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Repellent Efficacy of Caraway and Grapefruit Oils for Sitophilus oryzae (Coleoptera: Curculionidae)
Yoon, Chang-Mann,Kang, Shin-Ho,Jang, Sun-Ah,Kim, Young-Jae,Kim, Gil-Hah Korean Society of Applied Entomology 2007 Journal of Asia-Pacific Entomology Vol.10 No.3
This study examined the repellent efficacy of six essential oils extracted from caraway, clary sage, grapefruit, strawberry, thyme white, ylangylang, and their related volatile constituents against the adult rice weevil, Sitophilus oryzae using an olfactometer. The caraway and grapefruit oil showed the highest repellent efficacy against the rice weevil at a dose of $10{\mu}{\ell}$. Gas Chromatography-Mass Spectrophotometer analysis revealed caraway oil to be rich in carvone and limonene, and grapefruit oil to be rich in limonene, ${\beta}-myrcene\;and\;{\alpha}-pinene$. When the monoterpene was mixed in equal parts with the caraway and grapefruit essential oils, carvone with limonene in caraway oil demonstrated the highest repellent efficacy (96.7%). Limonene with ${\alpha}-pinene\;and\;{\beta}-myrcene$ in grapefruit showed strong repellent efficacy (86.4%) with synergistic effects on the S. oryzae. A mixture of caraway and grapefruit oils, as well as carvone and limonene, can be potent repellents that may be useful for controlling S. oryzae.
Yoon, Chang-Mann,Indiragandhi, Pandiyan,Anandham, Rangasamy,Cho, Soo-Won,Sa, Tong-Min,Kim, Gil-Hah The Korean Society for Applied Biological Chemistr 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.4
Investigations of the diversity of bacteria in acaricide resistant and susceptible populations from the whole mite extracts of twospotted spider mite-Tetranychus urticae were made using 8 different bacterial growth media and identified through 16S rRNA gene sequence analysis. The pyridaben resistant population was diversified with six genera including Chryseobacterium, Sphingomonas, Acidovorax, Herbaspirillum, Janthinobacterium, and Xenophilus, whereas the acequinocyl resistant population was associated with Bacillus, Pasteurella, Staphylococcus, Enterobacter, and Pseudomonas. The fenpropathrin resistant population harbored only two phylotypes (Pantoea and Pseudomonas). Citrobacter, Enterobacter, and Pantoea were recovered from the susceptible population. No correlation was observed between bacterial density and bacterial diversity. Of the 8 different growth media, R2A supported a greater number of cultivable bacterial phylotypes followed by Luria Bertani and brain heart infusion agar. This study suggests that knowledge of the diversity of bacterial phylotypes present in host insect pest species may be useful for developing biological approaches in insect-microbe interaction.
( Chang Mann Yoon ),( Pandiyan Indiragandhi ),( Rangasamy Anandham ),( Soo Won Cho ),( Tong Min Sa ),( Gil Hah Kim ) 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.4
Investigations of the diversity of bacteria in acaricide resistant and susceptible populations from the whole mite extracts of twospotted spider mite-Tetranychus urticae were made using 8 different bacterial growth media and identified through 16S rRNA gene sequence analysis. The pyridaben resistant population was diversified with six genera including Chryseobacterium, Sphingomonas, Acidovorax, Herbaspirillum, Janthinobacterium, and Xenophilus, whereas the acequinocyl resistant population was associated with Bacillus, Pasteurella, Staphylococcus, Enterobacter, and Pseudomonas. The fenpropathrin resistant population harbored only two phylotypes (Pantoea and Pseudomonas). Citrobacter, Enterobacter, and Pantoea were recovered from the susceptible population. No correlation was observed between bacterial density and bacterial diversity. Of the 8 different growth media, R2A supported a greater number of cultivable bacterial phylotypes followed by Luria Bertani and brain heart infusion agar. This study suggests that knowledge of the diversity of bacterial phylotypes present in host insect pest species may be useful for developing biological approaches in insect-microbe interaction.
