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Shunsuke Itai, Shinji Yamada, Mika K Kaneko, Yukinari Kato
Podocalyxin (PODXL) is a type I transmembrane protein, which is highly glycosylated. PODXL is expressed in some types of human cancer tissues including oral, breast, and lung cancer tissues and may promote tumor growth, invasion, and metastasis. We previously produced PcMab-47, a novel anti-PODXL monoclonal antibody (mAb) which reacts with endogenous PODXL-expressing cancer cell lines and normal cells independently of glycosylation in Western blot, flow cytometry, and immunohistochemical analysis. In this study, we used enzyme-linked immunosorbent assay (ELISA), flow cytometry, and immunohistochemical analysis to determine the epitope of PcMab-47...
July 2018: Biochemistry and Biophysics Reports
Zhilong Zhang, Xinju Li, Liang Liu, Jiya Sun, Xu Wang, Zhiheng Zhao, Yuanqing Yang
Background: Diabetic nephropathy is a common and serious complication of diabetes and a major cause of end-stage renal disease. Tiaolipiwei acupuncture is a safe treatment approach that may be effective for lowering albuminuria in diabetic nephropathy. Yet, the exact mechanisms of this therapeutic effect are unclear. Methods: A rodent model of type 2 diabetic nephropathy (T2DN) was induced by a high-fat diet combined with low-dose streptozotocin. T2DN rats were treated with Tiaolipiwei acupuncture (ACU) for 4, 8, or 12 weeks...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
Ylbe Palacios de Franco, Karina Velazquez, Natalia Segovia, Gladys Sandoval, Estefania Gauto, Ylbe V Franco Palacios, Carlos R Franco Palacios
INTRODUCTION: preeclampsia can be associated with future renal disease. OBJECTIVES: To measure changes in renal function overtime in patients with preeclampsia. METHODS: urine and serum samples from eleven patients with preeclampsia and eight patients with a normal pregnancy were obtained during pregnancy, postpartum, and 3 years after delivery. Urine podocalyxin, protein, and serum creatinine were measured. RESULTS: after 3 years, there were no significant differences in urinary podocalyxin in patients with or without preeclampsia: 4...
May 17, 2018: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
Jing Zhang, Zhonglin Zhu, Huijing Wu, Zhilong Yu, Zeyin Rong, Zai Luo, Yiwei Xu, Kejian Huang, Zhengjun Qiu, Chen Huang
BACKGROUND: Podocalyxin-like 1 (PODXL) was reported to be closely associated with the development of various cancers, yet its functional roles and molecular mechanisms remain vague. The aim of our study was to investigate the clinical significance, biological function and molecular mechanism of PODXL in gastric cancer (GC). METHODS: The level of PODXL in GC tissues was detected applying GC tissues microarray, fresh GC tissues and public database (Oncomine). The invasion, metastasis and tumorigenesis role of PODXL were performed in vitro and in vivo...
May 10, 2018: Gastric Cancer
Xu Yang, Yiling Ding, Mengyuan Yang, Ling Yu, Yun Hu, Yali Deng
BACKGROUND/AIMS: Preeclampsia (PE) is a pregnancy-specific hypertensive disorder that is characterised by a high incidence of hypertension and proteinuria. Podocytes are involved in the formation of a split membrane, which is the last barrier preventing the leakage of protein into the urine. Nestin, a cytoskeleton protein, is expressed stably in podocytes. However, the association between the Nestin concentration in urine and the progression of PE and the role of Nestin in PE remains unclear...
April 19, 2018: Kidney & Blood Pressure Research
Xiaoyuan Zhang, Matthew C Williams, Otgonchimeg Rentsendorj, Felice D'Agnillo
Chemically modified hemoglobin (Hb)-based oxygen carriers are promising oxygen replacement therapeutics however their potential renal effects are not fully understood. Using a guinea pig exchange transfusion model, we examined the effects of glutaraldehyde-polymerized bovine hemoglobin (HbG) on the permeability and integrity of the glomerular filtration barrier (GFB), which is comprised of podocytes, fenestrated endothelium, and the glomerular basement membrane. HbG induced marked proteinuria characterized in part by the loss of high molecular weight proteins, including albumin, immunoglobulin, and transferrin, at 4 and 12 h post-infusion that resolved by 72 h...
April 22, 2018: Toxicology
Javier Perez-Hernandez, Maria D Olivares, Elena Solaz, Fernando Martinez, Sergio Martínez-Hervas, Gernot Pichler, Felipe J Chaves, Josep Redon, Raquel Cortes
OBJECTIVE: Hypertension-induced podocyte damage and the relationship with UAE is analyzed in diabetic and nondiabetic participants. PATIENTS AND METHODS: Sixty-four hypertensive patients, 30 diabetics, with glomerular filtration rate (eGFR) greater than 60 ml/min per 1.73 m were included. Urinary albumin excretion was measured in morning urine using a nephelometric immunoassay and expressed as albumin/creatinine ratio. Urinary pellets were obtained from fresh urine and mRNA was assessed by real-time quantitative PCR...
