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Zang FL, Yang B, Zhang YH, Guo YH, Wang YL, Ding TT. [Intrahepatic adrenocortical oncocytic adenoma arising from ectopic adrenal: report of a case]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2022; 51:782-784. [PMID: 35922177 DOI: 10.3760/cma.j.cn112151-20211203-00886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
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Wen S, Ye L, Wang X, Liu D, Yang B, Man M. 398 Comparison of epidermal gene expression profiles in mice aged 1 to 20 months. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Feng XY, Zhang P, Nie H, Ji G, Yang B, Feng F, Wang SQ, Ma YM, Jiang K, Zhao QC. [A cognitive and attitude survey of the implementation of enhanced recovery after surgery in gastrointestinal surgery in China]. ZHONGHUA WEI CHANG WAI KE ZA ZHI = CHINESE JOURNAL OF GASTROINTESTINAL SURGERY 2022; 25:621-624. [PMID: 35844125 DOI: 10.3760/cma.j.cn441530-20220413-00145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
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Black J, Cox M, Chung W, Lowe M, Barber J, Dennison AR, Bagul A, Yang B. O083 A proof of principle study of cell targeted delivery of sirna guided by innate repair receptor epor/βcr highly expressed by injured tubular epithelial cells in porcine kidneys subjected to extended cold ischaemia times. Br J Surg 2022. [DOI: 10.1093/bjs/znac242.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Abstract
Introduction
Small interfering RNA (siRNA) has been used in biological models for disease modification. Whilst challenges remain with targeted cell delivery, caspase-3, an executing enzyme of apoptosis and inflammation, plays a crucial role in acute kidney injury. Using caspase-3 siRNA or erythropoietin derived peptide CHBP, we have demonstrated renoprotection against ischaemia-reperfusion injury in isolated kidney preservation, and further applied the conjugate of both.
Methods
Porcine kidneys (n = 3) subjected to 10 minutes of warm ischemia were retrieved and perfused with 500 mL hyperosmolar citrate. In comparison with the control (Kidney 1) caspase-3 siRNAHBSP (Kidney 2) or CHBP (Kidney 3) conjugate was administered into the kidney and autologous blood and stored for 22 hours in ice. Organs were then preserved by normothermic perfusion (NP) for 3 hours using clinical-grade cardiopulmonary bypass. Functional parameters were recorded, and kidney biopsies were taken at time zero (pre-perfusion) and hourly intervals following NP.
Results
Preliminary findings showed increased arterial flow rate and urine output together with neutralised perfusate pH in the kidneys (2 and 3) receiving both conjugates compared to the control.
Conclusion
Improved physiological outcomes in kidneys subjected to the novel agent treatment suggest protective effects against ischaemia. We hypothesise outcomes should be transferrable to human kidneys, which may facilitate the use of marginal kidneys following prolonged ischaemia, otherwise deemed unsuitable for transplantation. Renal histological and molecular studies of the effect of the agent are underway.
Take-home message
Despite a small sample, this pilot proof of principle study suggests that caspase-3 inhibitors may have a role in limiting the detrimental effects of ischaemia on renal tissues subjected to prolonged cold ischaemic times. It is hoped that this may be beneficial if replicated in the human kidney model at increasing the deceased donor organ pool by enabling use of marginal kidneys subjected to prolonged ischaemic times.
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Burris N, Nguyen C, Deeb G, Yang B, Patel H, Kim K, Fukuhara S. 447 Early Experience With Ct Evaluation Of Valve Incorporation Prior To Tavr Explant. J Cardiovasc Comput Tomogr 2022. [DOI: 10.1016/j.jcct.2022.06.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang S, Xu C, Yang B, Yan D. NOMOGRAM COMBINING PREOPERATIVE ULTRASONOGRAPHY WITH CLINICAL FEATURES FOR PREDICTING LYMPH NODES POSTERIOR TO THE RIGHT RECURRENT LARYNGEAL NERVE METASTASIS IN PATIENTS WITH PAPILLARY THYROID CANCER. ACTA ENDOCRINOLOGICA (BUCHAREST, ROMANIA : 2005) 2022; 18:333-342. [PMID: 36699168 PMCID: PMC9867817 DOI: 10.4183/aeb.2022.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Aim To establish a nomogram combining preoperative ultrasonic and clinical features for predicting lymph nodes posterior to the right recurrent laryngeal nerve (LN-prRLN) metastasis in papillary thyroid carcinoma (PTC) patients. Methods Preoperative ultrasonic and clinical variables of patients with PTC from 2014 to 2021 were retrospectively analyzed. The risk factors associated with LN-prRLN metastasis were identified and validated through a developed nomogram model based on univariate and multivariate logistic regression analysis. Results A total of 615 patients (690 lesions) were enrolled for the training dataset and 207 patients (226 lesions) for the validation dataset with 54 (6.57%) patients developing LN-prRLN metastasis. Multivariate logistic regression analysis demonstrated that the preoperative ultrasound measurement of larger tumors (≥20 mm), higher TI-RADS category (category 5), and higher thyroglobulin level (9.86 ng/mL) in patients with PTC were predictive factors for LN-prRLN metastasis. The nomogram model was established and verified yielding a relatively good predictive performance in the training and validation dataset (AUC: 0.868 vs. 0.851). Conclusions The nomogram combining preoperative ultrasonography with clinical features in this study is highly predictive of LN-prRLN metastasis in patients with PTC, which may provide more personalized recommendations for clinicians in preoperative decision-making for complete dissection of LN-prRLN.
