1.Stereotactic Removal of Intracerebral Sparganum: A Case Report.
Li Gyu YUN ; Soon Kwan CHOI ; Bum Tae KIM ; Won Han SHIN ; Bark Jang BYUN
Journal of Korean Neurosurgical Society 1994;23(9):1079-1083
Intracerebral sparaganosis, caused by the Plerocercoid of Spirometa mansoni, is very rare. A 54-yeas-old man, who has a history of having eaten raw frogs and snakes 20 years ago, was admitted with 2 years duration of focal seizure and monoparesis on right upper extremity. The brain CT scan and MRI demonstrated extensive and irregular hypodense lesion with punctate calcification in subcortical region of left parietal lobe. A whitish ribbon-like moving parasite could be picked up using CRW stereotactic frame under local anesthesia. On pathological examination was disclosed a sparganum with characteristic calcospherule. Also, preoperative ELISA test for sparganum-specific antibody(IgG) showed positive reaction to sparganum absorbance 1.04 in serum and 0.61 in CSF, respectively(normal abs. : below 0.22). Immediately after removal of parasite, the seizure and motor weakness disappeared. Stereotactic removal of cerebral sparganum can be considered a useful method in selected patients.
Anesthesia, Local
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Brain
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Enzyme-Linked Immunosorbent Assay
;
Humans
;
Magnetic Resonance Imaging
;
Parasites
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Paresis
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Parietal Lobe
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Seizures
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Snakes
;
Sparganum*
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Tomography, X-Ray Computed
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Upper Extremity
2.Malignant Fibrous Histiocytoma Presenting as Osteolytic Lesion on the Left Temporal Bone: A Case Report.
Li Gyu YUN ; Won Han SHIN ; Bum Tae KIM ; Soon Kwan CHOI ; Bark Jang BYUN ; Dong Wha LEE
Journal of Korean Neurosurgical Society 1995;24(4):471-476
Malignant fibrous histiocytoma(MFH) is well known as a soft tissue tumor of the extremities and retroperitoneum, but MFH of the skull is very rare. We report a case of MFH arising from the temporal bone in a 27-year-old male. This tumor presented as an osteolytic lesion and soft tissue mass on the left temporal bone without obvious invasion of the underlying brain parenchyma. The patient underwent tumor and bone removal, follwed by radiation therapy. Hostologic examination disclosed pleomorphic spindle cells in a storiform pattern and tumor cells showed positive reaction for vimentin, lysozyme, alpha 1-antitrypsin and (1-antichymotrypsin in immunohistochemical stain.
Adult
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alpha 1-Antitrypsin
;
Brain
;
Extremities
;
Histiocytoma, Malignant Fibrous*
;
Humans
;
Male
;
Muramidase
;
Skull
;
Temporal Bone*
;
Vimentin
3.Serum Ferritin Concentration in the Early Third Trimester of Pregnancy and Risk of Preterm Birth and Low Birth Weight Based on Gestational Age
Tae Gyu AHN ; Lan LI ; Se Jin LEE ; Yoon Hyeon HU ; Chorong KIM ; Jong Yun HWANG
Journal of the Korean Society of Maternal and Child Health 2021;25(1):55-62
Objective:
Although serum ferritin is considered the best measure of total body iron, with low levels indicating iron deficiency, recent studies have shown that high levels are associated with gestational diabetes, premature birth, and low birth weight. This study aimed to analyze the association between serum ferritin levels in the third trimester of pregnancy and low birth weight and preterm birth.
Methods:
This study included pregnant women who delivered a single fetus at Kangwon National University Hospital between January 2009 and December 2013 and in whom serum ferritin levels were measured between 28 and 34 weeks of gestation. The association between serum ferritin levels measured in the early third trimester of pregnancy and preterm birth and low birth weight infants was analyzed.
