• Title/Summary/Keyword: membrane skeleton

Search Result 18, Processing Time 0.025 seconds

Up-regulation of Cyelin A-Cdk2 activity is associated with depolarization of mitochondrial membrane potential during apoptosis of human hepatoma SK-HEP1 cells induced by treatment with panaxadiol

  • Park, Byoung-Duck;Jin, Ying-Hua;Yim, Hyung-Shin;Lee, Seung-Ki
    • Proceedings of the PSK Conference
    • /
    • 2003.10b
    • /
    • pp.167.1-167.1
    • /
    • 2003
  • Here we show that panaxadiol, a ginseng saponin with a dammarane skeleton, induces acute apoptotic cell death in human hepatoma SK-HEP-1 cells as evidenced by analysis of DNA fragmentation, caspase activation, and changes in cell morphology. The kinetic study showed that panaxadiol-induced apoptosis is associated with depolarization of mitochondrial membrane potential and cytochrome c release. Sequential activations of caspases-depolarization of mitochondrial membrane potential and cytochrome c release. Sequential activations of caspases-9, and -3, or -7, but not of caspase 8 coincide well in a time dependent manner with mitochondrial membrane depolarization and cytochrome c release from mitochondria during apoptosis of SK-HEP-1 cells induced by treatment with panaxadiol. (omitted)

  • PDF

Influence of Total Saponin from Korean Red Ginseng on Structural Changes in Phospholipid Membranes and Ghost Erythrocytes (고려홍삼의 총사포닌에 의한 인지질막과 적혈구막의 구조적 변화)

  • Kim, Yuri-A.;Vlasimir, R.Akoev;Tarahovsky, Yuri-S.;Ruslan, Elemesov;Park, Kyeong-Mee;Song, Yong-Bum;Rhee, Man-Hee;Park, Hwa-Jin
    • Journal of Ginseng Research
    • /
    • v.19 no.1
    • /
    • pp.39-44
    • /
    • 1995
  • Total saponin from Korean red ginseng changed thermodynamic parameters of membranes from dipalmitoylphosphatidylcholine (DPPC) and ghost erythrocytes of human. In liposomes from DPPC, temperature of the main transition (Lb'-La) in liquid-crystalline phase increases by 0.2$^{\circ}C$ in average, but enthalpy does not change. Total saponin at a concentration of smaller than $10^5$% "stabilizes" the timid bilayers. At larger than 0.07 of saponin/DPPC ratio, saponin leads to an exclusion of the bound lipid molecules from the main phase transition into lamella liquid crystalline La-phase. Total saponin influences specifically all erythrocyte membrane transitions in a concentration-dependent manner, i.e. on the structures of all the main membrane skeleton proteins. A high structural specificity of saponin with membrane proteins, could be a base of specificity of physiological response of not only erythrocytes, but also other cells.her cells.

  • PDF

Ultrasonographic Appearance of the Gestational Structures Throughout Pregnancy in Shih-tzu bitches I. Time of Initial Detection of the Fetal and Extra-fetal Structures (Shih-tzu견에서 임신일령에 따른 임신구조물의 초음파상 I. 태아 및 태아외구조물의 최초 관찰시기)

  • 고진성;김방실;이순애;조양택;김재풍;오기석;김성호;김종택;박인철
    • Journal of Veterinary Clinics
    • /
    • v.21 no.1
    • /
    • pp.29-34
    • /
    • 2004
  • Serial ultrasonographic examinations were daily performed on 12 Shih-tzu bitches from 15 days after ovulation until parturition to determine the time of first detection and ultrasonographic appearance of the fetal and extra-fetal structures and to determine the size of gestational structures. Gestational age was timed from the day of ovulation (day 0), which was estimated to occur when plasma progesterone concentration was first increased above 4.0 ng/ml. The gestational length in 12 Shih-tzu bitches was 62.1 (range:60-64) days. The initial detection of the fetal and extra-fetal structures were: gestational sac at days 19.2 (16-21); zonary placenta in the uterine wall at days 25.9 (24-28); yolk sac membrane at days 24.1 (22-26); amniotic membrane at days 26.6 (24-28); embryo initial detection at days 22.3 (21-24); heartbeat at days 23.8 (23-25); limb buds at days 29.3 (27-31); fetal movement at days 32.3 (31-34); stomach at days 32.6 (29-34); urinary bladder at days 33.1 (29-35); skeleton at days 35.9 (34-38) and kidney at days 45.8 (45-48).

