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Bojalil R, Ruíz-Hernández A, Villanueva-Arias A, Amezcua-Guerra LM, Cásarez-Alvarado S, Hernández-Dueñas AM, Rodríguez-Galicia V, Pavón L, Marquina B, Becerril-Villanueva E, Hernández-Pando R, Márquez-Velasco R. Two murine models of sepsis: immunopathological differences between the sexes-possible role of TGFβ1 in female resistance to endotoxemia. Biol Res 2023; 56:54. [PMID: 37875957 PMCID: PMC10594922 DOI: 10.1186/s40659-023-00469-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/12/2023] [Indexed: 10/26/2023] Open
Abstract
Endotoxic shock (ExSh) and cecal ligature and puncture (CLP) are models that induce sepsis. In this work, we investigated early immunologic and histopathologic changes induced by ExSh or CLP models in female and male mice. Remarkable results showed that females supported twice the LD100 of LPS for males, CLP survival and CFU counts were similar between genders, high circulating LPS levels in ExSh mice and low levels of IgM anti-LPS in males. In the serum of ExSh males, TNF and IL-6 increased in the first 6 h, in CLP males at 12 h. In the liver of ExSh mice, TNF increased at 1.5 and 12 h, IL-1 at 6 h. TGFβ1 increased in females throughout the study and at 12 h in males. In CLP mice, IL-6 decreased at 12 h, TGFβ1 increased at 6-12 h in males and at 12 h in females. In the lungs of ExSh males, IL-1β increased at 1.5-6 h and TGFβ1 at 12 h; in females, TNF decrease at 6 h and TGFβ1 increased from 6 h; in CLP females, TNF and IL-1β decreased at 12 h and 1.5 h, respectively, and TGFβ1 increased from 6 h; in males, TGFβ1 increased at 12 h. In the livers of ExSh mice, signs of inflammation were more common in males; in the CLP groups, inflammation was similar but less pronounced. ExSh females had leucocytes with TGFβ1. The lungs of ExSh males showed patches of hyaline membranes and some areas of inflammatory cells, similar but fewer and smaller lesions were seen in male mice with CLP. In ExSh females, injuries were less extent than in males, similar pulmonary lesions were seen in female mice with CLP. ExSh males had lower levels of TGFβ1 than females, and even lower levels were seen in CLP males. We conclude that the ExSh was the most lethal model in males, associated with high levels of free LPS, low IgM anti-LPS, exacerbated inflammation and target organ injury, while females showed early TGFβ1 production in the lungs and less tissue damage. We didn't see any differences between CLP mice.
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Affiliation(s)
- Rafael Bojalil
- Departamento de Inmunología, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
- Departamento de Atención a la Salud, Universidad Autónoma Metropolitana-Xochimilco, Mexico City, Mexico
| | - Armando Ruíz-Hernández
- Departamento de Inmunología, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
- Departamento de Farmacología, Facultad de Medicina, Universidad Autónoma de Baja California, Mexicali, Mexico
| | - Arturo Villanueva-Arias
- Departamento de Inmunología, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Luis Manuel Amezcua-Guerra
- Departamento de Inmunología, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
- Departamento de Atención a la Salud, Universidad Autónoma Metropolitana-Xochimilco, Mexico City, Mexico
| | - Sergio Cásarez-Alvarado
- Departamento de Inmunología, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | | | | | - Lenin Pavón
- Laboratorio de Psicoinmunología, Instituto Nacional de Psiquiatría Ramón de la Fuente, Mexico City, Mexico
| | - Brenda Marquina
- Departamento de Patología Experimental, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | | | - Rogelio Hernández-Pando
- Departamento de Patología Experimental, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Ricardo Márquez-Velasco
- Departamento de Inmunología, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico.
- Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana-Xochimilco, Mexico City, Mexico.
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Togo S, Imanishi H, Hayashi M, Koyama M, Kira Y, Sugawara K, Tsuruta D. Exploring the impact of ovariectomy on hair growth: can ovariectomized mouse serve as a model for investigating female pattern hair loss in humans? Med Mol Morphol 2022; 55:210-226. [PMID: 35486188 DOI: 10.1007/s00795-022-00320-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/06/2022] [Indexed: 11/29/2022]
Abstract
Female pattern hair loss (FPHL), a type of hair disease common in pre- and postmenopausal women, is characterized by thinning of hair to O-type, mainly at the crown. Although a mouse model of this disease has recently been established, its details are still unknown, and thus, warrants further analysis. In this study, 3 week-old and 7- to 8 week-old C57BL/6 female mice were divided into two groups: one group underwent ovariectomy (OVX), while the other underwent sham surgery. In the 3 week-old mice, the dorsal skin was collected at seven weeks of age, while in the 7- to 8 week-old mice, it was collected at 12 and 24 weeks of age. In the former group, both the pore size of the hair follicles (HFs) and diameter of the hair shaft of telogen HFs decreased upon OVX; while in the latter group, these factors increased significantly. Notably, the thickness of the dermis and subcutis increased significantly in the OVX group. It needs to be further elucidated whether OVX mouse could serve as an ideal mouse model for FPHL, but our results upon evaluation of skin thickness indicate that it could be used to establish a novel treatment for non-hair-related diseases, such as post-menopause-related skin condition.
