Comparative study of the effectiveness and safety of porcine and bovine atelocollagen in Asian nasolabial fold correction

Moon, Suk-Ho,Lee, Yoon-Jae,Rhie, Jong-Won,Suh, Dong-Sam,Oh, Deuk-Young,Lee, Joong-Ho,Kim, Young-Jin,Kim, Sue-Min,Jun, Young-Joon Informa Healthcare 2015 Journal of plastic surgery and hand surgery Vol.49 No.3

<P>Bovine-derived collagen has been used for soft-tissue augmentation since 1977. However, there are issues regarding the possibility of bovine spongiform encephalopathy (BSE). Researchers discovered that the histologic structure of porcine-derived collagen is similar to that of human dermal collagen and that it is free from the risk of BSE. This study was conducted to establish the effectiveness and safety of porcine-derived collagen compared to bovine-derived collagen. The 73 patients included in this study were healthy volunteers who responded to an advertisement approved by the Institutional Review Board (IRB). They had visited the authors’ hospital complaining of wrinkles on their nasolabial fold. Either porcine (TheraFill®) or bovine atelocollagen was randomly injected into each side of their nasolabial folds, and the five-grade Wrinkle Severity Rating Scale (WSRS) was used to evaluate the wrinkles before and after the injection. The average age of the 73 study patients was 46.18 years. The WSRS scores of the porcine and bovine atelocollagen-injected patients were 2.90 ± 0.71 and 2.85 ± 0.72 at the baseline and 2.15 ± 0.70 and 2.21 ± 0.67 after 6 months. There were no statistically significant differences between the two groups. Adverse effects of the porcine atelocollagen injection were seen in 12 patients, with the most common symptom being redness. This study showed that porcine atelocollagen can be used easily and without the need for the skin testing which is necessary before bovine atelocollagen injection. The efficacy of porcine atelocollagen is also similar to that of bovine atelocollagen.</P>

Bone Regeneration in the Extraction Socket Filled with Atelocollagen: Histological and Radiographic Study in Beagle Dogs

이현종,노관태,이덕원 대한치의학회 2016 Journal of korean dental science Vol.9 No.2

Purpose: Alveolar bone develops with tooth eruption and is absorbed following tooth extraction. Various ridge preservation techniques have sought to prevent ridge atrophy, with no superior technique evident. Collagen has a long history as a biocompatible material. Its usefulness and safety have been amply verified. The related compound, atelocollagen, is also safe and displays reduced antigenicity since telopeptides are not present. Materials and Methods: The current study evaluated whether the Rapiderm® atelocollagen plug (Dalim Tissen, Seoul, Korea) improves tissue healing of extraction sockets and assessed the sequential pattern of bone regeneration using histology and microcomputed tomography in six beagle dogs. To assess the change of extraction socket, hard tissues were examined 2, 4, 6, and 8 weeks after tooth extraction. Result: The experimental groups showed better bone fill with slow remodeling process compared to the control groups although there was no statistical difference between groups. Conclusion: The atelocollagen seems to have a tendency to slow bone remodeling in the early phase of healing period and maintain remodeling capacity until late phase of remodeling. Also, use of atelocollagen increased the bone-to-tissue ratio compared to healing of untreated extraction socket.

Bone Regeneration in the Extraction Socket Filled with Atelocollagen: Histological and Radiographic Study in Beagle Dogs

Lee, Hyeonjong,Noh, Kwantae,Lee, Deok-Won Korean Academy of Dental Science 2016 Journal of korean dental science Vol.9 No.2

Purpose: Alveolar bone develops with tooth eruption and is absorbed following tooth extraction. Various ridge preservation techniques have sought to prevent ridge atrophy, with no superior technique evident. Collagen has a long history as a biocompatible material. Its usefulness and safety have been amply verified. The related compound, atelocollagen, is also safe and displays reduced antigenicity since telopeptides are not present. Materials and Methods: The current study evaluated whether the $Rapiderm^{(R)}$ atelocollagen plug (Dalim Tissen, Seoul, Korea) improves tissue healing of extraction sockets and assessed the sequential pattern of bone regeneration using histology and microcomputed tomography in six beagle dogs. To assess the change of extraction socket, hard tissues were examined 2, 4, 6, and 8 weeks after tooth extraction. Result: The experimental groups showed better bone fill with slow remodeling process compared to the control groups although there was no statistical difference between groups. Conclusion: The atelocollagen seems to have a tendency to slow bone remodeling in the early phase of healing period and maintain remodeling capacity until late phase of remodeling. Also, use of atelocollagen increased the bone-to-tissue ratio compared to healing of untreated extraction socket.

