Abstract:
:Background: Total flavonoids of Rhizoma Drynariae (TFRD), extracted from the kidney-tonifying traditional Chinese medicine Rhizoma Rrynariae, has been proved to be effective in treating osteoporosis, bone fractures and defects. However, pharmacological effects of TFRD on type H vessels, angiogenic-osteogenic coupling in distraction osteogenesis (DO) and the mechanism remain unclear. This study aims at investigating whether type H vessels exist in the DO model, effects of TFRD on angiogenic-osteogenic coupling and further elucidating the underlying mechanism. Methods: Rats models of DO and bone fracture (FR) were established, and then were separately divided into TFRD and control subgroups. Imageological and histological analyses were performed to assess bone and vessel formation. Immunofluorescent staining of CD31 and endomucin (Emcn) was conducted to determine type H vessel formation. Matrigel tube formation, ALP and Alizarin Red S staining assays were performed to test the effects of TFRD on angiogenesis or osteogenesis of endothelial precursor cells (EPCs) or bone marrow-derived mesenchymal stem cells (BMSCs). Additionally, expression levels of HIF-1α, VEGF, PDGF-BB, RUNX2 and OSX were determined by ELISA, qPCR or western blot, respectively. Results: The in vivo results indicated more formed type H vessels in DO groups than in FR groups and TFRD obviously increased the abundance of type H vessels. Moreover, groups with higher abundance of type H vessels showed better angiogenesis and osteogenesis outcomes. Further in vitro experiments showed that TFRD significantly promoted while blocking PDGF-BB remarkably suppressed the angiogenic activity of EPCs under stress conditions. The levels of p-AKT and p-ERK1/2, downstream mediators of the PDGF-BB pathway, were up-regulated by TFRD but blocked by function blocking anti-PDGF-BB antibody. In contrast, the activated AKT and ERK1/2 and corresponding tube formation were not affected by the HIF-1α inhibitor. Besides, blocking PDGF-BB inhibited the osteogenic differentiation of the stretched BMSCs, but TFRD enhanced the osteogenic activity of BMSCs and ameliorated the inhibition, with more calcium nodes, higher ALP activity and mRNA and protein levels of RUNX2 and OSX. Conclusion: Type H vessels exist in the DO model and TFRD enhances angiogenic-osteogenic coupling during DO by promoting type H vessel formation via PDGF-BB/PDGFR-β instead of HIF-1α/VEGF axis.
journal_name
Front Pharmacoljournal_title
Frontiers in pharmacologyauthors
Shen Z,Chen Z,Li Z,Zhang Y,Jiang T,Lin H,Huang M,Chen H,Feng J,Jiang Zdoi
10.3389/fphar.2020.503524subject
Has Abstractpub_date
2020-11-27 00:00:00pages
503524issn
1663-9812pii
503524journal_volume
11pub_type
杂志文章abstract::The ecto-5'-nucleotidase (ecto-5'NT/CD73) represents a crucial enzyme for endogenous adenosine generation. Several findings have shown that CD73 plays an important role in regulating vascular permeability and immune cell function. Adenosine 5'-(α,β-methylene)diphosphate (APCP) is a CD73 inhibitor, widely used as pharm...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2019.00775
更新日期:2019-07-11 00:00:00
abstract::The mTOR signaling pathway is abnormally activated in pancreatic cancer and is related to tumor glucose metabolism. However, its specific regulation mechanism is still unclear. Therefore, this study aims to investigate whether Sestrin2 affects the glucose metabolism of pancreatic cancer by modulating mTOR signal and t...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2020.580407
更新日期:2020-11-11 00:00:00
abstract::Hairy cell leukemia (HCL) is a chronic lymphoproliferative B-cell disorder where the B-RAF V600E mutation has been recently detected, as reported for solid neoplasias but not for other B-cell lymphomas. The digital droplet PCR (dd-PCR) is a molecular technique that, without standard references, is able to accurately q...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2016.00363
更新日期:2016-10-13 00:00:00
abstract::Natural products (NPs) are an important source for new drug discovery over the past decades, which have been demonstrated to be effectively used in cancer prevention, treatment, and adjuvant therapy. Many methods, such as the genomic and metabolomic approaches, immunochemistry, mass spectrometry, and chromatography, h...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章,评审
doi:10.3389/fphar.2019.01438
更新日期:2019-11-28 00:00:00
abstract::Non-alcoholic steatohepatitis (NASH) is characterized by inflammation and fibrosis, in addition to steatosis, of the liver, but no therapeutic agents have yet been established. The mast cell protease chymase can generate angiotensin II, matrix metalloproteinase-9 and transforming growth factor-β, all of which are asso...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章,评审
doi:10.3389/fphar.2018.00144
更新日期:2018-02-21 00:00:00
abstract::Tumors frequently arise as a result of an acquired genomic instability and the subsequent evolution of neoplastic populations with variable genomes. A barrier to the study of the somatic genetics of human solid tumors in vivo is the presence of admixtures of non-neoplastic cells with normal genomes in patient samples....
