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Takashima S, Martin ML, Jansen SA, Fu Y, Bos J, Chandra D, O'Connor MH, Mertelsmann AM, Vinci P, Kuttiyara J, Devlin SM, Middendorp S, Calafiore M, Egorova A, Kleppe M, Lo Y, Shroyer NF, Cheng EH, Levine RL, Liu C, Kolesnick R, Lindemans CA, Hanash AM. T cell-derived interferon-γ programs stem cell death in immune-mediated intestinal damage. Sci Immunol 2020; 4:4/42/eaay8556. [PMID: 31811055 DOI: 10.1126/sciimmunol.aay8556] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/06/2019] [Indexed: 12/15/2022]
Abstract
Despite the importance of intestinal stem cells (ISCs) for epithelial maintenance, there is limited understanding of how immune-mediated damage affects ISCs and their niche. We found that stem cell compartment injury is a shared feature of both alloreactive and autoreactive intestinal immunopathology, reducing ISCs and impairing their recovery in T cell-mediated injury models. Although imaging revealed few T cells near the stem cell compartment in healthy mice, donor T cells infiltrating the intestinal mucosa after allogeneic bone marrow transplantation (BMT) primarily localized to the crypt region lamina propria. Further modeling with ex vivo epithelial cultures indicated ISC depletion and impaired human as well as murine organoid survival upon coculture with activated T cells, and screening of effector pathways identified interferon-γ (IFNγ) as a principal mediator of ISC compartment damage. IFNγ induced JAK1- and STAT1-dependent toxicity, initiating a proapoptotic gene expression program and stem cell death. BMT with IFNγ-deficient donor T cells, with recipients lacking the IFNγ receptor (IFNγR) specifically in the intestinal epithelium, and with pharmacologic inhibition of JAK signaling all resulted in protection of the stem cell compartment. In addition, epithelial cultures with Paneth cell-deficient organoids, IFNγR-deficient Paneth cells, IFNγR-deficient ISCs, and purified stem cell colonies all indicated direct targeting of the ISCs that was not dependent on injury to the Paneth cell niche. Dysregulated T cell activation and IFNγ production are thus potent mediators of ISC injury, and blockade of JAK/STAT signaling within target tissue stem cells can prevent this T cell-mediated pathology.
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Affiliation(s)
- S Takashima
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - M L Martin
- Department of Molecular Pharmacology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - S A Jansen
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Division of Pediatrics, Regenerative Medicine Center, University Medical Center Utrecht, Utrecht University, 3508 AB Utrecht, Netherlands
| | - Y Fu
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - J Bos
- Division of Pediatrics, Regenerative Medicine Center, University Medical Center Utrecht, Utrecht University, 3508 AB Utrecht, Netherlands
| | - D Chandra
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - M H O'Connor
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - A M Mertelsmann
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - P Vinci
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - J Kuttiyara
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - S M Devlin
- Department of Biostatistics and Epidemiology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - S Middendorp
- Division of Pediatrics, Regenerative Medicine Center, University Medical Center Utrecht, Utrecht University, 3508 AB Utrecht, Netherlands
| | - M Calafiore
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - A Egorova
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - M Kleppe
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Y Lo
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - N F Shroyer
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - E H Cheng
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, Cornell University, New York, NY 10065, USA
| | - R L Levine
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA
| | - C Liu
- Department of Pathology & Laboratory Medicine, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
| | - R Kolesnick
- Department of Molecular Pharmacology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - C A Lindemans
- Division of Pediatrics, Regenerative Medicine Center, University Medical Center Utrecht, Utrecht University, 3508 AB Utrecht, Netherlands.,Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, Netherlands
| | - A M Hanash
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA. .,Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA
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Wang T, Lin T, Ni Y, Lo Y. 0670 The Outcome Of Cpap Titration Under Drug-induced Sleep Endoscopy: A Randomized Controlled Crossover Trial. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
The titration pressure of continuous positive airway pressure (CPAP) is an important issue for patients with obstructive sleep apnea (OSA). The aim of this study was to understand the impact of drug-induced sleep endoscopy (DISE)-guided CPAP pressure and doctor-guided CPAP pressure on patients with OSA.
Methods
In this randomized controlled single-blinded crossover trial, we compared the effects of 1 month CPAP treatment on patients with OSA. Twenty-four patients with OSA were recruited and completed this study. They all underwent polysomnography, DISE-guided CPAP titration and accommodation. Doctor-guided CPAP pressure was determined before DISE. Patients were randomly assigned to receive DISE-guided or Doctor-guided CPAP pressure treatment for 1 month. Then, they switched to another CPAP pressure for another 1 month. Epworth sleepiness scale (ESS) will be recorded at baseline, 1 month and 2 months.
Results
The DISE-guided CPAP pressure and Doctor-guided CPAP pressure had no significant difference (13.9±0.7 cm H2O vs 13.5±0.5 cm H2O; P=0.92). In addition, residual AHI and compliance were also no significant difference between two groups. The ESS was significantly improved from baseline to 1 month CPAP treatment in both groups. Epiglottis (anterior-posterior collapse) was significant associated with AHI (P < 0.001, by Spearman correlation). Both Epiglottis (anterior-posterior collapse) and tongue base collapse were significant associated with 95% CPAP pressure (P = 0.031 and 0.038). After multivariate regression analyses, epiglottis (anterior-posterior collapse) is the independent factor for 95% CPAP pressure.
