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Siddiquee S, Marshman G, Sallis JA, Potter JA. Smoking cessation outcomes in patients with hidradenitis suppurativa: a retrospective analysis. Clin Exp Dermatol 2021; 46:945-946. [PMID: 33576526 DOI: 10.1111/ced.14612] [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] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 11/30/2022]
Affiliation(s)
- S Siddiquee
- Dermatology Unit, Flinders Medical Centre, Bedford Park, SA, Australia.,Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - G Marshman
- Dermatology Unit, Flinders Medical Centre, Bedford Park, SA, Australia.,College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
| | - J A Sallis
- Dermatology Unit, Flinders Medical Centre, Bedford Park, SA, Australia
| | - J A Potter
- Plastic and Reconstructive Surgery Unit, Flinders Medical Centre, Bedford Park, SA, Australia
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Potter JA, Hodgson CI, Broadhurst M, Howell L, Gilbert J, Willems MET, Perkins IC. Correction to: Effects of New Zealand blackcurrant extract on sport climbing performance. Eur J Appl Physiol 2019; 120:77. [PMID: 31776695 DOI: 10.1007/s00421-019-04268-6] [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: 11/28/2022]
Abstract
The authors would like to correct the following errors in the online publication of the article. Incorrect values for % changes for climb duration were provided in the abstract, results and discussion session. The % changes in climb duration was 15% with intake of New Zealand blackcurrant extract and -15% for the placebo condition. This correction does not change the conclusions derived from the study.
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Affiliation(s)
- J A Potter
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK.
| | - C I Hodgson
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - M Broadhurst
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - L Howell
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - J Gilbert
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - M E T Willems
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - I C Perkins
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
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Potter JA, Hodgson CI, Broadhurst M, Howell L, Gilbert J, Willems MET, Perkins IC. Effects of New Zealand blackcurrant extract on sport climbing performance. Eur J Appl Physiol 2019; 120:67-75. [PMID: 31515632 DOI: 10.1007/s00421-019-04226-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 04/12/2019] [Accepted: 09/04/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE Blood flow to skeletal muscles and removal of metabolic by-products during a sport climb are essential to optimise performance and recovery. New Zealand blackcurrant (NZBC) extract has enhanced blood flow and performance in other exercise modalities. We examined the effect of NZBC extract on sport climbing performance and recovery. METHODS The study employed a double-blind, randomised, crossover design. Male sport climbers (n = 18, age 24 ± 6 years, height 179 ± 6 cm, mass 71.4 ± 7.8 kg, French grade 6a-8b) undertook 7 days supplementation of NZBC extract (600 mg day-1 CurraNZ™ containing 210 mg anthocyanins) or a placebo (PL). Climbing ability was assessed through hang time (HT), pull-ups and total climbing time (TCT) in 3 intermittent climbing bouts on a Treadwall M6 rotating climbing wall to exhaustion with 20 min recovery between climbs. Heart rate (HR), blood lactate (BL), forearm girth (FG) and hand grip strength (HGS) were recorded. RESULTS NZBC extract had no effect on pull-ups but provided a trend for higher HT and significantly improved TCT (+23%) compared to PL (-11%) over three climbs. HR, BL, FG and HGS all indicated that 20 min was insufficient for physiological recovery between the three climbing bouts indicating accumulative fatigue regardless of supplement condition. CONCLUSION Despite indices of progressive fatigue across three bouts of climbing, NZBC extract facilitated not only a maintenance of TCT but an improved climbing endurance as compared with the PL condition. Blackcurrant anthocyanin-derived metabolites seem to affect physiological responses that facilitate sport climbing performance.
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Affiliation(s)
- J A Potter
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK.