Osteochondroma and synovial chondromatosis of the temporomandibular joint (측두하악관절에서 발생한 골연골종과 활액막 연골종증)

  • Kim Sung-Eun;Kim Jae-Duk
    • Imaging Science in Dentistry
    • /
    • v.32 no.1
    • /
    • pp.41-47
    • /
    • 2002
  • Osteochondroma is a benign lesion of osseous and cartilagenous origin. It is a relatively common benign tumor of the skeleton, occurring most often in the metaphyseal region of long bone. However, it is rare in the facial bones. Reported foci in the mandible were the condyle, coronoid process, and symphysis region. Synovial chondromatosis is an uncommon benign condition of unknown etiology which affects the articular joints. Foci of cartilage develop through metaplasia in the underlying connective tissue of the synovial membrane. These cartilagenous foci and fragments may undergo calcification and ossification. We experienced 4 patients with abnormal appearance of mandibular condyle. This report describes 3 cases of osteocondroma and 1 case of synovial chondromatosis of the mandibular condyle with review of the literature.

  • PDF

Synovial chondromatosis and osteochondroma in TMJ with CBCT images (측두하악관절에 발생한 활액연골종증과 골연골종의 CBCT 영상)

  • Seo, Yo-Seob;Lee, Gun-Sun;Kim, Jin-Soo;Kim, Jae-Duk
    • Imaging Science in Dentistry
    • /
    • v.40 no.1
    • /
    • pp.45-52
    • /
    • 2010
  • Synovial chondromatosis is an uncommon disorder characterized by metaplastic formation of multiple cartilaginous and osteocartilaginous nodules within connective tissue of the synovial membrane of joints. Osteochondroma is a benign lesion of osseous and cartilagenous origin. It is frequently found in the general skeleton, but is rare in the mandibular condyle. We experienced 2 patients with abnormal appearance of temporomandibular joint. Histologic diagnoses were not obtained, because surgery was unwarranted in view of the lack of symptoms and the benign differential diagnosis. We describes 2 cases that show the characteristics of both disease simultaneously.

Subglottic transection of larynx with right pneumothorax One case Report (외상후 발생한 성문하후두의 완전절단 치험 1례)

  • 김학제
    • Journal of Chest Surgery
    • /
    • v.18 no.4
    • /
    • pp.812-816
    • /
    • 1985
  • In the past several years the popularity of the motor cycle has produced an increasing incidence of the injuries to the larynx and trachea. Most of all on accidents come to death and survivors to the hospital are rare. Early diagnosis and to keep air way are necessary to initiate proper treatment in injury of upper air way. Meticulous apposition of mucous membrane and reconstitution of laryngeal skeleton are important. We experienced a rare case of 26 year old men with cricothyroidal transection after trauma. On Oct. 17, 1985, the patient struck his neck on baggage frame of truck when dropping from his motor cycle on sudden stop. Emergency tracheal intubation on distal segment of trachea was accomplished by otolaryngologist in a local clinic. He was transferred to our hospital. Exploration 2 hours later revealed complete separation of cricoid cartilage from thyroid cartilage. The recurrent laryngeal nerve could not be identified. Anastomosis of thyroid and cricoid was accomplished and Portex endotracheal tube was inserted as splint for 10 days. No stenosis developed. The air way appeared adequate for moderate physical activity though paramedian fixation of vocal cord paralysis. Postoperative follow-up course has been good after he discharged on POD 14 days.

  • PDF

Ultrasonographic appearance of the gestational structures throughout accurately timed pregnancy in Korea Jin-do dogs I. Time of initial detection of the fetal and extra-fetal structures (진도개에서 임신일령에 따른 임신구조물의 초음파상 I. 태아 및 태아외구조물의 최초 관찰시기)

