scholarly journals Quality of Newly Formed Cartilaginous Tissue in Defects of Articular Surface after Transplantation of Mesenchymal Stem Cells in a Composite Scaffold Based on Collagen I with Chitosan Micro- and Nanofibres

2010 ◽  
pp. 605-614
Author(s):  
A Nečas ◽  
L Plánka ◽  
R Srnec ◽  
M Crha ◽  
J Hlučilová ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Articular Cartilage ◽  
Composite Scaffold ◽  
Cartilaginous Tissue ◽  
Miniature Pigs ◽  
Significant Difference ◽  
Group A ◽  
Group B

The aim of this study was to evaluate macroscopically, histologically and immunohistochemically the quality of newly formed tissue in iatrogenic defects of articular cartilage of the femur condyle in miniature pigs treated with the clinically used method of microfractures in comparison with the transplantation of a combination of a composite scaffold with allogeneic mesenchymal stem cells (MSCs) or the composite scaffold alone. The newly formed cartilaginous tissue filling the defects of articular cartilage after transplantation of the scaffold with MSCs (Group A) had in 60 % of cases a macroscopically smooth surface. In all lesions after the transplantation of the scaffold alone (Group B) or after the method of microfractures (Group C), erosions/fissures or osteophytes were found on the surface. The results of histological and immunohistochemical examination using the modified scoring system according to O’Driscoll were as follows: 14.7±3.82 points after transplantations of the scaffold with MSCs (Group A); 5.3±2.88 points after transplantations of the scaffold alone (Group B); and 5.2±0.64 points after treatment with microfractures (Group C). The O’Driscoll score in animals of Group A was significantly higher than in animals of Group B or Group C (p<0.0005 both). No significant difference was found in the O’Driscoll score between Groups B and C. The treatment of iatrogenic lesions of the articular cartilage surface on the condyles of femur in miniature pigs using transplantation of MSCs in the composite scaffold led to the filling of defects by a tissue of the appearance of hyaline cartilage. Lesions treated by implantation of the scaffold alone or by the method of microfractures were filled with fibrous cartilage with worse macroscopic, histological and immunohistochemial indicators.

scholarly journals Adipose Derived-Mesenchymal Stem Cells Viability and Differentiating Features for Orthopaedic Reparative Applications: Banking of Adipose Tissue

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Ilaria Roato ◽  
Daniela Alotto ◽  
Dimas Carolina Belisario ◽  
Stefania Casarin ◽  
Mara Fumagalli ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Adipose Tissue ◽  
Articular Cartilage ◽  
Tissue Banking ◽  
Stromal Vascular Fraction ◽  
Single Infusion ◽  
Knee Arthritis ◽  
Symptomatic Knee

Osteoarthritis is characterized by loss of articular cartilage also due to reduced chondrogenic activity of mesenchymal stem cells (MSCs) from patients. Adipose tissue is an attractive source of MSCs (ATD-MSCs), representing an effective tool for reparative medicine, particularly for treatment of osteoarthritis, due to their chondrogenic and osteogenic differentiation capability. The treatment of symptomatic knee arthritis with ATD-MSCs proved effective with a single infusion, but multiple infusions could be also more efficacious. Here we studied some crucial aspects of adipose tissue banking procedures, evaluating ATD-MSCs viability, and differentiation capability after cryopreservation, to guarantee the quality of the tissue for multiple infusions. We reported that the presence of local anesthetic during lipoaspiration negatively affects cell viability of cryopreserved adipose tissue and cell growth of ATD-MSCs in culture. We observed that DMSO guarantees a faster growth of ATD-MSCs in culture than trehalose. At last, ATD-MSCs derived from fresh and cryopreserved samples at −80°C and −196°C showed viability and differentiation ability comparable to fresh samples. These data indicate that cryopreservation of adipose tissue at −80°C and −196°C is equivalent and preserves the content of ATD-MSCs in Stromal Vascular Fraction (SVF), guaranteeing the differentiation ability of ATD-MSCs.

