Decellularized Human Umbilical Cord Wharton Jelly Scaffold Improves Tendon Regeneration in a Rabbit Rotator Cuff Tendon Defect Model

2021 ◽  
pp. 036354652110557
Author(s):  
Zhiguo Yuan ◽  
Fuyang Cao ◽  
Cangjian Gao ◽  
Zhen Yang ◽  
Quanyi Guo ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Umbilical Cord ◽  
Tendon Healing ◽  
Negative Control Group ◽  
Negative Control ◽  
Control Group ◽  
Rotator Cuff Tendon ◽  
Tendon Regeneration ◽  
Tendon Defect

Background: Owing to limited self-healing capacity, failure of rotator cuff tendon healing is a common complication after surgery. Biological scaffolds have garnered attention owing to their potential to enhance healing outcomes. Purpose: To verify the effect of the decellularized umbilical cord Wharton jelly (DUCWJ) scaffold as a bridging scaffold in a rabbit model of acute rotator cuff tendon defect. Study Design: Controlled laboratory study. Methods: We fabricated a DUCWJ scaffold using a physicochemical decellularized method, evaluating changes in the umbilical cord Wharton jelly before and after decellularization. Scanning electron microscopy and biomechanical testing were performed to determine the microstructure and mechanical properties. We assessed cytocompatibility and cell regulatory behavior of the scaffold toward tendon stem/progenitor cells (TSPCs). A supraspinatus tendon defect was created in 54 New Zealand White rabbits, allocated to the DUCWJ scaffold repair group and the negative control group (without scaffold). Histology, reverse transcription polymerase chain reaction, and biomechanical tensile strength were assessed at 4, 8, and 12 weeks postoperatively. Results: Decellularization completely removed cells from the umbilical cord Wharton jelly, retained a considerable amount of glycosaminoglycan and collagen, and preserved the microstructure and tensile strength. The DUCWJ scaffold facilitated migration and proliferation of TSPCs in vitro. Tendon-related gene expression revealed that the DUCWJ scaffold could maintain the tenocyte phenotype of TSPCs. In the in vivo study, the DUCWJ scaffold improved tendon healing and enhanced the biomechanical strength of repaired tendons. Histological evaluation scores of the DUCWJ group were significantly higher than those of the negative control at 4, 8, and 12 weeks after surgery ( P < .05). In repaired tendon tissues, reverse transcription polymerase chain reaction findings revealed that the DUCWJ scaffold stimulated tendon development and maturation. Furthermore, an overall increase in ultimate load and tensile modulus was noted over time; the DUCWJ group presented better results than the negative control group ( P < .05). Conclusion: The DUCWJ scaffold has an excellent 3-dimensional porous structure, good biocompatibility, and fundamental biomechanical characteristics, and it promotes migration, attachment, and proliferation of TSPCs. The in vivo animal study demonstrated that the DUCWJ scaffold has potential for tendon regeneration in an acute rotator cuff tendon defect model Clinical Relevance: DUCWJ scaffolds have potential as a regenerative material to augment rotator cuff healing in the clinical setting.

scholarly journals Antiproliferation Effects of Nanophytosome-Loaded Phenolic Compounds From Fruit of Juniperus Polycarpos Against Breast Cancer in Mice Model: Synthesis, Characterization and Therapeutic Effects

2021 ◽  
Author(s):  
Soheila Moeini ◽  
Ehsan Karimi ◽  
Ehsan Oskoueian
Keyword(s):  
Breast Cancer ◽  
Negative Control Group ◽  
Negative Control ◽  
Control Group ◽  
Therapeutic Effects ◽  
Mice Model ◽  
Fruit Extract ◽  
Phenolic Fraction ◽  
Juniperus Polycarpos

Abstract Background: This research was performed to synthesize nanophytosomes-loaded high phenolic fraction (HPF) from Juniperus polycarpos fruit extract and investigate its antiproliferation effects against breast cancer in mice model. Results: The nanophytosomes-loaded HPF from Juniperus polycarpos fruit extract was synthesized. The mice trial was conducted to determine the possible toxic effects of the synthesized nanophytosomes. The anticancer, pro-apoptotic, and antioxidative activities of the nanophytosomes were determined. The nanophytosomes-loaded HPF had a spherical structure with a size of 176 nm and a polydispersity index coefficient of 0.24. The in-vivo study manifested that nanophytosomes-loaded HPF significantly improved weight gain and food intake compared to the negative control group (p<0.05). The nanophytosomes-loaded HPF significantly enhanced the expression of bax (3.4-fold) and caspase-3 (2.7-fold) genes but reduced bcl2 (3.6-fold) gene expression in tumor cells. The average tumor size was significantly decreased in mice treated with nanophytosomes-loaded HPF (p<0.05). The expression of GPX (2.3-fold) and SOD (2.7-fold) antioxidants in the liver of mice supplemented with nanophytosomes-loaded HPF was significantly developed compared to the negative control (p<0.05). The nanophytosomes-loaded HPF did not show toxicity on normal cells. Conclusion: Our results indicated that nanophytosomes-loaded HPF might be a potential anticancer agent for the breast cancer treatment.

