scholarly journals Патоморфологічна характеристика коронавірусної інфекції в собак

2017 ◽  
Vol 19 (77) ◽  
pp. 7-10
Author(s):  
V. Lisova ◽  
O. Dubinenko
Keyword(s):  
Small Intestine ◽  
Lymph Nodes ◽  
Polymerase Chain Reaction Analysis ◽  
Underlying Disease ◽  
Left Ventricular ◽  
Morphological Features ◽  
Mesenteric Lymph Nodes ◽  
Regional Lymph Nodes ◽  
Coronavirus Infection ◽  
Pathological Material

The results of the study of the morphological features of pathological processes in organs and tissues of dogs with coronavirus infection. The study of cadavers (n = 3) dogs of different breeds and sex between the ages of 2 to 6 months, who died with diarrheal syndrome. Presence of coronavirus, without other assiociants, in these cases had previously been confirmed in the polymerase chain reaction analysis of fecal samples. At this stage, the main method of our study was mortem autopsy. At autopsy, which was carried out in partial evisceration, recorded and described the macroscopic changes identified in various tissues and organs of dead dogs and selected pathological material for subsequent histological examination. It is shown that the most pronounced lesions and typical change in all dead dogs fixed contact in the small intestine (jejunum and to the ileum) and the regional lymph nodes to it, as well as in the spleen. It is shown that the morphological manifestations of coronavirus infection in dogs following features are on the macroscopic level: the presence of exudative inflammation in the small intestine in the form serous-fibrinous jejuno-ileitis; hyperplasia and serous-hemorrhagic lymphadenitis mesenteric lymph nodes; multiple foci of hemorrhage of different character (spotted and striped) in the parenchyma of the spleen and serous membrane of the small intestine; dilatation of the right ventricle of the heart; cachexy and dehydration due to diarrheal syndrome. Also, non-specific, but constant morphological features, which arose as a result of circulatory disorders and heart failure were: passive venous congestion of the liver, kidney and pulmonary edema; degenerative processes in the liver. In one case, we identified morphological features characteristic of serous-inflammatory swelling of the pancreas and pathological changes in the myocardium that are typical of concentric hypertrophy of left ventricular heart. These pathological processes can be considered a complication that developed as a result of the underlying disease.

scholarly journals Гістологічні зміни в собак за коронавірусної інфекції

2017 ◽  
Vol 19 (78) ◽  
pp. 154-157 ◽  
Author(s):  
V. Lisova ◽  
O. Dubinenko
Keyword(s):  
Small Intestine ◽  
Lymph Nodes ◽  
Histological Study ◽  
Polymerase Chain Reaction Analysis ◽  
Histological Structure ◽  
Mesenteric Lymph Nodes ◽  
Regional Lymph Nodes ◽  
Liver And Kidney ◽  
Coronavirus Infection ◽  
Pathological Material

The article presents the results of the study of histological changes in organs and tissues of dogs for coronavirus infection. The histological study of the pathological material of cadavers (n =5) dogs of different breeds and sex between the ages of 2 to 6 months, who died with diarrheal syndrome. The study of presence of coronavirus, without other assiociants, in these cases had previously been confirmed in the polymerase chain reaction analysis of fecal samples. The made histological sections were stained with hematoxylin and eosin according to standard prescriptions. The general histological structure and microstructural changes in histological preparations were studied under a light microscope. Histological studies have been confirmed and supplemented with pathoanatomical diagnoses, established after autopsies of dead bodies of dead animals. The most pronounced lesions and typical change in all dead dogs fixed contact in the small intestine (jejunum and to the ileum) and the regional lymph nodes to it, as well as in the spleen. It is shown that the morphological manifestations of coronavirus infection in dogs following features are on the microscopic level: the presence of exudative inflammation in the small intestine in the form serous-fibrinous jejuno-ileitis; hyperplasia of single and congested lymphoid nodes of the mucous membrane of the small intestine; hyperplasia and serous-hemorrhagic lymphadenitis mesenteric lymph nodes; foci of hemorrhage and hemorrhagic heart attacks in the spleen parenchyma; hyperplasia lymphoid nodes of the spleen; foci of hemorrhage in the serous membrane of the small intestine. Also, non-specific, but constant morphological features, which arose as a result of circulatory disorders and heart failure were: passive venous congestion of the liver and kidney; degenerative processes in the liver and kidney parenchyma. Consequently, local and general immunological processes develop during the coronaviral infection. Therefore, additional diagnostic markers appear hyperplastic and inflammatory changes of regional seats to the reproduction of the virus lymphoid organs.

