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Jiang AC, Indaram M. Unilateral progressive keratoconus associated with ipsilateral craniofacial fibrous dysplasia treated with corneal cross-linking. Am J Ophthalmol Case Rep 2024; 33:101984. [PMID: 38292881 PMCID: PMC10827385 DOI: 10.1016/j.ajoc.2023.101984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 11/21/2023] [Accepted: 12/20/2023] [Indexed: 02/01/2024] Open
Abstract
Purpose The purpose of this study is to describe a case of unilateral keratoconus associated with ipsilateral craniofacial fibrous dysplasia and its subsequent management with corneal collagen cross-linking. Observations This is an interventional case report of a 16-year-old male with a history of polyostotic fibrous dysplasia of the left frontal bone and orbital roof status post partial resection six years prior who presented to the pediatric ophthalmology clinic with progressively blurry vision in the left eye. Refraction in this eye revealed an increase in cylinder by > 3D from his last refraction two years prior. Pentacam corneal tomography confirmed the diagnosis of keratoconus in the left eye. The patient underwent corneal collagen cross-linking in the affected eye. Postoperatively, he experienced marked improvement in corrected visual acuity with scleral contact lenses and maintained stable astigmatism and keratometry values on Pentacam corneal tomography at his most recent visit 12 months postoperatively. Conclusions While it is otherwise felt to be a bilateral disease, unilateral keratoconus may present in the context of ipsilateral orbital pathology. Corneal collagen cross-linking may be used to successfully prevent keratoconus progression in the setting of stable orbital pathology.
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Affiliation(s)
- Alice C. Jiang
- University of California, San Francisco, Department of Ophthalmology, San Francisco, CA, USA
| | - Maanasa Indaram
- University of California, San Francisco, Department of Ophthalmology, San Francisco, CA, USA
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Jiang AC, Alabi RO, Haq Z, Stewart JM. Ischemic cranial nerve 6 palsy and lipemia retinalis in a patient with hypertriglyceridemia. Can J Ophthalmol 2022; 57:e179-e181. [DOI: 10.1016/j.jcjo.2022.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 11/12/2021] [Accepted: 01/06/2022] [Indexed: 11/25/2022]
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Jiang AC, Buckingham L, Bishehsari F, Sutherland S, Ma K, Melson JE. Correlation of LINE-1 Hypomethylation With Size and Pathologic Extent of Dysplasia in Colorectal Tubular Adenomas. Clin Transl Gastroenterol 2021; 12:e00369. [PMID: 34060495 PMCID: PMC8162511 DOI: 10.14309/ctg.0000000000000369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 04/28/2021] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Conventional adenomas (tubular adenoma [TA] or tubulovillous adenoma) and sessile serrated lesions (SSLs) are neoplastic precancerous lesions frequently detected in patients undergoing average risk screening colonoscopy and polyp surveillance. Metachronous risk stratification of adenomas is currently limited to histologic features and size of polyps. We report long interspersed nucleotide element-1 (LINE-1) methylation levels in SSL in comparison to TA and the impact of TA size and presence of high-grade dysplasia (HGD) on LINE-1 methylation. METHODS LINE-1 methylation was assessed by pyrosequencing of bisulfite-converted DNA. We compared LINE-1 methylation between TA and SSL, among varying sizes of TA, and between TA with HGD and low-grade dysplasia (LGD). RESULTS LINE-1 methylation declined with increasing polyp size in TA when comparing those <5 mm (72.31 ± 6.11), 5 to <10 mm (67.50 ± 7.00), and ≥10 mm (66.75 ± 11.89). There were lower LINE-1 methylation levels in TA with LGD (n = 119) compared with SSLs (n = 29) (69.11 ± 8.62 vs 81.41 ± 2.43, P < 0.001). TA containing HGD (n = 26) had lower LINE-1 methylation levels than those with LGD (n = 119) (59.86 ± 7.93 vs 69.11 ± 8.62, P < 0.001). DISCUSSION HGD and increasing size of TA/tubulovillous adenoma were associated with lower LINE-1 methylation. This supports a hypothesis that LINE-1 hypomethylation in TAs indicates advancement along the CRC tumorigenesis pathway. Lower LINE-1 methylation and greater variance of global DNA methylation was seen in TA compared with SSL. LINE-1 methylation in adenomas correlates with polyp size and degree of dysplasia and deserves further study as a predictor of metachronous colorectal cancer risk.