Chang Mann Yoon,Pandiyan Indiragandhi,Rangasamy Anandham,Soo Won Cho,Tong Min Sa,Gil Hah Kim 한국응용생명화학회 2010 Journal of Applied Biological Chemistry (J. Appl. Vol.53 No.4
Investigations of the diversity of bacteria in acaricide resistant and susceptible populations from the whole mite extracts of twospotted spider mite-Tetranychus urticae were made using 8 different bacterial growth media and identified through 16S rRNA gen
Yoon, Seok-Mann,Shim, Jai-Joon,Kim, Sung-Ho,Chang, Jae-Chil The Korean Neurosurgical Society 2012 Journal of Korean neurosurgical society Vol.51 No.3
The treatment of bilateral vertebral artery dissecting aneurysms (VADAs) presenting with subarachnoid hemorrhage (SAH) is still challenging. The authors report a rare case of bilateral VADA treated with coil trapping of ruptured VADA and covered stents implantation after multiple unsuccessful stent assisted coiling of the contralateral unruptured VADA. A 44-year-old woman was admitted to our hospital because of severe headache and sudden stuporous consciousness. Brain CT showed thick SAH and intraventricular hemorrhage. Cerebral angiography demonstrated bilateral VADA. Based on the SAH pattern and aneurysm configurations, the right VADA was considered ruptured. This was trapped with endovascular coils without difficulty. One month later, the contralateral unruptured VADA was protected using a stent-within-a-stent technique, but marked enlargement of the left VADA was detected by 8-months follow-up angiography. Subsequently two times coil packing for pseudosacs resulted in near complete occlusion of left VADA. However, it continued to grow. Covered stents graft below the posterior inferior cerebellar artery (PICA) origin and a coronary stent implantation across the origin of the PICA resulted in near complete obliteration of the VADA. Covered stent graft can be used as a last therapeutic option for the management of VADA, which requires absolute preservation of VA flow.
Oral manifestation and root canal therapy of the patient with mucopolysaccharidosis
Yoon, Ji-Hye,Lee, Hyo-Il,Jang, Ji-Hyun,Choi, Sung-Hyeon,Chang, Hoon-Sang,Hwang, Yun-Chan,Hwang, In-Nam,Lee, Bin-Na,Oh, Won-Mann The Korean Academy of Conservative Dentistry 2019 Restorative Dentistry & Endodontics Vol.44 No.2
Mucopolysaccharidosis (MPS) is an inherited metabolic disorder caused by a deficiency in enzymes that participate in the degradation of glycosaminoglycans (GAGs) such as heparin sulfate and dermatan sulfate. Left untreated, patients show progressive mental and physical deterioration due to deposition of GAGs in organs. Death often occurs due to cardiac or respiratory failure before patients reach their early twenties. MPS has several oral and dental manifestations. An enlarged head, short neck, and open mouth associated with a large tongue are major characteristics of MPS patients. Dental complications can be severe, including unerupted dentition, dentigerous cyst-like follicles, malocclusions, condylar defects, and gingival hyperplasia. A 21-year-old female patient with MPS was described in this article, with special emphasis on oral manifestations and dental treatment.
Pandiyan Indiragandhi,Chang Mann Yoon,Jeong Oh Yang,Soo Won Cho,Tong Min Sa,Gil Hah Kim 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.5
Whiteflies are sap-sucking insects belonging to the hemipteran order. They are well known for their menace to agriculture, as pests and vectors, and are reported for their bacterial and Rickettsia association in B biotype. In the present investigation, cul
Kyung-Bong Yoon,Sung-Wan Ahn,Chang Mann Ko 대한생리학회-대한약리학회 2004 The Korean Journal of Physiology & Pharmacology Vol.8 No.2
Voltage-sensitive release mechanism was pharmacologically dissected from the Ca<SUP>2</SUP>-induced Ca<SUP>2</SUP> release in the SR Ca<SUP>2</SUP> release in the rat ventricular myocytes patch-clamped in a whole-cell mode. SR Ca<SUP>2</SUP> release process was monitored by using forward-mode Na<SUP></SUP>-Ca<SUP>2</SUP> exchange after restriction of the interactions between Ca<SUP>2</SUP> from SR and Na<SUP></SUP>-Ca<SUP>2</SUP> exchange within micro-domains with heavy cytosolic Ca<SUP>2</SUP> buffering with 10 mM BAPTA. During stimulation every 10 s with a pulse roughly mimicking action potential, the initial outward current gradually turned into a huge inward current of 12.9⁑0.5 pA/pF. From the inward current, two different inward I<SUB>NCX</SUB>s were identified. One was 10 μM ryanodine-sensitive, constituting 14.2⁑2.3%. It was completely blocked by CdCl<SUB>2</SUB> (0.1 mM and 0.5 mM) and by Na<SUP></SUP>-depletion. The other was identified by 5 mM NiCl<SUB>2</SUB> after suppression of I<SUB>CaL</SUB> and ryanodine receptor, constituting 14.8⁑1.6%. This latter was blocked by either 10 mM caffeine-induced SR Ca<SUP>2</SUP>-depletion or 1 mM tetracaine. IV-relationships illustrated that the latter was activated until the peak in 30∼35 mV lower voltages than the former. Overall, it was concluded that the SR Ca<SUP>2</SUP> release process in the rat ventricular myocytes is mediated by the voltage-sensitive release mechanism in addition to the Ca<SUP>2</SUP>-induced-Ca<SUP>2</SUP> release.