauma by Chopsticks.
Hyeon Ju JIN ; Jae Seong YU ; Yu Kyung KIM ; Ho Seok GANG ; Se Jin LEE
Yeungnam University Journal of Medicine 2010;27(2):122-126
It is common in childhood that children suffer intracavity or head injury, falling down backward, having chopsticks in their mouth. But most of them have paralysis of upper and lower extremity because of secondary damage by penetrating injury of brainstem and spine. We could not find this case which have shown infaction of medulla oblangata on MRI and paralysis by impact only without clear penetrating evidence. So the authors report this case with study of literature because we experience one case that have high signal density in brainstem on MRI, Loss of consciousness, and left hemiplegia without clear penetrating evidence after falling down backward, having chopsticks in her mouth and regard it rare case.
Brain Stem
;
Child
;
Craniocerebral Trauma
;
Hemiplegia
;
Humans
;
Lower Extremity
;
Mouth
;
Paralysis
;
Spine
;
Unconsciousness
6.Hematological Changes Associated with Theileria orientalis Infection in Korean Indigenous Cattle.
Suhee KIM ; Do Hyeon YU ; Sung Woo KANG ; Jeong Byoung CHAE ; Kyoung Seong CHOI ; Hyeon Cheol KIM ; Bae Keun PARK ; Joon Seok CHAE ; Jinho PARK
The Korean Journal of Parasitology 2017;55(5):481-489
Tick-borne pathogens can cause serious problems in grazing cattle. However, little information is available on tick-mediated diseases in cattle grazing on mountains. Thus, this study aimed to understand the potential problems related to tick-borne diseases in grazing cattle through the investigation of prevalent tick-transmitted infections, and their associated hematological changes, in terms of season and grazing type in Korean indigenous cattle (=Hanwoo). Hanwoo cattle from 3 regions of the Republic of Korea (=Korea) were either maintained indoors or placed on grassy mountains from spring to fall of 2014 and 2015. Cattle that grazed in mountainous areas showed a greater prevalence of tick-borne infections with an increased Theileria orientalis infection rate (54.7%) compared to that in non-grazing cattle (16.3%) (P < 0.001). Accordingly, the red blood cell (RBC) count and hematocrit (HCT) values of grazing cattle were significantly lower than those of non-grazing cattle throughout the season (P < 0.05). Moreover, RBC, hemoglobin (Hb), and HCT of T. orientalis-positive group were significantly lower than those of T. orientalis-negative group (P < 0.05). T. orientalis is a widespread tick-borne pathogen in Korea. Grazing of cattle in mountainous areas is closely associated with an increase in T. orientalis infection (RR=3.4, P < 0.001), and with consequent decreases in RBC count and HCT. Thus, these findings suggest that the Hanwoo cattle in mountainous areas of Korea are at a high risk of infection by T. orientalis, which can lead to hematological alterations. This study highlights the necessity of preventive strategies that target T. orientalis infection.
Animals
;
Cattle*
;
Erythrocytes
;
Hematocrit
;
Korea
;
Prevalence
;
Republic of Korea
;
Seasons
;
Theileria*
;
Tick-Borne Diseases
7.A Horsehair Worm, Gordius sp. (Nematomorpha: Gordiida), Passed in a Canine Feces.
Eui Ju HONG ; Cheolho SIM ; Joon Seok CHAE ; Hyeon Cheol KIM ; Jinho PARK ; Kyoung Seong CHOI ; Do Hyeon YU ; Jae Gyu YOO ; Bae Keun PARK
The Korean Journal of Parasitology 2015;53(6):719-724
Nematomorpha, horsehair or Gordian worms, include about 300 freshwater species in 22 genera (Gordiida) and 5 marine species in 1 marine genus (Nectonema). They are parasitic in arthropods during their juvenile stage. In the present study, the used gordian worm was found in the feces of a dog (5-month old, male) in July 2014. Following the worm analysis using light and scanning electron microscopes, the morphological classification was re-evaluated with molecular analysis. The worm was determined to be a male worm having a bi-lobed tail and had male gonads in cross sections. It was identified as Gordius sp. (Nematomorpha: Gordiidae) based on the characteristic morphologies of cross sections and areole on the cuticle. DNA analysis on 18S rRNA partial sequence arrangements was also carried out, and the gordiid worm was assumed to be close to the genus Gordius based on a phylogenic tree analysis.
