• Title/Summary/Keyword: Peripheral Blood

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Effect of IL-4 on the Development and Function of Memory-like CD8 T Cells in the Peripheral Lymphoid Tissues

  • Hi-Jung Park;Ara Lee;Jae-Il Lee;Seong Hoe Park;Sang-Jun Ha;Kyeong Cheon Jung
    • IMMUNE NETWORK
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    • v.16 no.2
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    • pp.126-133
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    • 2016
  • Unlike conventional T cells, innate CD8 T cells develop a memory-like phenotype in the thymus and immediately respond upon antigen stimulation, similar to memory T cells. The development of innate CD8 T cells in the thymus is known to require IL-4, which upregulates Eomesodermin (Eomes). These features are similar to that of virtual memory CD8 T cells and IL-4-induced memory-like CD8 T cells generated in the peripheral tissues. However, the relationship between these cell types has not been clearly documented. In the present study, IL-4-induced memory-like CD8 T cells generated in the peripheral tissues were compared with innate CD8 T cells in terms of phenotype and function. When an IL-4/anti-IL-4 antibody complex (IL-4C) was injected into C57BL/6 mice daily for 7 days, the EomeshiCXCR3+ CD8 T cell population was markedly increased in the peripheral lymphoid organs and blood. These cells were generated from naïve CD8 T cells or accumulated via the expansion of pre-existing CD44hiCXCR3+ CD8 T cells. Initially, the majority of these CXCR3+ CD8 T cells expressed low levels of CD44, which was followed by the conversion to the CD44hi phenotype. This conversion was associated with the acquisition of enhanced effector function. After discontinuation of IL-4C treatment, Eomes expression levels gradually decreased in CXCR3+ CD8 T cells. Taken together, the results of this study demonstrate that IL-4-induced memory-like CD8 T cells generated in the peripheral lymphoid tissues are phenotypically and functionally similar to the innate CD8 T cells generated in the thymus.

Comparative Analysis of Photoplethysmography under Pulsed Magnetic Field and Low Level Laser Stimulus: Motivation for Blood Flow Increase using Stimulus on Acupoint LI4 (Hegu)

  • Kim, Young Jin;Yoo, Jun Sang;Hwang, Do Guwn;Lee, Hyun Sook
    • Journal of Magnetics
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    • v.19 no.1
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    • pp.32-36
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    • 2014
  • The purpose of this study was to investigate the effect of pulsed magnetic field (PMF) and low frequency low level laser (LFLLL) stimuli on acupoint LI4 (Hegu) using photoplethysmography (PPG). Our PMF system was designed to generate maximum intensity of 0.20 T at a transition time of 0.16 ms, with pulse intervals of 1 Hz. The diode laser with wavelength of 650 nm and power of 5 mW was also employed. It was observed the change of the pulsating blood volume through measuring PPG signals from both hands. These results imply that stimulating acupoint LI4 with PMF and LFLLL improves the circulation of peripheral vascular system. In particular, PMF stimulation brings a big improvement of the blood flow even with short term stimulation of 3-4 minutes compared to LFLLL stimulus.

A Study on the Hypotensive Action of Astragali Radix Water Extract in the Rabbit (황기의 혈압강하 작용에 관한 연구)

  • 임동윤
    • YAKHAK HOEJI
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    • v.23 no.2
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    • pp.69-80
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    • 1979
  • Effects of Astragali Radix Water Extract (ARWE) on the blood pressure were investigated in the whole rabbit and the spinalized rabbit. ARWE, when administered into the ear-vein or lateral ventricle, produced a fall in the blood pressure in the whole rabbit, but intravenous ARWE in the spinalized rabbit did not elicite the hypotensive action. Pretreatments with chlorisondamine, guanethidine, phentolamine and cyproheptadine in the whole rabbit weakened the depressor action of ARWE. The hypotensive action of the whole rabbit to ARWE was not influenced by the pretreatment of the animals with diphennylhydramine, propranolol, and vagotomization, whereas inhibited by atropine. ARWE did not affect the pressor response by angiotensin. However, it enhanced the hypertensive action by norepineprine and reduced the elevation in the blood pressure by carotid occlusion in the whole rabbit. These experimental observations suggest that ARWE may cause the depressor response via mechanisms of the central sympathetic blocking action, cholinergic action by peripheral origin and serotonin-like action.

