scholarly journals Ageratina adenophora Inhibits Spleen Immune Function in Rats via the Loss of the FRC Network and Th1–Th2 Cell Ratio Elevation

Toxins ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 309
Author(s):  
Zhihua Ren ◽  
Pei Gao ◽  
Samuel Kumi Okyere ◽  
Yujing Cui ◽  
Juan Wen ◽  
...  
Keyword(s):  
Protein Expression ◽  
Immune Function ◽  
Tissue Sample ◽  
Th2 Cells ◽  
Sample Collection ◽  
Functional Protein ◽  
Th2 Cell ◽  
Ageratina Adenophora ◽  
Mrna And Protein Expression ◽  
The Impact

The objective of this study was to determine the impact of Ageratina adenophora (A. adenophora) on splenic immune function in a rat model. Rats were fed with 10 g/100 g normal feed and an experimental feed, which was composed of 3:7 A. adenophora powder and normal feed for 60 days. On days 14, 28, and 60, subsets of rats (n = 8 rats/group/time point) were selected for blood and spleen tissue sample collection. The results showed that the proportion of CD3+ T cells in the spleen was decreased at day 60 (vs. control). Also, mRNA and protein expression of chemokines CCL21 and CCL19 and functional protein gp38 in spleen decreased significantly versus the control at day 60. In addition, ER-TR7 antigen protein expression was also decreased at day 60. Levels of T-helper (Th)1 cells significantly increased, whereas those of Th2 cells decreased significantly versus the control at day 60 in spleen. The finding revealed that A. adenophora could affect splenic immune function in rats by altering the fibroblast reticulocyte (FRC) network, as well as by causing an imbalance in Th1/Th2 cell ratios. This research provides new insights into potential mechanisms of spleen immunotoxicity due to exposures to A. Adenophora.

Parathyroid hormone stimulates endothelial expression of atherosclerotic parameters through protein kinase pathways

2007 ◽  
Vol 292 (4) ◽  
pp. F1215-F1218 ◽  
Author(s):  
Gloria Rashid ◽  
Jacques Bernheim ◽  
Janice Green ◽  
Sydney Benchetrit
Keyword(s):  
Parathyroid Hormone ◽  
Protein Kinase ◽  
Protein Expression ◽  
Mrna Expression ◽  
Umbilical Vein ◽  
Protein Levels ◽  
Glycation End Products ◽  
Mrna And Protein Expression ◽  
Vascular Structures ◽  
The Impact

Parathyroid hormone (PTH), the major systemic calcium-regulating hormone, has been linked to uremic vascular changes. Considering the possible deleterious action of PTH on vascular structures, it seemed logical to evaluate the impact of PTH on the receptor of advanced glycation end products (RAGE) and interleukin 6 (IL-6) mRNA and protein expression, taking into account that such parameters might be involved in the pathogenesis of vascular calcification, atherosclerosis, and/or arteriolosclerosis. Human umbilical vein cord endothelial cells (HUVEC) were stimulated for 24 h with 10−12–10−10 mol/l PTH. The mRNA expression of RAGE and IL-6 was established by reverse transcriptase/PCR techniques. RAGE protein levels were determined by Western blot and IL-6 secretion was measured by ELISA. The pathways by which PTH may have an effect on HUVEC functions were evaluated. PTH (10−11–10−10mol/l) significantly increased RAGE mRNA and protein expression. PTH also significantly increased IL-6 mRNA expression without changes at protein levels. The addition of protein kinase (PKC or PKA) inhibitors or nitric oxide (NO) synthase inhibitors significantly reduced the RAGE and IL-6 mRNA expression and the RAGE protein expression. PTH stimulates the mRNA expressions of RAGE and IL-6 and the protein expression of RAGE. These stimulatory effects are probably through PKC and PKA pathways and are also NO dependent. Such data may explain the possible impact of PTH on the atherosclerotic and arteriosclerotic progression.

scholarly journals Complementary expression and phosphorylation of Cx46 and Cx50 during development and following gene deletion in mouse and in normal and orchitic mink testes