| | - C I Hodgson
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - M Broadhurst
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - L Howell
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - J Gilbert
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - M E T Willems
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
| | - I C Perkins
- Institute of Sport, University of Chichester, College Lane, Chichester, PO19 6PE, UK
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Bakaysa SL, Potter JA, Hoang M, Han CS, Guller S, Norwitz ER, Abrahams VM. Single- and double-stranded viral RNA generate distinct cytokine and antiviral responses in human fetal membranes. Mol Hum Reprod 2014; 20:701-8. [PMID: 24723465 DOI: 10.1093/molehr/gau028] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
There has been growing interest in the role of viral infections and their association with adverse pregnancy outcomes. However, little is known about the impact viral infections have on the fetal membranes (FM). Toll-like receptors (TLR) are thought to play a role in infection-associated inflammation at the maternal-fetal interface. Therefore, the objective of this study was to characterize the cytokine profile and antiviral response in human FMs exposed to viral dsRNA, which activates TLR3, and viral ssRNA, which activates TLR8; and to determine the mechanisms involved. The viral dsRNA analog, Poly(I:C), induced up-regulated secretion of MIP-1α, MIP-1β, RANTES and TNF-α, and down-regulated interleukin (IL)-2 and VEGF secretion. In contrast, viral ssRNA induced a broader panel of cytokines in the FMs by up-regulating the secretion of IL-1β, IL-2, IL-6, G-CSF, MCP-1, MIP-1α, MIP-1β, RANTES, TNF-α and GRO-α. Using inhibitory peptides against TLR adapter proteins, FM secretion of MIP-1β and RANTES in response to Poly(I:C) was MyD88 dependent; MIP-1α secretion was dependent on MyD88 and TRIF; and TNF-α production was independent of MyD88 and TRIF. Viral ssRNA-induced FM secretion of IL-1β, IL-2, IL-6, G-CSF, MIP-1α, RANTES and GRO-α was dependent on MyD88 and TRIF; MIP-1β was dependent upon TRIF, but not MyD88; and TNF-α and MCP-1 secretion was dependent on neither. Poly(I:C), but not ssRNA, induced an FM antiviral response by up-regulating the expression of IFNβ, myxovirus-resistance A, 2',5'-oligoadenylate synthetase and apolipoprotein B mRNA-editing enzyme-catalytic polypeptide-like 3G. These findings demonstrate that human FMs respond to two viral signatures by generating distinct inflammatory cytokine/chemokine profiles and antiviral responses through different mechanisms.
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Affiliation(s)
- S L Bakaysa
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - J A Potter
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - M Hoang
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - C S Han
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - S Guller
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - E R Norwitz
- Department of Obstetrics & Gynecology, Tufts Medical Center, Boston, MA, USA
| | - V M Abrahams
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
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Potter JA, Liu J, Hull R, Bright SD, Higgins S, Bost L, Thaker A, Matthews R, O'Regan R, Gabram-Mendola S. Assessment of clinical trials knowledge and beliefs in cancer patients treated in an urban public hospital serving predominantly African American patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e16511] [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: 11/20/2022] Open
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Abstract
Significant advances within the field of laboratory automation and instrumentation have greatly benefited the pharmaceutical industry in its quest to discover, develop and monitor the quality of its products. Necessitated by the need for efficiency and greater productivity, faster and more cost-effective means of analyses exist in the form of devices made up of complex electromechanical components, all logically controlled and most with the capability to interface with sophisticated information systems. This benefit does come with a price, a greater responsibility to ensure data quality while complying with increased regulatory requirements. Commitment to this responsibility presents a substantial challenge to scientists and managers throughout the industry. Due diligence must be demonstrated. A comprehensive evaluation of every laboratory system utilized, a solid plan of action for correcting any known deficiencies including upgrades or complete replacement, and an accurate monitoring procedure with the ability to measure progress are all absolute necessities to ensure success. Crossfunctional team effort and communication must transpire with full managerial support. Vendors need to be audited, made aware of any functional or quality inadequacies they possess as well as the pharmaceutical industry's expectation for these shortcomings to be rapidly corrected. Suppliers of these systems should also be encouraged to provide complete 'off-the-shelf solutions' to eliminate the need for in-house customization. The requirements for regulatory compliance in today's electronic environment have been well publicized. The players involved are not only listening, but also taking the necessary steps to retain and improve efficiency without sacrificing quality. With the proper measures, planning and action, a highly automated, cost-effective and compliant laboratory operation can become a reality.
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Affiliation(s)
- J A Potter
- Glaxo Wellcome, Worldwide Manufacturing and Supply, 1011 North Arendell Avenue, Zebulon, NC 27597, USA
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Potter JA. Diagnostic testing for coronary artery disease. Lippincotts Prim Care Pract 1999; 3:479-85. [PMID: 10795214] [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] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- J A Potter
- Cardiac Consultants Chartered, Bethesda, Maryland 20817, USA
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Potter JA, Press MC, Callaghan TV, Lee JA. Growth responses of Polytrichum commune and Hylocomium splendens to simulated environmental change in the sub-arctic. New Phytol 1995; 131:533-541. [PMID: 33863118 DOI: 10.1111/j.1469-8137.1995.tb03089.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Total moss cover and the growth responses of the two dominant bryophytes within a sub-arctic heath ecosystem, Polytrichum commune Hedw, and Hylocomium splendens (Hedw.) Br. Eur., were investigated in response to simulated environmental change. Temperature, water supply and nutrients (NPK fertilizer) were increased in a factorial field study in Swedish Lapland. After 3 yr of treatment, total moss caver on fertilized plots was found to be less than 50% of that on unfertilized plots. H. splendens made a smaller contribution to total cover, and also had fewer shoots on the fertilizer treated plots. The relative contribution of P. commune to the bryophyte community was greater on the fertilized plots, although total shoot numbers of P. commune were not greater. There was, however, a larger number of dead shoots of P. commune on the fertilized plots. Total moss cover, relative contribution to moss cover by P. commune and H. splendens, and the numbers of shoots of these two species, were unresponsive to both the temperature and water treatments. The growth of the current year's segment of H. splendens was retarded by both the fertilizer and temperature treatments. Furthermore, the dry weight of the physiologically active shoot was found to be significantly altered by all three treatments. The current year's growth of P. commune showed increases in d. wt and morphological parameters in response to the fertilizer treatment. There were also interactive effects of both the fertilizer and temperature treatments with the water treatment on the current year's stem length increment.
