• 제목/요약/키워드: Nervous system disorders

검색결과 231건 처리시간 0.024초

Inhibitory Aromatase Effects of Flavonoids from Ginkgo Biloba Extracts on Estrogen Biosynthesis

  • Park, Yong Joo;Choo, Wun Hak;Kim, Ha Ryong;Chung, Kyu Hyuck;Oh, Seung Min
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권15호
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    • pp.6317-6325
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    • 2015
  • Ginkgo biloba extract (GBE) is a popular phytomedicine and has been used for disorders of the central nervous system, cardiovascular, renal, respiratory, and circulatory diseases. Although GBE is a complex mixture of over 300 compounds, its major components are 24% flavonoids and 6% terpene lactones. In this study, we tested the inhibitory effects of the three major flavonoids (kaempferol, quercetin, and isorhamnetin) from GBE, independently and as mixtures, on aromatase activity using JEG-3 cells (human placental cells) and recombinant proteins (human placental microsome). In both systems, kaempferol showed the strongest inhibitory effects among the three flavonoids; the flavanoid mixtures exerted increased inhibitory effects. The results of exon I.1-driven luciferase reporter gene assays supported the increased inhibitory effects of flavonoid mixtures, accompanied by suppression of estrogen biosynthesis. In the RT-PCR analysis, decreased patterns of aromatase promoter I.1 mRNA expressions were observed, which were similar to the aromatase inhibition patterns of flavonoids and their mixtures. The present study demonstrated that three flavonoids synergistically inhibit estrogen biosynthesis through aromatase inhibition, decrease CYP19 mRNA, and induce transcriptional suppression. Our results support the usefulness of flavonoids in adjuvant therapy for breast cancer by reducing estrogen levels with reduced adverse effects due to estrogen depletion.

부신백질이영양증 환자의 치과치료를 위한 외래전신마취 -증례 보고- (Ambulatory Anesthesia Management of the Patient with Adrenoleukodystrophy for Dental Treatment -A Case Report-)

  • 서광석;박소연;신터전;김현정
    • 대한치과마취과학회지
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    • 제10권1호
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    • pp.45-49
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    • 2010
  • Adrenoleukodystrophy (ALD) is a rare X-linked genetic disorder associated with various central nervous system problems and adrenal insufficiency. It is common in childhood and symptoms include loss of previously acquired neurological abilities, seizures, ataxia, Addison's disease as well as degeneration of visual and auditory function. These children frequently require anesthesia during imagining procedure such as MRI or during some surgical procedures like gastrostomy. There is special need for careful management because of numerous anesthetic challenges like difficulty in cooperation, seizure disorders, life-threatening airway obstruction, copious oral secretion and possibility of aspiration. In addition, adrenal involvement and hypofunction must be considered for safe anesthesia management. We report a successful anesthetic management in a patient with ALD for dental procedures.

피로의 생물학적 측면 (Biological Aspects of Fatigue)

  • 이문수;조숙행
    • 정신신체의학
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    • 제15권2호
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    • pp.65-72
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    • 2007
  • 정신과에 내원하는 환자들 중에서 피로를 호소하는 환자들의 비율이 높으며, 만성적인 피로감을 호소하는 환자들에서 다른 우울증과 같은 정신과질환이 공존하는 경우도 많다. 환자들은 많은 괴로움을 호소하나, 기저의 임상상태의 종류와 심각도에 대해서는 비특이적이므로 실제로는 임상가에 의해서 무시되는 경우가 많으며, 그 중요성이 과소평가되는 경우가 많아서, 적절한 처치를 받지 못하고 삶의 질에도 많은 영향을 받게 된다. 피로는 말초와 중추신경계 둘 다에서 영향을 받는 다차원적인 현상으로 이해하여야 한다. 환자가 호소하는 피로증상에 대해서 좀 더 적극적으로 조절하기 위한 여러 약물학적 및 비약물학적 접근법들이 시도되고 있다.