2015 ◽  
Vol 309 (3) ◽  
pp. R255-R276 ◽  
Author(s):  
R.-Marc Pelletier ◽  
Casimir D. Akpovi ◽  
Li Chen ◽  
Nalin M. Kumar ◽  
María L. Vitale
Keyword(s):  
Protein Expression ◽  
Germ Cell ◽  
Gap Junction ◽  
Sertoli Cell ◽  
Cell Communication ◽  
Seminiferous Tubules ◽  
Junction Protein ◽  
Mrna And Protein Expression ◽  
Autoimmune Orchitis ◽  
The Impact

Gap junction-mediated communication helps synchronize interconnected Sertoli cell activities. Besides, coordination of germ cell and Sertoli cell activities depends on gap junction-mediated Sertoli cell–germ cell communication. This report assesses mechanisms underlying the regulation of connexin 46 (Cx46) and Cx50 in mouse testis and those accompanying a “natural” seasonal and a pathological arrest of spermatogenesis, resulting from autoimmune orchitis (AIO) in mink. Furthermore, the impact of deleting Cx46 or Cx50 on the expression, phosphorylation of junction proteins, and spermatogenesis is evaluated. Cx46 mRNA and protein expression increased, whereas Cx50 decreased with adulthood in normal mice and mink. Cx46 mRNA and protein expression increased, whereas Cx50 decreased with adulthood in normal mice and mink. During the mink active spermatogenic phase, Cx50 became phosphorylated and localized to the site of the blood-testis barrier. By contrast, Cx46 was dephosphorylated and associated with annular junctions, suggesting phosphorylation/dephosphorylation of Cx46 and Cx50 involvement in the barrier dynamics. Cx46-positive annular junctions in contact with lipid droplets were found. Cx46 and Cx50 expression and localization were altered in mink with AIO. The deletion of Cx46 or Cx50 impacted on other connexin expression and phosphorylation and differently affected tight and adhering junction protein expression. The level of apoptosis, determined by ELISA, and a number of Apostain-labeled spermatocytes and spermatids/tubules were higher in mice lacking Cx46 ( Cx46−/−) than wild-type and Cx50−/− mice, arguing for life-sustaining Cx46 gap junction-mediated exchanges in late-stage germ cells secluded from the blood by the barrier. The data show that expression and phosphorylation of Cx46 and Cx50 are complementary in seminiferous tubules.

scholarly journals A MicroRNA-124 Polymorphism is Associated with Fracture Healing via Modulating BMP6 Expression

2017 ◽  
Vol 41 (6) ◽  
pp. 2161-2170 ◽  
Author(s):  
Lin Zou ◽  
Guichun Zhang ◽  
Lifeng Liu ◽  
Chen Chen ◽  
Xuecheng Cao ◽  
...  
Keyword(s):  
Protein Expression ◽  
Fracture Healing ◽  
Plate Osteosynthesis ◽  
Distal Tibia ◽  
Expression Level ◽  
Protein Expression Level ◽  
Regulatory Relationship ◽  
Metaphyseal Fracture ◽  
Mrna And Protein Expression ◽  
The Impact

