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Graphiumins I and J, New Thiodiketopiperazines from the Marine-derived Fungus Graphium sp. OPMF00224
Takashi Fukuda,Kenichiro Nagai,Yuko Kurihara,Akihiko Kanamoto,Hiroshi Tomoda 한국생약학회 2015 Natural Product Sciences Vol.21 No.4
Two new thiodiketopiperazines (TDKPs), designated graphiumins I (1) and J (2), were isolated from the culture broth of the marine-derived fungus Graphium sp. OPMF00224 by solvent extraction, silica gel column chromatography, and HPLC. Their absolute structures were elucidated by spectroscopic analyses (1D and 2D NMR data, ROESY correlations, and CD data) and chemical methods. They were found to be structurally rare TDKPs with a phenylalanine-derived indolin substructure. Compounds 1 and 2 inhibited yellow pigment production by methicillin-resistant Staphylococcus aureus (MRSA) with IC50 values of 63.5 and 76.5 mg/ml, respectively, without inhibiting its growth, even at 250 mg/ml.
Takuya Misugi,Takashi Juri,Koichi Suehiro,Kohei Kitada,Yasushi Kurihara,Mie Tahara,Akihiro Hamuro,Akemi Nakano,Masayasu Koyama,Takasi Mori,Daisuke Tachibana 대한산부인과학회 2022 Obstetrics & Gynecology Science Vol.65 No.4
ObjectiveThis study aimed to investigate the accuracy and precision of continuous, non-invasive blood pressure obtained usingthe ClearSight system by comparing it with invasive arterial blood pressure, and to assess the hemodynamic changesusing invasive methods and the ClearSight system in patients undergoing cesarean section. MethodsArterial pressure was measured invasively with an intra-arterial catheter and non-invasively using the ClearSightsystem during cesarean section in patients with placenta previa or placenta accreta. Blood pressure measurementsobtained using these two means were then compared. ResultsTotal 1,277 blood pressure measurement pairs were collected from 21 patients. Under Bland-Altman analysis, theClearSight system demonstrated an acceptable accuracy with a bias and standard deviation of 8.8±13.4 mmHg forsystolic blood pressure, -6.3±7.1 mmHg for diastolic blood pressure, and -2.7±8.0 mmHg for median blood pressure. Cardiac index levels were significantly elevated during fetal delivery and 5 minutes after placental removal, andsystemic vascular resistance index levels were significantly decreased during fetal delivery and 40 minutes afterplacental removal. ConclusionIn patients undergoing cesarean section, the ClearSight system showed excellent accuracy and precision compared tothat of the currently used invasive monitoring system. 영어