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Xiong ZW, Yang B, Zhao YX, Ning RX, Wang B, Lu M, Zeng JQ, Ma WK, Jia XB, Feng L. A new direct compression mechanism of structural transition in Poria cocos extract composite particles. Int J Pharm 2022; 623:121913. [PMID: 35710073 DOI: 10.1016/j.ijpharm.2022.121913] [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: 04/06/2022] [Revised: 05/26/2022] [Accepted: 06/09/2022] [Indexed: 10/18/2022]
Abstract
The structural transition to generate amorphous translucent grains in Poria cocos dry extract (PCE) composite particles was found and studied as a new direct compression mechanism. The pressure and displacement sensing techniques were used to obtained stress-strain profiles during compression. The Exponential function, Kawakita model, Shapiro model and Heckel model were used to analysis mechanical properties of powders. 12 parameters derived from compression models and powder physical properties were applied to partial least squares method (PLS) for analyzing powder compression mechanism. It was found that only the oven-dried PCE composite particles undergoes the structural transition and generate translucent grains scattered and embedded in tablet, and these tablets have excellent mechanical stability. The structural transition in plant dry extract as the PCE composite particles could be exploited to improve powder compression and tabletability.
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Blyszczuk P, Kania G, Pachera E, Rolski F, Hukara A, Tela V, Mayo M, Dixit V, Yang B, Gollob J, Mainolfi N, Slavin A, Hubeau C, Distler O. POS0479 STAT3 DEGRADERS PROTECT FROM IMMUNOFIBROTIC CHANGES IN PRECLINICAL MODELS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundThe ubiquitin-proteasome system (UPS) is the endogenous intracellular mechanism for maintaining protein homeostasis through protein degradation and turnover. Heterobifunctional small molecules are a new class of compounds that form a ternary complex with an E3 ligase and protein of interest leading to ubiquitination and subsequent degradation of the protein of interest in a process known as Targeted Protein Degradation. This new therapeutic modality enables targeting of “undruggable” proteins such as STAT3, a transcription factor activated in immunofibrotic diseases.ObjectivesKymera has developed heterobifunctional molecules that potently and selectively target STAT3 for degradation and elimination by the ubiquitin-proteasome pathway. The aim of these studies was to evaluate the therapeutic potential of pharmacologically removing STAT3 by targeted protein degradation in various human cell types in vitro, and to prevent the development of skin and lung fibrosis in vivo.MethodsDermal fibroblasts obtained from healthy and systemic sclerosis patients activated with TGF-β were analyzed for development of α-smooth muscle actin (α-SMA)-positive stress fibers and for contractility using collagen gel contraction assay. Contraction assay was also performed using human dermal smooth muscle cells. Human aortic endothelial cells (HAECs) were activated with LPS, and their adhesive properties were assessed in the microcapillary system by the ability to bind peripheral blood mononuclear cells (PBMCs) under shear stress. HAECs proliferation was induced with VEGF. THP-1 cells and CD14+ monocytes were activated with IL-6 or LPS, and secreted cytokines were assessed by CBA. PBMCs activated with LPS, IL-6, IL-21, or IL-23 alone (pSTAT3 induction), or with a combination of anti-CD3/CD38 beads and a pro-Th17 cocktail comprised of cytokines and antibodies to evaluate the development of a Th17 and Treg phenotype by flow cytometry. Cytokines were analyzed by ELISA. All cell types were pre-treated with STAT3 degraders 20h prior to experiment start. Intratracheal instillation of bleomycin was used to induce pulmonary fibrosis. Transgenic Tsk-1 mice were used as a model of spontaneous skin fibrosis.ResultsSTAT3 degraders completely ablated STAT3 in all analyzed cell types with DC50 ranging from 0.25-0.8 nM. STAT3 degradation prevented TGF-β-induced formation of α-SMA-positive stress fibers in dermal fibroblasts (IC50 = 0.35nM) and 2 and 10nM degrader completely abrogated their contractility. Similarly, STAT3 degradation reduced the constitutive contractility of dermal smooth muscle cells of 13% (p<0.05, n=6). Treatment of HAECs with STAT3 degraders resulted in anti-adhesive 178±21 for LPS and 93±12 for LPS +degrader, p<0.05, n=6) and anti-proliferative 1.2±0.1 for VEGF and 0.95±0.1 for VEGF +degrader, p<0.05, n=10-11) effects. In monocyte-focused assays (CD14+ monocytes and THP-1 cells), STAT3 degradation potently and dose-dependently inhibited IL-6 and LPS-induced pSTAT3 levels and the ensuing release of MCP-1/CCL2 (24.3±3.7 for LPS and 20.2±3.2 for LPS +degrader, p<0.05, n=6). In CD4+ T lymphocytes, STAT3 degradation promoted a Treg phenotype and suppressed the development of Th17 cells. Systemic treatment in vivo showed that prophylactic STAT3 degradation (7 mg/kg twice a week, i.p.) reduced disease severity in the bleomycin-induced pulmonary fibrosis model (Ashcroft‘s score, 4.7±1.9 vs. 3.1±1.6, p<0.05, n=11). In Tsk-1 mice that show co-occurrence of spontaneous skin thickening and robust STAT3 activation, STAT3 degrader treatment (2 or 7 mg/kg twice a week, i.p.) for 7 weeks significantly reduced thickness of the skin (701±238 vs. 480±205 vs. 365±107, p<0.05, n=6-8).ConclusionSTAT3 degraders that selectively and potently eliminate STAT3 show robust anti-inflammatory and anti-fibrotic potential in vitro and in vivo. Our results suggest that targeted protein degradation is a promising approach to modulate the STAT3 pathway, making it a novel therapeutic opportunity to treating multiple immunofibrotic diseases.Disclosure of InterestsPrzemyslaw Blyszczuk Grant/research support from: Kymera, Gabriela Kania: None declared, Elena Pachera: None declared, Filip Rolski: None declared, Amela Hukara: None declared, Vanessa Tela: None declared, Michele Mayo Employee of: Kymera, Vaishali Dixit Employee of: Kymera, Bin Yang Employee of: Kymera, Jared Gollob Employee of: Kymera, Nello Mainolfi Employee of: Kymera, Anthony Slavin Employee of: Kymera, Cedric Hubeau Employee of: Kymera, Oliver Distler Speakers bureau: Bayer, Boehringer Ingelheim, Janssen, Medscape, Consultant of: Abbvie, Acceleron, Alcimed, Amgen, AnaMar, Arxx, AstraZeneca, Baecon, Blade, Bayer, Boehringer Ingelheim, Corbus, CSL Behring, 4P Science, Galapagos, Glenmark, Horizon, Inventiva, Kymera, Lupin, Miltenyi Biotec, Mitsubishi Tanabe, MSD, Novartis, Prometheus, Roivant, Sanofi and Topadur, Grant/research support from: Kymera, Mitsubishi Tanabe, Boehringer Ingelheim.
