• Mass Spectrometry Letters
• /
• 제7권1호
• /
• pp.12-15
• /
• 2016

Results of free and bound myo-inositol in infant formula (IF) are presented. Inositol was analyzed by HILIC ultra-performance liquid chromatography coupled with mass spectrometer. The levels of free myo-inositol in 27 Australian and 4 EU originated IF samples were 300-600 mg/kg of powder or 1.6-3.1 mg/100 kJ. The amount of bound inositol in lipid fraction of IF was, on average, 10% of free myo-inositol.

• 미생물학회지
• /
• 제12권2호
• /
• pp.85-93
• /
• 1974

Four stereoisomers of inositol p-aminosalicylate, that is hexaris-O-(p-aminosalicylyl)-myo-inositol, hexaris-O-(p-aminosalicylyl)-muco-inositol were synthesized by p-aminosalicylyl chloride with myo-, epi-, scyllo-, and muco-inositol respectively. Their antibacterial activity was tested against human type tubercle bacilli $H_{37}$/Rv, in contrast to 1.25.gamma./ml of p-aminosalicylic acid used as control. Hexaris-O-(p-aminoslicylyl)-muco-inositol showed the strongest antibacterial action at 0.625.gamma./ml, the other compounds more or less active than p-aminosalicylic acid.

• 식품산업과 영양
• /
• 제9권1호
• /
• pp.28-35
• /
• 2004

피니톨(pinitol, 3-O-methyl-chiro-inositol, PI)은 콩류나 솔잎 등에 포함되어 있는 천연 혈당강하 성분으로서 myo-inositol(MI)의 구조이성체인 chiro-inositol(CI)의 3번 탄소에 methyl기가 붙은 ether 화합물이다(Fig. 1). 1990년대 초 미국의 Virginia대 학 연구진들은 일반인들과는 달리 당뇨병 환자들의 소변에는 chiro-inositol의 함량이 현저히 낮다는 사실을 발견하고 chiro-inositol이 인체 내에서 혈중포도당 대사에 어떻게 관여하는지 밝혀내었다(1,2). (중략)

• 한국수정란이식학회지
• /
• 제16권2호
• /
• pp.91-98
• /
• 2001

본 연구는 phosphatidylinositol 대사의 기질 및 억제물질이 돼지 난모세포의 체외 성숙·수정에 미치는 영향에 대하여 실험을 하였다. 난모세를 inositol (250 mM) 첨가 또는 무첨가한 mTLP-PVA 배양액에서 46시간 체외배양하였다. 성숙이 완료된 난모세포는 신선 돼지정액을 이용하여 6시간 동안 mTALP-PVA 배양액에서 체외수정을 시켰다. 수정 후 6시간에 이들 난모세포를 10% 혈청을 첨가한 TCM-199 배양액에서 추가로 12시간 배양하였다. 제 2성숙분열중기로 성숙한 남모세포의 비율은 대조구 (67.3%)에 비하여 inositol (81.4%)을 첨가하여 46시간 체외성숙시킨 난모세포에서 더 높았다 (P<0.05). 체외수정 후 18시간에 웅성전핵 형성율은 대조구의 27.3%보다 inositol (42.0%)을 첨가한 배지에서 성숙시킨 난모세포에서 더 높게 나타났다 (P<0.05). 난모세포의 성숙에 대한 inositol의 작용을 조사하기 위하여 LiCl (10 mM) 또는 dbcAMP (0.5 mM)를 첨가한 배지에서 난모세포를 배양하였을 때, 이들 두 약제는 난모세포의 성숙을 억제하였다 (P<0.05). 그러나 이 두 약제의 억제작용은 inositol 첨가에 의해 해제되어 대조구 수준까지 성숙율이 개선되었다. DbcAMP와 verapamil은 상승작용을 하여 난모세포의 성숙을 억제하였다. Verapamil을 단독으로 첨가하였을 때, 난모세포의 성숙분열 개시에는 영향이 없었으나 제 2성숙분열중기로의 성숙은 억제되었다. 이상의 결과로부터, inositol 첨가에 의해 PI-Cycle이 활성화되어 간모세포의 핵 및 세포질 성숙과 막의 변화가 유도되어 난모세포의 성숙이 inositol 첨가에 의해 개선되었다는 것이 시사되었다.

