scholarly journals M2 Macrophage Subpopulations in Glomeruli Are Associated With the Deposition of IgG Subclasses and Complements in Primary Membranous Nephropathy

2021 ◽  
Vol 8 ◽  
Author(s):  
Wenxue Hu ◽  
Guanglan Li ◽  
Jieshan Lin ◽  
Wei Dong ◽  
Feng Yu ◽  
...  
Keyword(s):  
Membranous Nephropathy ◽  
Serum Albumin Level ◽  
Renal Tissue ◽  
Albumin Level ◽  
Igg Subclasses ◽  
M2 Macrophage ◽  
M2 Macrophages ◽  
Macrophage Subpopulations ◽  
The Relationship

Objectives: The role of M2 macrophages in the pathogenesis and progression of primary membranous nephropathy (PMN) remains unknown. In this study, we aimed to investigate the relationship between M2 subsets and clinicopathological features of patients with PMN.Methods: A total of 55 patients with PMN confirmed by biopsy were recruited. The clinical and pathological data were recorded, respectively. Immunohistochemistry was used to detect the markers of M2 macrophages, including total macrophages (CD68+), M2a (CD206+), M2b (CD86+) and M2c (CD163+).Results: The numbers of glomerular macrophages, M2a, M2b, and M2c macrophages were 1.83 (1.00, 2.67), 0.65 (0.15, 1.15), 0.67 (0.33, 1.50), and 0.80 (0.05, 2.30) per glomerulus, respectively. Higher number of glomerular macrophages was found in stage II compared with stage III (2.08 vs. 1.16, P = 0.008). These macrophages also were negatively correlated with serum albumin level (r = −0.331, P = 0.014), while positively associated with complement 3 (C3) deposition (r = 0.300, P = 0.026) and the severity of glomerulosclerosis (r = 0.276, P = 0.041). Moreover, glomerular M2a macrophages were significantly correlated with the deposition of C3 (r = 0.300, P = 0.026), immunoglobulin G1 (IgG1) (r = 0.339, P = 0.011), immunoglobulin G2 (IgG2) (r = 0.270, P = 0.046) and immunoglobulin G3 (IgG3) (r = 0.330, P = 0.014) in glomerular basement membrane (GBM). In addition, M2b macrophages were positively associated with IgG1 (r = 0.295, P = 0.029) and IgG2 (r = 0.393, P = 0.003), while M2c macrophages were negatively correlated with complement 4d (C4d) (r = −0.347, P = 0.009) in GBM.Conclusions: Our results showed that M2 macrophage subpopulations in glomeruli are associated with the deposition of IgG subclasses and complements in renal tissue of PMN, which indicate that M2 macrophages may be involved in the pathogenesis and progression of PMN. Moreover, M2a and M2c macrophages might show different tendencies in the pathogenesis of PMN.

scholarly journals The role of adiponectin and its receptor in patients with idiopathic membranous nephropathy complicated with hyperuricemia

2021 ◽  
pp. 31-31
Author(s):  
Tong Liu ◽  
Mengdi Xia ◽  
Yongji Zhang ◽  
Yibin Wang ◽  
Yun Zhou
Keyword(s):  
Membranous Nephropathy ◽  
Kidney Tissue ◽  
Renal Tissue ◽  
Idiopathic Membranous Nephropathy ◽  
Elisa Method ◽  
Adiponectin Receptor 1 ◽  
Ckd Stage ◽  
The Relationship ◽  
Nlrp3 Expression

Introduction/Objective. This study aimed to assess the changes of adiponectin (APN), IL-1?, adiponectin receptor 1 (Adipo R1), and NLRP3 expression of patients with idiopathic membranous nephropathy (IMN) complicated with hyperuricemia (HUA) and analyze the relationship between the APN pathway and the NLRP3 pathway. Methods. Forty-eight patients with IMN+HUA group, 49 patients with IMN group, 30 healthy controls, and 24 samples of healthy renal tissue were evaluated. APN and IL-1? of each group were detected by the ELISA method. AdipoR1 and NLRP3 in kidney tissue were detected by immunohistochemistry. The clinical data of each group were collected, and the relationship between APN, IL-1?, AdipoR1, NLRP3, and other indexes was analyzed. Results. (1) The concentration of UA, APN, IL-1?, and NLRP3 in the IMN+HUA group are significantly higher than those in the IMN group, but the AdipoR1 was lower. (2) With the severity of CKD stage, APN, IL-1?, and NLRP3 gradually increased in IMN+HUA group, but AdipoR1 gradually decreased. However, the above indicators did not change significantly in the IMN stages. Conclusion. The AdipoR1-AMPK and NLRP3-caspase-1-IL-1? signaling pathway may play an essential role in IMN+HUA patients. The intervention of these two pathways may make a great significance to the occurrence and progression on IMN+HUA patients.

