• Title/Summary/Keyword: kidney tissues

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Effects of Cervus elaphus for herb-acupuncture solution on Antioxidation in Rat's kidney (녹용(鹿茸) 약침(藥針) 제제(製劑)가 흰쥐 신장(腎臟) 조직(組織)의 항산화(抗酸化) 작용(作用)에 미치는 영향(影響))

  • Yoon, Cheol-Ho;Jeong, Ji-Cheon;Shin, Uk-Seob
    • Korean Journal of Oriental Medicine
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    • v.2 no.1
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    • pp.192-204
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    • 1996
  • Cervus elaphus for herb-acupuncture solution (CEHAS) was tested for the effects of free radical generating enzyme and lipid peroxidation in rat's kidney. In vitro, levels of lipid peroxide in tissues of kidney were proportionally decreased to concentration of extracts prepared from CEHAS. They were much more decreased, when lipid peroxidation was induced with ferrous iron (FeII). Also, enzyme activities of xinthine oxidase were decreased. The ratio of type conversion of xanthine oxidase was lowered, two. But, it was not seen changes on enzyme activities of aldehyde oxidase. These results suggest that CEHAS decrease the activities of free radical generating enzymes such as xanthine oxidase which form lipid peroxide.

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Effect of Dexamethasone Stress on Concentrations of Zinc in Blood Plasma and in Sub-Cellular Fractions of Various Tissues of Neonatal Buffalo Calves

  • Singh, Charanbir;Singha, S.P.S.
    • Asian-Australasian Journal of Animal Sciences
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    • v.15 no.7
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    • pp.1022-1025
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    • 2002
  • Effect of chemical stress of daily administration of glucocorticoid (dexamethasone @0.125 mg./calf/day) injections on plasma zinc levels, Zn status of body tissues and its distribution in sub cellular fractions, was studied in neonatal buffalo calves. Daily i/m injections of dexamethasone, starting at the completion of 1 week of age and continued till 8th week, led to a significant decline in plasma Zn concentration from 3rd week onwards, which then persisted throughout the rest of the experimental period. In control group, liver had the highest concentration of zinc, followed by heart, muscle, spleen, kidney and testis. In all these tissues, cytosolic fractions had the highest (>60%) zinc levels followed by nuclear, mitochondrial and microsomal fractions. In dexamethasone treated calves, there was a significant increase in the Zn uptake by the tissues of liver and muscle. This increase in zinc concentration was observed in all the sub cellular fractions of liver and muscle, however about 80% of this increase was in cytosolic fraction. It was concluded that glucocorticoid-induced stress caused increase in Zn levels of liver/muscles and decrease in blood plasma zinc, thus indicating a redistribution of Zn in body.

Protease antigen recovery induces non-specific reaction in B-Cells (Protease antigen recovery의 B-Cell에 대한 비특이반응 유발)

  • Kim, Ok-Jin;Yi, Seong-Joon
    • Korean Journal of Veterinary Pathology
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    • v.7 no.1
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    • pp.11-15
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    • 2003
  • Antigen retrieval (AR) techniques were widely used to recover the antigenicity from the fixed tissues, which were guided by the philosophy of rendering immunohistochemistry (IHC) applicable to routine formalin-fixed, paraffin-embedded tissues for wide application of IHC in research and clinical filed for morphological observation like as anatomy, histology and pathology. Protease antigen recovery (PAR) is an AR technique, which is obtained the antigen retrieve by using enzyme digestion, and commonly used in IHC field. However, during the IHC for the detection of ovine herpesvirus 2 (OvHV-2) antigen, we noted lymphocyte-like cells-specific staining in the infiltrated cells into various organs like as liver and kidney, which was also shown in the IHC tissues with isotype control. However, those signals were not observed in the tissues conducted with in situ hybridization. Therefore, we analyzed the specificity of the IHC detection results. We found that PAR may induce false-positive result during IHC in lymphocyte-like cells, which were infiltrated mainly around vessels and in interstitial tissues. Through the Phenotyping, we realized that those false-positive cells were B-cell-related cells. These results suggest that PAR, a AR using protease, may induce non-specific false-positive reactions during IHC.

