Δευτέρα 7 Φεβρουαρίου 2022

Efficiency of platelet-rich plasma therapy for healing sports injuries in young athletes

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Exp Ther Med. 2022 Mar;23(3):215. doi: 10.3892/etm.2022.11139. Epub 2022 Jan 11.

ABSTRACT

In recent years, platelet-rich plasma (PRP) therapy has been a subject of controversy in orthopedics field. Our objective was to assess the efficiency of PRP therapy for patients who have suffered grade 2 meniscal lesions and grade 2 anterior cruciate ligament (ACL) lesions, graded by magnetic resonance imaging (MRI). A retrospective observational study was conducted, which included 72 young recreational athletes who had been diagnosed with grade 2 meniscal injury, graded using MRI, that benefited from PRP therapy as an enhancement of the primary treatment, after cast immobilization. The Lysholm score, the pain intensity and the resuming of the physical activity before the PRP treatment and one month after were analyzed. Our study revealed that patients had an improved subjective perception of pain after PRP therapy and an improvement of the Lysho lm score. Concurrently, 83.3% of patients could return to sports and daily physical activity. It can be concluded that PRP therapy is a safe, easy to manage treatment, efficient for pain relief and in resuming of sports activities for young recreational athletes who have sustained partial meniscal or ACL tears. In terms of pain relief, it appears that the PRP therapy could be more efficient for young patients with ACL injuries.

PMID:35126718 | PMC:PMC8796279 | DOI:10.3892/etm.2022.11139

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Telmisartan inhibits bladder smooth muscle fibrosis in neurogenic bladder rats

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Exp Ther Med. 2022 Mar;23(3):216. doi: 10.3892/etm.2022.11140. Epub 2022 Jan 11.

ABSTRACT

Hypertension is associated with bladder symptoms. The present study investigated whether an angiotensin receptor blocker could improve the symptoms and pathological changes associated with a neurogenic bladder (NB). A Sprague-Dawley rat model of NB was constructed. Rats in the sham and model groups were gavaged with saline, and rats in the treatment group were gavaged with telmisartan. Urodynamic parameters, including maximum cystometric capacity, residual urine volume, bladder wet weight, bladder compliance and detrusor pressure, were detected. Masson and H&E staining were performed to assess bladder fibrosis and histopathological changes. The expression levels of basic fibroblast growth factor (bFGF), TGF-β1, Collagen I, Collagen III, and α-smooth muscle actin (α-SMA) were also measured by reverse transcription-quantitative PCR, western b lotting and immunohistochemistry. The model rats exhibited symptoms and pathological changes associated with NB. Treatment with telmisartan reduced maximum cystometric capacity, residual urine volume, bladder compliance and bladder wet weight, and increased detrusor pressure in model rats. The tissue staining results showed that telmisartan exerted an antifibrotic effect. In addition, telmisartan inhibited the expression of bFGF, TGF-β1, Collagen I, Collagen III and α-SMA in model rats. Therefore, the results of the present study indicated that telmisartan may serve as a potential therapeutic agent for NB.

PMID:35126719 | PMC:PMC8796288 | DOI:10.3892/etm.2022.11140

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Identification of key pathways and genes in vestibular schwannoma using bioinformatics analysis

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Exp Ther Med. 2022 Mar;23(3):217. doi: 10.3892/etm.2022.11141. Epub 2022 Jan 13.

ABSTRACT

The aim of the present study is to identify novel promising marks and targets of diagnosis, therapy and prognosis for patients with vestibular schwannoma at the molecular level. The gene expression profiles of GSE54934, GSE39645 and GSE56597 datasets were obtained respectively from the Gene Expression Omnibus database. The differentially expressed genes (DEGs) were identified by comparing between gene expression profiles of the vestibular schwannoma tissues and normal tissues. Subsequently, Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis and protein-protein interaction (PPI) network analysis were performed. The function and pathway enrichment analysis were performed for DEGs with DAVID. Reverse transcription-quantitative PCR were conducted to confirm the expression of BCL2, AGT, IL6 and ITGA2 in human Schwann cells and vestibular schwannoma cells. A total of 4,025, 1,1291 and 1,513 DEGs were identified from GSE54934, GSE56597 and GSE39645 datasets, respectively. GO and KEGG analysis showed that the mutual upregulated genes were mainly enriched in cell division, mitotic nuclear division, and transition of mitotic cell cycle, whilst mutual downregulated genes were enriched in chemical synaptic transmission, neurotransmitter transport, and synaptic vesicle membrane. Subsequently, 20 genes, including BCL2, AGT, IL6 and ITGA2 were selected as hub genes with high degrees after PPI network analysis. The significant differential expression of those genes were detected among vestibular schwannoma tissues compared with normal nerve tissues. In conclusion, BCL2, AGT, IL6 and ITGA2 are significantly higher expressed in vestibular schwannoma tissues compared with human Schwann tissues. The DEGs identified in the present study provide novel targets for the diagnosis and treatment of vestibular schwannoma.

PMID:35126720 | PMC:PMC8796280 | DOI:10.3892/etm.2022.11141

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Role of antioxidants and oxidative stress in the evolution of acute pancreatitis (Review)

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Exp Ther Med. 2022 Mar;23(3):197. doi: 10.3892/etm.2022.11120. Epub 2022 Jan 5.

ABSTRACT

Acute pancreatitis (AP) is a severe disease with a high prevalence and 3 to 15% mortality worldwide, which can represent an important challenge for the physician. Oxidative stress and antioxidants are involved in AP progression. The mechanisms responsible for the onset and progression of AP are still poorly understood. Previous studies have highlighted the important contribution of antioxidants and oxidative stress in AP. The existence of a relationship between oxidative stress and antioxidants in AP is unquestionable, although a more accurate understanding of the mechanistic pathways involved is required to create a solid basis for potential prevention or treatment strategies. Further investigation is needed to clarify the role of antioxidant status and the severity of AP and to determine the association between oxidative stress and pancreatic enz yme activities. Antioxidant therapy may represent an interesting option for the management of patients with AP, although additional information about the effectiveness of this potential treatment is required.

