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Xu Y, Woo SB, Treister NS. Thalidomide for management of refractory oral mucosal diseases. Oral Surg Oral Med Oral Pathol Oral Radiol 2024; 137:372-378. [PMID: 38388332 DOI: 10.1016/j.oooo.2023.12.793] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/12/2023] [Accepted: 12/30/2023] [Indexed: 02/24/2024]
Abstract
BACKGROUND Thalidomide has anti-inflammatory properties and has been used off-label for multiple mucocutaneous disorders, but its application in managing refractory oral mucosal diseases is unclear. This study aimed to review the efficacy and safety of thalidomide in treating various oral mucosal disorders refractory to conventional therapies. METHODS The medical records of patients who were prescribed thalidomide from 2002 through 2021 for oral mucosal disorders were reviewed. Data collected included demographic characteristics, oral mucosal disease diagnosis, treatment courses, and thalidomide dose, duration, response, and side effects. RESULTS Thalidomide was prescribed for 28 patients with diagnoses of recurrent aphthous stomatitis (n = 14), inflammatory oral lichenoid lesions (n = 6), traumatic ulcerative granuloma with stroma eosinophilia (n = 5), chronic radiation-induced mucositis (n = 2), and orofacial granulomatosis (n = 1). Patients were treated for a median duration of 84 days (range 2-1,582). Clinical improvement was observed in 19 of 22 patients who completed at least 1 cycle of thalidomide (86.4%), with complete resolution in 12 patients (54.5%). Adverse events occurred in 75% of patients (n = 21), with 8 requiring thalidomide discontinuation. The most common adverse events included peripheral neuropathy (42.9%), drowsiness (28.6%), and constipation (21.4%). CONCLUSIONS Thalidomide may be considered for the management of refractory oral mucosal disorders. Drug side effects are common and need monitoring closely during use.
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Affiliation(s)
- Yuanming Xu
- Department of Oral Diagnostic Sciences, Division of Oral Medicine, Tufts University School of Dental Medicine, Boston, MA, USA.
| | - Sook Bin Woo
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, Boston, MA USA; Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Nathaniel S Treister
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, Boston, MA USA; Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
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Chirravur P, Sroussi H, Treister N, Al Hadlaq M, Whiting B, Santoianni JA, Woo SB. Hydroxychloroquine for the management of recalcitrant oral lichen planus. Oral Surg Oral Med Oral Pathol Oral Radiol 2024; 137:355-361. [PMID: 38278674 DOI: 10.1016/j.oooo.2023.12.007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 01/28/2024]
Abstract
OBJECTIVE The objective of this study is to describe the efficacy of hydroxychloroquine (HCQ) in patients with oral lichen planus (OLP) refractory to conventional therapy. STUDY DESIGN In this single-center retrospective study, patients were prescribed HCQ 200 mg twice daily. Pain, reticulation, erythema, and ulceration scores were recorded. Two-sample and paired t tests were used to evaluate mean and paired pain scores and paired t test to determine substantial differences in paired REU scores, at HCQ initiation visit and final follow-up at 12 to 24 months. RESULTS Thirty-six patients (69.4% female) with a median age of 70 ± 12.0 (range 48-99) were initiated on HCQ. Only 30 patients were evaluable because pruritus developed in 5 patients (13.9%) and gastrointestinal symptoms in 1 (2.8%). The mean follow-up was 23.2 months (range 1-74). In 19 patients, there was a significant decline in the worst pain score from a mean of 3.9 (SD± 2.8, n = 19) to 1.9 (SD ± 2.4, n = 19) (t = 2.837, P < .006). Paired reticulation, erythema, and ulceration (REU scores) decreased from a weighted mean score of 16.0 (SD ± 8.0, n = 12) to 12.0 (SD ± 6.3, n = 12) (t = 2.07, P < .032). CONCLUSION Hydroxychloroquine was a suitable option and effective in reducing symptoms and disease severity in patients with recalcitrant OLP who do not adequately respond to standard therapy.
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Affiliation(s)
- Prazwala Chirravur
- Oral Medicine, Oral and Maxillofacial Diagnostic Sciences, UCONN Health, Farmington, CT, USA; Carole and Ray Neag Comprehensive Cancer Center, Farmington, CT, USA.
| | - Herve Sroussi
- Division of Oral Medicine and Dentistry, Brigham, and Women's Hospital, Boston, MA, USA; Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Nathaniel Treister
- Division of Oral Medicine and Dentistry, Brigham, and Women's Hospital, Boston, MA, USA; Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Malak Al Hadlaq
- Division of Oral Medicine and Dentistry, Brigham, and Women's Hospital, Boston, MA, USA; Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Brent Whiting
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - James A Santoianni
- Division of Oral Medicine and Dentistry, Brigham, and Women's Hospital, Boston, MA, USA
| | - Sook Bin Woo
- Division of Oral Medicine and Dentistry, Brigham, and Women's Hospital, Boston, MA, USA; Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
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Mays JW, Carey BP, Posey R, Gueiros LA, France K, Setterfield J, Woo SB, Sollecito TP, Culton D, Payne AS, Greenberg MS, De Rossi S. World Workshop of Oral Medicine VII: A systematic review of immunobiologic therapy for oral manifestations of pemphigoid and pemphigus. Oral Dis 2020; 25 Suppl 1:111-121. [PMID: 31140696 DOI: 10.1111/odi.13083] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 02/07/2019] [Revised: 02/23/2019] [Accepted: 02/25/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To assess the evidence for treatment of oral involvement of pemphigus and pemphigoid with biologics. STUDY DESIGN This systematic review used a comprehensive search strategy to identify literature describing oral involvement of pemphigus or pemphigoid treated with a biologic agent. The primary outcome measures were efficacy and safety of biologic therapy. RESULTS Inclusion criteria were met by 154 studies including over 1200 patients. Treatment of pemphigus with a total of 11 unique biologic agents and 3 unique combinations of agents is reported. Five randomized controlled trials (RCT) were included in the final analysis that investigated infliximab, IVIg, rituximab, and autologous platelet-rich plasma therapy for pemphigus vulgaris. Three non-RCT studies reported on successful rituximab or IVIg therapy for mucous membrane pemphigoid. Studies demonstrated considerable heterogeneity in agent, methods, and quality. CONCLUSIONS Evidence clearly describing oral tissue response to biologic therapy is sparse. Two RCTs support use of rituximab, one supports use of IVIg, and one pilot study suggests intralesional injection of autologous platelet-rich plasma aids healing of oral PV lesions. As oral lesions of pemphigus and pemphigoid can be refractory to systemic therapy, drug trials including biologic therapies should document details regarding response of the oral lesions to therapy.