scholarly journals THE PROTECTIVE ROLE OF OMEGA-3 AGAINST GENOTOXICITY AND REPRODUCTIVE TOXICITY OF COBALT OXIDE NANOPARTICLES ACUTE TREATMENT IN MALE MICE

2018 ◽  
Vol 11 (5) ◽  
pp. 423
Author(s):  
Nahed A Hussien ◽  
Hanan R. H. Mohamed
Keyword(s):  
Cobalt Oxide ◽  
Negative Control Group ◽  
Protective Role ◽  
Negative Control ◽  
Control Group ◽  
Omega 3 ◽  
Genotoxic Potential ◽  
Polychromatic Erythrocytes

Objective: Cobalt nanoparticles (NPs), especially cobalt oxide NPs (Co3O4 NPs) are attracting unique shaped NPs that are used in different biomedical applications and medicine. Different in vitro studies report their toxic and carcinogenic effect but limited in vivo studies were present on its genotoxic potential. The present study was aimed to evaluate the genotoxic potential of Co3O4 NPs on bone marrow cells and sperms and the protective role of omega-3 in male albino mice.Methods: Animals were segregated into four groups that were orally treated for 3 consecutive days, Group 1: Negative control; Group 2: Omega-3 (250 mg/kg); Group 3: Co3O4 NPs (20 mg/kg); and Group 4: Combined group (250 mg/kg Omega-3 and Co3O4 NPs 20 mg/kg).Results: The present results show that Co3O4 NPs administration significantly increased number of micronucleated polychromatic erythrocytes (PCEs)/1000 PCEs, sperm abnormalities, and DNA damage, significantly decreased sperm motility and concentration in comparison to negative control group. However, Omega-3 administration in the combined group modulates the genotoxic potential of Co3O4 NPs in comparison to Co3O4 NPs group.Conclusion: The present study reports the genotoxic potential of Co3O4 NPs in vivo and assesses the protective role of Omega-3 administration due to its antioxidant effect.

INFLUENCE OF JAMU MADURA “EMPOT SUPER” ON THE VAGINAL EPITHELIUM THICKNESS OF WHITE MICE (Rattus norvegicus) – AN IN VIVO STUDY

2017 ◽  
Vol 2 (1) ◽  
pp. 47
Author(s):  
Anik Listiyana
Keyword(s):  
Rattus Norvegicus ◽  
Negative Control Group ◽  
Negative Control ◽  
Vaginal Epithelium ◽  
In Vivo Study ◽  
Control Group ◽  
Control Group Design ◽  
Post Test ◽  
Epithelium Thickness

<p><em>The aim of this research is to determine the influence of jamu Madura “Empot Super” (JMES) on the vaginal epithelium thickness of Rattus norvegicus in vivo. This research is kind of “true experimental-post test only control group design”. The rats were given drinking JMES once daily PS (Per-Sonde) for a month, then the vagina was taken to be sample for HE colouring. The sample was observed by the binocular microscope (100 times magnification) to identify the changes in the thickness of their vaginal epithelium. Calculation of the vaginal epithelium thickness was counted on the 10 field of view chosen randomly by the blind method. The result show that the vaginal epithelium thickness increased with dose 0,17mg/BW, 0,34mg/BW, and 0,68mg/BW of JMES compared with negative control group. But, the vaginal epithelium thickness decrease at the dose 0,51mg/BW compared with negative control group.</em></p><p> </p><p><strong>Keywords</strong><strong>: </strong>Jamu Madura “Empot Super” (JMES), vaginal epithelium thickness, white mice (<em>Rattus norvegicus</em>), In Vivo study</p>

scholarly journals Regeneration of a full-thickness defect of rotator cuff tendon with freshly thawed umbilical cord-derived mesenchymal stem cells in a rat model