scholarly journals The Role of Renal Macrophage, AIM, and TGF-β1 Expression in Renal Fibrosis Progression in IgAN Patients

2021 ◽  
Vol 12 ◽  
Author(s):  
Min Yang ◽  
Jia Wei Liu ◽  
Yu Ting Zhang ◽  
Gang Wu
Keyword(s):  
Renal Fibrosis ◽  
Renal Tissue ◽  
Normal Control Group ◽  
Control Group ◽  
M2 Macrophage ◽  
M2 Macrophages ◽  
Normal Renal Tissue ◽  
Fibrosis Progression ◽  
Tgf Β1

ObjectiveTo analyze the expression of macrophages, AIM, TGF-β1 in the kidney of IgAN patients, and to explore the role of macrophages, AIM, TGF-β1 in the progression of renal fibrosis in IgAN patients.MethodsThe paraffin specimens of renal tissue from 40 IgAN patients were selected as the observation group. At the same time, paraffin specimens of normal renal tissue from 11 patients treated by nephrectomy were selected as the normal control group. We observed the distribution of macrophages, the expression of AIM and TGF-β1 by immunohistochemical staining and/or immunofluorescence.ResultThe number of M0, M1, M2 macrophages could be found increased in IgAN patients. M0 macrophages are mainly polarized towards M2 macrophages. The expression of AIM and TGF-β1 were significantly higher in IgAN patients than in NC. M2 macrophage, AIM and TGF-β1 were positively correlated with serum creatinine and 24-hour proteinuria, but negatively correlated with eGFR. M2 macrophages, AIM, TGF-β1 were positively correlated with fibrotic area.ConclusionM2 macrophages, AIM and TGF-β1 play important roles in the process of IgAN fibrosis, and the three influence each other.

Serum Albumin Level as a Prognostic Marker for Covid-19 Positive Patients in Western Uttar Pradesh - A Cross Sectional Study

2021 ◽  
Vol 8 (04) ◽  
pp. 204-207
Author(s):  
Shreyansh Talera ◽  
Saurabh Singhal ◽  
Nishant Wadhera ◽  
Mayank Arora ◽  
Ravi Pratap
Keyword(s):  
Serum Albumin ◽  
Prognostic Marker ◽  
Serum Albumin Level ◽  
Uttar Pradesh ◽  
Cross Sectional Study ◽  
Albumin Level ◽  
The Body ◽  
Cross Sectional ◽  
Significant Difference

BACKGROUND WHO has declared Coronavirus disease 2019 (Covid-19) as a pandemic. Covid-19 leads to sickness and death. Human serum albumin (HSA) is the most common circulating protein in the body having oncotic as well as non-oncotic properties. The role of albumin in death among Covid-19 subjects, especially in this part of the country has not been frequently reported. The aim of the study was to analyse the role of serum albumin level as prognostic marker for Covid-19 positive patients. METHODS The present study was conducted in the department of Medicine at Chhatrapati Shivaji Subharti Hospital, Subharti Medical College, Meerut, UP. The study comprised of 100 subjects who were Covid positive from May 2020 to July 2020. A detailed explanation was given to all the participating respondents regarding the study and their contribution to it. Covid-19 was diagnosed on the basis of the WHO interim guidelines. A questionnaire was prepared to collect the patients’ demographic profile. Patients date of admission and discharge was recorded along with the outcome i.e., whether patient expired or survived. Patients’ diagnosis was identified along with the comorbidity (if present). Laboratory investigations comprised of CBC and serum albumin detection. Data so collected was tabulated in an excel sheet, under the guidance of statistician. Collected data was analysed using Statistical Package for the Social Sciences (SPSS) software version 24 and the tests used were t test and Fisher’s exact test and the level of significance was set at p < 0.05. RESULTS The study comprised of 100 subjects, out of which 45 were males and 55 were females. The overall mean age of the study subjects was 37.52 years. In our study, mortality was 35.29 %, 9.33 % and 85.7 % of the subjects having Covid-19+ type 2 diabetes (T2DM), only Covid-19 and Covid-19+ hypertension respectively with statistically significant difference as p < 0.05. Albumin level was significantly lower in expired patients (2.99) as compared to survivors (3.85) as p < 0.05. Hospital stay was also higher in expired patients. CONCLUSIONS Covid-19 patients had low serum albumin levels and that might play a role in the survival of patient. KEYWORDS Covid-19, Mortality, Albumin