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Affiliation(s)
- Jacqueline W Mays
- Oral Immunobiology Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland
| | - Barbara P Carey
- Department of Oral Medicine, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Rachael Posey
- William Rand Kenan, Jr. Library of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Luiz Alcino Gueiros
- Oral Medicine Unit, Department of Clinic and Preventive Dentistry, Universidade Federal de Pernambuco, Recife, Brazil
| | - Katherine France
- Department of Oral Medicine, University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania
| | - Jane Setterfield
- Department of Oral Medicine, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Sook Bin Woo
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts
| | - Thomas P Sollecito
- Department of Oral Medicine, University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania
| | - Donna Culton
- Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Aimee S Payne
- Department of Dermatology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Martin S Greenberg
- Department of Oral Medicine, University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania
| | - Scott De Rossi
- School of Dentistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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Li HM, Chau JYM, Woo SB, Lai J, Chan WL. Chinese version of the Rotator Cuff Quality of Life questionnaire: Cross-cultural adaptation and validation in rotator cuff-impaired patients in Hong Kong. Journal of Orthopaedics, Trauma and Rehabilitation 2019. [DOI: 10.1177/2210491719878877] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Purpose: To adapt the Rotator Cuff Quality of Life (RC-QOL) questionnaire into traditional Chinese (Chi-RC-QOL) and to evaluate the validity and reliability in patients suffering from rotator cuff pathologies in Hong Kong. Methods: The Chi-RC-QOL will be constructed using the forward-translation followed by the backward-translation method. Thirty consecutive patients with clinically and radiologically confirmed rotator cuff pathology were recruited. Descriptive statistics will be followed by validity assessment using comparison with the Constant Shoulder (CS) score, University of California Los Angeles (UCLA) Shoulder Rating Scale, and Western Ontario Rotator Cuff (WORC) score. Parametric data will be tested using Pearson’s correlation coefficient for the total scores. Reliability was assessed using a test–retest interval of 30 min. The Cronbach’s α and intraclass correlation coefficient were calculated. Results: Cronbach’s α and internal consistency scores were high for all parts of the Chi-RC-QOL, with Cronbach’s α ranging between 0.89 and 0.98. Internal consistency scores range from 0.82 to 0.92, which can be regarded as an excellent correlation. Test–retest reliability was excellent for all parts of the Chi-RC-QOL with good absolute reliability. Chi-RC-QOL correlates well with the CS score, UCLA Shoulder Rating Scale, and the WORC score, with all being statistically significant. Conclusions: The current study adapted the RC-QOL to traditional Chinese version. The analysis confirmed the validity and reliability of the Chi-RC-QOL questionnaire. Level of Evidence: III.
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Affiliation(s)
- Ho-ming Li
- Department of Orthopaedics and Traumatology, Kwong Wah Hospital, Yau Ma Tei, Hong Kong
| | - Jackie YM Chau
- Department of Orthopaedics and Traumatology, Kwong Wah Hospital, Yau Ma Tei, Hong Kong
| | - SB Woo
- Department of Orthopaedics and Traumatology, Kwong Wah Hospital, Yau Ma Tei, Hong Kong
| | - J Lai
- Department of Physiotherapy, Kwong Wah Hospital, Yau Ma Tei, Hong Kong
| | - WL Chan
- Department of Orthopaedics and Traumatology, Kwong Wah Hospital, Yau Ma Tei, Hong Kong
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Abstract
Patellar instability is a common debilitating injury affecting young active individuals. It accounts for approximately 3% of all knee injuries. We report a family, of which five members across three generations, who suffered from autosomal dominant familial recurrent patellar dislocation as well as short stature. All of them have recurrent patellar dislocations before the age of 15. The affected patients in all three generations have been genetically screened. Genotypical evaluation revealed a balanced translocation of chromosomes 15 and 20.
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Affiliation(s)
- Cm Jimmy Chan
- 1 Department of Orthopaedics and Traumatology, Yan Chai Hospital, Shatin, Hong Kong, China
| | - Ym Jackie Chau
- 2 Department of Orthopaedics and Traumatology, Kwong Wah Hospital, 25 Waterloo Road, Hong Kong, China
| | - S B Woo
- 2 Department of Orthopaedics and Traumatology, Kwong Wah Hospital, 25 Waterloo Road, Hong Kong, China
| | - H M Luk
- 3 Department of Health, Clinical Genetic Service, Kowloon, Hong Kong, China
| | - Ivan Fm Lo
- 3 Department of Health, Clinical Genetic Service, Kowloon, Hong Kong, China
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Gueiros LA, France K, Posey R, Mays JW, Carey B, Sollecito TP, Setterfield J, Woo SB, Culton D, Payne AS, Lodi G, Greenberg MS, Rossi SD. World Workshop on Oral Medicine VII: Immunobiologics for salivary gland disease in Sjögren's syndrome: A systematic review. Oral Dis 2019; 25 Suppl 1:102-110. [PMID: 31140693 PMCID: PMC6544171 DOI: 10.1111/odi.13062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/01/2019] [Accepted: 02/02/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVE This systematic review evaluated the efficacy of immunobiologics for the management of oral disease in Sjögren's syndrome (SS). MATERIALS AND METHODS MEDLINE® , Embase, Scopus, and the Cochrane Library were searched for evidence on the use of immunobiologics for management of glandular disease in SS. Primary outcomes were xerostomia and salivary gland dysfunction, assessed via visual analogue scales, disease-specific scales for SS, measurement of salivary flow, ultrasound data, and quality of life measures. RESULTS Seventeen studies (11 randomized controlled trials and 6 observational studies) met inclusion criteria. Rituximab showed efficacy in improving salivary gland function but not xerostomia. Abatacept showed promise in improving both xerostomia and salivary flow. Belimumab exhibited long-term improvement of salivary flow and subjective measures. The novel agent CFZ533 improved both disease activity and patient-reported indexes. CONCLUSIONS There is strong evidence pointing to the efficacy of rituximab in the management of oral disease in SS. Future controlled trials may elucidate the efficacy of belimumab and abatacept. The new drug CFZ533 is a promising alternative for the management of SS and its salivary gland involvement. In considering these agents, the promise of efficacy must be balanced against the harmful effects associated with biologic agents.