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Affiliation(s)
- Alice C. Jiang
- Division of Digestive Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Lela Buckingham
- Department of Pathology, Rush University Medical Center, Chicago, Illinois, USA
| | - Faraz Bishehsari
- Division of Digestive Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | | | - Karen Ma
- Division of Digestive Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Joshua E. Melson
- Division of Digestive Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
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Abstract
Constipation and fecal incontinence are commonly encountered complaints in the gastrointestinal clinic. Assessment of anorectal function includes comprehensive history, rectal examination, and prospective stool diary or electronic App diary that accurately captures bowel symptoms, evaluation of severity, and quality of life of measure. Evaluation of a suspected patient with dyssynergic constipation includes anorectal manometry, balloon expulsion test, and defecography. Investigation of a suspected patient with fecal incontinence includes high-resolution anorectal manometry; anal ultrasound or MRI; and neurophysiology tests, such as translumbosacral anorectal magnetic stimulation or pudendal nerve latency. This article provides an approach to the assessment of anorectal function.
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Affiliation(s)
- Alice C Jiang
- Division of Gastroenterology, Department of Internal Medicine, Rush University Medical Center, 600 S Paulina St, Chicago, IL 60612, USA
| | - Ami Panara
- Division of Gastroenterology, Department of Internal Medicine, University of Miami Leonard M. Miller School of Medicine, 1601 NW 12th Ave, Miami, FL, USA
| | - Yun Yan
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Augusta University, Augusta, GA, USA
| | - Satish S C Rao
- Division of Gastroenterology and Hepatology, Augusta University Medical Center, 1120 15th Street, AD 2226, Augusta, GA 30912, USA.
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Ehlers JP, Jiang AC, Boss JD, Hu M, Figueiredo N, Babiuch A, Talcott K, Sharma S, Hach J, Le T, Rogozinski A, Lunasco L, Reese JL, Srivastava SK. Quantitative Ultra-Widefield Angiography and Diabetic Retinopathy Severity: An Assessment of Panretinal Leakage Index, Ischemic Index and Microaneurysm Count. Ophthalmology 2019; 126:1527-1532. [PMID: 31383482 PMCID: PMC6810836 DOI: 10.1016/j.ophtha.2019.05.034] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/11/2019] [Accepted: 05/24/2019] [Indexed: 01/01/2023] Open
Abstract
PURPOSE To investigate the relationship between the diabetic retinopathy (DR) severity and quantitative ultra-widefield angiographic metrics, including leakage index, ischemic index, and microaneurysm count. DESIGN Retrospective image analysis study. METHODS Eyes with DR that had undergone ultra-widefield fluorescein angiography (UWFA) with associated color photography were identified. All eyes were laser-naive and had not received any intravitreal pharmacotherapy within 6 months of UWFA. Each eye was graded for DR severity. Quantitative angiographic parameters were evaluated with a semiautomated analysis platform with expert reader correction, as needed. Angiographic parameters included panretinal leakage index, ischemic index, and microaneurysm count. Clinical characteristics analyzed included age, gender, race, hemoglobin A1C level, hypertension, systolic blood pressure, diastolic blood pressure, and smoking history. MAIN OUTCOME MEASURES Association of DR severity with panretinal leakage index, ischemic index, and microaneurysm count. RESULTS Three hundred thirty-nine eyes were included with mean age of 62±13 years. Forty-two percent of eyes were from women and 57.5% were from men. Distribution of DR severity was as follows: mild NPDR in 11.2%, moderate NPDR in 23.9%, severe NPDR in 40.1%, and PDR with 24.8%. Panretinal leakage index [mild NPDR (mean = 0.51%), moderate NPDR mean = 1.20%, severe NPDR (mean = 2.75%), and PDR (mean = 5.84%); P<2×10-16], panretinal ischemic index [mild NPDR (mean = 0.95%, moderate NPDR (mean = 1.37%), severe NPDR (mean = 2.80%), and PDR (mean = 9.53%); P<2×10-16], and panretinal microaneurysm count [mild NPDR (mean = 36), moderate NPDR (mean = 129), severe NPDR (mean = 203), and PDR (mean = 254); P<5×10-7] were strongly associated with DR severity. Multivariate analysis demonstrated that ischemic index and leakage index were the parameters associated most strongly with level of DR severity. CONCLUSIONS Panretinal leakage index, panretinal ischemic index, and panretinal microaneurysm count are associated with DR severity. Additional research is needed to understand the clinical implications of these parameters related to progression risk, prognosis, and implications for therapeutic response.