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우울증상을 동반한 다발성 경화증 재발 환자의 치험 1례 (A Case of Multiple Sclerosis with Depression)

  • 허은정;김지현;윤창준;류희영
    • 동의신경정신과학회지
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    • 제20권2호
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    • pp.217-227
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    • 2009
  • Objectives : Multiple sclerosis (MS) is a demyelination disease of central nervous system, presenting a various neurological disorders depending on the lesion. In the view of oriental medicine, MS is similar to Flaccidity-syndrome(痿證). Also, since MS is a chronic disease which repeats the recurrences with periods of remission of the symptoms in between, it may usually be accompanied by depression. However, the etiology, treatment, and cause of recurrence of MS remain unknown, and also, as the recurrences of MS have been repeated, disease burden has been accumulated, which aggravates disorder. This case of MS experienced depression after the patient had been diagnosed as bad consequence based on the past 5 times recurrences of multiple sclerosis. Methods : We saw the causes as vicera and bowels functional disorder which might have come from a poor diet. Thus, we diagnosed this case as dual deficiency of spleen and kidney(脾腎兩虛), stagnant qi transforming into fire(氣鬱化火) and liver-kidney deficiency(肝腎不足) and treated it with Herb medication, acupuncture therapy, and supportive therapy, making the patient better. Results : We have improved the patient's condition to the time before 5th recurrence. Conclusions : This result suggests that our oriental medical treatments was effective on multiple sclerosis with depression.

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Genotoxicity Study of Glycopeptide (G-7%NANA)

  • Kim, Ha-Young;Kim, Min-Hee;Kim, Hee-Kyong;Park, Yeong-Chul
    • Toxicological Research
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    • 제34권3호
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    • pp.259-266
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    • 2018
  • Glycomacropeptide (GMP), a whey protein of milk, has functions including differentiation and development of nervous system, and anticancer and antiviral effects. To develop new functions, N-acetylneuraminic acid (NANA) containing 7% sialic acid was separated from GMP to produce G-7%NANA. N-glycolylneuraminic acid (Neu5Gc) is another type of sialic acid separated from GMP, which has been linked to immune disorders and chronic inflammation-mediated diseases. Therefore, safety was a concern in the use of G-7%NANA in functional foods. To ensure safety, in this study, three genetic toxicity tests on G-7%NANA were conducted. In the reverse mutation test using Salmonella typhimurium TA98, TA100, TA1535, TA1537, and Escherichia coli WP2uvrA, and in the chromosome aberration test using CHO-K1 cells, no significant differences from negative control were found at all dose levels. Similarly, no dose-related differences were evident compared to negative control in the micronucleus test using ICR mice. There was no evidence of G-7%NANA-related genetic toxicity.

Cyclic Vomiting Syndrome: A Functional Disorder

  • Kaul, Ajay;Kaul, Kanwar K.
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제18권4호
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    • pp.224-229
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    • 2015
  • Cyclic vomiting syndrome (CVS) is a functional disorder characterized by stereotypical episodes of intense vomiting separated by weeks to months. Although it can occur at any age, the most common age at presentation is 3-7 years. There is no gender predominance. The precise pathophysiology of CVS is not known but a strong association with migraine headaches, in the patient as well as the mother indicates that it may represent a mitochondriopathy. Studies have also suggested the role of an underlying autonomic neuropathy involving the sympathetic nervous system in its pathogenesis. CVS has known triggers in many individuals and avoiding these triggers can help prevent the onset of the episodes. It typically presents in four phases: a prodrome, vomiting phase, recovery phase and an asymptomatic phase until the next episode. Complications such as dehydration and hematemesis from Mallory Wise tear of the esophageal mucosa may occur in more severe cases. Blood and urine tests and abdominal imaging may be indicated depending upon the severity of symptoms. Brain magnetic resonance imaging and upper gastrointestinal endoscopy may also be indicated in certain circumstances. Management of an episode after it has started ('abortive treatment') includes keeping the patient in a dark and quiet room, intravenous hydration, ondansetron, sumatriptan, clonidine, and benzodiazepines. Prophylactic treatment includes cyproheptadine, propranolol and amitriptyline. No mortality has been reported as a direct result of CVS and many children outgrow it over time. A subset may develop other functional disorders like irritable bowel syndrome and migraine headaches.

신경성 발성장애와 기능성 발성장애의 감별 진단 (Differential Diagnosis between Neurogenic and Functional Dysphonia)

  • 김소연;이상혁
    • 대한후두음성언어의학회지
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    • 제28권2호
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    • pp.71-78
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    • 2017
  • Voice disorder is classified into three categories, structural, neurogenic and functional dysphonia. Neurogenic dysphonia refers to a disruption in the nerves controlling the larynx. Common examples of this include complete or partial vocal cord paralysis, spasmodic dysphonia. Also it occurs as part of an underlying neurologic condition such as Parkinson's disease, myasthenia gravis, Lou Gehrig's disease or disorder of the central nervous system that causes involuntary movement of the vocal folds during voice production. Functional dysphonia is a voice disorder in the absence of structual or neurogenic laryngeal characteristics. A near consensus exist that Muscle tension dysphonia (MTD) is functional voice disorder wherein hyperfunctional laryngeal muscle activity whereas Spasmodic dysphonia (SD) is neurogenic, action-induced focal laryngeal dystonia including several subtype. Both Adductor type spasmodic dysphonia (AdSD) and MTD may be associated with excessive supraglottic contraction and compensation, resulting in a strained voice quality with spastic voice breaks. It makes these two disorders extremely difficult to differentiate based on clinical interpretation alone. Because treatment for AdSD and MTD are quite different, correct diagnosis is important. Clinician should be aware of the specific vocal characteristics of each disease to improve therapeutic outcome.