Animals
;
Dog Diseases/diagnosis/*parasitology
;
Dogs
;
Feces/*parasitology
;
Helminthiasis, Animal/diagnosis/*parasitology
;
Helminths/classification/genetics/*isolation & purification
;
Male
;
Molecular Sequence Data
;
Phylogeny
8.Asymptomatic Common Iliac Artery Stenosis as a Cause of Renal Allograft Dysfunction and Uncontrolled Hypertension.
Sang Bin LEE ; Hyeon Jeong KANG ; Hee Jun KANG ; Sun Hee JANG ; Hyeon Seok HWANG ; Yoon Kyung CHANG ; Suk Young KIM ; Yu Ah HONG
The Journal of the Korean Society for Transplantation 2016;30(3):133-137
Occlusive disease of the iliac segment, proximal to the transplant artery (prox-TRAS), in kidney transplant recipients is a rare complication. Prox-TRAS, located in the common iliac artery, is extremely rare in these patients. Herein, we present an interesting case of a common iliac artery stenosis that manifested as decreased allograft function and uncontrolled blood pressure without other typical clinical symptoms. The patient was successfully treated with percutaneous luminal angioplasty and stent insertion.
Allografts*
;
Angioplasty
;
Arteries
;
Blood Pressure
;
Constriction, Pathologic*
;
Humans
;
Hypertension*
;
Iliac Artery*
;
Kidney
;
Kidney Transplantation
;
Phenobarbital
;
Stents
;
Transplant Recipients
9.Urogonimus turdi (Digenea: Leucochloridiidae) from the White’s Thrush, Zoothera aurea, in the Republic of Korea
Hyeon Cheol KIM ; Eui Ju HONG ; Si Yun RYU ; Jinho PARK ; Do Hyeon YU ; Joon Seok CHAE ; Kyoung Seong CHOI ; Cheolho SIM ; Bae Keun PARK
The Korean Journal of Parasitology 2019;57(5):461-467
Avian trematodes, Urogonimus turdi (Digenea: Leucochloridiidae), were collected from the intestine of wild birds, Zoothera aurea, 2013–2017 in the Daejeon Metropolitan City, Korea. The body was ellipsoidal, attenuated and/or round ends, 1,987–2,120 long and 819–831 μm wide. The oral sucker was subterminal, rounded anteriorly, and 308–425×351–432 μm in size; the prepharynx and esophagus were almost lacking; pharynx was well-developed, 142–179×78–170 μm in size; intestine narrow, bifurcating just after pharynx, ascending to the oral sucker before looping posteriorly and terminating near the posterior end; ventral sucker larger, in almost median, 536–673×447–605 μm and approximately 1.5 times larger than oral sucker. A phylogenetic tree constructed with 18S ribosomal RNA showed inter- and intraspecific relationships. Based on these morphological and molecular findings, we report here a U. turdi from White’s thrushes in Korea.
Birds
;
Candidiasis, Oral
;
Esophagus
;
Intestines
;
Korea
;
Pharynx
;
Republic of Korea
;
RNA, Ribosomal, 18S
;
Songbirds
;
Trees
10.Morphological and Molecular Characterization of Toxocara apodemi (Nematoda: Ascarididae) from Striped Field Mice, Apodemus agrarius, in Korea
Hyeon Cheol KIM ; Eui Ju HONG ; Si Yun RYU ; Jinho PARK ; Jeong Gon CHO ; Do Hyeon YU ; Joon Seok CHAE ; Kyoung Seong CHOI ; Bae Keun PARK
The Korean Journal of Parasitology 2020;58(4):403-411
Adult ascarid worms from the field mice, Apodemus agrarius, were observed with a light and scanning electron microscope, and molecularly analized with 18S rRNA gene. In the scanning electron microscope, 3 prominent labia were present in the anterior end of male and female worms, but the interlabia and gubernaculum were absent. Scanning electron micrographs showed cervical alae as vestigial organs that looked like a slightly uplifted superficial sewing stitch. Total 6 pairs of post-cloacal papillae were observed on the tail of the male worms. The tail of female worms was blunt and conical shape with a spine-like structure, mucron. The eggs were sub-globular, coated with the albuminous layer and 73 by 82 μm in average size. The superficial pits of T. apodemi egg (mean 8.6×6.7 μm) are obviously bigger than those of Toxocara spp. The partial sequence of 18S rRNA showed the sequence homology of Toxocara canis (99.6%), Toxocara cati (99.4%), Toxascaris leonina (99.4%), and Toxocara vitulorum (99.2%). Conclusively, it was confirmed that ascarid nematodes, Toxocara apodemi, recovered from striped field mice in Korea are taxonomically conspecific relationship with genus Toxocara and genetic divergence from other Toxocara species.