1.Acute Stroke Associated With Combined Protein C and S Deficiency During Pregnancy.
Min Ji KIM ; San JUNG ; Bo Hee KIM ; Chae Young LEE ; Hak Ju OH ; Si Won EUM ; Eun Joo LEE ; Seok Beom KWON ; Soo Jin CHO ; Sung Hee HWANG
Journal of the Korean Neurological Association 2014;32(3):171-174
Pregnancy related stroke is rare and poorly understood. A 28-year-old pregnant woman at 20 weeks of gestation presented with sudden headache and left homonymous hemianopsia. MRI revealed acute right posterior cerebral artery territory infarction. Laboratory data revealed combined protein C and S deficiencies. Coagulation profiles returned to normal 6 months after the delivery. Although stroke can occur either with protein C or S deficiency, acute cerebral infarction associated with combined protein C and S deficiencies during gestation is very rare.
Adult
;
Cerebral Infarction
;
Female
;
Headache
;
Hemianopsia
;
Humans
;
Infarction
;
Magnetic Resonance Imaging
;
Posterior Cerebral Artery
;
Pregnancy*
;
Pregnant Women
;
Protein C*
;
Protein S
;
Stroke*
2.Reversible Encephalopathy Caused by Reactive Hypereosinophilia due to Toxocariasis.
Mi Ri KANG ; Sun Young IM ; Si Won EUM ; Jong Seok BAE ; Woo Kyung KIM ; Hong Ki SONG ; Ju Hun LEE
Journal of the Korean Neurological Association 2014;32(4):317-319
A 69-year-old male admitted to the psychological department due to delusion. One week later, he developed pneumonia and deep drowsy mental status. Despite improvement of pneumonia, his mental status got worse and he was referred to neurological department. The complete blood count tests showed repeated hypereosinophilia. The serologic tests revealed toxocariasis. He was treated with steroid and albendazole and his mental state rapidly improved. Toxocariasis is a common cause of reactive hypereosinophilia, which may be an underestimated etiology of reversible encephalopathy.
Aged
;
Albendazole
;
Blood Cell Count
;
Delusions
;
Humans
;
Male
;
Pneumonia
;
Serologic Tests
;
Toxocariasis*
3.Neuraminidase Inhibitors from the Fruiting Body of Glaziella splendens
Ji Yul KIM ; E Eum WOO ; Lee Su HA ; Dae Won KI ; In Kyoung LEE ; Bong Sik YUN
Mycobiology 2019;47(2):256-260
Neuraminidase (NA) cleaves the glycosidic bond linkages of sialic acids to release the mature virions from infected cells and has been an attractive therapeutic target for anti-influenza agents. In our ongoing investigation of NA inhibitors in mushroom extracts, we found that the extract the fruiting body of Glaziella splendens potently inhibited neuraminidase. The fruiting bodies of G. splendens were extracted and partitioned successively with hexane, ethyl acetate, and butanol. The ethyl acetate soluble-layer was subjected to silica gel and Sephadex LH-20 column chromatographies, and MPLC to obtain five compounds (1–5). Their structures were determined by spectroscopic methods. NA inhibitory activity of these compounds was evaluated using NAs from recombinant rvH1N1, H3N2, and H5N1 influenza A viruses. One compound (1) was elucidated as a new azaphilone derivative, and four compounds (2–5) were identified as entonaemin A, comazaphilone D, rubiginosin A, and entonaemin B, respectively. Compounds 3 and 4 showed considerable inhibitory activity against three types of neuraminidases with the IC₅₀ values of 30.9, 41.8, and 35.7 µM for 3 and 46.5, 50.4, and 29.9 µM for 4, respectively. This study reveals that the fruiting bodies of G. splendens possess azaphilone derivatives with the NA inhibitory activity. This is the first report on the isolation of neuraminidase inhibitors from the fruiting bodies of G. splendens.
Agaricales
;
Chromatography
;
Fruit
;
Influenza A virus
;
N-Acetylneuraminic Acid
;
Neuraminidase
;
Sialic Acids
;
Silica Gel
;
Virion
4.Consoramides A–C, New Zwitterionic Alkaloids from the Fungus Irpex consors
Ji-Yul KIM ; Dae-Won KI ; Yoon-Ju LEE ; Lee Su HA ; E-Eum WOO ; In-Kyoung LEE ; Bong-Sik YUN
Mycobiology 2021;49(4):434-437
In our ongoing search for new secondary metabolites from fungi, a basidiomycete fungus Irpex consors was selected for mycochemical investigation, and three new zwitterionic alkaloids (1-3) and five known compounds (4-8) were isolated from the culture broth (16 l) of I. consors. The culture filtrate was fractionated by a series of column chromatography including Diaion HP-20, silica gel, and Sephadex LH-20, Sep-Pak C18 cartridge, medium pressure liquid chromatography (MPLC), and high pressure liquid chromatography (HPLC) to yield eight compounds (1-8). The structures of the isolated compounds were elucidated by the interpretation of nuclear magnetic resonance (NMR) spectra and high-resolution mass spectrometry (HR-MS). Their antioxidant and antibacterial activities were examined. The zwitterionic structures of three new sesquiterpene alkaloids (1-3) were determined together with five known compounds identified as stereumamide E (4), stereumamide G (5), stereumamide H (6), stereumamide D (7), and sterostrein H (8). This is the first report of the zwitterionic alkaloids in the culture broth of I. consors. Three new zwitterionic alkaloids were named as consoramides A–C (1-3).
5.Consoramides A–C, New Zwitterionic Alkaloids from the Fungus Irpex consors
Ji-Yul KIM ; Dae-Won KI ; Yoon-Ju LEE ; Lee Su HA ; E-Eum WOO ; In-Kyoung LEE ; Bong-Sik YUN
Mycobiology 2021;49(4):434-437
In our ongoing search for new secondary metabolites from fungi, a basidiomycete fungus Irpex consors was selected for mycochemical investigation, and three new zwitterionic alkaloids (1-3) and five known compounds (4-8) were isolated from the culture broth (16 l) of I. consors. The culture filtrate was fractionated by a series of column chromatography including Diaion HP-20, silica gel, and Sephadex LH-20, Sep-Pak C18 cartridge, medium pressure liquid chromatography (MPLC), and high pressure liquid chromatography (HPLC) to yield eight compounds (1-8). The structures of the isolated compounds were elucidated by the interpretation of nuclear magnetic resonance (NMR) spectra and high-resolution mass spectrometry (HR-MS). Their antioxidant and antibacterial activities were examined. The zwitterionic structures of three new sesquiterpene alkaloids (1-3) were determined together with five known compounds identified as stereumamide E (4), stereumamide G (5), stereumamide H (6), stereumamide D (7), and sterostrein H (8). This is the first report of the zwitterionic alkaloids in the culture broth of I. consors. Three new zwitterionic alkaloids were named as consoramides A–C (1-3).