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A Study on the Methodology of Chromosome Preparation from Blood Culture (혈액세포를 이용한 염색체 분리 분석에 관한 방법적 고찰)

  • Sohn, S.H.;Chung, K.M.
    • Clinical and Experimental Reproductive Medicine
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    • v.21 no.2
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    • pp.207-214
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    • 1994
  • This study was carried out to develop the methodology of chromosome preparation from blood cultures in mammals which included human, mouse, cattle and pig. For karyotyping, 0.5-5.0ml of peripheral blood were collected and cultured. The satisfactory results were obtained from macroculture and microculture in all species. In culture, the patterns of cell growth were no difference among media except serum concentration and mitogen supplement. The presence of mitogen and fetal bovine serum in medium significantly affected the mitotic index. The optimal culture condition was 37$^{\circ}C$ for 3 days. And the concentration of colcemid and reincubation time also affected the chromosome morphology. In harvest, chromosome patterns were mainly affected on hypotonic treatment which included treated time and temperature, dropwise of fixative solution, and drying after slide preparation.

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Differential Diagnosis and Treatment of Anemia in Children (소아 빈혈의 감별진단 및 치료)

  • LIm, Young Tak
    • Clinical and Experimental Pediatrics
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    • v.48 no.2
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    • pp.121-125
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    • 2005
  • Anemia can be defined as a reduction in blood hemoglobin concentration or red cell mass relative to age matched normal values. Clinical presentation may range from obviously pale and lethargy to an incidental finding during screening of an otherwise well appearing child. The differential diagnosis of anemia in each instance is broad with numerous possible etiologies. A careful history and physical examination as well as complete blood count, peripheral blood smear and additional laboratory tests are necessary in defining underlying cause of the anemia and guide in further treatment plans. In addition, Iron deficiency anemia and anemia of inflammation are common causes of mild to moderate anemia in children, but most pediatricians have some confusions to differentiate these two entities.

Cutaneous epitheliotropic T-cell lymphoma with Sézary syndrome in a dog

  • Lee, Song in;Lee, Han Joon;Seo, Kyoungwon;Song, Kunho
    • Korean Journal of Veterinary Service
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    • v.44 no.4
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    • pp.309-313
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    • 2021
  • A 12-year-old, spayed female, Toy-poodle dog presented in progressive, pruritic carpal mass and mandibular papule. The skin lesions and enlarged superficial lymph nodes were surgically removed. According to histopathology and immunohistochemistry, the patient diagnosed as cutaneous epitheliotropic T-cell lymphoma with lymph node metastasis. Chemotherapy with L-asparaginase, lomustine and prednisolone was initiated. The patient deteriorated despite treatment and was admitted to the hospital. Blood tests revealed significant leukocytosis. Circulating large lymphocytes with convoluted and cerebriform nuclei seen in peripheral blood led to presumption of Sézary cells. Thus, considering skin, lymph nodes and blood involvement, Sézary syndrome was diagnosed.

Peripheral Vestibular Syndrome in a Cat with Foreign Body Otitis Media/Interna

  • Gu, Su-Hyun;Jung, Dong-In;Kang, Byeong-Teck;Kim, Ju-Won;Yoo, Jong-Hyun;Park, Chul;Park, Hee-Myung
    • Journal of Veterinary Clinics
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    • v.25 no.3
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    • pp.192-194
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    • 2008
  • A 15-month-old, intact male, domestic short hair cat was presented with ataxia, protrusion of the right third eyelid, and anorexia. Clinical signs were firstly noted after ear cleaning at home. Symptoms of the Homer's syndrome were evident. However, postural and proprioceptive reaction deficits were not detected on neurologic examination. Otoscopic examination revealed foreign body in right ear canal. A diagnosis of peripheral vestibular syndrome was made based on results of physical examination including neurologic and otic examination, blood work, and magnetic resonance imaging (MRI). Based on these examinations, the present patient was definitely diagnosed as otitis medial interna induced by foreign body. The vestibular signs were resolved 10 days after removal of cotton tips in right ear canal. This case report indicates that home-care cotton swab can iatrogenically induce otitis media/interna in cats.