scholarly journals ARE CD44+/CD24– CELLS THE ASSUMED CANCER STEM CELLS IN BREAST CANCER

2017 ◽  
Vol 39 (3) ◽  
pp. 224-228 ◽  
Author(s):  
D E Ryspayeva ◽  
I I Smolanka ◽  
A S Dudnichenko ◽  
A A Lyashenko ◽  
Yu A Grinevich ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cells ◽  
Cancer Stem Cells ◽  
Clinical Outcomes ◽  
Disease Free Survival ◽  
Immunohistochemical Method ◽  
Risk Of Death ◽  
Significant Difference ◽  
Group A ◽  
Group B

Identification and characterization of the population of cancer stem cells (CSC) depends on several cellular markers, which combination is specific for the phenotype of CSC in the corresponding tumor. Several markers of CSC have already been identified in breast cancer (BC), but there are no universal indicators that could specifically identify the CSC in BC. Aims: To determine the validation of the CSC model for cell surface markers such as CD44 and CD24 and their clinical significance. Materials and Methods: Primary tumor samples of 45 patients with invasive BC without chemotherapy prior to surgery exposure were examined in paraffin blocks. CD44 and CD24 antigens expression was evaluated by the percentage of positive cells using different chromogens and the MultiVision detection system by immunohistochemical method. In this research the evaluation was determined by the following criteria: (-), negative — expression in < 10% of tumor cells; (+), positive — expression in ≥10% of cells. The same scoring system was applied for the expression of CD44+/CD24−. Results: 62.2% of investigated patients are patients older than 50 years and most of them with stage II of disease (71.0%) and luminal tumor subtypes (68.9%). We analysed the expression of CD44, CD24 and CD44+/CD24− for different patients with dividing them into two groups. The group A consists of patients with unfavorable prognosis (relapses and metastases have occurred in the first three years after diagnosis), and the group B — with a favourable prognosis (the development of metastases after three years). Median disease-free survival in the group A is 19 months, in the group B — 46 months. The difference between the overall survival (OS) curves in the groups A and B is statistically significant (p < 0.001), the risk of death was higher in the group A (hazard ratio (HR) 5.9; confidence interval (CI) 2.3–15.2). The content of CD44 cells did not differ statistically between groups A and B (p = 0.18), but there was a tendency for increasing in OS with the existence of CD44+ cells (p = 0.056). The distribution of the expression of CD24 marker did not differ between the groups (p = 0.36) as well as the OS curves (p = 0.59). Analysis of the expression of CD44+/CD24− which were considered as possible CSC, revealed a paradoxical increase (p = 0.03) of the frequency in patients of the group B (40.9%) compared to the group A (8.7%). Nevertheless, the comparison of the clinical outcomes did not reveal a statistically significant difference in the survival curves in the groups with existence and absence of CD44+/CD24– expression (p = 0.08). The analysis showed the increasing of the risk of worse clinical outcomes in the cases of expression absence of CD44+/CD24− (HR 2.8; CI 1.1–6.8). Conclusions: As a result of our research, the analysis of the quantity of assumed stem cells of the BC, which were identified by immunohistochemistry as CD44 and CD24 cells, failed to detect a statistically significant relation between groups of patients with different prognosis, and the identification of their expression is not enough for the characteristics of CSC. The obtained data demonstrating the worst clinical outcome in the cases of absence of CD44+/CD24− expression apparently require further investigations and the validation of the immunohistochemical method with the determination of the cut-off line in defining of CD44 and CD24 status.

scholarly journals COMPARISON BETWEEN THERAPEUTIC ULTRASOUND AND SCAR MOBILIZATION OVER PERSISTENT POSTNATAL DYSPAREUNIA

2017 ◽  
Vol 10 (9) ◽  
pp. 48
Author(s):  
Mariyam Farzana Sf ◽  
Ponmathi P ◽  
Sivakumar Pvr
Keyword(s):  
Quality Of Life ◽  
Analogue Scale ◽  
Therapeutic Ultrasound ◽  
Ultrasound Therapy ◽  
Age Group ◽  
Functional Index ◽  
Significant Difference ◽  
Group A ◽  
Group B

