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Shuaishuai X, Wu W, Chen R, Ye C, Li Q, Chen J, Jiang Q, Ruan J. 62P Proteomic and single-cell landscape reveals novel pathogenic mechanisms of HBV-infected intrahepatic cholangiocarcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Wang Y, Liu X, Guo C, Xiong Y, Cao L, Bing Z, Song Y, Gao C, Tian Z, Lin Y, Xu Y, Xue J, Li B, Huang Z, Yang X, Cao Z, Li J, Jiang X, Si X, Zhang L, Song M, Zhou Z, Chen R, Li S, Yang H, Liang N. EP16.01-017 T-cell Repertoire Heterogeneity and Homogeneity in Synonymous Multiple Primary Lung Cancers. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Ye C, Chen R, Jiang Q, Wu W, Yan F, Li Q, Shuaishuai X, Wang Y, Jia Y, Zhang X, Shen P, Ruan J. 915P EMLI-ICC: An ensemble machine learning-based proteome and transcriptome integration algorithm for metastasis prediction and risk-stratification in intrahepatic cholangiocarcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Pandey S, Krause E, DeRose J, MacCrann N, Jain B, Crocce M, Blazek J, Choi A, Huang H, To C, Fang X, Elvin-Poole J, Prat J, Porredon A, Secco L, Rodriguez-Monroy M, Weaverdyck N, Park Y, Raveri M, Rozo E, Rykoff E, Bernstein G, Sánchez C, Jarvis M, Troxel M, Zacharegkas G, Chang C, Alarcon A, Alves O, Amon A, Andrade-Oliveira F, Baxter E, Bechtol K, Becker M, Camacho H, Campos A, Carnero Rosell A, Carrasco Kind M, Cawthon R, Chen R, Chintalapati P, Davis C, Di Valentino E, Diehl H, Dodelson S, Doux C, Drlica-Wagner A, Eckert K, Eifler T, Elsner F, Everett S, Farahi A, Ferté A, Fosalba P, Friedrich O, Gatti M, Giannini G, Gruen D, Gruendl R, Harrison I, Hartley W, Huff E, Huterer D, Kovacs A, Leget P, McCullough J, Muir J, Myles J, Navarro-Alsina A, Omori Y, Rollins R, Roodman A, Rosenfeld R, Sevilla-Noarbe I, Sheldon E, Shin T, Troja A, Tutusaus I, Varga T, Wechsler R, Yanny B, Yin B, Zhang Y, Zuntz J, Abbott T, Aguena M, Allam S, Annis J, Bacon D, Bertin E, Brooks D, Burke D, Carretero J, Conselice C, Costanzi M, da Costa L, Pereira M, De Vicente J, Dietrich J, Doel P, Evrard A, Ferrero I, Flaugher B, Frieman J, García-Bellido J, Gaztanaga E, Gerdes D, Giannantonio T, Gschwend J, Gutierrez G, Hinton S, Hollowood D, Honscheid K, James D, Jeltema T, Kuehn K, Kuropatkin N, Lahav O, Lima M, Lin H, Maia M, Marshall J, Melchior P, Menanteau F, Miller C, Miquel R, Mohr J, Morgan R, Palmese A, Paz-Chinchón F, Petravick D, Pieres A, Plazas Malagón A, Sanchez E, Scarpine V, Serrano S, Smith M, Soares-Santos M, Suchyta E, Tarle G, Thomas D, Weller J. Dark Energy Survey year 3 results: Constraints on cosmological parameters and galaxy-bias models from galaxy clustering and galaxy-galaxy lensing using the redMaGiC sample. Int J Clin Exp Med 2022. [DOI: 10.1103/physrevd.106.043520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ahmad A, Chen R, Kim D, Hartman R. LB922 Sun protection and vitamin D deficiency among racial groups. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Chen R, Ahmad A, Trepanowski N, Kim D, Hartman R. LB1009 Sun protection behaviors among Hispanic subgroups. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.1036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Liu S, Liao L, Wei W, Liang Y, Xu J, Cao L, Li S, Li L, Meng L, Qian J, Zang Q, Wang L, Xu S, Cai J, Yan N, Ma Q, Zhao N, Chen R, Hu G, Liu J, Liu X, Ming T, Li L, Sun Y, Zeng L, Li G, Yao D, Xu G, Gong X, Gao X. Development and application of limiter Langmuir probe array in EAST. FUSION ENGINEERING AND DESIGN 2022. [DOI: 10.1016/j.fusengdes.2022.113162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Tang RY, Luo M, Fan YB, Xie ZL, Huang FL, Zhang DD, Liu GF, Wang YP, Lin SQ, Chen R. [Effects of menopause on depressive and anxiety symptoms in community women in Beijing]. ZHONGHUA FU CHAN KE ZA ZHI 2022; 57:419-425. [PMID: 35775249 DOI: 10.3760/cma.j.cn112141-20220208-00064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To determine the effects of menopausal stage, age and other associated risk factors on symptoms of anxiety and depression among women in a community in Beijing. Methods: This study was a community-based prospective cohort. Participants who had transitioned through natural menopause, completed two or more depressive and anxiety symptoms evaluations, aged 35 to 64 years, and did not use hormone therapy were selected from the Peking Union Medical College Hospital aging longitudinal cohort of women in midlife to this analysis. The primary outcome variables