scholarly journals The potential renal toxicity of silver nanoparticles after repeated oral exposure and its underlying mechanisms

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Hamed Nosrati ◽  
Manijeh Hamzepoor ◽  
Maryam Sohrabi ◽  
Massoud Saidijam ◽  
Mohammad Javad Assari ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Molecular Mechanisms ◽  
Renal Toxicity ◽  
Periodic Acid ◽  
Critical Role ◽  
Oral Exposure ◽  
Control Group ◽  
Rt Pcr ◽  
Periodic Acid Schiff

Abstract Background Silver nanoparticles (AgNPs) can accumulate in various organs after oral exposure. The main objective of the current study is to evaluate the renal toxicity induced by AgNPs after repeated oral exposure and to determine the relevant molecular mechanisms. Methods In this study, 40 male Wistar rats were treated with solutions containing 30, 125, 300, and 700 mg/kg of AgNPs. After 28 days of exposure, histopathological changes were assessed using hematoxylin-eosin (H&E), Masson’s trichrome, and periodic acid-Schiff (PAS) staining. Apoptosis was quantified by TUNEL and immunohistochemistry of caspase-3, and the level of expression of the mRNAs of growth factors was determined using RT-PCR. Results Histopathologic examination revealed degenerative changes in the glomeruli, loss of tubular architecture, loss of brush border, and interrupted tubular basal laminae. These changes were more noticeable in groups treated with 30 and 125 mg/kg. The collagen intensity increased in the group treated with 30 mg/kg in both the cortex and the medulla. Apoptosis was much more evident in middle-dose groups (i.e., 125 and 300 mg/kg). The results of RT-PCR indicated that Bcl-2 and Bax mRNAs upregulated in the treated groups (p < 0.05). Moreover, the data related to EGF, TNF-α, and TGF-β1 revealed that AgNPs induced significant changes in gene expression in the groups treated with 30 and 700 mg/kg compared to the control group. Conclusion Our observations showed that AgNPs played a critical role in in vivo renal toxicity.

scholarly journals The Potential Toxicity of Silver Nanoparticles After Repeated Oral Exposure and Underlying Mechanisms in Kidney of Rat Model

2021 ◽  
Author(s):  
Hamed Nosrati ◽  
Manijeh Hamzepoor ◽  
Maryam Sohrabi ◽  
Massoud Saidijam ◽  
Mohammad Javad Assari ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Critical Role ◽  
Oral Exposure ◽  
Rt Pcr ◽  
Histological Changes ◽  
Tnf Α ◽  
Male Wistar Rats ◽  
Pas Staining ◽  
Underlying Mechanisms

Abstract Background: Silver nanoparticles (AgNPs) can accumulate in various organs after orally exposure. This study evaluated the toxicity of AgNPs in vivo on histological changes, apoptosis and expression of growth factor genes in kidney. Methods: The male Wistar rats were treated orally with 30,125,300, and 700 mg/kg silver nanoparticles solution. After 28 days of exposure, histopatological changes were assessed by hematoxylin-eosin, trichrome Masson, and Pas staining. Apoptosis was quantified by TUNEL and immunohistochemistry of caspase-3, and level of expression of growth factors mRNAs were determined using RT-PCR. Results: Histopathologic examination revealed degenerative changes in the glomeruli, loss of tubular architecture, loss of brush border and interrupted tubular basal laminae. These changes were more noticeable in 30, and 125 mg/kg groups. The collagen intensity was increased in 30 treated groups in both cortex and medulla. Apoptosis was much more evident in middle dose groups (125 and 300 mg/kg). The results of RT-PCR indicated that Bcl-2 and Bax mRNAs upregulated in treated groups (p<0.05) and data of the EGF, TNF-α, and TGF-β1 revealed that AgNPs induced more enormous changes in gene expression in 30 and 700 mg/kg groups compared to control. Conclusion: Our observations showed that the AgNPs played a critical role in their in vivo renal toxicity.