Background: miR-124-3p has been reported to be involved in the pathogenesis of many diseases by modulating a variety of signaling pathways. In this study, we aimed to understand the impact of miR-124-3p expression level on the fracture healing in the patients of metaphyseal fracture of distal tibia, who received minimal invasive percutaneous plate osteosynthesis. Methods: We firstly collected 195 patients of metaphyseal fracture of distal tibia, and the genotype of rs531564 was determined: GG (n=124) and GC+CC (n=71). We collected information of the participants including age, gender, total in-hospital time, smoking and alcohol consumption. Subsequently, we searched the miRNA database online to identify the possible binding sequence of miR-124-3p located within the 3’-UTR of the target gene. We did correlation analysis and luciferase to understand the regulatory relationship between miR-124-3p and BMP6. Meanwhile, we also conducted real time PCR and western blotting analysis to study the mRNA and protein expression level of BMP6 in different genotype groups. We then treated the cells with scramble control, miR-124-3p mimics, BMP6 siRNA and miR-124-3p inhibitors to investigate the influence of miR-124-3p on the expression of BMP6, viability and apoptosis of cells. Results: Total in-hospital time was significantly longer in GC+CC group than GG group. MiR-124-3p was up-regulated in GG group than GC and CC groups. BMP6 was virtual target of miR-124-3p. There existed negative regulatory relationship betweenmiR-124-3p and BMP6. The mRNA and protein expression level of BMP6 decreased in GG group. MiR-124-3p decreased the expression of BMP6. MiR-124-3p negatively interfered with the viability of cells and BMP6 positively interfered with the viability of cells. MiR-124-3p reduced apoptosis and BMP6 promoted apoptosis. Conclusion: These data proved the expression of miR-124-3p was associated with the healing of metaphyseal fracture of distal tibia, and could be recognized as a biomarker to predict the healing of metaphyseal fracture of distal tibia.

scholarly journals In search of an evidence-based strategy for quality assessment of human tissue samples: report of the tissue Biospecimen Research Working Group of the Spanish Biobank Network

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Margalida Esteva-Socias ◽  
María-Jesús Artiga ◽  
Olga Bahamonde ◽  
Oihana Belar ◽  
Raquel Bermudo ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Human Tissue ◽  
Working Group ◽  
Tissue Sample ◽  
Quality Criteria ◽  
Analytical Techniques ◽  
Sample Collection ◽  
Tissue Samples ◽  
The Impact

Abstract The purpose of the present work is to underline the importance of obtaining a standardized procedure to ensure and evaluate both clinical and research usability of human tissue samples. The study, which was carried out by the Biospecimen Science Working Group of the Spanish Biobank Network, is based on a general overview of the current situation about quality assurance in human tissue biospecimens. It was conducted an exhaustive review of the analytical techniques used to evaluate the quality of human tissue samples over the past 30 years, as well as their reference values if they were published, and classified them according to the biomolecules evaluated: (i) DNA, (ii) RNA, and (iii) soluble or/and fixed proteins for immunochemistry. More than 130 publications released between 1989 and 2019 were analysed, most of them reporting results focused on the analysis of tumour and biopsy samples. A quality assessment proposal with an algorithm has been developed for both frozen tissue samples and formalin-fixed paraffin-embedded (FFPE) samples, according to the expected quality of sample based on the available pre-analytical information and the experience of the participants in the Working Group. The high heterogeneity of human tissue samples and the wide number of pre-analytic factors associated to quality of samples makes it very difficult to harmonize the quality criteria. However, the proposed method to assess human tissue sample integrity and antigenicity will not only help to evaluate whether stored human tissue samples fit for the purpose of biomarker development, but will also allow to perform further studies, such as assessing the impact of different pre-analytical factors on very well characterized samples or evaluating the readjustment of tissue sample collection, processing and storing procedures. By ensuring the quality of the samples used on research, the reproducibility of scientific results will be guaranteed.

scholarly journals Evaluation of the impact of the proteasome inhibitor on calcium channel expression in cardiomyocytes treated with doxorubicin

2018 ◽  
Vol 31 (1) ◽  
pp. 18-21
Author(s):  
Agnieszka Korga ◽  
Milena Soroka ◽  
Karolina Wicha ◽  
Ewelina Humeniuk ◽  
Grzegorz Adamczuk ◽  
...  
Keyword(s):  
Protein Expression ◽  
Calcium Channel ◽  
Proteasome Inhibitor ◽  
Anthracycline Cardiomyopathy ◽  
Channel Expression ◽  
Embryonic Cardiomyocytes ◽  
Ubiquitin Proteasome ◽  
Mrna And Protein Expression ◽  
The Impact

