scholarly journals Intracellular heavy metal nanoparticle storage: progressive accumulation within lymph nodes with transformation from chronic inflammation to malignancy

2010 ◽  
pp. 955 ◽  
Author(s):  
Iannitti ◽  
B. Palmieri ◽  
Capone ◽  
Gatti AM ◽  
Cetta F
Keyword(s):  
Heavy Metal ◽  
Lymph Nodes ◽  
Chronic Inflammation ◽  
Metal Nanoparticle ◽  
Progressive Accumulation

scholarly journals CLEC-2 promotes inflammatory peritoneal macrophage emigration to draining lymph nodes during endotoxemia

2020 ◽  
Author(s):  
Joshua H. Bourne ◽  
Nonantzin Beristain-Covarrubias ◽  
Malou Zuidscheroude ◽  
Joana Campos ◽  
Ying Di ◽  
...  
Keyword(s):  
Inflammatory Response ◽  
Lymph Nodes ◽  
Chronic Inflammation ◽  
Peritoneal Macrophages ◽  
Sterile Inflammation ◽  
Mesenteric Lymph Nodes ◽  
Specific Strategy ◽  
Inflammatory Macrophages ◽  
Draining Lymph Nodes ◽  
Macrophage Accumulation

AbstractMacrophage recruitment during sterile inflammation and infection is essential to clear pathogens, apoptotic cells and debris. However, persistent macrophage accumulation leads to chronic inflammation. Platelets are emerging as key modulators of the inflammatory response. Here, we identify that platelet C-type-lectin-like receptor-2 (CLEC-2) is a crucial immunomodulatory receptor through the interaction with podoplanin, upregulated on inflammatory macrophages.Mechanistically, platelet CLEC-2 upregulates the expression of podoplanin and its co-ligands CD44 and ERM proteins, leading to actin rearrangement and promotion of cell migration; this is mimicked by recombinant CLEC-2-Fc (rCLEC-2-Fc). Treatment of LPS-challenged mice with rCLEC-2-Fc induces a rapid emigration of peritoneal macrophages to mesenteric lymph nodes, through a gradient generated by the podoplanin ligand, CCL21, to prime T cells. We propose that crosslinking podoplanin using rCLEC-2-Fc is a novel, cell-specific strategy to accelerate macrophage removal from the site of inflammation, and hence promote the resolution of the inflammatory response.Visual AbstractSummaryPersistent macrophage accumulation in inflamed tissue leads to chronic inflammation and organ damage. Bourne et al. identify recombinant CLEC-2-Fc crosslinking podoplanin on inflammatory macrophages, as a cell-specific strategy to accelerate their emigration to draining lymph nodes, and reduce local inflammation.

scholarly journals Congenital Tuberculosis

2014 ◽  
Vol 34 (2) ◽  
pp. 144-146
Author(s):  
Nandita Chatterjee
Keyword(s):  
Pulmonary Tuberculosis ◽  
Lymph Nodes ◽  
Ct Scan ◽  
Chronic Inflammation ◽  
Congenital Tuberculosis ◽  
Caries Spine

2 month old baby presented with huge hepato-splenomegaly, ascites & pallor, , born to a mother suffering from fever and backache since last 4 months. Hypo-echoic shadows in liver, spleen and abdominal lymph nodes on USG & CT-scan and acute-on-chronic inflammation of liver by FNAC suggested Congenital Tuberculosis. Investigations in mother revealed Pulmonary Tuberculosis & Caries Spine, confirming the diagnosis of Congenital Tuberculosis in the baby. DOI: http://dx.doi.org/10.3126/jnps.v34i2.10910 J Nepal Paediatr Soc 2014;34(2):144-146 

Duct Ectasia

2018 ◽  
Author(s):  
Nicole S. Winkler
Keyword(s):  
Lymph Nodes ◽  
Chronic Inflammation ◽  
Clinical Features ◽  
Nipple Discharge ◽  
Screening Mammography ◽  
Differential Diagnoses ◽  
Sonographic Evaluation ◽  
Imaging Protocols ◽  
Management Recommendations