were depressive and anxiety symptoms, assessed by hospital anxiety and depression scale (HADS). The generalized estimation equation was used in the statistical analysis. Results: Followed up from 2006 to 2014, 430 women and 2 533 HADS assessments were retained in the cohort. Depressive symptoms were more common than anxiety symptoms during all menopausal stages. The incidences of depressive and anxiety symptoms were 14.5% (19/191) and 3.1% (4/191) in the premenopausal -3 stage, respectively. The incidence increased in both menopausal transition and postmenopausal stage, with the highest incidence in the +1c stage [20.6% (155/751) and 8.8% (66/751), respectively]. However, these differences were not statistically significant (all P>0.05). Depressive symptoms were highest in the ≥60-<65 age group [20.8% (74/355)], and anxiety symptoms were highest in the ≥50-<55 age group [8.2% (62/754)]; but there were no statistical significances between different age groups and depressive and anxiety symptoms (all P>0.05). Multivariable analysis showed that high body mass index, low education status, and poor health status were independently associated with depressive symptoms (all P<0.05), and that poor health status, trouble falling asleep, and early awakening were independently associated with anxiety symptoms (all P<0.01). Conclusions: Depressive and anxiety symptoms are more common during menopausal transition and postmenopausal stage compared with reproductive stage. Depressive symptoms are more common than anxiety symptoms. To screen and assess depressive and anxiety symptoms in perimenopausal women is essential, especially for women with high risk factors.
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Liu S, Liao L, Zhong L, Wei W, Li L, Wei W, Yan N, Xing Y, Xu G, Shao L, Chen R, Hu G, Liu J, Liang Y, Han X, Cai J, Zhao N, Liu X, Ming T, Zang Q, Wang L, Zeng L, Li G, Gong X, Gao X. Upgrade and application of the gas puff imaging system in EAST. FUSION ENGINEERING AND DESIGN 2022. [DOI: 10.1016/j.fusengdes.2022.113156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Yang X, Shen H, Li Q, Dai Z, Yang R, Huang G, Chen R, Wang F, Song J, Hua H. [Interference of P2X4 receptor expression in tumor-associated macrophages suppresses migration and invasion of glioma cells]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2022; 42:658-664. [PMID: 35673908 DOI: 10.12122/j.issn.1673-4254.2022.05.05] [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 investigate the effect of interference of P2X4 receptor expression in tumor-associated macrophages (TAMs) on invasion and migration of glioma cells. METHODS C57BL/6 mouse models bearing gliomas in the caudate nucleus were examined for glioma pathology with HE staining and expressions of Iba-1 and P2X4 receptor with immunofluorescence assay. RAW264.7 cells were induced into TAMs using conditioned medium from GL261 cells, and the changes in mRNA expressions of macrophage polarization-related markers and the mRNA and protein expressions of P2X4 receptor were detected with RT-qPCR and Western blotting. The effect of siRNA-mediated P2X4 interference on IL-1β and IL-18 mRNA and protein expressions in the TAMs was detected with RT-qPCR and Western blotting. GL261 cells were cultured in the conditioned medium from the transfected TAMs, and the invasion and migration abilities of the cells were assessed with Transwell invasion and migration experiment. RESULTS The glioma tissues from the tumor-bearing mice showed a significantly greater number of Iba-1-positive cells, where an obviously increased P2X4 receptor expression was detected (P=0.001), than the brain tissues of the control mice (P < 0.001). The M2 macrophage markers (Arg-1 and IL-10) and M1 macrophage markers (iNOS and TNF-α) were both significantly up-regulated in the TAMs derived from RAW264.7 cells (all P < 0.01), but the up-regulation of the M2 macrophage markers was more prominent; the expression levels of P2X4 receptor protein and mRNA were both increased in the TAMs (P < 0.05). Interference of P2X4 receptor expression significantly lowered the mRNA(P < 0.01)and protein (P < 0.01, P < 0.05)expression levels of IL-1β and IL-18 in the TAMs and obviously inhibited the ability of the TAMs to promote invasion and migration of the glioma cells (P < 0.05). CONCLUSION Interference of P2X4 receptor in the TAMs suppresses the migration and invasion of glioma cells possibly by lowering the expressions of IL-1β and IL-18.