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Ji-Hye Yea ◽  
Jin-Kyung Park ◽  
In Ja Kim ◽  
Gayoung Sym ◽  
Tae-Soo Bae ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Rotator Cuff ◽  
Umbilical Cord ◽  
Rat Model ◽  
Animal Experiments ◽  
Surrounding Tissue ◽  
Control Group ◽  
Full Thickness ◽  
Rotator Cuff Tendon

Abstract Background It is difficult to immediately use mesenchymal stem cells (MSCs) for the patient with rotator cuff disease because isolation and culture time are required. Thus, the MSCs would be prepared in advanced in cryopreserved condition for an “off-the-shelf” usage in clinic. This study investigated the efficacy of freshly thawed MSCs on the regeneration of a full-thickness tendon defect (FTD) of rotator cuff tendon in a rat model. Methods We evaluated morphology, viability, and proliferation of cultured umbilical cord-derived MSCs (C-UC MSCs) and freshly thawed umbilical cord-derived MSCs (T-UC MSCs) at passage 10 in vitro. In animal experiments, we created a FTD in the supraspinatus of rats and injected the injured tendon with saline, cryopreserved agent (CPA; control), C-UC MSCs, and T-UC MSCs, respectively. Two and 4 weeks later, macroscopic, histological, biomechanical, and cell trafficking were evaluated. T test and ANOVA were used with SPSS. Differences with p < .05 were considered statistically significant. Results T-UC MSCs had fibroblast-like morphology and showed greater than 97% viability and stable proliferation comparable to the C-UC MSCs at passage 10. In animal experiments, compared with the control group, the macroscopic appearance of the T-UC MSCs was more recovered at 2 and 4 weeks such as inflammation, defect size, neighboring tendon, swelling/redness, the connecting surrounding tissue and slidability. Histologically, the nuclear aspect ratio, orientation angle of fibroblasts, collagen organization, and fiber coherence were improved by 33.33%, 42.75%, 1.86-fold, and 1.99-fold at 4 weeks, and GAG-rich area decreased by 88.13% and 94.70% at 2 and 4 weeks respectively. Further, the T-UC MSCs showed enhanced ultimate failure load by 1.55- and 1.25-fold compared with the control group at both 2 and 4 weeks. All the improved values of T-UC MSCs were comparable to those of C-UC MSCs. Moreover, T-UC MSCs remained 8.77% at 4 weeks after injury, and there was no significant difference between C-UC MSCs and T-UC MSCs. Conclusions The morphology, viability, and proliferation of T-UC MSCs were comparable to those of C-UC MSCs. Treatment with T-UC MSCs could induce tendon regeneration of FTD at the macroscopic, histological, and biomechanical levels comparable to treatment with C-UC MSCs.

In vivo Antitumoral Effect of Plantago major L. Extract on Balb/C Mouse with Ehrlich Ascites Tumor

2007 ◽  
Vol 35 (05) ◽  
pp. 841-851 ◽  
Author(s):  
Mehmet Ozaslan ◽  
I. Didem Karagöz ◽  
M. Emin Kalender ◽  
I. Halil. Kilic ◽  
Ibrahim Sari ◽  
...  
Keyword(s):  
Weight Gain ◽  
Negative Control Group ◽  
Negative Control ◽  
Ehrlich Ascites Tumor ◽  
Control Group ◽  
Plantago Major ◽  
Ascites Tumor ◽  
Treatment Groups ◽  
Ehrlich Ascites

The aim of this study is to investigate the antitumor activity of Plantago major L. extract in Ehrlich ascites tumor (EAT) bearing Balb/C mice in vivo. Thirty male Balb/C mice were divided into 5 groups: 3 treatment groups and 2 control groups (6 per group). Treatment groups and the negative control group were injected with EAT (1 × 106 cells) intraperitoneally to develop ascites tumor. P. major L. extract (1%, 2% and 3% concentration extracts, 0.1 ml/day/mouse) were given p.o. for 10 alternate days. The control group was treated with 0.9% NaCl solution (0.1 ml/day/mouse). The changes of body weight in animals were recorded. On the 11th day, all of the mice were sacrified and their tissues were stained with haematoxylen and eosin for pathological studies. Body weights of in 3 treatment groups and the negative control group were elevated because of tumor burden. The maximal weight gain was recorded in the negative control group and the minimal weight gain was recorded in Group I. Pathological studies showed that P. major L. extract (especially 1% concentration) has inhibitive effect on EAT. P. major has an inhibitory effect on EAT in a dose dependent manner.

scholarly journals Preparation and Evaluation of Azelaic Acid Topical Microemulsion Formulation: In Vitro and In Vivo Study

