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Dive into the research topics where Richard McGowan is active.

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Featured researches published by Richard McGowan.


Journal of The American Academy of Orthopaedic Surgeons | 2009

Treatment of osteoarthritis of the knee (nonarthroplasty).

John C. Richmond; David J. Hunter; Jay J. Irrgang; Morgan H. Jones; Bruce A. Levy; Robert G. Marx; Lynn Snyder-Mackler; William C. Waiters; Robert H. Haralson; Charles M. Turkelson; Janet L. Wies; Kevin Boyer; Sara Anderson; Justin St Andre; Patrick Sluka; Richard McGowan

The clinical practice guideline was explicitly developed to include only treatments less invasive than knee replacement (ie, arthroplasty). Patients with symptomatic osteoarthritis of the knee are to be encouraged to participate in self-management educational programs and to engage in self-care, as well as to lose weight and engage in exercise and quadriceps strengthening. The guideline recommends taping for short-term relief of pain as well as analgesics and intra-articular corticosteroids, but not glucosamine and/or chondroitin. Patients need not undergo needle lavage or arthroscopy with débridement or lavage. Patients may consider partial meniscectomy or loose body removal or realignment osteotomy, as conditions warrant. Use of a free-floating interpositional device should not be considered for symptomatic unicompartmental osteoarthritis of the knee. Lateral heel wedges should not be prescribed for patients with symptomatic medial compartmental osteoarthritis of the knee. The work group was unable either to recommend or not recommend the use of braces with either valgus- or varus-directing forces for patients with medial unicompartmental osteoarthritis; the use of acupuncture or of hyaluronic acid; or osteotomy of the tibial tubercle for isolated symptomatic patellofemoral osteoarthritis.


Journal of Bone and Joint Surgery, American Volume | 2010

American Academy of Orthopaedic Surgeons clinical practice guideline on the treatment of osteoarthritis (OA) of the knee.

John C. Richmond; David J. Hunter; James J. Irrgang; Morgan H. Jones; Lynn Snyder-Mackler; Daniel Van Durme; Cheryl Rubin; Elizabeth Matzkin; Robert G. Marx; Bruce A. Levy; William C. Watters; Michael J. Goldberg; Michael W. Keith; Robert H. Haralson; Charles M. Turkelson; Janet L. Wies; Sara Anderson; Kevin Boyer; Patrick Sluka; Justin St Andre; Richard McGowan

Summary of Recommendations The following is a summary of the recommendations in the AAOS’ clinical practice guideline, The Treatment of Osteoarthritis (OA) of the Knee. This guideline was explicitly developed to include only treatments less invasive than knee replacement (arthroplasty). This summary does not contain rationales that explain how and why these recommendations were developed nor does it contain the evidence supporting these recommendations. All readers of this summary are strongly urged to consult the full guideline and evidence report for this information. We are confident that those who read the full guideline and evidence report will also see that the recommendations were developed using systematic evidence-based processes designed to combat bias, enhance transparency, and promote reproducibility. This summary of recommendations is not intended to stand alone. Treatment decisions should be made in light of all circumstances presented by the patient. Treatments and procedures applicable to the individual patient rely on mutual communication between patient, physician and other healthcare practitioners. Patient Education and Lifestyle Modification


Archives of Oral Biology | 2015

The functions of human saliva: A review sponsored by the World Workshop on Oral Medicine VI

C. Dawes; Anne Marie Lynge Pedersen; Alessandro Villa; Jörgen Ekström; Gordon Proctor; Arjan Vissink; Dj Aframian; Richard McGowan; Ardita Aliko; Nagamani Narayana; Ying Wai Sia; Revan Kumar Joshi; Siri Beier Jensen; Alexander Ross Kerr; Andy Wolff