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Pan M, Hua K, Villait A, Zuger A, Rafati M, Chen R, Singh A. Knockdown and Inhibition of Spleen Tyrosine Kinase Decreases mTORC1 Activity and Enhances Lysosomal Biogenesis and Autolysosomal Maturation in Pancreatic Cancer Cell Lines. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r3011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lu W, Kang L, Sheu J, Chen R. T067 Vincristine sulfate inhibits platelet activation via suppressing AKT and MAPK phosphorylation. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Li J, Ma YY, Feng J, Zhao D, Ding F, Tian L, Chen R, Zhao R. [Diffuse midline gliomas with H3K27 alteration in children: a clinicopathological analysis of forty-one cases]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2022; 51:319-325. [PMID: 35359043 DOI: 10.3760/cma.j.cn112151-20210830-00625] [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 investigate the clinicopathological features of pediatric diffuse midline glioma with H3K27 alteration and to analyze their relationship with prognosis. Methods: Forty-one cases of childhood diffuse midline glioma with H3K27 alteration were collected at Children's Hospital of Fudan University (39 cases) and Xi'an Children's Hospital (2 cases), from July 2016 to July 2020. The clinical manifestations, imaging data, histopathology, immunohistochemical phenotype and molecular genetics features, tumor size, site and histological grading were evaluated. Results: Among the 41 cases, 21 were males and 20 females, the age of onset was 3-14 years, the average and median age was 7.6 years and 7.0 years, respectively. The tumor sites were brain stem (n=36) and other locations (n=5). The clinical manifestations were dizziness, gait disturbance, and limb weakness, etc. The MRI features were variable. The histology varied from low-grade to high-grade glioma with neuron differentiation. Immunohistochemistry showed that the tumor cells expressed H3K27M, GFAP, and Olig2. Genetic study showed that 76% (16/21) of tumors had H3F3A gene mutation, mostly accompanied by TP53 (62%, 13/21) missense mutation; five tumors (24%, 5/21) had HIST1H3B gene mutation, accompanied by missense mutations in ACVR1 and PI3K pathway-related gene PIK3CA (4/5) and PIK3R1 (1/5) mutations. The prognosis was dismal with only one alive and others died. The average and median overall survival time was 7 months and 4 months, respectively. Cox multivariate regression analysis showed that age, tumor location, radiologically maximum tumor diameter, histologic grading, and surgical methods were not significantly associated with overall survival rate (P>0.05). Conclusions: Pediatric diffuse midline gliomas with H3K27 alteration have unique clinicopathological and genetic characteristics. The prognosis is poor. The tumor location and histopathologic grading are not related to prognosis. New specific drugs and comprehensive treatment are needed to improve the prognosis.
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Chen R, Yang M, Song YD, Wang RX, Wen C, Liu Q, Zhou YM, Zhuang S. Effect of anhydrous betaine and hydrochloride betaine on growth performance, meat quality, postmortem glycolysis, and antioxidant capacity of broilers. Poult Sci 2022; 101:101687. [PMID: 35139439 PMCID: PMC8844660 DOI: 10.1016/j.psj.2021.101687] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 11/26/2021] [Accepted: 12/08/2021] [Indexed: 11/17/2022] Open
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Ding J, Duan Y, Wang M, Yuan Y, Zhuo Z, Gan L, Song Q, Gao B, Yang L, Liu H, Hou Y, Zheng F, Chen R, Wang J, Lin L, Zhang B, Zhang G, Liu Y. Acceleration of Brain Susceptibility-Weighted Imaging with Compressed Sensitivity Encoding: A Prospective Multicenter Study. AJNR Am J Neuroradiol 2022; 43:402-409. [PMID: 35241421 PMCID: PMC8910792 DOI: 10.3174/ajnr.a7441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/17/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE While three-dimensional susceptibility-weighted imaging has been widely suggested for intracranial vessel imaging, hemorrhage detection, and other neuro-diseases, its relatively long scan time has necessitated the clinical verification of recent progresses of fast imaging techniques. Our aim was to evaluate the effectiveness of brain SWI accelerated by compressed sensitivity encoding to identify the optimal acceleration factors for clinical practice. MATERIALS AND METHODS Ninety-nine subjects, prospectively enrolled from 5 centers, underwent 8 brain SWI sequences: 5 different folds of compressed sensitivity encoding acceleration (CS2, CS4, CS6, CS8, and CS10), 2 different folds of sensitivity encoding acceleration (SF2 and SF4), and 1 without acceleration. Images were assessed quantitatively on both the SNR of the red nucleus and its contrast ratio to the CSF and, subjectively, with scoring on overall image