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Hubeau C, Sullivan J, Brown C, Mayo M, Dixit V, Enerson B, Rong H, Yang B, De Savi C, Gollob J, Mainolfi N, Slavin A. OP0080 STAT3 DEGRADERS INHIBIT Th17 DEVELOPMENT AND CYTOKINE PRODUCTION RESULTING IN PROFOUND INHIBITION OF COLLAGEN-INDUCED AUTOIMMUNE MURINE ARTHRITIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundSignal transducer and activator of transcription 3 (STAT3) is a transcription factor that belongs to a class of targets devoid of catalytic function, thus deemed “undruggable” by standard modalities such as small molecule inhibitors or biologics. STAT3 can be activated by various receptor- and non-receptor tyrosine kinases, playing a critical role in activation pathways triggered by cytokines, hormones, and growth factors, making it an attractive target for the treatment of inflammatory diseases.ObjectivesKymera has developed heterobifunctional molecules that selectively target STAT3 for degradation and elimination by the ubiquitin-proteasome pathway. We sought to evaluate the pharmacologic potential of these STAT3 degraders through in vitro and in vivo studies relevant to human autoimmune disease, including murine collagen-induced arthritis.MethodsWe evaluated the impact of STAT3 degraders on the activation of human monocytes, dermal fibroblasts, CD4+ T cells, and PBMC by LPS, IL-6/IL-6R, IL-21, IL-23, as well as anti-CD3/CD28 plus a cocktail of cytokines and antibodies. STAT3 degradation and pSTAT3 inhibition were determined in comparison to a JAK1/2 small molecule inhibitor. Inhibition of cytokines, chemokines, and collagen release, as well as Th17 (CD4+CD25-RORγt+CXCR6+) and Treg (CD4+CD25+CD127lowFOXP3+) expansion were used as in vitro efficacy assays. Finally, STAT3 degraders were tested in vivo, in a mechanistic (IL-6 challenge) as well as a disease model (murine CIA) relevant to rheumatology indications.ResultsSTAT3 degraders showed broad and potent activity in-vitro against TLR receptor and cytokine-induced activation of immune and stromal cells, including soluble mediator release such as MCP-1/CCL2 and Collagen1a1. STAT3 degradation in CD4+ T cells robustly inhibited the development of Th17 cells, abrogating IL-17, IL-22, IL-8/CXCL8, and TNFα production, and increased Treg numbers in a manner superior to JAK1/2 inhibition. In mice injected with IL-6, plasma levels of serum amyloid A were dose-dependently suppressed by STAT3 degradation. In the murine collagen-induced arthritis model, STAT3 degradation resulted in robust, dose-dependent delay of disease onset and decreased disease incidence, clinical scores, local cytokine expression (paws) and histopathological scores, including the complete alleviation of periosteal bone growth.ConclusionThese data demonstrate the broad activity of STAT3 degradation in alleviating autoimmune inflammation in models relevant to human disease. Targeted protein degradation of STAT3 thus represents a novel therapeutic approach to treating autoimmune/autoinflammatory diseases such as rheumatoid arthritis.Disclosure of InterestsCedric Hubeau Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Jeffrey Sullivan Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Crystal Brown Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Michele Mayo Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Vaishali Dixit Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Bradley Enerson Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Haojing Rong Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Bin Yang Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Chris De Savi Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Jared Gollob Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Nello Mainolfi Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics, Anthony Slavin Shareholder of: Kymera Therapeutics, Employee of: Kymera Therapeutics.
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Bai H, Guo Q, Yang B, Dong Z, Li X, Song Q, Jiang Y, Wang Z, Chang G, Chen G. Effects of residual feed intake divergence on growth performance, carcass traits, meat quality, and blood biochemical parameters in small-sized meat ducks. Poult Sci 2022; 101:101990. [PMID: 35841639 PMCID: PMC9289854 DOI: 10.1016/j.psj.2022.101990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/10/2022] [Accepted: 05/29/2022] [Indexed: 11/28/2022] Open
Abstract
Feed efficiency (FE) is a major economic trait of meat duck. This study aimed to evaluate the effects of residual feed intake (RFI) divergence on growth performance, carcass traits, meat quality, and blood biochemical parameters in small-sized meat ducks. A total of 500 healthy 21-day-old male ducks were housed in individual cages until slaughter at 63 d of age. The growth performance was determined for all the ducks. The carcass yield, meat quality, and blood biochemical parameters were determined for the selected 30 high-RFI (HRFI) and 30 low-RFI (LRFI) ducks. In terms of growth performance, the RFI, feed conversion ratio (FCR), and average daily feed intake (ADFI) were found to be significantly lower in the LRFI group (P < 0.01), whereas no differences were observed in the BW and body weight gain (P > 0.05). For slaughter performance, no differences were observed in the carcass traits between the LRFI and HRFI groups (P > 0.05). For meat quality, the shear force of breast muscle was significantly lower in the LRFI group (P < 0.05), while the other meat quality traits of breast and thigh muscles demonstrated no differences (P > 0.05). For blood biochemical parameters, the serum concentrations of triglycerides (TG) and glucose (GLU) were significantly lower in the LRFI group (P < 0.05), while the other parameters showed no differences (P > 0.05). The correlation analysis demonstrated a high positive correlation between RFI, FCR, and ADFI (P < 0.01). The RFI demonstrated a negative effect on the breast muscle and lean meat yields, but a positive effect on the shear force of breast muscle (P < 0.05). Further, the RFI demonstrated a positive effect on the TG and GLU levels (P < 0.05). These results indicate that the selection for low RFI could improve the FE of small-sized meat ducks without affecting the production performance. This study provides valuable insight into the biological processes underlying the variations in FE in small-sized meat ducks.