Conclusion
The DISE-guided CPAP pressure and Doctor-guided CPAP pressure had no significant difference on the improvement of ESS. Epiglottis (anterior-posterior collapse) is the independent factor for AHI and 95% CPAP pressure.
Support
Chang Gung Memorial Hospital and Chang Gung University
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Affiliation(s)
- T Wang
- Chang Gung Memorial Hospital, Taipei, TAIWAN
| | - T Lin
- Chang Gung Memorial Hospital, Taipei, TAIWAN
| | - Y Ni
- Department of Chest Medicine, Buddhist Tzu Chi General Hospital, Taichung Branch, Taichung, Taiwan, Taichung, TAIWAN
| | - Y Lo
- Chang Gung Memorial Hospital, Taipei, TAIWAN
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3
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Lo Y, Tsai T. Clinical experience of ixekizumab in the treatment of patients with history of chronic erythrodermic psoriasis who failed secukinumab: a case series. Br J Dermatol 2019; 181:1106-1107. [DOI: 10.1111/bjd.18174] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Y. Lo
- Department of Dermatology Cathay General Hospital No. 280, Sec. 4, Renai Road, Taipei, Taiwan Taipei 106 Taiwan
| | - T.‐F. Tsai
- Department of Dermatology National Taiwan University Hospital 7, Chung‐Shan South Road Taipei 100 Taiwan
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Yung S, Yu J, Chan C, Lo Y, Tai A, Chau M, Chan D. SAT-121 GUT-DERIVED LIPOPOLYSACCHARIDE CONTRIBUTES TO PATHOGENESIS OF LUPUS NEPHRITIS. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.149] [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] [Indexed: 10/26/2022] Open
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Kulkarni A, Gulesserian T, Lorenzo JMMD, Haroonian Y, Ngyuyen M, Lo Y, Wang D, Hsu D, Kaskel F, Mahgerefteh J. Left ventricular remodelling and vascular adaptive changes in adolescents with obesity. Pediatr Obes 2018; 13:541-549. [PMID: 29569422 DOI: 10.1111/ijpo.12278] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 01/16/2018] [Accepted: 01/25/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND The aim of this study was to determine the effects of obesity on myocardial mechanics and ventriculo-arterial coupling (V-A) in children. METHODS Strain parameters, stroke volume, arterial elastance, left ventricular (LV) elastance and V-A were compared after adjusting for age and hypertension and after multivariate sub-group analysis between patients with and without obesity. RESULTS Among 123 retrospectively enrolled subjects, 6-21 years age, 79.7% males, 52% were obese. Median (range) Body Mass Index Z score was +2.35 (1.67-4.43) for obese and +0.68 (-2.48-1.63) for non-obese. Subjects with obesity had higher LV mass indexed2.7 (LVMI2.7 ) compared with non-obese (P < 0.001). Lower global longitudinal strain (GLS) (P = 0.012), global circumferential strain (GCS) (P = 0.004), average longitudinal strain rate (P = 0.002) and average circumferential strain rate (P < 0.001) were seen in subjects with obesity; no difference was noted in arterial elastance, LV end systolic elastance and V-A. Increased LVMI2.7 , decreased GLS, GCS, average longitudinal strain rate, average circumferential strain rate and maintained V-A were noted in the multivariate analysis between subgroups. CONCLUSIONS Obesity causes alterations in myocardial mechanics with preserved V-A in children. These findings may aid intervention in preventing the long-term cadiovascular effects of obesity.
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Affiliation(s)
- A Kulkarni
- Division of Pediatric Cardiology, Icahn School of Medicine, Bronx Lebanon Hospital Center, Bronx, USA
| | - T Gulesserian
- Department of Pediatric and Adolescent Medicine, Pediatric Heart Center of Vienna, Medical University of Vienna, Vienna, Austria
| | - J M M D Lorenzo
- Division of Pediatric Cardiology, Children's Hospital at Montefiore, New York, USA
| | - Y Haroonian
- Division of Pediatric Cardiology, Children's Hospital at Montefiore, New York, USA
| | - M Ngyuyen
- Division of Pediatric Cardiology, Children's Hospital at Montefiore, New York, USA
| | - Y Lo
- Albert Einstein College of Medicine, New York, USA
| | - D Wang
- Albert Einstein College of Medicine, New York, USA
| | - D Hsu
- Division of Pediatric Cardiology, Children's Hospital at Montefiore, New York, USA
| | - F Kaskel
- Division of Pediatric Nephrology, Children's Hospital at Montefiore, New York, USA
| | - J Mahgerefteh
- Division of Pediatric Cardiology, Children's Hospital at Montefiore, New York, USA
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Lo Y, Li C, Chen H, Chiang C, Huang C, Chen H, Liu F. 620 Galectin-8 is upregulated in psoriasis and promotes IL-17A-induced keratinocyte proliferation by modulating mitosis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.629] [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] [Indexed: 11/30/2022]
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7
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Lam A, Boenerjous SA, Lo Y, Abzug JM, Kurian J, Liszewski MC, Sanderson DE, Scholnick JM, Taragin BH, Gomez JA, Otsuka NY, Hanstein R. Diagnosing slipped capital femoral epiphysis amongst various medical specialists. J Child Orthop 2018; 12:160-166. [PMID: 29707055 PMCID: PMC5902750 DOI: 10.1302/1863-2548.12.170200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE To evaluate sensitivity, specificity and accuracy of a radiographic slipped capital femoral epiphysis (SCFE)-diagnosis among medical specialists. METHODS Three paediatricians, three paediatric radiologists and three paediatric orthopaedic surgeons completed two rounds of a survey of anteroposterior and frog-leg lateral radiographs of patients with a diagnosis of SCFE (25), femoroacetabular impingement (four), Legg-Calvé-Perthes (11) or no hip pathology (ten). Intra- and interobserver agreement among specialties regarding the diagnosis of a SCFE were assessed using Cohen's kappa coefficient (κ). Diagnostic accuracy of SCFE relative to the benchmark, a combination of the radiographic diagnosis based on Klein's line, clinical symptoms and surgical treatment, was assessed computing sensitivity, specificity and accuracy. RESULTS Intraobserver agreement between the surveys was moderate among paediatricians (κ-range, 0.44 to 0.52), moderate to almost perfect among orthopaedic surgeons (κ-range, 0.79 to 0.88) and almost perfect among paediatric radiologists (κ-range, 0.83 to 1.00). Interobserver agreement for survey 1 and 2 was slight among paediatricians (mean κ, 0.19), substantial among orthopaedic surgeons (mean κ, 0.77) and almost perfect among paediatric radiologists (mean κ, 0.86). Sensitivity of SCFE-diagnosis was high among radiologists and orthopaedic surgeons (88% to 100% for both specialties), but lower for paediatricians (24% to 76%). Specificity was high among radiologists and orthopaedic surgeons (72% to 84%), however, variable among paediatricians (56% to 80%). Accuracy of a SCFE-diagnosis was highest in radiologists (84% to 92%), followed by orthopaedic surgeons (80% to 88%) and paediatricians (48% to 78%). CONCLUSION SCFE can be detected on radiographs by different medical specialties. Intra- and interobserver agreement, specificity, sensitivity and accuracy for radiographic SCFE-diagnosis amongst paediatric radiologists and orthopaedic surgeons are better than that of general paediatricians. LEVEL OF EVIDENCE II.
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Affiliation(s)
- A. Lam
- Albert Einstein College of Medicine, Bronx, New York, New York, USA
| | - S. A. Boenerjous
- Department of Orthopaedic Surgery, Montefiore Medical Center, Bronx, New York, New York, USA
| | - Y. Lo
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine, Bronx, New York, New York, USA
| | - J. M. Abzug
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - J. Kurian
- Department of Radiology, Paediatric Radiology, Montefiore Medical Center, Bronx, New York, New York, USA
| | - M. C. Liszewski
- Department of Radiology, Paediatric Radiology, Montefiore Medical Center, Bronx, New York, New York, USA
| | - D. E. Sanderson
- Department of Paediatrics, General Paediatrics, Montefiore Medical Center, Bronx, New York, New York, USA
| | - J. M. Scholnick
- Department of Paediatrics, General Paediatrics, Montefiore Medical Center, Bronx, New York, New York, USA
| | - B H. Taragin
- Department of Radiology, Paediatric Radiology, Montefiore Medical Center, Bronx, New York, New York, USA
| | - J. A. Gomez
- Division of Paediatric Orthopaedics, Children’s Hospital at Montefiore Medical Center, Bronx, New York, New York, USA
| | - N. Y. Otsuka
- Division of Paediatric Orthopaedics, Children’s Hospital at Montefiore Medical Center, Bronx, New York, New York, USA
| | - R. Hanstein
- Division of Paediatric Orthopaedics, Children’s Hospital at Montefiore Medical Center, Bronx, New York, New York, USA, Correspondence should be sent to Regina Hanstein, 3400 Bainbridge Ave, MAP 6th floor, Bronx, NY 10467, United States. E-mail:
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Lo Y, Sauvé J, Menzies S, Sly LM. A7 PI3KP110δ DRIVES INTESTINAL FIBROSIS IN SHIP DEFICIENT MICE. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y Lo
- University of British Columbia, Vancouver, BC, Canada
| | - J Sauvé
- University of British Columbia, Vancouver, BC, Canada
| | - S Menzies
- University of British Columbia, Vancouver, BC, Canada
| | - L M Sly
- University of British Columbia, Vancouver, BC, Canada
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Wu H, Lo Y, Chan A, Law KS, Mok MY. Rel B-modified dendritic cells possess tolerogenic phenotype and functions on lupus splenic lymphocytes in vitro. Immunology 2017; 149:48-61. [PMID: 27278094 PMCID: PMC4981611 DOI: 10.1111/imm.12628] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 09/18/2015] [Revised: 04/18/2016] [Accepted: 05/28/2016] [Indexed: 12/26/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease that is characterized by high morbidity and mortality and its treatment remains challenging. Dendritic cells (DCs) have been shown to participate in the initiation and perpetuation of lupus pathogenesis and the DCs that can induce tolerogenicity appear as potential cell‐based therapy in this condition. In this study, we examined the in vitro tolerogenic properties of bone‐marrow derived DCs (BMDCs) in the murine lupus setting. We used lentiviral transduction of RelB‐silencing short hairpin RNA to modify the expression of RelB, a key transcription factor regulating DC maturation, in BMDCs from MRL/MpJ mice. Tolerogenic properties of RelB‐modified DCs were compared with scrambled control (SC) ‐modified DCs. RelB expression was found to be significantly reduced in RelB‐modified DCs derived from MRL/MpJ mice, wild‐type of the same genetic background as MRL/lpr lupus‐prone mice. These MRL/MpJ RelB‐modified DCs displayed semi‐mature phenotype with expression of lower levels of co‐stimulatory molecules compared with SC‐modified DCs. RelB‐modified DCs were found to be low producers of interleukin‐12p70 (IL‐12p70) and could induce hyporesponsiveness of splenic T cells from MRL/MpJ and MRL/lpr mice. Furthermore, they down‐regulated interferon‐γ expression and induced IL‐10‐producing T cells in MRL/MpJ splenocytes, and attenuated interferon‐γ and IL‐17 expression in MRL/lpr splenic CD4+ lymphocytes. Splenocytes primed by RelB‐modified DCs demonstrated antigen‐specific suppressive effects on allogeneic splenocytes. In conclusion, RelB‐silencing in DCs generates DCs of tolerogenic properties with immunomodulatory function and appears as potential option of cell‐targeted therapy.