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Affiliation(s)
- Sayaka Togo
- Department of Dermatology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Hisayoshi Imanishi
- Department of Dermatology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka, 545-8585, Japan.
| | - Masami Hayashi
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masayasu Koyama
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yukimi Kira
- Department of Research Support Platform, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Koji Sugawara
- Department of Dermatology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Daisuke Tsuruta
- Department of Dermatology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
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Exploring the Effect of Jiawei Buguzhi Pills on TGF- β-Smad Pathway in Postmenopausal Osteoporosis Based on Integrated Pharmacological Strategy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:5556653. [PMID: 34754316 PMCID: PMC8572597 DOI: 10.1155/2021/5556653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 08/27/2021] [Accepted: 09/17/2021] [Indexed: 02/06/2023]
Abstract
Objective To explore the effect of Jiawei Buguzhi Pills (JWBGZP) on the TGF-β-Smad pathway in postmenopausal osteoporosis (PMO) based on integrated pharmacological strategy. Method The ETCM database was used to collect JWBGZP. GeneCards and OMIM databases were utilized to obtain PMO-related genes. Cytoscape was used for network construction and analysis, and DAVID was used for GO and KEGG enrichment analysis of key targets. Animal experiments and cell experiments were conducted to further explore the mechanism. The bone mass density was detected by dual-energy X-ray bone densitometer. The TGF-β1 and Smad4 mRNA in bone tissue were detected by RT-qPCR. The TGF-β1 and Smad4 protein in bone tissue were detected by the western blot. The TGF-β1 and Smad4 protein in osteoblasts were determined by immunohistochemistry. Result A total of 721 JWBGZP potential targets and 385 PMO-related genes were obtained. The enrichment analysis showed that JWBGZP may regulate the TGF-beta signaling pathway, oxidation-reduction process, aging, response to hypoxia, response to ethanol, negative regulation of cell proliferation, PI3K-Akt, HIF-1, and other signaling pathways. The animal experiments showed that compared with the model group, the femoral bone mineral density and lumbar bone mineral density of the JWBGZP group increased (P < 0.05); the expression levels of TGF-β1 and Smad mRNA and proteins in the JWBGZP group were significantly higher (P < 0.05). The cell experiment results showed a large number of osteoblast stained blue-purple and orange-red calcified nodules. The expression levels of TGF-β1 and Smad proteins in the JWBGZP group were significantly higher than those in the blank control group and the sham operation group, and the protein expression levels in the model group were the lowest (P < 0.05). Conclusion JWBGZP may be involved in PI3K-Akt, HIF-1, estrogen, prolactin, and other signaling pathways and regulate MAPK1, AKT1, PIK3CA, JAK2, and other gene targets, regulate bone metabolism, and thereby treat PMO.
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Zhao F, Guo L, Wang X, Zhang Y. Analysis on risk factors for neck shortening after internal fixation for Pauwels II femoral neck fracture in young patients. Eur J Med Res 2021; 26:59. [PMID: 34167592 PMCID: PMC8223273 DOI: 10.1186/s40001-021-00531-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 06/13/2021] [Indexed: 11/23/2022] Open
Abstract
Background Femoral neck shortening can occur in young patients receiving internal fixation for Pauwels type II femoral neck fracture. The risk factors for neck shortening, which can affect hip function, are not clear. This study aimed to retrospectively identify risk factors for neck shortening after internal fixation with parallel partially threaded cannulated cancellous screws (FPTCS) for Pauwels type II femoral neck fracture in relatively young patients. Methods Clinical data from 122 cases with Pauwels type II femoral neck fracture from February 2014 to February 2019 were reviewed and analyzed, and causes of neck shortening were statistically analyzed. And the Chi-squared test or Fisher’s exact test was used to compare indicators. Multivariate analysis was conducted with non-conditional logistic regression analysis. Results Statistically significant differences were found in age, sex, BMD, BMI, fracture type, posterior medial cortex comminution, and reduction quality between patients with femoral neck shortening and those without femoral neck shortening. Logistic regression analysis showed that fracture type, posterior medial cortex comminution, and reduction quality were the main risk factors for neck shortening. Conclusion Fracture type, posterior medial cortex comminution, and reduction quality can be used as important reference indexes to predict the possibility of neck shortening after internal fixation with FPTCS for Pauwels type II femoral neck fracture in young patients. BMD and BMI may be also risk factors.
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Affiliation(s)
- Fulong Zhao
- Trauma Orthopedics, Beijing Luhe Hospital Affiliated To Capital Medical University, No. 82, Xinhua South road, Tongzhou District, Beijing, 101149, China.,Clinical Laboratory, Emergency General Hospital, Beijing, 100028, China
| | - Lijuan Guo
- Trauma Orthopedics, Beijing Luhe Hospital Affiliated To Capital Medical University, No. 82, Xinhua South road, Tongzhou District, Beijing, 101149, China.,Clinical Laboratory, Emergency General Hospital, Beijing, 100028, China
| | - Xuefei Wang
- Trauma Orthopedics, Beijing Luhe Hospital Affiliated To Capital Medical University, No. 82, Xinhua South road, Tongzhou District, Beijing, 101149, China.
| | - Yakui Zhang
- Trauma Orthopedics, Beijing Luhe Hospital Affiliated To Capital Medical University, No. 82, Xinhua South road, Tongzhou District, Beijing, 101149, China
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Sun T, Yang D, Wu Y, Sheng Q. The function of microRNA-211 expression in post-fracture bone cell apoptosis involving the transforming growth factor-β/ phosphoinositide 3-kinase signaling pathway. J Int Med Res 2021; 48:300060520926353. [PMID: 32720595 PMCID: PMC7388126 DOI: 10.1177/0300060520926353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background The underlying mechanism of micro (mi)RNA-211 in bone cell apoptosis after fracture
remains unclear. This study aimed to determine the effect and function of miRNA-211 in
bone cell apoptosis in fracture patients. Methods Serum samples were collected from patients with fractures and healthy controls. Serum
miR-211 expression was detected by quantitative PCR. MC3T3-E1 cells were transfected
with a transforming growth factor (TGF)-β inhibitor and phosphoinositide 3-kinase (PI3K)
inhibitor. The viability of MC3T3-E1 cells was detected by the MTT assay, and apoptosis
was detected by flow cytometry. Caspase-3/9 activity and the protein expression of
TGF-β, PI3K, and p-Akt were detected by western blot and immunoprecipitation. Results In the fracture group, miRNA-211 expression was significantly up-regulated compared
with controls. We used miRNA-211 mimics to up-regulate miRNA-211 expression, and
observed inhibited cell viability and induced apoptosis and lactate dehydrogenase (LDH)
activity. miRNA-211 up-regulation also suppressed the expression of TGF-β, PI3K, and
p-Akt proteins. Conversely, miRNA-211 down-regulation increased cell viability and
reduced apoptosis and LDH activity, as well as inducing the expression of TGF-β, PI3K,
and p-Akt. Inhibiting TGF-β decreased the effect of anti-miRNA-211 on osteocyte
apoptosis. Conclusion Our data indicate that miRNA-211 functions via the TGF-β/PI3K/Akt signaling pathway in
patients with fractures.