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Palasi S, Howell S, Green T, Kannady C, Slaughter K, Wang R, Yang B. Does knowing pre-operative penile length influence patient satisfaction post penile prosthesis surgery. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Howell S, Palasi S, Green T, Kannady C, Slaughter K, Wang R, Yang B. Comparing patient satisfaction in penile prosthesis surgery after radical prostatectomy versus the general population. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ran Q, Zhou X, Sun YZ, Zhao X, Liu ZC, Liu X, Qu C, Zhang C, Liang JJ, Yang B, Shi S. [Comparison on the clinical characteristics of patients with Takotsubo syndrome from China and from Europe/North America]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 2022; 50:386-394. [PMID: 35399035 DOI: 10.3760/cma.j.cn112148-20220304-00152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To summarize the clinical characteristics of patients with Takotsubo syndrome (TTS) from China and compare these features with patients from Europe/North America. Methods: We reviewed case reports published between 1990 and 2020 with the key words of "Takotsubo syndrome" "stress cardiomyopathy" "apical balloon syndrome" and "broken heart syndrome", in Wanfang, CNKI, Pubmed and Web of Science databases, and 1 294 articles were identified, including 128 articles reporting 163 cases in China and 1 166 articles reporting 1 256 cases in Europe/North America. The characteristics of demographics, triggers, symptoms, electrocardiogram, echocardiography, left ventriculogram,coronary angiography, treatment and prognosis were analyzed and compared between Chinese and European/North American cases. Results: A total of 1 294 articles (1 419 cases: 163 from China, 1 256 from Europe/North America) were included in the final analysis. The characteristics of Chinese cases included: (1) demographic:the age was (59.6±16.9) years, which was similar with that of European/North American ((59.7±17.4) years, P=0.90), and female accounting for 78.5% (128/163), which was lower than that of European/North American (85.4% (1 073/1 256), P=0.02). (2) Triggers:mental triggers accounted for 48.5% (79/163), physical triggers accounted for 43.6% (71/163), and no triggers accounted for 7.9% (13/163), respectively. Compared with Europe/North America, the ratio of patients with mental triggers was higher in China, while the ratio of patients with physical triggers and no triggers was lower (P<0.05). (3) Symptoms: chest pain (52.8% (86/163)), chest tightness (35.0% (57/163)), shortness of breath (33.1% (54/163)), dizziness (16.0% (26/163)), sweating (15.3% (25/163)), palpitations (12.3% (20/163)), syncope (9.2% (15/163)) abdominal pain/diarrhea (8.6% (14/163)), hypotension (7.4% (12/163)), and fatigue (1.2% (2/163)) were illustrated in sequence. Compared with patients in Europe/North America, the ratio of patients with chest tightness, dizziness, sweating, palpitations, abdominal pain/diarrhea was higher in Chinese patients, while the ratio of patients with hypotension was lower in Chinese patients (P<0.05). (4) Electrocardiogram: main manifestations were myocardial ischemia symptoms, such as ST-segment elevation (63.8% (104/163)), T wave inversion (46.0% (75/163)), ST-segment depression (8.6% (14/163)). Compared with European/North American, the ratio of patients with ST-segment elevation, T wave inversion, and atrioventricular block was higher in Chinese patients (P<0.05). (5) Echocardiography and imaging:apical dyskinesia (59.5% (97/163)) and apical/left ventricular bulbar dilation (36.2%(59/163)) dominated the echocardiography findings. Compared with European/North American, the ratio of patients with apical dyskinesia, apical/left ventricular bulbar dilation, and mitral regurgitation was higher in Chinese patients, while the ratio of patients with dyskinesia in other parts and left ventricular ejection fraction<50% was lower in Chinese patients (P<0.05). Left ventricular angiography showed 36.2% (59/163) of apical dyskinesia in Chinese patients, which was higher than that reported in European/North American patients, and 38.7% (63/163) of apical/left ventricular bulbar dilation was reported in Chinese patients, which was similar to that reported in European/North American patients. Coronary angiography showed percent of no stenosis or stenosis less than 50% was 87.1% (142/163), which was similar to that reported in European/North American patients (P>0.05). The typical type of TTS accounted for 96.3% (157/163), which was significantly higher than that reported in European/ American patients, while the ratio of basal type and midventricular type was lower (P<0.01). (6) Treatment and prognosis:the applied drugs in China were listed in order as following, β-blockers (41.1% (67/163)), antiplatelet agents (37.4%(61/163)), ACEI/ARB (36.2%(59/163)), anticoagulants (27.0%(44/163)), diuretics (19.6% (32/163)), etc. Compared with Europe/North America, the ratio of antiplatelet agents, anticoagulants, statins, diuretics, and nitrates use was higher in China (P<0.05), while the use of oxygen therapy and IABP was similar (P>0.05). The hospital mortality in China was 5.5% (9/163), during 1-year follow-up the recurrence rate was 3.7% (6/163) and the mortality was 0. The prognosis was similar with that in Europe/North America. Conclusions: Compared with TTS cases in Europe/North America, TTS cases in China also occur usually in middle-aged and elderly women, most of whom have mental/physical triggers and typical imaging manifestations, followed by a low hospital mortality rate and recurrence rate.