  Objective: Dyspareunia is known as the painful sexual intercourse. This study was conducted to compare the effectiveness between therapeutic ultrasound and scar mobilization in persistent postnatal dyspareunia.Methods: This is an experimental study. 30 subjects with superficial dyspareunia, age group between 25 and 35 years are taken in this study and 15 subjects in Group A were treated with ultrasound therapy, 15 subjects in Group B were treated with scar mobilization. Female sexual functional index questionnaire (FSFI) and visual analogue scale (VAS) were used as the outcome measure.Results: Results showed a significant difference in FSFI and VAS measurements in both the groups, but clinically Group A showed better improvement in pain and quality of life than Group B.Conclusion: There is no significant difference between ultrasound therapy and scar mobilization over the pain and quality of life in patients with persistent postnatal dyspareunia.

scholarly journals The Effect on Performance Time and Quality of the Knots after Mono or Bimanual Training of Laparoscopic Intracorporeal Knot Tying according to the Gladiator Rule Technique

2018 ◽  
Vol 40 (05) ◽  
pp. 266-274
Author(s):  
Fernanda Asencio ◽  
Helizabet Ribeiro ◽  
Armando Romeo ◽  
Arnauld Wattiez ◽  
Paulo Ribeiro
Keyword(s):  
Dominant Hand ◽  
Resident Students ◽  
Performance Time ◽  
Laparoscopic Suture ◽  
Significant Difference ◽  
Bimanual Training ◽  
Group A ◽  
Group B ◽  
Intracorporeal Knot Tying

Objective To assess whether the monomanual or bimanual training of laparoscopic suture following the same technique may interfere with the knots' performance time and/or quality. Methods A prospective observational study involving 41 resident students of gynecology/obstetrics and general surgery who attended a laparoscopic suture training for 2 days. The participants were divided into two groups. Group A performed the training using exclusively their dominant hand, and group B performed the training using both hands to tie the intracorporeal knot. All participants followed the same technique, called Romeo Gladiator Rule. At the end of the course, the participants were asked to perform three exercises to assess the time it took them to tie the knots, as well as the quality of the knots. Results A comparative analysis of the groups showed that there was no statistically significant difference (p = 0.334) between them regarding the length of time to tie one knot. However, when the time to tie 10 consecutive knots was compared, group A was faster than group B (p = 0.020). A comparison of the knot loosening average, in millimeters, revealed that the knots made by group B loosened less than those made by group A, but there was no statistically significant difference regarding the number of knots that became untied. Conclusion This study demonstrated that the knots from group B showed better quality than those from group A, with lower loosening measures and more strength necessary to untie the knots. The study also demonstrated that group A was faster than B when the time to tie ten consecutive knots was compared.

scholarly journals The Effect of Bone Marrow Mesenchymal Stem Cells Application on Distracted Bone Quality during Rapid Rate of Distraction Osteogenesis

2018 ◽  
Vol 11 (3) ◽  
pp. 192-198
Author(s):  
Marwa El Kassaby ◽  
Khaled Abd El Kader ◽  
Nahed Khamis ◽  
Alaa Al Hammoud ◽  
Alaa Ben Talb ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Bone Quality ◽  
Distraction Osteogenesis ◽  
Rapid Rate ◽  
Marrow Mesenchymal Stem Cells ◽  
Group A ◽  
Group B ◽  
Post Hoc ◽  
Group D