scholarly journals Патоморфологічна характеристика хламідіозу в котів

2017 ◽  
Vol 19 (77) ◽  
pp. 11-14
Author(s):  
V. Lisova ◽  
A. Savchenko
Keyword(s):  
Lymph Nodes ◽  
Chlamydial Infection ◽  
Historical Data ◽  
Underlying Disease ◽  
Regional Lymph Nodes ◽  
Laboratory Methods ◽  
Main Research ◽  
Pathological Material ◽  
The Right ◽  
Lymphoid Nodules

The results of the study of the morphological features of pathological processes in organs and tissues of dead cats from chlamydial infection. A study of cadavers (n = 8), cats of different breeds aged from 3 to 6 years old, who lives with the laboratory methods have been diagnosed and identified the pathogen Chlamydia felis. According to historical data from sick animals were recorded various nature and degree of conjunctivitis and pronounced signs of a lesion of the respiratory tract (rhinitis, bronchitis, pneumonia). The main research method was mortem examination, during which the fixed and described the macroscopic changes in the affected organs and tissues. The autopsy was carried out partial evisceration, while selected pathological material for further histological studies. It is shown that the most pronounced damage and characteristic macroscopic changes all dead cats fixed contact in lung tissues and regional lymph nodes (mediastinal and bronchial), and in the spleen. Macroscopic picture of lungs affected varied somewhat depending on the degree of damage and stages of morphogenesis. In most cases (n = 6) lesions in the lungs looked like multiple well-defined lesions that are localized in all lobes of the lungs. Morphological manifestations of chlamydial infection in the investigated dead cats on the macroscopic level following features are: 1) productive inflammation in the lungs in a subtotal and total interstitial pneumonia and pulmonary fibrosis; 2) catarrhal bronchitis; 3) hyperplasia and serous lymphadenitis of the mediastinal and bronchial lymph nodes; 4) hyperplasia of lymphoid nodules of the spleen; 5) serous conjunctivitis. Also, a disease accompanied by nonspecific general pathological processes, such as: passive venous congestion of the liver and kidneys; degenerative changes in the liver; dilation of the right ventricle of the heart, which occurs as a complication of the underlying disease. While studies of other organs and tissues of dead animals we have not found any macroscopic changes.

scholarly journals Pathomorphological diagnostics of enteritis of viral etiology in dogs

2018 ◽  
Vol 20 (83) ◽  
pp. 299-303 ◽  
Author(s):  
V. Lisova ◽  
N. Radsikhovskii
Keyword(s):  
Small Intestine ◽  
Mucous Membrane ◽  
Lymphoid Tissue ◽  
Histological Structure ◽  
Regional Lymph Nodes ◽  
Mesenteric Lymphadenitis ◽  
Morphological Criteria ◽  
Liver And Kidney ◽  
Coronavirus Infection ◽  
Pathological Material

The article presents the results of the study of pathomorphological changes in organs and tissues of dogs at parvovirus and coronavirus infections. The pathoanatomical section and histological examination of pathological material selected from cadavers of dogs of different breeds and sex between 2 to 6 months who died with signs of infectious diarrhea were conducted. Pathomorphological study was performed only on cadavers of animals in which the life using PCR in stool specimens was established clinical diagnosis – parvovirus enteritis (n = 13) and coronavirus enteritis (n = 7). After selection of the pathological material, it was immediately fixed in a 10% aqueous solution of neutral formalin followed by pouring into a sealing medium (paraffin). The obtained histological sections were stained with hematoxylin and eosin according to standard prescriptions. The general histological structure and microstructural changes in histological preparations were studied under a light microscope. Histological studies have been confirmed and supplemented with pathoanatomical diagnoses, established after autopsies of bodies of dead animals. The most pronounced lesions and typical change in all dead dogs fixed contact in the small intestine (jejunum and to the ileum) and the regional lymph nodes. In addition, in the case of coronavirus infection, changes in the spleen are detected. According to the results of our study, the morphological criteria, on which the pathomorphological diagnosis of parvovirus infection in dogs is based include: hemorrhagic jejuno-ileitis; hemorrhage in the serous and mucous membrane of the small intestine; hemorrhagic mesenteric lymphadenitis; depletion and necrosis of lymphoid tissue. It is shown that the morphological manifestations of coronavirus infection in the dead dogs are with the following signs: the presence of exudative inflammation in the small intestine in the form serous-catarrhal or serous-fibrinous jejuno-ileitis; hyperplasia of single and congested lymphoid nodes of the mucous membrane of the small intestine; hyperplasia and serous-hemorrhagic mesenteric lymphadenitis; hemorrhagic infarcts in the spleen parenchyma; hyperplasia of lymphoid tissue; hemorrhage in the serous membrane of the small intestine; dehydration. Not typical, but constant morphological signs of enteritis, which arose as a result of circulatory disorders and heart failure were: passive venous congestion of the liver and kidney; degenerative processes in the liver and kidney parenchyma; pulmonary edema.

