• Title/Summary/Keyword: peripheral resistance

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A Case of Pseudohypoparathyroidism in a Premature Infant (미숙아에서 발견된 가성부갑상선 기능저하증 1례)

  • Yang, Jong Il;Seo, Jang Won;Kim, Ji Young
    • Clinical and Experimental Pediatrics
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    • v.46 no.10
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    • pp.1032-1035
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    • 2003
  • In pseudohypoparathyroidism as reported by Albright in 1942, the parathyroid gland can normally synthesize and secrete parathyroid hormone(PTH). Pseudohypoparathyroidism has a similar biochemical finding with hypoparathyroidisms like hypocalcemia and hyperphosphatemia due to target tissue resistance to PTH. Administered PTH does not raise the serum levels of calcium and urinary phosphate. PTH activates G-protein in peripheral tissue and adenylate cyclase through a second messenger, cAMP. Pseudohypoparathyroidism produces hyperphosphatemia and hypocalcemia because of the resistance to PTH in peripheral tissue due to a defect of G-protein, although it releases PTH normally. According to the mechanism of resistance, pseudohypoparathyroidism is classified into types : Ia, Ib, Ic and psedopseudohypoparathyroism. Type Ia is accompanied by congenital growth retardation and abnormal bony development that shows mental retardation, obesity, low height, round face, short metacarpal bone and metatarsal bone, ectopic calcification, etc. We report a case of pseudohypoparathyroidism in a premature who shows hypocalcemia, hyperphosphatemia, elevation of serum PTH and 24 hr urinary basal c-AMP in biochemical tests without Albright's hereditary osteodystrophy at physical examination, accompanied by a spontaneous fracture in the femur.

Estimation of Blood Pressure Diagnostic Methods by using the Four Elements Blood Pressure Model Simulating Aortic Wave Reflection (대동맥 반사파를 재현한 4 element 대동맥 혈압 모델을 이용한 혈압 기반 진단 기술의 평가)

  • Choi, Seong Wook
    • Journal of Biomedical Engineering Research
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    • v.36 no.5
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    • pp.183-190
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    • 2015
  • Invasive blood pressure (IBP) is measured for the patient's real time arterial pressure (ABP) to monitor the critical abrupt disorders of the cardiovascular system. It can be used for the estimation of cardiac output and the opening and closing time detection of the aortic valve. Although the unexplained inflections on ABP make it difficult to find the mathematical relations with other cardiovascular parameters, the estimations based on ABP for other data have been accepted as useful methods as they had been verified with the statistical results among vast patient data. Previous windkessel models were composed with systemic resistance and vascular compliance and they were successful at explaining the average systolic and diastolic values of ABP simply. Although it is well-known that the blood pressure reflection from peripheral arteries causes complex inflection on ABP, previous models do not contain any elements of the reflections because of the complexity of peripheral arteries' shapes. In this study, to simulate a reflection wave of blood pressure, a new mathematical model was designed with four elements that were the impedance of aorta, the compliance of aortic arch, the peripheral resistance, and the compliance of peripheral arteries. The parameters of the new model were adjusted to have three types of arterial blood pressure waveform that were measured from a patient. It was used to find the relations between the inflections and other cardiovascular parameters such as the opening-closing time of aortic valve and the cardiac output. It showed that the blood pressure reflection can bring wide range errors to the closing time of aortic valve and cardiac output with the conventional estimation based on ABP and that the changes of one-stroke volumes can be easily detected with previous estimation while the changes of heart rate can bring some error caused by unexpected reflections.

A Facial Chuna Manual Therapy for Peripheral Facial Nerve Palsy

  • Park, Yu-Kyeong;Lee, Cho In;Lee, Jung Hee;Lee, Hyun-Jong;Lee, Yun-kyu;Seo, Jung-Chul;Kim, Jae Soo
    • Journal of Acupuncture Research
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    • v.36 no.4
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    • pp.197-203
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    • 2019
  • The purpose of this study was to investigate useful manual therapy techniques for peripheral facial nerve palsy and to propose guidelines to be applied for current manual therapy techniques. Several databases were searched to find manual therapies for facial palsy. These therapies included cervical, and temporomandibular joint chuna manual therapy, proprioceptive neuromuscular facilitation, neuromuscular re-education, facial exercise, and mime therapy. Both cervical, and temporomandibular joint chuna manual therapy release nerve compression, helping blood circulation and nerve conduction. Proprioceptive neuromuscular facilitation uses irradiation, bilateral activation, and eccentric facilitation to improve muscle power and symmetry. Neuromuscular re-education, as a retraining tool for facial movement patterns, enhances neuromuscular feedback. Facial exercise helps the patient continuously move and massage facial muscle themselves. Mime therapy aims to develop a conscious connection between the use of certain muscles and facial expressions. The use of facial chuna manual therapy for peripheral facial nerve palsy can stimulate the proprioceptive neuromuscular receptors in the face. Peripheral facial nerve palsy has 4 phases; progress phase, plateau phase, recovery phase, and sequelae phase. Each phase needs different treatments which include relaxation, assistance, resistance, origin-insertion extension, and nerve pathway expansion.