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Affiliation(s)
- Tongxin Sun
- Department of Orthopedics, Dongying People's Hospital, Dongying, Shandong province, P. R. China
| | - Dai Yang
- Department of Orthopedics, Dongying People's Hospital, Dongying, Shandong province, P. R. China
| | - Yuanpeng Wu
- Department of Orthopedics, Dongying People's Hospital, Dongying, Shandong province, P. R. China
| | - Qingang Sheng
- Department of Orthopedics, Dongying District People's Hospital, Dongying, Shandong province, P. R. China
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Barneze Costa SM, da Silva Feltran G, Namba V, Silva TM, Shetty Hallur RL, Saraiva PP, Zambuzzi WF, Nogueira CR. Infraphysiological 17β-estradiol (E2) concentration compromises osteoblast differentiation through Src stimulation of cell proliferation and ECM remodeling stimulus. Mol Cell Endocrinol 2020; 518:111027. [PMID: 32911016 DOI: 10.1016/j.mce.2020.111027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 01/02/2023]
Abstract
It has been shown that 17β-estradiol (E2) helps to prevent bone loss. This study was undertaken to verify whether E2 action in human osteoblasts involves changes in the transcriptional profile of the TNF-α, IFN-γ, NF-κB, TRAIL, TGF-β, MMP2, MMP9, RECK, TIMP1, TIMP2, CDK2, CDK4, SRC, RUNX2, and SHH genes. Infraphysiological doses of E2 elevated mRNAs in all genes except for INF-γ, TRAIL, and TGF-β. Importantly, a significant increase in the CDKs -2 and -4 genes was found, which strongly suggests cell cycle progression, with a potential dependency of Src involvement, as well as a suppression of the osteoblast differentiation machinery, with ECM remodeling being involved. These data suggest that E2 plays an important role in bone formation and remodeling, and Src seems to play a pivotal role in driving cell proliferation and ECM remodeling. Taken together, these findings contribute to an understanding of the effects of infraphysiological E2 on modulating bone homeostasis, favoring bone resorption, and leading to osteoporosis.
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Affiliation(s)
- Sarah Maria Barneze Costa
- Experimental Research Unit, School of Medicine of Botucatu (FMB), Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil
| | - Georgia da Silva Feltran
- Department of Chemistry and Biochemistry, Biosciences Institute, Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil
| | - Vickeline Namba
- Experimental Research Unit, School of Medicine of Botucatu (FMB), Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil
| | - Tabata Marilda Silva
- Experimental Research Unit, School of Medicine of Botucatu (FMB), Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil
| | - Raghavendra Lakshmana Shetty Hallur
- Experimental Research Unit, School of Medicine of Botucatu (FMB), Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil; Department of Gynecology and Obstetrics, School of Medicine of Botucatu (FMB), Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil
| | - Patrícia Pinto Saraiva
- Experimental Research Unit, School of Medicine of Botucatu (FMB), Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil
| | - Willian Fernando Zambuzzi
- Department of Chemistry and Biochemistry, Biosciences Institute, Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil.
| | - Celia Regina Nogueira
- Experimental Research Unit, School of Medicine of Botucatu (FMB), Sao Paulo State University (UNESP), Botucatu, 18618-970, Sao Paulo State, Brazil
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McCauley J, Bitsaktsis C, Cottrell J. Macrophage subtype and cytokine expression characterization during the acute inflammatory phase of mouse bone fracture repair. J Orthop Res 2020; 38:1693-1702. [PMID: 31989683 DOI: 10.1002/jor.24603] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/07/2020] [Accepted: 01/21/2020] [Indexed: 02/04/2023]
Abstract
Fracture repair is a complex process requiring heterotypic interactions between osteogenic cells and immune cells. Recent evidence indicates that macrophages are critically involved in fracture repair. Polarized macrophage populations differentially promote and regulate inflammation in other tissues, but little is known about the various macrophage subtypes and their signaling activities following a bone fracture. The authors hypothesized that classically activated (M1 subtype) and alternatively activated (M2 subtype) macrophages are active during the early repair process to initiate and regulate the inflammatory response. To test our hypothesis, bone marrow was collected from intact femurs (naïve group), contralateral and fractured femurs of mice on days 0, 1, 2, 4, and 7 postfracture. Macrophages were isolated from the bone marrow and macrophage subtypes were identified using flow cytometry with antibodies to F4/80, MHC II, CD86, CD11c, and CD40. Bone marrow cytokine levels were measured using xMAP. Flow cytometry revealed dynamic changes in M1 subtype (F4/80+/MHC II+/CD86+), M2 subtype (F4/80+/MHC II-/CD86-), and dendritic cell (DCs; MHCII+/CD11c+/CD40+) populations following fracture as compared to naïve controls. M1 subtype levels were correlated with IL-1α, IL-1ß, IL-2, IL-17, Eotaxin, and MCP-1, while DCs were correlated with IL-6, G-CSF, LIF, KC, and VEGF-A. The results indicate that M1 and M2 subtypes and DCs are recruited to the fracture site early during the repair process and consequently may work in tandem to regulate the inflammatory response required to recruit osteogenic cells needed for later stages of repair.
