Osseointegration of a novel 3D porous Ti-6Al-4V implant material - Histomorphometric analysis in rabbits

xlomafota13 shared this article with you from Inoreader Osseointegration of a novel 3D porous Ti-6Al-4V implant material - Histomorphometric analysis in rabbits Via Cellular and Molecular Biology Histol Histopathol. 2021 May 11:18342. doi: 10.14670/HH-18-342. Online ahead of print. ABSTRACT Porous structure properties are known to conduct initial and long-term stability of titanium alloy implants. This study aims to assess the histomorphometric effect of a 3-D porosity in Ti-6Al-4V implants (PI) on osseointegration in comparison to solid Ti-6Al-4V implants (SI). The PI was produced in a spaceholder method and sintering and has a pore size of mean 400 µm (50 µm to 500 µm) and mimics human trabecular bone. Pairs of PI and equal sized SI as reference were bilaterally implanted at random in the lateral femoral condyle of 16 Chinchilla-Bastard rabbits. The animals were sacrificed after 4 and 12 weeks for histomorphometric analysis. The histomorphometric evaluation confirmed a successful short-term osseohealing (4 weeks) and mid-term osseoremodeling (12 weeks) for both types of implants. The total newly formed bone area was larger for PI than for SI after 4 and 12 weeks, with the intraporous bone area being accountable for the significant difference (p<0.05). A more detailed observation of bone area distribution revealed a bony accumulation in a radius of +/- 500 µm around the implant surface after remodeling. The bone-to-implant contact (BIC) increased significantly (p<0.05) from 4 to 12 weeks (PI 26.23 % to 42.68 %; SI 28.44 % to 47.47 %) for both types of implants. Due to different surface properties, however, PI had a significant (p<0.05) larger absolute osseous contact (mm) to the implant circumference compared to the SI (4 weeks: 7.46 mm vs 5.72 mm; 12 weeks: 11.57 mm vs 9.52 mm [PI vs. SI]). The regional influences (trabecular vs. cortical) on bone formation and the intraporous distribution were also presented. Conclusively, the porous structure and surface properties of PI enable a successful and regular osseointegration and enhance the bony fixation compared to solid implants under experim ental conditions. PMID:33973645 | DOI:10.14670/HH-18-342 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Clinical and diagnostic value of the combination of lymphocyte count and creatine kinase in the detection of coronavirus 2019

xlomafota13 shared this article with you from Inoreader Clinical and diagnostic value of the combination of lymphocyte count and creatine kinase in the detection of coronavirus 2019 Via Experimental and therapeutic medicine Exp Ther Med. 2021 Jun;21(6):641. doi: 10.3892/etm.2021.10073. Epub 2021 Apr 16. ABSTRACT The present study aimed to investigate the diagnostic efficiency of the absolute number of lymphocytes (LYM) and creatine kinase (CK) levels in the diagnosis of coronavirus disease 2019 (COVID-19). For this, the clinical data from 84 patients with COVID-19 admitted to Tianjin Haihe Hospital (Tianjin, China) between January and February 2020 were collected. The patients were divided into the following groups: The common COVID-19 group (n=61) and severe COVID-19 group (n=23). In addition, 30 healthy subjects were included as a control group. The results demonstrated that the percentage of neutrophils (NEU%) was significantly increased, while the absolute number of white blood cells, LYM and the percentage of lymphocytes (LYM%) were significantly decreased in patients with COVID-19. Furthermore, in the severe group, the absolute number of red blood c ells in female patients, the NEU%, the neutrophil-to-lymphocyte ratio (NLR) and the serum levels of interleukin-6 and C-reactive protein (CRP) were markedly elevated, while those of LYM and LYM% were significantly decreased (all P<0.05). In addition, in the receiver operating characteristics curve analysis for the combination of LYM + CK, the area under the curve values were 0.96 and 1.00, with a sensitivity of 95.08 and 100%, specificity of 86.67 and 100% and cut-off values of 0.42 and 0.50 for the common and severe COVID-19 group, respectively. The results indicated that the diagnostic efficiency of LYM + CK was higher than that of each single factor. Finally, a moderate correlation of lactate dehydrogenase with CRP and NLR (r=0.492 and 0.433, respectively; both P<0.05) was obtained. Overall, the results of the present study indicated that the values of LYM and CK were associated with the progression of COVID-19, suggesting that the combination of both factors may be of clin ical diagnostic value for COVID-19. PMID:33968172 | PMC:PMC8097235 | DOI:10.3892/etm.2021.10073 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Facing coronavirus disease 2019: What do we know so far? (Review)