This narrative review of the functions of saliva was conducted in the PubMed, Embase and Web of Science databases. Additional references relevant to the topic were used, as our key words did not generate references which covered all known functions of saliva. These functions include maintaining a moist oral mucosa which is less susceptible to abrasion, and removal of micro-organisms, desquamated epithelial cells, leucocytes and food debris by swallowing. The mucins form a slimy coating on all surfaces in the mouth and act as a lubricant during such processes as mastication, formation of a food bolus, swallowing and speaking. Saliva provides the fluid in which solid tastants may dissolve and distributes tastants around the mouth to the locations of the taste buds. The hypotonic unstimulated saliva facilitates taste recognition. Salivary amylase is involved in digestion of starches. Saliva acts as a buffer to protect oral, pharyngeal and oesophageal mucosae from orally ingested acid or acid regurgitated from the stomach. Saliva protects the teeth against acid by contributing to the acquired enamel pellicle, which forms a renewable lubricant between opposing tooth surfaces, by being supersaturated with respect to tooth mineral, by containing bicarbonate as a buffer and urea and by facilitating clearance of acidic materials from the mouth. Saliva contains many antibacterial, antiviral and antifungal agents which modulate the oral microbial flora in different ways. Saliva also facilitates the healing of oral wounds. Clearly, saliva has many functions which are needed for proper protection and functioning of the human body.


Journal of The American Academy of Orthopaedic Surgeons | 2009

Treatment of carpal tunnel syndrome.

Michael W. Keith; Victoria Masear; Peter C. Amadio; Michael T. Andary; Richard W. Barth; Brent Graham; Kevin C. Chung; Kent Maupin; William C. Watters; Robert H. Haralson; Charles M. Turkelson; Janet L. Wies; Richard McGowan

&NA; In September 2008, the Board of Directors of the American Academy of Orthopaedic Surgeons approved a clinical practice guideline on the treatment of carpal tunnel syndrome. This guideline was subsequently endorsed by the American Association of Neurological Surgeons and the Congress of Neurological Surgeons. The guideline makes nine specific recommendations: A course of nonsurgical treatment is an option in patients diagnosed with carpal tunnel syndrome. Early surgery is an option with clinical evidence of median nerve denervation or when the patient so elects. Another nonsurgical treatment or surgery is suggested when the current treatment fails to resolve symptoms within 2 to 7 weeks. Sufficient evidence is not available to provide specific treatment recommendations for carpal tunnel syndrome associated with such conditions as diabetes mellitus and coexistent cervical radiculopathy. Local steroid injection or splinting is suggested before considering surgery. Oral steroids or ultrasound are options. Carpal tunnel release is recommended as treatment. Heat therapy is not among the options to be used. Surgical treatment of carpal tunnel syndrome by complete division of the flexor retinaculum is recommended. Routine use of skin nerve preservation and epineurotomy is not suggested when carpal tunnel release is performed. Prescribing preoperative antibiotics for carpal tunnel surgery is an option. It is suggested that the wrist not be immobilized postoperatively after routine carpal tunnel surgery. It is suggested that instruments such as the Boston Carpal Tunnel Questionnaire and the Disabilities of the Arm, Shoulder, and Hand questionnaire be used to assess patient responses to carpal tunnel syndrome treatment for research.


Journal of Bone and Joint Surgery - Series A | 2010

American Academy of Orthopaedic Surgeons Clinical Practice Guideline on The Treatment of Carpal Tunnel Syndrome

Michael W. Keith; Victoria Masear; Kevin C. Chung; Peter C. Amadio; Michael T. Andary; Richard W. Barth; Kent Maupin; Brent Graham; William C. Watters; Charles M. Turkelson; Robert H. Haralson; Janet L. Wies; Richard McGowan

Summary of Recommendations The following is a summary of the recommendations in the AAOS’ clinical practice guideline, The Treatment of Carpal Tunnel Syndrome. This summary does not contain rationales that explain how and why these recommendations were developed nor does it contain the evidence supporting these recommendations. All readers of this summary are strongly urged to consult the full guideline and evidence report for this information. We are confident that those who read the full guideline and evidence report will also see that the recommendations were developed using systematic evidence-based processes designed to combat bias, enhance transparency, and promote reproducibility. This summary of recommendations is not intended to stand alone. The American Association of Neurological Surgeons and the Congress of Neurological Surgeons have endorsed this guideline.