MO342ADMINISTRATION OF ASTRAGALUS MEMBRANACEUS PREVENTED CISPLATIN-INDUCED AKI, ESPECIALLY IN OLD MICE

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Kagemasa Kajiwara ◽  
Makoto Arai ◽  
Tatsuya Nogami ◽  
Yoshinobu Nakada ◽  
Go Nagashima ◽  
...  
Keyword(s):  
Technical Assistance ◽  
Periodic Acid ◽  
Critical Role ◽  
Age Groups ◽  
Astragalus Membranaceus ◽  
Control Group ◽  
Blood Collection ◽  
Periodic Acid Schiff ◽  
Old Mice ◽  
Young Mice

Abstract Background and Aims Recent findings suggest that acute kidney injury (AKI), which occurs frequently but is believed to be completely reversible, is an important factor driving chronic kidney disease (CKD) pathogenesis or progression. We have investigated Astragalus membranaceus (AM), which has been shown to have various pharmacological effects on several organs (see http://nccih.nih.gov/health/astragalus). However, up to now, little evidence of its effectiveness against CKD has been provided. We hypothesized that AM could target AKI and that sustainable prevention of AKI by AM might delay pathogenesis and progression of CKD. Here we focused on AKI as a promoter of CKD progression in order to examine the effects of AM histologically and histochemically in mice. Method Here we used two groups of female C57BL/6 mice: one that was aged 12 weeks and one that was aged 52 weeks. After the first blood collection (of approximately 0.2 ml), the two age groups of mice were administered AM powder mixed with sterilized 0.5% methylcellulose 400 (w/v) (the AM-administered group) or sterilized 0.5% methylcellulose 400 (the control group), respectively. Two hours after the administration, 0.5 mg/ml cisplatin (20 mg/kg or 14 mg/kg) or 0.9% NaCl were injected intraperitoneally. Three days after injection, blood was collected and kidneys were harvested. We measured blood urea nitrogen (BUN) and creatinine (CRE) to detect AKI, and assessed histological change in dissected kidney sections stained with Hematoxylin-Eosin and Periodic acid-Schiff and histochemical change in sections stained with anti-CD3 and anti-CD68 antibodies. Generally, 20 mg/kg cisplatin was used to induce AKI in the experimental model. Results Injection with 20 mg/kg cisplatin was shown to induce AKI pathology in young mice and shorten survival in old mice, and AM administration was unable to improve AKI pathology in young mice or survival in old mice. Next, we injected mice in both age groups with 14 mg/kg cisplatin. We found that this dose significantly increased serum BUN or CRE and caused histological damage in renal tubule epithelial cells and glomeruli in old mice but not in young mice, which showed no pathological change. And Astragalus treatment in advance almost totally prevented these pathological changes in old mice. The AKI generated in old mice with 14 mg/kg of cisplatin was significantly normalized by pretreatment with AM. Next, histochemical analysis of renal CD3- and CD68-positive cells revealed both were increased in the murine AKI model induced by injection with 20 mg/kg cisplatin. Interestingly, in old mice, 14 mg/kg cisplatin-AKI increased CD3-positive cells but not CD68-positive cells. These findings suggest that AM may improve daily minor disturbances, such as AKI, that cause pathogenesis and progression of CKD especially in old age. Conclusion AM administration, at least in part, can reduce day-to-day AKI occurrence, but is ineffective in young kidneys. However, sustained use of AM could play a critical role in prolonging the activity of aged kidneys. Acknowledgments We thank the Education and Research Support Center, Tokai University, for technical assistance. This work was supported by a grant from the Japan Society for Promotion of Science JSPS KAKENHI KIBAN-C (Grant Number 16K09259) and by Tokai university general research organization grant.

scholarly journals Ectopic atrial arrhythmias arising from canine thoracic veins during in vivo stellate ganglia stimulation

2008 ◽  
Vol 295 (2) ◽  
pp. H691-H698 ◽  
Author(s):  
Alex Y. Tan ◽  
Shengmei Zhou ◽  
Byung Chun Jung ◽  
Masahiro Ogawa ◽  
Lan S. Chen ◽  
...  
Keyword(s):  
Pulmonary Vein ◽  
Sinus Node ◽  
Periodic Acid ◽  
Sympathetic Innervation ◽  
Sympathetic Nerves ◽  
Atrial Arrhythmias ◽  
Periodic Acid Schiff ◽  
Stellate Ganglia ◽  
Ectopic Beats

