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Lou JQ, Li Y, Cui QW, Zhang P, Sun H, Tang H, Zhuang MM, Sun Y. [A prospectively randomized controlled study of the effects of intensive insulin therapy combined with glutamine on nutritional metabolism, inflammatory response, and hemodynamics in severe burn patients]. ZHONGHUA SHAO SHANG ZA ZHI = ZHONGHUA SHAOSHANG ZAZHI = CHINESE JOURNAL OF BURNS 2021; 37:821-830. [PMID: 34645147 DOI: 10.3760/cma.j.cn501120-20210428-00159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the effects of intensive insulin therapy combined with glutamine on nutritional metabolism, inflammatory response, and hemodynamics in severe burn patients. Methods: Thirty-two severe burn patients who met the inclusion criteria and hospitalized in the Affiliated Huaihai Hospital of Xuzhou Medical University from June 2017 to January 2019 were recruited into a prospectively randomized controlled study. According to the random number table, the patients were divided into conventional insulin therapy alone group, conventional insulin therapy+glutamine group, intensive insulin therapy alone group, and intensive insulin therapy+glutamine group, with 8 patients in each group, with genders of 5 males and 3 females, 4 males and 4 females, 3 males and 5 females, 4 males and 4 females, and ages of (35±7), (36±9), (33±11), and (38±7) years, respectively. Patients in conventional insulin therapy alone group were treated with conventional insulin therapy on the basis of routine treatment to control the blood glucose. Patients in conventional insulin therapy+glutamine group were supplemented with alanyl-glutamine for more than 14 days in addition to the treatment in conventional insulin therapy alone group. Patients in intensive insulin therapy alone group were treated with intensive insulin therapy on the basis of routine treatment to control the blood glucose. Patients in intensive insulin therapy+glutamine group were supplemented with alanyl-glutamine in addition to the treatment in intensive insulin therapy alone group. On treatment day (TD) 1, 3, 7, and 14, the blood glucose, albumin, prealbumin, white blood cell count, procalcitonin (PCT), and C-reactive protein (CRP) of patients in the 4 groups were detected. The cardiac index (CI), stroke volume index (SVI), global end-diastolic volume index (GEDVI), systemic vascular resistance index (SVRI), extravascular lung water index (EVLWI), and pulmonary vascular permeability index (PVPI) of patients in the 4 groups on TD 1, 3, and 7 were measured. Data were statistically analyzed with Fisher's exact probability test, one-way analysis of variance, analysis of variance for repeated measurement, and Bonferroni method. Results: All patients in the 4 groups successfully completed the study, and there were no withdrawal cases. On TD 3, 7, and 14, the blood glucose of patients in intensive insulin therapy alone group ((5.9±1.3), (5.8±0.6), (5.5±0.5) mmol/L) and intensive insulin therapy+glutamine group ((5.9±1.1), (5.6±1.1), (5.2±0.8) mmol/L) were significantly lower than those in conventional insulin therapy alone group ((9.1±0.5), (8.4±0.9), (7.4±1.1) mmol/L, P<0.05). Compared with those in conventional insulin therapy alone group, the levels of albumin of patients in conventional insulin therapy+glutamine group, intensive insulin therapy alone group, and intensive insulin therapy+glutamine group were significantly increased on TD 7 and 14 (P<0.05). Compared with the level of albumin of patients in intensive insulin therapy+glutamine group, the levels of albumin of patients in conventional insulin therapy+glutamine group and intensive insulin therapy alone group were significantly decreased on TD 14 (P<0.05). Compared with those in conventional insulin therapy alone group, the levels of prealbumin of patients in conventional insulin therapy+glutamine group and intensive insulin therapy alone group were significantly increased on TD 7 and 14 (P<0.05). Compared with those in intensive insulin therapy+glutamine group, the levels of prealbumin of patients in intensive insulin therapy alone group and conventional insulin therapy+glutamine group were significantly decreased on TD 1, 7, and 14 (P<0.05). There were no statistically significant differences in the white blood cell count, PCT, and CRP of patients in the 4 groups in pairwise comparison between groups on TD 1, 3, 7, and 14 (P>0.05). On TD 3 and 7, the levels of cardiac index, SVI, GEDVI, and SVRI of patients in intensive insulin therapy+glutamine group were significantly higher than those in conventional insulin therapy alone group (P<0.05), while the levels of EVLWI and PVPI were significantly lower than those in conventional insulin therapy alone group (P<0.05). Conclusions: Glutamine combined with intensive insulin therapy can improve the hypermetabolism in patients after severe burns, reduce the decomposition and consumption of endogenous nutrient substrates, and at the same time help the recovery of cardiac function and maintenance of hemodynamic stability.
