Macrophages

Cytokine bao gồm: các Interleukin với 35 thành viên (từ IL1 đến IL35), các colonny stimulating factors (Macrophager CSF, Glanulocyte CSF, Glanulocyte Macrophager CSF), hormone tăng trưởng, Interferon, TNFs, NGF và các chemokine. Bài viết trình bày xác định sự thay đổi của IL-1, IL-2 trong dịch chọc dò theo nguyên nhân tràn dịch.

5p viormkorn 06-11-2024 2 0   Download

Resveratrol is a naturally occurring compound with anti-inflammatory properties. However, the protective molecular mechanisms of resveratrol against LPS-induced inflammation have not been thoroughly known. In the present study, we examined the antiinflammatory effect of resveratrol in inflammatory model using murine macrophage-like cell RAW264.7 stimulated with LPS. Resveratrol suppressed the production of inflammatory cytokines in LPS-stimulated RAW264.7 cells with the IC50 value as 17.5 ± 0.7 μM for IL-6, 14.2 ± 1.9 μM for IL-10, and 18.9 ± 0.6 μM for TNF-α.

9p xuanphongdacy06 18-09-2024 1 1   Download

The aims of the study "Characterising microbial and neuroimmune interactions in a mouse model of autism" are threefold: i) To characterize the influence of the R451C mutation on caecal enteric neuron organization; ii) To characterize the influence of the R451C mutation on caecal patch macrophage density and morphology; iii) To assess for alterations in gut microbes in different regions of the GI tract in the NL3R451C mouse model of autism.

83p runthenight04 02-02-2023 8 1   Download

Granulocyte macrophage colony stimulating factor (GM-CSF) là một cytokine đa chức năng, giúp phôi phát triển hoàn chỉnh và tăng khả năng làm tổ của phôi. Bổ sung GM-CSF vào môi trường nuôi cấy phôi thụ tinh trong ống nghiệm cổ điển đã được nghiên cứu. Bài viết trình bày so sánh tỷ lệ tạo phôi nang của nhóm bệnh nhân điều trị CAPA-IVM có noãn được nuôi cấy trưởng thành trong môi trường có bổ sung GM-CSF với nhóm không bổ sung GM-CSF.

6p viedison 13-04-2022 20 2   Download

The expression and activation of eukaryotic translation initiation factor 4E (eIF4E) is associated with cell transformation and tumor initiation, but the functional role and the mechanism whereby it drives immune cell infltration in breast cancer (BRCA) remain uncertain.

20p vielonmusk 21-01-2022 12 0   Download

Breast microcalcifcations is a characteristic feature in diagnostic imaging and a prognostic factor of breast cancer. However, the underlying mechanisms of breast microcalcifcations formation are not fully understood. Previous studies have shown that upregulation of bone morphogenetic protein 2 (BMP-2) is associated with the occurrence of microcalcifcations and tumor-associated macrophages (TAMs) in the tumor microenvironment can secrete BMP-2.

9p vielonmusk 21-01-2022 18 1   Download

Radiotherapy is a highly effective treatment for cervical cancer. Recent studies focused on the radiotherapy induced anti-tumor immunity. Whether tumor-derived extracellular vesicles (EVs) play roles in radiotherapy induced tumor associated macrophage (TAM) polarization remains unclear.

12p vielonmusk 21-01-2022 23 0   Download

Bài viết nghiên cứu này, môi trường tế bào Porcine Alveolar Macrophages (PAM) bước đầu đã được ứng dụng để nuôi cấy, phân lập virus dịch tả lợn châu Phi (DTLCP) từ mẫu bệnh phẩm thu ở thực địa. Lợn nghi mắc bệnh DTLCP có các triệu chứng và bệnh tích điển hình được sử dụng để làm vật liệu nghiên cứu. Virus DTLCP được phát hiện bằng phương pháp PCR truyền thống kết hợp giải trình tự gen sử dụng cặp mồi đặc hiệu PPA1 và PPA2.

7p trinhthamhodang1216 07-11-2020 83 5   Download

Tạp chí Khoa học kỹ thuật Thú y – Số 3/2019 thông tin đến các bạn với một số bài viết Phân lập virus dịch tả lợn châu Phi trên môi trường tế bào Porcine Alveolar Macrophages (PAM); Yếu tố nguy cơ liên quan đến huyết thanh dương tính virus PRRS mức hộ chăn nuôi ở tỉnh Phú Thọ và Quảng Ninh; Ảnh hưởng của nồng độ muối cao và phương thức nuôi đến tỷ lệ phân lập, số lượng và tính mẫn cảm kháng sinh của vi khuẩn Escherichia coli trên giống vịt biển 15 Đại Xuyên; Xác định một số gen gây bệnh của vi khuẩn chịu nhiệt Campylobacter spp. phân lập từ thịt lợn và thịt gà tại Việt Nam...

104p cothumenhmong8 04-11-2020 75 6   Download

Hepcidin (H25) is a hormone peptide synthesized by the liver that binds to ferroportin and blocks iron export. In this study, H25 was inhibited by administration of single and multiple doses of an anti-H25 monoclonal antibody Ab 12B9m in cynomolgus monkeys. The objective of this analysis was to develop a pharmacodynamic model describing the role of H25 in regulating iron homeostasis and the impact of hepcidin inhibition by Ab 12B9m. Total serum H25 and Ab 12B9m were determined in each animal. Corresponding measurements of serum iron and hemoglobin (Hb) were obtained.