Pharmaceutics ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 410
Author(s):  
Wan-Hsuan Hung ◽  
Ping-Kang Chen ◽  
Chih-Wun Fang ◽  
Ying-Chi Lin ◽  
Pao-Chu Wu
Keyword(s):  
Azelaic Acid ◽  
Skin Irritation ◽  
Topical Administration ◽  
Negative Control Group ◽  
Negative Control ◽  
Commercial Product ◽  
Control Group ◽  
Drug Delivery Carrier

The aim of this study was to design oil in water (O/W) microemulsion formulations for the topical administration of azelaic acid. The permeability of azelaic acid through rat skin and the anti-inflammatory activities of the formulations were conducted to examine the efficacy of the designed formulations. Skin irritation and stability tests were also performed. The permeability of azelaic acid was significantly increased by using O/W microemulsions as carriers. The edema index of ear swelling percentage was significantly recovered by the 5% drug-loaded formulation and a 20% commercial product, demonstrating that the experimental formulation possessed comparable effect with the commercial product on the improvement of inflammation. The experimental formulation did not cause significant skin irritation compared to the negative control group. Moreover, the drug-loaded formulation also showed thermodynamic stability and chemical stability after storage for 30 days. In conclusion, the O/W microemulsion was a potential drug delivery carrier for azelaic acid topical application.

scholarly journals POTENSI EKSTRAK JAHE MERAH (Zingiberaceae officinale rosc)SEBAGAI ANTIMIKROBA DAN PENINGKAT KUALITAS SPERMATOZOA MENCIT YANG DIINFEKSI BAKTERI Staphylococcus aureus SECARA INTRA URETHRA

WAHANA ◽  
2017 ◽  
Vol 69 (2) ◽  
pp. 1-7
Author(s):  
Ersanto Ersanto ◽  
Sukarjati Sukarjati
Keyword(s):  
Staphylococcus Aureus ◽  
Negative Control Group ◽  
Negative Control ◽  
Plate Count ◽  
Control Group ◽  
Ginger Extract ◽  
Laboratory Rats ◽  
Plate Count Method ◽  
Red Ginger

Red Ginger (Zingiberaceae officinale rosc) is known to be used as an anti-microbial andenhancing the quality of spermatozoa. This study aims to demonstrate of the red ginger extract(Zingiberaceae officinale rosc)potential as an antimicrobial and the quality enhancer of spermatozoain laboratory rats injected by Staphylococcus aureus to its urethra. The red ginger was extracted byethanol. The sample of this research was the spermatozoa of 30 mice that were injected byStaphylococcus aureus to its urethra. Potential test of red ginger extract on the laboratory ratsconducted by observing the spermatozoa’s motility, viability, morphology, the spermatozoa’sconcentration and the amount of spermatozoa leukocyte in the laboratory rats after the administrationof the red ginger extract for 35 days under the microscope. Antimicrobial activity test onStaphylococcus aureus was done by culturing the spermatozoa of laboratory rats (in vivo) afteradministering the red ginger extract for 35 days with total plate count method. The result of the studyshowed that there were differences between negative control group of laboratory rats and positivecontrol group of laboratory rats (laboratory rats injected with Staphylococcus aureus intra urethra)motility (p = 0.000), viability (p = 0.000), morphology (p = 0.000), concentration (p = 0.000), and theamount of leukocyte (p = 0.000). Whereas on the calculation of red ginger extract bacterial coloniesgive the significant effects p <0.05 on the growth of S. aureus. Based on the results of this study, it canbe conclude that the red ginger has potential as an antimicrobial and it also can improve the quality ofspermatozoa in laboratory rats infected with S. aureus through its urethra.

scholarly journals Regeneration of a Full-Thickness Defect of Rotator Cuff Tendon with Freshly Thawed Umbilical Cord-Derived Mesenchymal Stem Cells in a Rat Model

2020 ◽  
Author(s):  
Ji-Hye Yea ◽  
Jin-Kyung Park ◽  
InJa Kim ◽  
Gayoung Sym ◽  
Tae Soo Bae ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Rotator Cuff ◽  
Umbilical Cord ◽  
Rat Model ◽  
Animal Experiments ◽  
Surrounding Tissue ◽  
Control Group ◽  
Full Thickness ◽  
Rotator Cuff Tendon