In situ demonstration of migration of dendritic cells released from rat small intestine to mesenteric lymph nodes

2001 ◽  
Vol 120 (5) ◽  
pp. A183-A183
Author(s):  
H KOBAYASHI ◽  
H NAGATA ◽  
S MIURA ◽  
T AZUMA ◽  
H SUZUKI ◽  
...  
Keyword(s):  
Dendritic Cells ◽  
Small Intestine ◽  
Lymph Nodes ◽  
Rat Small Intestine ◽  
Mesenteric Lymph Nodes ◽  
Mesenteric Lymph

scholarly journals Culture-Independent Analysis of Indomethacin-Induced Alterations in the Rat Gastrointestinal Microbiota

2006 ◽  
Vol 72 (10) ◽  
pp. 6707-6715 ◽  
Author(s):  
Andrew B. Dalby ◽  
Daniel N. Frank ◽  
Allison L. St. Amand ◽  
Alison M. Bendele ◽  
Norman R. Pace
Keyword(s):  
Small Intestine ◽  
Lymph Nodes ◽  
Small Subunit ◽  
Rrna Genes ◽  
Small Subunit Rrna ◽  
Mesenteric Lymph Nodes ◽  
Gastrointestinal Microbiota ◽  
Mesenteric Lymph ◽  
Independent Analysis ◽  
Culture Independent

ABSTRACT Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly prescribed for a variety of inflammatory conditions; however, the benefits of this class of drugs are accompanied by deleterious side effects, most commonly gastric irritation and ulceration. NSAID-induced ulceration is thought to be exacerbated by intestinal microbiota, but previous studies have not identified specific microbes that contribute to these adverse effects. In this study, we conducted a culture-independent analysis of ∼1,400 bacterial small-subunit rRNA genes associated with the small intestines and mesenteric lymph nodes of rats treated with the NSAID indomethacin. This is the first molecular analysis of the microbiota of the rat small intestine. A comparison of clone libraries and species-specific quantitative PCR results from rats treated with indomethacin and untreated rats revealed that organisms closely related to Enterococcus faecalis were heavily enriched in the small intestine and mesenteric lymph nodes of the treated rats. These data suggest that treatment of NSAID-induced ulceration may be facilitated by addressing the microbiological imbalances.

scholarly journals INTRACELLULAR LOCALIZATION AND QUANTITATION OF TRITIATED ANTIGENS IN RETICULOENDOTHELIAL TISSUES OF MICE DURING SECONDARY AND HYPERIMMUNE RESPONSES

1962 ◽  
Vol 116 (4) ◽  
pp. 407-422 ◽  
Author(s):  
Audrey N. Roberts ◽  
Felix Haurowitz
Keyword(s):  
Lymph Nodes ◽  
Tissue Section ◽  
Intracellular Localization ◽  
Scintillation Counter ◽  
Secondary Response ◽  
Mesenteric Lymph Nodes ◽  
Regional Lymph Nodes ◽  
Section Surface ◽  
Regional Node ◽  
Foot Pad