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Affiliation(s)
- James McCauley
- Department of Biological Sciences, Seton Hall University, South Orange, New Jersey
| | | | - Jessica Cottrell
- Department of Biological Sciences, Seton Hall University, South Orange, New Jersey
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Wang R, Lu A, Liu W, Yue J, Sun Q, Chen J, Luan H, Zhai Y, Li B, Jiang Z, Li Y. Searching for valuable differentially expressed miRNAs in postmenopausal osteoporosis by RNA sequencing. J Obstet Gynaecol Res 2020; 46:1183-1192. [PMID: 32429001 DOI: 10.1111/jog.14307] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 04/20/2020] [Accepted: 04/30/2020] [Indexed: 12/24/2022]
Abstract
AIM Postmenopausal osteoporosis is a systemic and chronic bone disease in women. In order to understand the pathological mechanism of postmenopausal osteoporosis, we aimed to find the potential differentially expressed miRNAs in the disease. METHODS Firstly, RNA sequencing was used to identify differentially expressed miRNAs, followed by the construction of the miRNA-target mRNA regulatory network. Then, Gene Ontology and the Kyoto Encyclopedia of Genes and Genomes were used to analyze the biological function of target mRNAs. Finally, electronic validation of identified differentially expressed miRNAs and target mRNAs was performed. RESULTS A total of 33 differentially expressed miRNAs (18 upregulated and 15 downregulated miRNAs) and 6820 miRNA-mRNA pairs were identified. Among which, seven miRNAs with high degree including hsa-miR-17-5p, hsa-miR-1-3p, hsa-miR-193b-3p, hsa-miR-125b-5p, hsa-miR-10b-5p, hsa-miR-100-5p and hsa-miR-30a-3p were obtained in the miRNA-mRNA regulatory network. TGF-beta was the most significantly enriched signaling pathway of target mRNAs. The electronic validation result of hsa-miR-1-3p, hsa-miR-193b-3p, hsa-miR-10b-5p, hsa-miR-100-5p, hsa-miR-133b, hsa-miR-708-5p, CRK, RAB5C, CCND1 and PCYOX1 was consisted with the RNA sequencing analysis. CONCLUSION Dysfunctional miRNAs may play significant roles in postmenopausal osteoporosis.
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Affiliation(s)
- Randong Wang
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Aiping Lu
- Department of Anesthesiology, Aviation General Hospital, Beijing, China
| | - Wangyan Liu
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Juan Yue
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Qiang Sun
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Jiao Chen
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Huijie Luan
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Yaling Zhai
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Bing Li
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Zhongcai Jiang
- Department of Pathology, Aviation General Hospital, Beijing, China
| | - Yingnan Li
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
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Wang C, Qi B, Zhang C, Cheng J. Identification of key genes influenced by fixation stability in early fracture hematoma and elucidation of their roles in fracture healing. Exp Ther Med 2017; 14:4633-4638. [PMID: 29201161 PMCID: PMC5704280 DOI: 10.3892/etm.2017.5192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 02/24/2017] [Indexed: 01/08/2023] Open
Abstract
The present study aimed to identify the key genes influenced by fixation stability in early fracture hematoma and to elucidate their roles in fracture healing. The GSE53256 gene expression profile, including six fracture hematoma tissues, was downloaded from the Gene Expression Omnibus database. The differentially expressed genes (DEGs) in the fracture hematoma tissues from old rats with rigid fixation compared with semi-rigid fixation were identified using the limma package. Furthermore, Gene Ontology (GO) enrichment analysis for DEGs was performed using BiNGO, and a protein-protein interaction (PPI) network was constructed based on the Search Tool for the Retrieval of Interacting Genes database. A total of 265 DEGs (158 upregulated and 107 downregulated) in the fracture hematoma tissues were screened out. Additionally, the overrepresented GO terms were mainly associated with the extracellular region, positive regulation of locomotion and response to external stimulus. Transforming growth factor, β 1 (Tgfβ1), chemokine (C-X-C motif) ligand 12 (Cxcl12), matrix metallopeptidase 9 (mmp9) and serpin peptidase inhibitor, clade E, member 1 (serpine1) had higher degrees and were hub nodes in the PPI network. In conclusion, fixation stability may influence the fracture healing process, and important DEGs, including Cxcl12, mmp9, Tgfβ1 and serpine1, may be important in this process.
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Affiliation(s)
- Chengxue Wang
- Department of Orthopedic Trauma, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Baochang Qi
- Department of Orthopedic Trauma, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Congfeng Zhang
- Department of Orthopedics, The Second People's Hospital of Yushu, Changchun, Jilin 130041, P.R. China
| | - Jieping Cheng
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
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Zhan Q, Gui X, Wang F, Yu P, Zhao M, Wang J, Xue C. Sialoglycoprotein isolated from the eggs of Gadus morhua enhances fracture healing in osteoporotic mice. Food Funct 2017; 8:1094-1104. [PMID: 28164198 DOI: 10.1039/c6fo01346e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Osteoporosis is a common disease in the elderly, which is related to fracture healing delay. In this study, the effects of treatment with sialoglycoprotein isolated from the eggs of Gadus morhua (Gm-SGP) on tibial fracture healing in ovariectomized (OVX) osteoporotic female C57BL/6J mice for 56 days post-fracture were investigated. The result showed that Gm-SGP treatment significantly increased serum angiogenic factors and bone formation markers on day 5 and 11 post-fracture when compared with the OVX group. In addition, histological results in the Gm-SGP group showed a stronger endochondral ossification, a stronger bony consolidation and a stronger bony callus remodeling capability on day 11, 24 and 35 post-fracture, respectively, in comparison with the OVX group. Meanwhile, micro-computerized tomography revealed that the Gm-SGP group had stronger bony callus remodeling capability as evidenced by higher BV/TV and Tb.N but lower Tb.Sp and shorter lengths of callus maximum cross section than the OVX group on day 24 post-fracture. Besides, the tibial callus bending stiffness was significantly enhanced in the Gm-SGP group as compared with the OVX group on day 56 post-fracture. Moreover, gene expression suggested that Gm-SGP promoted vascular invasion and endochondral ossification on day 11 post-fracture as well as bone formation on day 11 and 24 post-fracture via up-regulating the expression of angiogenesis factors (including VEGF, PDGF and Ang1), entochondrostosis factors (including Col2a1, Aggrecan, Col10a1 and MMP-13) and osteogenesis markers (including Col1a1, BMP-2 and OCN). This research suggests that Gm-SGP significantly improve fracture healing which is delayed by OVX-induced osteoporosis. The present study may contribute to providing important implications for the utilization of Gm-SGP from fish eggs as a functional food to enhance fracture healing.