Duct ectasia is a term used to describe benign dilation of fluid-filled mammary ducts. Duct ectasia is characterized by tubular fluid-filled structures >2 mm in diameter that are commonly bilateral and subareolar in location. Ductal dilation is due to weakened wall elasticity that occurs with age. The ducts fill with secretions that may result in intermittent nipple discharge or chronic inflammation. When duct ectasia involves multiple ducts bilaterally, it can be dismissed on screening mammography; however, a solitary dilated duct should be further evaluated, given the potential for associated non-calcified DCIS. This chapter, appearing in the section on nipple, skin, and lymph nodes, reviews the key imaging and clinical features, imaging protocols and pitfalls, differential diagnoses, and management recommendations for duct ectasia. Topics discussed include solitary dilated duct, nipple discharge, and sonographic evaluation of ducts.

scholarly journals Felinosis: the elusive-cat scratch disease

2019 ◽  
Vol 5 (2) ◽  
pp. 511
Author(s):  
S. Arulmozhi ◽  
Sithananda Kumar ◽  
Shilpa Divakaran ◽  
Susy Sophia Kurian ◽  
Mary Kurien
Keyword(s):  
Lymph Nodes ◽  
Children And Adolescents ◽  
Chronic Inflammation ◽  
Male Patient ◽  
Bartonella Henselae ◽  
Clinical Manifestations ◽  
Axillary Lymph Nodes ◽  
Axillary Lymph ◽  
Cat Scratch Disease ◽  
Suppurative Lymphadenitis

<p class="abstract">Cat-scratch disease or felinosis is an infection caused by <em>Bartonella henselae</em> which is characterized by chronic inflammation of the lymph nodes. It is one of the causes of regional, unilateral adenitis in children and adolescents. Axillary lymph nodes followed by cervical, pre-auricular and submandibular lymph nodes are the most common sites of involvement. We report a 14 year old male patient with cat scratch disease in whom the initial clinical manifestations were indistinguishable from those of acute bacterial suppurative lymphadenitis.</p>

Heavy metal resistance in algae and its application for metal nanoparticle synthesis

2019 ◽  
Vol 103 (8) ◽  
pp. 3297-3316 ◽  
Author(s):  
Eepsita Priyadarshini ◽  
Sushree Sangita Priyadarshini ◽  
Nilotpala Pradhan
Keyword(s):  
Heavy Metal ◽  
Nanoparticle Synthesis ◽  
Heavy Metal Resistance ◽  
Metal Resistance ◽  
Metal Nanoparticle

Scanning electron microscopy of freeze-fractured prescapular lymph node of caprine

1984 ◽  
Vol 42 ◽  
pp. 244-245
Author(s):  
O. Faroon ◽  
F. Al-Bagdadi ◽  
T. G. Snider ◽  
C. Titkemeyer
Keyword(s):  
Lymph Node ◽  
Lymph Nodes ◽  
Lymphatic System ◽  
Three Dimensional ◽  
Meat Products ◽  
The Body ◽  
Morphological Data ◽  
The World ◽  
Cellular Constituent ◽  
Scanning Electron

The lymphatic system is very important in the immunological activities of the body. Clinicians confirm the diagnosis of infectious diseases by palpating the involved cutaneous lymph node for changes in size, heat, and consistency. Clinical pathologists diagnose systemic diseases through biopsies of superficial lymph nodes. In many parts of the world the goat is considered as an important source of milk and meat products.The lymphatic system has been studied extensively. These studies lack precise information on the natural morphology of the lymph nodes and their vascular and cellular constituent. This is due to using improper technique for such studies. A few studies used the SEM, conducted by cutting the lymph node with a blade. The morphological data collected by this method are artificial and do not reflect the normal three dimensional surface of the examined area of the lymph node. SEM has been used to study the lymph vessels and lymph nodes of different animals. No information on the cutaneous lymph nodes of the goat has ever been collected using the scanning electron microscope.

