Search results for "Lymphatic System"
showing 10 items of 122 documents
Effects of ultraviolet light on immune parameters of the roach
2000
Ultraviolet B radiation penetrates into water and can affect fish health and the immune system, as is the case with mammals. Teleost fish, the roach, were exposed to UVB irradiation in aquariums and a panel of immune parameters was determined. In addition to altered blood picture and respiratory burst by blood leukocytes, changes were noted also in major lymphatic organs. Respiratory burst and natural cytotoxicity activity of head kidney granulocytes and mitogen-activated proliferation of splenic lymphocytes were suppressed. Although mostly transitory, some parameters remained suppressed for the following 2 weeks. Ultraviolet A radiation had only minor effects. The stress induced by UVB may…
Endomicroscopy of Small Bowel Diseases: Coeliac Disease, Lymphoma
2007
The different components making up the complement of immune elements within the alimentary tract vary greatly. In contrast to the Waldeyer’s ring region, the oesophagus and stomach are normally almost devoid of such immune apparatus, presumably because of the rapid transit of food and the chemically hostile environment for micro-organisms provided by salivary and gastric secretions. Only in pathological conditions, such as viral or fungal oesophageal infections, reflux oesophagitis or Helicobacter gastritis, does one encounter acquired mucosa-associated lymphoid tissue in these sites [1]. By contrast, the large and small bowel normally possess mucosa-associated lymphoid tissue (MALT), most …
On the develpment of the absorbing lymphatic vessel
2007
SALT (»skin-associated lymphoid tissue«)
2016
Neben der wichtigen Barrierefunktion besitzt die Haut durch eine Vielzahl hautresidenter und einwandernder Zellpopulationen in Form des hautassoziierten lymphoiden Gewebes (SALT = »skin-associated lymphoid tissue«) eine Schlusselrolle zur Organisation von Immunreaktionen. Innerhalb dieses komplexen Netzwerks wirken Keratinozyten als Sensorzellen, die Gefahrenpotenziale erkennen und ihrerseits antigenprasentierende Zellen mittels Mediatorausschuttung stimulieren konnen. Zusatzlich sind auch Mastzellen, Granulozyten und Makrophagen in ahnlicher Weise in die Funktionen des SALT eingebunden. Durch die anschliesende Aktivierung und Rekrutierung verschiedener T-Zell-Populationen, wie gewebereside…
Pleural epithelioid angiosarcoma with lymphatic differentiation arisen after radiometabolic therapy for thyroid carcinoma: immunohistochemical findin…
2017
Abstract Background Pleural angiosarcoma is a rare tumor that causes diffuse pleural thickening and effusion, mimicking mesothelioma. Immunohistochemistry is needed to highlight endothelial differentiation. We describe the first case of pleural angiosarcoma with lymphatic differentiation following radiometabolic therapy for thyroid carcinoma. Case presentation A 50-year-old man showed diffuse pleural thickening and effusion. Nine years earlier, he underwent thyroidectomy and radiometabolic therapy for thyroid carcinoma with lymph node metastases. Histologically, the tumor consisted of a solid proliferation of atypical epithelioid cells and anastomosed vascular spaces, lacking of red blood c…
Relationships of growth factors, proinflammatory cytokines, and anti-inflammatory cytokines with long-term clinical results of autologous bone marrow…
2017
Aim The aim of the study was to test the hypothesis suggesting that the pre-intervention levels of proinflammatory cytokines, anti-inflammatory cytokines, and angiogenic growth factors predict the long-term clinical results of autologous bone marrow-derived mononuclear cell (ABMMC) transplantation in patients with primary ST elevation myocardial infarction (STEMI). Methods and results From 2003 to 2006, a total of 62 patients with primary STEMI were enrolled in an open randomized study registered under the title ESTABOMA. Patients were randomized into two groups: group 1 included patients treated with percutaneous coronary intervention (PCI) and ABMMC transplantation (n = 28); group 2 compr…
Lymphatic absorption of phytosterol oxides in rats
1999
Two of the main classes of oxyphytosterols (7-keto and epoxides) were synthesized from sitosterol and campesterol and given to mesenteric duct-cannulated adult male rats. Lymph was collected during 24 h and was analyzed for oxysterols. The results showed that the lymphatic recovery of the phytosterol oxides was low: 4.7% of the given dose for epoxy derivatives and 1.5% for 7-keto compounds. The campesterol oxides presented a better absorption than the sitosterol oxides. During the process of absorption, the epoxyphytostanols were also partly transformed in campestanetriol and stigmastanetriol.
Expression of serologically identified tumor antigens in acute leukemias.
2003
Cancer/testis antigens (CTA) are an expanding family of immunogenic proteins selectively expressed in human neoplasms. As little is known about the expression of serologically identified CTA in leukemias so far, we investigated the expression of 5 CT genes (SSX-1, HOM-MEL-40/SSX-2, HOM-TES-14/SCP-1, SCP-3 and NY-ESO-1) in leukemic blood samples obtained from patients with either acute lymphatic leukemias (ALL) or myelocytic leukemia (AML). RT-PCR-analyses showed no expression of any of the CT-genes in the leukemia samples of 19 patients with AML, whereas frequent expression was found in ALL. In the 17 ALL cases studied, SCP3a, SSX-1, HOM-MEL-40/SXX-2 and HOM-TES-14/SCP-1 were expressed in 4…
Chemokine receptor CCR7 enhances intrahepatic and lymphatic dissemination of human hepatocellular cancer.
2006
Despite many pathophysiological analyses, the process of tumor dissemination of hepatocellular carcinoma (HCC) remains vague. In diverse tumor entities, expression of the chemokine receptor, CCR7, has been linked to tumor dissemination and poor prognosis. Therefore, we evaluated, whether CCR7 exerts similar effects in human HCC. CCR7 expression analysis was performed in vitro on human hepatoma cell lines (Huh7, Hep3B, wt HepG2, p53 dominant negative transfected HepG2). In addition, CCR7 expression was evaluated in 39 patients with hepatocellular cancer and correlated with both, tumor and patients characteristics. Human hepatocellular carcinoma samples and hepatoma cell lines displayed varia…
Liver transplantation for hepatocellular carcinoma with intrahepatic lymphatic invasion: case reports.
2008
Multiple studies addressing liver transplantation (OLT) for hepatocellular carcinoma (HCC) have identified various prognostic determinants of tumor recurrence and decreased patient survival. However, little information is available on the impact of intrahepatic lymphatic invasion on tumor recurrence and survival after OLT for HCC. Intrahepatic lymphatic invasion was observed in 1.4% (n = 2) of liver explants with HCC in our series. Both recipients are alive without tumor recurrence at 16 and 39 months post-OLT, respectively. Intrahepatic lymphatic invasion may not be an absolute adverse prognostic factor in cases of HCC with no hilar lymph node involvement at the time of OLT.