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Affiliation(s)
- Haijing Wu
- Division of Rheumatology & Clinical Immunology, Department of Medicine, The University of Hong Kong, Hong Kong
| | - Yi Lo
- Division of Rheumatology & Clinical Immunology, Department of Medicine, The University of Hong Kong, Hong Kong
| | - Albert Chan
- Division of Rheumatology & Clinical Immunology, Department of Medicine, The University of Hong Kong, Hong Kong
| | - Ka Sin Law
- Division of Rheumatology & Clinical Immunology, Department of Medicine, The University of Hong Kong, Hong Kong
| | - Mo Yin Mok
- Division of Rheumatology & Clinical Immunology, Department of Medicine, The University of Hong Kong, Hong Kong
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Abstract
Pulmonary arterial hypertension (PAH) in patients with systemic lupus erythematosus (SLE) is uncommon but is associated with poor survival. This study aimed to examine the long-term effects of bosentan, a dual endothelin-1 receptor antagonist, on symptomatology, haemodynamics and quality of life measures in SLE patients with symptomatic PAH. Four local patients had been followed up prospectively with pre-defined protocol during 12-months of bosentan treatment. Six minute walk distance (6MWD), NYHA functional class, Borg Dyspnoea Index (BDI) and SF-36 were measured at 0, 3, 6, 9 and 12 months. Systolic pulmonary arterial pressure (PAP) was measured by transthoracic echocardiography at zero, six and 12 months. Clinical parameters were analysed, pooling data from other SLE patients reported in the literature ( n = 4). Bosentan was found to result in significant improvement in 6MWD compared to baseline [+24.8 m, +26.2 m, +54 m and +62.7 m at three ( P = 0.001), six ( P = 0.001), nine ( P = 0.24) and 12 ( P = 0.01) months respectively]. A differential effect was found with greater response in patients with lower exercise capacity. This was accompanied by decrease in NYHA functional class, BDI, transient or sustained drop in systolic PAP and mild improvement in SF-36 domains including mental health, vitality, social function and general health. Significantly deranged liver function was found in one patient. Lupus (2007) 16, 279—285.
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Affiliation(s)
- M Y Mok
- Department of Medicine, Queen Mary Hospital, Pokfulam Road, Hong Kong.
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Chou S, Yang C, Lo Y. Fetal Mesenchymal Stem Cells Exhibit a Wnt-dependent Protective Action on Radiation-induced Hematopoietic Failure. Cytotherapy 2016. [DOI: 10.1016/j.jcyt.2016.03.232] [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] [Indexed: 10/21/2022]
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12
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Chao M, Wei J, Yuan Y, Lo Y. SU-G-BRA-10: Marker Free Lung Tumor Motion Tracking by An Active Contour Model On Cone Beam CT Projections for Stereotactic Body Radiation Therapy of Lung Cancer. Med Phys 2016. [DOI: 10.1118/1.4956934] [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] [Indexed: 11/07/2022] Open
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Sheu R, Powers A, McGee H, Stock R, Lo Y. SU-F-T-44: A Comparison of the Pre-Plan, Intra-Operative Plan, and Post-Implant Dosimetry for a Prostate Implant Case Using Prefabricated Linear Polymer-Encapsulated Pd-103. Med Phys 2016. [DOI: 10.1118/1.4956179] [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] [Indexed: 11/07/2022] Open
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Mok M, Lam I, Lo Y, Luk D, Lau W, Chan W. SAT0029 Dectin-1 Mediates Aberrant Innate and Adaptive Immune Response in Patients with Systemic Lupus Erythematosus. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3854] [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] [Indexed: 11/03/2022]
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15
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Rimando M, Wu H, Lee C, Kuo S, Lo Y, Liu Y, Lee O. Bimodal Effects of Dexamethasone on Osteogenic Differentiation of Mesenchymal Stromal Cells. Cytotherapy 2016. [DOI: 10.1016/j.jcyt.2016.03.158] [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] [Indexed: 10/21/2022]
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16
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Yuan Y, Buckstein M, Chao M, Rosenzweig K, Lo Y. WE-FG-202-10: Assessing Hepatocellular Carcinoma (HCC) Response to SBRT Using DCE-MRI. Med Phys 2016. [DOI: 10.1118/1.4957922] [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] [Indexed: 11/07/2022] Open
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17
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Mok MY, Wu H, Lo Y. Bone marrow derived dendritic cells modified by lentiviral-mediated RelB shRNA possess tolerogenic phenotype and functions on lupus splenic lymphocytes. The Journal of Immunology 2016. [DOI: 10.4049/jimmunol.196.supp.210.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease that is characterized by high morbidity and mortality and remains challenging in treatment. Dendritic cells (DCs) have been shown to participate in the initiation and perpetuation of lupus pathogenesis. DCs that can induce tolerogenicity appear as potential cell-based therapy in this condition. In this study, we examined the in vitro tolerogenic properties of bone-marrow derived DCs (BMDCs) in the murine lupus setting. We used lentiviral transduction of RelB-silencing shRNA to modify expression of RelB, a key transcription factor regulating DC maturation, in BMDCs from MRL/MpJ mice. Tolerogenic properties of RelB-modified DCs were compared to scrambled control (SC)-modified DCs. RelB expression was found to be significantly reduced in RelB-modified DCs derived from MRL/MpJ mice, wild type of the same genetic background as MRL/lpr lupus-prone mice. These MRL/MpJ RelB-modified DCs displayed semi-mature phenotype with expression of lower levels of co-stimulatory molecules compared to SC-modified DCs. RelB-modified DCs were found to be low producer of IL-12p70, can induce hyporesponsiveness of splenic T cells from MRL/MpJ and lupus-prone MRL/lpr mice. Furthermore, they downregulated IFN-γ expression and induced IL-10 producing T cells in MRL/MpJ splenocytes, and attenuated IFN-γ and IL-17 expression in MRL/lpr splenic CD4+ lymphocytes. Splenocytes primed by RelB-modified DCs demonstrated antigen-specific suppressive effect on allogeneic splenocytes. In conclusions, RelB-silencing in DCs generates DCs of tolerogenic properties with immunomodulatory function and appears as potential option of cell-targeted therapy.