Results:
A total of 1,079 women fulfilled the study criteria and had their serum ferritin level measured during the third trimester (28–33.9 weeks of gestation) and later delivered at Kangwon National University Hospital. Comparison of the group with serum ferritin levels above the 75th percentile and those below the 25th percentile at the beginning of the third trimester revealed that the incidence of preterm births (<34 weeks of gestation, <37 weeks of gestation) and low birth weight were significantly higher in the group with serum ferritin levels above the 75th percentile than those below the 25th percentile (p<0.05). When variable factors were controlled through multiple regression analysis, the group whose serum ferritin levels were above the 75th percentile at 30–31.9 weeks of gestation had the highest risk of preterm birth before 34 weeks of gestation (adjusted odds ratio [OR], 7.85; 95% confidence interval [CI], 1.32–29.9) and low birth weight (adjusted OR, 6.49; 95% CI, 2.10–20.0).
Conclusion
In this study, when serum ferritin was high in the third trimester of pregnancy, it was significantly increased with preterm birth (<34 and 37 weeks) and low birth weight. In particular, when serum ferritin levels were high at 30–31.9 weeks of gestation, the risk of premature birth before 34 weeks and low birth weight was statistically highest.
4.Serum from pregnant women with gestational diabetes mellitus increases the expression of FABP4 mRNA in primary subcutaneous human pre-adipocytes.
Lan LI ; Se Jin LEE ; Song Yi KOOK ; Tae Gyu AHN ; Ji Yeon LEE ; Jong Yun HWANG
Obstetrics & Gynecology Science 2017;60(3):274-282
OBJECTIVE: Gestational diabetes mellitus (GDM) is defined as glucose intolerance first detected during pregnancy. It can result in pregnancy complications such as birth injury, stillbirth. Fatty acid-binding protein 4 (FABP4), found in adipose tissue, is associated with insulin resistance, and type 2 diabetes. The aim of this study was to investigate whether FABP4 in the placenta and decidua of pregnant women with GDM is higher than that in normal pregnant women, and whether serum from pregnant women with GDM may cause adipocytes to secrete more FABP4 than does serum from a normal pregnant group. METHODS: We obtained placentas, deciduas, and serum from 12 pregnant women with GDM and 12 normal pregnant women and performed enzyme-linked immunosorbent assay, real time quantitative-polymerase chain reaction. We cultured human pre-adipocytes for 17 days with GDM and non-GDM serum and performed western blot, real time quantitative-polymerase chain reaction, and oil red O staining. RESULTS: Expression of FABP4 in serum, placenta and decidua of pregnant women with GDM was significantly higher than that in normal pregnant women. Serum from pregnant women with GDM increased the expression of FABP4 mRNA and decreased the expression of adiponectin mRNA in human pre-adipocytes significantly. Adipocyte cultured in GDM serum showed significantly greater lipid accumulation than those cultured in normal serum. CONCLUSION: Our results suggest that FABP4 is higher in placenta and decidua from pregnant women with GDM. Increased circulating FABP4 in maternal serum from pregnant women with GDM may originate from adipocytes and the placenta. Circulating FABP4 can induce increased insulin resistance and decreased insulin sensitivity.
Adipocytes
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Adiponectin
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Adipose Tissue
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Birth Injuries
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Blotting, Western
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Decidua
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Diabetes, Gestational*
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Enzyme-Linked Immunosorbent Assay
;
Female
;
Glucose Intolerance
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Humans
;
Humans*
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Insulin Resistance
;
Placenta
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Pregnancy
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Pregnancy Complications
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Pregnancy in Diabetics
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Pregnant Women*
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RNA, Messenger*
;
Stillbirth
5.KHG26792 Inhibits Melanin Synthesis in Mel-Ab Cells and a Skin Equivalent Model.