The purpose of the present study was to determine whether thoracic veins may act as ectopic pacemakers and whether nodelike cells and rich sympathetic innervation are present at the ectopic sites. We used a 1,792-electrode mapping system with 1-mm resolution to map ectopic atrial arrhythmias in eight normal dogs during in vivo right and left stellate ganglia (SG) stimulation before and after sinus node crushing. SG stimulation triggered significant elevations of transcardiac norepinephrine levels, sinus tachycardia in all dogs, and atrial tachycardia in two of eight dogs. Sinus node crushing resulted in a slow junctional rhythm (51 ± 6 beats/min). Subsequent SG stimulation induced 20 episodes of ectopic beats in seven dogs and seven episodes of pulmonary vein tachycardia in three dogs (cycle length 273 ± 35 ms, duration 16 ± 4 s). The ectopic beats arose from the pulmonary vein ( n = 11), right atrium ( n = 5), left atrium ( n = 2), and the vein of Marshall ( n = 2). There was no difference in arrhythmogenic effects of left vs. right SG stimulation (13/29 vs. 16/29 episodes, P = nonsignificant). There was a greater density of periodic acid Schiff-positive cells ( P < 0.05) and sympathetic nerves ( P < 0.05) at the ectopic sites compared with other nonectopic atrial sites. We conclude that, in the absence of a sinus node, thoracic veins may function as subsidiary pacemakers under heightened sympathetic tone, becoming the dominant sites of initiation of focal atrial arrhythmias that arise from sites with abundant sympathetic nerves and periodic acid Schiff-positive cells.

scholarly journals The AF-6 Homolog Canoe Acts as a Rap1 Effector During Dorsal Closure of the Drosophila Embryo

Genetics ◽  
2003 ◽  
Vol 165 (1) ◽  
pp. 159-169
Author(s):  
Benjamin Boettner ◽  
Phoebe Harjes ◽  
Satoshi Ishimaru ◽  
Michael Heke ◽  
Hong Qing Fan ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Genetic Interaction ◽  
Critical Role ◽  
Adherens Junction ◽  
Small Gtpases ◽  
Drosophila Embryo ◽  
Dorsal Closure ◽  
Cell Sheets ◽  
Jnk Pathway

Abstract Rap1 belongs to the highly conserved Ras subfamily of small GTPases. In Drosophila, Rap1 plays a critical role in many different morphogenetic processes, but the molecular mechanisms executing its function are unknown. Here, we demonstrate that Canoe (Cno), the Drosophila homolog of mammalian junctional protein AF-6, acts as an effector of Rap1 in vivo. Cno binds to the activated form of Rap1 in a yeast two-hybrid assay, the two molecules colocalize to the adherens junction, and they display very similar phenotypes in embryonic dorsal closure (DC), a process that relies on the elongation and migration of epithelial cell sheets. Genetic interaction experiments show that Rap1 and Cno act in the same molecular pathway during DC and that the function of both molecules in DC depends on their ability to interact. We further show that Rap1 acts upstream of Cno, but that Rap1, unlike Cno, is not involved in the stimulation of JNK pathway activity, indicating that Cno has both a Rap1-dependent and a Rap1-independent function in the DC process.

scholarly journals Hydroxychloroquine Synergizes With The PI3K Inhibitor BKM120 to Exhibit Antitumor Efficacy Independent of Autophagy

2021 ◽  
Author(s):  
Xin Peng ◽  
Shaolu Zhang ◽  
Wenhui Jiao ◽  
Zhenxing Zhong ◽  
Yuqi Yang ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Cell Biology ◽  
Molecular Mechanisms ◽  
Critical Role ◽  
Single Agent ◽  
Antitumor Efficacy ◽  
Antitumor Effects ◽  
Autophagy Inhibitor

