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Autin P, Deshayes S, Lea J, Boisgerault N, Dupré E, Labarrière N, Leguevel R, Fonteneau JF, Blanquart C, Fradin D. The DCMU Herbicide Shapes T-cell Functions By Modulating Micro-RNA Expression Profiles. Front Immunol 2022; 13:925241. [PMID: 35967413 PMCID: PMC9366666 DOI: 10.3389/fimmu.2022.925241] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/21/2022] [Indexed: 11/25/2022] Open
Abstract
DCMU [N-(3,4-dichlorophenyl)-N-dimethylurea] or diuron is a widely used herbicide, which can cause adverse effects on human, especially on immune cells, due to their intrinsic properties and wide distribution. These cells are important for fighting not only against virus or bacteria but also against neoplastic cell development. We developed an approach that combines functional studies and miRNA and RNA sequencing data to evaluate the effects of DCMU on the human immune response against cancer, particularly the one carried out by CD8+ T cells. We found that DCMU modulates the expression of miRNA in a dose-dependent manner, leading to a specific pattern of gene expression and consequently to a diminished cytokine and granzyme B secretions. Using mimics or anti-miRs, we identified several miRNA, such as hsa-miR-3135b and hsa-miR-21-5p, that regulate these secretions. All these changes reduce the CD8+ T cells’ cytotoxic activity directed against cancer cells, in vitro and in vivo in a zebrafish model. To conclude, our study suggests that DCMU reduces T-cell abilities, participating thus to the establishment of an environment conducive to cancer development.
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Affiliation(s)
- Pierre Autin
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Sophie Deshayes
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Juliette Lea
- Université de Rennes, ImPACcell Plateform, BIOSIT, Rennes, France
| | - Nicolas Boisgerault
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Emilie Dupré
- Nantes Université, Univ Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
| | - Nathalie Labarrière
- Nantes Université, Univ Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
| | - Rémy Leguevel
- Université de Rennes, ImPACcell Plateform, BIOSIT, Rennes, France
| | - Jean-François Fonteneau
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Christophe Blanquart
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
| | - Delphine Fradin
- Nantes Université, INSERM UMR1307, CNRS UMR6075, Université d’Angers, CRCI2NA, Nantes, France
- *Correspondence: Delphine Fradin,
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Gosling H, Pratt D, Montgomery H, Lea J. The relationship between minority stress factors and suicidal ideation and behaviours amongst transgender and gender non-conforming adults: A systematic review. J Affect Disord 2022; 303:31-51. [PMID: 34958812 DOI: 10.1016/j.jad.2021.12.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 11/10/2021] [Accepted: 12/19/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND The impact of Minority Stress (MS) upon suicidal ideation and behaviours amongst Transgender and Gender Non-Conforming (TGNC) adults is not sufficiently understood, hence our intervention efforts on an individual and societal level are limited. This review aims to evaluate recent literature that reports on the association between MS and suicidal ideation and behaviours amongst TGNC adults. METHODS PsycINFO, Web of Science, MEDLINE, CINAHL and EMBASE were systematically searched for relevant articles. Peer reviewed and grey literature were considered. Included papers reported quantitative analyses on associations between MS factors and suicidal ideation and behaviours amongst TGNC adults. The quality of papers was assessed. RESULTS 28 papers were identified as eligible. Findings suggested positive associations between external and internal minority stressors and suicidal ideation and behaviour. Dysfunctional individual coping was associated with a greater likelihood of suicide attempts. Community resilience was negatively associated with suicidal outcomes, but did not consistently buffer the effects of minority stress. LIMITATIONS Overall quality of included papers was 'poor'. Almost all papers were cross-sectional by design, therefore causality cannot be inferred. Many papers measured variables using non-standardised measures undermining the reliability and validity of reported results. CONCLUSIONS Findings offer support to the application of MS theory to the understanding of suicidal ideation and behaviour amongst TGNC. Future research should use standardised measures and longitudinal designs to better support the investigation of directionality and causality. More research is needed to understand the complex interactions between minority stress factors and the role of resilience in this population.
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Affiliation(s)
- H Gosling
- Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, UK
| | - D Pratt
- Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, UK
| | - H Montgomery
- Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, UK
| | - J Lea
- Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, UK.