Effect of co-administration of atelocollagen and hyaluronic acid on rotator cuff healing

Jeung Yeol Jeong,Eun Kyung Khil,Tae Soung Kim,Young Woo Kim 대한견주관절의학회 2021 대한견주관절의학회지 Vol.24 No.3

Background: This study aimed to evaluate the co-administration effect of atelocollagen combined with hyaluronic acid (HA) injections for treatment of full-thickness rotator cuff tear (RCT). Methods: Eighty patients who underwent arthroscopic rotator cuff repair for full-thickness RCT from March 2018 to November 2019 were enrolled. The patients were randomly allocated to the following groups: combined atelocollagen and HA injection (group I, n=28), only HA injection (group II, n=26), and no injection (group III, n=26). Clinical outcomes were assessed at 3, 6, and 12 months after surgery using the American Shoulder and Elbow Surgeons score, visual analog scale pain score, functional scores (pain visual analog scale, function visual analog score), and range of motion. Magnetic resonance imaging was performed 12 months after surgery to evaluate rotator cuff integrity. Results: Preoperative demographic data and postoperative clinical outcomes did not differ significantly among the three groups (p>0.05). However, in group I, the number of steroid injections after surgery was significantly lower than that in the other groups (p=0.011). The retear rate on follow-up magnetic resonance imaging was significantly higher in group II (9.5%, n=2) and group III (13.6%, n=3) than in group I (0%) (p=0.021). Conclusions: Co-administration of atelocollagen and HA improves healing of the rotator cuff and increases the integrity of the rotator cuff repair site. This study provides encouraging evidence for use of combined atelocollagen-HA injections to treat patients with full-thickness RCT.

Accelerate Bone Healing using Atelocollagen-based Solution Containing Bone Marrow-derived Mononuclear Cells(ASTEM-B) in Animal Bone Defect Model

( Jae Deog Jang ),( Hun Kim ),( Hyun Shin Park ),( Sang Hoon Woo ),( Jang Hoon Kim ),( Seon Ae Kim ),( Seok Jung Kim ) 한국조직공학·재생의학회 2008 조직공학과 재생의학 Vol.5 No.4

The osteogenic potential of autologous bone marrow derived mononuclear cells(MNCs) mixed with atelocollagen and hydroxy apatite when transplanted to bone defects was evaluated. 15 mm defect on radius were made in 27 NZW rabbits. The rabbits were divided into control, MATREX-B(atelocollagen and hydroxyl apatite mixture) and ASTEM-B(MATREX-B and MNCs mixture) groups as treatments. Each group was scheduled to be sacrificed at 3, 6 or 9 weeks after the operation and took an x-ray for radiological evaluation and tissue staining with Masson`s trichrome. At 9 weeks after the operation, ASTEM-B and MATREX-B treated group showed an excellent bone healing results. At 6 weeks after the operation, ASTEM-B treated group showed that most of the injected collagen gel formulation was converted to bone like tissue in the defect area. At 6 weeks after the operation, MATREX-B treated group showed an initial step in bone remodeling process. In case of control group, bone healing effect in defect area at 6 or 9 weeks after the operation showed a slight bone formation, but symptom of bone remodeling was not observed. In this research, atelocollagen gel formulation with autologous bone marrow derived mononuclear cells showed an accelerated bone healing using the rabbit model with critical bone defect.