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Affiliation(s)
- Qiping Zhan
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Xiong Gui
- School of Basic Medicine, Faculty of Medicine, Guangxi University of Science and Technology, Liuzhou, China
| | - Fei Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Peng Yu
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Meihui Zhao
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Jingfeng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
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Zhang H, Ta N. Effect of isopsoralen on Smad7 in osteoblastic MC3T3-E1 cells. Exp Ther Med 2017; 14:1561-1567. [PMID: 28810621 PMCID: PMC5526118 DOI: 10.3892/etm.2017.4688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 03/31/2017] [Indexed: 01/17/2023] Open
Abstract
The primary pathological change in postmenopausal osteoporosis (PM-OP) is bone collagen loss caused by estrogen depletion. Osteoblasts synthesize type I collagen, which composes the organic matrix of bone. Although isopsoralen stimulates osteoblastic cell proliferation and differentiation, transforming growth factor (TGF)-β1 is an important cell signaling factor for stimulating collagen synthesis. To explore the association between isopsoralen and the synthesis of collagen in vitro, the molecular and biological association between isopsoralen and TGF-β signaling was examined. (CAGA) 12-luciferase-reporter gene was used to measure TGF-β1 signaling activity. Type I collagen was detected by semiquantitative reverse transcription polymerase chain reaction, and mothers against decapentaplegic homolog 7 (Smad7) protein expression levels were analyzed by western blotting. The expression of collagen in MC3T3-E1 cells stimulated with isopsoralen was significantly upregulated compared with the control groups (P<0.05). Conversely, isopsoralen significantly decreased Smad7 protein expression compared with the control groups (P<0.05). Moreover, it was observed that isopsoralen activates the TGF-β1 signaling pathway and ultimately promotes collagen synthesis through inhibition of Smad7 protein expression. Therefore, isopsoralen is a potential target for the treatment of PM-OP.
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Affiliation(s)
- Huicun Zhang
- Department of Combination of Traditional Chinese and Western Medicine, Beijing Hospital of Traditional Chinese Medicine, Capital University of Medical Sciences, Beijing 100010, P.R. China.,Department of Pathological and Physiological, Beijing Institute of Traditional Chinese Medicine, Beijing 100010, P.R. China
| | - Na Ta
- Department of Public Health and Risk, China National Health Development Research Center, Beijing 100019, P.R. China
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Faraji A, Abtahi S, Ghaderi A, Samsami Dehaghani A. Transforming Growth Factor β1 (TGF-β1) in the Sera of Postmenopausal Osteoporotic Females. Int J Endocrinol Metab 2016; 14:e36511. [PMID: 28123435 PMCID: PMC5237297 DOI: 10.5812/ijem.36511] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 09/26/2016] [Accepted: 10/16/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Postmenopausal osteoporosis is a major cause of morbidity in postmenopausal females. Transforming growth factor β1 (TGF-β1) and interleukin 18 (IL-18) play complex roles in normal bone metabolism, and in pathophysiology of postmenopausal osteoporosis. OBJECTIVES The aim of this study was to design an analytic cross sectional study in order to further clarify the role of TGF-β1 and IL-18 in osteoporosis of postmenopausal females. METHODS A cross sectional study including 65 postmenopausal osteoporotic females as cases and 69 postmenopausal females of similar age without osteoporosis as controls was conducted. Dual energy X-ray absorptiometry (DXA) was used to determine bone mass density (BMD) of participants and T-scoring was applied to establish whether the patient has osteoporosis or not. Serum TGF-β1 and IL-18 levels were measured by quantitative sandwich Enzyme linked immunosorbent assay (ELISA). RESULTS Serum TGF-β1 levels were significantly higher in osteoporotic postmenopausal females than non-osteoporotic individuals (23.8 vs. 15.8 ng/mL; P = 0.009). There was no difference between IL-18 levels in the sera of osteoporotic and non-osteoporotic postmenopausal females in this study. There was a positive correlation between body mass index (BMI) and serum level of TGF-β1 (P = 0.04). CONCLUSIONS Our study demonstrated that TGF-β1 serum levels is higher in osteoporotic postmenopausal females than non-osteoporotic ones, and probably aberrant increase in TGF-β1 in postmenopausal females can result in uncoupled bone resorption and formation, which leads to osteoporosis.