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Yan LL, Tang H. [Several thoughts in regard to ALT threshold for initiating antiviral therapy in patients with chronic hepatitis B virus infection]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2021; 29:881-882. [PMID: 34638209 DOI: 10.3760/cma.j.cn50501113-20210815-00402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Sun HB, Shan JL, Tang H. Percutaneous vertebral augmentation for osteoporotic vertebral compression fractures will increase the number of subsequent fractures at adjacent vertebral levels: a systematic review and meta-analysis. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2021; 25:5176-5188. [PMID: 34486692 DOI: 10.26355/eurrev_202108_26531] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aimed to investigate whether percutaneous vertebral augmentation (PVA) was associated with clinical and radiological subsequent adjacent fractures in patients with osteoporotic vertebral compression fractures. MATERIALS AND METHODS The systematic review was performed following PRISMA guidelines. Data were retrieved from PubMed, EMBASE, Cochrane Library, Google Scholar, Web of Science, and ClinicalTrial.gov, from database inception to March 2020. Eligible studies were those that assessed subsequent adjacent fractures after PVA in comparison with conservative treatment (CT). The number of patients with adjacent secondary vertebral fractures was calculated, and the pooled risk ratio (RR) with its 95% confidence intervals (95% CI) was used. Moreover, heterogeneity, sensitivity, and publication bias analyses were performed. RESULTS Twenty-four studies were included finally. Moreover, 20/421 (4.75%) patients from the PVA group and 25/359 (6.96%) patients from the CT group had clinical subsequent adjacent fractures, and 46/440 (10.45%) patients from the PVA group and 36/444 (8.10%) patients from the CT group had radiological subsequent adjacent fractures. Both had no significant difference between the two groups (RR = 0.67, 95% CI [0.38, 1.19], p = 0.17)/(RR = 1.13, 95% CI [0.75, 1.70], p = 0.576). However, the number of fractured vertebrae was higher in the PVA group than in the CT group (RR = 1.41, 95% CI [1.03, 1.93], p = 0.03). A sensitivity analysis did not identify specific trials that seriously deflected. No obvious publication bias was identified. CONCLUSIONS The systematic review revealed that PVA did not increase the incidence for subsequent adjacent fractures regardless of whether they were clinical or radiological fractures. However, PVA can increase the number of subsequent fractures at adjacent vertebral levels.
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Tang H, Psota P, Rosowski JJ, Furlong C, Cheng JT. Analyses of the Tympanic Membrane Impulse Response Measured with High-Speed Holography. Hear Res 2021; 410:108335. [PMID: 34450569 DOI: 10.1016/j.heares.2021.108335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/02/2021] [Accepted: 08/04/2021] [Indexed: 10/20/2022]
Abstract
The Tympanic Membrane (TM) transforms acoustic energy to ossicular vibration. The shape and the displacement of the TM play an important role in this process. We developed a High-speed Digital Holography (HDH) system to measure the shape and transient displacements of the TM induced by acoustic clicks. The displacements were further normalized by the measured shape to derive surface normal displacements at over 100,000 points on the TM surface. Frequency and impulse response analyses were performed at each TM point, which enable us to describe 2D surface maps of four new TM mechanical parameters. From frequency domain analyses, we describe the (i) dominant frequencies of the displacement per sound pressure based on Frequency Response Function (FRF) at each surface point. From time domain analyses, we describe the (ii) rising time, (iii) exponential decay time, and the (iv) root-mean-square (rms) displacement of the TM based on Impulse Response Function (IRF) at each surface point. The resultant 2D maps show that a majority of the TM surface has a dominant frequency of around 1.5 kHz. The rising times suggest that much of the TM surface is set into motion within 50 µs of an impulsive stimulus. The maps of the exponential decay time of the IRF illustrate spatial variations in damping, the least known TM mechanical property. The damping ratios at locations with varied dominant frequencies are quantified and compared.
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Jin Y, Chen Y, Hu X, Tang H, Li Q, Li P, Lv X, Xia X, Zhang J, Chen M. Abstract 1412: Whole exome sequencing reveals PI3K-ATK pathway alterations are frequent in relapsed small cell-lung cancer after chemoradiation. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-1412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Although small-cell lung cancer (SCLC) is sensitive to chemotherapy and radiotherapy initially, nearly all patients recur often with treatment-resistant disease. Comparing genomic profiles of paired treatment-naïve and recurrent tumors to understand the clonal architecture and molecular evolution of SCLC under treatment may provide novel insights into mechanisms underlying recurrence and susceptibility to further treatment.
Methods: Paired tumor samples procured at diagnosis and relapse were collected from 11 patients with limited-stage SCLC treated with concurrent chemoradiation (CCRT). All tissues underwent whole exome sequencing (WES). Genomic landscape including somatic mutations, somatic copy number alterations (SCNAs), and clonal architecture were compared between treatment-naïve and paired recurrent tumor samples. Baseline and paired recurrent plasma samples from another 9 patients with SCLC treated with CCRT were performed deep sequencing using a targeted panel containing 1021 cancer related genes.
Results: In both pre- and post-treatment tumors, TP53 (73% vs 73%), FAM135B (55% vs 64%), RB1 (45% vs 55%), and CTNND2 (45% vs 55%) were the top four most frequently mutated genes. Tobacco exposure related mutational signature was predominant in all samples. Compared with primary tumors, relapsed tumors showed significantly increased number of mutations (220 in recurrent SCLC vs 210 in primary tumor, Wilcoxon paired test, p-value = 0.016). Six of the 11 patients had increased chromosomal instability (CIS) in recurrent tumors. Relapsed tumors had more genes with copy number amplification compared to pre-treatment primary tumors although the difference did not reach statistical significance (18 vs 10, p-value = 0.066). In all of the patients, an average of 94% mutations at baseline were present in relapsed tumors. The number of clones in recurrent samples was higher than that in pre-treatment samples (13 vs 12, p-value = 0.004), indicating that new clones emerged under the treatment and tumor heterogeneity increased. A total of 648 acquired mutations in 600 genes and 140 acquired SCNAs in 123 genes were identified, in which 126 mutations were clonal (CCF>0.6) in relapsed tumors. These genes were enriched in PI3K-ATK signaling pathway and covered 91% (10/11) patients, implying the potential mechanism of chemoradiation resistance. Based on the specific mutations and mutations with increased CCF in relapsed plasma samples from the other 9 SCLCs, acquired alterations were also enriched in PI3K-ATK signaling pathway.
Conclusions: Acquired mutations and chromosomal copy number gains may play a role in relapse of limited stage SCLC post CCRT. PI3K-ATK pathway alterations are frequent in recurrent SCLCs, which may be a candidate resistant mechanism after chemoradiation.