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Affiliation(s)
- Justis P Ehlers
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio.
| | - Alice C Jiang
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; School of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Joseph D Boss
- Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Ming Hu
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | - Natalia Figueiredo
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Amy Babiuch
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Katherine Talcott
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Sumit Sharma
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Jenna Hach
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Thuy Le
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Alison Rogozinski
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Leina Lunasco
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Jamie L Reese
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Sunil K Srivastava
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
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Jiang AC, Srivastava SK, Hu M, Figueiredo N, Babiuch A, Boss JD, Reese JL, Ehlers JP. Quantitative Ultra-Widefield Angiographic Features and Associations with Diabetic Macular Edema. Ophthalmol Retina 2019; 4:49-56. [PMID: 31690541 DOI: 10.1016/j.oret.2019.08.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 08/14/2019] [Accepted: 08/20/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE To examine the relationship between diabetic macular edema (DME) and quantitative ultra-widefield fluorescein angiography (UWFA) metrics of ischemia, leakage, and microaneurysms. DESIGN Retrospective image analysis study. PARTICIPANTS Eyes with diabetic retinopathy that had undergone spectral-domain OCT, UWFA, and ultra-widefield fundus photography. METHODS OCT images were analyzed to determine the presence or absence of DME, central subfield thickness (CST), and subretinal fluid. Using a semiautomated analysis platform, UWFA images were segmented for ischemia, leakage, and microaneurysms with manual correction as needed. Clinical variables, including age, gender, race, hemoglobin A1C levels, blood pressure, cholesterol levels, use of blood thinners, smoking status, and lens status also were evaluated. MAIN OUTCOME MEASURES Factors associated with the presence and severity of DME. RESULTS A total of 304 eyes (156 right eyes, 148 left eyes) from 178 diabetic patients were analyzed in the study. Panretinal leakage index, microaneurysm count, and ischemic index were not significantly different between eyes with and without DME in univariate assessment. Zonal assessments of macular microaneurysms and macular leakage index values revealed that eyes with DME showed a significantly higher microaneurysm count (P = 0.001) and leakage index (P < 0.0001) in the posterior pole compared with eyes without DME. Severity of macular thickening (i.e., CST) was associated significantly with macular leakage index and posterior pole microaneurysm count (P = 0.0002 and P = 0.03, respectively). In addition to posterior pole leakage index and microaneurysm count, DME was associated with older age (P < 0.01), higher systolic blood pressure (P < 0.001), and white race (P = 0.03). Multivariate assessment confirmed the independent association of presence of DME with macular leakage index and macular microaneurysm count (P < 0.01). CONCLUSIONS Quantitative measures of leakage index and microaneurysm count in the posterior pole on UWFA images were associated with the presence and severity of DME. Panretinal analyses were not linked to DME as strongly. Additional research is needed to determine the role of quantitative UWFA in predicting DME development and characterizing patient prognosis.
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Affiliation(s)
- Alice C Jiang
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; School of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Sunil K Srivastava
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Ming Hu
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | - Natalia Figueiredo
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Amy Babiuch
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Joseph D Boss
- Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Jamie L Reese
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio
| | - Justis P Ehlers
- The Tony and Leona Campane Center for Excellence in Image-Guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio; Vitreoretinal Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio.