Oral Surgery, Oral Medicine, Oral Pathology, and Oral Radiology | 2015

World Workshop on Oral Medicine VI: clinical implications of medication-induced salivary gland dysfunction

Ardita Aliko; Andy Wolff; C. Dawes; Dj Aframian; Gordon Proctor; Jörgen Ekström; Nagamani Narayana; Alessandro Villa; Ying Wai Sia; Revan Kumar Joshi; Richard McGowan; Siri Beier Jensen; A. Ross Kerr; Anne Marie Lynge Pedersen; Arjan Vissink

OBJECTIVE This study aimed to systematically review the available literature on the clinical implications of medication-induced salivary gland dysfunction (MISGD). STUDY DESIGN The systematic review was performed using PubMed, Embase, and Web of Science (through June 2013). Studies were assessed for degree of relevance and strength of evidence, based on whether clinical implications of MISGD were the primary study outcomes, as well as on the appropriateness of study design and sample size. RESULTS For most purported xerogenic medications, xerostomia was the most frequent adverse effect. In the majority of the 129 reviewed papers, it was not documented whether xerostomia was accompanied by decreased salivary flow. Incidence and prevalence of medication-induced xerostomia varied widely and was often associated with number and dose of medications. Xerostomia was most frequently reported to be mild-to-moderate in severity. Its onset occurred usually in the first weeks of treatment. There was selected evidence that medication-induced xerostomia occurs more frequently in women and older adults and that MISGD may be associated with other clinical implications, such as caries or oral mucosal alterations. CONCLUSIONS The systematic review showed that MISGD constitutes a significant burden in many patients and may be associated with important negative implications for oral health.


Clinical Oral Investigations | 2015

World Workshop on Oral Medicine VI: a systematic review of medication-induced salivary gland dysfunction: prevalence, diagnosis, and treatment

Alessandro Villa; Andy Wolff; Dj Aframian; Arjan Vissink; Jörgen Ekström; Gordon Proctor; Richard McGowan; Nagamani Narayana; Ardita Aliko; Ying Wai Sia; Revan Kumar Joshi; Siri Beier Jensen; Alexander Ross Kerr; C. Dawes; Anne Marie Lynge Pedersen

ObjectivesMedication-induced salivary gland dysfunction (MISGD) causes significant morbidity resulting in decreased quality of life. This systematic review assessed the literature on the prevalence, diagnosis, treatment, and prevention of MISGD.Materials and methodsElectronic databases were searched for articles related to MISGD through June 2013. Four independent reviewers extracted information regarding study design, study population, interventions, outcomes, and conclusions for each article. Only papers with acceptable degree of relevance, quality of methodology, and strength of evidence were retained for further analysis.ResultsThere were limited data on the epidemiology of MISGD. Furthermore, various methods were used to assess salivary flow rate or xerostomia. Preventive and therapeutic strategies included substitution of medications, oral, or systemic therapy with sialogogues, use of saliva substitutes or of electro-stimulating devices. Although there are promising approaches to improve salivary gland function, most studies are characterized by small numbers and heterogeneous methods.ConclusionsPhysicians and dentists should identify the medications associated with xerostomia and salivary gland dysfunction through a thorough medical history. Preferably, health care providers should measure the unstimulated and stimulated whole salivary flow rates of all their patients so that these values can be used as a baseline to rate the complaints of patients who subsequently claim to experience xerostomia or salivary gland dysfunction as well as the possibilities of effectively treating this condition.Clinical relevanceMISGD remains a major burden for the population. This systematic review provides a contemporary in-depth description of the diagnosis and treatment of MISGD.


Drugs in R & D | 2017

A Guide to Medications Inducing Salivary Gland Dysfunction, Xerostomia, and Subjective Sialorrhea: A Systematic Review Sponsored by the World Workshop on Oral Medicine VI

Andy Wolff; Revan Kumar Joshi; Jörgen Ekström; Dj Aframian; Anne Marie Lynge Pedersen; Gordon Proctor; Nagamani Narayana; Alessandro Villa; Ying Wai Sia; Ardita Aliko; Richard McGowan; Alexander Ross Kerr; Siri Beier Jensen; Arjan Vissink; C. Dawes