Citation Format: Ying Jin, Yamei Chen, Xiao Hu, Huarong Tang, Qian Li, Pansong Li, Xinze Lv, Xuefeng Xia, Jianjun Zhang, Ming Chen. Whole exome sequencing reveals PI3K-ATK pathway alterations are frequent in relapsed small cell-lung cancer after chemoradiation [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 1412.
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Zhao JL, Liu X, Zhan L, Tang H, Li J, Liu M, Holdsworth E, Zhao Y. AB0221 CURRENT IMPLEMENTATION OF TREAT-TO-TARGET APPROACH IN RHEUMATOID ARTHRITIS TREATMENT: THE PERSPECTIVE OF CHINESE RHEUMATOLOGISTS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1960] [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
Background:Treat-to-target (T2T) approach is recommended as a standard management strategy in rheumatoid arthritis (RA) treatment by Chinese guideline for diagnosis and treatment of RA[1]. However, there is little known about its current implementation in China.Objectives:This study aimed to evaluate the implementation and achievement of T2T approach and explore their associated factors in Chinese RA cohort.Methods:A comprehensive cross-sectional survey of rheumatologists and their RA patients was conducted in China. Data were collected during May-Aug 2019 via physician-completed patient record forms. 60 rheumatologists provided data on demographic, clinical characteristics, treatments, and T2T approach implementation for 600 RA patients. Two logistic regressions were used to evaluate factors associated with T2T approach implementation and T2T goal achievement, respectively. Patients with missing data were not included in the models.Results:600 patients were included in this study (48.8±11.7 years, 70.3% female). 39.0% (N=234) of 600 patients were being treated with T2T approach, and 64.9% (N=366) of 564 patients had achieved T2T goal. Patients with longer disease duration (>2 years diagnosis) (odds ratio (OR) [95%CI]=1.61 [1.05, 2.49], vs. diagnosis ≤2 years), higher pain score (OR [95%CI]=1.26 [1.04, 1.51]), or receiving advanced therapy (OR [95%CI]=6.91 [3.64, 13.13]) were more likely to use T2T. Patients with BMI >23.9kg/m2 (OR [95%CI]=2.83 [1.59, 5.04], vs. BMI≤23.9kg/m2), or who worked full-time (OR [95%CI]=2.12 [1.26, 3.57]) were more likely to achieve T2T goal, while patients with more pain (OR [95%CI]=0.77 [0.64, 0.92]) were less likely to achieve T2T goal.Conclusion:Low implementation of T2T approach is observed in Chinese RA treatment. Longer disease duration, more pain, and receiving advanced therapy are associated with higher probability of T2T use, while higher BMI, full-time work and less pain are associated with higher probability of T2T goal achievement. Standard diagnosis and treatment according to guidelines may improve T2T approach implementation.References:[1]Association, C.R., 2018 Chinese guideline for the diagnosis and treatment of rheumatoid arthritis. Zhonghua nei ke za zhi, 2018. 57(4): p. 242.Disclosure of Interests:Jiu-liang Zhao: None declared, Xin Liu Employee of: Eli Lilly and Company, Lujing Zhan Employee of: Eli Lilly and Company, Hongyu Tang Employee of: Eli Lilly and Company (Intern), Jinnan Li Employee of: Eli Lilly and Company, Mengru Liu Employee of: Eli Lilly and Company, Elizabeth Holdsworth Consultant of: Eli Lilly and Company, Employee of: Adelphi Real World, Yan Zhao: None declared
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Chen M, Jin Y, Chen Y, Hu X, Tang H, Li Q, Li P, Lv X, Xia X, Zhang J. PI3K-AKT pathway alterations are revealed as a potential mechanism of chemoradiation resistance in small cell lung cancer by whole-exome sequencing. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.e20573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e20573 Background: Although small-cell lung cancer (SCLC) is sensitive to chemotherapy and radiotherapy initially, nearly all patients recur often with treatment-resistant disease. Comparing genomic profiles and clonal architecture of paired treatment-naïve and recurrent tumors may provide novel insights into mechanisms underlying recurrence and susceptibility to further treatment. Methods: Paired tumor samples procured at diagnosis and relapse were collected from 11 patients (pts) with limited-stage SCLC treated with concurrent chemoradiation (CCRT). All tissues underwent whole exome sequencing (WES). Genomic landscape including somatic mutations, somatic copy number alterations (SCNAs), and clonal architecture were compared between treatment-naïve and paired recurrent tumor samples. Baseline and paired recurrent plasma samples from another 9 pts with SCLC treated with CCRT were performed deep sequencing using a targeted panel containing 1021 cancer related genes. Results: We observed TP53 and RB1 alterations including mutations and SCNAs in the majority of treatment-naïve ( TP53 in 10 of 11, RB1 in 7 of 11 pts) and relapse samples ( TP53 in 8 of 11, RB1 in 8 of 11 pts). Tobacco exposure related mutational signature was most or second predominant in 11 pre-treatment and 9 recurrent samples, respectively. Compared with primary tumors, relapsed tumors showed significantly increased number of mutations (220 vs 210, p = 0.016). A high proportion of shared mutations between baseline and PD samples ranging from 39% to 94% was observed. More than half (n = 6) of the 11 pts had increased chromosomal instability in recurrent tumors. A total of 687 relapse-specific also called acquired mutations in 633 genes were identified, in which 158 mutations with cancer cell fraction (CCF) > 0.6. These genes were enriched in PI3K-ATK signaling pathway and covered 73% (8/11) pts. Of the 9 paired plasma samples performed by targeted sequencing, genes with specific mutations and mutations with increased CCF in relapsed plasma samples were also enriched in PI3K-ATK pathway. In vitro proliferation assay indicated that PI3K inhibitor gave rise to a marked decrease in proliferation after combined with cisplatin, implying the potential mechanism of chemoradiation resistance. The number of clones in recurrent samples was higher than that in pre-treatment samples (13 vs 12, p = 0.004), indicating that new clones emerged under the treatment and tumor heterogeneity increased. Patients characterized by weakening of the major treatment-naïve clone tended to exhibit relatively longer PFS than those with sustaining major clone in both b baseline and relapsed tumors (p = 0.034). Conclusions: PI3K-ATK pathway alterations are frequent in recurrent SCLCs, which may be a candidate resistant mechanism after chemoradiation. PFS is probably associated with clonal evolutionary pattern.