Autoradiography and quantitative radiochemical techniques have been used to determine intracellular localization of tritium and the quantity of tissue-bound tritium, respectively, following injections of H3-aniline azo PGG or H3-arsanilazo PGG to yield hyperimmune or secondary response stimulation in mice. Autoradiography revealed intracytoplasmic localization of grains in macrophages of spleen and lung sections, and in Kupffer cells of liver sections following intravenous and subcutaneous injections of H3-aniline azo PGG. Quantitation of tissue section surface radioactivities in the windowless flow counter and scintillation counter, and of dissolved tissue section activities in the scintillation counter, showed that greatest radioactivity was present in lung tissue, with less in spleen, liver, and mesenteric lymph nodes from these hyperimmunized mice. Autoradiographic studies on tissue sections from mice in secondary response stimulation after subcutaneous foot-pad injections of H3-arsanilazo PGG, showed intracellular and extracellular grains over regional popliteal node sections, with intracytoplasmic grain localization over macrophages and pyroninophilic plasmacytes. Scattered macrophages in spleen and lung sections also contained intracytoplasmic radioactivity. Clusters of antibody-synthesizing cells in the regional lymph nodes were demonstrated with fluorescence microscopy, and these cells were compared to similar cells possessing radioactivity as observed in the section autoradiographs. An occasional Russell body plasma cell containing specific antibody was observed in splenic impressions. Windowless flow counting showed that greatest radioactivity was in regional node sections, with less in spleen and lung, and none in contralateral lymph nodes. A quantitative comparison between windowless flow counting and autoradiography revealed that 20 counts were required to yield one silver grain.

Rotavirus A associated pathology of intestine and mesenteric lymph nodes and occurrence in bovine calves of Gwalior and Bareilly regions

2018 ◽  
Author(s):  
Gayatri Kashyap ◽  
R. Singh ◽  
Y. S. Malik ◽  
R. K. Agrawal ◽  
K. P. Singh ◽  
...  
Keyword(s):  
Small Intestine ◽  
Lymph Nodes ◽  
Mononuclear Cells ◽  
Dairy Farm ◽  
Rt Pcr ◽  
Mesenteric Lymph Nodes ◽  
Fecal Samples ◽  
Rotavirus A ◽  
Mesenteric Lymph ◽  
Vp6 Gene

To understand the pathology of natural cases of rotavirus (RVA) in bovine calves, a total of 40 cases below 6 months died due to diarrhoea were studied, out of which 7 cases (17.5%) turned positive for RVA by RT-PCR. Histopathology of small intestine showed loss of villous enterocytes, blunting and fusion of villi, elongation of crypts and mononuclear cells infiltration in the lamina-propria. The mesenteric lymph nodes were severely depleted of lymphocytes. These changes were corroborated with presence of RVA antigen in sections by dFAT and nucleic acid by RT-PCR. The fluorescent signals were more in mesenteric lymph nodes than in intestine. Besides, 115 rectal fecal samples were also collected from calves for RVA detection by RT-PCR using VP6 gene specific sets of primers. Dead carcasses of calves (n= 40) belonged to organized dairy farm of Bareilly, while rectal fecal samples belonged to both organized (n= 38) and unorganized farms (n= 77) of Bareilly and Gwalior. The overall occurrence of RVA was 19.3% (30/155), comprising 5/37 cases (13.5%) from Gwalior (MP) and 25/118 cases (21.1%) from Bareilly (UP). These findings suggest the infection of RVA widely prevalent in calves and have potential to escape from the intestinal site to mesenteric lymph nodes.

Systemic bacterial invasion induced by sleep deprivation

2000 ◽  
Vol 278 (4) ◽  
pp. R905-R916 ◽  
Author(s):  
Carol A. Everson ◽  
Linda A. Toth
Keyword(s):  
Sleep Deprivation ◽  
Lymph Nodes ◽  
Time Course ◽  
Negative Energy ◽  
Bacterial Invasion ◽  
Mesenteric Lymph Nodes ◽  
Regional Lymph Nodes ◽  
Body Tissues ◽  
Bacterial Migration ◽  
Underlying Mechanisms

Profound sleep disruption in humans is generally believed to cause health impairments. Through comparative research, specific physical effects and underlying mechanisms altered by sleep deprivation are being elucidated. Studies of sleep-deprived animals previously have shown a progressive, chronic negative energy balance and gradual deterioration of health, which culminate in fatal bloodstream infection without an infectious focus. The present study investigated the conditions antecedent to advanced morbidity in sleep-deprived rats by determining the time course and distribution of live microorganisms in body tissues that are normally sterile. The tissues cultured for microbial growth included the blood, four major organs, six regional lymph nodes, the intestine, and the skin. The principal finding was early infection of the mesenteric lymph nodes by bacteria presumably translocated from the intestine and bacterial migration to and transient infection of extraintestinal sites. Presence of pathogenic microorganisms and their toxins in tissues constitutes a septic burden and chronic antigenic challenge for the host. Bacterial translocation and pathogenic sequelae provide mechanisms by which sleep deprivation appears to adversely affect health.

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