quality; visibility of the substantia nigra-red nucleus, basilar artery, and internal cerebral vein; and diagnostic confidence of the cerebral microbleeds and other intracranial diseases. RESULTS Compressed sensitivity encoding showed a promising ability to reduce the acquisition time (from 202 to 41 seconds) of SWI while increasing the acceleration factor from 2 to 10, though at the cost of decreasing the SNR, contrast ratio, and the scores of visual assessments. The visibility of the substantia nigra-red nucleus and internal cerebral vein became unacceptable in CS6 to CS10. The basilar artery was well-distinguished, and diseases including cerebral microbleeds, cavernous angiomas, intracranial gliomas, venous malformations, and subacute hemorrhage were well-diagnosed in all compressed sensitivity encoding sequences. CONCLUSIONS Compressed sensitivity encoding factor 4 is recommended in routine practice. Compressed sensitivity encoding factor 10 is potentially a fast surrogate for distinguishing the basilar artery and detecting susceptibility-related abnormalities (eg, cerebral microbleeds, cavernous angiomas, gliomas, and venous malformation) at the sacrifice of visualization of the substantia nigra-red nucleus and internal cerebral vein.
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Yang K, Yang Y, Kang Y, Liang Z, Wang F, Li Q, Xu J, Tang G, Chen R. The value of radiomic features in chronic obstructive pulmonary disease assessment: a prospective study. Clin Radiol 2022; 77:e466-e472. [DOI: 10.1016/j.crad.2022.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 02/17/2022] [Indexed: 12/17/2022]
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Wang ZJ, Wu HH, Shen JC, Wang J, Wang QJ, Han F, Gui H, Chen R. [Clinical characteristics of patients with obstructive sleep apnea hypopnea syndrome combined with alveolar hypoventilation]. ZHONGHUA YI XUE ZA ZHI 2022; 102:555-562. [PMID: 35196777 DOI: 10.3760/cma.j.cn112137-20210630-01476] [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 evaluate the clinical characteristics of patients with obstructive sleep apnea hypopnea syndrome (OSAHS) combined with alveolar hypoventilation. Methods: This retrospective study included patients who were diagnosed as OSAHS by polysomnography (PSG) and underwent daytime awake transcutaneous carbon dioxide (PtcCO2) monitoring from November 2019 to February 2021 at the Sleep Center of the Second Affiliated Hospital of Soochow University. A total of 177 patients were enrolled in the analysis, including 167 males and 10 females, aged (40±8) years old. Patients with daytime awake PtcCO2>45 mmHg (1 mmHg=0.133 kPa) were diagnosed as daytime alveolar hypoventilation, with which participants were divided into the daytime alveolar hypoventilation group and non-daytime alveolar hypoventilation group. Body mass index (BMI) cut-off value predicting daytime alveolar hypoventilation was calculated and the patients were divided into the high BMI group and low BMI group. The continuous nocturnal PtcCO2 data was available for a subset of 128 patients, and the patients were divided into two groups according the daytime alveolar hypoventilation or not. Across-group differences were compared, respectively. Results: Compared with the non-daytime alveolar hypoventilation group (n=125), the BMI [27.57 (26.55, 30.33) vs 26.60 (25.06, 28.09) kg/m2], Epworth sleepiness score(ESS) score [9.50 (6.25, 12.00) vs 7.00 (4.00, 10.75)], higher oxygen desaturation index (ODI) [38.00 (15.23, 64.93) vs 26.80 (11.30, 44.30) events/h] and percentage of total time with oxygen saturation level<90% (TS90%) [11.24% (1.88%, 32.44%) vs 4.35% (0.72%, 9.87%)] of the daytime alveolar hypoventilation group(n=52) were significantly higher (P<0.05), and lowest arterial oxygen saturation (LSaO2) [74.50% (60.25%, 82.00%) vs 79.00% (73.00%, 84.50%)], mean arterial oxygen saturation (MSaO2) [94.00% (91.00%, 95.00%) vs 95.00% (94.00%, 96.00%)] were significantly lower (P<0.05). The BMI cut-off value for predicting daytime alveolar hypoventilation was 27.04 kg/m2. Of the 177 enrolled patients, 90 were in the high BMI group and 87 were in low group. Compared with the low BMI group, the proportion of daytime sleepiness, the ESS score, the prevalence of hypertension, AHI and daytime awake PtcCO2 in the high BMI group were significantly higher (P<0.05). Among the subset of 128 patients with nocturnal PtcCO2 data available, the BMI, daytime PtcCO2 level, the nocturnal CO2 level and the prevalence of sleep related alveolar hypoventilation in the daytime alveolar hypoventilation group (n=40) were significantly higher than those in the non-daytime alveolar hypoventilation group (n=88) (P<0.05). Conclusions: The OSAHS patients with alveolar hypoventilation have higher BMI and more severe nocturnal hypoxia. OSAHS patients with BMI>27.04 kg/m2 are more likely to develop sleep related alveolar hypoventilation disorder.