536: THE RELATIONSHIP BETWEEN SERUM ALBUMIN LEVEL AND ORGAN DYSFUNCTION AFTER LIVER TRANSPLANTATION

2018 ◽  
Vol 46 (1) ◽  
pp. 253-253
Author(s):  
Hiroi Kazumasas ◽  
Takashi Matsusaki ◽  
Ryuji Kaku ◽  
Hiroshi Morimatsu
Keyword(s):  
Liver Transplantation ◽  
Serum Albumin ◽  
Organ Dysfunction ◽  
Serum Albumin Level ◽  
Albumin Level ◽  
The Relationship

scholarly journals microRNA-155-3p delivered by M2 macrophages-derived exosomes enhances the progression of medulloblastoma through regulation of WDR82

2022 ◽  
Vol 20 (1) ◽  
Author(s):  
Li Song ◽  
Bin Luan ◽  
Qingrong Xu ◽  
Ruihe Shi ◽  
Xiufang Wang
Keyword(s):  
Molecular Subtype ◽  
Luciferase Assay ◽  
M2 Macrophages ◽  
Mice Model ◽  
Repeat Domain ◽  
Relationship Of ◽  
Tumor Pathogenesis ◽  
The Relationship

Abstract Objective Exosomes, membranous nanovesicles, naturally bringing proteins, mRNAs, and microRNAs (miRNAs), play crucial roles in tumor pathogenesis. This study was to investigate the role of miR-155-3p from M2 macrophages-derived exosomes (M2-Exo) in promoting medulloblastoma (MB) progression by mediating WD repeat domain 82 (WDR82). Methods miR-155-3p expression was detected by RT-qPCR. The relationship of miR-155-3p with clinicopathological features of MB patients was analyzed. M2-Exo were isolated and identified by TEM, NTA and Western blot. CCK-8 assay, colony formation assay, flow cytometry, wound healing assay, and Transwell assay were performed to explore the role of miR-155-3p-enriched M2-Exo on the progression of MB cells. Luciferase assay were used to identify the relationship between miR-155-3p and WDR82. The effect of miR-155-3p-enriched M2-Exo on tumorigenesis of MB was confirmed by the xenograft nude mice model. Results miR-155-3p was up-regulated in MB tissues of patients and MB cell lines. High miR-155-3p expression was correlated with the pathological type and molecular subtype classification of MB patients. WDR82 was a direct target of miR-155-3p. miR-155-3p was packaged into M2-Exo. miR-155-3p-enriched M2-Exo promoted the progression of Daoy cells. miR-155-3p-enriched M2-Exo promoted in vivo tumorigenesis. Conclusion The study highlights that miR-155-3p-loaded M2-Exo enhances the growth of MB cells via down-regulating WDR82, which might provide a deep insight into MB mechanism.

scholarly journals Molecular and Cellular Impact of Inflammatory Extracellular Vesicles (EVs) Derived from M1 and M2 Macrophages on Neural Action Potentials

2020 ◽  
Vol 10 (7) ◽  
pp. 424
Author(s):  
Sarah Vakili ◽  
Taha Mohseni Ahooyi ◽  
Shadan S. Yarandi ◽  
Martina Donadoni ◽  
Jay Rappaport ◽  
...  
Keyword(s):  
Extracellular Vesicles ◽  
Immune Cells ◽  
Action Potentials ◽  
M2 Macrophage ◽  
M2 Macrophages ◽  
Neuronal Functions ◽  
The Brain ◽  
Macrophage Subtypes ◽  
M1 And M2 Macrophages

Several factors can contribute to neuroinflammatory disorders, such as cytokine and chemokines that are produced and released from peripherally derived immune cells or from locally activated cells such as microglia and perivascular macrophages in the brain. The primary function of these cells is to clear inflammation; however, following inflammation, circulating monocytes are recruited to the central nervous system (CNS). Monocyte-derived macrophages in the CNS play pivotal roles in mediating neuroinflammatory responses. Macrophages are heterogeneous both in normal and in pathological conditions due to their plasticity, and they are classified in two main subsets, classically activated (M1) or alternatively activated (M2). There is accumulating evidence suggesting that extracellular vesicles (EVs) released from activated immune cells may play crucial roles in mediating inflammation. However, a possible role of EVs released from immune cells such as M1 and M2 macrophages on neuronal functions in the brain is not known. In order to investigate the molecular and cellular impacts of macrophages and EVs released from macrophage subtypes on neuronal functions, we used a recently established in vitro M1 and M2 macrophage culture model and isolated and characterized EVs from these macrophage subtypes, treated primary neurons with M1 or M2 EVs, and analyzed the extracellular action potentials of neurons with microelectrode array studies (MEA). Our results introduce evidence on the interfering role of inflammatory EVs released from macrophages in interneuronal signal transmission processes, with implications in the pathogenesis of neuroinflammatory diseases induced by a variety of inflammatory insults.

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