• Molecules and Cells
• /
• 제40권5호
• /
• pp.315-321
• /
• 2017

The inositol polyphosphates are a group of multifunctional signaling metabolites whose synthesis is catalyzed by a family of inositol kinases that are evolutionarily conserved from yeast to humans. Inositol polyphosphate multikinase (IPMK) was first identified as a subunit of the arginine-responsive transcription complex in budding yeast. In addition to its role in the production of inositol tetrakis- and pentakisphosphates ($IP_4$ and $IP_5$), IPMK also exhibits phosphatidylinositol 3-kinase (PI3-kinase) activity. Through its PI3-kinase activity, IPMK activates Akt/PKB and its downstream signaling pathways. IPMK also regulates several protein targets non-catalytically via protein-protein interactions. These non-catalytic targets include cytosolic signaling factors and transcription factors in the nucleus. In this review, we highlight the many known functions of mammalian IPMK in controlling cellular signaling networks and discuss future challenges related to clarifying the unknown roles IPMK plays in physiology and disease.

• 대한화장품학회지
• /
• 제30권4호
• /
• pp.515-524
• /
• 2004

쌀눈에서 추출한 inositol과 phytic acid를 화장품에 적용하기 위해 피부에 미치는 영향에 대해 연구하였다 $20{\~}40$대의 아시안 여성 45명을 대상으로 7주간 inositol $0{\~}3.0\;wt\%$와 phytic acid $0{\~}1.50\;wt%$가 함유된 스킨로션을 제조, 사용 후 피부의 수분, 유분, 탄력, 주름에 미치는 영향에 대해서 알아보았다 Inositol $1.0\;wt\%가$ 함유된 스킨로션을 사용한 경우 피부의 수분 함유량은 $19\%$ 증가하였으며, 주름은 $12.4\%$ 개선되었고, 피부탄력은 $12.4\%$ 증가되었다. 또한 phytic acid $0.50\;wt\%$를 함유한 스킨 로션을 사용한 경우 피부의 수분은 $71.6\%$ 증가하였으며, 주름은 $16.9\%$ 감소하였고, 탄력은 $21.9\%$가 증가하였다. Inositol과 phytic acid를 지성과 건성피부에 적용한 결과 $2{\~}4$주 후면 정상피부의 유분량으로 조절됨을 알 수 있었다 Inositol과 phytic acid는 모두 피부개선에 효과적이나, phytic acid는 민감한 피부에는 적용하기 어려운 점이 있다. 따라서 $1.0\;wt\%의$ inositol에 $0{\~}0.5\;wt\%$의 phytic acid를 첨가한 스킨로션을 제조하여 그 효과에 대해서 알아보았다. 이 경우 $1.0\;wt\%$의 phytic acid에 $1.0\;wt\%$의 inositol을 사용한 경우 수분은 $63.8\%$, 탄력은$17.2\%$ 증가하였으며, 주름은 $17.4\%$ 개선되었고, 피부 유분량은 약 2주 후에 정상적인 상태로 개선됨을 알 수 있었다. 따라서 inositol $1.0\;wt\%$에 $0.10\;wt\%$의 phytic acid를 첨가하여도 피부 개선효과가 나타남을 알 수 있다. 본 연구의 결과 내에서 $1.0\;wt\%$의 phytic acid와 $1.0\;wt\%$의 inositol을 사용한 경우 적은 양으로도 피부 개선 효과가 우수한 상승효과가 나타남을 알 수 있었다.

• 대한지역사회영양학회:학술대회논문집
• /
• 대한지역사회영양학회 1998년도 춘계학술대회:경제위기시대의 합리적인 식생활
• /
• pp.81-81
• /
• 1998

• 대한화장품학회:학술대회논문집
• /
• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book II
• /
• pp.253-267
• /
• 2003