Intra-Articular Atelocollagen Injection for the Treatment of Articular Cartilage Defects in Rabbit Model

Suh Dong Sam,Yoo Ji Chul,Woo Sang Hun,Kwak Andrew S. 한국조직공학과 재생의학회 2021 조직공학과 재생의학 Vol.18 No.4

Background: Atelocollagen is widely recognized as a biomaterial for regenerative medicine because of its good compatibility and low antigenicity. Injury of the outermost layer of articular cartilage, known as the lamina splendens, can lead to osteoarthritis (OA) and eventually full-thickness cartilage loss. The intra-articular injection of atelocollagen has been designed to restore the cartilage layer and cartilage defects in OA joints. In this study, we investigated the efficacy of atelocollagen as a cartilage supplement for joint defects. Methods: In this study, we evaluated the therapeutic effects of atelocollagen in animals with cartilage defects. Femoral groove defects were artificially created in 12 male New Zealand white rabbits, which were treated with intra-articular injection of either atelocollagen (experimental) or normal saline (control). The results were observed 3, 6, 9, and 12 weeks following macroscopic and histological evaluations. Results: At 3 weeks, cartilage tissue was restored in the experimental group, whereas the control group did not show signs of restoration. At 12 weeks, defects in both groups were filled with regenerated tissue, but the experimental group displayed a morphologically better appearance. Histologically, the regenerated tissue in the experimental group showed statistically significant improvement compared to the control group, with a structure similar to that of normal articular cartilage. Conclusion: The results showed that the intra-articular injection of atelocollagen enhanced cartilage regeneration following rabbit patellar groove defects. Therefore, intra-articular injection of atelocollagen can be used as an effective supplement for joint defects. Background: Atelocollagen is widely recognized as a biomaterial for regenerative medicine because of its good compatibility and low antigenicity. Injury of the outermost layer of articular cartilage, known as the lamina splendens, can lead to osteoarthritis (OA) and eventually full-thickness cartilage loss. The intra-articular injection of atelocollagen has been designed to restore the cartilage layer and cartilage defects in OA joints. In this study, we investigated the efficacy of atelocollagen as a cartilage supplement for joint defects. Methods: In this study, we evaluated the therapeutic effects of atelocollagen in animals with cartilage defects. Femoral groove defects were artificially created in 12 male New Zealand white rabbits, which were treated with intra-articular injection of either atelocollagen (experimental) or normal saline (control). The results were observed 3, 6, 9, and 12 weeks following macroscopic and histological evaluations. Background: Atelocollagen is widely recognized as a biomaterial for regenerative medicine because of its good compatibility and low antigenicity. Injury of the outermost layer of articular cartilage, known as the lamina splendens, can lead to osteoarthritis (OA) and eventually full-thickness cartilage loss. The intra-articular injection of atelocollagen has been designed to restore the cartilage layer and cartilage defects in OA joints. In this study, we investigated the efficacy of atelocollagen as a cartilage supplement for joint defects. Methods: In this study, we evaluated the therapeutic effects of atelocollagen in animals with cartilage defects. Femoral groove defects were artificially created in 12 male New Zealand white rabbits, which were treated with intra-articular injection of either atelocollagen (experimental) or normal saline (control). The results were observed 3, 6, 9, and 12 weeks following macroscopic and histological evaluations. Results: At 3 weeks, cartilage tissue was restored in the experimental group, whereas the control group did not show signs of restoration. At 12 weeks, defects in both groups were filled with regenerated tissue, but the experimental group displayed a morphologically better appearance. Histologically, the regenerated tissue in the experimental group showed statistically significant improvement compared to the control group, with a structure similar to that of normal articular cartilage. Conclusion: The results showed that the intra-articular injection of atelocollagen enhanced cartilage regeneration following rabbit patellar groove defects. Therefore, intra-articular injection of atelocollagen can be used as an effective supplement for joint defects. Results: At 3 weeks, cartilage tissue was restored in the experimental group, whereas the control group did not show signs of restoration. At 12 weeks, defects in both groups were filled with regenerated tissue, but the experimental group displayed a morphologically better appearance. Histologically, the regenerated tissue in the experimental group showed statistically significant improvement compared to the control group, with a structure similar to that of normal articular cartilage. Conclusion: The results showed that the intra-articular injection of atelocollagen enhanced cartilage regeneration following rabbit patellar groove defects. Therefore, intra-articular injection of atelocollagen can be used as an effective supplement for joint defects.