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Yu T, Li J, Wang K, Ge Y, Jiang AC, Duan LP, Wang ZY. Clinical characteristics of neurogenic dysphagia in adult patients with Chiari malformation type I. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:315-321. [PMID: 28416844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate changes of swallowing function and associated symptoms in Chiari malformation typeI (CMI) patients with and without dysphagia by the analysis of their clinical and high-resolution manometry (HRM) parameters. METHODS A total of 42 patients diagnosed with symptomatic CMI without atlantoaxial dislocations which were confirmed by clinical manifestations and magnetic resonance imaging (MRI) findings between January 2010 and July 2015 at Peking University Third Hospital were included in this study. Twenty patients had a history of various dysphagia symptoms, or reported symptoms of choking, coughing after eating or drinking, while the other 22 patients denied symptoms of dysphagia. The data collected from the medical records of these patients included the patient's age, sex, date of diagnosis, duration of illness, symptoms, results of MRI and HRM, and date of surgery. RESULTS (1) Dysphagia group had 14 female patients, and no-dysphagia group had 8 female patients. Dysphagia usually occurred in female patients, and in addition to dysphagia, we recorded other symptoms and signs in the CMI patients, including numbness, hypoesthesia, limb weakness, neck pain, muscle atrophy, ataxia, hoarseness, symptoms caused by posterior cranial nerve damage, pharyngeal reflex, uvula deviation, and pyramidal signs. A higher percentage of the CMI patients with dysphagia (15/20) had symptoms of posterior cranial nerve damage compared with the control group (5/22; P=0.01). (2)HRM showed a significant difference in upper esophageal sphincter (UES) relax ratio measurement (75.3% vs. 63.1%, P=0.023) and UES proximal margin (17.2 cm vs. 15.7 cm, P=0.005) between the two groups. (3) The percentage of syringomyelia affecting the bulbar or upper cervical region on MRI was significantly higher in the dysphagia group (17/20 vs. 7/22, P=0.001). CONCLUSION CMI was usually accompanied by symptoms caused by posterior cranial nerve damage, ataxia, and positive pyramidal signs. Location of the syringomyelia affecting specifically the bulbar or upper cervical region was associated with dysphagia in CMI patients. These findings suggest that the mechanism of dysphagia in CMI may be due to a dysfunction in the neurological pathway of pharyngeal muscle movement. Dysphagia etiology work-up should include CMI in the differential diagnosis.
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Affiliation(s)
- T Yu
- Department of Neurosurgery, Peking University Third Hospital, Beijing 100191, China
| | - J Li
- Department of Gastroenterology and Hepatology,Peking University Third Hospital, Beijing 100191, China
| | - K Wang
- Department of Gastroenterology and Hepatology,Peking University Third Hospital, Beijing 100191, China
| | - Y Ge
- Department of Gastroenterology and Hepatology,Peking University Third Hospital, Beijing 100191, China
| | - A C Jiang
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL 60612, USA
| | - L P Duan
- Department of Gastroenterology and Hepatology,Peking University Third Hospital, Beijing 100191, China
| | - Z Y Wang
- Department of Neurosurgery, Peking University Third Hospital, Beijing 100191, China
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Chen K, Chai L, Li H, Zhang Y, Xie HM, Shang J, Tian W, Yang P, Jiang AC. Effect of bovine lactoferrin from iron-fortified formulas on diarrhea and respiratory tract infections of weaned infants in a randomized controlled trial. Nutrition 2016; 32:222-7. [DOI: 10.1016/j.nut.2015.08.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 08/09/2015] [Accepted: 08/13/2015] [Indexed: 01/28/2023]
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Wang TT, Li YS, Jiang AC, Lu MX, Liu XJ, Yu XY. Suppression of Chlorantraniliprole Sorption on Biochar in Soil-Biochar Systems. Bull Environ Contam Toxicol 2015; 95:401-406. [PMID: 25904088 DOI: 10.1007/s00128-015-1541-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 04/07/2015] [Indexed: 06/04/2023]
Abstract
The sorption behavior of chlorantraniliprole (CAP) by biochar and effect of soil extracts on sorptivity in soil-biochar systems were examined. The results showed that biochar amendment could enhance the sorption of CAP in soils. The values of K F increased significantly when the soils were amended with 0.5 % BC850, which were from 1.54 to 196.5. The indigenous sorptivity of biochar was suppressed after it was applied to the soils. The degree of biochar sorptivity attenuation in different soil-biochar systems varied with the properties of soil water soluble matters. Sorption of CAP by biochar from the five soil extracts was found to be lower than that from a CaCl2 solution. The calculated K d values at C w of 0.01 mg kg(-1) for biochar sorption of CAP from CaCl2 solution were 21.4-26.6 times of that from soil extracts. Aging of biochar in soil extract reduced CAP sorption by up to 85 %.