Abstract Background: The critical role of phosphoinositide 3-kinase (PI3K) activation in tumor cell biology has prompted massive efforts to develop PI3K inhibitors (PI3Kis) for cancer therapy. However, recent results from clinical trials have shown only a modest therapeutic efficacy of single-agent PI3Kis in solid tumors. Targeting autophagy has controversial context-dependent effects in cancer treatment. As a FDA-approved lysosomotropic agent, hydroxychloroquine (HCQ) has been well tested as an autophagy inhibitor in preclinical models. Here, we elucidated the novel mechanism of HCQ alone or in combination with PI3Ki BKM120 in the treatment of cancer.Methods: The antitumor effects of HCQ and BKM120 on three different types of tumor cells were assessed by in vitro PrestoBlue assay, colony formation assay and in vivo zebrafish and nude mouse xenograft models. The involved molecular mechanisms were investigated by MDC staining, LC3 puncta formation assay, immunofluorescent assay, flow cytometric analysis of apoptosis and ROS, qRT-PCR, Western blot, comet assay, homologous recombination (HR) assay and immunohistochemical staining. Results: HCQ significantly sensitized cancer cells to BKM120 in vitro and in vivo. Interestingly, the sensitization mediated by HCQ could not be phenocopied by treatment with other autophagy inhibitors (Spautin-1, 3-MA and bafilomycin A1) or knockdown of the essential autophagy genes Atg5/Atg7, suggesting that the sensitizing effect might be mediated independent of autophagy status. Mechanistically, HCQ induced ROS production and activated the transcription factor NRF2. In contrast, BKM120 prevented the elimination of ROS by inactivation of NRF2, leading to accumulation of DNA damage. In addition, HCQ activated ATM to enhance HR repair, a high-fidelity repair for DNA double-strand breaks (DSBs) in cells, while BKM120 inhibited HR repair by blocking the phosphorylation of ATM and the expression of BRCA1/2 and Rad51. Conclusions: Our study revealed that HCQ and BKM120 synergistically increased DSBs in tumor cells and therefore augmented apoptosis, resulting in enhanced antitumor efficacy. Our findings provide a new insight into how HCQ exhibits antitumor efficacy and synergizes with PI3Ki BKM120, and warn that one should consider the “off target” effects of HCQ when used as autophagy inhibitor in the clinical treatment of cancer.

EFFECTS OF MELATONIN AND CURCUMIN TREATMENTS ON THE OVARIUM IN KIDNEY ISCHEMIA-REPERFUSION INJURY: A HISTOPATHOLOGICAL INVESTIGATION

2021 ◽  
Vol 6 (15) ◽  
pp. 45-51
Author(s):  
Ayşe Köse Vuruşkan ◽  
Nur ELAGÜL ◽  
Tansel SAPMAZ ◽  
Sude TOPKARAOĞLU
Keyword(s):  
Ischemia Reperfusion Injury ◽  
Ischemia Reperfusion ◽  
Periodic Acid ◽  
Control Group ◽  
Histological Structure ◽  
Periodic Acid Schiff ◽  
Group I ◽  
Vascular Congestion ◽  
Reperfusion Period ◽  
Female Wistar Rats

Aim: We aimed to investigate how bilateral renal ischemia-reperfusion (I/R) damage affects the ovaries as a distant organ and the effects of melatonin (MEL), curcumin (CUR) and melatonin+curcumin (MEL+CUR) treatments on I/R damage. Material and Method: 42 female Wistar rats were used in the study. Rats were divided into 6 groups and study was designed as follows: Control group (G1) – opening and closing the abdomen only (sham surgery group) –, I/R group (G2) – 45 min ischemia followed by 2 h reperfusion –, I/R+MEL group (G3) – 45 min ischemia, intraperitoneal (i.p) 20 mg/kg MEL injection 5 min before reperfusion, followed by 2 h reperfusion –, I/R+CUR group (G4) – 45 min ischemia, 5 min before reperfusion i.p 200 mg/kg CUR injection and then 2 hours reperfusion –, I/R+MEL+CUR group (G5) – 45 min ischemia, 5 min before reperfusion i.p 20 mg/kg MEL and 200 mg/kg CUR injection, followed by 2 hours reperfusion –. At the end of the reperfusion period, the rats were sacrificed. Right ovaries were removed from the peritoneum and fixed. After fixation and follow-up, tissue sections were stained with hematoxylin&eosin (H&E), Periodic acid-Schiff (PAS)+Hematoxylin (PAS+H) and Masson’s trichrome stains. Pathological changes were scored and statistically evaluated. Results: Compared to the control group, there was a decrease in hemorrhage, vascular congestion, follicular degeneration, inflammation, interstitial edema, vasodilation and growing follicle numbers in all groups; these changes were severe in the G2 group; Mild to moderate severity was observed in the G3, G4 and G5 groups. Conclusion: Renal I/R damage significantly affects the ovaries histopathologically. MEL, CUR, and MEL+CUR partially preserve the histological structure, but MEL treatment seems to be more effective than CUR treatment.