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Affiliation(s)
- J A Potter
- Sheffield Centre for Arctic Ecology, Tapton Experimental Gardens, University of Sheffield, 26 Taptonville Road, Sheffield S10 5BR, UK
| | - M C Press
- Department of Animal and Plant. Sciences, University of Sheffield, Sheffield S10 2TN, UK
| | - T V Callaghan
- Sheffield Centre for Arctic Ecology, Tapton Experimental Gardens, University of Sheffield, 26 Taptonville Road, Sheffield S10 5BR, UK
| | - J A Lee
- Department of Animal and Plant. Sciences, University of Sheffield, Sheffield S10 2TN, UK
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Robinson CH, Wookey PA, Parsons AN, Potter JA, Callaghan TV, Lee JA, Press MC, Welker JM. Responses of Plant Litter Decomposition and Nitrogen Mineralisation to Simulated Environmental Change in a High Arctic Polar Semi-Desert and a Subarctic Dwarf Shrub Heath. OIKOS 1995. [DOI: 10.2307/3545996] [Citation(s) in RCA: 109] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Wookey PA, Parsons AN, Welker JM, Potter JA, Callaghan TV, Lee JA, Press MC. Comparative Responses of Phenology and Reproductive Development to Simulated Environmental Change in Sub-Arctic and High Arctic Plants. OIKOS 1993. [DOI: 10.2307/3545361] [Citation(s) in RCA: 187] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Archer RL, Cunningham AC, Moore PF, Potter JA, Bliven ML, Otterness IG. Effects of dazmegrel, piroxicam and cyclophosphamide on the NZB/W model of SLE. Agents Actions 1989; 27:369-74. [PMID: 2801326 DOI: 10.1007/bf01972825] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
To investigate the potential importance of prostaglandins and thromboxane in systemic lupus erythematosus (SLE), the effects of a nonsteroidal antiinflammatory drug (piroxicam) and a thromboxane synthetase inhibitor (dazmegrel) were examined on survival, proteinuria, food consumption, body weight, and peripheral lymphocyte subset distribution in the NZB/W model of autoimmune lupus disease. The effect of an immunosuppressant (cyclophosphamide) known to be effective in the treatment of murine lupus on these parameters was also examined. Cyclophosphamide at 25 mg/kg ip weekly prolonged survival, inhibited proteinuria and prevented the characteristic decline in peripheral T cells and the relative increase in B cells seen in NZB/W lupus disease while having no apparent effect on body weight or food consumption. Neither dazmegrel at 50 or 200 mg/kg/day in the diet nor piroxicam at 2 mg/kg/day in the diet had any significant effects on these parameters.
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Affiliation(s)
- R L Archer
- Pfizer Central Research, Groton, CT 06340
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Abstract
Twelve cases of fracture of the orbital plate of the frontal bone are reviewed to clarify this important clinical problem and to suggest satisfactory methods of management. Common signs and symptoms include forehead laceration and deformity, and fracture of the frontal sinus. Loss of vision can occur, and in the seeing eye, diplopia can develop in several fields of gaze. Downward or upward projection of the orbital plate of the frontal bone can cause exophthalmos or enophthalmos. Cerebrospinal fluid leak, with or without meningitis, and seizures can also be part of the syndrome. Effective treatment consists of repairing or obliterating the frontal sinus, reducing the orbital root fracture, and repositioning the globe. Rib or iliac crest grafts, acrylic implants, and temporalis muscle-galea flaps are useful in correcting the deformity and restoring appropriate function. Long-term follow-up examinations are an important part of patient care.
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Affiliation(s)
- J A Potter
- Department of Otolaryngology, Harper-Grace Hospitals, Wayne State University School of Medicine, Detroit, Michigan 48201
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