  • Kang, Byong-kyu;Son, Chang-ho;Shin, Chang-rok;Choi, Han-sun;Oh, Ki-seok;Park, In-cheul
    • Korean Journal of Veterinary Research
    • /
    • v.36 no.1
    • /
    • pp.235-245
    • /
    • 1996
  • Serial ultrasonographic examinations were performed on 9 pregnant Korea Jin-do bitches that were the Korean native breed, from days 15 to 60 pregnancy to determine the time of first detection and ultrasonographic appearance of the fetal and extra-fetal structures of pregnancy. Gestational age was timed from the day of ovulation (Day 0), which was estimated to occur when plasma progesterone concentration was first increased above 4.0 ng/ml. Gestational ages at earliest detection of the following fetal and extra-fetal structures were; gestational sac at days 17 to 22; placental layers in the uterine wall at days 20 to 24; zonary placenta at days 25 to 28; yolk sac membrane at days 22 to 24; amnionic membrane at days 27 to 29; embryo initial detection at days 21 to 23; fetal heartbeat at days 21 m 25; bipolar shape embryo at days 25 to 26; fetal movement at days 28 to 31; limb buds at days 31 to 35; anechoic area in head at days 31 to 36; stomach at days 34 to 37; urinary bladder at days 34 to 37; skeleton at days 36 to 38; dorsal sagittal tubular structure in vertebrae at days 36 to 38; lung hyperechoic vs liver at days 37 to 39; liver hypoechoic vs abdomen at days 37 to 40 and kidney at days 43 to 48, respectively.

  • PDF

Curcumin utilizes the anti-inflammatory response pathway to protect the intestine against bacterial invasion

  • Cho, Jin Ah;Park, Eunmi
    • Nutrition Research and Practice
    • /
    • v.9 no.2
    • /
    • pp.117-122
    • /
    • 2015
  • BACKGROUND/OBJECTIVES: Curcumin, a major component of the Curcuma species, contains antioxidant and anti-inflammatory properties. Although it was found to induce apoptosis in cancer cells, the functional role of curcumin as well as its molecular mechanism in anti-inflammatory response, particularly in intestinal cells, has been less investigated. The intestine epithelial barrier is the first barrier and the most important location for the substrate coming from the lumen of the gut. SUBJECTS/METHODS: We administered curcumin treatment in the human intestinal epithelial cell lines, T84 and Caco-2. We examined endoplasmic reticulum (ER) stress response by thapsigargin, qPCR of XBP1 and BiP, electrophysiology by wild-type cholera toxin in the cells. RESULTS: In this study, we showed that curcumin treatment reduces ER stress and thereby decreases inflammatory response in human intestinal epithelial cells. In addition, curcumin confers protection without damaging the membrane tight junction or actin skeleton change in intestine epithelial cells. Therefore, curcumin treatment protects the gut from bacterial invasion via reduction of ER stress and anti-inflammatory response in intestinal epithelial cells. CONCLUSIONS: Taken together, our data demonstrate the important role of curcumin in protecting the intestine by modulating ER stress and inflammatory response post intoxication.

Ultrasonographic Appearance of the Gestational Structures throughout Pregnancy in Pet Dogs 1. Time of Initial I)election of the Fetal and Extra-fetal Structures (애완견에서 임신일령에 따른 임신구조물의 초음파상 1. 태아 및 태아외구조물의 최초 관찰시기)

  • 강병규;최한선;신창록;서동호;박인철;손창호
    • Journal of Veterinary Clinics
    • /
    • v.14 no.2
    • /
    • pp.279-286
    • /
    • 1997
  • Serial ultrasonographic examinations were daily performed on 11 bitches (5 Maltese and 3 Yorkshire terrier) from day 15 until parturition to determine the time of Sift detection and ultrasonographic appearance of the fetal and extra-fetal structures. Gestational age was timed from the day of ovulation (day 0), which was estimated to occur when p18sma progesterone concentration was first increased above 4.0 ng/ml. The gestational length in 8 bitches was 61.5 (range: 60-64) days. The initial detection time of fetal and extra-fetal structures were: gestational sac at days 20.5 (18-23); zonary placenta in the uterine wall at days 25.4 (24-30); yolk sac membrane at days 25,5 (23-37); amniotic mombrane at days 28.7 (25-32); embryo initial detection at days 23.3 (20-26); fetal heartbeat at days 23.9 (21-27); fetal movement at days 31.3 (26-34); limb buds at days 32.1 (29-35); rotomarh at days 35.3 (32-40); urinary bladder at days 35.6 (33-39); skeleton at days 37.8 (37- 40) and kidney at days 45.3 (41-49), respectively.

  • PDF