Hailan LI ; Jandi KIM ; Hoh Gyu HAHN ; Jun YUN ; Hyo Soon JEONG ; Hye Young YUN ; Kwang Jin BAEK ; Nyoun Soo KWON ; Young Sil MIN ; Kyoung Chan PARK ; Dong Seok KIM
The Korean Journal of Physiology and Pharmacology 2014;18(3):249-254
The purpose of this study is to characterize the effects of KHG26792 (3-(naphthalen-2-yl(propoxy) methyl)azetidine hydrochloride), a potential skin whitening agent, on melanin synthesis and identify the underlying mechanism of action. Our data showed that KHG26792 significantly reduced melanin synthesis in a dose-dependent manner. Additionally, KHG26792 downregulated microphthalmia-associated transcription factor (MITF) and tyrosinase, the rate-limiting enzyme in melanogenesis, although tyrosinase was not inhibited directly. KHG26792 activated extracellular signal-regulated kinase (ERK), whereas an ERK pathway inhibitor, PD98059, rescued KHG26792-induced hypopigmentation. These results suggest that KHG26792 decreases melanin production via ERK activation. Moreover, the hypopigmentary effects of KHG26792 were confirmed in a pigmented skin equivalent model using Cervi cornus Colla (deer antler glue), in which the color of the pigmented artificial skin became lighter after treatment with KHG26792. In summary, our findings suggest that KHG26792 is a novel skin whitening agent.
Animals
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Antlers
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Cornus
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Hypopigmentation
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MAP Kinase Signaling System
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Melanins*
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Microphthalmia-Associated Transcription Factor
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Monophenol Monooxygenase
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Phosphotransferases
;
Skin Lightening Preparations
;
Skin*
;
Skin, Artificial
6.Impact of Cigarette Smoking: a 3-Year Clinical Outcome of Vasospastic Angina Patients.
Byoung Geol CHOI ; Seung Woon RHA ; Taeshik PARK ; Se Yeon CHOI ; Jae Kyeong BYUN ; Min Suk SHIM ; Shaopeng XU ; Hu LI ; Sang Ho PARK ; Ji Young PARK ; Woong Gil CHOI ; Yun Hyeong CHO ; Sunki LEE ; Jin Oh NA ; Cheol Ung CHOI ; Hong Euy LIM ; Jin Won KIM ; Eung Ju KIM ; Chang Gyu PARK ; Hong Seog SEO ; Dong Joo OH
Korean Circulation Journal 2016;46(5):632-638
BACKGROUND AND OBJECTIVES: Cigarette smoking is a risk significant factor in coronary artery disease (CAD) and vasospastic angina (VSA). However, it is largely unknown whether smoking adds to any long-term clinical risk in VSA patients. SUBJECTS AND METHODS: A total of 2797 patients without significant CAD underwent acetylcholine (Ach) provocation test between November 2004 and October 2010. Patients were divided into three groups, based on the presence of coronary artery spasm (CAS) and smoking habits (non-CAS group: n=1188, non-smoking CAS group: n=1214, smoking CAS group: n=395). All CAS patients were prescribed with anti-anginal medications for at least 6 months. The incidence of major clinical outcomes and recurrent angina of these groups were compared up to 3 years. RESULTS: There were considerable differences in the baseline clinical and angiographic characteristics among the three groups, but there was no difference in the endpoints among the three groups (including individual and composite hard endpoints) such as death, myocardial infarction, de novo percutaneous coronary intervention, cerebrovascular accident, and major adverse cardiac events. However, there was a higher incidence of recurrent angina in both the non-smoking CAS group and smoking CAS group, as compared to the non-CAS group. In multivariable adjusted Cox-proportional hazards regression analysis, smoking CAS group exhibited a higher incidence of recurrent angina compared with the non-CAS group (hazard ratio [HR]; 2.46, 95% confidence interval [CI]; 1.46-4.14, p=0.001) and non-smoking CAS group (HR; 1.76, 95% CI; 1.08-2.87, p=0.021). CONCLUSION: Cigarette smoking CAS group exhibited higher incidence of recurrent angina during the 3-year clinical follow-up compared with both the non-CAS group and non-smoking CAS group. Quitting of smoking, paired with intensive medical therapy and close clinical follow-up, can help to prevent recurrent angina.
Acetylcholine
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Coronary Artery Disease
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Coronary Vessels
;
Follow-Up Studies
;
Humans
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Incidence
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Myocardial Infarction
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Percutaneous Coronary Intervention
;
Smoke
;
Smoking*
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Spasm
;
Stroke
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Tobacco Products*