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Han N, Yan LL, Du LY, Huang FJ, Tang H. [Role of the liver-enriched transcription factor binding site mutation in the C promoter region of hepatitis B virus genome for HBx-enhanced hepatitis B virus replication]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2021; 29:350-355. [PMID: 33979962 DOI: 10.3760/cma.j.cn501113-20200923-00523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To construct a recombinant HBV replication-type plasmid with liver-enriched transcription factor binding site mutation at proximal of HBV C promoter in order to elucidate the role of HBx-enhanced HBV replication. Methods: Site-directed mutagenesis technology was used to construct a recombinant plasmid with liver-enriched transcription factor binding site mutation at proximal of HBV C promoter on the basis of wild-type HBV replicating plasmid and HBV replicating plasmid lacking HBx expression. Subsequently, plasmid transfection was carried out in HBV liver cancer cell replication model and mouse replication model, and HBV replication intermediates of cells and mouse liver tissue were extracted for detection. Results: Based on the HBV replicating plasmid, the HBV replicating plasmid with liver-enriched transcription factor binding site mutation at proximal of HBV C promoter was successfully constructed. HBx-enhanced HBV replication were detected in both the HBV liver cancer replication model and the mouse replication model. After mutating liver-enriched transcription factor binding site mutation at proximal of HBV C promoter, the effect of HBx on the enhancement of HBV replication was not significantly affected. Conclusion: HBx may not enhance HBV replication through liver-enriched transcription factor binding site mutation at proximal of HBV C promoter. The role of other liver-enriched transcription factor binding sites in HBx-enhanced HBV replication needs further study.
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Tang H, Tan B, Zhou WX, Qian JM. [Adult Hirschsprung's allied disease presented with colonic ulcer accompanied Clostridium difficile infection]. ZHONGHUA NEI KE ZA ZHI 2021; 60:469-472. [PMID: 33906278 DOI: 10.3760/cma.j.cn112138-20200826-00776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Fang Y, Zhang S, Yin J, Shen YX, Wang H, Chen XS, Tang H. LINC01535 promotes proliferation and inhibits apoptosis in esophageal squamous cell cancer by activating the JAK/STAT3 pathway. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2021; 24:3694-3700. [PMID: 32329845 DOI: 10.26355/eurrev_202004_20832] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To detect the expression of long intergenic non-coding ribonucleic acid (LINC) 01535 in esophageal squamous cell cancer (ESCC) tissues and cells, and to investigate the influences of LINC01535 on the proliferation and apoptosis of ESCC cells and the possible mechanism. PATIENTS AND METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was performed to determine the relative expression of LINC01535 in 43 cases of ESCC tissues and human esophageal cancer cells (KYSE30, EC9706, TE-13, and Ecal09) compared with human esophageal mucosal epithelial cells (HET-1A). The esophageal cancer cells with the highest expression were selected and transfected with small interfering RNA (si)-LINC01535 (experimental group) or si-negative control (NC) (control group). The interference efficiency was measured via qRT-PCR assay. Regulatory effects of LINC01535 on cell proliferative capacity was examined through colony formation assay and cell proliferation assay [Cell Counting Kit-8 (CCK-8)]. Cell cycle and apoptosis influenced by LINC01535 were detected via flow cytometry. Western blotting was applied to determine the expression changes in the molecular markers of the Janus kinase/signal transducer and activator of transcription 3 (JAK/STAT3) signaling pathway. RESULTS LINC01535 expression in ESCC tissues and cells was remarkably higher than that in para-carcinoma tissues and esophageal mucosal epithelial cells. Knockdown of LINC01535 decreased proliferative capacity, arrested cell cycle in G1/G0 phase, and increased apoptotic rate of ESCC cells. The expressions of the molecular markers of the JAK/STAT3 signaling pathway were altered after knockdown of LINC01535. The above results illustrated that LINC01535 accelerated the proliferation but repressed the apoptosis of ESCC cells by regulating the JAK/STAT3 signaling pathway. CONCLUSIONS The expression of LINC01535 is up-regulated in ESCC tissues and cells, and the highly expressed LINC01535 promotes the proliferation and inhibits the apoptosis of ESCC cells by regulating the JAK/STAT3 signaling pathway. Our findings provide new directions for the diagnosis and treatment of esophageal cancer.