Atelocollagen Scaffold Enhances Cartilage Regeneration in Osteochondral Defects: A Study in Rabbits

Yoo Ji Chul,Kim Man Soo,Sohn Sueen,Woo Sang Hun,Choi Yu Ri,Kwak Andrew S.,Lee Dong Shin 한국조직공학과 재생의학회 2024 조직공학과 재생의학 Vol.21 No.2

Background: To enhance articular cartilage healing, microfractures (Mfx) and bone marrow aspirate concentrate (BMAC) are commonly used, and some form of scaffold is often used together to increase its efficacy. Herein, we compared the efficacy of atelocollagen scaffold to that of collagen scaffold when used with Mfx or BMAC on osteochondral defect of animal. Methods: This experiment was designed in two stages, and therapeutic effects of Mfx and BMAC were respectively evaluated when used with atelocollagen or collagen scaffold. Femoral condyle defects were artificially created in male New Zealand White rabbits, and in each stage, 12 rabbits were randomly allocated into three treatment groups: test group with additional atelocollagen scaffold, the positive control group with collagen scaffold, and the negative control group. Then, for 12 weeks, macroscopic and histological evaluations were performed. Results: At 12 weeks, defects in the test group were fully regenerated with normal cartilage-like tissue, and were well integrated with the surrounding cartilage at both stages experiment, whereas defects in the control groups were not fully filled with regenerated tissue, and the tissue appeared as fibrous tissue. Histologically, the regenerated tissue in the test group showed a statistically significant improvement compared to the positive and negative control groups, achieving a similar structure as normal articular cartilage. Conclusion: The results showed that implantation of the atelocollagen scaffold enhanced cartilage regeneration following osteochondral defects in rabbits. This suggests that the atelocollagen scaffold can be used with Mfx or BMAC for effective regeneration of osteochondral defects. Background: To enhance articular cartilage healing, microfractures (Mfx) and bone marrow aspirate concentrate (BMAC) are commonly used, and some form of scaffold is often used together to increase its efficacy. Herein, we compared the efficacy of atelocollagen scaffold to that of collagen scaffold when used with Mfx or BMAC on osteochondral defect of animal. Methods: This experiment was designed in two stages, and therapeutic effects of Mfx and BMAC were respectively evaluated when used with atelocollagen or collagen scaffold. Femoral condyle defects were artificially created in male New Zealand White rabbits, and in each stage, 12 rabbits were randomly allocated into three treatment groups: test group with additional atelocollagen scaffold, the positive control group with collagen scaffold, and the negative control group. Then, for 12 weeks, macroscopic and histological evaluations were performed. Results: At 12 weeks, defects in the test group were fully regenerated with normal cartilage-like tissue, and were well integrated with the surrounding cartilage at both stages experiment, whereas defects in the control groups were not fully filled with regenerated tissue, and the tissue appeared as fibrous tissue. Histologically, the regenerated tissue in the test group showed a statistically significant improvement compared to the positive and negative control groups, achieving a similar structure as normal articular cartilage. Conclusion: The results showed that implantation of the atelocollagen scaffold enhanced cartilage regeneration following osteochondral defects in rabbits. This suggests that the atelocollagen scaffold can be used with Mfx or BMAC for effective regeneration of osteochondral defects.

Clinical outcome of ultrasound-guided atelocollagen injection for patients with partial rotator cuff tear in an outpatient clinic: a preliminary study