Abstract Background: It is difficult to immediately use mesenchymal stem cells (MSCs) for the patient with rotator cuff disease because isolation and culture time are required. Thus, the MSCs would be prepared in advanced in cryopreserved condition for an “off-the-shelf” usage in clinic. This study investigated the efficacy of freshly thawed MSCs on the regeneration of a full-thickness tendon defect (FTD) of rotator cuff tendon in a rat model. Methods: We evaluated morphology, viability and proliferation of cultured umbilical cord-derived MSCs (C-UC MSCs) and freshly thawed umbilical cord-derived MSCs (T-UC MSCs) at passage 10 in vitro. In animal experiments, we created a FTD in the supraspinatus tendon of rats and injected the injured tendon with saline, cryopreserved agent (CPA; control), C-UC MSCs, and T-UC MSCs respectively. Two to four weeks later, macroscopic, histological and biomechanical changes were evaluated. T-test and ANOVA were used with SPSS. Differences with p < .05 were considered statistically significant.Results: T-UC MSCs had fibroblast-like morphology and showed greater than 97% viability and stable proliferation comparable to the C-UC MSCs at passage 10. In animal experiments, compared with the control group, the macroscopic appearance of the T-UC MSCs was further recovered at two and four weeks such as inflammation, defect size, neighboring tendon, swelling/redness and the connecting surrounding tissue and slidability. Histologically, compared to the control group the nuclear aspect ratio, orientation angle of fibroblasts, collagen organization and fiber coherence were improved by 33.33%, 42.75%, 1.86- and 1.99-fold and GAG-rich area was suppressed by 81.05% at four weeks. Further, the T-UC MSCs showed enhanced ultimate failure load by 1.55- and 1.25-fold compared with the control group at both two and four weeks. All the improved values of T-UC MSCs were comparable to those of C-UC MSCs. Conclusions: The morphology, viability and proliferation of T-UC MSCs are comparable to those of C-UC MSCs. Treatment with T-UC MSCs induces tendon regeneration of FTD at the macroscopic, histological and biomechanical levels comparable to treatment with C-UC MSCs.

scholarly journals AgNPs Argovit™ Modulates Cyclophosphamide-Induced Genotoxicity on Peripheral Blood Erythrocytes In Vivo

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2096
Author(s):  
Idalia Yazmin Castañeda-Yslas ◽  
Olivia Torres-Bugarín ◽  
Juan Carlos García-Ramos ◽  
Yanis Toledano-Magaña ◽  
Patricia Radilla-Chávez ◽  
...  
Keyword(s):  
Body Weight ◽  
Silver Nanoparticle ◽  
Peripheral Blood ◽  
Negative Control Group ◽  
Negative Control ◽  
Control Group ◽  
Weight Group ◽  
Genotoxic Damage ◽  
Average Size

Silver nanoparticles (AgNPs) have been studied worldwide for their potential biomedical applications. Specifically, they are proposed as a novel alternative for cancer treatment. However, the determination of their cytotoxic and genotoxic effects continues to limit their application. The commercially available silver nanoparticle Argovit™ has shown antineoplastic, antiviral, antibacterial, and tissue regenerative properties, activities triggered by its capacity to promote the overproduction of reactive oxygen species (ROS). Therefore, in this work, we evaluated the genotoxic and cytotoxic potential of the Argovit™ formulation (average size: 35 nm) on BALB/c mice using the micronucleus in a peripheral blood erythrocytes model. Besides, we evaluated the capability of AgNPs to modulate the genotoxic effect induced by cyclophosphamide (CP) after the administration of the oncologic agent. To achieve this, 5–6-week-old male mice with a mean weight of 20.11 ± 2.38 g were treated with water as negative control (Group 1), an single intraperitoneal dose of CP (50 mg/kg of body weight, Group 2), a daily oral dose of AgNPs (6 mg/kg of weight, Group 3) for three consecutive days, or a combination of these treatment schemes: one day of CP doses (50 mg/kg of body weight) followed by three doses of AgNPs (one dose per day, Group 4) and three alternate doses of CP and AgNPs (six days of exposure, Group 5). Blood samples were taken just before the first administration (0 h) and every 24 h for seven days. Our results show that Argovit™ AgNPs induced no significant cytotoxic or acute genotoxic damage. The observed cumulative genotoxic damage in this model could be caused by the accumulation of AgNPs due to administered consecutive doses. Furthermore, the administration of AgNPs after 24 h of CP seems to have a protective effect on bone marrow and reduces by up to 50% the acute genotoxic damage induced by CP. However, this protection is not enough to counteract several doses of CP. To our knowledge, this is the first time that the exceptional chemoprotective capacity produced by a non-cytotoxic silver nanoparticle formulation against CP genotoxic damage has been reported. These findings raise the possibility of using AgNPs as an adjuvant agent with current treatments, reducing adverse effects.

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