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Ye L, Wang Z, Kim Y, Elias PM, Li T, Wen S, Song J, Lv C, Yang B, Man MQ. A Topical Emollient Mitigates the Progression of Cognitive Impairment in the Elderly: A Randomized, Open-Label Pilot Trial. J Eur Acad Dermatol Venereol 2022; 36:1382-1388. [PMID: 35442543 DOI: 10.1111/jdv.18162] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/21/2022] [Accepted: 03/24/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Cognitive impairment is common in the elderly. Prior studies suggest a link between chronic inflammation and cognitive dysfunction, while aging-associated epidermal dysfunction has been connected to elevations in circulating cytokines. OBJECTIVE We assessed here whether improvements in epidermal function can mitigate the progression of cognitive impairment. METHODS This randomized, open-label pilot trial was carried out in two cities in northern China. A total of 200 participants aged ≥65 years were randomly assigned to the emollient-treated and untreated groups at 1:1 ratio. Participants in the treated group were treated topically with Atopalm cream® twice-daily from November to the following May each year for three consecutive years, while the untreated subjects served as controls. The Global Deterioration Scale (GDS) was used to assess the severity of cognitive impairment, while epidermal biophysical properties were measured on the forearms and the shins in parallel. RESULTS Over the three-year trial, GDS significantly increased from baseline (p<0.0001) in the controls, while in the treated group, GDS stabilized. While stratum corneum hydration on the forearms did not change significantly in the controls, transepidermal water loss rates (TEWL), significantly increased by the end of the trial compared to baselines in the controls (p<0.0001). On the forearms of the treated group, stratum corneum hydration increased (p<0.0001) while skin surface pH decreased from baseline (p<0.0001). CONCLUSIONS These results suggest that improvements in epidermal function with topical emollient can mitigate the progression of cognitive impairment. However, the sample size was relatively small, and trials in a larger cohort are needed to validate the present results.
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Park HL, Yang B, Shin JE, Kim JY, Shin JY, Shin E, Noh S, Kim JH. Additional Excision Biopsy in Patients With Atypical Ductal Hyperplasia at Ultrasound-guided Vacuum-assisted Breast Biopsy. Anticancer Res 2022; 42:2159-2165. [PMID: 35347040 DOI: 10.21873/anticanres.15698] [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: 01/26/2022] [Revised: 02/26/2022] [Accepted: 02/28/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM We conducted this single-center, retrospective study to identify predictors of upgrading to malignancy and to discuss the necessity of additional excision biopsy in patients who were diagnosed with atypical ductal hyperplasia (ADH) at ultrasound (US)-guided vacuum-assisted breast biopsy (VABB) based on our 18-year, single-center experience. PATIENTS AND METHODS The current study was conducted in a total of 12,160 patients who were evaluated at our medical institution during an 18-year period between January of 2003 and December of 2020. We included the patients who were diagnosed with ADH at US-guided VABB using the Mammotome® (Devicor Medical Products, Inc., Cincinnati, OH, USA). We therefore included a total of 114 patients (n=114) with ADH in the current study. RESULTS Of 114 eligible patients, 36 underwent additional excision biopsy and the remaining 78 did not. Of these 36 patients, 15 were found to have an upgrading to malignancy at a rate of upgrading of 41.7%. These include 7 cases (46.6%) of low-grade ductal carcinoma in situ (DCIS), 3 cases (20.0%) of intermediate grade DCIS, 1 case (6.7%) of microinvasive DCIS, 3 cases (20.0%) of multifocal lobular carcinoma in situ, and 1 case (6.7%) of mucinous carcinoma. Finally, only suspicious microcalcification on mammography was a significant predictor of upgrading to malignancy (p=0.023). CONCLUSION An additional excision biopsy is recommended to reduce the rate of upgrading to malignancy in patients who were diagnosed with ADH through a US-guided VABB.
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Jiang WY, Lei QY, Liu SS, Yang L, Yang B, Zhang Y. [The effect of HOXC10 gene on biological behaviors of glioma cells and mechanism in tumor microenvironment]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2022; 44:228-237. [PMID: 35316872 DOI: 10.3760/cma.j.cn112152-20200326-00266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the effects of Homeobox C10 (HOXC10) on biological characteristics such as migration, invasion and proliferation of glioma cancer cells and to explore the role of HOXC10 gene in glioma microenvironment. Methods: The expression level of HOXC10 in high grade glioma (glioblastoma) and low grade glioma and its effect on patient survival were analyzed by using The Cancer Genome Atlas (TCGA) and Chinese Glioma Genome Atlas (CGGA) database. Hoxc10-siRNA-1, HOXC10-siRNA-2 and siRNA negative control (NC) were transfected into U251 cells according to the operation instructions of HOXC10-siRNA transfection. 100 ng/ mL recombinant protein chemokine ligand 2 (reCCL2) was added into the transfection group, and was labeled as HOXC10-siRNA-1+ reCCL2 and HOXC10-siRNA-2+ reCCL2 groups. The expressions of HOXC10 mRNA and target protein in each group was detected by real-time fluorescence quantitative polymerase chain reaction (qRT-PCR) and western blot. The proliferation ability of cells in each group was detected by cell counting kit 8 (CCK8) method. The migration ability of cells was detected by Transwell assay and Nick assay, and cell apoptosis was detected by flow cytometry. The expression of chemokines in each group was detected by multiple factors. Co-incubation assays were performed to determine the role of HOXC10 and chemokine ligand 2 (CCL2) in recruiting and polarizing tumor-associated macrophages (M2-type macrophages). Results: The median expression level of HOXC10 in high grade gliomas was 8.51, higher than 1.00 in low grade gliomas (P<0.001) in TCGA database. The median expression level of HOXC10 in high grade gliomas was 0.83, higher than 0.00 in low grade gliomas (P=0.002) in CGGA database. The 5-year survival rate of patients with high HOXC10 expression in TCGA database was 28.2%, lower than 78.7% of those with low HOXC10 expression (P<0.001), and the 5-year survival rate of patients with high HOXC10 expression in CGGA database was 20.3%, lower than 58.0% of those with low HOXC10 