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Affiliation(s)
- Ting-Ting Wang
- Pesticide Biology and Ecology Research Center, Jiangsu Academy of Agricultural Sciences, Nanjing, 20014, China
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Liu H, Zhu W, Jiang AC, Sprecher AJ, Zhou X. Femtosecond laser lenticule transplantation in rabbit cornea: experimental study. J Refract Surg 2013; 28:907-11. [PMID: 23231741 DOI: 10.3928/1081597x-20121115-05] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Accepted: 08/31/2012] [Indexed: 11/20/2022]
Abstract
PURPOSE To evaluate the feasibility of femtosecond laser-induced lenticule transplantation in the rabbit cornea and to observe the relative histologic characteristics of corneal tissue and nerve repair after transplantation. METHODS Eight healthy, purebred, New Zealand white rabbits underwent femtosecond laser small-incision lenticule extraction (SMILE) surgery in the right eye. Lenticules were inserted into a femtosecond laser-created corneal stromal pocket in the left eye, which was defined as femtosecond laser corneal lenticule transplantation. Postoperative observation and examination were completed to evaluate the surgery. RESULTS In the early postoperative period, inflammation of the cornea was noted, tissue around the lenticule was edematous, and cells were activated. Tissue edema remained at postoperative day 10. By 1 month, edema had resolved, activated cells gradually became quiescent, and nerve fiber regeneration was observed. By 3 months, the lenticule integrated into the recipient cornea, extracellular matrix gradually cleared, and thicker nerve fibers were noted. By 6 months postoperative, morphology and distribution of the corneal stromal fibers were close to normal, and the number of nerve fibers was reduced. CONCLUSIONS Femtosecond laser corneal lenticule transplantation in rabbits is feasible, as the lenticule was shown to thrive and integrate with the recipient stroma. Nerve regeneration begins after 1 month.
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Affiliation(s)
- Huiying Liu
- Department of Ophthalmology & Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
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Ye X, Ren H, Zhang M, Sun Z, Jiang AC, Xu G. ERK1/2 signaling pathway in the release of VEGF from Müller cells in diabetes. Invest Ophthalmol Vis Sci 2012; 53:3481-9. [PMID: 22511624 DOI: 10.1167/iovs.11-9076] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Diabetic retinopathy (DR) is one of the most serious complications of diabetes and has become a major blinding eye disease, but its treatment remains unsatisfactory. The ERK1/2 signaling pathway has been shown to participate in regulating secretion of VEGF in DR from our previous studies. The role of VEGF in the development of DR provides a target for treatment. Our present research focuses on Müller cells, a major source of VEGF secretion, to investigate the role of ERK1/2 signaling pathway on regulation of VEGF release in diabetes. METHODS Immunofluorescence was used to observe the ERK1/2 phosphorylation activity on early diabetic rat retinal Müller cells. Müller cells were stimulated by high glucose in vitro. Western blot and immunohistochemistry were used to determine ERK1/2 signaling pathway expression and phosphorylation. AP-1 DNA binding activity status was monitored by electrophoretic mobility shift assay (EMSA). ELISA and PCR monitored VEGF secretion. Inhibition of ERK1/2 phosphorylation with U0126 was observed for changes in VEGF secretion. RESULTS Phos-ERK1/2 was expressed on Müller cells early in diabetes. In vitro high glucose stimulation of Müller cells increased VEGF secretion with a peak at 24 hours. An ERK1/2 specific inhibitor, U0126, stopped the phosphorylation of ERK1/2, lowered AP-1 DNA binding activity, and reduced Müller cells secretion of VEGF under high glucose conditions. CONCLUSIONS ERK1/2 signaling pathway has some role in regulating Müller cells secretion of VEGF in DR. Targeting the ERK1/2 signaling pathway in Müller cells through intervention of the upstream signaling pathway or nuclear transcription factors of VEGF secretion could be a type of anti-VEGF treatment for DR.