Determination of Insulin Signaling Pathways in Hepatocytes

  • Kim, Sang-Kyum
    • Toxicological Research
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    • v.21 no.3
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    • pp.195-208
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    • 2005
  • Diabetes is a major cause of morbidity and mortality, and associated with a high risk of atherosclerosis, and liver, kidney, nerve and tissue damage. Defective insulin secretion in pancreas and/or insulin resistance in peripheral tissues is a central component of diabetes. It is well established that, regardless of the degree of muscle insulin resistance, glucose levels in diabetic and non-diabetic individuals are determined by the rate of hepatic glucose production. Moreover recently studies using liver-specific insulin receptor knockout mice show the paramount role of the liver in insulin resistance and diabetes. Insulin exerts a multifaceted and highly integrated series of actions via its intracellular signaling systems. The first major section of this review defines the major insulin-mediated signaling pathways including phosphatidylinositol 3-kinase and mitogen activated protein kinases. The second major section of the review presents a summary and evaluation of methods for determination of the role and function of signaling pathways, including methods for determination of kinase phosphorylation, the use of pharmacological inhibitors of kinase and dominant-negative kinase constructs, and the application of new RNA interference methods.

Ginsenosides for the treatment of insulin resistance and diabetes: Therapeutic perspectives and mechanistic insights

  • Tae Hyun Kim
    • Journal of Ginseng Research
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    • v.48 no.3
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    • pp.276-285
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    • 2024
  • Diabetes mellitus (DM) is a systemic disorder of energy metabolism characterized by a sustained elevation of blood glucose in conjunction with impaired insulin action in multiple peripheral tissues (i.e., insulin resistance). Although extensive research has been conducted to identify therapeutic targets for the treatment of DM, its global prevalence and associated mortailty rates are still increasing, possibly because of challenges related to long-term adherence, limited efficacy, and undesirable side effects of currently available medications, implying an urgent need to develop effective and safe pharmacotherapies for DM. Phytochemicals have recently drawn attention as novel pharmacotherapies for DM based on their clinical relevance, therapeutic efficacy, and safety. Ginsenosides, pharmacologically active ingredients primarily found in ginseng, have long been used as adjuvants to traditional medications in Asian countries and have been reported to exert promising therapeutic efficacy in various metabolic diseases, including hyperglycemia and diabetes. This review summarizes the current pharmacological effects of ginsenosides and their mechanistic insights for the treatment of insulin resistance and DM, providing comprehensive perspectives for the development of novel strategies to treat DM and related metabolic complications.

Shake table responses of an RC low-rise building model strengthened with buckling restrained braces at ground story

  • Lee, Han Seon;Lee, Kyung Bo;Hwang, Kyung Ran;Cho, Chang Seok
    • Earthquakes and Structures
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    • v.5 no.6
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    • pp.703-731
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    • 2013
  • In order to verify the applicability of buckling restrained braces (BRB's) and fiber reinforced polymer (FRP) sheets to the seismic strengthening of a low-rise RC building having the irregularities of a soft/weak story and torsion at the ground story, a series of earthquake simulation tests were conducted on a 1:5 scale RC building model before, and after, the strengthening, and these test results are compared and analyzed, to check the effectiveness of the strengthening. Based on the investigations, the following conclusions are made: (1) The BRB's revealed significant slips at the joint with the existing RC beam, up-lifts of columns from RC foundations and displacements due to the flexibility of foundations, and final failure due to the buckling and fracture of base joint angles. The lateral stiffness appeared to be, thereby, as low as one seventh of the intended value, which led to a large yield displacement and, therefore, the BRB's could not dissipate seismic input energy as desired within the range of anticipated displacements. (2) Although the strengthened model did not behave as desired, great enhancement in earthquake resistance was achieved through an approximate 50% increase in the lateral resistance of the wall, due to the axial constraint by the peripheral BRB frames. Finally, (3) whereas in the original model, base torsion was resisted by both the inner core walls and the peripheral frames, the strengthened model resisted most of the base torsion with the peripheral frames, after yielding of the inner core walls, and represented dual values of torsion stiffness, depending on the yielding of core walls.