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Affiliation(s)
- Luiz Alcino Gueiros
- Oral Medicine Unit. Department of Clinic and Preventive Dentistry, Universidade Federal de Pernambuco, Recife, Brazil
| | - Katherine France
- Department of Oral Medicine, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - Rachael Posey
- William Rand Kenan, Jr. Library of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - Jacqueline W. Mays
- Oral Immunobiology Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Barbara Carey
- Department of Oral Medicine, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | - Thomas P. Sollecito
- Department of Oral Medicine, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - Jane Setterfield
- Department of Oral Medicine, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | - Sook Bin Woo
- Department of Oral Medicine, Infection, and Immunity. Harvard School of Dental Medicine, Boston, MA, USA
| | - Donna Culton
- Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Aimee S. Payne
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | - Giovanni Lodi
- Oral Medicine Unit, Dipartimento di Scienze Biomediche, Chirurgiche e Odontoiatriche, Università degli Studi di Milano, Milan, Italy
| | - Martin S. Greenberg
- Department of Oral Medicine, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - Scott De Rossi
- School of Dentistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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7
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Villa A, Menon RS, Kerr AR, De Abreu Alves F, Guollo A, Ojeda D, Woo SB. Proliferative leukoplakia: Proposed new clinical diagnostic criteria. Oral Dis 2018; 24:749-760. [PMID: 29337414 DOI: 10.1111/odi.12830] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [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: 10/24/2017] [Revised: 12/13/2017] [Accepted: 01/07/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVE We aimed to characterize proliferative verrucous leukoplakia (PVL) from a clinical and histopathological standpoint and suggest an updated classification. SUBJECTS AND METHODS Records of patients seen at three oral medicine centers with a clinical diagnosis of PVL were reviewed for clinical and histopathological features and malignant transformation (MT). RESULTS There were 42 patients (median age: 69 years [range: 36-88]; 35 females). 12.2% were current smokers. Family history of cancer was present in 43.7% of patients. Partial demarcation of lesion margins was present in 31.3% of lesions, followed by verrucous (27.5%), smooth (22.7%) erythematous (22.3%), and fissured (18.3%) appearance. Large and contiguous and multisite and non-contiguous lesions comprised 57.1% (24/42) and 35.7% (15/42) of PVL cases, respectively. 19.1% had prominent erythema (erythroleukoplakia). The most common histopathological diagnosis at first visit was hyperkeratosis without dysplasia (22/42; 56.4%). MT occurred in 71.4% patients after a median of 37 months [range: 1-210] from initial visit; erythroleukoplakia exhibited MT in 100% of cases. CONCLUSION The generic term "proliferative leukoplakia (PL)" may be more appropriate than PVL because 18.3% were fissured and 22.7% erythematous. We also propose the term proliferative erythroleukoplakia to more accurately describe the subset of PL with prominent erythema, which had the highest MT rate.
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Affiliation(s)
- A Villa
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital and Dana Farber Cancer Institute, Boston, MA, USA.,Department of Oral Medicine Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - R S Menon
- Department of Oral Medicine Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - A R Kerr
- Department of Oral & Maxillofacial Pathology, Radiology and Medicine, New York University College of Dentistry, New York, NY, USA
| | - F De Abreu Alves
- Stomatology Department at AC Camargo Cancer Center, Sao Paulo, Brazil
| | - A Guollo
- Stomatology Department at AC Camargo Cancer Center, Sao Paulo, Brazil
| | - D Ojeda
- Department of Comprehensive Dentistry, School of Dentistry, UT Health San Antonio, San Antonio, TX, USA
| | - S B Woo
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital and Dana Farber Cancer Institute, Boston, MA, USA.,Department of Oral Medicine Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
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Villa A, Woo SB. Leukoplakia—A Diagnostic and Management Algorithm. J Oral Maxillofac Surg 2017; 75:723-734. [DOI: 10.1016/j.joms.2016.10.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 10/18/2016] [Accepted: 10/18/2016] [Indexed: 02/07/2023]
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Abstract
We report an 82-year-old woman who underwent fixation with a long-spanning cable-plate for a bisphosphonate-induced Vancouver B1 periprosthetic femoral fracture. Non-union and breakage of the plate occurred at 16 months and necessitated revision surgery using a long-stem femoral prosthesis augmented with a cable-plate construct. Bone union was achieved eventually after 10 months.
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Affiliation(s)
- S B Woo
- Department of Orthopaedics & Traumatology, Kwong Wah Hospital, Hong Kong
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Padwa BL, Dentino K, Robson CD, Woo SB, Kurek K, Resnick CM. Pediatric Chronic Nonbacterial Osteomyelitis of the Jaw: Clinical, Radiographic, and Histopathologic Features. J Oral Maxillofac Surg 2016; 74:2393-2402. [PMID: 27318191 DOI: 10.1016/j.joms.2016.05.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 05/14/2016] [Accepted: 05/17/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE Chronic nonbacterial osteomyelitis (CNO) is a focal sterile inflammatory osteitis in children that most commonly develops in the long bones, but can occur in any bone. The disease course is variable, ranging from acute and self-resolving isolated lesions to chronic recurrent multifocal osteomyelitis (CRMO), which is frequently associated with extraosseous inflammatory disease. The purpose of this study was to present our clinical experience with CNO of the mandible in children. The specific aims were to 1) document the clinical characteristics, radiographic findings, and histologic features of CNO and 2) determine the percentage of our sample with multifocal disease (CRMO). MATERIALS AND METHODS This is a retrospective case series of patients with mandibular CNO. To be included, patients had to have a mandibular lesion radiographically consistent with osteomyelitis without infection, onset before aged 18 years, and complete records. Medical records were reviewed for history, clinical features, imaging, and pathology. Descriptive data were summarized. RESULTS The sample included 22 patients (13 female and 9 male patients) with disease onset at a mean age of 9.05 ± 2.4 years. On presentation, all patients reported mandibular pain and swelling, and 45% had trismus. All had clinical and/or radiographic findings of multifocal intraosseous disease and/or extraosseous inflammatory lesions. Of the patients, 12 (54%) had a documented family history of autoimmune or autoinflammatory disease and 15 (68%) had elevated erythrocyte sedimentation rates during a flare. Computed tomography scans typically showed expansion of the affected mandible with sclerosis of the medullary space, small foci of poorly defined lytic destruction with a lamellated periosteal reaction, and swollen muscles of mastication. Four distinct histologic features were noted including parallel and interconnected osteoid seams, atypical osteoid, areas of woven bone and hypocellular fibroblastic stroma resembling fibrous dysplasia, and patchy nodular fibrosis. CONCLUSION Pediatric CNO of the mandible has characteristic radiographic and pathologic features and is usually found as one of multiple disease foci in CRMO rather than as an isolated lesion.
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Affiliation(s)
- Bonnie L Padwa
- Associate Professor, Harvard School of Dental Medicine, Oral Surgeon-in-Chief Department of Plastic and Oral Surgery, Boston Children's Hospital, Boston, MA.