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Affiliation(s)
- Aazam Faraji
- Department of Obstetrics and Gynecology, School of Medicine, Shiraz, Iran
| | - Shabnam Abtahi
- Shiraz Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abbas Ghaderi
- Shiraz Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Alamtaj Samsami Dehaghani
- Department of Obstetrics and Gynecology, School of Medicine, Shiraz, Iran
- Corresponding author: Alamtaj Samsami Dehaghani, Department of Obstetrics and Gynecology, School of Medicine, Shiraz, Iran. E-mail:
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Chen L, Yang L, Yao M, Cui XJ, Xue CC, Wang YJ, Shu B. Biomechanical Characteristics of Osteoporotic Fracture Healing in Ovariectomized Rats: A Systematic Review. PLoS One 2016; 11:e0153120. [PMID: 27055104 PMCID: PMC4824477 DOI: 10.1371/journal.pone.0153120] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 03/23/2016] [Indexed: 11/19/2022] Open
Abstract
Biomechanical tests are widely used in animal studies on osteoporotic fracture healing. However, the biomechanical recovery process is still unknown, leading to difficulty in choosing time points for biomechanical tests and in correctly assessing osteoporotic fracture healing. To determine the biomechanical recovery process during osteoporotic fracture healing, studies on osteoporotic femur fracture healing with biomechanical tests in ovariectomized rat (OVX) models were collected from PUBMED, EMBASE, and Chinese databases. Quadratic curves of fracture healing time and maximum load were fitted with data from the analyzed studies. In the fitted curve for normal fractures, the predicted maximum load was 145.56 N, and the fracture healing time was 88.0 d. In the fitted curve for osteoporotic fractures, the predicted maximum load was 122.30 N, and the fracture healing time was 95.2 d. The maximum load of fractured femurs in OVX rats was also lower than that in sham rats at day 84 post-fracture (D84 PF). The fracture healing time was prolonged and maximum load at D84 PF decreased in OVX rats with closed fractures. The maximum load of Wister rats was higher than that of Sprague-Dawley (SD) rats, but the fracture healing time of SD and Wister rats was similar. Osteoporotic fracture healing was delayed in rats that were < = 12 weeks old when ovariectomized, and at D84 PF, the maximum load of rats < = 12 weeks old at ovariectomy was lower than that of rats >12 weeks old at ovariectomy. There was no significant difference in maximum load at D84 PF between rats with an osteoporosis modeling time <12 weeks and > = 12 weeks. In conclusion, fracture healing was delayed and biomechanical property decreased by osteoporosis. Time points around D95.2 PF should be considered for biomechanical tests of osteoporotic femur fracture healing in OVX rat models. Osteoporotic fracture healing in OVX rats was affected by the fracture type but not by the strain of the rat.
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Affiliation(s)
- Lin Chen
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Spine Research Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Long Yang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Spine Research Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Min Yao
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Spine Research Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xue-Jun Cui
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Spine Research Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chun-Chun Xue
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Spine Research Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yong-Jun Wang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Spine Research Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Bing Shu
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Spine Research Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- * E-mail:
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Abdu-Allah AM, Tarhouny SAE, Baghdadi HH. Serum amyloid a gene polymorphism and its association with lipid profile in Saudi females with osteoporosis. Pak J Med Sci 2015; 31:1124-9. [PMID: 26648999 PMCID: PMC4641268 DOI: 10.12669/pjms.315.7981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Background and Objective: Osteoporosis can be defined as a systemic skeletal disease characterized by low bone mass and micro architectural decline of bone tissue. Serum amyloid A (SAA) is a family of protein that increases up to 1,000-fold in blood during inflammation. In this study, we aimed to study the relationship between SAA1 gene polymorphism (rs12218) and lipid profile and osteoporosis. Methods: The study was performed on the female students of Taibah University in Al Medina, KSA during June 2014 to April 2015. According to BMD; osteoporosis group (138 students) and control group (128 students). All groups were subjected to; BMI, BMD, calcium, phosphorus, creatinine, lipid profile and SAA. Polymerase chain reaction and Real Time were done to determine the distribution of allele and genotype frequency of SAA (rs12218) C/T polymorphism. Results: This study shows that the TT genotype of rs12218 was more frequent in osteoporosis group than control group (P<0.001). Also, TT genotype and T allel was found to be associated with plasma total cholesterol, TG, LDLc, HDLc, Tscore, Zscore and SAA1 level in osteoporosis group (P=0.000, P=0.05, and P=0.000, P=0.000, P=0.01, P=0.02, P=0.000 respectively). The logistic regression analysis with and without lipid disorders in the osteoporosis group also show that the TT genotype of rs12218 still differed significantly between these two groups (P=0.001, OR=1.814, 95% CI: 0.719-4.577). Conclusion: The results of this study shows a significant association between TT genotype of rs12218 and both lipid level and osteoporosis in Saudi female population.
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Affiliation(s)
- Azza M Abdu-Allah
- Azza M. Abdu-Allah MD. Menofyia University, Egypt. Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Taibah University, Saudi Arabia
| | - Shereen A El Tarhouny
- Shereen A. El Tarhouny MD. Zagazig University, Egypt. Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Taibah University, Saudi Arabia
| | - Hussam Hussein Baghdadi
- Hussam Hussein Baghdadi, PhD. Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Taibah University, Saudi Arabia
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Ibrahim N'I, Mohamed N, Soelaiman IN, Shuid AN. The Effects of Targeted Deliveries of Lovastatin and Tocotrienol on Ossification-Related Gene Expressions in Fracture Healing in an Osteoporosis Rat Model. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:12958-76. [PMID: 26501302 PMCID: PMC4627010 DOI: 10.3390/ijerph121012958] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 10/01/2015] [Accepted: 10/08/2015] [Indexed: 12/26/2022]
Abstract
Osteoporotic drugs are used to prevent fragility fractures, but their role in fracture healing still remains unknown. Thus, alternative agents with suitable mode of delivery are needed to promote fracture healing. This study was performed to investigate the effects of direct deliveries of lovastatin and tocotrienol to fracture sites on ossification-related gene expression in fracture healing in a postmenopausal osteoporosis model. Forty-eight Sprague Dawley female rats were divided into six groups. Group I comprised the sham-operated rats, while Groups II–VI were ovariectomized rats. After 8 weeks, the right tibiae of all rats were fractured and stabilized. Group I and Group II were given two single injections of lovastatin and tocotrienol carriers. Group III was given an estrogen preparation at 64.5 µg/kg daily via oral gavages. Group IV was injected with lovastatin particles (750 µg/kg), while Group V was injected with tocotrienol particles (60 mg/kg). Group VI received two single injections of 750 µg/kg lovastatin particles and 60 mg/kg tocotrienol particles. After 4 weeks, the gene expressions were measured. Group VI showed significantly higher gene expressions of osteocalcin, BMP-2, VEGF-α, and RUNX-2 compared to Group II. In conclusion, combined treatment of lovastatin and tocotrienol upregulated the expression of genes related to fracture healing.