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Yong M, Young E, Lea J, Foggin H, Zaia E, Kozak FK, Westerberg BD. Commentary: Effect of cochlear implantation on vestibular function in children: A scoping review. Front Pediatr 2022; 10:1101540. [PMID: 36619515 PMCID: PMC9811810 DOI: 10.3389/fped.2022.1101540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Affiliation(s)
- M Yong
- Division of Otolaryngology - Head and Neck Surgery, University of British Columbia, Vancouver, BC, Canada
| | - E Young
- Southwest Health, Warrnambool, VIC, Australia
| | - J Lea
- Division of Otolaryngology - Head and Neck Surgery, University of British Columbia, Vancouver, BC, Canada.,Division of Otolaryngology - Head and Neck Surgery, St. Paul's Hospital, Vancouver, BC, Canada
| | - H Foggin
- Division of Otolaryngology - Head and Neck Surgery, University of British Columbia, Vancouver, BC, Canada
| | - E Zaia
- Audio-Vestibular Clinic, Vancouver, BC, Canada
| | - F K Kozak
- Division of Otolaryngology - Head and Neck Surgery, University of British Columbia, Vancouver, BC, Canada.,Division of Otolaryngology - Head and Neck Surgery, British Columbia Children's Hospital, Vancouver, BC, Canada
| | - B D Westerberg
- Division of Otolaryngology - Head and Neck Surgery, University of British Columbia, Vancouver, BC, Canada.,Division of Otolaryngology - Head and Neck Surgery, St. Paul's Hospital, Vancouver, BC, Canada
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Small A, Lea J, Niemeyer D, Hughes J, McLean D, McLean J, Ralph J. Development of a microwave stunning system for cattle 2: Preliminary observations on behavioural responses and EEG. Res Vet Sci 2019; 122:72-80. [DOI: 10.1016/j.rvsc.2018.11.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/01/2018] [Accepted: 11/11/2018] [Indexed: 11/28/2022]
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Wahner Hendrickson A, Costello B, Jewell A, Kennedy V, Fleming G, Corr B, Taylor S, Lea J, Reid J, Swisher E, Satele D, Allred J, Lensing J, Ivy S, Erlichman C, Adjei A, Kaufmann S. A phase II clinical trial of veliparib and topotecan in patients with platinum resistant ovarian cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy285.208] [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: 11/12/2022] Open
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Ogundipe LO, Jorsh M, Wain B, Lea J. Onset of clinical improvement of depressive illness following electroconvulsive therapy. Psychiatr bull 2018. [DOI: 10.1192/pb.23.8.474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Aims and methodTo examine the onset and course of clinically observable improvement in patients receiving electroconvulsive therapy (ECT). A prospective design was used In which 19 consecutive patients receiving ECT were followed up from commencement to termination of ECT. The Clinical Global Improvement Scale was administered at every ECT session to monitor their Improvement.ResultsEleven of the 19 subjects Improved minimally and another subject Improved substantially after the first two ECT treatments.Clinical implicationsECT produces clinically observable improvement in depression within a few days of starting treatment perhaps earlier than is generally acknowledged.
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Grubman J, Lea J. Specimen Fragmentation and Outcomes of Loop Electrosurgical Excision Procedures (LEEP) and Cold Knife Cone Biopsies (CKC) for Cervical Dysplasia. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.07.076] [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: 11/26/2022]
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8
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Moore K, Cadoo K, Chambers S, Ghamande S, Konecny G, Oza A, Chen LM, Konstantinopoulos P, Lea J, Spitz D, Uyar D, Mugundu G, Laing N, Strickland D, Jones S, Burris H, Spigel D, Hamilton E. A multicentre phase II study of AZD1775 plus chemotherapy in patients with platinum-resistant epithelial ovarian, fallopian tube, or primary peritoneal cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx372.061] [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: 11/13/2022] Open
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9
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Naranjo EN, Cleworth TW, Allum JHJ, Inglis JT, Lea J, Westerberg BD, Carpenter MG. Threat effects on human oculo-motor function. Neuroscience 2017; 359:289-298. [PMID: 28733210 DOI: 10.1016/j.neuroscience.2017.07.024] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 06/11/2017] [Accepted: 07/11/2017] [Indexed: 11/27/2022]
Abstract
Neuro-anatomical evidence supports the potential for threat-related factors, such as fear, anxiety and vigilance, to influence brainstem motor nuclei controlling eye movements, as well as the vestibular nuclei. However, little is known about how threat influences human ocular responses, such as eye saccades (ES), smooth pursuit eye tracking (SP), and optokinetic nystagmus (OKN), and whether these responses can be facilitated above normal baseline levels with a natural source of threat. This study was designed to examine the effects of height-induced postural threat on the gain of ES, SP and OKN responses in humans. Twenty participants stood at two different surface heights while performing ES (ranging from 8° to 45° from center), SP (15, 20, 30°/s) and OKN (15, 30, 60°/s) responses in the horizontal plane. Height did not significantly increase the slope of the relationship between ES peak velocity and initial amplitude, or the gain of ES amplitude. In contrast height significantly increased SP and OKN gain. Significant correlations were found between changes in physiological arousal and OKN gain. Observations of changes with height in OKN and SP support neuro-anatomical evidence of threat-related mechanisms influencing both oculo-motor nuclei and vestibular reflex pathways. Although further study is warranted, the findings suggest that potential influences of fear, anxiety and arousal/alertness should be accounted for, or controlled, during clinical vestibular and oculo-motor testing.