| | - Kelley Dentino
- Research Assistant, Department of Plastic and Oral Surgery, Boston Children's Hospital, Boston, MA
| | - Caroline D Robson
- Associate Professor, Harvard Medical School, Division Chief, Neuroradiology, Department of Radiology, Boston Children's Hospital, Boston, MA
| | - Sook Bin Woo
- Associate Professor, Harvard School of Dental Medicine, Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, Boston, MA
| | - Kyle Kurek
- Assistant Professor, Cummings School or Medicine, University of Calgary, Departments of Pathology and Medical Genetics, Alberta Children's Hospital & Research Institute, Boston, MA
| | - Cory M Resnick
- Instructor, Harvard School of Dental Medicine, Department of Plastic and Oral Surgery, Boston Children's Hospital, Boston, MA
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Villa A, Aboalela A, Luskin KA, Cutler CS, Sonis ST, Woo SB, Peterson DE, Treister NS. Mammalian target of rapamycin inhibitor-associated stomatitis in hematopoietic stem cell transplantation patients receiving sirolimus prophylaxis for graft-versus-host disease. Biol Blood Marrow Transplant 2014; 21:503-8. [PMID: 25482865 DOI: 10.1016/j.bbmt.2014.11.680] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [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: 09/08/2014] [Accepted: 11/24/2014] [Indexed: 10/24/2022]
Abstract
The mammalian target of rapamycin (mTOR) inhibitor sirolimus is effective in reducing incidence of graft-versus-host disease (GVHD) after allogeneic hematopoietic stem cell transplantation (HSCT). Agents that inhibit the mTOR pathway are known to be associated with significant and potentially dose-limiting toxicities, including stomatitis. The objective of this study was to report the clinical features and management outcomes of sirolimus-associated oral ulcers in the context of post-HSCT prophylaxis of GVHD. Seventeen patients, from a study cohort of 967, who were treated with sirolimus as prophylaxis for GVHD after allogeneic HSCT at the Dana-Farber/Brigham and Women's Cancer Center developed oral ulcers and were referred to the oral medicine clinic for evaluation and treatment over a period of 6 years. Clinical characteristics (appearance, anatomic site, size) and therapeutic outcomes (time to complete resolution) were documented. Median time to onset of oral ulceration was 55 days after allogeneic HSCT (range, 6 to 387 days); 92.9% of ulcers were located on nonkeratinized mucosa, with the ventrolateral tongue the most common site of involvement. Thirteen patients were treated with topical corticosteroid therapy; 12 of these patients also required intralesional corticosteroid injections. Clinical improvement (resolution of the lesions and improvement of symptoms) was noted in all cases, with no reported adverse events. Median time to complete resolution after onset of therapy was 14 days (range, 2 to 70 days). Patients receiving sirolimus for GVHD prophylaxis may develop painful oral ulcerations, which can be effectively managed with topical steroid treatment. Further prospective studies are needed to better elucidate the incidence of this complication, identify risk factors, and evaluate the effectiveness of interventions.
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Affiliation(s)
- Alessandro Villa
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, and Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts.
| | - Ali Aboalela
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, and Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts
| | - Katharine A Luskin
- School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut
| | - Corey S Cutler
- Department of Medical Oncology, Brigham & Women's Hospital/Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Stephen T Sonis
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, and Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts
| | - Sook Bin Woo
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, and Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts
| | - Douglas E Peterson
- School of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut; Department of Oral Health and Diagnostic Sciences, School of Dental Medicine and Neag Comprehensive Cancer Center, University of Connecticut Health Center, Farmington, Connecticut
| | - Nathaniel S Treister
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, and Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts
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Solomon DH, Mercer E, Woo SB, Avorn J, Schneeweiss S, Treister N. Defining the epidemiology of bisphosphonate-associated osteonecrosis of the jaw: prior work and current challenges. Osteoporos Int 2013; 24:237-44. [PMID: 22707065 DOI: 10.1007/s00198-012-2042-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 04/30/2012] [Indexed: 10/28/2022]
Abstract
UNLABELLED Bisphosphonate-related osteonecrosis of the jaw (BONJ) is an adverse effect of bisphosphonate use with a poorly described epidemiology in osteoporosis patients. We examined the literature and two new cohorts for BONJ. The literature suggests an incidence rate of 0.028 % to 4.3 %. Our cohort studies found an incidence of 0.02 % (95 % CI 0.004 %-0.11 %). INTRODUCTION We examined the epidemiology of BONJ associated with osteoporosis dosing of bisphosphonates. METHODS First, we systematically searched the literature about osteoporosis BONJ. Identified studies were abstracted by two authors. Second, we attempted to estimate the relative risk of BONJ among bisphosphonate users with osteoporosis. Two different large insurance databases, one from 2005-2007 and another from 2007-2010, combined with medical record review, were searched. The older dataset did not include the International Classification of Diagnoses (ICD) diagnosis code for osteonecrosis of the jaw (ONJ; ICD 733.45). Incidence rates and relative risks were estimated using Cox regression. RESULTS The literature review produced nine studies of varying quality. The incidence rates for BONJ among osteoporosis patients varied from 0.028 % to 4.3 %. Two prior studies estimated the relative risk of ONJ related to bisphosphonates and found odds ratios of 7.2 and 9.2. Our attempts to estimate the incidence rate of BONJ encompassed 41,957 in the dataset from 2005-2007 and 466,645 in a separate dataset from 2007-2010. From the older dataset, we found 51 potential cases of BONJ using a broad definition of possible ONJ. One case was confirmed by a dentist for a prevalence of 0.02 % (95 % CI 0.004 %-0.11 %) among bisphosphonate users. From the newer dataset, we found 13 possible cases, but none could be confirmed. Most subjects with the ONJ diagnosis code appeared to have had an osteoporosis-related fracture and not ONJ. CONCLUSIONS The literature suggests a broad range of possible values for the prevalence of BONJ; our estimate fell within the range from prior literature.
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Affiliation(s)
- D H Solomon
- Division of Pharmacoepidemiology, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, USA.
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13
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Chau JYM, Chan WL, Woo SB, Cheng SC, Wong TM, Wong TK, Yen CH, Wong K, Wong WC. Hyaluronic acid instillation following arthroscopic anterior cruciate ligament reconstruction: a double-blinded, randomised controlled study. J Orthop Surg (Hong Kong) 2012; 20:162-5. [PMID: 22933671 DOI: 10.1177/230949901202000205] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
PURPOSE To assess the effect of hyaluronic acid instillation after arthroscopic anterior cruciate ligament (ACL) reconstruction for improving pain, range of movement, and function of the knee. METHODS 28 men and 4 women underwent arthroscopic ACL reconstruction for isolated ACL rupture (partial or complete) and instability after recreational sports injury 2 to 120 months earlier. They were randomised to undergo arthroscopic ACL reconstruction followed by intra-articular viscoseal instillation (13 men and 3 women) or arthroscopic ACL reconstruction alone (15 men and 1 woman). The knee injury osteoarthritis outcome score (for pain, symptoms, activities of daily living, sport and recreation function, and quality of life), range of movement, knee circumference, and analgesic use were assessed on days -1, 1, and 2, and weeks 2, 6 and 12. RESULTS Patient demographics were similar at baseline. At postoperative days 1 and 2, all subscales of the knee injury osteoarthritis outcome score (except for quality of life) were significantly higher in the viscoseal group. At weeks 2, 6, and 12, improvement in both groups equalised. Knee swelling (change in knee circumference) was significantly less in the viscoseal group at days 1 and 2 (p=0.009 and p=0.038, respectively, Mann-Whitney U test). Only one patient in the viscoseal group had a limited range of movement. No patient developed any adverse reaction. CONCLUSION Intra-articular viscoseal instillation improved pain control and swelling 2 days after arthroscopic ACL reconstruction.
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Affiliation(s)
- Jackie Y M Chau
- Department of Orthopaedics and Traumatology, Kwong Wah Hospital, Kowloon, Hong Kong.