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Affiliation(s)
- Nurul 'Izzah Ibrahim
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Norazlina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Ima Nirwana Soelaiman
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Ahmad Nazrun Shuid
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
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Franco-Marquès E, Parra J, Pèlach MA, Méndez JA. Synthesis and characterization of self-curing hydrophilic bone cements for protein delivery. J Biomed Mater Res B Appl Biomater 2014; 103:992-1001. [PMID: 25209322 DOI: 10.1002/jbm.b.33283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/25/2014] [Accepted: 08/19/2014] [Indexed: 11/06/2022]
Abstract
New formulations of acrylic bone cements for bone defect reparation, based on self-hardening methyl methacrylate (MMA)/methacrylic acid (MAA), with a high capacity for protein delivery, have been developed. The self-curing formulations were prepared by partial substitution of solid phase PMMA microparticles by newly obtained PMAA microspheres. The PMAA microspheres were prepared by inverse suspension polymerization of their monomer and were cross-linked with N,N'-methylene-bis-acrylamide (MBA) (10-15 wt %) to produce stable systems in contact with aqueous media. PMAA microspheres were loaded with hydrolyzed collagen (HC) as a model protein to simulate bone morphogenetic protein delivery useful for hard tissue reconstruction. Solid phase PMMA microparticles in the formulation were partially substituted by new PMAA-HC microspheres and were characterized to determine viability as an acrylic bone cement in minimally invasive surgery. The incorporation of PMAA-HC microspheres decreased peak temperature by 20°C, which minimized thermal necrotic risk after implantation. Mechanical compression tests revealed a behavior, under dry conditions, close to ISO 5833 standard requirements. However, a drastic drop in mechanical strength, ∼64%, was obtained after 15 days of immersion in simulated physiological conditions (37°C and pH 7.4) and was attributed to water absorption and a subsequent plasticizing effect. The increase in water uptake and retention enhanced the capability for controlled protein delivery. Finally, the biocompatibility of the cements was determined; some toxicity of the material during the first hours of culture incubation was observed. Later, toxicity was observed to decrease due to nonreacted monomer leaching, which ensured the low toxicity of the already polymerized phase.
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Affiliation(s)
- E Franco-Marquès
- LEPAMAP Group, Universitat de Girona, Maria Aurèlia Capmany 61, 17071, Girona, Spain
| | - J Parra
- Unidad Asociada de I+D al CSIC de Investigación Clínica y Biopatología Experimental, Complejo Asistencial de Ávila (SACYL), Jesús del Gran Poder 42, 05003, Avila, Spain
| | - M A Pèlach
- LEPAMAP Group, Universitat de Girona, Maria Aurèlia Capmany 61, 17071, Girona, Spain
| | - J A Méndez
- LEPAMAP Group, Universitat de Girona, Maria Aurèlia Capmany 61, 17071, Girona, Spain
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Feng ZP, Li XY, Jiang R, Deng HC, Yang M, Zhou Q, Que WJ, Du J. Associations of SAA1 gene polymorphism with lipid lelvels and osteoporosis in Chinese women. Lipids Health Dis 2013; 12:39. [PMID: 23522429 PMCID: PMC3702468 DOI: 10.1186/1476-511x-12-39] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 03/15/2013] [Indexed: 12/30/2022] Open
Abstract
Background The development of osteoporosis is associated with several risk factors, such as genetic polymorphisms and enviromental factors. This study assessed the correlation between SAA1 gene rs12218 polymorphism and HDL-C lelvels and osteoporosis in a population of Chinese women. Methods A total of 387 postmenopausal female patients who were diagnosed with osteoporosis (case group) based on bone mineral density measurements via dual-energy x-ray absorptiometry and 307 females with no osteoporosis (control group) were included in this study. Correlations between SAA1 gene rs12218 polymorphism and osteoporosis and HDL-C level were investigated through the identification of SAA1 gene rs12218 polymorphism genotypes using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results The TT genotype of rs12218 was more frequently in osteoporosis patients than in control subjects (P <0.001). And the rs12218 was found to be associated with plasma TG, HDL-C, LDL-C, and BMD levels in osteoporosis patients (P<0.05). Conclusions The present results indicate that both osteoporosis and lipids levels are associated with the TT genotype of rs12218 in the human SAA1 gene.