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Tang H, Wu R, Zhu YW, Liu WH, Lu ZH. [Application progress of tissue in situ specific staining combined with mass spectrometry in the identification of amyloidosis and precise typing of deposited proteins]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2021; 50:293-296. [PMID: 33677904 DOI: 10.3760/cma.j.cn112151-20200524-00409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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He YX, Li G, Liu Y, Tang H, Chong ZY, Wu XJ, Jin X, Zhang SY, Wang M. Endovascular treatment of visceral aneurysms and pseudoaneurysms. J BIOL REG HOMEOS AG 2021; 35:131-140. [PMID: 33567807 DOI: 10.23812/20-377-a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Visceral artery aneurysm (VAA) is a rare and potentially life-threatening condition, defined as true artery aneurysms and pseudoaneurysms of splanchnic circulation and renal artery. This study reports our experience in the diagnosis and endovascular treatment of visceral artery aneurysms (VAAs) over a 10-year period. Between 2008 and 2018, a total of 24 VAAs in 21 patients were diagnosed by clinical symptoms and a combination of imaging techniques, such as Doppler ultrasound, computed tomography angiogram, and catheter angiogram. All patients underwent endovascular treatment to exclude aneurysms. Oral antiplatelet medicine was administered, and imaging examination was performed during follow-up. Technical success was achieved in all 21 patients, and no periprocedural complications occurred. Endovascular coiling alone was employed in 10 aneurysms. Coiling was combined with gelfoam in 2 aneurysms. Coiling was assisted by stent in 4 aneurysms. Covered stents were deployed in 8 aneurysms individually. Clinical symptoms disappeared or highly improved in all patients after treatment. None of the patients showed recurrent symptoms after discharge. However, two cases with new aneurysms after 6 and 8 months, respectively, and one case with in-stent thrombosis after 12 months were reported during follow-up. This study may justify the efficacy of percutaneous endovascular coil embolization and stent deployment. It also provides beneficial experience about how to choose appropriate various endovascular strategies based on both clinical symptoms and aneurysm anatomy condition.
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Zhu H, Rivin Del Campo E, Ye J, Simone CB, Zhu Z, Zhao W, Amini A, Zhou J, Wu C, Tang H, Fan M, Li L, Lin Q, Xia Y, Li Y, Li J, Mo M, Jia H, Lu S, Wang J, Nie Y, Chen J, Wu S, Hamaji M, Haque W, Jeong BK, Shridhar R, Zhang Z, Chen Y, Zhao K. Involved-Field Irradiation in Definitive Chemoradiotherapy for Locoregional Esophageal Squamous Cell Carcinoma: Results From the ESO-Shanghai 1 Trial. Int J Radiat Oncol Biol Phys 2021; 110:1396-1406. [PMID: 33677048 DOI: 10.1016/j.ijrobp.2021.02.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 02/13/2021] [Accepted: 02/19/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE To evaluate the feasibility and efficacy of involved-field irradiation in definitive chemoradiation therapy for locoregional esophageal squamous cell carcinoma. METHODS AND MATERIALS Patterns in recurrence and elective nodal failure were analyzed in patients from the previously published ESO-Shanghai 1 trial, who received definitive chemoradiation therapy with involved-field irradiation to 61.2 Gy in 34 fractions using intensity modulated radiation therapy planning. Nodal regions were delineated using the lymph node map from the sixth edition of the American Joint Committee on Cancer staging system. Elective nodal failure was defined as recurrence in the regional nodal area outside the planning target volume. Extensive elective nodal failure, defined as an extensive nodal area regardless of tumor location, was calculated for additional analysis. The incidental (ie, mean) irradiation dose of each node and each region was evaluated. RESULTS With a median follow-up of 48.7 months among survivors, the 3-year actuarial rate for overall survival was 53.6%, and the median overall survival was 44.8 months (95% confidence interval, 34.6-55.0). Of the 436 patients included in this study, 258 patients (59.2%) experienced treatment failure. Elective nodal failure was experienced by 37 patients (8.5%), 7 (1.6%) of whom encountered nodal-only failure. The 3-year actuarial rates of elective nodal control and elective nodal-only control were 89.7% and 97.9%, respectively. The median incidental dose of these nodes was 33.2 Gy (interquartile range [IQR], 1.3-50.7 Gy). The median distance of each node to the planning target volume was 1.4 cm (IQR, 0.6-4.9 cm). Extensive elective nodal failure was experienced by 51 patients (11.6%), and 20 (4.6%) patients had nodal-only failure. The 3-year extensive elective nodal control and extensive elective nodal control-only rates were 86.0% and 94.3%, respectively. The median incidental dose of these nodes was 23.2 Gy (IQR, 1.1-53.5 Gy). The median distance of each node to the planning target volume was 2.0 cm (IQR, 0.6-5.5 cm). CONCLUSION Involved-field irradiation can achieve a low rate of isolated nodal failure and a satisfactory survival outcome. The use of elective nodal irradiation may be unnecessary in definitive chemoradiation therapy for the treatment of locoregional esophageal squamous cell carcinoma.
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Li Q, Ho CP, Tang H, Okano M, Ikeda K, Takagi S, Takenaka M. Si racetrack optical modulator based on the III-V/Si hybrid MOS capacitor. OPTICS EXPRESS 2021; 29:6824-6833. [PMID: 33726194 DOI: 10.1364/oe.418108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
We have fabricated a Si racetrack optical modulator based on a III-V/Si hybrid metal-oxide-semiconductor (MOS) capacitor. The III-V/Si hybrid MOS optical phase shifter was integrated to a Si racetrack resonator with a coupling length of 200 µm and a coupling gap of 700 nm. The fabricated Si racetrack resonator demonstrated a small VπL of 0.059 Vcm. For 10-dB optical intensity modulation, the Si racetrack resonator showed a 60% smaller driving voltage than a Mach-Zehnder interferometer modulator with the same phase shifter, leading to a better balance between high energy efficiency and large modulation bandwidth.