Distraction osteogenesis (DO) bone regenerate usually suffers from an inferior quality especially with rapid rate. This study was conducted to investigate the effect of mesenchymal stem cells (MSCs) application on different rates of distraction bone quality. Twenty-four goats were divided into group A with standard DO and group B with rapid distraction osteogenesis (RDO) both aided by MSCs. Group C with standard DO and group (D) with RDO were controls. Kruskal–Wallis test and Conover's post hoc analysis was used to evaluate significance ( p = 0.05). Histomorphometry showed a strongly significant (SS) increase ( p = 0.00036) in trabecular bone (TB) in group A (TB = 174.7 μm, SD = 33.5) and group B (TB = 166.8 μm, SD = 14) compared with group C (TB = 115.4 μm, SD = 19.6) and group D (TB = 86.1 μm, SD = 9.3). There was SS decrease ( p = 0.00093) in osteoid percentage (OP) in group A (OP = 13.4%, SD = 2) and group B (OP = 11.5%, SD = 6.5) compared with group C (OP = 27.3, SD = 3.5) and group D (OP = 26.2%, SD = 2.6). Energy dispersive X-ray showed a nonsignificant increase ( p = 0.11) in calcification (Ca2+%) in group A (Ca2+% = 17.6%, SD = 4.9) and group B (Ca2+% = 17.6%, SD = 4.3) compared with group C (Ca2+ % = 14.2%, SD = 6.7) and group D (Ca2+% = 11.5%, SD = 2.4). MSCs application improved microscopic bone quality during standard DO and RDO. However, macroscopic bone quality improvement still needs further investigation.

Septoplasty Improves Life Quality Related to Allergy in Patients with Septal Deviation and Allergic Rhinitis

2011 ◽  
Vol 145 (6) ◽  
pp. 910-914 ◽  
Author(s):  
Young Hyo Kim ◽  
Beom Joon Kim ◽  
Kang Hyun Bang ◽  
Yoonseok Hwang ◽  
Tae Young Jang
Keyword(s):  
Quality Of Life ◽  
Allergic Rhinitis ◽  
Clinical Course ◽  
Septal Deviation ◽  
Vas Score ◽  
Medication Score ◽  
Significant Difference ◽  
Group A ◽  
Group B

Objective. Evaluate the effect of septoplasty on the clinical course of allergic rhinitis by comparing (1) symptom change using the Visual Analogue Scale (VAS), (2) change of the medication score, and (3) improvement of the quality of life using a questionnaire. Study Design. Prospective pilot. Setting. Academic tertiary rhinological practice. Subjects and Methods. Sixty-two patients who had undergone septoplasty and turbinoplasty for septal deviation and allergic rhinitis were enrolled in group A. Twenty-six patients who had undergone only turbinoplasty for allergic rhinitis were enrolled in group B. The VAS score, the Average Rescue Medication Score (ARMS), and the Rhinasthma Questionnaire for the quality of life were all obtained from each patient. These parameters were compared before and after the surgery and between the groups. Results. Both groups showed significant improvement of the VAS score ( P < .001). When the change of VAS was compared between groups, there was a significant difference in group A only for nasal obstruction ( P = .047). Comparison of the ARMS between groups showed significant improvement in both groups after the surgery ( P < .01). However, there were no differences between the groups. The Rhinasthma score of group A was significantly lowered after the surgery (56.4 ± 13.2 to 34.1 ± 12.3, P < .001). The Rhinasthma score of group A was significantly lower than that of group B after the surgery ( P = .004). Conclusions. This is the first research about the potential effect of septoplasty on the clinical course of allergic rhinitis. Further studies are needed to elucidate the mechanisms underlying these effects.

scholarly journals Functional and Radiological Comparison of Umbilical Cord Mesenchymal Stem Cells, Somatotropin, and Hyaluronic Acid Injection for Cartilage Repair in Early Osteoarthritis of the Knee: A Randomized Controlled Trial

2020 ◽  
Vol 8 (5_suppl5) ◽  
pp. 2325967120S0004
Author(s):  
J Fiolin ◽  
IH Dilogo ◽  
AMT Lubis ◽  
JA Pawitan ◽  
IK Liem ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Hyaluronic Acid ◽  
Knee Osteoarthritis ◽  
Umbilical Cord ◽  
Controlled Trial ◽  
Osteoarthritis Of The Knee ◽  
Significant Difference ◽  
Group A ◽  
Ikdc Score

