scholarly journals CCR7-dependent trafficking of RORγ+ ILCs creates a unique microenvironment within mucosal draining lymph nodes

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Emma C. Mackley ◽  
Stephanie Houston ◽  
Clare L. Marriott ◽  
Emily E. Halford ◽  
Beth Lucas ◽  
...  
Keyword(s):  
Lymph Nodes ◽  
Lymphoid Cells ◽  
Intestinal Cells ◽  
Lymphoid Tissues ◽  
Mesenteric Lymph Nodes ◽  
Cell Responses ◽  
Mesenteric Lymph ◽  
Peripheral Lymph ◽  
Group 3 ◽  
Draining Lymph Nodes

Abstract Presentation of peptide:MHCII by RORγ-expressing group 3 innate lymphoid cells (ILC3s), which are enriched within gut tissue, is required for control of CD4 T-cell responses to commensal bacteria. It is not known whether ILC populations migrate from their mucosal and peripheral sites to local draining secondary lymphoid tissues. Here we demonstrate that ILC3s reside within the interfollicular areas of mucosal draining lymph nodes, forming a distinct microenvironment not observed in peripheral lymph nodes. By photoconverting intestinal cells in Kaede mice we reveal constitutive trafficking of ILCs from the intestine to the draining mesenteric lymph nodes, which specifically for the LTi-like ILC3s was CCR7-dependent. Thus, ILC populations traffic to draining lymph nodes using different mechanisms.

Early lymphocytic responses to Heligmosomoides polygyrus infections in mice

1990 ◽  
Vol 64 (1) ◽  
pp. 35-45 ◽  
Author(s):  
S. J. Parker ◽  
C. J. Inchley
Keyword(s):  
Lymph Nodes ◽  
Lymphoid Tissues ◽  
Mesenteric Lymph Nodes ◽  
Heligmosomoides Polygyrus ◽  
Intestinal Nematode ◽  
Mesenteric Lymph ◽  
Low Responder ◽  
Proliferating Cell ◽  
Draining Lymph Nodes

ABSTRACTResponses to parasite antigens were studied in three strains of mice, BALB/c, CBA and NIH, during the initial phases of a primary infection with the intestinal nematode Heligmosomoides polygyrus. Changes in the rate of in vivo cell division were analysed in mesenteric lymph nodes and spleens during the phases of larval maturation and adult establishment, and related to changes in organ size and cellularity. The nature of the proliferating cell populations was also investigated by flow cytometry, carried out on cell suspensions prepared at the time when larval development was complete. The variation in the ability of the strains of mice to become resistant to a challenge infection was manifest as only slight differences in their initial responses to infection. All three strains showed an increase in 125I-iododeoxyuridine incorporation in their mesenteric lymph nodes and spleen, and an increase in B cell frequency over that of T cells in the draining lymph nodes. Although lymph node weight in NIH mice continued to rise over a 4 week period, the majority of responses measured were short lived, peaking 10 to 14 days after infection. The low responder status of CBA mice was thus reflected in a transient and relatively small enlargement of lymphoid tissues, but their early proliferative responses to antigen were similar in scale to those of responder strains.

scholarly journals Quantitative analysis of total macrophage content in adult mouse tissues. Immunochemical studies with monoclonal antibody F4/80.

1985 ◽  
Vol 161 (3) ◽  
pp. 475-489 ◽  
Author(s):  
S H Lee ◽  
P M Starkey ◽  
S Gordon
Keyword(s):  
Bone Marrow ◽  
Small Bowel ◽  
Lymph Nodes ◽  
Large Bowel ◽  
Adult Mouse ◽  
Specific Antigen ◽  
Lymphoid Tissues ◽  
Mesenteric Lymph Nodes ◽  
Mesenteric Lymph ◽  
Mouse Tissues

We have estimated the macrophage content of different tissues of the normal adult mouse using F4/80, a highly specific antigen marker for mature mouse macrophages. An absorption indirect binding assay was used to quantitate F4/80 antigen against a calibration standard made from the J774.2 macrophage-like cell line. The richest sources of tissue F4/80 antigen were found to be bone marrow, spleen, cervical and mesenteric lymph nodes, large bowel, liver, kidneys, and small bowel. The organs that have the highest total F4/80 antigen content are the liver, large bowel, small bowel, bone marrow, spleen, cervical and mesenteric lymph nodes, and kidney. We conclude that the mononuclear phagocyte system is mainly distributed in the gastrointestinal tract and liver, followed by hemopoietic and lymphoid tissues.