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14
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Pang CH, Chan WL, Yen CH, Cheng SC, Woo SB, Choi ST, Hui WK, Mak KH. Comparison of total knee arthroplasty using computer-assisted navigation versus conventional guiding systems: a prospective study. J Orthop Surg (Hong Kong) 2009; 17:170-3. [PMID: 19721145 DOI: 10.1177/230949900901700209] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
PURPOSE To compare knee alignments in total knee arthroplasty (TKA) using computer-assisted navigation versus conventional guiding systems. METHODS Five men and 49 women aged 49 to 79 years underwent TKA for primary osteoarthritis of the knee with varus deformity. All valgus knees were associated with inflammatory arthritis and thus excluded. Computer-assisted navigation was used for the first 35 TKAs, whereas conventional extramedullary tibial and intramedullary femoral guiding systems were used for the next 35 TKAs. The mechanical axis, coronal tibial and femoral angles, sagittal tibial and femoral angles in the 2 groups were compared. RESULTS Sagittal tibial and femoral angles aligned more optimally in TKAs using computer-assisted navigation. In the respective computer-assisted navigation and conventional guiding systems, 33 (94%) and 26 (74%) of the TKAs attained a postoperative mechanical axis of <3 degrees varus/valgus. CONCLUSION Computer-assisted navigation gives a more consistent alignment correction and reduces outliers during implant positioning.
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Affiliation(s)
- C H Pang
- Department of Orthopaedics and Traumatology, Kwong Wah Hospital, 25 Waterloo Road, Hong Kong.
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15
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Affiliation(s)
- J Casiglia
- Bringham Dental Group, Brigham and Women's Hospital, Harvard University School of Medicine, Boston, Massachusetts 02115, USA
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16
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Ross GM, Shamovsky IL, Woo SB, Post JI, Vrkljan PN, Lawrance G, Solc M, Dostaler SM, Neet KE, Riopelle RJ. The binding of zinc and copper ions to nerve growth factor is differentially affected by pH: implications for cerebral acidosis. J Neurochem 2001; 78:515-23. [PMID: 11483654 DOI: 10.1046/j.1471-4159.2001.00427.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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] [Indexed: 11/20/2022]
Abstract
It has recently been shown that transition metal cations Zn2+ and Cu2+ bind to histidine residues of nerve growth factor (NGF) and other neurotrophins (a family of proteins important for neuronal survival) leading to their inactivation. Experimental data and theoretical considerations indicate that transition metal cations may destabilize the ionic form of histidine residues within proteins, thereby decreasing their pK(a) values. Because the release of transition metal cations and acidification of the local environment represent important events associated with brain injury, the ability of Zn2+ and Cu2+ to bind to neurotrophins in acidic conditions may alter neuronal death following stroke or as a result of traumatic injury. To test the hypothesis that metal ion binding to neurotrophins is influenced by pH, the effects of Zn2+ and Cu2+ on NGF conformation, receptor binding and NGF tyrosine kinase (trkA) receptor signal transduction were examined under conditions mimicking cerebral acidosis (pH range 5.5-7.4). The inhibitory effect of Zn2+ on biological activities of NGF is lost under acidic conditions. Conversely, the binding of Cu2+ to NGF is relatively independent of pH changes within the studied range. These data demonstrate that Cu2+ has greater binding affinity to NGF than Zn2+ at reduced pH, consistent with the higher affinity of Cu2+ for histidine residues. These findings suggest that cerebral acidosis associated with stroke or traumatic brain injury could neutralize the Zn2+-mediated inactivation of NGF, whereas corresponding pH changes would have little or no influence on the inhibitory effects of Cu2+. The importance of His84 of NGF for transition metal cation binding is demonstrated, confirming the involvement of this residue in metal ion coordination.
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Affiliation(s)
- G M Ross
- Department of Physiology, Queen's University, Kingston, Ontario, Canada.
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Woo SB, Hong SP, Whealton JH. Semi-empirical joint ion-neutral speed distributions in a weakly ionized gas in electric fields. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3700/9/14/022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Casiglia J, Woo SB. A comprehensive review of oral cancer. Gen Dent 2001; 49:72-82. [PMID: 12004680] [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: 02/25/2023]
Abstract
Oral squamous cell carcinomas comprise 2-3% of all new malignancies diagnosed in the United States, making it the 10th most common malignancy. However, for the last few decades, the average five-year survival rate of 50% has not changed significantly. This article reviews the risk factors associated with the development of oral cancer and how premalignant (leukoplakia and erythroplakia) and actual cancerous lesions may appear. Diagnostic tools and aids to diagnosis are discussed, as are treatment modalities. It is imperative that all dental professionals perform a simple head and neck examination in addition to an oral examination during each new patient visit and each six-month recall appointment. Early detection saves lives.
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Affiliation(s)
- J Casiglia
- Division of Oral Medicine, Department of Oral Medicine, Diagnostic Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
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19
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Woo SB, Schacterle RS, Komaroff AL, Gallagher GT. Salivary gland changes in chronic fatigue syndrome: a case-controlled preliminary histologic study. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2000; 90:82-7. [PMID: 10884641 DOI: 10.1067/moe.2000.107363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The purpose of this preliminary study is to compare labial salivary gland changes of 11 patients with chronic fatigue syndrome with control subjects. STUDY DESIGN Changes in labial salivary glands were graded from 0 to 3+ for acinar dilatation, ductal dilatation, periductal fibrosis, plasmacytic infiltrate, lymphocytic infiltrate, mast cell infiltrate, and lymphocytic aggregates or foci. RESULTS Four of the 11 subjects had 2+ to 3+ changes in at least 4 of the 7 parameters examined. Only the presence of mast cells was statistically significant between the 2 groups. Two of these 4 patients had 1 lymphocytic focus per 4 mm(2) of tissue. CONCLUSIONS The salivary gland changes in patients with chronic fatigue syndrome show varying degrees of ductal and acinar dilatation, periductal fibrosis, lymphoplasmacytic infiltrates, and occasional lymphocytic foci, all suggestive of primary gland damage. The one parameter that showed statistical significance was the presence of mast cells (Fisher exact test, 0.0125).
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Affiliation(s)
- S B Woo
- Dept of Oral Medicine and Diagnostic Sciences, Harvard School of Dental Medicine, Brigham and Women's Hospital, USA
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20
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Saragovi HU, Zheng W, Maliartchouk S, DiGugliemo GM, Mawal YR, Kamen A, Woo SB, Cuello AC, Debeir T, Neet KE. A TrkA-selective, fast internalizing nerve growth factor-antibody complex induces trophic but not neuritogenic signals. J Biol Chem 1998; 273:34933-40. [PMID: 9857023 DOI: 10.1074/jbc.273.52.34933] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.8] [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] [Indexed: 11/06/2022] Open
Abstract
Nerve growth factor (NGF) is a neurotrophin that induces neuritogenic and trophic signals by binding to TrkA and/or p75 receptors. We report a comparative study of the binding, internalization, and biological activity of NGF versus that of NGF in association with an anti-NGF monoclonal antibody (mAb NGF30), directed against the C termini of NGF. NGF.mAb complexes do not bind p75 effectively but bind TrkA with high affinity. After binding, NGF. mAb complexes stimulate internalization faster and to a larger degree than NGF. NGF.mAb-induced activation of TrkA, Shc, and MAPK is transient compared with NGF-induced activation; yet NGF and NGF. mAb afford identical trophic responses. In contrast, NGF induces Suc-1-associated neurotrophic activating protein phosphorylation and neuritogenic differentiation, but NGF.mAb does not. Thus, an absolute separation of trophic and neuritogenic function is seen for NGF.mAb, suggesting that biological response modifiers of neurotrophins can afford ligands with selected activities.