expression (P<0.001). The numbers of cell migration in HOXC10-siRNA-1 group and HOXC10-siRNA-2 group were (45±3) and (69±4) respectively, lower than (159±3) in NC group (P<0.05). The cell mobility of HOXC10-siRNA-1 group and HOXC10-siRNA-2 group at 48 hours were (15±2)% and (28±4)% respectively, lower than (80±5)% of NC group (P<0.05). The expressions of vimentin in HOXC10-siRNA-1 group and HOXC10-siRNA-2 group were (141 740.00±34 024.56) and (94 655.00±5 687.97), N-cadherin were (76 810.00±14.14) and (94 254.00±701.45), β-catenin were (75 786.50±789.84) and (107 296.50±9 614.53), lower than (233 768.50±34 114.37), (237 154.50±24 715.50) and (192 449.50±24 178.10) of NC group (P<0.05). The A value of HOXC10-siRNA-1 group and HOXC10-siRNA-2 group were (0.44±0.05) and (0.32±0.02) at 96 hours, lower than 0.92±0.12 of NC group (P<0.05). The apoptosis rates of HOXC10-siRNA-1 group and HOXC10 siRNA-2 group were (10.23±1.24)% and (13.81±2.16)%, higher than (4.60±0.07)% of NC group (P<0.05). The expression levels of CCL2 in U251 cells in HOXC10-siRNA-1 and HOXC10-siRNA-2 groups were (271.63±44.27) and (371.66±50.21), lower than (933.93±29.84) in NC group (P<0.05). The expression levels of CCL5 (234.81±5.95 and 232.62±5.72), CXCL10 (544.13±48.14 and 500.87±15.65) and CXCL11 (215.75±15.30 and 176.18±16.49) in HOXC10-siRNA-1 and HOXC10-siRNA-2 groups were higher than those in NC group (9.98±0.71, 470.54±18.84 and 13.55±0.73, respectively, P<0.05). The recruited numbers of CD14(+) THP1 in HOXC10-siRNA-1 and HOXC10-siRNA-2 groups were (159.33±1.15) and (170.67±1.15), respectively, lower than (360.00±7.81) in NC group (P<0.05), while addition of reCCL2 promoted the recruitment of CD14(+) THP1 cells (287.00±3.61 and 280.67±2.31 in HOXC10-siRNA-1+ reCCL2 group and HOXC10-siRNA-2+ reCCL2 group, respectively, P<0.05). The expressions level of M2-type macrophage-related gene TGF-β in HOXC10-siRNA-1 group and HOXC10-siRNA-2 group were (0.30±0.02) and (0.28±0.02), respectively, lower than (1.06±0.10) in NC group (P<0.05). The expressions level of M1-related gene NOS2 in HOXC10-siRNA-1 and HOXC10-siRNA-2 were (11 413.95±1 911.85) and (5 894.00±945.21), respectively, higher than (13.39±4.32) in NC group (P<0.05). Conclusions: The expression of HOXC10 in glioma is high and positively correlated with the poor prognosis of glioma patients. Knockdown of HOXC10 can inhibit the proliferation, migration and metastasis of human glioma U251 cells. HOXC10 may play an immunosuppressive role in glioma microenvironment by promoting the expression of CCL2 and recruiting and polarizing tumor-associated macrophages (M2 macrophages).
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Liu S, Chen H, Wang C, Xu Q, Feng S, Wang Y, Yao J, Zhou Q, Tong C, Yang B, Chen J, Jiang H. POS-340 MAPK1 MEDIATES HIGH GLUCOSE INDUCED RENAL TUBULAR INJURY THROUGH DISRUPTING THE INTEGRITY OF MAM. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Cui X, Wang S, Jiang N, Li Z, Li X, Jin M, Yang B, Jia N, Hu G, Liu Y, He Y, Liu Y, Zhao S, Yu Q. Establishment of prediction models for COVID-19 patients in different age groups based on Random Forest algorithm. QJM 2022; 114:795-801. [PMID: 34668535 DOI: 10.1093/qjmed/hcab268] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 09/21/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Coronavirus disease 2019 (COVID-19) has rapidly become a global pandemic. Age is an independent factor in death from the disease, and predictive models to stratify patients according to their mortality risk are needed. AIM To compare the laboratory parameters of the younger (≤70) and the elderly (>70) groups, and develop death prediction models for the two groups according to age stratification. DESIGN A retrospective, single-center observational study. METHODS This study included 437 hospitalized patients with laboratory-confirmed COVID-19 from Tongji Hospital in Wuhan, China, 2020. Epidemiological information, laboratory data and outcomes were extracted from electronic medical records and compared between elderly patients and younger patients. First, recursive feature elimination (RFE) was used to select the optimal subset. Then, two random forest (RF) algorithms models were built to predict the prognoses of COVID-19 patients and identify the optimal diagnostic predictors for patients' clinical prognoses. RESULTS Comparisons of the laboratory data of the two age groups revealed many different laboratory indicators. RFE was used to select the optimal subset for analysis, from which 11 variables were screened out for the two groups. The RF algorithm were built to predict the prognoses of COVID-19 patients based on the best subset, and the area under ROC curve (AUC) of the two groups is 0.874 (95% CI: 0.833-0.915) and 0.842 (95% CI: 0.765-0.920). CONCLUSION Two prediction models for COVID-19 were developed in the patients with COVID-19 based on random forest algorithm, which provides a simple tool for the early prediction of COVID-19 mortality.
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Ma X, Gao H, Yang B, Zhao H, Zhu Z. Huaier Polysaccharide Attenuates Doxorubicin-Induced Acute Cardiotoxicity by Regulating Ferroptosis. Bull Exp Biol Med 2022; 174:37-42. [PMID: 36437332 PMCID: PMC9702723 DOI: 10.1007/s10517-022-05644-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Indexed: 11/29/2022]
Abstract
We studied the effects of Huaier polysaccharide (HP) in doxorubicin-induced myocardial injury in mice. The content of HP in Trametes robiniophila Murr medicinal fungus determined by the phenol-sulfuric acid method was 85.25%. In the in vitro model, the viability of H9c2 cells was significantly increased after HP treatment compared to the control, while doxorubicin (DOX) decreased this parameter. The inhibitory effect of DOX on cell viability was attenuated after HP treatment. In the in vivo model, the body weight of mice in DOX and DOX+HP groups was significantly decreased compared to the control group. ECG showed significantly elevated ST segment in the DOX group, while in the DOX+HP group, ECG was close to normal. The levels of cardiotoxicity markers cTnI and lactate dehydrogenase in the DOX+HP group were significantly lower than in the DOX group. In the DOX group, the myocardial tissue had obvious structural disorder and interfibrillar vacuoles. In the DOX+HP group, the cardiomyocytes were neatly arranged without interfibrillar vacuoles. The expression of the ferroptosis marker glutathione peroxidase 4 was increased in the DOX+HP group compared to the DOX group. Thus, our study reveals that HP attenuated DOX-induced myocardial injury in mice probably by regulating ferroptosis.