xlomafota13 shared this article with you from Inoreader Facing coronavirus disease 2019: What do we know so far? (Review) Via Experimental and therapeutic medicine Exp Ther Med. 2021 Jun;21(6):658. doi: 10.3892/etm.2021.10090. Epub 2021 Apr 20. ABSTRACT Although the World Health Organization declared the outbreak of coronavirus disease 2019 (COVID-19), which originated in China, as a public health emergency of international concern as early as January 30, 2020, the current COVID-19 epidemic is spreading rapidly. As of April 19, 2020, total of 2,392,165 confirmed cases had been reported in 211 countries and regions, with 614,421 (25.68%) cured cases and 164,391 (6.87%) deaths. Scientists and clinicians have made great efforts to learn much about COVID-19 so that it can be controlled as soon as possible. Herein, this review will discuss the epidemiology, pathology, clinical features, diagnosis and treatment of COVID-19 based on the current evidence. PMID:33968188 | PMC:PMC8097225 | DOI:10.3892/etm.2021.10090 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

lncRNA NORAD promotes the progression of osteosarcoma via targeting of miR-155-5p

xlomafota13 shared this article with you from Inoreader lncRNA NORAD promotes the progression of osteosarcoma via targeting of miR-155-5p Via Experimental and therapeutic medicine Exp Ther Med. 2021 Jun;21(6):645. doi: 10.3892/etm.2021.10077. Epub 2021 Apr 18. ABSTRACT Osteosarcoma (OS) is the most common malignant bone tumor in teens. Non-coding RNA activated by DNA damage (NORAD), a long non-coding RNA (lncRNA), has been reported to be involved in cancer biology, although its role in OS remains largely unknown. In the present study reverse transcription-quantitative PCR (RT-qPCR) was used to determine the expression levels of NORAD and miR-155-5p in samples from patients with OS. OS cell lines (Saos-2 and U2OS) were used as cell models. The biological influence of NORAD on OS cells was studied in vitro using Cell Counting Kit-8 and Transwell assays. The interaction between NORAD and miR-155-5p was clarified by bioinformatics analysis, RT-qPCR, luciferase reporter assay and RNA immunoprecipitation. NORAD was significantly increased in OS samples in comparison with controls, while miR-155-5p was reduced. Knockdown of NORAD and transfection of miR-155-5p mimics markedly inhibited the viability, migration and invasion of OS cells. There was a negative correlation between NORAD and miR-155-5p expression levels in OS samples. Taken together, the results of the present study indicated that the NORAD/miR-155-5p axis played a crucial role in regulating the proliferation, migration and invasion of OS cells. It is hypothesized that NORAD and miR-155-5p may serve as potential novel therapeutic targets for OS management. PMID:33968176 | PMC:PMC8097224 | DOI:10.3892/etm.2021.10077 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

MicroRNA-219a-2-3p modulates the proliferation of thyroid cancer cells via the HPSE/cyclin D1 pathway

xlomafota13 shared this article with you from Inoreader MicroRNA-219a-2-3p modulates the proliferation of thyroid cancer cells via the HPSE/cyclin D1 pathway Via Experimental and therapeutic medicine Exp Ther Med. 2021 Jun;21(6):659. doi: 10.3892/etm.2021.10091. Epub 2021 Apr 20. ABSTRACT Heparanase (HPSE) is an endo-β-D-glucuronidase overexpressed in different types of human cancer, and a predicted target of microRNA (miRNA/miR)-219a-2-3p in thyroid cancer. The present study aimed to investigate the potential role of HPSE and miR-219a-2-3p in thyroid cancer, and the molecular mechanism of miR-219a-2-3p regulating the proliferation of thyroid cancer cells via HPSE was confirmed. Immunohistochemistry analysis was performed to detect HPSE expression in thyroid cancer sections. In addition, reverse transcription-quantitative PCR analysis was performed to detect mRNA and miR-219a-2-3p expression levels in thyroid cancer samples and cell lines. miR-219-2-3p mimic or HPSE plasmid were transfected into B-CPAP and TPC-1 thyroid cancer cells. Furthermore, western blot analysis was performed to detect the protein expression levels of HPSE a nd cyclin D1. Cell cycle analysis was performed using propidium iodide staining and flow cytometry, and EdU incorporation was performed to detect cell proliferation. The results demonstrated that high HPSE expression was significantly associated with tumor size, extracapsular invasion and lymph node metastasis. Notably, a statistically negative correlation was observed between HPSE mRNA expression and miR-219a-2-3p expression in thyroid cancer tumors, as well as in thyroid cancer cell lines. When exogenously expressed in B-CPAP and TPC-1 cells, miR-219a-2-3p induced cell cycle arrest at the G0/G1 phase and decreased the percentage of proliferating cells. Furthermore, HPSE and cyclin D1 protein expression decreased following transfection with miR-219a-2-3p. Notably, when HPSE was ectopically expressed in miR-219a-2-3p transfected cells, cyclin D1 expression and the number of proliferative cells increased. Taken together, these results suggest that HPSE contribut es to the proliferation of thyroid cancer cells. In addition, miR-219a-2-3p was confirmed to target HPSE and inhibit cell proliferation, which was associated with cyclin D1 suppression-mediated cell cycle arrest. PMID:33968189 | PMC:PMC8097191 | DOI:10.3892/etm.2021.10091 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Microarray analysis of the time-dependent expression profiles of long non-coding RNAs in the progression of vein graft stenotic disease