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Affiliation(s)
- E N Naranjo
- School of Kinesiology, University of British Columbia, Vancouver, BC, Canada
| | - T W Cleworth
- School of Kinesiology, University of British Columbia, Vancouver, BC, Canada
| | - J H J Allum
- School of Kinesiology, University of British Columbia, Vancouver, BC, Canada; Department of ORL, University of Basel Hospital, Basel, Switzerland
| | - J T Inglis
- School of Kinesiology, University of British Columbia, Vancouver, BC, Canada; International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, BC, Canada; Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada
| | - J Lea
- BC Rotary Hearing and Balance Centre at St. Paul's Hospital, Vancouver, British Columbia, Canada
| | - B D Westerberg
- BC Rotary Hearing and Balance Centre at St. Paul's Hospital, Vancouver, British Columbia, Canada
| | - M G Carpenter
- School of Kinesiology, University of British Columbia, Vancouver, BC, Canada; International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, BC, Canada; Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada.
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Bedell S, Manders D, Miller D, Lea J, Kehoe S, Richardson D, Carlson M. The Opinions and Practices of Providers Toward the Sexual Issues of Cervical Cancer Patients Undergoing Treatment. Gynecol Oncol 2016. [DOI: 10.1016/j.ygyno.2016.08.284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Mayadev J, Elshaikh M, Christie A, Nagel C, Khan N, Kennedy V, Lea J, Ghanem A, Miller D, Xie X, Folkert M, Albuquerque K. Prognostic Significance of Nodal Location in Stage IIIC Endometrial Carcinoma: Implications for Optimal Adjuvant Therapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1386] [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: 11/16/2022]
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Naranjo EN, Cleworth TW, Allum JHJ, Inglis JT, Lea J, Westerberg BD, Carpenter MG. Vestibulo-spinal and vestibulo-ocular reflexes are modulated when standing with increased postural threat. J Neurophysiol 2015; 115:833-42. [PMID: 26631147 DOI: 10.1152/jn.00626.2015] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [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: 06/24/2015] [Accepted: 11/27/2015] [Indexed: 01/30/2023] Open
Abstract
We investigated how vestibulo-spinal reflexes (VSRs) and vestibulo-ocular reflexes (VORs) measured through vestibular evoked myogenic potentials (VEMPs) and video head impulse test (vHIT) outcomes, respectively, are modulated during standing under conditions of increased postural threat. Twenty-five healthy young adults stood quietly at low (0.8 m from the ground) and high (3.2 m) surface height conditions in two experiments. For the first experiment (n = 25) VEMPs were recorded with surface EMG from inferior oblique (IO), sternocleidomastoid (SCM), trapezius (TRP), and soleus (SOL) muscles in response to 256 air-conducted short tone bursts (125 dB SPL, 500 Hz, 4 ms) delivered via headphones. A subset of subjects (n = 19) also received horizontal and vertical head thrusts (∼150°/s) at each height in a separate session, comparing eye and head velocities by using a vHIT system for calculating the functional VOR gains. VEMP amplitudes (IO, TRP, SOL) and horizontal and vertical vHIT gains all increased with high surface height conditions (P < 0.05). Changes in IO and SCM VEMP amplitudes as well as horizontal vHIT gains were correlated with changes in electrodermal activity (ρ = 0.44-0.59, P < 0.05). VEMP amplitude for the IO also positively correlated with fear (ρ = 0.43, P = 0.03). Threat-induced anxiety, fear, and arousal have significant effects on VSR and VOR gains that can be observed in both physiological and functional outcome measures. These findings provide support for a potential central modulation of the vestibular nucleus complex through excitatory inputs from neural centers involved in processing fear, anxiety, arousal, and vigilance.