The structure of the thymus and mesenteric lymph nodes of newborn rats as a result of the prenatal influence of ethanol

2015 ◽  
Vol 6 (4) ◽  
pp. 51-55 ◽  
Author(s):  
Petr Vladimirovich Pugach ◽  
Sergey Vladimirovich Kruglov ◽  
Natalia Rafailovna Karelina ◽  
Dmitriy Vitalievich Breusenko ◽  
Stepan Yurevich Bazhin ◽  
...  
Keyword(s):  
Lymph Nodes ◽  
Morphological Changes ◽  
Alcohol Intoxication ◽  
Sole Source ◽  
Structural Features ◽  
Lymphoid Cells ◽  
Newborn Rats ◽  
Mesenteric Lymph Nodes ◽  
White Rats ◽  
Mesenteric Lymph

The present study was undertaken to examine the structural features of the thymus and cranial mesenteric lymph nodes of newborn rats that have occurred as a result of antenatal alcohol intoxication. We used a set of morphometric, anatomical and histological methods. A study of the cranial mesenteric lymph nodes performed on 45 newborn rats born to 18 female mongrel white rats seven months of age. The studies were conducted in compliance with the order of the Ministry of Health of the USSR N 755 from 12.08.1977 and the order of the Ministry of Higher and Secondary Special Education of the USSR from 13.11.1984, "On the rules of work with experimental animals". Females, on which was received investigated offspring exposed to 15 % ethanol as the sole source of fluid for 1 week, one and three months before pregnancy, during pregnancy and after its completion. It is shown that depending on the duration of pregravid exposure to ethanol occur progredient changes in the structure of the thymus and cranial mesenteric lymph nodes. In the thymus, as well as in the lymph nodes, decreases the number of lymphoid cells and stromal elements content increases. In lymph nodes there are significant changes in the structure of the sinus system. The severity of the identified morphological changes due to the duration of the effects of alcohol on the system "mother-placenta-fetus”.

scholarly journals Fulminant Liver Failure with Necrotizing Foci in the Liver, Spleen and Lymph Nodes in Celiac Disease Due to Malignant Lymphoma

1996 ◽  
Vol 10 (4) ◽  
pp. 225-229 ◽  
Author(s):  
Hugh James Freeman
Keyword(s):  
Celiac Disease ◽  
T Cell ◽  
Lymph Nodes ◽  
Liver Failure ◽  
Cell Receptor ◽  
Lymphoid Cells ◽  
Mesenteric Lymph Nodes ◽  
Rare Type ◽  
Mesenteric Lymph ◽  
Spleen And Lymph Nodes

A 65-year-old female with celiac disease developed cholestatic jaundice and fatal liver failure. Investigations revealed widespread necrotic foci in the liver, spleen and mesenteric lymph nodes, changes reminiscent of the mesenteric lymph node cavitation syndrome, which is known to complicate celiac disease. In addition, malignant lymphoid cells were present infiltrating hepatic sinusoids, lymph nodes and spleen. These features are typical of hepatosplenic lymphoma, a rare type of peripheral T cell lymphoma with T cell receptor rearrangement. Lymphorecticular malignancy complicating celiac disease may present with fulminant liver disease.

scholarly journals Salmonella TyphimuriumInfection Along the Porcine Gastrointestinal Tract and Associated Lymphoid Tissues

2019 ◽  
Vol 56 (5) ◽  
pp. 681-690 ◽  
Author(s):  
Natividad Bellido-Carreras ◽  
Héctor Argüello ◽  
Sara Zaldívar-López ◽  
Ángeles Jiménez-Marín ◽  
Rodrigo P. Martins ◽  
...  
Keyword(s):  
Lymph Nodes ◽  
Control Strategies ◽  
Foodborne Pathogen ◽  
Early Time ◽  
Effective Control ◽  
Lymphoid Tissues ◽  
Polymorphonuclear Cells ◽  
Mesenteric Lymph Nodes ◽  
Time Points ◽  
Mesenteric Lymph

Salmonella is a major foodborne pathogen and pork is one of the main sources of human salmonellosis. Understanding the pathogenesis and progression of the infection within the host is of interest to establish potential approaches to control the disease in pigs. The present study evaluates factors such as intestinal colonization, fecal shedding, and pathogen persistence by 2 studies using experimental challenge with Salmonella Typhimurium in weaned pigs and euthanasia at different time points (1, 2, and 6 and 2, 14, and 30 days postinfection [dpi], respectively). Histopathology of intestine at early time points (1 dpi and 2 dpi) showed severe damage to the epithelium together with an increase in polymorphonuclear cells and macrophages ( P < .001), particularly in jejunum and ileum. Large quantities of Salmonella were detected within the contents of the ileum, cecum, and colon in early infection. Salmonella could also be observed in the medulla of tonsils and mesenteric lymph nodes. From 6 dpi onward, signs of recovery were observed, with progressive restoration of the epithelium, reduction of the inflammatory infiltrate, and elimination of Salmonella from the mucosa. Concentration of Salmonella in feces and ileum content decreased, but shedding did not cease even at 4 weeks after infection. Persistence of the bacteria in mesenteric lymph nodes was identified within the connective tissue at 14 and 30 dpi. Our results demonstrate a recovery of the disease after an initial acute phase but also show persistence within the lumen and surrounding lymphoid tissue. These findings are relevant to developing effective control strategies.

scholarly journals Intracellular localization and properties of phosphate-dependent glutaminase in rat mesenteric lymph nodes