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Liu L, Tang H, Feng LL, Cheng TY. Hemalin from Haemaphysalis flava ticks: cloning, expression and antithrombogenicity. MEDICAL AND VETERINARY ENTOMOLOGY 2021; 35:42-50. [PMID: 32748973 DOI: 10.1111/mve.12467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 06/24/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
Hemalin, initially described in Haemaphysalis longicornis, is a protein with anticoagulant activity. We retrieved a gene fragment functionally annotated as hemalin from H. flava salivary gland transcriptomic library, but its full-length complementary DNA (cDNA) and antithrombogenicity have not been investigated in the species. Here we cloned the full length of hemalin (Hf-hemalin) by 3'-end rapid-amplification of cDNA ends, and the open reading frame (ORF) of Hf-hemalin was expressed in Escherichia coli. The recombinant protein (rHf-Hemalin) was tested for antithrombogenicity. The full-length of Hf-hemalin was 607 bp with an ORF of423 bp. Protein encoded by Hf-hemalin was predicted to contain 2 Kunitz domains and a signal peptide. The expression of Hf-hemalin in salivary glands, midguts and ovaries was higher in the semi-engorged than the fully engorged. Prokaryotic expression yielded a product of 40 kDa containing a glutathione S-transferase (GST) tag. Incubation of rHf-Hemalin with rat plasma significantly extended prothrombin time and activated partial thromboplastin time compared with normal saline and GST controls. Our data demonstrated that Hemalin from H. flava shared a similar primary structure with that from H. longicornis, and was also anticoagulant. Further investigations are needed to test its feasibility to be an antigen candidate for the development of vaccines against ticks.
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Tan B, Tang H, Ren XY, Zhou WX, Qian JM, Zhang L, Zhang XT. [Clinical characteristics and microbiome analysis in patients with anti-programmed cell death protein 1 related colitis]. ZHONGHUA NEI KE ZA ZHI 2021; 59:887-893. [PMID: 33120493 DOI: 10.3760/cma.j.cn112138-20200216-00082] [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 analyze clinical characteristics and monitor microbiome changes in patients with anti-PD-1 associated colitis. Methods: Two patients with non-small cell lung cancer who developed colitis after treated with anti-PD-1 antibodies were retrospectively analyzed in Peking Union Medical College Hospital from January 2019 to January 2020. The clinical symptoms, endoscopic and pathological manifestations, as well microbiome changes were analyzed and compared during pre-treatment, post-treatment and relapse. Results: The main clinical manifestations included diarrhea, elevated inflammatory indicators, colonic mucosal diffuse hyperemic edema with erosion by endoscopy. Changes in the structure of crypts were common pathological characteristics. Glucocorticoids were effective agents, which achieved clinical remission and mucosal healing. The microbiome composition of OTUs was different. After glucocorticoid treatment, the alpha diversity Observed species, Shannon, Simpson, Chao1, ACE indexes all decreased. The Firmicutes decreased with Bacteroidetes increasing in phylum level; while the Bacteroides increased with Ruminococcaceae decreasing in genus level. Lactobacillus was the potentially beneficial genus. Conclusion: Patients developing anti-PD-1 associated colitis have characteristic clinical and pathological manifestations. Glucocorticoids are effective treatment. The fecal microbiome diversity, relative abundance of major phylum and genus have changed after treatment.
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Tang H, Tan B, Qian JM. [A case of colonic ulcer caused by non-tuberculous mycobacterium infection]. ZHONGHUA NEI KE ZA ZHI 2020; 59:815-817. [PMID: 32987487 DOI: 10.3760/cma.j.cn112138-20200131-00045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Yang SY, Ren H, Li CF, Tang H. [Screening core genes and cyclin B2 as a potential diagnosis, treatment and prognostic biomarker of hepatocellular carcinoma based on bioinformatics analysis]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2020; 28:773-783. [PMID: 33053978 DOI: 10.3760/cma.j.cn501113-20200818-00461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To screen out and explore the core gene (Hub gene) involvement and the potential role of cyclin B2 (CCNB2) in the development and prognosis of hepatocellular carcinoma (HCC) through bioinformatics methods. Methods: Four HCC-related datasets were screened, and downloaded from the GEO database. GEO2R tool was used to analyze data and identify the differentially expressed genes (DEGs). Gene Ontology (GO) and KEGG signal pathway enrichment analysis were completed using DAVID database and Cytoscape (ClueGO) plug-in, respectively. Protein-protein interaction network (PPI) of DEGs was established using the STRING database. Cytoscape software was used to visualize PPI network, key modules (cluster) construction and core genes identification. UCSC and UALCAN database were used to analyze the differential expression and survival of TCGA hepatocellular carcinoma core genes. Firebrowse, Oncomine and UALCAN databases were used to analyze the expression of core genes in multiple tumors including HCC. Real-time quantitative reverse transcription PCR (RT-qPCR) was used to detect the expression levels of candidate genes in HCC tissues and liver cancer cell lines. Results: A total of 73 DEGs were identified from the four datasets, including 15 up-regulated genes and 58 down-regulated genes. KEGG pathway enrichment analysis signal showed that DEGs were mainly enriched in tumor-related pathways. PPI network based on DEGs had screened the key modules and 10 core genes. CCNB2 and NCAPG were highly expressed in liver cancer tissues in multiple databases. CCNB2 was positively correlated with NCAPG and was considered as a key gene related to prognosis (P < 0.01). RT-qPCR results showed that CCNB2 was highly expressed in human HCC tissues and cell lines (P < 0.01). Conclusion: Successfully screened DEGs and core genes related to HCC. Among them, CCNB2 is highly expressed in HCC and is related to the survival and prognosis of patients, so it is expected to become a biomarker for the diagnosis and prognosis of HCC.