BackgroundMedication-induced salivary gland dysfunction (MISGD), xerostomia (sensation of oral dryness), and subjective sialorrhea cause significant morbidity and impair quality of life. However, no evidence-based lists of the medications that cause these disorders exist.ObjectiveOur objective was to compile a list of medications affecting salivary gland function and inducing xerostomia or subjective sialorrhea.Data SourcesElectronic databases were searched for relevant articles published until June 2013. Of 3867 screened records, 269 had an acceptable degree of relevance, quality of methodology, and strength of evidence. We found 56 chemical substances with a higher level of evidence and 50 with a moderate level of evidence of causing the above-mentioned disorders. At the first level of the Anatomical Therapeutic Chemical (ATC) classification system, 9 of 14 anatomical groups were represented, mainly the alimentary, cardiovascular, genitourinary, nervous, and respiratory systems. Management strategies include substitution or discontinuation of medications whenever possible, oral or systemic therapy with sialogogues, administration of saliva substitutes, and use of electro-stimulating devices.LimitationsWhile xerostomia was a commonly reported outcome, objectively measured salivary flow rate was rarely reported. Moreover, xerostomia was mostly assessed as an adverse effect rather than the primary outcome of medication use. This study may not include some medications that could cause xerostomia when administered in conjunction with others or for which xerostomia as an adverse reaction has not been reported in the literature or was not detected in our search.ConclusionsWe compiled a comprehensive list of medications with documented effects on salivary gland function or symptoms that may assist practitioners in assessing patients who complain of dry mouth while taking medications. The list may also prove useful in helping practitioners anticipate adverse effects and consider alternative medications.


Oral Surgery, Oral Medicine, Oral Pathology, and Oral Radiology | 2015

World Workshop on Oral Medicine VI: a systematic review of the treatment of mucocutaneous pemphigus vulgaris

Roddy McMillan; J. Taylor; M. Shephard; R. Ahmed; Marco Carrozzo; Jane Setterfield; Sergei A. Grando; M. Mignogna; Michal Kuten-Shorrer; T. Musbah; Alessandra Elia; Richard McGowan; Alexander Ross Kerr; Martin S. Greenberg; Tim Hodgson; David A. Sirois

OBJECTIVE To determine the efficacy and safety of interventions for pemphigus vulgaris (PV). STUDY DESIGN We conducted a systematic review from 2003 to 2013 according to the Cochrane Collaboration methodology. Randomized controlled trials (RCTs) or controlled clinical trials (CCTs) and observational studies were conducted along with diagnosis confirmed by clinical, histopathologic, and immunofluorescence criteria. Primary outcomes were disease remission and mortality; several relevant secondary outcomes were also included. RESULTS Fourteen RCTs or CCTs and 110 observational studies were included in the final analyses. RCTs or CCTs demonstrated considerable heterogeneity in outcome measures, and all had a high risk of bias for at least 1 of 8 domains. Of the studies, 96.8% (120) described the use of oral corticosteroids. Azathioprine and mycophenolate-mofetil were the most commonly cited treatments. An increasing number of studies described biologic therapies (rituximab, intravenous immunoglobulin [IVIg]). Evidence supporting recent comprehensive treatment guidelines was reviewed. CONCLUSIONS We found persisting wide variations in treatment practice and inadequate quality of research supporting optimal PV treatment.


Reproductive Toxicology | 2017

Exposure to benzophenone-3 and reproductive toxicity: A systematic review of human and animal studies

Marya Ghazipura; Richard McGowan; Alan A. Arslan; Tanzib Hossain

Hydroxy-4-methoxybenzophenone, also known as benzophenone-3 (BP-3), is a commonly used ultraviolet filter in skincare and as a food additive. Large concentrations of similar phenolic compounds have been detected in urine, amniotic fluid, and placental tissue, thereby raising questions about its impact on reproduction. The objective of this paper was to investigate the reproductive toxicity of BP-3 in humans and animals. In humans, studies showed that high levels of BP-3 exposure could be linked to an increase in male birth weight but a decline in female birth weight and male gestational age. In fish, BP-3 exposure resulted in a decline in egg production, hatching, and testosterone, along with a down-regulation of steroidogenic genes. In rats, a decrease in epididymal sperm density and a prolonged estrous cycle for females was observed. These positive associations may be attributed to an altered estrogen and testosterone balance as a result of endocrine disrupting effects of BP-3. However, the current body of literature is limited by non-uniform exposure and outcome measurements in studies both across and within species and future studies will need to be conducted in a standardized fashion to allow for a more significant contribution to the literature that allows for better comparison across studies.

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Alessandro Villa

Brigham and Women's Hospital

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Michael W. Keith

Case Western Reserve University

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Nagamani Narayana

University of Nebraska Medical Center

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C. Dawes

University of Manitoba

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Andy Wolff

Tel Aviv Sourasky Medical Center

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Dj Aframian

Hebrew University of Jerusalem

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