April 19, 2018: Journal of Hypertension
Shinji Yamada, Shunsuke Itai, Mika K Kaneko, Yukinari Kato
Lung cancer is one of the leading causes of cancer-related deaths in the world. Regardless of the advances in lung cancer treatments, the prognosis is still poor. Podocalyxin (PODXL) is a highly glycosylated type I transmembrane protein that is expressed in normal tissues, including the heart, pancreas, and breast. It is also found and used as a diagnostic marker in many cancers, such as renal, brain, breast, oral, and lung cancers. We previously developed specific and sensitive anti-PODXL monoclonal antibodies, PcMab-47 (mouse IgG1 , kappa) and its mouse IgG2a -type (47-mG2a ), both of which were suitable for immunohistochemical analyses of oral cancers...
April 2018: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
Shin Young Ahn, Dong Ki Kim, Seung Seok Han, Jung Hwan Park, Sung Joon Shin, Sang Ho Lee, Bum Soon Choi, Chun Soo Lim, Suhnggwon Kim, Ho Jun Chin
Background: Weight reduction is a lifestyle intervention that has been introduced for prevention and management of chronic kidney disease (CKD). We investigate the additive anti-proteinuric effect of weight reduction on the usage of angiotensin II receptor blockers (ARBs) and its potential mechanisms in hypertensive CKD patients. Methods: This study is a subanalysis of data from an open-label, randomized, controlled clinical trial. Among the 235 participants, 227 were assigned to subgroups according to changes in body weight...
March 2018: Kidney Research and Clinical Practice
Gracia Porras, Matilde S Ayuso, Consuelo González-Manchón
The highly sialoglycosylated extracellular domain of podocalyxin (Podxl) is a constituent of the endothelial glycocalyx of most blood vessels but it is unknown if Podxl plays a prominent role in the function of the glycocalyx as a regulator of leukocyte-endothelial adhesion. We have recently found that mice lacking Podxl in the vascular endothelium develop histological lesions compatible with severe vasculitis resulting in organ failure and premature death. In this work, we show that these mice have an increased quantity of resident leukocytes within the peritoneal cavity in both basal and inflammatory conditions...
June 2018: International Journal of Biochemistry & Cell Biology
Keisuke Taniuchi, Makiko Tsuboi, Masahiko Sakaguchi, Toshiji Saibara
Background: The aim of this study was to investigate the use of podocalyxin (PODXL) and secretoglobin family 1D, member 2 (SCGB1D2) expressions in whole blood as diagnostic biomarkers to distinguish between patients with pancreatic cancer and control participants, in comparison with serum cancer antigen 19-9 (CA19-9), which is the current clinical standard. Patients and methods: Flow cytometric analysis was performed to determine the expressions of PODXL and SCGB1D2 on the surface of cultured pancreatic cancer cells...
2018: OncoTargets and Therapy
Robert N Kerley, Cathal McCarthy
BACKGROUND: Early detection of pre-eclampsia remains one of the major focuses of antenatal obstetric care. There is often a delay in the diagnosis, mainly due to the non-specific nature of the condition. Podocytes which play a pivotal role in glomerular function become injured in pre-eclampsia leading to subsequent proteinuria. Our aim was to review available studies to determine the clinical utility of biomarkers of podocyte injury in pre-eclampsia. METHODS: We used QUADAS (Quality Assessment of Diagnostic Accuracy Studies) criteria to perform a systematic review of the literature to determine the clinical utility of podocyte injury biomarkers in predicting pre-eclampsia...
March 10, 2018: Pregnancy Hypertension
K Imakawa, R Bai, K Kusama
During the peri-implantation period, ruminant conceptuses go through rapid elongation, followed by their attachment to the uterine endometrial epithelial cells, during which interferon-tau (IFNT), a trophectodermal cytokine required for the process of maternal recognition of pregnancy, is expressed in a temporal and spatial manner. On d 22 (d 0 = day of estrus), 2 to 3 d after the initiation of bovine conceptus attachment to the uterine epithelium, when IFNT production begins to subside, the expression of molecules related to epithelial-mesenchymal transition, zinc finger E-box binding homeobox 1, snail family transcriptional repressor 2, N-cadherin and vimentin was found in the trophectoderm...
March 15, 2018: Journal of Animal Science
Ryo Hatano, Ai Takeda, Yukiko Abe, Kotoku Kawaguchi, Itsuro Kazama, Mitsunobu Matsubara, Shinji Asano
Ezrin is highly expressed in glomerular podocytes and is reported to form a multi-protein complex with scaffold protein Na+ /H+ exchanger regulatory factor 2 (NHERF2) and podocalyxin, a major sialoprotein. Podocalyxin-knockout mice died within 24 h of birth with anuric renal failure, whereas NHERF2-knockout mice show no apparent changes in the glomerular functions. However, the physiological roles of ezrin in glomerular podocytes remain unclear. Here, we investigated the importance of ezrin in the regulation of glomerular podocyte function using ezrin-knockdown mice (Vil2 kd/kd )...