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Tang H, Russell BK, Maksimchuk A, Campbell PT, Manuel MJE, Willingale L. Scintillator detector characterization for laser-driven proton beam imaging. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:123304. [PMID: 33380001 DOI: 10.1063/5.0022166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
The spatial resolution and imaging characteristics of plastic scintillators are characterized using laser-driven proton beams. Laser-driven proton beams typically have broad energy spectra and are accompanied by relativistic electrons and high-energy photons, both potentially contributing to background noise. Different types and thicknesses of Eljen Technology scintillators are compared to determine their intrinsic point spread function. Point-projection imaging of a mesh is used to compare the imaging resolution of the scintillator to the usual imaging detector, radiochromic film, and is found to be reasonably comparable and sufficient for many experimental applications.
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Tan B, Tang H, Xu Y, Chen MJ, Wang MZ, Qian JM. [Protective effect and mechanism of Lactobacillus rhamnosus on immune checkpoint inhibitors related colitis in mice]. ZHONGHUA YI XUE ZA ZHI 2020; 100:3332-3337. [PMID: 33202497 DOI: 10.3760/cma.j.cn112137-20200520-01598] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Modeling the immune-related adverse events (irAE) colitis in mice, and explore the protective effect and related mechanism of Lactobacillus rhamnosus GG (LGG) on irAE colitis. Methods: C57BL/6 mice were divided into dextran sodium sulfate (DSS) group (n=3), DSS+anti-programmed death receptor 1 (PD-1) group (n=4), DSS+anti-PD-1+anti-cytotoxic T lymphocyte associated protein 4 (CTLA-4) Group (n=4), DSS+anti-PD-1+anti-CTLA-4+LGG group (n=4), all were given corresponding drugs and probiotics intervention. The severity of colitis were assessed by weight loss, disease activity index (DAI), colon length, colon histopathological score. The inflammatory cytokines and T cell immunity of CD4+, CD8+, FoxP3+regulatory T cells (Treg), were detected by real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and immunohistochemical staining respectively. Results: Compared to DSS group, the Day 9 weight [(87.40±1.79)% vs (94.57±0.53)%, P<0.05], colon length [(5.33±0.27)cm vs (6.63±0.12)cm, P<0.05] were lower, and DAI score(2.66±0.24 vs 0.89±0.48), colon histopathological score (12.50±1.04 vs 5.67±0.33), tumor necrosis factor-α (TNF-α) (6.73±1.68 vs 0.91±0.40) (P<0.05), as well CD8+T cells (156.80±8.84 vs 89.00±6.66) and FoxP3+Treg cells (103.80±2.66 vs 48.33±3.18) (P<0.05) were higher in DSS+anti-PD-1+anti-CTLA-4 group. Compared to DSS+anti-PD-1+anti-CTLA-4 group, the DAI score(1.83±0.17 vs 2.66±0.24), colonic histopathology score (8.75±0.63 vs 12.50±1.04), TNF-α level (1.32±0.18 vs 6.73±1.68) (P<0.05) were lower; and CD8+T cells(97.75±3.75 vs 156.80±8.84, P<0.01) level was lower with higher FoxP3+Treg cells (126.00±8.33 vs 103.80±2.66, P=0.046) in DSS+anti-PD-1+anti-CTLA-4+LGG group. Conclusion: DSS combined with anti-PD-1 and anti-CTLA-4 can successfully modeling the irAE colitis in mice, LGG can reduce irAE colitis severity by regulating Treg cells.
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Yuan S, Chen T, Li DZ, Huang YD, Tang H, Ji P. [Assessment of the clinical effect regarding three-dimensional printing individualized titanium mesh for bone augmentation in the esthetic area]. ZHONGHUA KOU QIANG YI XUE ZA ZHI = ZHONGHUA KOUQIANG YIXUE ZAZHI = CHINESE JOURNAL OF STOMATOLOGY 2020; 55:878-884. [PMID: 33171562 DOI: 10.3760/cma.j.cn112144-20200702-00393] [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 evaluate the clinical effect of three-dimensional (3D) printing individualized titanium mesh for ridge augmentation in the esthetic zone. Methods: Forty-three patients were treated with personalized titanium mesh bone augmentation from Department of Oral Implantology, Stomatological Hospital of Chongqing Medical University from January, 2018 to June, 2020. According to the preoperative cone-beam CT (CBCT) data, the 43 patients [male: 21, female: 22, aged (30.1±5.8) years] were divided into three groups according to the Seibert classification as horizontal, vertical and horizontal-vertical classes (sample size: 14, 15, 14). Then, comprehensively the bone mass and esthetic requirements were taken into account to design and accordingly fabricate the 3D printing individualized titanium mesh. During the surgical process, autologous bone and xenogeneic bone substitutes were mixed at a 1∶1 ratio, combined with injectable platelet-rich fibrin (i-PRF) and individualized titanium mesh for ridge augmentation. All patients were recalled at 1, 3, and 6 months post-operation to observe the mesh exposure; the clinical effect of ridge augmentation was evaluated 6 months post-operation. After the implant placement and final restoration, the pink esthetic score (PES)/white esthetic score (WES) were evaluated. Results: Only one patient experienced early mesh exposure, and no obvious infection was observed. The bone gain regarding three types of bone defects was significantly higher immediately post-operation compared to pre-operation (horizontal, vertical and horizontal-vertical bone defect measured as (3.27±0.13), (17.41±0.46), (3.76±0.24), (14.37±0.89) mm pre-operation, respectively; and (5.25±0.15), (26.10±0.55), (6.35±0.29), (22.52±0.90) mm immediately post-operation, P<0.01). There was no obvious bone resorption 6 months post-operation [outcomes for horizontal, vertical and horizontal-vertical bone defect measured as (5.14±0.14), (25.67±0.52), (6.13±0.26), (22.35±0.89) mm, P>0.05]. The PES/WES scores of all patients were interpreted as "excellent". Conclusions: The 3D printing individualized titanium mesh is effective in repairing bone defects in the esthetic zone, and produces credible esthetic outcomes after implantation and final restoration.