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Affiliation(s)
- Xiaofeng Ye
- EENT Hospital, Eye Institute, Fudan University, Shanghai, China
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12
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Ye X, Xu G, Chang Q, Fan J, Sun Z, Qin Y, Jiang AC. ERK1/2 Signaling Pathways Involved in VEGF Release in Diabetic Rat Retina. ACTA ACUST UNITED AC 2010; 51:5226-33. [PMID: 20445124 DOI: 10.1167/iovs.09-4899] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
| | - Gezhi Xu
- From the EENT Hospital, Eye Institute, the 2Institute of Brain Science, Fudan University, Shanghai, China; and
| | - Qing Chang
- From the EENT Hospital, Eye Institute, the 2Institute of Brain Science, Fudan University, Shanghai, China; and
| | | | | | - Yaowu Qin
- From the EENT Hospital, Eye Institute,
| | - Alice C. Jiang
- the Department of Surgery, University of Wisconsin, Madison, Wisconsin
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Li L, Jiang AC, Dong P, Wang H, Xu W, Xu C. MDR1/P-gp and VEGF synergistically enhance the invasion of Hep-2 cells with multidrug resistance induced by taxol. Ann Surg Oncol 2009; 16:1421-8. [PMID: 19247716 DOI: 10.1245/s10434-009-0395-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2008] [Revised: 02/03/2009] [Accepted: 02/04/2009] [Indexed: 01/13/2023]
Abstract
BACKGROUND Tumor invasion/metastasis and multidrug resistance (MDR) are the main causes of treatment failure and high mortality in all kinds of cancer patients. The relationship between the two factors is still unclear. The aim of this study is to investigate the association between MDR and invasion, especially the role of multidrug resistance 1/P-glycoprotein (MDR1/P-gp) and vascular endothelial growth factor (VEGF) during the invasion. METHODS Multidrug resistance 1 (MDR1) and VEGF receptor 2 (VEGFR-2) were detected with real-time quantitative reverse-transcription polymerase chain reaction (RT-PCR) and Western blotting at the levels of messenger RNA (mRNA) and protein, respectively. RNA interference was applied to inhibit the expression of MDR1. The invasive assays were performed with the CHEMICON cell invasion assay kit. RESULTS The MDR cell line induced by Taxol (Hep-2T cell) was more invasive than its parent cell line (Hep-2 cell), which was at least in part mediated through the overexpressed MDR1/P-pg. MDR1-targeted RNA interference could effectively inhibit the expression of MDR1 and obviously decrease the invasive ability. Synergistic enhancing effects existed between MDR1/P-gp and VEGF on the invasion of Hep-2T cells. The expression of VEGFR-2 was elevated in Hep-2T cells. SU1498 could significantly decrease the invasion of Hep-2T cells. MDR1-targeted RNA interference and SU1498 had synergistic decreasing effect on the invasion of Hep-2T cells. CONCLUSIONS MDR1/P-pg may be a risk predictor for the invasion of laryngeal cancer. MDR1 knock down and VEGFR-2 inhibitor may be two promising treatment regiments for advanced laryngeal carcinoma patients with MDR and invasion/metastasis.