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2013.00002
更新日期:2013-01-28 00:00:00
abstract::Excessive bone resorption conducted by osteoclasts is considered as the main cause of osteoclast-related bone diseases such as osteoporosis. Therefore, the suppression of excessive osteoclast formation and function is one of the strategies to treat osteoclast-related bone diseases. Fumitremorgin C (Fum) is a mycotoxin...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2020.00238
更新日期:2020-03-10 00:00:00
abstract::Organic anion transporter 2 (OAT2) is likely important for renal and hepatic drug elimination. Three variants of the OAT2 peptide sequence have been described - OAT2 transcript variant 1 (OAT2-tv1), OAT2 transcript variant 2 (OAT2-tv2), and OAT2 transcript variant 3 (OAT2-tv3). Early studies helping to define the liga...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2015.00216
更新日期:2015-10-06 00:00:00
abstract::With multiple omics strategies being applied to several cancer genomics projects, researchers have the opportunity to develop a rational planning of targeted cancer therapy. The investigation of such numerous and diverse pharmacogenomic datasets is a complex task. It requires biological knowledge and skills on a set o...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章,评审
doi:10.3389/fphar.2016.00312
更新日期:2016-09-29 00:00:00
abstract:INTRODUCTION:Reliable and precise measurement of patient adherence to medications is feasible by incorporating a microcircuitry into pharmaceutical packages of various designs, such that the maneuvers needed to remove a dose of drug are detected, time-stamped, and stored. The principle is called "electronic medication ...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2013.00026
更新日期:2013-03-13 00:00:00
abstract::Mequindox (MEQ), belonging to quinoxaline-di-N-oxides (QdNOs), has been extensively used as a synthetic antibacterial agent. To evaluate the reproductive toxicity of MEQ, different concentrations of MEQ were administered to Wistar rats by feeding diets containing 0, 25, 55, 110, and 275 mg/kg, respectively. Each group...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2018.00870
更新日期:2018-08-17 00:00:00
abstract::Castration-resistant prostate cancer (CRPC) cells can resist many cellular stresses to ensure survival. There is an unmet medical need to fight against the multiple adaptive mechanisms in cells to achieve optimal treatment in patients. Para-toluenesulfonamide (PTS) is a small molecule that inhibited cell proliferation...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2018.01223
更新日期:2018-11-13 00:00:00
abstract::We evaluated the prevalence of and risk factors for hypersensitivity reactions related to carboplatin, which is commonly used to treat gynecological malignancies. All women with pathologically documented ovarian, fallopian tube, or primary peritoneal cancer treated with carboplatin alone or a carboplatin-based combina...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2017.00800
更新日期:2017-11-06 00:00:00
abstract::Uterine leiomyomas are the most common benign neoplasms in women of reproductive age. However, non-surgical treatments for uterine myomas have not been fully evaluated. In Korea and China, Gyejibongnyeong-hwan (GBH) is widely used to treat gynecological diseases. Thus, we investigated the effects of GBH in human uteri...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2019.01105
更新日期:2019-09-25 00:00:00
abstract::Cystic Fibrosis (CF) is a recessive genetic disease due to mutations of the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) gene encoding the CFTR chloride channel. The ion transport abnormalities related to CFTR mutation generate a dehydrated airway surface liquid (ASL) layer, which is responsible for an a...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章,评审
doi:10.3389/fphar.2020.01290
更新日期:2020-09-02 00:00:00
abstract::Lapses in the graft-vs.-host disease (GVHD) prophylaxis and side effects of current standard care following allogeneic hematopoietic stem cell transplantation (allo-HSCT) call for novel regimens. Traditional approaches targeting T cells showed limited success in preventing acute GVHD (aGVHD). System medicine showed pr...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2018.01440
更新日期:2018-12-13 00:00:00
abstract::The trace amine-associated receptor 1 (TAAR1) is expressed by dopaminergic neurons, but the precise influence of trace amines upon their functional activity remains to be fully characterized. Here, we examined the regulation of tyrosine hydroxylase (TH) by tyramine and beta-phenylethylamine (β-PEA) compared to 3-iodot...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2018.00166
更新日期:2018-03-01 00:00:00
abstract::Introduction: Chronic hepatitis B (HBV) and C (HCV) virus infection is associated with the activation of hepatic stellate cells (HSCs) toward a myofibroblastic phenotype, resulting in excessive deposition of extracellular matrix, the development of liver fibrosis, and its progression toward cirrhosis. The gold standar...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2017.00056