Clinical Study on Two Cases of In patients with Diabetic Peripheral Neuropathy (당뇨병성 말초 신경병증 2례에 대한 임상고찰)

  • Choi, Hoon-Seob;Cho, Chung-Sik;Kim, Chul-Jung
    • Journal of Haehwa Medicine
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    • v.13 no.2
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    • pp.251-258
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    • 2004
  • Two cases of in patients with diabetic peripheral neuropathy were reported in this clinical study. After the study, the results were as follows: 1. Diabetic peripheral neuropathy was occurred with both insulin dependent diabetic mellitus(IDDM) patients, long and short durations, and non insulin dependent diabetic mellitus(NIDDM) patients. However, the degree of subjective symptom was stronger with the former patients. 2. Non insulin dependent diabetic mellitus(NIDDM) patients on dosage of Gamisamultang (加味四物湯) showed remarkable decrease of duration of illness and pain; however, plantar causalgic pain was unremarkable. In contrast to non insulin dependent diabetic mellitus(NIDDM) patients, long duration of insulin dependent diabetic mellitus(IDDM) patients showed remarkable decrease of plantar causalgic pain: however, pain decreased unremarkably. 3. The general treatment of diabetic patients was the control of blood glucose level; however it seemed to be no effect on the degree of subjective symptom. When patients were treated with acupuncture, followed by electropucture, on Palpung(八風), Taechung(太衝:Liv3), Chok-imup(足臨泣: Gb41), Hyonjong(縣鐘 : G39), Sungsan(承山 : B57), Chok-Samni(足三里 : S36), and Yangnungchon(陽陵泉 : G34) showed a great effect on decreasing the pain.

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Spontaneous Vertigo (자발현훈)

  • Choi, Kwang-Dong;Kim, Ji Soo
    • Annals of Clinical Neurophysiology
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    • v.9 no.1
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    • pp.1-4
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    • 2007
  • Vertigo is an illusion of rotation, which results from an imbalance within the vestibular system. This review focuses on two common presentations of spontaneous vertigo: acute prolonged spontaneous vertigo and recurrent spontaneous vertigo. Common causes of acute prolonged spontaneous vertigo include vestibular neuritis, labyrinthitis, and brainstem or cerebellar stroke. The history and detailed neurological/neurotological examinations usually provide the key information for distinguishing between peripheral and central causes of vertigo. Brain MRI is indicated in any patient with acute vertigo accompanied by abnormal neurological signs, profound imbalance, severe headache, and central patterns of nystagmus. Recurrent spontaneous vertigo occurs when there is a sudden, temporary, and largely reversible impairment of resting neural activity of one labyrinth or its central connections, with subsequent recovery to normal or near-normal function. Meniere's disease, migrainous vertigo, and vertebrobasilar insufficiency (VBI) are common causes. The duration of the vertigo attack is a key piece of information in recurrent spontaneous vertigo. Vertigo of vascular origin, such as VBI, typically lasts for several minutes, whereas recurrent vertigo due to peripheral inner-ear abnormalities lasts for hours. Screening neurotological evaluations, and blood tests for autoimmune and otosyphilis are useful in assessment of recurrent spontaneous vertigo that are likely to be peripheral in origin.

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Studies on Garment Restraint(I) -Change of Skin Temperature by Continuous Restraint Method- (의복의 구속성에 관한 연구(I) -지속적인 구속방법에 따른 피부온 변화에 대하여-)

  • 심부자
    • Journal of the Korean Home Economics Association
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    • v.29 no.1
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    • pp.13-25
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    • 1991
  • We measured change of peripheral skin temperature and mean skin temperature when the upper arm and thigh are pressured in order to know the effect of skin pressure applied by clothing on blood circulation. After release from pressure, we observed also recovery condition. At the same time, we examined relation between pressure and a feeling of thightness. Three physiques of healthy females, namely slender, standard and plump, served as subjects. We used continuous restraint method with skin pressure applied by experimental fabric for 10 min. As a result of this experiment, we obtained following findings. 1. The significant difference was marked at the pressure, measuring time and physique with change of skin temperature under upper arm restraint. The peripheral and mean skin temperature decreased with the lapse of restraint time. A remarkable tendency observed according to the increase of restraint pressure. Recovery condition after release from pressure not yet recovered to original state, for all after a lapse of 10 min. 2. The significant difference was marked at the pressure, measuring time and physique with change of skin temperature under thigh restraint, especially different physique was remarkable among them. The peripheral skin temperature decreased or decreased. Recovery condition after release from pressure was the same upper arm. 3. Main factor affecting the evaluation of a feeling of tightness was restraint pressure. The value of pressure sensation made remarkable declined after a lapse of 10 min restraint time. Individual differences, however, were shown in pressure sensation.

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