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Affiliation(s)
- H U Saragovi
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Quebec H3G 1Y6, Canada.
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Woo SB, Whalen C, Neet KE. Characterization of the recombinant extracellular domain of the neurotrophin receptor TrkA and its interaction with nerve growth factor (NGF). Protein Sci 1998; 7:1006-16. [PMID: 9568907 PMCID: PMC2143976 DOI: 10.1002/pro.5560070418] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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] [Indexed: 11/07/2022]
Abstract
Nerve growth factor (NGF) is the prototype of a family of neurotrophins that support important neuronal programs such as differentiation and survival of a subset of sympathetic, sensory, and brain neurons. NGF binds to two classes of cell surface receptors: p75LANR and p140TrkA. NGF binding to p140TrkA initiates the neuronal signaling pathway through activation of the tyrosine kinase activity, which subsequently results in a rapid signal transduction through a phosphorylation cascade. To examine this crucial signaling step in more detail, the TrkA extracellular domain polypeptide (TrkA-RED) was overexpressed in Sf21 insect cells and purified to homogeneity. The recombinant TrkA-RED is a 70 kDa acidic glycoprotein with a pI of 5.1, and mimics the intact TrkA receptor for NGF binding with a dissociation constant, Kd, of 2.9 nM. Thus, the recombinant TrkA-RED is functionally competent and can be used to elucidate the interaction of NGF and TrkA receptor. Circular dichroism difference spectra indicated that, upon association of NGF with TrkA-RED, a minor conformational change occurred to form a complex with decreased ordered secondary structure. Interaction between NGF and TrkA-RED was also demonstrated by size exclusion chromatography, light scattering, and chemical crosslinking with evidence for formation of a higher molecular weight complex consistent with a (TrkA-RED)2-(NGF dimer) complex. Association and dissociation rates of 5.6 x 10(5) M(-1) s(-1) and 1.6 x 10(-3) s(-1), respectively, were determined by biosensor technology. Thus, initiation of signaling may stem from NGF-induced receptor dimerization concomitant with a small conformational change.
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Affiliation(s)
- S B Woo
- Department of Biological Chemistry, Finch University of Health Sciences/The Chicago Medical School, Illinois 60064, USA
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Abstract
The authors evaluated the usefulness of an off-site dental evaluation program for bone marrow recipients. This evaluation packet enabled patients scheduled for bone marrow transplants to be evaluated by, and receive any treatment from, their own dentist rather than a dentist at the transplant center. The program generally was effective in achieving its goals and was well-accepted by patients and dentists alike.
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Affiliation(s)
- S B Woo
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, Boston, Mass 02115, USA
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Abstract
OBJECTIVE The objective of this study is to determine the frequency of involvement of different intraoral sites by oral recrudescent herpes simplex virus in immunocompromised patients and whether keratinized intraoral sites are always affected by this virus. STUDY DESIGN The records of 30 hospitalized patients who had oral ulcers culture positive for herpes simplex virus were reviewed for the location of oral ulcers, febrile episodes, and medical diagnoses. RESULTS The data revealed that oral recrudescent herpes simplex virus may involve any intraoral site in immunocompromised patients with nonkeratinized sites representing approximately half of all sites; this is more frequent than has been previously reported. Twenty-six (86.7%) of 30 patients had no evidence of herpes labialis, and 13 (43.3%) of 30 patients were afebrile. CONCLUSION It is recommended that all oral ulcers, in immunocompromised patients should be cultured for herpes simplex virus regardless of their location. Early diagnosis reduces patient morbidity because effective treatment in the form of acyclovir is readily available.
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Affiliation(s)
- S B Woo
- Brigham and Women's Hospital and Harvard School of Dental Medicine, Boston, Mass., USA
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Abstract
Bone marrow transplantation (BMT) is the treatment of choice for many leukemias, lymphomas, bone marrow failure syndromes, and immunodeficiency disorders, and is the primary and salvage therapy for many solid malignancies. With the establishment of national and international marrow banks, unrelated allogeneic BMT is being performed with increasing frequency. Graft-vs.-host disease (GVHD) remains a major complication of allogeneic BMT, occurring in 25% to 70% of patients despite GVHD prophylaxis, with the skin, gastro-intestinal tract, and liver as primary target organs. Oral findings are seen in both acute and chronic GVHD. In acute GVHD, the oral lesions are often painful, erythematous, ulcerative, and desquamative. In chronic GVHD, they are lichenoid with associated erythema and ulcerations; additionally, they may be associated with a sicca syndrome characterized by xerostomia and progressive salivary gland atrophy. General principles of BMT are discussed, as are systemic and local therapeutic options for oral GVHD.
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Affiliation(s)
- S B Woo
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA
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25
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Abstract
The role of the four histidine residues in receptor binding and activity of mouse nerve growth factor (NGF) was investigated using both site-directed mutagenesis and chemical modification with diethyl pyrocarbonate. Replacement of His-75 or His-84 with alanine resulted in decreased biological activity and decreased affinity for p140(trkA); however, with H75A only, a 5-fold increased affinity toward p75(LANR) was observed. The effect of simultaneous replacement of both His-75 and His-84 was neither additive nor synergistic. Slight perturbations in circular dichroism spectra and weakened self-association of the mutants indicated that His-75 and His-84 may be involved in stability, dimerization, and/or folding of NGF. Diethyl pyrocarbonate modification of His-4 and His-8 in the H75A/H84Q double mutant abolished neuritogenesis, binding to both receptors, and phosphorylation of p140(trkA) in PC12 cells. These chemical and mutational results confirm and clarify previous evidence for the involvement of His-75 and His-84 (Dunbar, J. C., Tregear, G. W., and Bradshaw, R. A. (1984) J. Protein Chem. 3, 349-356) or His-4 and His-8 (Shih, A., Laramee, G. R., Schmelzer, C. H., Burton, L. E., and Winslow, J. W. (1994) J. Biol. Chem. 269, 27679-27686) in receptor binding of NGF. At least three and possibly all four histidines, which are located in three spatially distinct regions, contribute to maintenance of functional sites that are essential for receptor binding and activity of NGF.
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Affiliation(s)
- S B Woo
- Department of Biological Chemistry, Finch University of Health Sciences/The Chicago Medical School, North Chicago, Illinois 60064, USA
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Abstract
Recurrent aphthous ulcers, or RAU--also called canker sores--are among the oral mucosal conditions that dentists and physicians see most commonly in their patients. Several systemic conditions are associated with oral aphthouslike ulcers, and aphthae themselves often are mistaken for recrudescent oral herpes simplex virus, or HSV, infections. This article will review RAU, describe systemic conditions associated with aphthous-like ulcerations and discuss the differences between RAU and recrudescent oral HSV infections.