1984 ◽  
Vol 217 (1) ◽  
pp. 289-296 ◽  
Author(s):  
M S M Ardawi ◽  
E A Newsholme
Keyword(s):  
Bone Marrow ◽  
Lymph Nodes ◽  
Intracellular Localization ◽  
Lymphoid Tissues ◽  
Mesenteric Lymph Nodes ◽  
Ph Optimum ◽  
Mesenteric Lymph ◽  
Phosphorylated Compounds ◽  
Glutaminase Activity

Phosphate-dependent glutaminase was present at approximately similar activities in lymph nodes from mammals other than rat, and in thymus, spleen, Peyer's patches and bone marrow of the rat. This suggests that glutamine is important in all lymphoid tissues. Phosphate-dependent glutaminase activity was shown to be present primarily in the mitochondria of rat mesenteric lymph nodes, and most of the activity could be released by detergents. The properties of the enzyme in mitochondrial extracts were investigated. The pH optimum was 8.6 and the Km for glutamine was 2.0 mM. The enzyme was activated by phosphate, other phosphorylated compounds including phosphoenolpyruvate, and also leucine: 50% activation occurred at 5, 0.2 and 0.6 mM for phosphate, phosphoenolpyruvate and leucine respectively. The enzyme was inhibited by glutamate, 2-oxoglutarate, citrate and ammonia, and by N-ethylmaleimide and diazo-5-oxo-L-norleucine; 50% inhibition was observed at 0.7 and 0.1 mM for glutamate and 2-oxoglutarate respectively. Some of these properties may be important in the control of the enzyme activity in vivo.

scholarly journals Detection of Visna Maedi virus in mesenteric lymph nodes and in other lymphoid tissues of sheep three years after respiratory infection

2013 ◽  
Vol 58 (No. 7) ◽  
pp. 359-363 ◽  
Author(s):  
S. Preziuso ◽  
GE Magi ◽  
S. Mari ◽  
G. Renzoni
Keyword(s):  
Lymph Node ◽  
Lymph Nodes ◽  
Infected Sheep ◽  
Viral Capsid ◽  
Lymphoid Tissues ◽  
Viral Capsid Antigen ◽  
Mesenteric Lymph Nodes ◽  
Proviral Dna ◽  
Mesenteric Lymph ◽  
Target Organs

Visna/Maedi virus (VMV), a small ruminant lentivirus responsible for lymphoproliferative pneumonia, encephalitis, arthritis and/or mastitis in sheep, has been detected in different non-lymphoid organs. However, only a few investigations have been carried out in lymphoid tissues. In this study, some lymphoid tissues and lymph node draining or non-draining VMV target organs from five sheep infected experimentally by the respiratory route three years previously were investigated. Archival samples of spleen, red bone marrow, caudal mediastinal lymph nodes, mammary lymph nodes, popliteal lymph nodes and mesenteric lymph nodes were tested by PCR for the presence of proviral DNA. Popliteal and mesenteric lymph node samples were tested also by immunohistochemical staining of the viral capsid antigen p28. The proviral DNA was detected by PCR in all the lymphoid tissue samples from the infected sheep. The viral antigen was stained in mononuclear cells in popliteal and mesenteric lymph nodes of the infected sheep. Although the lymph nodes draining the classical target organs seem to be more infected than the others, both the viral capsid antigen and the proviral DNA were present also in lymph nodes draining non-target organs, such as the mesenteric lymph nodes. These findings show the presence of VMV in different lymphoid tissues in the late stages of infection and suggest a potential role of these tissues as a site for viral reservoir and replication, even three years after infection. &nbsp;

Protoplasmic fragments in haematopoietic tissues and analysis of intranuclear vesicles in lymph node blast cells of the rabbit

1970 ◽  
Vol 48 (4) ◽  
pp. 709-716 ◽  
Author(s):  
Jean E. Mills Westermann ◽  
Jessica L. G. Shelley ◽  
Vibeke E. Engelbert
Keyword(s):  
Lymph Node ◽  
Lymph Nodes ◽  
Cell Formation ◽  
Lymphoid Cells ◽  
Mesenteric Lymph Nodes ◽  
Mesenteric Lymph ◽  
Blood Smears ◽  
Blast Cells

Vesicles and cytoplasmic fragments are found in greatest numbers in the lymph node and spleen and least commonly in the thymus and bone narrow in the rabbit. Vesicles appear to originate by the extrusion of intranuclear and intracytoplasmic vesicles mostly from cells of the lymphoid series. Cytoplasmic fragments formed by the pinching off of cytoplasmic buds of blast and lymphoid cells may be either round, oval, or irregular in shape. Vesicles and cytoplasmic fragments are absent from blood smears and extremely difficult to recognize in sections or in areas of imprints where the cells are closely applied one to another. About one-third of all round to oval "naked" blast cells in imprints of mesenteric lymph nodes contain vesicles ranging to 7 μ in diameter although most are about 1 μ in diameter. Large "naked" nuclei contain more vesicles than expected although the size of the nucleus does not affect the size of the vesicles present. We suggest that chromatin from "naked" nuclei and smaller free chromatin masses may become transferred to free vesicles and this process may function in new cell formation.

Sign in / Sign up

Export Citation Format

Share Document