FC 006PP2A PHOSPHATASE INHIBITION IS ANTI-FIBROTIC THROUGH SER77 PHOSPHORYLATION-MEDIATED ARNT/ARNT HOMODIMER FORMATION

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Gunsmaa Nyamsuren ◽  
Gregor Christof Rapp ◽  
Björn Tampe ◽  
Michael Zeisberg
Keyword(s):  
Molecular Mechanisms ◽  
Therapeutic Potential ◽  
Critical Role ◽  
Phosphorylation Site ◽  
Receptor Expression ◽  
Proximity Ligation Assay ◽  
Proximity Ligation ◽  
Aryl Hydrocarbon ◽  
Ureter Obstruction

Abstract Background and Aims Aryl hydrocarbon receptor nuclear translocator (ARNT) mediates anti-fibrotic activity in kidney and liver through induction of ALK3-receptor expression and subsequently increased Smad1/5/8 signaling. While expression of ARNT can be pharmacologically induced by sub-immunosuppressive doses of FK506 or by GPI1046, its anti-fibrotic activity is only realized when ARNT-ARNT homodimers form, as opposed to formation of ARNT-AHR or ARNT-HIF1α heterodimers. Mechanisms underlying ARNTs dimerization decision to specifically form ARNT-ARNT homodimers and possible cues to specifically induce ARNT homodimerization have been previously unknown. We here aimed to elucidate the molecular mechanisms underlying control of ARNT dimerization decision and to explore its therapeutic potential. Method We analyzed dimerization of recombinant and native ARNT by immunoprecipitation, MALDI-TOF mass spectrometry, and LS-MS/MS analysis and proximity ligation assay. Phosphorylation sites were mapped through generation of phosphorylation site mutants and through pharmacological inhibition. For in vivo analysis we challenged mice with model of unilateral ureter obstruction and carbon tetrachloride to induce fibrosis in kidney and liver. Results Here we report that inhibition of PP2A phosphatase activity increases intracellular accumulation of ARNT-ARNT homodimers. This effect is dependent on enhanced ARNT-ARNT homodimerization and decreased ARNT proteolytic degradation, but independent of ARNT transcription (which remains unchanged upon PP2A inhibition). We further identify that Ser77 phosphorylation plays a critical role in ARNT homodimerization, as ARNT-ARNT homodimers do not form with Ser77/Asp-mutant ARNT proteins. In light of previous studies which identified anti-fibrotic activity upon increased ARNT expression, we further demonstrate attenuated fibrosis upon monotherapy with the PP2A inhibitor LB100, and additive anti-fibrotic activities upon combination with pharmacological inducers of ARNT expression FK506 or GPI1046 in murine models of kidney and liver fibrosis. Conclusion Our study provides additional evidence for the anti-fibrotic activity of ARNT and reveals Ser77 phosphorylation as a novel pharmacological target to realize the therapeutic potential of increased ARNT transactivation activity.

scholarly journals Hydroxytyrosol Plays Antiatherosclerotic Effects through Regulating Lipid Metabolism via Inhibiting the p38 Signal Pathway

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Xinxin Zhang ◽  
Yating Qin ◽  
Xiaoning Wan ◽  
Hao Liu ◽  
Chao Iv ◽  
...  
Keyword(s):  
Lipid Metabolism ◽  
Molecular Mechanisms ◽  
Cholesterol Metabolism ◽  
Fold Increase ◽  
Heart Tissue ◽  
Control Group ◽  
Atherosclerotic Lesions ◽  
Serum Crp