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Shi Y, Chen W, Lin H, Gao Z, Yang B, Yang K, Chen D, Wang Z, Fan Q, Hua R, Liu H, Zhang A. An application research for near-surface repository of strontium-90 sorption kinetic model on mudrocks. KERNTECHNIK 2021. [DOI: 10.1515/kern-2021-1021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study,90Sr was used as the test radionuclide to characterize the sorption kinetics and effects of initial 90Sr activity and remaining 90Sr in solid concentration were simulated for a near-surface repository. The study focused on the sorption characteristics of radionuclides in unsaturated groundwater environment (or vadose zone) is the important information for investigating the near-surface disposal of intermediate and low-level radioactive waste (ILLW). Moreover, the 90Sr sorption experiments reached equilibrium within 56 h, which fit to the first order sorption kinetic model, and the remaining 90Sr in mudrock samples showed obvious sorption equilibrium hysteresis, which fit to the second order sorption kinetic model. Before reaching the maximum sorption capacity, the sorption rate constant increases with 90Sr increasing; the distribution coefficient (Kd) of 56 h decreases with the remaining 90Sr decreasing. In addition, it showed that the slow sorption process dominated before the sorption reaches equilibrium. In fact, a reliable safety assessment methodology for on-going near-surface repository required a lot of the radionuclides parameters with local environment including the radionuclides sorption/desorption rate constant and maximum sorption capacity.
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Liu G, Wang XG, Luan ZZ, Zhou LF, Xia SY, Yang B, Tian YZ, Guo GH, Du J, Wu D. Magnonic Unidirectional Spin Hall Magnetoresistance in a Heavy-Metal-Ferromagnetic-Insulator Bilayer. PHYSICAL REVIEW LETTERS 2021; 127:207206. [PMID: 34860044 DOI: 10.1103/physrevlett.127.207206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
We report the observation of the unidirectional spin Hall magnetoresistance (USMR), which depends on the current or magnetization direction, in heavy-metal-ferromagnetic-insulator bilayer, Pt-Y_{3}Fe_{5}O_{12} (YIG). This USMR is apparently not caused by the mechanisms established in metallic bilayer, in which the ferromagnetic layer is required to be electrically conductive. From the magnetic field, current, temperature, and YIG thickness dependent measurements, the USMR is attributed to the asymmetric magnon creation and annihilation induced by the spin-orbit torque. This asymmetry and the resultant USMR are further revealed by the micromagnetic simulations combined with the spin-orbit torque and the spin drift-diffusion model. Our finding exhibits a nonlinear manipulation of magnons with the charge current.
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Yang B, Zhao JL, Huang ZC, Su ZZ, Li MT, Zeng XF, Hu CJ. [Value of IgA antiphospholipid antibodies in diagnosis of the antiphospholipid syndrome]. ZHONGHUA YI XUE ZA ZHI 2021; 101:3404-3410. [PMID: 34758544 DOI: 10.3760/cma.j.cn112137-20210424-00976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To examine the prevalence of multiple antiphospholipid antibodies (aPL) subtypes in healthy people and antiphospholipid syndrome (APS) patients, and to assess the value of IgA-aPL in the diagnosis of APS. Methods: According to the 2006 Sydney International APS Classification Criteria, a total of 218 APS patients who were admitted to Peking Union Medical College Hospital or West China Hospital of Sichuan University from July to December 2019 were enrolled. Among them, 66 were males, and 152 were females, aged (44.5±15.4) years, including 148 primary APS patients and 70 secondary APS patients. Age-and gender-matched controls were collected at the same period at the ratio of 1∶1 with the APS cases. IgA/IgG/IgM anticardiolipin antibodies (aCL) and anti-β2 glycoprotein I antibodies (aβ2GPI) were detected by chemiluminescent immunoassay. The differences of indicators between groups were analyzed, and the receiver operating characteristic (ROC) curve was used to evaluate the diagnostic value of IgA-aPL for APS. Results: The positivity of IgA-aCL and IgA-aβ2GPI was 20.6% and 15.6% in the APS patients, while in the IgG/IgM-aCL or IgG/IgM-aβ2GPI negative individuals, the isolated positivity of IgA-aCL and IgA-aβ2GPI was only 2.3% and 0.9%, respectively. Accordingly, IgA-aCL and IgA-aβ2GPI isolated positivity could be used to diagnose APS (P=0.216, 1, respectively). The area under the ROC curve (AUC) of IgG/IgM-aCL for APS diagnosis was 0.833, which was significantly better than that of IgG-aCL alone (AUC=0.776, P<0.001); while the AUC of IgA/IgG/IgM-aCL was 0.833, which could not further increase the diagnostic value for APS (P=0.287). As for aβ2GPI, the diagnostic efficacy of combined IgG/IgM (AUC=0.875) or IgA/IgG/IgM (AUC=0.875) antibodies was not superior to IgG-aβ2GPI used alone (AUC=0.869, both P>0.05). Besides, patients with IgA-aPL were more likely to have heart valve lesions and thrombocytopenia (both P<0.05). Conclusion: Based on the existing serological markers, such as lupus anticoagulant, IgG/IgM subtype of aCL and aβ2GPI, testing IgA-aCL and IgA-aβ2GPI cannot further improve the predictive value of APS. However, IgA-aPL is associated with clinical manifestations of APS, including heart valve lesions and thrombocytopenia.