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Distribution of Organochlorine Pesticides in Korean Human Tissues (한국인 장기조직중 유기염소제류 농약의 분포)

  • 유영찬;이상기;이수연;양자열;인상환
    • YAKHAK HOEJI
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    • v.45 no.4
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    • pp.366-377
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    • 2001
  • Persistent organochlorine pesticides has been used intensively in agriculture for a long time. The occurrence of organochlorine pesticides in the environment and subsequently in parts of the food chains, results in the intake of these compounds by human and animal. The measurement of the levels of organochlorine pesticides in tissues or blood of human populations is a good marker in evaluating the extent of exposure and hazards. So, most countries have conducted initial monitoring programs to determine organochlorine pesticides and polychlorinated biphenyls in human tissues. But, in Korea, a few research has been reported. In this study, the legally prohibited organochlorines, such as, $\alpha$-BHC, $\beta$-BHC, ${\gamma}$-BHC, $\delta$-BHC, p,p'-DDT, p,p'-DDD, p,p'-DDE, endrin, dieldrin and aldrin were determined in human blood, brain, adipose tissue, kidney cortex and liver tissues collected at autopsy of 10 men and 10 women, 16~65 years of age. Almost all the organochlorine pesticides mentioned previously were determined in human tissue samples indicated that they have been widely distributed in Korean human body. No significant difference was found in the levels of organochlorine pesticides between sexes, districts and ages.

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Fixation of Cellular Ultrastructure by the Microwave Irradiation (마이크로파 조사에 의한 세포 미세구조의 고정 효과)

  • Shin, Kil-Sang;Kim, Wan-Jong;Jeon, Jin-Seok
    • Applied Microscopy
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    • v.26 no.4
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    • pp.401-410
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    • 1996
  • The microwave fixator has recently been introduced in morphological research. The present study was carried out to investigate the ultrastructural effects of microwave fixation of rat brain. kidney, liver and skeletal muscle tissues. The results are as follows: In the case of microwave fixed cerebrum. the cytoplasmic processes of neurons and the various membranous organelles such as nuclear envelope, mitochondria, rough endoplasmic reticulum and Golgi apparatus were well preserved, The myelin sheath wrapping neuronal axon was prominent. Microwave fixed hepatocytes showed the microvilli on the free surface of bile canaliculus, the evident nucleolar components, and typical organelles. In nephron, ultrastructures of glomerulus and Bowman's capsule were preserved, and also tubular wall were structurally observed. Among the skeletal muscle cells, plentiful collagen fibers were appeared, myofibrils and mitochondria were typically observed. In conclusion, the microwave fixation procedures result in an good preservation of the tissues and would be time- and reagent-saving.

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Correlation between Heavy Metal Levels in Tissues of Feral Pigeons(Columba livia) (비둘기의 체내 조직 중 중금속 농도의 상관관계)

  • 남동하;이두표;구태회
    • The Korean Journal of Ecology
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    • v.25 no.5
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    • pp.335-339
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    • 2002
  • Concentrations of Fe, Zn, Mn, Cd and Pb were determined in the tissues of sixty adult pigeons collected at six colonies in Korea, and examined correlations between elements, and between tissues in feral pigeons. As the results, we found many significant correlations between elements, and between tissues in them, A negative correlation between Cd and Fe concentrations was observed in the kidney, Cd depresses the absorption of Fe from the intestine and, in this way, affects the levels of Fe in particular tissues. This tendency could be expressed in terms of lower hemoglobin and hematocrit values because hematocrit is one of the most sensitive indicators of Cd intoxication. Zn concentrations are strongly associated with higher Cd levels in the kidney and liver. This is thought to be a reflection of the interaction known to occur between these two metals. Zn induction has been shown to antagonize a number of toxic effects of Cd. A positive correlation between Pb and Fe concentrations was detected in the livers at the Busan colony with relatively high Pb and Fe concentrations. Pb has been shown to co-accumulate with Fe in the liver by inhibiting the heme synthesis. Significant correlations, especially in toxic elements, Pb and Cd, were observed for many pairs of tissues. We suggest that these correlations between elements, and between tissues should be considered in biomonitoring for heavy metal pollution.

Two Novel Duck Antibacterial Peptides, Avian $\beta$-Defensins 9 and 10, with Antimicrobial Activity

  • Ma, Deying;Liao, Wenyan;Wang, Ruiqin;Han, Zongxi;Liu, Shengwang
    • Journal of Microbiology and Biotechnology
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    • v.19 no.11
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    • pp.1447-1455
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    • 2009
  • Two novel avian $\beta$-defensins (AvBDs) isolated from duck liver were characterized and their homologies with other AvBDs were analyzed. They were shown to be duck AvBD9 and AvBD10. The mRNA expression of the two genes was analyzed in 17 different tissues from 1-28-day-old ducks. AvBD9 was differentially expressed in the tissues, with especially high levels of expression in liver, kidney, crop, and trachea, whereas AvBD10 was only expressed in the liver and kidney of ducks at all the ages investigated. We produced and purified GST-tagged recombinant AvBD9 and AvBDI0 by expressing the two genes in Escherichia coli. Both recombinant proteins exhibited antimicrobial activity against several bacterial strains. The results revealed that both recombinant proteins retained their antimicrobial activities against Staphylococcus aureus under a range of different temperatures ($-70^{\circ}C-100^{\circ}C$) and pH values (pH 3-12).