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Affiliation(s)
| | | | - Yi Lo
- 1Univ. of Hong Kong, Hong Kong
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Punwani N, Burn T, Scherle P, Flores R, Shi J, Collier P, Hertel D, Haley P, Lo Y, Waeltz P, Rodgers J, Shepard S, Vaddi K, Yeleswaram S, Levy R, Williams W, Gottlieb AB. Downmodulation of key inflammatory cell markers with a topical Janus kinase 1/2 inhibitor. Br J Dermatol 2015; 173:989-97. [PMID: 26123031 DOI: 10.1111/bjd.13994] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND INCB018424 is a novel, potent Janus kinase (JAK)1/JAK2 inhibitor that blocks signal transduction of multiple proinflammatory cytokines. OBJECTIVES To evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics and preliminary efficacy of topical INCB018424 phosphate cream in patients with plaque psoriasis. METHODS Topical INCB018424 phosphate 1·0% or 1·5% cream was applied once daily (QD) or twice daily (BID) for 4 weeks to 2-20% body surface area in five sequential cohorts of five patients aged 18-65 years. Target lesions were scored on a scale of 0-4 for erythema, scaling and thickness. Additionally, the overall disease activity in each patient was measured using Physician's Global Assessment. INCB018424 concentrations were measured in plasma, and cytokine stimulated phosphorylated signal transducer and activator of transcription 3 phosphorylation (pSTAT3) levels in peripheral blood cells were evaluated. Pretreatment and post-treatment skin biopsies were compared with healthy skin, including evaluation of histopathology, immunohistochemistry and mRNA expression. RESULTS Treatment with INCB018424 phosphate cream either 1·0% QD or 1·5% BID resulted in improvements in lesion scores. No significant inhibition of pSTAT3 in peripheral blood cells was observed following topical application, consistent with the generally low steady-state plasma concentrations of INCB018424 measured. Transcriptional markers of immune cell lineage/activation in lesional skin were reduced by topical INCB018424, with correlations observed between clinical improvement and decreases in markers of T helper 17 lymphocyte activation, dendritic-cell activation and epidermal hyperplasia. INCB018424 treatment reduced epidermal hyperplasia and dermal inflammation in most patient samples, with reductions in CD3, CD11c, Ki67 and keratin 16 observed by immunohistochemical analysis. CONCLUSIONS Topical INCB018424 dosed for 28 days QD or BID is pharmacologically active in patients with active psoriasis and modulates proinflammatory cytokines in the pathogenesis of psoriatic lesions.
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Affiliation(s)
- N Punwani
- Drug Development, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - T Burn
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - P Scherle
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - R Flores
- Drug Development, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - J Shi
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - P Collier
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - D Hertel
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - P Haley
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - Y Lo
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - P Waeltz
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - J Rodgers
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - S Shepard
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - K Vaddi
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - S Yeleswaram
- Drug Discovery, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - R Levy
- Drug Development, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - W Williams
- Drug Development, Incyte Corporation, Rt. 141 and Henry Clay Road, Wilmington, DE, 19880, U.S.A
| | - A B Gottlieb
- Department of Dermatology, Tufts Medical Center, Boston, MA, U.S.A
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Gao Y, Lo Y, Mok MY. Symptoms of attention deficit hyperactivity disorder in patients with systemic lupus erythematosus. Lupus 2015; 24:1498-504. [PMID: 26116578 DOI: 10.1177/0961203315593817] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 06/08/2015] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Cognitive function and mood disturbance are common in patients with systemic lupus erythematosus (SLE). This study aims to examine whether SLE patients have more features of adult attention deficit hyperactivity disorder (ADHD) and their relation to anxiety and depressive symptoms. METHODS Symptoms and clinically significant items of the inattention and hyperactivity/impulsivity domains of ADHD were examined in Part A and Part B by the screening instrument of the ADHD Self-Reported Scale (ASRS), respectively. Anxiety and depressive symptoms were measured by HADS-A and HADS-D, respectively. RESULTS There were no differences in symptom scores of inattention and hyperactivity/impulsivity between inactive SLE patients (n = 117) and age- and sex-matched controls (n = 64). However, SLE patients had more clinically significant items in the inattention domain compared with controls (p = 0.006), particularly among those who had previous cerebral involvement (p = 0.004). Patients who had psychiatric diseases had more clinically significant items in the hyperactivity/impulsivity domain (p = 0.006). Possible ADHD was found in 7.7% of SLE and 6.3% of healthy individuals (p = 1.00) by the screening tool. Patients with higher inattention symptom scores were more likely to be unemployed but not for duration of education and smoking habit. Anxiety and depressive symptoms correlated with ADHD symptoms. HADS-A was an independent predictive factor for clinically significant symptoms of inattention (p < 0.001) and hyperactivity/impulsivity (p = 0.04) by logistic regression. CONCLUSION Inactive SLE patients, particularly those who had previous cerebral lupus, had more clinically significant symptoms of inattention but not hyperactivity/impulsivity reflecting underlying cognitive impairment. Anxiety and depressive symptoms were common confounders for ADHD-like symptoms.
