Fractures and injuries pertaining to bone tissue usually take prolonged periods for its natural healing. To overcome this problem, the field of bone tissue engineering (BTE) has acquired an efficient designing mechanism that incorporates cells, biomaterials and the corresponding growth factors to promote both osteogenesis as well as mineralization of the bone. Amidst the various techniques available for scaffold creation, electrospinning is considered superior as it paves the way for the creation of nanostructured scaffolds using biopolymers. Chitosan (CS) and Gelatin (Gel) are two of the cardinal natural biopolymers used in the field of biomaterials and tissue engineering. They can be used either exclusively or in combination with other biopolymers for the enhancement of bone regeneration. Hence, this review aims to render an elaborate study on the CS and Gel-based nanofibrous scaffolds with and without additional composites and the properties that they portray in terms of BTE.
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http://dx.doi.org/10.1016/j.ijbiomac.2019.04.115 | DOI Listing |
Sci Rep
December 2024
Department of Forensic Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan.
The position of the mental foramen is reported to change with age. This study aimed to examine age-related changes in the position of the mental foramen in men and women. Among 200 cases (age 21-100 years; 400 foramina) that underwent postmortem computed tomography, 109 (age 21-93 years; 218 foramina) with mandibular first and second premolars were examined using image analysis software to classify the position of the mental foramen according to Fishel's classification, and the χ² test was performed.
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December 2024
Department of Orthopedic Surgery, Arthroscopy and Joint Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
The humeral head is the second most common anatomical site of osteonecrosis after the femoral head. Studies have reported satisfactory clinical outcomes after shoulder arthroplasty to treat osteonecrosis of the humeral head (ONHH). However, there are concerns regarding implant longevity in relatively young patients.
View Article and Find Full Text PDFNat Commun
December 2024
Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.
The potential for mitigating intestinal inflammation through the gut-bone axis in the treatment of osteoporosis is significant. While various gut-derived postbiotics or bacterial metabolites have been created as dietary supplements to prevent or reverse bone loss, their efficacy and safety still need improvement. Herein, a colon-targeted drug delivery system is developed using surface engineering of polyvinyl butyrate nanoparticles by shellac resin to achieve sustained release of postbiotics butyric acid at the colorectal site.
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December 2024
Department of Dermatology, Course of Integrated Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Psoriasis is a multifactorial disorder mediated by IL-17-producing T cells, involving immune cells and skin-constituting cells. Semaphorin 4A (Sema4A), an immune semaphorin, is known to take part in T helper type 1/17 differentiation and activation. However, Sema4A is also crucial for maintaining peripheral tissue homeostasis and its involvement in skin remains unknown.
View Article and Find Full Text PDFIndian J Med Res
November 2024
Department of Pediatrics, All India Institute of Medical Sciences, Patna, India.
Background & objectives Our study aims to provide the diversity of stem cell use for non-malignant, non-haematological diseases in India through the lens of clinical trials. Methods A PRISMA approach was used to evaluate the safety and efficacy of stem cell use for the period 2001-2021 in India. The outcomes were measured using each disease category, types of stem cells, the origin of stem cells, safety, and efficacy.
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