更新日期:2017-02-09 00:00:00
abstract::The use of nanomaterials to modulate the tumor microenvironment has great potential to advance outcomes in patients with lung cancer. Nanomaterials can be used to prolong the delivery time of therapeutics enabling their specific targeting to tumors while minimizing and potentially eliminating cytotoxic effects. Using ...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章,评审
doi:10.3389/fphar.2018.00759
更新日期:2018-07-16 00:00:00
abstract::The skin is the first line of defense against pathogen and other environmental pollutant. The body is constantly exposed to reactive oxygen species (ROS) that stimulates inflammatory process in the skin. Many studies have linked ROS to various inflammatory skin diseases. Patients with skin diseases face various challe...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章,评审
doi:10.3389/fphar.2020.01086
更新日期:2020-07-31 00:00:00
abstract:Background:5α-reductase type 2 deficiency (5αRD) is an autosomal recessive hereditary disease of the group of 46, XY disorders of sex development (DSD). Objective:To study the growth pattern in Chinese pediatric patients with 5αRD. Subjects:Data were obtained from 141 patients with 5αRD (age: 0-16 years old) who visi...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2019.00173
更新日期:2019-03-15 00:00:00
abstract::Lapatinib, targeting the human epidermal growth factor receptor family members HER1 and HER2, has been approved by the US Food and Drug Administration for use in metastatic HER2-positive breast cancer. However, resistance to lapatinib remains a common challenge to HER2-positive metastatic breast cancer. Until now, the...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2020.577150
更新日期:2020-09-04 00:00:00
abstract::The psoralen-related compound, 4,6,4'-trimethylangelicin (TMA) potentiates the cAMP/PKA-dependent activation of WT-CFTR and rescues F508del-CFTR-dependent chloride secretion in both primary and secondary airway cells homozygous for the F508del mutation. We recently demonstrated that TMA, like lumacaftor (VX-809), stab...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2018.00719
更新日期:2018-07-04 00:00:00
abstract::Neonatal epileptic encephalopathy (NEE), as a result of pyridoxine 5'-phosphate oxidase (PNPO) deficiency, is a rare neural disorder characterized by intractable seizures and usually leads to early infant death. The clinical phenotypes do not respond to antiepileptic drugs but are alleviated in most cases by giving la...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2019.01086
更新日期:2019-09-20 00:00:00
abstract::Over 1 million cases of scorpion stings are estimated every year, whereas current treatment is limited to antivenom serum combined with supportive therapy. Tityus serrulatus scorpion venom (TsV) is composed of diverse molecules, including toxins that induce a catecholamine storm and mediate classical symptoms of scorp...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2019.00171
更新日期:2019-03-01 00:00:00
abstract:BACKGROUND:The dried root of Paeonia lactiflora Pall. (PLP) is a classical Chinese herbal medicine that has been used to treat hepatic disease for 1000s of years. Our previous work suggested that PLP can be used to treat hepatitis with severe cholestasis. This study explored the mechanism by which PLP affects ANIT-indu...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2016.00014
更新日期:2016-02-04 00:00:00
abstract::Pregnant women appear to be more susceptible to infectious diseases than women in reproductive age. According to the California Department of Public Health pregnant women were 9.6-folds more likely to be hospitalized during the 2009 influenza outbreak when compared to non-pregnant women in reproductive age. In contras...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2020.01062
更新日期:2020-07-16 00:00:00
abstract:Background:As the original compound of many podophyllotoxin derivatives, podophyllotoxin has a beneficial antitumor effect. The mechanism of podophyllotoxin activity in triple-negative breast cancer still needs to be explored. Methods:We used cell proliferation assay, scratch and transwell experiments, and cell cycle ...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2020.01211
更新日期:2020-08-07 00:00:00
abstract::Red blood cells (RBCs) from patients with type 2 diabetes mellitus (T2DM) induce endothelial dysfunction and impair cardiac function following ischemia via increase in RBC arginase and oxidative stress. Here, we aimed to elucidate whether the effect of RBC-mediated cardiac impairment following ischemia and endothelial...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2019.00861
更新日期:2019-08-02 00:00:00
abstract::Background: Details of the extraction and purification procedure can have a profound impact on the composition of plant-derived extracts, and thus on their efficacy and safety. So far, studies with head-to-head comparison of the pharmacology of Ginkgo extracts rendered by different procedures have been rare. Objective...
journal_title:Frontiers in pharmacology
pub_type: 杂志文章
doi:10.3389/fphar.2018.00848
更新日期:2018-08-03 00:00:00