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Anti-adipogenic Effect of Hydrolysate Silk Fibroin in 3T3-L1 Cells

  • Chon, Jeong-Woo;Lee, Kwang-Gill;Park, Yoo-Kyoung;Park, Kyung-Ho;Yeo, Joo-Hong
    • International Journal of Industrial Entomology and Biomaterials
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    • 제21권2호
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    • pp.169-174
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    • 2010
  • Hydrolysate silk fibroin (HSF) is a fibrous protein composed of parallel $\beta$-structures and is made from pure silk elements including 18 amino acids, with glycine, alanine, and serine comprising of over 80% of the amino acids. Numerous studies have documented a range of effects of HSF, including moisturizing, antioxidant activity, nervous system disorders, and many more. We investigated whether HSF has anti-obesity effects in vitro. The effects of HSF inhibition on lipid accumulation and acceleration of lipid degradation in 3T3-L1 cells were studied. Treatment of 3T3-L1 cells with HSF caused significant inhibition of cell viability, an increase in glycerol release, and a decreased in adipocyte differentiation. Moreover HSF stimulated downregulated of adipogenic enzyme expressions (PPAR${\gamma}$ and C/EBP${\alpha}$) and up-regulated of fatty oxidation enzyme expressions (CPT-1 and UCP-2). Based on these results, hydrolysate silk fibroin can be suggested as a potential therapeutic substance as part of a prevention or treatment strategy for obesity.

경관급식 노인 환자의 영양공급실태와 영양상태 평가 (Feeding and Nutritional Status of Elderly Patients receiving Enteral Tube Feeding)

  • 윤화영;김혜경
    • 한국식품영양학회지
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    • 제31권1호
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    • pp.52-61
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    • 2018
  • The purpose of this study is to examine the feeding and nutritional status of enteral tube-fed elderly patients. Subjects included 77 elderly hospitalized patients who had received enteral nutrition more than one week before admission. Medical records on admission and actual feeding volume were used to assess anthropometric, biochemical, and nutritional status. Most patients manifested disorders of the nervous system (93.5%) and the average duration of tube feeding was 13.9 months. The average feeding volume of formula was 1,107 mL per day and the mean ratios of calorie and protein (supplied vs. required) were 81.7% and 80.9%, respectively. At admission, 57.4% of the patients were malnourished according to the institutional criteria. Patients receiving less than 80% of the required calories were in worse nutritional status compared with those receiving more than 80% of the required calories. Body mass index, percent ideal body weight, serum albumin level and blood lipid levels (total cholesterol, HDL-cholesterol, triglyceride) were significantly lower in patients receiving less than 80% of the required calories. These results indicate the high prevalence of malnutrition and the need for increased attention and nutritional care of elderly patients undergoing long-term enteral nutrition.

당뇨병성 신경병증에 대한 고찰 (Review of Diabetic Neuropathy)

  • 배성수;백수정;김종열
    • The Journal of Korean Physical Therapy
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    • 제11권3호
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    • pp.151-158
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    • 1999
  • 당뇨병성 신경병증은 환자의 자각증상이 없다하더라도 검사를 시행했을 시 신경전달속도가 떨어진다. 특히 감각신경과 자율신경의 손상이 지배적이다. 환자는 외부적인 압박에 대하여 감각이 둔하게 된다. 그로 인해 궤양이 생기고 보행과 자세조절에 문제가 생기게된다. 당뇨가 심하게 되면 환자는 가벼운 건드림조차도 통증으로 인지한다. 때로는 통증 때문에 잠을 잘 수 없기도 없다. 당뇨 치료법에는 인슐린요법, 식이요법 외에 운동치료가 당을 조절하는데 매우 효과적이다. 부가적으로 생기는 통증조절에는 경피전기신경자극이 적절하다. 앞으로의 당뇨환자들의 치료접근 중 물리치료 방법에 있어서, 궤양치료, 통증치료, 신경손상의 회복, 보행조절과 자세안정, 그리고 운동치료에 관한 더 많은 연구가 필요하다.

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