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Affiliation(s)
- Y Gao
- Division of Rheumatology & Clinical Immunology, Department of Medicine, Queen Mary Hospital, the University of Hong Kong
| | - Y Lo
- Division of Rheumatology & Clinical Immunology, Department of Medicine, Queen Mary Hospital, the University of Hong Kong
| | - M Y Mok
- Division of Rheumatology & Clinical Immunology, Department of Medicine, Queen Mary Hospital, the University of Hong Kong
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Wu H, Lo Y, Chan A, Mok M. AB0181 Bone Marrow Derived Dendritic Cells Modified by Lentiviral-Mediated Relb Shrna Possess Tolerogenic Phenotype and Functions on Lupus Splenic Lymphocytes. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2462] [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] [Indexed: 11/04/2022]
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Gao Y, Lau E, Wan H, Lo Y, Mok M. AB0596 Systemic Lupus Erythematosus Patients with Past Neuropsychiatric Involvement is Associated with Worse Cognitive Impairment: A Longitudinal Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2460] [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] [Indexed: 11/04/2022]
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22
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Wu H, Lo Y, Luk D, Lau C, Mok M. AB0182 Alternatively Activated Dendritic Cells Derived from Systemic Lupus Erythematosus Patients Have Tolerogenic Phenotype and Function. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2458] [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] [Indexed: 11/04/2022]
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23
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Gao Y, Lo Y, Mok M. FRI0412 Symptoms of Attention Deficit Hyperactivity Disorder in Patients with Systemic Lupus Erythematosus. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2459] [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] [Indexed: 11/03/2022]
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24
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Tseng T, Green S, Sheu R, Lo Y. SU-E-T-438: Frameless Cranial Stereotactic Radiosurgery Immobilization Effectiveness Evaluation. Med Phys 2015. [DOI: 10.1118/1.4924799] [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] [Indexed: 11/07/2022] Open
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Yuan Y, Chao M, Sheu R, Dumane V, Gupta V, Lo Y. SU-E-J-103: Propagation of Rectum and Bladder Contours for Tandem and Ring (T&R) HDR Treatment Using Deformable Image Registration. Med Phys 2015. [DOI: 10.1118/1.4924190] [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] [Indexed: 11/07/2022] Open
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26
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Chao M, Brousmiche S, Yuan Y, Rosenzweig K, Lo Y. SU-D-207-01: Markerless Respiratory Motion Tracking with Contrast Enhanced Thoracic Cone Beam CT Projections. Med Phys 2015. [DOI: 10.1118/1.4923902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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27
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Sheu R, Ghafar R, Powers A, Green S, Lo Y. SU-D-BRD-06: Creating a Safety Net for a Fully Automated, Script Driven Electronic Medical Record. Med Phys 2015. [DOI: 10.1118/1.4923872] [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] [Indexed: 11/07/2022] Open
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Wu HJ, Lo Y, Luk D, Lau CS, Lu L, Mok MY. Alternatively activated dendritic cells derived from systemic lupus erythematosus patients have tolerogenic phenotype and function. Clin Immunol 2014; 156:43-57. [PMID: 25463431 DOI: 10.1016/j.clim.2014.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 10/10/2014] [Accepted: 10/28/2014] [Indexed: 12/20/2022]
Abstract
Tolerogenic dendritic cells (DCs) are potential cell-based therapy in autoimmune diseases. In this study, we generated alternatively activated DCs (aaDCs) by treating monocyte-derived DCs from patients with systemic lupus erythematosus (SLE) and healthy subjects with combination of 1,25 dihydroxyvitamin D(3) (vitD3) and dexamethasone followed by lipopolysaccharide-induced maturation. Lupus aaDCs were found to acquire semi-mature phenotype that remained maturation-resistant to immunostimulants. They produced low level of IL-12 but high level of IL-10. They had attenuated allostimulatory effects on T cell activation and proliferation comparable to normal aaDCs and demonstrated differential immunomodulatory effects on naïve and memory T cells. These aaDCs were capable of inducing IL-10 producing regulatory T effectors from naïve T cells whereas they modulated cytokine profile with suppressed production of IFN-γ and IL-17 by co-cultured memory T cells with attenuated proliferation. These aaDCs were shown to be superior to those generated using vitD3 alone in lupus patients.