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Liu Q, Long Y, Zhang YF, Zhang ZY, Yang B, Chen CY, Huang LS, Su Y. Phenotypic and genetic correlations of pork myoglobin content with meat colour and other traits in an eight breed-crossed heterogeneous population. Animal 2021; 15:100364. [PMID: 34601209 DOI: 10.1016/j.animal.2021.100364] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 08/18/2021] [Accepted: 08/23/2021] [Indexed: 10/20/2022] Open
Abstract
Meat colour is one of the most important meat quality traits affecting consumption desire. Genetic improvement for meat colour traits is not so easy because pigs can be phenotyped only after slaughter. Besides the parameters from the optical instrument, other indexes that reflect the material basis of meat colour should be measured accurately and used in the genomic analysis. Myoglobin (Mb) is the main chemical component determining meat colour. However, to what extent the Mb content contributes to meat colour, and whether it can be used as a trait for pig breeding to improve meat colour, and the correlations of Mb content with complex porcine traits are largely unknown. To address these questions, we measured the muscle Mb content in 624 pigs from the 7th generation of a specially designed eight breed-crossed pig heterogeneous population, evaluated its phenotypic and genetic correlations with longissimus thoracis colour score at 24 h after slaughter. More than that, we also systematically phenotyped more than 100 traits on these animals to evaluate the potential correlations between muscle Mb content and economically important traits. Our results showed that the average muscle Mb content in the 624 pigs was 1.00 mg/g, ranging from 0.51 to 2.17 mg/g. We found that higher Mb content usually correlated with favourable meat colour, higher marbling score, less moisture content, and less drip loss. Genetic correlation analysis between muscle Mb content and 101 traits measured in this study shows that Mb content is also significantly correlated with 31 traits, including marbling, shear force, firmness, and juiciness. To our knowledge, this is one of the largest studies about the correlations of muscle Mb content with as many as 100 various traits in a large-scale genetically diversified population. Our results showed that the Mb content could be a selection parameter for the genetic improvement of meat colour. The selection for higher Mb content will also benefit marbling, shear force, firmness, and overall liking but might not affect the growth, carcass, and fat deposition traits.
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Yang B, Tang KK, Geng H, Lam WW, Wong YS, Huang CY, Chiu TL, Kong CW, Cheung CW, Cheung KY, Yu SK. Comparison of modeling accuracy between Radixact ®and CyberKnife ®Synchrony ®respiratory tracking system. Biomed Phys Eng Express 2021; 7. [PMID: 34416743 DOI: 10.1088/2057-1976/ac1fa5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/20/2021] [Indexed: 11/12/2022]
Abstract
Synchrony Respiratory Tracking system adapted from CyberKnife has been introduced in Radixact to compensate the tumor motion caused by respiration. This study aims to compare the modeling accuracy of the Synchrony system between Radixact and CyberKnife. Two Synchrony plans based on fiducial phantoms were created for CyberKnife and Radixact, respectively. Different respiratory motion traces were used to drive a motion platform to move along the superoinferior and left-right direction. The cycle time and the amplitude of target/surrogate motion of one selected motion trace were scaled to investigate the dependence of modeling accuracy on the motion characteristic. The predicted target position, the correlation error, potential difference (Radixact only) and standard error (CyberKnife only) were extracted from raw data or log files of the two systems. The modeling accuracy was evaluated by calculating the root-mean-square (RMS) error between the predicted target positions and the input motion trace. A threshold T95 within which 95% of the potential difference or the standard error lay was defined and evaluated. Except for the motion trace with a small amplitude and a good (linear) correlation between target and surrogate motion, Radixact showed smaller RMS errors than CyberKnife. The RMS error of both systems increased with the motion amplitude and showed a decreasing trend with the increasing cycle time. No correlation was found between the RMS error and the amplitude of surrogate motion. T95 could be a good estimator of modeling accuracy for CyberKnife rather than Radixact. The correlation error defined in Radixact were largely affected by the number of fiducial markers and the setup error. In general, the modeling accuracy of the Radixact Synchrony system is better than that of the CyberKnife Synchrony system under unfavorable conditions.
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Zhang D, Deng T, Luo Z, Zhu A, Yang B, Zhong H, Li S, Yang X. [Surface modification of titanium implant with hBMP-2/hIGF-1 for promoting biocompatibility and osteogenesis]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:1277-1282. [PMID: 34549722 DOI: 10.12122/j.issn.1673-4254.2021.08.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To prepare the human bone morphogenetic protein-2(hBMP-2)/human insulin-like growth factor-1(hIGF-1)coating titanium(Ti)and assess its performance as a dental implant material. METHODS hBMP-2 and hIGF-1 were coated to the smooth surface of a Ti plate, and its efficacy for promoting bone formation and bone integration was compared with a pristine Ti plate.The surface characteristics of the metal samples were evaluated using scanning electron microscope (SEM) and by contact angle measurement.MG63 cells were seeded on the surface of the Ti plates, and MTT assay and alizarin red staining was used to examine the cell proliferation and formation of calcified nodules, respectively.Alkaline phosphatase (ALP)secretion of the cells was examined with ELISA, and cellular expressions of osteocalcin and osteopontin were detected with Western blotting for assessing osteogenesis. RESULTS SEM examination showed that the surface of Ti with hBMP-2 and hIGF-1 coating presented with a radial pattern resembling snowflakes.The contact angles of non-coated Ti, hBMP-2-coated Ti, hIGF-1-coated, and hBMP-2/-hIGF-1-coated Ti samples were 83.2°, 54°, 56° and 54°, respectively.Compared with the non-coated Ti plate, the surface-modified Ti samples showed a significantly smaller contact angle (P=0.032, 0.029, and 0.028), indicating a good hydrophilicity of the samples.MTT assay showed that MG63 cells grew well on the surface of the coated Ti plates.The hBMP-2/IGF-1 coating significantly induced cellular secretion of ALP(P=0.021, 0.014)and obviously promoted osteogenesis of MG63 cells (P < 0.05).Western blotting results showed that hBMP-2/IGF-1 coating significantly enhanced the expressions of osteocalcin and osteopontin in the seeded cells (P < 0.05). CONCLUSION hBMP-2 and hIGF-1 coating of Ti material can promote osteogenesis of the cells seeded on its surface to improve the performance of such Ti material as dental implants.
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