The umbilical cord-mesenchymal stem cells (UC-MSC) has been shown to improve the viability of degenerated chondrocytes in knee osteoarthritis (KOA) in cellular level. Additional somatotropin injection also shown clinical improvement in patients. The present trial is conducted to assess the efficacy of umbilical cord mesenchymal stem cells (UC-MSC) in comparison to somatotropin and hyaluronic acid (HA) injection to treat and slow the progression of knee osteoarthritis. Methods: This study was conducted from January 2016 to April 2018 in Cipto Mangunkusumo General Hospital. A total of 28 knees from 15 patients with early KOA Kellgren Lawrence I-II were randomized into three groups. Group A was treated with 1x106 units of intra-articular UC-MSCs + 2 ml HA followed with 2 consecutive weeks of HA injection; group B was treated with the same dose of HA with additional 8 IU of Somatotropin; group C was treated as control. The International Knee Documentation Committee (IKDC) score, The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), visual analogue score (VAS), were assessed on the 1st and 3rd month, then every 3rd month until 12 months. Cartilage evaluation using MRI cartigram were performed at pre-implantation, and after the 6th and 12th month after implantation Results: General improvement were observed in all groups after 6 and 12 months. The IKDC score improved significantly among groups after 12 months (69.43 [48.3-89.66], 79.31 [51.72-90.08], and 75.9 [67.82-97.7] in group A, B, and C, respectively, p =0.005). We did not find a significant difference between groups in VAS and WOMAC results. However, we observed a medial T2 improvement in group A (39.55 [32.65-67.85] initially and 45.64 [38.12-70.65] 12 months after implantation). Conclusion: Injection of UC-MSC could improve knee function and cartilage profile in early KOA. However, further multicenter studies with larger samples are required to investigate the efficacy of such treatment for treating knee osteoarthritis.

Tissue Engineering of Necrotic Dental Pulp of Immature Teeth with Apical Periodontitis in Dogs: Radiographic and Histological Evaluation

2018 ◽  
Vol 42 (5) ◽  
pp. 373-382 ◽  
Author(s):  
Eman A El Ashiry ◽  
Najlaa M Alamoudi ◽  
Mahmoud K El Ashiry ◽  
Hagar A Bastawy ◽  
Douaa A El Derwi ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Stem Cells ◽  
Growth Factors ◽  
Dental Pulp ◽  
Dental Pulp Stem Cells ◽  
Apical Periodontitis ◽  
Permanent Teeth ◽  
Significant Difference ◽  
Group A ◽  
Group B

Aim: To evaluate tissue engineering technology to regenerate pulp-dentin like tissues in pulp canals of immature necrotic permanent teeth with apical periodontitis in dogs. Study design: The study was performed on 36 teeth in 12 dogs. The experiment was carried out using split mouth design. In each dog 3 teeth were selected for implementing the study procedure. Apical periodontitis was induced in Group A and B teeth. Group (A): immature upper left 2nd permanent incisors that were transplanted with a construct of autologous dental pulp stem cells with growth factors seeded in a chitosn hydrogel scaffold. Group (B): immature upper right 2nd permanent incisor that received only growth factors with scaffold. A third tooth in each dog was selected randomly for isolation of dental pulp stem cells (DPSCs). Both groups were closed with a double coronal seal of white MTA (Mineral trioxide aggregate) and glass ionomer cement. Both groups were monitored radiographically for 4 months and histologically after sacrificing the animals. Results: There was no statistically significant difference in radiographic findings between group (A) and group (B) for healing of radiolucencies, while there was statistically significant difference between group (A) and group (B) regarding radicular thickening, root lengthening and apical closure. Histologically, group (A) teeth showed regeneration of pulp- dentin like tissue while group (B) teeth did not show any tissue regeneration. Conclusion: Dental pulp stem cells and growth factors incorporated in chitosan hydrogel are able to regenerate pulp- dentine like tissue and help in complete root maturation of non-vital immature permanent teeth with apical periodontitis in dogs.