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Affiliation(s)
- Hai Jing Wu
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Hong Kong, Hong Kong.
| | - Yi Lo
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Hong Kong, Hong Kong.
| | - Daniel Luk
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Hong Kong, Hong Kong.
| | - Chak Sing Lau
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Hong Kong, Hong Kong.
| | - Liwei Lu
- Department of Pathology, University of Hong Kong, Hong Kong.
| | - Mo Yin Mok
- Division of Rheumatology & Clinical Immunology, Department of Medicine, University of Hong Kong, Hong Kong.
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Rhome R, Germano I, Blacksburg S, Maloney-Lutz K, Lo Y, Green S. Long-Term Outcomes and Toxicities of Growth Hormone (Somatotroph)–Secreting Pituitary Macroadenomas Treated With Adjuvant Fractionated Stereotactic Radiation Therapy (FSRT). Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1009] [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] [Indexed: 11/25/2022]
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Blacksburg S, Zhang E, Peter H, Liu J, Carpenter T, Lo Y, Rosenzweig K. Characterizing Radiographic and Pathologic Outcomes After Stereotactic Body Radiation Therapy (SBRT) in the Management of Primary Hepatocellular Carcinoma (HCC). Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1222] [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] [Indexed: 10/24/2022]
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31
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Chao M, Lo Y, Yuan Y, Sheu R, Rosenzweig K. SU-D-18A-01: Tumor Motion Tracking with a Regional Deformable Registration Model for Four Dimensional Radiation Treatment of Lung Cancer. Med Phys 2014. [DOI: 10.1118/1.4887901] [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] [Indexed: 11/07/2022] Open
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32
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Sheu R, Tseng T, Powers A, Lo Y. SU-E-T-71: Commissioning and Acceptance Testing of a Commercial Monte Carlo Electron Dose Calculation Model (eMC) for TrueBeam. Med Phys 2014. [DOI: 10.1118/1.4888401] [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] [Indexed: 11/07/2022] Open
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33
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Tseng T, Sheu R, Todorov B, Green S, Blacksburg S, Lo Y. TH-A-9A-05: Initial Setup Accuracy Comparison Between Frame-Based and Frameless Stereotactic Radiosurgery. Med Phys 2014. [DOI: 10.1118/1.4889575] [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] [Indexed: 11/07/2022] Open
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34
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Tseng T, Sheu R, Lo Y. SU-E-T-184: Feasibility of Superabsorbent Polymers as a Buildup Material. Med Phys 2014. [DOI: 10.1118/1.4888514] [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] [Indexed: 11/07/2022] Open
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35
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Yuan Y, Chao M, Sheu R, Rosenzweig K, Lo Y. SU-C-18A-06: Tracking Fuzzy Border Using Geodesic Curve and Its Application to Liver Segmentation On Planning CT. Med Phys 2014. [DOI: 10.1118/1.4887833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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36
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Wright F, Sharma S, Kini A, Dumane V, Sheu R, Lo Y, Bakst R. A Renewed Application of Intracoronary Brachytherapy for In-Stent Restenosis at a High-Volume Catheterization Center. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1485] [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] [Indexed: 11/28/2022]
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37
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Chao M, Lo Y. SU-E-J-67: Regularized Deformable Registration of Computed Tomography Images Using Multiple Voxel Resolutions for Four Dimensional Radiation Therapy. Med Phys 2013. [DOI: 10.1118/1.4814279] [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] [Indexed: 11/07/2022] Open
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38
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Lo Y, Sheu R. SU-E-T-87: Commissioning of a 50-100 KV X-Ray Unit for Skin Cancer Treatment. Med Phys 2013. [DOI: 10.1118/1.4814522] [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] [Indexed: 11/07/2022] Open
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39
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Sheu R, Lo Y. SU-E-T-63: Dose Profile Study On a KV Superficial Radiation Therapy System - Sensus SRT100TM. Med Phys 2013. [DOI: 10.1118/1.4814498] [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] [Indexed: 11/07/2022] Open
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40
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Factor SH, Lo Y, Schoenbaum E, Klein RS. Incident hypertension in older women and men with or at risk for HIV infection. HIV Med 2013; 14:337-46. [PMID: 23294666 DOI: 10.1111/hiv.12010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2012] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Antiretroviral (ARV) therapy has prolonged the life expectancy of HIV-infected persons, increasing their risk of age-associated diseases, including atherosclerosis (AS). Decreased risk of AS has been associated with the prevention and control of hypertension (HTN). We conducted a cohort study of perimenopausal women and older men with or at risk of HIV infection to identify risk factors for incident HTN. METHODS Standardized interviews, physical examinations, and laboratory examinations were scheduled at 6-month intervals. Interview data included demographics, medical, family, sexual behaviour and drug use histories, and physical activity. RESULTS There were 330 women and 329 men eligible for inclusion in the study; 27% and 35% of participants developed HTN during a median follow-up period of 1080 and 1071 days, respectively. In gender-stratified analysis, adjusting for traditional HTN risk factors (age, race, body mass index, smoking, diabetes, family history of HTN, alcohol dependence, physical activity and high cholesterol), HIV infection was not associated with incident HTN in women [hazard ratio (HR) 1.31; 95% confidence interval (CI) 0.56, 3.06] or men (HR 1.67; 95% CI 0.75, 3.74). Among HIV-infected women, although exposure to ARVs was not significantly associated with incident HTN (HR 0.72; 95% CI 0.26, 1.99), CD4 T-cell count was positively associated with incident HTN (HR 1.15 per 100 cells/μL; 95% CI 1.03, 1.28). Among physically active HIV-infected men, exposure to ARVs was negatively associated with incident HTN (HR 0.15; 95% CI 0.03, 0.78). CONCLUSIONS HIV infection was not associated with incident HTN in older men or women. This study provides additional evidence supporting a causal relationship between immune function and incident HTN, which warrants further study.