xlomafota13 shared this article with you from Inoreader Microarray analysis of the time-dependent expression profiles of long non-coding RNAs in the progression of vein graft stenotic disease Via Experimental and therapeutic medicine Exp Ther Med. 2021 Jun;21(6):635. doi: 10.3892/etm.2021.10067. Epub 2021 Apr 15. ABSTRACT Long non-coding RNAs (lncRNAs) have been reported to be involved in various biological processes, including cell proliferation and apoptosis. However, the expression profiles of lncRNAs in patients with vein graft restenosis remain unknown. In the present study, the time-dependent expression profiles of genes in vein bypass grafting models were examined by microarray analysis. A total of 2,572 lncRNAs and 1,652 mRNAs were identified to be persistently significantly differentially expressed. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis was performed to investigate the functions of these lncRNAs. A total of 360 lncRNAs and 135 protein-coding genes were predicted to be involved in the vascular remodeling process. Co-expression network analysis revealed the association between 194 lncRNAs and seven associated protein-c oding genes, including transforming growth factor-β1, Fes, Yes1 associated transcriptional regulator, sphingosine-1-phosphate receptor 1, Src, insulin receptor and melanoma cell adhesion molecule. Moreover, reverse transcription-quantitative PCR results supported those of the microarray data, and overexpression of AF062402, which regulates the transcription of Src, stimulated the proliferation of primary vascular smooth muscle cells. The findings of the present study may facilitate the development of novel therapeutic targets for vein graft restenosis and may help to improve the prognosis of patients following coronary artery bypass grafting. PMID:33968166 | PMC:PMC8097238 | DOI:10.3892/etm.2021.10067 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Transcriptomic analysis and competing endogenous RNA network in the human endometrium between proliferative and mid-secretory phases

xlomafota13 shared this article with you from Inoreader Transcriptomic analysis and competing endogenous RNA network in the human endometrium between proliferative and mid-secretory phases Via Experimental and therapeutic medicine Exp Ther Med. 2021 Jun;21(6):660. doi: 10.3892/etm.2021.10092. Epub 2021 Apr 20. ABSTRACT Successful embryo implantation is the first step for establishing natural pregnancy and is dependent on the crosstalk between the embryo and a receptive endometrium. However, the molecular signaling events for successful embryo implantation are not entirely understood. To identify differentially expressed transcripts [long-noncoding RNAs (lncRNAs), microRNAs (miRNAs) and mRNAs] and competing endogenous RNA (ceRNA) networks associated with endometrial receptivity, the current study analyzed gene expression profiles between proliferative and mid-secretory endometria in fertile women. A total of 247 lncRNAs, 67 miRNAs and 2,154 mRNAs were identified as differentially expressed between proliferative and mid-secretory endometria. Kyoto Encyclopedia of Genes and Genomes pathway analysis indicated that these differentially expressed genes were significan tly enriched for 'cell adhesion molecules.' Additionally, 98 common mRNAs were significantly involved in tryptophan metabolism, metabolic pathways and FoxO signaling. From the differentially expressed lncRNA/miRNA/mRNA ceRNA network, hub RNAs that formed three axes were identified: The DLX6-AS1/miR-141 or miR-200a/OLFM1 axis, the WDFY3-AS2/miR-135a or miR-183/STC1 axis, and the LINC00240/miR-182/NDRG1 axis. These may serve important roles in the regulation of endometrial receptivity. The hub network of the current study may be developed as a candidate marker for endometrial receptivity. PMID:33968190 | PMC:PMC8097233 | DOI:10.3892/etm.2021.10092 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.