Sang Hoon Chae,Jae Yeon Won,Jae Chul Yoo 대한견주관절학회 2020 대한견주관절학회지 Vol.23 No.2

Background: Atelocollagen has been studied for restoration of rotator cuff tendon. In this study, we attempted to evaluate the clinical outcome of ultrasound-guided atelocollagen injection in an outpatient clinic for patients with partial rotator cuff tear. Methods: We recruited 42 outpatients who visited our hospital from May 2019 to September 2019. Atelocollagen injection was performed in patients with partial rotator cuff tear diagnosed by magnetic resonance imaging and ultrasound. American Shoulder and Elbow Surgeons (ASES), Constant, Korean Shoulder Score (KSS) and Simple Shoulder Test (SST) scores, and range of motion were assessed before injection and after two months. Statistically, we analyzed the clinical results using the Wilcoxon signed rank test. Results: Finally, 15 patients were enrolled for analysis. There was no significant difference between pre- and post-injection in terms of range of motion, ASES (57.0 vs. 60.4), Constant (56.4 vs.58.9), KSS (64.6 vs.68.5), and pain-visual analog scale (4.2 vs.3.7), except function-visual analog scale (F-VAS; 6.3 vs.7.1) and SST (6.6 vs.6.9). A significant difference was found in SST (P=0.046) and F-VAS (P=0.009). According to the ultrasound results at 2 months, we found hyperechoic materials in three of seven patients. The most common complication of atelocollagen injection was post-injection pain (53%, 8/15). Conclusions: Ultrasound-guided atelocollagen injection for partial rotator cuff tear showed no significant change in terms of clinical outcomes, except for F-vas and SST score. Tendon regeneration was not clear due to the remnants of atelocollagen present at 2-month follow-up ultrasound. There seems to be alarming post-injection pain for 2 to 3 days in the patients who received atelocollagen injection in an outpatient clinic.

A Clinical and Histological Evaluation for Healing of Dehiscence Defects Filled with an Absorbable Atelocollagen Sponge in Dogs

( Sang Joun Yu ),( Sang Sik Moon ),( Hyun Seon Jang ),( Kyung Yoon Han ),( Kwang Se Hwang ),( Seong Ho Choi ),( Young Hyuk Kwon ),( Byung Ock Kim ) 한국조직공학·재생의학회 2012 조직공학과 재생의학 Vol.9 No.6

The objective of this study was to evaluate the effect of absorbable atelocollagen sponge on healing of hard tissue of buccal dehiscence defects in mongrel dogs. The mandibular second and fourth premolars of 12 dogs were extracted. Group 1 and Group 2 consisted of dogs without and with an inserted atelocollagen sponge after extraction with buccal plate preservation ; Group 3 and Group 4 consisted of dogs without and with an inserted atelocollagen sponge after removing two thirds of the buccal wall. At 10 weeks, Group 4 presented a significantly greater increase in the height of the alveolar bone crest than that of Group 3. Histologically, Group 2 and Group 4 showed better new bone formation ability than Groups 1, 3 at 6 weeks after extraction. The new bone formation ability of Group 3 was the poorest at 10 weeks. The results showed that the transplantation of absorbable atelocollagen sponge in the extraction socket can promote new bone formation and compensate marginal ridge reconstruction.

Does the Use of Injectable Atelocollagen during Arthroscopic Rotator Cuff Repair Improve Clinical and Structural Outcomes?

In Bo Kim,Eun Yeol Kim,Kuk Pil Lim,Ki Seong Heo 대한견주관절학회 2019 대한견주관절의학회지 Vol.22 No.4

Background: Since the establishment of biological augmentation to improve the treatment of rotator cuff tears, it is imperative to explore newer techniques to reduce the retear rate and improve long-term shoulder function after rotator cuff repair. This study was undertaken to determine the consequences of a gel-type atelocollagen injection during arthroscopic rotator cuff repair on clinical outcomes, and evaluate its effect on structural integrity. Methods: Between January 2014 and June 2015, 121 patients with full thickness rotator cuff tears underwent arthroscopic rotator cuff repair. Of these, 61 patients were subjected to arthroscopic rotator cuff repair in combination with an atelocollagen injection (group I), and 60 patients underwent arthroscopic rotator cuff repair alone (group II). The visual analogue scale (VAS) for pain and the Korean Shoulder Society (KSS) scores were evaluated preoperatively and postoperatively. Magnetic resonance imaging (MRI) was performed at 6 months postoperatively, to assess the integrity of the repair. Results: VAS scores were significantly lower in group I than in group II at 3, 7, and 14 days after surgery. KSS scores showed no significant difference between groups in the 24 months period of follow-up. No significant difference was obtained in the healing rate of the rotator cuff tear at 6 months postoperatively (p=0.529). Conclusions: Although a gel-type atelocollagen injection results in reduced pain in patients at 2 weeks after surgery, our study does not substantiate the administration of atelocollagen during rotator cuff repair to improve the clinical outcomes and healing of the rotator cuff.