First report of Aeromonas veronii infection in farmed Israeli carp Cyprinus carpio in Korea

  • Yu, Jin-Ha;Han, Jung-Jo;Kim, Hyoung-Jun;Kang, Sun-Gu;Park, Sung-Woo
    • Journal of fish pathology
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    • v.23 no.2
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    • pp.165-176
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    • 2010
  • In May 2007, mass mortality of Israeli carp, Cyprinus carpio L., was occured on a pond farm located in Jeollabukdo Province, Korea. The mortality rates reached up to 2% of the total fish in the farm per day. Typical clinical signs were abdominal distension, reddish foci on the skin, enteritis, liver congestion and enlarged spleen and kidney. On the basis of biochemical characteristics and 16S rDNA sequence, the causative bacteria isolated from affected carp were identified as Aeromonas veronii. Histologically, degeneration of hepatocytes and congestion in sinusoids were observed in the liver. Spleen showed hemorrhage and the destruction of the sheathed tissues. In kidney, necrotized renal tubules and glomerular destructions were observed. Intestinal tissues revealed necrotized and severe hemorrhage. Mass hemorrhage was observed in muscles. This is the first report that A. veronii caused mortality in cultured Israeli carp in Korea.

Dicyema sphyrocephalum (Phylum Dicyemida: Dicyemidae) isolated from Korean common octopus Callistoctopus minor in Korea

  • Whang, Ilson;Lee, Beomseok;Krishnan, Rahul;Nakajima, Hiroaki;Furuya, Hidetaka;Shin, Sang Phil
    • Journal of Veterinary Science
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    • v.21 no.6
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    • pp.86.1-86.8
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    • 2020
  • Background: Dicyemids are parasites found in the renal sac of cephalopods. The first species of dicyemid was found from kidneys of the Korean common octopus Callistoctopus minor. Objectives: This study aimed to identify the dicyemid and investigate the effect on renal sac of host. Methods: In this study, we compared the morphological characteristics of isolate to dicyemids (Dicyema sphyrocephalum, Dicyema clavatum, and Dicyema dolichocephalum) reported from C. minor in Japan. We compared the 18S ribosomal RNA (rDNA) and cytochrome c oxidase subunit I (COI) sequences of isolate to the sequences of D. shyrocephalum and D. clavatum. The infected octopuses renal tissues were histologically compared with the tissues of uninfected individuals. Results: The morphological characteristic of this isolated species corresponds to D. sphyrocephalum. The sequences similarities of 18S rDNA and COI gene of isolate are 99.7% and 98.1% with D. sphyrocephalum. We observed morphological changes in the epithelia folds of kidney at the dicyemids attached areas. Conclusions: The present study identified the isolate as D. sphyrocephalum and this is the first report of dicyemid species from Republic of Korea. Further studies on the effects of dicyemids on growth and health status of cephalopods will be needed.

A Study on the Concentrations of Cadmium and Metallothionein in the Tissues of Rats in Relation to the Duration of Pretreatment (전처치 기간에 따른 흰쥐의 조직내 카드뮴 및 metallothionein 생성에 관한 연구)

  • 김남송
    • Toxicological Research
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    • v.13 no.1_2
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    • pp.103-110
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    • 1997
  • This study was performed to investigate the effects of cadmium chloride on the acute and chronic toxicity on rats. Several toxic effects of cadmium has been shown following short-term and longterm pretreatment with cadmium and zinc. Four groups of rats (A, B, C, D), each consisting of 16 rats, were studied and each group was divided into four subgroups (1, 2, 3, 4), 4 rats for each subgroup. Rats were subcutaneously pretreated with $CdCl_2$ (0.5 mg/kg, A & C), and $ZnCl_2$ (13.0 mg/kg, B & D) during time periods of 1 weeks (group A & B) and 6 weeks (group C & D). At the end of the period, rats were challenged with $CdCl_2$ (3.0, 6.0 and 9.0 mg/kg, i.p.). After giving the challenge dose, cadmium and metallothionein(MT) concentrations were determined. The concentrations of cadmium were higher in the liver than the kidney irrelevantly to cadmium and zinc pretreatment and increased dose-dependently to the challenge dosage. The metallothioneins showed higher concentrations in the liver than the kidney following cadmium pretreatment and were higher in the long-term pretreatment groups than the short-term pretreatment groups in the liver and the kidney of rats. These data suggest that metallothioneins are induced preferentially in the liver by pretreatment of cadmium and then, formed in the form of Cd-MT, may play an important role in the nephrotoxicity.

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