Purpose. Hydroxytyrosol (HT) processes multiaspect pharmacological properties such as antithrombosis and antidiabetes. The aim of this study was to explore the antistherosclerotic roles and relevant mechanisms of HT. Methods. Male apoE-/- mice were randomly divided into 2 groups: the control group and the HT group (10 mg/kg/day orally). After 16 weeks, blood tissue, heart tissue, and liver tissue were obtained to detect the atherosclerotic lesions, histological analysis, lipid parameters, and inflammation. And the underlying molecular mechanisms of HT were also studied in vivo and in vitro. Results. HT administration significantly reduced the extent of atherosclerotic lesions in the aorta of apoE-/- mice. We found that HT markedly lowered the levels of serum TG, TC, and LDL-C approximately by 17.4% (p=0.004), 15.2% (p=0.003), and 17.9% (p=0.009), respectively, as well as hepatic TG and TC by 15.0% (p<0.001) and 12.3% (p=0.003), respectively, while inducing a 26.9% (p=0.033) increase in serum HDL-C. Besides, HT improved hepatic steatosis and lipid deposition. Then, we discovered that HT could regulate the signal flow of AMPK/SREBP2 and increase the expression of ABCA1, apoAI, and SRBI. In addition, HT reduced the levels of serum CRP, TNF-α, IL-1β, and IL-6 approximately by 23.5% (p<0.001), 27.8% (p<0.001), 18.4% (p<0.001), and 19.1% (p<0.001), respectively, and induced a 1.4-fold increase in IL-10 level (p=0.014). Further, we found that HT might regulate cholesterol metabolism via decreasing phosphorylation of p38, followed by activation of AMPK and inactivation of NF-κB, which in turn triggered the blockade of SREBP2/PCSK9 and upregulation of LDLR, apoAI, and ABCA1, finally leading to a reduction of LDL-C and increase of HDL-C in the circulation. Conclusion. Our results provide the first evidence that HT displays antiatherosclerotic actions via mediating lipid metabolism-related pathways through regulating the activities of inflammatory signaling molecules.

scholarly journals AT-MSCs Antifibrotic Activity is Improved by Eugenol through Modulation of TGF-β/Smad Signaling Pathway in Rats

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 348 ◽  
Author(s):  
Moustafa Fathy ◽  
Motonori Okabe ◽  
Heba M. Saad Eldien ◽  
Toshiko Yoshida
Keyword(s):  
Combination Treatment ◽  
Molecular Mechanisms ◽  
Nuclear Antigen ◽  
Control Group ◽  
Type Iii Collagen ◽  
Fibrinogen Concentration ◽  
Hepatic Expression ◽  
Tgf Β1

For hepatic failure, stem cell transplantation has been chosen as an alternative therapy, especially for mesenchymal stem cells (MSCs). The aim of this study was to investigate the effect of eugenol (EUG) on the in vivo antifibrotic activity of adipose tissue-derived MSCs (AT-MSCs) and the underlying mechanism. After characterization of MSCs, rats were divided into five groups, Group 1 (normal control), Group 2 (CCl4), Group 3 (CCl4 + AT-MSCs), Group 4 (CCl4 + EUG) and Group 5 (CCl4 + AT-MSCs + EUG). Biochemical and histopathological investigations were performed. Furthermore, expression of type 1 collagen, α-SMA, TGF-β1, Smad3 and P-Smad3 was estimated. Compared to the single treatment with AT-MSCs, the combination treatment of the fibrotic rats with AT-MSCs and EUG significantly improved the plasma fibrinogen concentration, IL-10 level and proliferating cell nuclear antigen expression, and also significantly decreased the serum levels of liver enzymes, IL-6, IL-1β, TNF-α, type III collagen, hyaluronic acid, hydroxyproline and the TGF-β growth factor. Furthermore, the combination treatment significantly decreased the hepatic expression of fibrotic markers genes (Type 1 collagen and α-SMA) and proteins (α-SMA, TGF-β1 and phospho-Smad3) more than the treatment with AT-MSCs alone. We demonstrated that the combination treatment with EUG and AT-MSCs strongly inhibited the advancement of CCl4-induced hepatic fibrosis, compared with AT-MSCs alone, through TGF-β/Smad pathway inhibition. This approach is completely novel, so more investigations are necessary to improve our perception of the underlying molecular mechanisms accountable for the effects of EUG on the antifibrotic potential of AT-MSCs.

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