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Affiliation(s)
- S H Factor
- Division of Infectious Diseases, Mount Sinai School of Medicine, New York, NY 10029, USA.
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Chin M, Freniere B, Lancerotto L, Saleeby J, Lo Y, Ignotz R, Orgill D, Lalikos J, Fitzgerald T. Hyperspectral Imaging for Early Prediction of Chronic Microvascular Injury in Irradiated Skin. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1910] [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] [Indexed: 10/27/2022]
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Lo Y, Sheu R, Germano I, Green S. SU-E-T-584: Dosimetric Comparison Between Static IMRT and VMAT for a Four- Lesion Brain Treatment. Med Phys 2012; 39:3840. [DOI: 10.1118/1.4735673] [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] [Indexed: 11/07/2022] Open
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43
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Svoboda A, Lo Y, Sheu R, Dumane V, Rosenzweig K. SU-E-T-315: Planning and Verification of CT-Based HDR Intraluminal Brachytherapy Treatment for Malignant Obstructive Jaundice. Med Phys 2012; 39:3776. [DOI: 10.1118/1.4735401] [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] [Indexed: 11/07/2022] Open
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Bannon E, Lo Y, Urie M. SU-E-T-335: Fetal Dose Estimates for Radiotherapy Using IMRT and VMAT. Med Phys 2012. [DOI: 10.1118/1.4735422] [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] [Indexed: 11/07/2022] Open
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45
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Sheu R, Lo Y. SU-E-T-40: R&V System Direct-Accessing MU Second Check Tool. Med Phys 2012. [DOI: 10.1118/1.4735096] [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] [Indexed: 11/07/2022] Open
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Keller MJ, Malone AM, Carpenter CA, Lo Y, Huang M, Corey L, Willis R, Nguyen C, Kennedy S, Gunawardana M, Guerrero D, Moss JA, Baum MM, Smith TJ, Herold BC. Safety and pharmacokinetics of aciclovir in women following release from a silicone elastomer vaginal ring. J Antimicrob Chemother 2012; 67:2005-12. [PMID: 22556381 DOI: 10.1093/jac/dks151] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES Systemic aciclovir and its prodrug valaciclovir are effective in treating and reducing recurrences of genital herpes simplex virus (HSV) and reducing transmission. Local aciclovir delivery, if it can achieve and maintain comparable intracellular genital tract levels, may be equally effective in the treatment and suppression of genital HSV. Intravaginal ring (IVR) delivery of aciclovir may provide pre-exposure prophylaxis against HSV acquisition. METHODS Tolerability and pharmacokinetics were evaluated in six HIV-negative women with recurrent genital HSV who switched their daily oral valaciclovir suppression to an aciclovir IVR for 7 days (n = 3) or 14 days (n = 3). Blood and cervicovaginal lavage (CVL) were collected after oral and IVR dosing to measure aciclovir concentrations and genital swabs were obtained to quantify HSV shedding by PCR. RESULTS The rings were well tolerated. Median plasma aciclovir concentrations were 110.2 ng/mL (IQR, 85.9-233.5) 12-18 h after oral valaciclovir. Little or no drug was detected in plasma following IVR dosing. Median (IQR) CVL aciclovir levels were 127.3 ng/mL (21-660.8) 2 h after oral valaciclovir, 154.4 ng/mL (60.7-327.5) 12-18 h after oral valaciclovir and 438 ng/mL (178.5-618.5) after 7 days and 393 ng/mL (31.6-1615) after 14 days of aciclovir ring use. Median CVL aciclovir levels 2 h after oral dosing were similar to levels observed 7 (P = 0.99) and 14 (P = 0.75) days after ring use. HSV DNA was not detected in genital swabs and there was no significant change in inflammatory mediators. CONCLUSIONS This first-in-human study demonstrated that an IVR could safely deliver mucosal levels of aciclovir similar to oral valaciclovir without systemic absorption. More intensive site-specific pharmacokinetic studies are needed to determine whether higher local concentrations are needed to achieve optimal drug distribution within the genital tract.
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Affiliation(s)
- M J Keller
- Department of Medicine, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA.
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Sheu R, Svoboda A, Dumane V, Lo Y. SU-E-T-203: Sensitivity Study on the Use of Computed Radiography for Linac Routine Quality Assurance - Light/radiation Field Coincidence. Med Phys 2011. [DOI: 10.1118/1.3612153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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48
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Svoboda A, Sheu R, Lo Y, Dumane V. SU-E-T-407: Investigation of the Need for Bolus for Superficial Head and Neck Tumors Treated with 3D, RapidArc, and IMRT. Med Phys 2011. [DOI: 10.1118/1.3612361] [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] [Indexed: 11/07/2022] Open
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Lo Y, Sheu R, Green S, Germano I. SU-E-T-893: A Standardized 11-Field Treatment Plan for Radiosurgery to Spinal Lesions. Med Phys 2011. [DOI: 10.1118/1.3612857] [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] [Indexed: 11/07/2022] Open
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Dumane V, Powers A, Sheu R, Green S, Svoboda A, Lo Y. SU-E-T-834: Comparison of Rapidarc, IMRT and 3D Conformal Planning for Treatment of Chestwall, and Regional Nodes. Med Phys 2011. [DOI: 10.1118/1.3612798] [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] [Indexed: 11/07/2022] Open
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