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Affiliation(s)
- S B Woo
- Harvard School of Dental Medicine, Boston, USA
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Woo SB, Allen CM, Orden A, Porter D, Antin JH. Non-gingival soft tissue growths after allogeneic marrow transplantation. Bone Marrow Transplant 1996; 17:1127-32. [PMID: 8807125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- S B Woo
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, Boston, MA 02115, USA
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Woo SB, Timm DE, Neet KE. Alteration of NH2-terminal residues of nerve growth factor affects activity and Trk binding without affecting stability or conformation. J Biol Chem 1995; 270:6278-85. [PMID: 7890765 DOI: 10.1074/jbc.270.11.6278] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [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] [Indexed: 01/27/2023] Open
Abstract
The role of the NH2-terminal region of nerve growth factor (NGF) was studied with an NGF delta 9/13 deletion mutant, overexpressed in a baculovirus system, and mouse NGF truncated at Met-9 by cleavage with CNBr (des-(1-9)-NGF). Structural studies have been performed on the purified proteins, in addition to biological activity assessment, in order to determine effects of such modifications on global conformation and stability. The activity of NGF delta 9/13 was reduced below detectable levels, and the activity of the des-(1-9)-NGF form was decreased by at least a 50-fold in a PC12 bioassay. Competitive binding of NGF delta 9/13 to low affinity receptors on PC12 cells was not impaired; however, the mutant was not capable of competing for the cold chase-stable, high affinity binding of NGF to the cells. The binding of NGF delta 9/13 to Sf21 cells ectopically expressing the TrkA NGF receptor was also abolished. Thus, deletion of residues 9-13 significantly altered the binding affinity for the high affinity receptors on PC12 cells and for the TrkA receptor, but not for the low affinity receptor. Neither the secondary structure, determined by circular dichroism, nor the conformational stability determined by equilibrium denaturation of NGF delta 9/13 was altered as compared with wild type NGF. Slight conformational and stability perturbations of des-(1-9)-NGF were revealed by the same analysis; however, these changes were found to reflect the influence of the formic acid treatment, not the truncation of 9 residues. Our results support the conclusion that the NH2-terminal domain encompassing residues 1-9 and 9-13 is essential for maintaining the binding capability of NGF for high affinity TrkA receptors. Moreover, conformational and stability data show that the functional results of these modifications of the NH2-terminal region are directly due to receptor binding and not to secondary effects of improper folding or other indirect structural changes.
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Affiliation(s)
- S B Woo
- Department of Biological Chemistry, Finch University of Health Sciences/Chicago Medical School, Illinois 60064
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Abstract
BACKGROUND Few longitudinal studies have investigated the onset, duration, and resolution of ulcerative mucositis in bone marrow transplant recipients. This study prospectively followed a group of such patients on a daily basis to obtain data on the incidence of ulcerative mucositis, location and duration of lesions, severity with different conditioning regimens, and the relationship of such mucositis to the absolute neutrophil count. METHODS Fifty-nine bone marrow transplant recipients on prophylactic acyclovir were examined daily for 26 days after marrow infusion, and all oral ulcerative lesions were recorded. RESULTS Oral ulcers occurred in 76.3% of patients, began at a mean of 5 days after marrow infusion (day + 5), and lasted for a median of 6 days. More than 90% of patients showed complete resolution of ulcers on or before day + 15, and all showed resolution when the absolute neutrophil count was > 500 cells/ml. Persistence of ulcers was noticed in patients who had oral graft-versus-host disease and in some patients who initially developed more severe ulcerations. Ninety-six percent of ulcers were located on nonkeratinized mucosa. CONCLUSIONS Ulcerative mucositis occurs in about 75% of bone marrow transplant recipients in the absence of herpes simplex virus infection. Most lesions occur on nonkeratinized mucosae which are vulnerable to trauma, especially if such mucosae are rendered atrophic by conditioning regimens. Oral ulcers may persist beyond day + 15 and after recovery of the neutrophil count in patients who initially develop more severe ulcerations or in patients who develop graft-versus-host disease.
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Affiliation(s)
- S B Woo
- Brigham and Women's Hospital, Boston, MA 02115
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30
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Thornton CG, Kumar GK, Haase FC, Phillips NF, Woo SB, Park VM, Magner WJ, Shenoy BC, Wood HG, Samols D. Primary structure of the monomer of the 12S subunit of transcarboxylase as deduced from DNA and characterization of the product expressed in Escherichia coli. J Bacteriol 1993; 175:5301-8. [PMID: 8366018 PMCID: PMC206582 DOI: 10.1128/jb.175.17.5301-5308.1993] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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] [Indexed: 01/30/2023] Open
Abstract
Transcarboxylase from Propionibacterium shermanii is a complex biotin-containing enzyme composed of 30 polypeptides of three different types: a hexameric central 12S subunit to which 6 outer 5S subunits are attached through 12 1.3S biotinyl subunits. The enzyme catalyzes a two-step reaction in which methylmalonyl coenzyme A and pyruvate serve as substrates to form propionyl coenzyme A (propionyl-CoA) and oxalacetate, the 12S subunit specifically catalyzing one of the two reactions. We report here the cloning, sequencing, and expression of the 12S subunit. The gene was identified by matching amino acid sequences derived from isolated authentic 12S peptides with the deduced sequence of an open reading frame present in a cloned P. shermanii genomic fragment known to contain the gene encoding the 1.3S biotinyl subunit. The cloned 12S gene encodes a protein of 604 amino acids and of M(r) 65,545. The deduced sequence shows regions of extensive homology with the beta subunit of mammalian propionyl-CoA carboxylase as well as regions of homology with acetyl-CoA carboxylase from several species. Two genomic fragments were subcloned into pUC19 in an orientation such that the 12S open reading frame could be expressed from the lac promoter of the vector. Crude extracts prepared from these cells contained an immunoreactive band on Western blots (immunoblots) which comigrated with authentic 12S. The Escherichia coli-expressed 12S was purified to apparent homogeneity by a three-step procedure and compared with authentic 12S from P. shermanii. Their quaternary structures were identical by electron microscopy, and the E. coli 12S preparation was fully active in the reactions catalyzed by this subunit. We conclude that we have cloned, sequenced, and expressed the 12S subunit which exists in a hexameric active form in E.coli.