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Affiliation(s)
- Li Li
- Department of Otolaryngology, Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, China
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Wu W, Yan W, MacCallum JK, Tu Y, Jiang AC, Yang Y, Xiao T, Li J, Wang Q, Qu J. Primary treatment of acute dacryocystitis by endoscopic dacryocystorhinostomy with silicone intubation guided by a soft probe. Ophthalmology 2009; 116:116-22. [PMID: 19118702 DOI: 10.1016/j.ophtha.2008.09.041] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2008] [Revised: 09/21/2008] [Accepted: 09/24/2008] [Indexed: 10/21/2022] Open
Abstract
PURPOSE To investigate the suitability of cold steel endonasal endoscopic dacryocystorhinostomy (EES-DCR) with circular bicanalicular intubation with silicone tubes (CBIST) guided by a soft probe for the primary treatment of acute purulent dacryocystitis (APD). DESIGN Prospective, randomized, interventional case series. PARTICIPANTS Seventy-two patients (59 females, 13 males) with a median presenting age of 55+/-12 years (range, 28-71 years). METHODS Eighty-four patients with unilateral APD were equally and randomly divided into 2 groups. Cold steel EES-DCR was performed after the lacrimal abscess formation, and external dacryocystorhinostomy (E-DCR) was performed 1 to 2 weeks after resolution of the acute inflammation. In both groups, CBIST guided by a soft probe was performed and the silicone tubes were kept in the lacrimal passages for 3 months. Postoperative follow-up ranged from 12 to 24 months. Outcomes were compared between both groups, considering resolution time for external acute inflammation, success rate of free lacrimal passage reconstruction, and lack of complications as indicators of treatment suitability. MAIN OUTCOME MEASURES Time for resolution of the external acute inflammation, success rate of free lacrimal passage reconstruction, and complications. RESULTS In this study, complete postoperative data were acquired from 40 patients in the EES-DCR group and from 32 patients in the E-DCR group, and the outcomes were compared. Acute inflammation resolved more quickly in the EES-DCR group than in the E-DCR group (P<0.05). Ostium patency at 12 months after silicone tube removal was achieved in significantly more patients in the EES-DCR group (36/40 [90%]) than in the E-DCR group (21/32 [65.7%]; P<0.01). In the EES-DCR group, lacrimal passage reconstruction failed because of intranasal ostial closure in 3 patients and because of common canaliculus obstruction in 1 patient. In the E-DCR group, lacrimal passage reconstruction failed because of intranasal ostial closure in 3 patients, lacrimal sac fibrosis, granulation, or both in 6 patients, and common canaliculus obstruction in 2 patients. Other than the slight laceration of the inferior puncta, no significant complications arose from the treatments. CONCLUSIONS Cold steel EES-DCR with CBIST guided by a soft probe is a promising alternative for the primary treatment of APD with abscess formation. FINANCIAL DISCLOSURE(S) The authors have no proprietary or commercial interest in any materials discussed in this article.
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Affiliation(s)
- Wencan Wu
- Eye Hospital of Wenzhou Medical College, Wenzhou, Peoples' Republic of China.
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Li L, Jiang AC, Dong P, Wan Y, Yu ZW. The characteristics of Hep-2 cell with multiple drug resistance induced by Taxol. Otolaryngol Head Neck Surg 2007; 137:659-64. [PMID: 17903587 DOI: 10.1016/j.otohns.2007.04.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2006] [Revised: 04/04/2007] [Accepted: 04/25/2007] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To investigate the characteristics of Hep-2 cell with multidrug resistance (MDR) induced by Taxol. STUDY DESIGN Hep-2 cells were exposed in stepwise escalating concentration of Taxol to develop the resistant cell line-Hep-2T. Cell cycle distribution, apoptosis, and rhodamine accumulation were studied through flow cytometry. The MDR1 and MRP1 genes were detected through real-time quantitative RT-PCR, and the corresponding proteins were detected through Western blotting. RESULTS The drug resistance of Hep-2T cells to Taxol, doxorubicin, gemcitabine, 5-FU, and cisplatin all increased. The percentage of G0/G1 phase and the antiapoptosis ability increased significantly compared with Hep-2 cells. Both MDR1 and MRP1 also increased at gene and protein level, though MDR1 was more prominent. CONCLUSION More emphasis should be laid on MDR1/Pgp, the non-Pgp substrate chemotherapeutic agents, and the changes of cell cycle distribution to prevent MDR induced by Taxol. SIGNIFICANCE These findings may provide theoretical support for the reverse of MDR.
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Affiliation(s)
- Li Li
- Department of Otolaryngology, Shanghai Jiao Tong University affiliated First People's Hospital, China
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