AbstractOne of the less known mechanisms of doxorubicin action is the effect on the functioning of the ubiquitin-proteasome degradation system (UPS). So far, the role of impaired proteasome activity in the development of anthracycline cardiomyopathy has not been clarified. It has been shown, however, that doxorubicin decreases the expression of proteins, including the expression of the calcium channel. However, it has not been established whether the observed disturbances are due to the activation of the UPS system by doxorubicin, or due to inhibition of translation or transcription. Therefore, the aim of the study was to evaluate the mRNA and protein expression of plasmalemmal (NaCaX, L-type) and sarcoplasmic reticulum (SERCA2, RyR2) channels in rat embryonic cardiomyocytes treated with doxorubicin and the proteasome inhibitor – bortezomib. The study was conducted utilizing the rat cardiomyocyte H9C2 line that was treated with doxorubicin and bortezomib in different concentrations. After 24 hours incubation, mRNA and protein expression analysis followed. The study did not show any universal mechanism of doxorubicin influence on calcium channel expression. With regard to the Na/Ca exchanger, we saw that DOX decreased the protein level in a proteasome activitydependent manner. Moreover, we noted that the SERCA2 protein expression level was regulated by degradation intensity, however at the same time, no significant effect of doxorubicin on the level of this protein was demonstrated.

Bone sialoprotein mRNA and protein expression in human multiple myeloma cell lines and patients

2000 ◽  
Vol 111 (4) ◽  
pp. 1118-1121 ◽  
Author(s):  
A. Bellahcene ◽  
I. Van Riet ◽  
C. de Greef ◽  
N. Antoine ◽  
M. F. Young ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Protein Expression ◽  
Cell Lines ◽  
Myeloma Cell ◽  
Bone Sialoprotein ◽  
Multiple Myeloma Cell ◽  
Human Multiple Myeloma ◽  
Mrna And Protein Expression

Changes in mRNA and Protein Expression of Antioxidant Enzymes in Leukocytes of Children with Bronchial Asthma after Interval Hypoxic Training

2012 ◽  
Vol 3 (2) ◽  
pp. 125-134
Author(s):  
Klaudia V. Nesvitaylova ◽  
Olga A. Gonchar ◽  
Tatyana I. Drevitskaya ◽  
Ludmila P. Arabskaya ◽  
Mikhail M. Steshenko ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Protein Expression ◽  
Bronchial Asthma ◽  
Hypoxic Training ◽  
Mrna And Protein Expression

EFEKTIVITAS UJIAN AKHIR SEMESTER SECARA ONLINE MENGGUNAKAN APLIKASI GOOGLE FORM PADA SMP MA'ARIF NU CIMANGGU

2021 ◽  
Vol 2 (2) ◽  
pp. 76-86
Author(s):  
Diky Setiawan ◽  
Mochammad Hasymi Somaida
Keyword(s):  
Survey Method ◽  
Sample Collection ◽  
Quantitative Survey ◽  
Corona Virus ◽  
The World ◽  
Teachers And Students ◽  
The Impact

The Corona virus is a virus that originates from China, and spreads rapidly throughout the world andbegan to spread to Indonesia in early March 2020. The impact of Covid-19 has caused losses in all fields,be it economy, education, etc. In the field of education, activities both learning and examinations must bereplaced online due to the impact of the spread of Covid-19. This study aims to determine theeffectiveness of the implementation of UAS which is carried out online using the Google Form applicationmedia at SMP MA'ARIF NU CIMANGGU. This research uses the quantitative survey method whichdescribes the online UAS implementation activities at SMP MA'ARIF NU CIMANGGU during thepandemic. The object consists of 35 student respondents. The data sample collection is done using aquestionnaire / questionnaire containing questions related to the implementation of UAS online using theGoogle Form application at SMP MA ' ARIF NU CIMANGGU. Based on the results of this study, theimplementation of online UAS runs effectively f and good, it can be seen from the results of satisfactorystudent scores. The application used is of course the Googke Form as the main media, and Whatsapp as amedium for interaction between teachers and students. The obstacles experienced are regarding badconnections, limited quota, schedules that frequently change, as well as difficulties in understandingsubject matter.Keywords: Covid-19,impact,effectiveness

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