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Affiliation(s)
- C G Thornton
- Department of Biochemistry, Case Western Reserve University, Cleveland, Ohio 44106-4935
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31
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Woo SB, Shenoy BC, Wood HG, Magner WJ, Kumar GK, Beegen H, Samols D. Effect of deletion from the carboxyl terminus of the 12 S subunit on activity of transcarboxylase. J Biol Chem 1993; 268:16413-9. [PMID: 8344927] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Transcarboxylase from Propionibacterium shermanii is a biotin-containing enzyme which catalyzes the reversible transfer of a carboxyl group from methylmalonyl-CoA to pyruvate. The central hexameric 12 S subunit of the enzyme associates with six 6 S subunits in the complete enzyme complex. We have constructed a series of cloned genes which encode COOH-terminal truncations of the 12 S subunit. Five of these subunits, which remained soluble following expression in Escherichia coli and were missing from 39 to 97 COOH-terminal amino acids, were purified and compared to the full-length subunit after enzyme complexes were assembled in vitro. All of the truncated subunits were 90% as active in the transcarboxylase reaction as wild type except the reaction containing the shortest complex, TC-12 S (1-507), which had 54% of the wild type activity (TC-12 S-WT). The reduced activity was not due to a lack of CoA ester binding sites or the Km for substrate. However, TC-12 S (1-507) was slower to form than TC-12 S-WT and had more incomplete complexes as judged by high performance liquid chromatography gel filtration profiles and electron microscopy. Isolated TC-12 S (1-507) was 70-80% as active as TC-12 S-WT. We also noted that the truncated form was heat-labile compared to wild type. We conclude that the COOH-terminal region of the 12 S subunit plays a role in assembly and stability of the hexamer and also affects the binding of 6 S subunits to form enzyme complexes. Once complexes do form, the catalytic capacity of TC-12 S (1-507) is almost the same as TC-12 S-WT.
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Affiliation(s)
- S B Woo
- Department of Biochemistry, Case Western Reserve University, Cleveland, Ohio 44106-4935
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Peters E, Monopoli M, Woo SB, Sonis S. Assessment of the need for treatment of postendodontic asymptomatic periapical radiolucencies in bone marrow transplant recipients. Oral Surg Oral Med Oral Pathol 1993; 76:45-8. [PMID: 8351120 DOI: 10.1016/0030-4220(93)90292-c] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Oral screening and treatment of existing oral disease before bone marrow transplantation have been reported to decrease the incidence of infectious complications during bone marrow transplantation. Information about the adverse sequelae of specific preexisting oral diseases during bone marrow transplantation is lacking. The presence of postendodontic periapical radiolucencies may suggest recurrent or latent infection. The purpose of this study was to compare the effect of endodontic treatment with nontreatment of asymptomatic postendodontic periapical radiolucencies on the frequency of infectious oral complications during bone marrow transplantation. The records of 276 patients undergoing bone marrow transplantation examined between July 1988 and June 1991 were reviewed retrospectively. Twenty-three postendodontic periapical radiolucencies were identified in 8 women and 15 men. The mean age of patients was 41 years (range, 25 to 58 years). Fourteen of the lesions were untreated, and nine were treated before bone marrow transplantation. When outcomes of transplant complications were compared, neither increased systemic infection as measured by neutropenic days febrile nor local oral infectious complications were significantly different. These results suggest that nontreatment of asymptomatic postendodontic periapical radiolucencies does not increase the incidence of infectious complications during bone marrow transplantation.
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Affiliation(s)
- E Peters
- Division of Dentistry, Brigham and Women's Hospital, Boston, Mass
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Abstract
Herpes simplex virus (HSV) has been implicated as a major etiologic factor in the development of ulcerative mucositis in bone marrow transplant (BMT) recipients. In this study, 60 patients who received BMTs were evaluated for at least 30 days post-transplant for ulcerative mucositis and the presence of culturable HSV. Fifty-nine patients received prophylactic acyclovir. Forty-six patients developed ulcerative lesions and 45 of these were culture negative for HSV. Neither the source of transplant (autologous versus allogenic) nor the HSV antibody status of the patient affected the frequency of mucositis. The conditioning regimen appeared to be the most significant factor contributing to the severity of ulcerative mucositis. While the majority of ulcers occurred on movable nonkeratinized mucosa in BMT recipients, the usual sites of reactivation of intraoral HSV are nonmovable, keratinized mucosa. We conclude that HSV is probably not a major etiologic agent of mucositis in BMT recipients and that acyclovir is an effective agent in preventing HSV reactivation.
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Affiliation(s)
- S B Woo
- Harvard School of Dental Medicine, Brigham and Women's Hospital, Boston, MA 02115
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He SH, Woo SB, DerVartanian DV, Le Gall J, Peck HD. Effects of acetylene on hydrogenases from the sulfate reducing and methanogenic bacteria. Biochem Biophys Res Commun 1989; 161:127-33. [PMID: 2543405 DOI: 10.1016/0006-291x(89)91570-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [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] [Indexed: 01/01/2023]
Abstract
The effect of acetylene on the activity of the three types of hydrogenase from the anaerobic sulfate reducing bacteria has been investigated. The (Fe) hydrogenase is resistant to inhibition by acetylene while the nickel-containing hydrogenases are inhibited by acetylene with the (NiFe) hydrogenase being 10-50 fold more sensitive than the (NiFeSe) hydrogenase. In addition the Ni(III) EPR signal (g approximately 2.3) of the "as isolated" (NiFe) hydrogenase was significantly decreased in intensity upon exposure to acetylene.
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Affiliation(s)
- S H He
- Department of Biochemistry, School of Chemical Sciences, University of Georgia, Athens 30602
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Woo SB, Eisenbud L, Kleiman M, Assael N. Odontogenic keratocysts in the anterior maxilla: report of two cases, one simulating a nasopalatine cyst. Oral Surg Oral Med Oral Pathol 1987; 64:463-5. [PMID: 3477769 DOI: 10.1016/0030-4220(87)90154-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two odontogenic keratocysts occurring in the anterior portion of the maxilla, an unusual location, are reported. In one instance, the clinical and radiographic features simulated a nasopalatine cyst. It is suggested that a likely origin for an odontogenic keratocyst in this location is the primordium of a mesiodens that fails to develop.
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Affiliation(s)
- S B Woo
- Department of Laboratories, Long Island Jewish Medical Center, New Hyde Park, N.Y
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Woo SB, Smith-Williams JE, Sciubba JJ, Lipper S. Peripheral ameloblastoma of the buccal mucosa: case report and review of the English literature. Oral Surg Oral Med Oral Pathol 1987; 63:78-84. [PMID: 3468468 DOI: 10.1016/0030-4220(87)90344-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An unusual case is presented of a peripheral ameloblastoma arising on the buccal mucosa, which brings the total number of such cases to three. The occurrence and pathogenesis of peripheral ameloblastomas in general, are reviewed, especially with reference to the basal cell carcinoma.
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Stehman RM, Woo SB, Helmy EM. Role of core size in the photoelectron spectrum of ions with multiple detachment orbitals. Phys Rev A Gen Phys 1986; 34:2585-2590. [PMID: 9897571 DOI: 10.1103/physreva.34.2585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Stehman RM, Clodius WB, Grot S, Woo SB, Helmy EM. Zero-core-contribution calculation of photodetachment cross sections and photoelectron spectra of transition-metal anions. Phys Rev A Gen Phys 1985; 31:297-309. [PMID: 9895477 DOI: 10.1103/physreva.31.297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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