scholarly journals Comparison by Objective Parameters in Patients with Chronic Rhinosinusitis Managed Medically and Surgically (with and without Powered Instruments)

2016 ◽  
Vol 7 (3) ◽  
pp. ar.2016.7.0169
Author(s):  
Samarendra Behera ◽  
Satyawati Mohindra ◽  
Sourabha K. Patro ◽  
Ashok K. Gupta
Keyword(s):  
Chronic Rhinosinusitis ◽  
Test Scores ◽  
Mucociliary Clearance ◽  
Sinus Surgery ◽  
Clearance Time ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Treatment Surgery

Objective To compare mucociliary clearance time and quality of life in patients who underwent sinus surgery using conventional and powered instruments, and in patients who were treated nonsurgically. Methods A total of 151 patients with chronic rhinosinusitis were included. Fifty-four patients were treated conservatively, 48 patients were managed surgically by using conventional instruments and 49 patients were managed by using a microdebrider. Kupferberg nasal endoscopy grades, 20-item Sino-Nasal Outcome Test scores, Lund-Mackay scores, and mucociliary clearance time were analyzed. Results On comparison among the groups, it was found that there was a significant difference between group A (nonsurgically treated) compared with group B (surgery by conventional means) or group C (surgery with microdebrider) in nasal endoscopic grades, Lund-Mackay scores, 20-item Sino-Nasal Outcome Test scores, and mucociliary clearance time. However, in comparison between groups B and C, there was no statistically significant difference. Conclusion Mucociliary clearance time tended to recover after starting treatment for chronic rhinosinusitis both after conservative treatment and after surgical treatment. Surgery provided better improvement in different objective scores in chronic rhinosinusitis. There exists no statistical difference in parameters independent of the instrument used for surgery.

Does the Sweating Severity of Primary Hyperhidrosis Sites Affect Post-Sympathotomy Results?

2020 ◽  
Author(s):  
Hüseyín Ulaş Çınar ◽  
Burçin Çelik
Keyword(s):  
Patient Satisfaction ◽  
Clinical Improvement ◽  
Severity Score ◽  
Postoperative Results ◽  
Satisfaction Rate ◽  
Significant Difference ◽  
Group A ◽  
Primary Hyperhidrosis ◽  
Group B

Abstract Background Improvement in quality of life (QOL) and patient satisfaction after endoscopic thoracic sympathotomy (ETS) in patients with primary hyperhidrosis may be affected by various factors. We examined whether the preoperative sweating severity of primary hyperhidrosis sites affects postoperative results. Methods The records of 112 patients who underwent bilateral ETS were reviewed retrospectively. The patients were divided into three groups according to the sweating severity score obtained from all primary hyperhidrosis sites (primary hyperhidrosis severity score [PHSS]) and analyzed comparatively. Group A (PHSS = 1–4) included 22 patients, Group B (PHSS = 5–8) 36 patients, and Group C (PHSS ≥ 9) 54 patients. Outcome measures included QOL prior to surgery, improvement in QOL after surgery, degree of clinical improvement, presence, severity, localization, and site number of reflex sweating (RS) and general patient satisfaction after 6 months of surgery. Results The preoperative QOL of patients with higher PHSS (groups B, C) was worse than other patients (group A). More than 91% of all patients had any level improvement in QOL, and over 96% had slight or great clinical improvement. RS developed in 80% of the patients, mostly in the back, very severe in 8%, and in median two different body areas. The overall patient satisfaction rate was more than 95%. There was no significant difference between the three groups in terms of all postoperative results. Conclusion Preoperative sweating severity of primary hyperhidrosis sites does not affect post-sympathotomy results. Surgeons should not be worried when deciding upon surgery, even in patients with high sweating severity.

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