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Zhao K, Zhu H, Campo ERD, Yun C, Ye J, Zhu Z, Zhao W, Zhou J, Wu C, Tang H, Min F, Li L, Lin Q, Xia Y, Li J. OC-0693: Involved-Field Irradiation in Definitive Chemoradiotherapy for Loco-Regional Esophageal Cancer. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00715-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ye L, Zhang Y, Tang H, Yao J, Wang G, Yang Y, Chen G. Prediction of chronic kidney disease progression used by calcineurin inhibitor concentration and estimated glomerular filtration rate early after liver transplantation. Niger J Clin Pract 2020; 23:1387-1394. [PMID: 33047695 DOI: 10.4103/njcp.njcp_91_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Background Chronic kidney disease (CKD) is a common late complication in liver-transplanted patients who have received long-term therapy with calcineurin inhibitors (CNIs). Aims: To analyze kidney disease progression after liver transplantation. Methods We analysed the clinical data of adult single-organ liver transplant recipients performed at our centre between October 2003 and September 2009. The patients with the estimated glomerular filtration rate (eGFR) greater than 60 ml/min/1.73 m2 before surgery were included in the study. Results 69 patients with complete follow-up data were analysed. We found that eGFR at 1 or 2 years after liver transplantation correlated well with eGFR at 5 years. In addition, our results showed that patients whose eGFR declined below 60 at 2 years after liver transplantation would develop an irreversible renal injury in the following years. At 2 years, 12 patients had an eGFR less than 60, which were maintained in 11 patients at 5 years (Sensitivity = 11/12, 91.67%; Specificity = 57/58, 98.28%, Youden's index = 89.95%). The annual rate of eGFR reduction of the tacrolimus group was greater than that of the tacrolimus sparing group based on the value-time variation curve in our study. Moreover, the tacrolimus concentration influenced the CKD progression at 1 and 2 years with an under the ROC curve of 0.73 and 0.78 when Youden's index was at its maximum and the tacrolimus concentrations were 8.55 and 5.96 ng/ml, respectively. Conclusion We confirmed that eGFR at 2 years after liver transplantation is useful for observing a meaningful change in eGFR and renal damage. Obtaining the appropriate serum concentration of an early decrease of the dose of CNIs and transforming non-nephrotoxic immunosuppressants would help improve renal function to prevent CKD progression and end-stage renal disease (ESRD).
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Manuel MJE, Tang H, Russell BK, Willingale L, Maksimchuk A, Green JS, Alfonso EL, Jaquez J, Carlson L, Neely D, Ma T. Enhanced spatial resolution of Eljen-204 plastic scintillators for use in rep-rated proton diagnostics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:103301. [PMID: 33138566 DOI: 10.1063/5.0014949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 09/23/2020] [Indexed: 06/11/2023]
Abstract
A pixelated scintillator has been designed, fabricated, and tested using a laser-accelerated proton source for use in proton diagnostics at rep-rated laser facilities. The work presented here demonstrates the enhanced spatial resolution of thin, organic scintillators through a novel pixelation technique. Experimental measurements using laser-generated protons incident onto 130 μm-thick scintillators indicate a >20% reduction in the scintillator point spread function (PSF) for the detectors tested. The best performing pixelated detector reduced the ∼200 μm PSF of the stock material to ∼150 μm. The fabrication technique may be tailored to reduce the pixel size and achieve higher spatial resolutions.
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Zhang Z, Chang Y, Tang H, Zhao H, Chen X, Tian G, Liu G, Cai J, Jia G. Bio-detoxification of Jatropha curcas L. cake by a soil-borne Mucor circinelloides strain using a zebrafish survival model and solid-state fermentation. J Appl Microbiol 2020; 130:852-864. [PMID: 32816375 DOI: 10.1111/jam.14825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/27/2020] [Accepted: 08/13/2020] [Indexed: 01/21/2023]
Abstract
AIMS The aims of the study were to (i) improve the evaluation criteria of detoxifying Jatropha curcas L. cake (JCC), (ii) isolate and characterize a JCC tolerant strain, (iii) explore its JCC detoxifying potential. METHODS AND RESULTS The zebrafish was employed as a survival model to screen the strains capable of detoxifying JCC. A strain identified as Mucor circinelloides SCYA25, which is highly capable of degrading all toxic components, was isolated from soil. Different solid-state fermentation parameters were optimized by response surface methodology. The optimal values for inoculation amount, moisture content, temperature, and time were found to be 18% (1·8 × 106 spores g-1 cake), 66%, 26, and 36 days, respectively, to achieve maximum detoxification of the JCC (92%). Under optimal fermentation conditions, the protein content of JCC was increased, while the concentrations of ether extract, crude fiber, toxins, and anti-nutritional substances were all degraded considerably (P < 0·05). Scanning electron microscopy and Fourier transform infrared spectrometer analysis revealed that the fermentation process could disrupt the surface structure and improve the ratio of α-helix to β-folding in the JCC protein, which may improve the digestibility when the detoxified JCC is used as a feedstuff. CONCLUSIONS Our results indicate that M. circinelloides SCYA25 is able to detoxify JCC and improve its nutritional profile, which is beneficial to the safe utilization of JCC as a protein feedstuff. SIGNIFICANCE AND IMPACT OF THE STUDY The newly identified M. circinelloides SCYA25 detoxified JCC in a safe manner to provide a potential alternative to soybean meal for the feed industry. These results also provide a new perspective and method for the toxicity evaluation and utilization of JCC and similar toxic agricultural by-products.
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