Relationship Between Mitochondrial DNA Copy Number, Metabolic Abnormalities and Hepatic Steatosis (지방간 및 대사 인자들과 말초혈액 백혈구의 사립체 DNA copy 수와의 연관성)

  • Kwon, Kil-Young;Jun, Dae-Won
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.6
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    • pp.2093-2098
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    • 2010
  • Insulin resistance plays a central role in fatty liver, a part of the metabolic syndrome. This study examined the relationship between fatty liver, metabolic abnormalities and mitochondrial DNA [mtDNA] copy number in peripheral blood that is correlated with diabetes or metabolic markers. Fatty liver was assessed by questionnaire on alcohol consumption and abdominal ultrasonography. MtDNA copy number in peripheral leukocytes was measured by a real-time quantitative polymerase chain reaction [PCR]. Among 445 subjects, 148 subjects had hepatic steatosis and 297 were controls. mtDNA copy number was significantly lower in fatty liver group in comparison with that of normal finding group. This result is similar in both groups, alcoholic or non-alcoholic fatty liver group. MtDNA copy number was inversely correlated with alanine aminotransferase [ALT], aspartate aminotransferase [AST], gamma-glutamyltransferase [$\gamma$-GTP], body mass index [BMI], waist circumference, diastolic blood pressure, and free fatty acid. MtDNA copy number in peripheral leukocytes was associated with fatty liver and insulin resistance related factors.

Peripheral Blood Immune Cell-based Biomarkers in Anti-PD-1/PD-L1 Therapy

  • Kyung Hwan Kim;Chang Gon Kim;Eui-Cheol Shin
    • IMMUNE NETWORK
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    • v.20 no.1
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    • pp.8.1-8.15
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    • 2020
  • Immune checkpoint blockade targeting PD-1 and PD-L1 has resulted in unprecedented clinical benefit for cancer patients. Anti-PD-1/PD-L1 therapy has become the standard treatment for diverse cancer types as monotherapy or in combination with other anticancer therapies, and its indications are expanding. However, many patients do not benefit from anti-PD-1/PD-L1 therapy due to primary and/or acquired resistance, which is a major obstacle to broadening the clinical applicability of anti-PD-1/PD-L1 therapy. In addition, hyperprogressive disease, an acceleration of tumor growth following anti-PD-1/PD-L1 therapy, has been proposed as a new response pattern associated with deleterious prognosis. Anti-PD-1/PD-L1 therapy can also cause a unique pattern of adverse events termed immune-related adverse events, sometimes leading to treatment discontinuation and fatal outcomes. Investigations have been carried out to predict and monitor treatment outcomes using peripheral blood as an alternative to tissue biopsy. This review summarizes recent studies utilizing peripheral blood immune cells to predict various outcomes in cancer patients treated with anti-PD-1/PD-L1 therapy.

Four Cases of the Patients with Acute Phase of Facial Palsy Treated by Korean Medicine - Focused on Inpatients Who Applied Non-resistance Technique (한방치료로 호전된 급성기 말초성 안면신경마비 치험 4례 - 무저항요법을 적용한 입원 환자 중심으로)

  • Kyung, Da-hyun;Kim, Min-Kyung;Lee, Si-Won;Bae, Ji-Eun;Jang, Ha-Lim;Lim, Seung-Hwan
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.35 no.1
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    • pp.69-80
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    • 2022
  • Objectives : The purpose of this study is to report that the patient with Peripheral Facial palsy received Korean medicine treatments including SJS Non-resistance Technique-Facial(NRT-F) palsy through hospitalization treatment and received treatment effects. Methods : Four patients with peripheral facial palsy were treated with herbal medication, acupuncture, pharmacoacupunture, and NRT-F. The effect of treatment was evaluated by House-Brackmann Scale and the Yanagihara grading system. Results : After Korean medicine treatments with SJS NRT-F, symptoms were decreased and conditions were improved. Furthermore, the House-Brackmann Scale and the Yanagihara grading system scores were numerically better. Conclusions : The Korean medicine treatments with SJS NRT-F might be effective for Facial palsy.

Increase in phagocytic activity of peripheal neutrophil and lysozyme activity of blood serum in Korea catfish (Silurus asotus) intraperitoneally injecteded with $\beta$-glucan ($\beta$-glucan을 접종한 한국산 메기(Silurus asotus)의 호중구와 리소자임 활성 증강)

  • Park, Sung-Woo;Kim, Young-Gill;Choi, Dong-Lim
    • Journal of fish pathology
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    • v.9 no.1
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    • pp.87-93
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    • 1996
  • To examine the effectiveness of $\beta$-glucan in non-specific defence mecanisms of Korean catfish(Silurus asotus), the activities of peripheral neutrophils and serum lysozyme were evaluated after once or twice $\beta$-glucan injections. The number of peripheral neutrophils increased after the injection. The increased number in neutrophils in twice $\beta$-glucan injections maintained longer than in single glucan injecton. But the neutrophils did not showed any remarkable changes in PAS-positive reaction. Peripheral neutrophils from fish injected glucan had enhanced phagocytic activities but there was no significant difference in phagocytic index for the glucan and control groups. An elevation of lysozome activity was also observed in the fish received twice glucan but neither single glucan or physiological saline injection could not evoked an increase of lysozyme activity. These results suggest that $\beta$-glucan can enhance the resistance of Korean catfish against to bacteria infection through the activation of peripheral neutrophils and lysozyme.

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