PMID:35126700 | PMC:PMC8794551 | DOI:10.3892/etm.2022.11120

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From chronic pruritus to neuroendocrine tumor: A case report

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Exp Ther Med. 2022 Mar;23(3):189. doi: 10.3892/etm.2022.11112. Epub 2022 Jan 4.

ABSTRACT

Chronic pruritus is a major and distressing symptom of many diseases of dermatological, neurological, psychogenic or systemic origin. This chronic itch could be a presenting sign of malignancy; therefore, paraneoplastic pruritus has also been associated with neuroendocrine tumors (NETs). This article focuses on a patient presenting with chronic pruritus for the past 12 months and who received numerous treatment schemes with very poor clinical improvement, that presented in the hospital for worsening of the chronic pruritus associated with skin rash and significant weight loss (approximately 6 kg over a 2-month period). The laboratory tests showed iron deficiency anemia, eosinophilia and negative tumor markers. In order to investigate the hypoanabolic and anemic syndromes, upper gastrointestinal endoscopy and colonoscopy, which showed no lesions or tumors, were employed. Skin biopsy was performed and antihistaminic and local steroid treatment was initiated. The patient's status worsened within a week and the patient was started on systemic steroid treatment with poor results. Computer tomography was performed to identify any tumor(s) located either in the pelvis or abdomen. A lesion was found in the terminal ileum, identified as a hypervascularized associating bulky lymphadenopathy. The patient was transferred to the surgical ward where right hemicolectomy with manual ileotransverse anastomosis L-L was performed. The histopathological result confirmed NET G2. The patient clinically improved, the skin lesions resolved and the itchiness disappeared. The general status improved significantly. NET G2 diagnosing was possible due to the atypic paraneoplastic sign: chronic pruritus. This case study highlights the association between itch and malignancy and presents an atypical way of NET presentation when all tumor markers remain neg ative.

PMID:35126692 | PMC:PMC8794552 | DOI:10.3892/etm.2022.11112

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Cytokines and Inflammation in Meniere Disease

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Clin Exp Otorhinolaryngol. 2022 Feb 8. doi: 10.21053/ceo.2021.00920. Online ahead of print.

ABSTRACT

Meniere disease (MD) is a rare set of conditions associated with the accumulation of endolymph in the cochlear duct and the vestibular labyrinth with a decrease of endocochlear potential. It is considered a chronic inflammatory disorder of the inner ear with a multifactorial origin. The clinical syndrome includes several groups of patients with a core phenotype: sensorineural hearing loss, episodes of vertigo, and tinnitus with a non-predictable course. Genetic factors and the innate immune response seem to play a central role in the pathophysiology of the condition. Autoimmune MD should be diagnosed if a patient fulfills the diagnostic criteria for MD and one of the following autoimmune disorders: autoimmune thyroid disease, psoriasis, autoimmune arthritis, ankylosing spondylitis, or systemic lupus erythematosus. We summarize the evide nce to support autoimmune MD as an endophenotype in bilateral MD associated with the allelic variant rs4947296 and nuclear factor-kappa B (NF-κB)-mediated inflammation, the role of cytokines (particularly interleukin-1β and tumor necrosis factor-α) in defining a subset of patients with autoinflammation, and the potential role of cytokines as biomarkers to distinguish between patients with MD and vestibular migraine. Finally, we also introduce a list of potential drugs that could regulate the immune response in MD with potential for repurposing in clinical trials.

PMID:35124944 | DOI:10.21053/ceo.2021.00920

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Oral administration of megestrol acetate can increase fat graft survival in a rat model

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J Plast Reconstr Aesthet Surg. 2022 Jan 16:S1748-6815(22)00018-3. doi: 10.1016/j.bjps.2022.01.004. Online ahead of print.

ABSTRACT

Insufficient and inconsistent survival is a significant shortcoming of fat grafts. Reportedly, megestrol acetate (MA) could induce proliferation, migration, and adipogenic differentiation of adipose-derived stem cells in vitro. Thus, we tested whether MA could promote fat graft survival in a rat model. Twenty-eight Sprague-Dawley rats (8 weeks old, male) were divided into two groups: experimental (MA group, n = 14) and control (n = 14). The inguinal fat pad (1 g) was extracted en bloc and re-implanted under the scalp in both groups. MA (100 mg/kg/day) was administered orally for 14 postoperative days in the experimental group. After 6 weeks, the volume and weight of the grafted fat were measured. Histologic examination with hematoxylin and eosin (HE) and real-time polymerase chain reaction (PCR) for vascula r endothelial growth factor (VEGF), fibroblast growth factor 2 (FGF2), and CCAAT/enhancer-binding protein alpha (C/EBP-α) were performed. Perilipin staining was performed to check the viability of grafted fat. Graft fat volume was greater in the MA group, compared with that in the control (P = 0.023). The MA group also had more viable cells, including more adipocytes, and less fibrosis or vacuoles than the control on HE and perilipin staining. MA upregulated the expression of FGF2 (P<0.001), VEGF (P = 0.008), and C/EBP-α (P = 0.002) at the second postoperative week. MA increased survival of grafted fat in an animal model. Increased vascularization and adipogenesis were related to these results. Further human clinical trials are necessary to evaluate adjunctive oral administration of MA after fat grafting to promote graft survival.

PMID:35125304 | DOI:10.1016/j.bjps.2022.01.004

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