Microvasculature and structure of hemal lymph nodes in the wall of the rabbit bladder: a vascular corrosion casting and EM study

1995 ◽  
Vol 53 ◽  
pp. 1074-1075
Author(s):  
F.E. Hossler ◽  
M.I. McKamey ◽  
F.C. Monson
Keyword(s):  
Lymph Nodes ◽  
Light Microscopy ◽  
Corrosion Casting ◽  
Fixed Tissue ◽  
Infusion Pressure ◽  
India Ink ◽  
Cacodylate Buffer ◽  
Rabbit Bladder ◽  
Lateral Walls ◽  
Comprehensive Study

A comprehensive study of the microvasculature of the normal rabbit bladder, revealed unusual "capillary glomeruli" along the lateral walls. Here they are characterized as hemal lymph nodes using light microscopy, SEM, TEM, ink injection, and vascular casting.Bladders were perfused via a cannula placed in the abdominal aorta with either 2% glutaraldehyde in 0.1M cacodylate buffer (pH 7.4) for fixation, 10% India ink in 0.9% saline and 0.1M phosphate (pH 7.4) for vessel tracing, or resin (Mercoximethylmethacrylate: catalyst, 4:1:0.3; Ladd Research Industries) for vascular corrosion casting. Infusion pressure was 100mm Hg. Fixed tissue was sectioned from epon-araldyte resin, and stained with toluidine blue for light microscopy, and lead and uranium for TEM. Ink injected tissue was photographed directly from saline-filled bladders illuminated from below. Resin-filled tissue was macerated in 5% KOH and distilled water. Casts were critical point dried, sputter coated with goldpalladium, and examined by routine SEM at 10 KV.

Complementary Z-Contrast Imaging and Digital Image Processing

1985 ◽  
Vol 43 ◽  
pp. 304-305
Author(s):  
K. N. Colonna ◽  
G. Oliphant
Keyword(s):  
Image Processing ◽  
Heavy Metal ◽  
Digital Image Processing ◽  
Digital Image ◽  
Biological Tissue ◽  
Biological Imaging ◽  
Tissue Preparation ◽  
Contrast Imaging ◽  
Imaging Tool ◽  
Z Contrast

Harmonious use of Z-contrast imaging and digital image processing as an analytical imaging tool was developed and demonstrated in studying the elemental constitution of human and maturing rabbit spermatozoa. Due to its analog origin (Fig. 1), the Z-contrast image offers information unique to the science of biological imaging. Despite the information and distinct advantages it offers, the potential of Z-contrast imaging is extremely limited without the application of techniques of digital image processing. For the first time in biological imaging, this study demonstrates the tremendous potential involved in the complementary use of Z-contrast imaging and digital image processing.Imaging in the Z-contrast mode is powerful for three distinct reasons, the first of which involves tissue preparation. It affords biologists the opportunity to visualize biological tissue without the use of heavy metal fixatives and stains. For years biologists have used heavy metal components to compensate for the limited electron scattering properties of biological tissue.

Acetaminophen: Macula densa hypersecretory activity by induced hepatotoxicity

1987 ◽  
Vol 45 ◽  
pp. 934-935
Author(s):  
S.S. Poolsawat ◽  
C.A. Huerta ◽  
S.TY. Lae ◽  
G.A. Miranda
Keyword(s):  
Cell Proliferation ◽  
Liver Function ◽  
Chronic Inflammation ◽  
Foam Cell ◽  
Term Effect ◽  
Short Term ◽  
Drug Induced ◽  
Experimental Induction ◽  
Tissue Alterations ◽  
Toxic Responses

Introduction. Experimental induction of altered histology by chemical toxins is of particular importance if its outcome resembles histopathological phenomena. Hepatotoxic drugs and chemicals are agents that can be converted by the liver into various metabolites which consequently evoke toxic responses. Very often, these drugs are intentionally administered to resolve an illness unrelated to liver function. Because of hepatic detoxification, the resulting metabolites are suggested to be integrated into the macromolecular processes of liver function and cause an array of cellular and tissue alterations, such as increased cytoplasmic lysis, centrilobular and localized necroses, chronic inflammation and “foam cell” proliferation of the hepatic sinusoids (1-4).Most experimentally drug-induced toxicity studies have concentrated primarily on the hepatic response, frequently overlooking other physiological phenomena which are directly related to liver function. Categorically, many studies have been short-term effect investigations which seldom have followed up the complications to other tissues and organs when the liver has failed to function normally.

Sign in / Sign up

Export Citation Format

Share Document