15p caothientrangnguyen 09-05-2020 12 1   Download

Nghiên cứu tiến hành khảo sát sự ảnh hưởng của việc bỏ đói tế bào, mật độ tế bào, nồng độ lipopolysaccharide (LPS), thời gian ủ LPS lên khả năng tiết nitric oxide của tế bào RAW 264.7. Kết quả thực nghiệm cho thấy mật độ tế bào tối ưu cho mô hình là 104 tế bào trên giếng, gây đói tế bào sử dụng huyết thanh 1 %, sử dụng LPS nồng độ cuối là 0.5 µg/mL trong thời gian 24 giờ.

9p gildur 30-11-2019 48 4   Download

Cannabinoid receptors and their endogenous ligands, the endocannabinoids, have been detected in several blood immune cells, including monocytes/macrophages, basophils and lymphocytes. However, their presence in dendritic cells, which play a key role in the initiation and development of the immune response, has never been investigated.

8p system191 01-06-2013 28 4   Download

The human immunodeficiency virus type 1, HIV-1, genome encodes a highly conserved regulatory gene product, Vpr (96 amino acids), which is incorporated into virions in quantities equivalent to those of the viral Gag protein. In infected cells, Vpr is believed to function during the early stages of HIV-1 replication (such as transcription of the proviral genome and migration of preintegration nuclear complex), blocks cells in G2 phase and triggers apoptosis.

10p system191 01-06-2013 45 4   Download

Nitrogen monoxide (NO) is a cytotoxic effector molecule produced by macrophages that results in Fe mobilization from tumour target cells which inhibits DNA synthesis and mitochondrial respiration. It is well known that NO has a high affinity for Fe, and we showed that NO-mediated Fe mobilization is markedly potentiated by glutathione (GSH) generated by the hexose monophosphate shunt [Watts, R.N. & Richardson, D.R. (2001) J. Biol. Chem. 276, 4724–4732]. We hypothesized that GSH completes the coordination shell of an NO–Fe complex that is released from the cell.

10p research12 01-06-2013 47 3   Download

Production of nitric oxide (NO) in response to bacterial lipopolysaccharide (LPS) was investigated using cultures of mouse peritoneal exudate cells (PEC) and the macrophage cell line RAW264.7. In the presence of anti-(interferon-c) (IFN-c), NO production was markedly suppressed in the PEC culture but not in the RAW264.7 culture. In the PEC culture, LPS induced both IFN-cproduction and activation of IFNresponse factor-1, which leads to the gene expression of inducible NO synthase, but neither was induced in the culture of RAW264.7 cells....

10p tumor12 20-04-2013 30 4   Download

In the leukemic macrophage cell-line THP-1, a fraction of the secreted matrix metalloproteinase 9 (MMP-9) is linked to the core protein of chondroitin sulfate proteoglycans (CSPG). Unlike the monomeric and homodimeric forms of MMP-9, the addition of exogenous CaCl2 to the proMMP-9/CSPG complex resulted in an active gelatinase due to the induction of an autocatalytic removal of the N-terminal prodomain.

12p tumor12 20-04-2013 35 3   Download

The importance of proteoglycans for secretionof proteolytic enzymes was studied in the murine macrophage cell line J774. Untreated or 4b-phorbol 12-myristate 13-acetate (PMA)-stimulated macrophages were treated with hexyl-b-D-thioxyloside to interfere with the attachment of glycosaminoglycan chains to their respective protein cores. Activation of the J774 macrophages with PMA resulted in increased secretion of trypsin-like serine proteinase activity.

10p tumor12 20-04-2013 34 3   Download

Earlier we presented several lines of evidence that a 67-kDa laminin binding protein (LBP) inLeishmania donovani,that is different from the putative mammalian 67-kDa laminin receptor, may play an important role in the onset of leish-maniasis, as these parasites invade macrophages in various organs after migrating through the extracellular matrix. Here we describe the membrane orientation of thisLeish-manialaminin receptor.

8p tumor12 20-04-2013 45 4   Download

The effects of physiologically relevant hypoxia on the catalytic activity of cytochromecoxidase (CytOX), mito-chondrial gene expression, and both nuclear and mito-chondrial encoded CytOX mRNA levels were investigated in murine monocyte macrophages, mouse C2C12 skeletal myocytes and rat adrenal pheochromocytoma PC12 cells. Our results suggest a coordinated down regulation of mito-chondrial genome-coded CytOX I and II and nuclear genome-codedCytOX IV andVbmRNAs during hypoxia.

9p tumor12 20-04-2013 34 2   Download

Pathogenicity ofMycobacterium tuberculosisis closely rela-ted to its ability to survive and replicate in the hostile envi-ronment of macrophages. For some pathogenic bacteria, secretion of ATP-utilizing enzymes into the extracellular environment aids in pathogen survival via P2Z receptor-mediated, ATP-induced death of infected macrophages. A component of these enzymes is nucleoside diphosphate kinase (Ndk). Thendkgenewas cloned fromM. tuberculosis H37Rv and expressed inEscherichia coli.

10p tumor12 20-04-2013 42 3   Download