Inositol and phytic acic extracted from rice bran were investigated for applying cosmetics. Skin lotions containing 0∼3.0wt% inositol and 0∼1.5wt% phytic acid were applied respectively, to the arm skins of 45 Asian women 20'-40's for 7 weeks. Improvement on moisture was evaluated. In addition, improvements on sebum, elasticity, and wrinkle were examined after applying placebo, Inositol and phytic acid-containing skin lotions for face, respectively. For 1.0 wt% inositol resulted in 19% increase of moisture. The wrinkle reduction and elasticity improved 12.4% and 17.0% on average, respectively. Applying 0.5wt% phytic acid resulted in 71.6% increase the moisture. Improvements on wrinkle and elasticity were 15.9% and 21.9% respectively. Applying inositol or phytic acid regardless of dry or oily, resulted in sebum value recovery to that of the normal skin after 2- 4 weeks. Inositol is inferior to phytic acid in improvenients of the skin, and phytic acid is not suitable to sensitive skin. So 0-0.5wt% of phytic acid were added to 1.0wt% inositol and similar experiments were carried out. In case of added 0.1wt% phytic acid, moisture increased 63.8% approximately. Improvements on elasticity and reduction on wrinkle were 17.2% and 17.4%, respectively. Both skin types were turned to normal skin type after 2 weeks. It could improve the skin condition when used inositol added phytic acid. The optimized concentration of phytic acid was 0.10wt% with 1.0wt% of inositol for synergic effect.

• 한국수정란이식학회지
• /
• 제22권4호
• /
• pp.223-227
• /
• 2007

This study was carried out to investigate the effect of morphology of oocytes, kinds of media, cysteine and myo-inositol supplementation on IVM rate of porcine oocytes. Cumulus- enclosed oocytes were incubated in maturation NCSU-23 and TCM-199 medium with supplementation with 3, 5, 10, 20 mM myo-inositol and 0.05, 0.1, 0.5, 1.0 mM cysteine. 1. When classified by morphology, excellent, good and fair of cumulus-enclosed oocytes were incubated for 48 hrs and the IVM rate were $14.2{\pm}3.7%{\sim}58.7{\pm}4.0%$, respectively. The rate were greater in oocytes with excellent cumulus cells than those without cumulus cells. 2. The IVM rate of oocytes cultured in TCM-199 and NCSU- 23 medium supplementation or non-supplementation with 1.0 mM myo-inositol were $7.5{\pm}4.5%,\;45.0{\pm}4.8%\;and\;4.4%,\;42.5{\pm}4.2%,\;18.0{\pm}5.2%$, respectively. Supplementation with myo-inositol significantly increased the IVM rate of oocytes. 3. The IVM rate of oocytes cultured in NCSU-23 medium supplementation of 3, 5, 10, 20 mM myo-inositol for 48 hrs were $47.5{\pm}4.5%,\;57.5{\pm}4.2%,\;62.5{\pm}4.9%,\;50.0{\pm}5.2%$, respectively. The IVM rate of oocytes in NCSU-23 medium supplemented with 10 mM myo-inositol were significantly increased compared to control ($42.5{\pm}4.0%$). 4. The IVM rate of oocytes cultured for 48 hrs in NCSU-23 media supplement with 0.3, 0.5, 1.0, 2.0 mM myo-inositol were $50.0{\pm}4.5%,\;62.5{\pm}4.2%,\;52.5{\pm}4.9%,\;45.0{\pm}4.2%$, respectively. The IVM rate of oocytes in NCSU-23 medium supplemented with 10 mM cysteine were significantly increased compared to control ($42.5{\pm}4.0%$).

• 한국미생물·생명공학회지
• /
• 제24권4호
• /
• pp.485-492
• /
• 1996

myo-Inositol, a growth factor for Saccharomyces cerevisiae (S. cerevisiae), has been known to be incorporated into phosphatidylinositol (PI), which is a kind of phospholipid in the cell membrane, by a membrane-associated PI-synthesizing enzyme. The deficiency of myo-inositol in S. cerevisiae adversely affected the membrane structure and function. On the basis of biochemical functions of myo-inositol, the effect of deficiency of myo-inositol on the aerobic glucose metabolism was investigated by measuring specific oxygen uptake rate (Q$_{O2}$) used as an indicator representing the respiratory capacity of S. cerevisiae in batch and continuous cultures. The respiratory capacity of aerobic glucose metabolism in S. cerevisiae was also monitored after glucose pulse-addition in a continuous culture (D=0.2, 1/hr), in which glucose was utilized through respiratory metabolism. The deficiency of myo-inositol was found to lead to both the decrease of the maximum specific oxygen uptake rate (Q$_{O2max}$) observed from the batch as well as in the continuous culture experiment and the decrease of the respiratory capacity of aerobic glucose metabolism of S. cerevisiae determined from the glucose pulse-addition experiment, in which the glucose flux into respiratory and fermen- tative metabolism was quantitatively analyzed.