March 14, 2018: Scientific Reports
Yun-Min Kook, Hyerim Kim, Sujin Kim, Chan Yeong Heo, Min Hee Park, Kangwon Lee, Won-Gun Koh
New blood vessel formation is essential for tissue regeneration to deliver oxygen and nutrients and to maintain tissue metabolism. In the field of tissue engineering, in vitro fabrication of new artificial vessels has been a longstanding challenge. Here we developed a technique to reconstruct a microvascular system using a polycaprolactone (PCL)/gelatin nanofibrous structure and a co-culture system. Using a simple electrospinning process, we fabricated three-dimensional mesh scaffolds to support the sprouting of human umbilical vein endothelial cells (HUVECs) along the electrospun nanofiber...
February 18, 2018: Nanomaterials
Li Ling, Libo Chen, Changning Zhang, Shuyan Gui, Haiyan Zhao, Zhengzhang Li
Abnormal expression of matrix metalloproteinase 9 (MMP9) is correlated with podocyte epithelial-to---mesenchymal transition (EMT) in diabetic nephropathy (DN). However, the mechanisms underlying this process are not well defined. Site‑specific demethylation may sustain high expression levels of target genes. In the present study, in order to investigate the association between DNA demethylation of MMP9 promoter and podocyte EMT in DN, human podocytes were cultured in high‑glucose (HG) medium and a rat model of DN was established by intraperitoneal injection of streptozotocin (STZ) to determine whether site‑specific demethylation of the MMP9 promoter was involved in regulating podocyte EMT in DN...
April 2018: Molecular Medicine Reports
Li Ling, Zhen Tan, Changning Zhang, Shuyan Gui, Yuanyuan Hu, Libo Chen
Diabetic nephropathy (DN) is one of the most common complications associated with type I and II diabetes mellitus. Long noncoding RNAs (lncRNAs) have been implicated in various physiological and pathological processes, and recent evidence has demonstrated that they are involved in the process of the epithelial‑mesenchymal transition (EMT). In the present study, the potential functions of lncRNA ENSRNOG00000037522 during the EMT process in DN were investigated. The results identified that the level of the lncRNA ENSRNOG00000037522 was significantly increased in kidney tissues collected from rats with streptozocin (STZ)‑induced DN accompanied by impairment of the glomerular podocytes...
May 2018: International Journal of Molecular Medicine
Tsung-Hsuan Lai, Fung-Wei Chang, Jun-Jie Lin, Qing-Dong Ling
This study investigates peptide components of L-selectin ligand (LSL) and their gene expressions in human endometrium during the natural menstrual cycle. We recruited 41 endometrial samples from reproductive-aged women with leiomyoma and undergoing hysterectomy and 11 endometrial samples from menopausal women as controls. Immunohistochemistry revealed strong MECA-79 expression from the early through the mid-secretory phase and low expression in menopausal endometrium. Five peptide components of LSL were detected in reproductive and menopausal endometrium by one-step quantitative RT-PCR: podocalyxin, endomucin, nepmucin, GlyCAM-1, and CD34...
January 23, 2018: Scientific Reports
Jia-Jia Zhu, Yi-Pu Chen, Min Yang, Bao-Li Liu, Jing Dong, Hong-Rui Dong, Hong-Liang Rui, Hong Cheng
Obesity-related glomerulopathy (ORG) is morphologically characterized by glomerulomegaly with or without observable focal segmental glomerulosclerosis under light microscope, with decreased podocyte density and number, and with increased foot‑process width observed under electron microscope. The severity of podocyte injury is correlated with the degree of proteinuria and renal dysfunction. However, the pathogenesis of ORG is not well understood. The aim of the present study was to explore the possible pathogenic role of aldosterone (ALDO) in ORG...
March 2018: Molecular Medicine Reports
Mayumi Shoji, Minoru Takemoto, Kazuki Kobayashi, Toshihiro Shoji, Satoka Mori, Jun-Ichi Sagara, Hiroyuki Kurosawa, Yoshiaki Hirayama, Kenichi Sakamoto, Takahiro Ishikawa, Masaya Koshizaka, Yoshiro Maezawa, Koutaro Yokote
Podocalyxin is a cell surface sialomucin, which is expressed in not only glomerular podocytes but also vascular endothelial cells. Urinary podocalyxin is used as a marker for glomerular disease. However, there are no reports describing serum podocalyxin (s-Podxl) levels. Therefore, the association between s-Podxl levels and clinical parameters were examined with 52 patients. s-Podxl level was evaluated using enzyme-linked immunosorbent assay. The median s-Podxl level was 14.2 ng/dL (interquartile range: 10...
January 10, 2018: Scientific Reports
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