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Affiliation(s)
- Zheng-Ping Feng
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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Jia J, Yao W, Amugongo S, Shahnazari M, Dai W, Lay YE, Olvera D, Zimmermann EA, Ritchie RO, Li CS, Alliston T, Lane NE. Prolonged alendronate treatment prevents the decline in serum TGF-β1 levels and reduces cortical bone strength in long-term estrogen deficiency rat model. Bone 2013; 52:424-32. [PMID: 23088940 PMCID: PMC3804116 DOI: 10.1016/j.bone.2012.10.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 10/14/2012] [Accepted: 10/15/2012] [Indexed: 12/18/2022]
Abstract
INTRODUCTION While the anti-resorptive effects of the bisphosphonates (BPs) are well documented, many questions remain about their mechanisms of action, particularly following long-term use. This study evaluated the effects of alendronate (Ale) treatment on TGF-β1 signaling in mesenchymal stem cells (MSCs) and osteocytes, and the relationship between prolonged alendronate treatment on systemic TGF-β1 levels and bone strength. METHODS TGF-β1 expression and signaling were evaluated in MSCs and osteocytic MLO-Y4 cells following Ale treatment. Serum total TGF-β1 levels, a bone resorption marker (DPD/Cr), three-dimensional microCT scans and biomechanical tests from both the trabecular and cortical bone were measured in ovariectomized rats that either received continuous Ale treatment for 360 days or Ale treatment for 120 days followed by 240 days of vehicle. Linear regression tests were performed to determine the association of serum total TGF-β1 levels and both the trabecular (vertebrae) and cortical (tibiae) bone strength. RESULTS Ale increased TGF-β1 signaling in the MSCs but not in the MLO-Y4 cells. Ale treatment increased serum TGF-β1 levels and the numbers of TGF-β1-positive osteocytes and periosteal cells in cortical bone. Serum TGF-β1 levels were not associated with vertebral maximum load and strength but was negatively associated with cortical bone maximum load and ultimate strength. CONCLUSIONS The increase of serum TGF-β1 levels during acute phase of estrogen deficiency is likely due to increased osteoclast-mediated release of matrix-derived latent TGF-β1. Long-term estrogen-deficiency generally results in a decline in serum TGF-β1 levels that are maintained by Ale treatment. Measuring serum total TGF-β1 levels may help to determine cortical bone quality following alendronate treatment.
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Affiliation(s)
- Junjing Jia
- Musculoskeletal Research Unit, Department of Medicine, University of California Davis Medical Center, Sacramento, CA 95817
| | - Wei Yao
- Musculoskeletal Research Unit, Department of Medicine, University of California Davis Medical Center, Sacramento, CA 95817
| | - Sarah Amugongo
- Musculoskeletal Research Unit, Department of Medicine, University of California Davis Medical Center, Sacramento, CA 95817
| | - Mohammad Shahnazari
- Musculoskeletal Research Unit, Department of Medicine, University of California Davis Medical Center, Sacramento, CA 95817
- Veterans Administration Medical Center, University of California, San Francisco, CA 94121
| | | | - Yuan E. Lay
- Musculoskeletal Research Unit, Department of Medicine, University of California Davis Medical Center, Sacramento, CA 95817
| | - Diana Olvera
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | | | - Robert O. Ritchie
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Department of Materials Science and Engineering, University of California, Berkeley, CA 94720
| | - Chin-Shang Li
- Division of Biostatistics, Department of Public Health Sciences, University of California, Davis, CA 95616
| | - Tamara Alliston
- Department of Orthopaedic Surgery, University of California, San Francisco, CA 94143
| | - Nancy E. Lane
- Musculoskeletal Research Unit, Department of Medicine, University of California Davis Medical Center, Sacramento, CA 95817
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Ozgen M, Cosan DT, Doganer F, Soyocak A, Armagan O, Gunes HV, Degirmenci I, Ozkara GO, Mutlu FS. Relationship between plasminogen activator inhibitor type-1 (PAI-1) gene polymorphisms and osteoporosis in Turkish women. Clinics (Sao Paulo) 2012; 67:1299-302. [PMID: 23184207 PMCID: PMC3488989 DOI: 10.6061/clinics/2012(11)13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 09/16/2012] [Accepted: 09/20/2012] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE The development of osteoporosis is associated with several risk factors, such as genetic structures that affect bone turnover and bone mass. The impact of genetic structures on osteoporosis is not known. Plasminogen activator inhibitor type-1 regulates the bone matrix and bone balance. This study assessed the correlation between plasminogen activator inhibitor type-1 gene 4G/5G polymorphisms and osteoporosis in a population of Turkish women. METHODS A total of 195 postmenopausal female patients who were diagnosed with osteoporosis (Group I) based on bone mineral density measurements via dual-energy x-ray absorptiometry and 90 females with no osteoporosis (Group II) were included in this study. Correlations between PAI-1 gene 4G/5G polymorphisms and osteoporosis were investigated through the identification of PAI-1 gene 4G/5G polymorphism genotypes using the polymerase chain reaction. RESULTS No significant differences in the genotype and allele frequency of 4G/5G plasminogen activator inhibitor type-1 polymorphisms were observed between the two groups, and both groups exhibited the most frequently observed 4G5G genotype. CONCLUSION No correlation between the development of osteoporosis in the female Turkish population and 4G/5G plasminogen activator inhibitor type-1 gene polymorphisms was observed.
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Affiliation(s)
- Merih Ozgen
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Eskişehir Osmangazi University, Eskisehir, Turkey
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Li H, Liang CZ, Tao YQ, Shen CC, Chen QX. Elevated local TGF-β1 level predisposes a closed bone fracture to tuberculosis infection. Med Hypotheses 2012; 79:400-2. [PMID: 22738905 DOI: 10.1016/j.mehy.2012.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2012] [Revised: 05/26/2012] [Accepted: 06/03/2012] [Indexed: 02/06/2023]
Abstract
Tuberculosis (TB) occurring after a closed bone fracture in the patient with no history of TB and no evidence of TB infection at the time of initial fracture is a rare entity. Transforming growth factor-beta 1 (TGF-β1) is a ubiquitous growth factor that is implicated in the regulation of the proliferation, differentiation, migration, and survival of many different cell types. Recent studies have demonstrated that the local level of TGF-β1 in bone is significantly elevated during fracture healing and TGF-β1 plays an important role in TB progression. Given the above background, we hypothesize that elevated local TGF-β1 level predisposes a closed bone fracture to TB infection. This was supported by conclusions drawn from literature reviews: (1) the local level of TGF-β1 in bone is significantly elevated during fracture healing; (2) TGF-β1 inhibits T lymphocyte activation; (3) TGF-β1 is a potent macrophage-deactivating molecule; (4) TGF-β1 suppresses the production and activity of some proinflammatory cytokines.
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Affiliation(s)
- Hao Li
- Department of Orthopaedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jiefang Road, Hangzhou 310009, PR China
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