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Darmani G, Bergmann T, Butts Pauly K, Caskey C, de Lecea L, Fomenko A, Fouragnan E, Legon W, Murphy K, Nandi T, Phipps M, Pinton G, Ramezanpour H, Sallet J, Yaakub S, Yoo S, Chen R. Non-invasive transcranial ultrasound stimulation for neuromodulation. Clin Neurophysiol 2022; 135:51-73. [DOI: 10.1016/j.clinph.2021.12.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 12/20/2021] [Accepted: 12/22/2021] [Indexed: 12/13/2022]
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Shu M, Chen R, Kadakia D, Lee J, Andres S, Eddib A. The impact of body mass index on perioperative outcomes following robotic sacrocolpopexy. Am J Obstet Gynecol 2022. [DOI: 10.1016/j.ajog.2021.12.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ordinola‐Zapata R, Mansour D, Saavedra F, Staley C, Chen R, Fok A. In vitro efficacy of a non‐instrumentation technique to remove intracanal multispecies biofilm. Int Endod J 2022; 55:495-504. [PMID: 35152445 PMCID: PMC9314631 DOI: 10.1111/iej.13706] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 02/09/2022] [Accepted: 02/09/2022] [Indexed: 11/27/2022]
Abstract
Aim The aim of this study was to assess the efficacy of a non‐instrumentation technique to disinfect root canals infected by a human dental plaque‐derived multispecies biofilm. Methodology Twenty‐two mandibular incisors were accessed, autoclaved and inoculated with dental plaque. The Center for Disease Control biofilm reactor was used to promote contamination of the root canal space. In the conventional technique (control), the specimens were instrumented until size 35/04 and irrigated with 6% NaOCl. In the non‐instrumentation technique, a glide path was established using K‐files size 10–20 and specimens were immediately cleaned with the GentleWave System. Samples were obtained for culture and 16S rRNA gene sequencing. Differences in abundances of genera were evaluated using Kruskal–Wallis test, and differences in alpha diversity were compared using anova. Alpha and beta diversity indices were calculated using mothur. The Shannon and Chao1 indices were used to measure alpha diversity. The Bray–Curtis dissimilarity was used to measure beta diversity. Differences in community composition were evaluated using analysis of similarity with Bonferroni correction for multiple comparisons. Results The total numbers of reads in biological samples ranged from 126 to 45 286. Significantly fewer reads were obtained from samples following cleaning by either method (p < .0001), and significantly fewer reads were obtained in post‐cleaning samples following conventional versus non‐instrumentation cleaning regiment (p = .002). Communities in pre‐treatment samples were similar in both groups; however, significantly greater relative abundances of Streptococcus, Veillonella and Campylobacter were observed following cleaning using non‐instrumentation technique (Kruskal–Wallis p = .009, .033, and .001, respectively). Whilst no significant differences were observed in Shannon alpha diversity, the Chao1 index was significantly lower in post‐cleaning samples. Conclusions Significant shifts in composition were observed following cleaning by using both regimens, but the impact of this change was greater following a conventional cleaning technique.
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Tang Y, Chen R, Feng Y, Li G, Wang L, Li Y, Hong D. POS-243 BRG1 CONTRIBUTIONS TO VASCULAR CALCIFICATION IN CHRONIC KIDNEY DISEASE INVOLVING AUTOPHAGY OF VASCULAR SMOOTH MUSCLE CELLS. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.262] [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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WANG F, Wang W, Chen R, Li P, Yang C, Zhang L. POS-316 EFFECTS OF AMBIENT TEMPERATURE ON HOSPITALIZATION FOR OBSTRUCTIVE NEPHROPATHY IN WUHAN, CHINA: A TIME-SERIES ANALYSIS. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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