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Affiliation(s)
- E N Naranjo
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - T W Cleworth
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - J H J Allum
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada; Department of Otolaryngology, University Hospital, Basel, Switzerland
| | - J T Inglis
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada; International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada; Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - J Lea
- BC Rotary Hearing and Balance Centre at St. Paul's Hospital, Vancouver, British Columbia, Canada
| | - B D Westerberg
- BC Rotary Hearing and Balance Centre at St. Paul's Hospital, Vancouver, British Columbia, Canada
| | - M G Carpenter
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada; International Collaboration on Repair Discoveries, University of British Columbia, Vancouver, British Columbia, Canada; Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada; and
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Rosene JM, Matthews TD, Mcbride KJ, Galla A, Haun M, Mcdonald K, Gagne N, Lea J, Kasen J, Farias C. The effects of creatine supplementation on thermoregulation and isokinetic muscular performance following acute (3-day) supplementation. J Sports Med Phys Fitness 2015; 55:1488-1496. [PMID: 25781214] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM The purpose of this investigation was to determine the effects of 3 d of creatine supplementation on thermoregulation and isokinetic muscular performance. METHODS Fourteen males performed two exercise bouts following 3 d of creatine supplementation and placebo. Subjects exercised for 60 min at 60-65% of VO2max in the heat followed by isokinetic muscular performance at 60, 180, and 300°·s(-1). Dependent variables for pre- and postexercise included nude body weight, urine specific gravity, and serum creatinine levels. Total body water, extracellular water and intracellular water were measured pre-exercise. Core temperature was assessed every 5 min during exercise. Peak torque and Fatigue Index were used to assess isokinetic muscular performance. RESULTS Core temperature increased during the run for both conditions. Total body water and extracellular water were significantly greater (P<0.05) following creatine supplementation. No significant difference (P>0.05) was found between conditions for intracellular water, nude body weight, urine specific gravity, and serum creatinine. Pre-exercise scores for urine specific gravity and serum creatinine were significantly less (P<0.05) versus post-exercise. No significant differences (P>0.05) were found in peak torque values or Fatigue Index between conditions for each velocity. A significant (P<0.05) overall velocity effect was found for both flexion and extension. As velocity increased, mean peak torque values decreased. CONCLUSION Three d of creatine supplementation does not affect thermoregulation during submaximal exercise in the heat and is not enough to elicit an ergogenic effect for isokinetic muscle performance following endurance activity.
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Affiliation(s)
- J M Rosene
- Health and Human Performance Department, Plymouth State University, Plymouth, NH, USA -
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Albuquerque K, Folkert M, Mayadev J, Liotta M, Nagel C, Sevak P, Harkenrider M, Lea J, Hanna R, Small W, Miller D, Potkul R, Elshaikh M. Adjuvant External Radiation is Essential in the Management of Pelvis-Limited Stage III Endometrial Carcinoma. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Manders D, Moron A, Miller D, Kehoe S, Richardson D, Lea J. Locally advanced cervical cancer: Effect of radiation dosage and treatment duration on outcomes. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Conrad L, Miller D, Kehoe S, Richardson D, Lea J. Defining optimal management of midline vulvar cancers. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.07.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Manders D, Kehoe S, Richardson D, Miller D, Lea J. Cervical cancer — Distant failure after treatment of para-aortic lymph node metastases. Gynecol Oncol 2014. [DOI: 10.1016/j.ygyno.2014.07.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Manders D, Word A, Lea J. Differential expression of fibulin proteins and matrix metalloproteinase 9 enzyme activity in benign and malignant ovarian tissue. Gynecol Oncol 2014. [DOI: 10.1016/j.ygyno.2014.07.017] [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: 11/15/2022]
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Lin K, Bryant S, Miller D, Richardson D, Kehoe S, Lea J. Outcomes of phenotypic females with dysgerminoma and 46, XY karyotype. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nagel C, Davidson B, Elwell K, Bevan C, Richardson D, Kehoe S, Lea J, Miller D. Can preoperative factors predict the need for postoperative radiation in patients with endometrioid adenocarcinoma of the uterus? Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.249] [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: 11/26/2022]
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Nagel C, Davidson B, Elwell K, Bevan C, Richardson D, Kehoe S, Lea J, Miller D. Assessment of the accuracy of preoperative and intraoperative endometrial pathology in uterine carcinoma. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Greig B, Stetler-Stevenson M, Lea J. Stabilization media increases recovery in paucicellular cerebrospinal fluid specimens submitted for flow cytometry testing. Cytometry B Clin Cytom 2013; 86:135-8. [PMID: 23674507 DOI: 10.1002/cyto.b.21096] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 03/26/2013] [Accepted: 03/29/2013] [Indexed: 01/18/2023]
Abstract
BACKGROUND Flow cytometric immunophenotpying (FCI) of cerebrospinal fluid (CSF) and other paucicellular fluids has been demonstrated to have increased sensitivity in detection of lymphoma and leukemia when compared to cytomorphology [(1) de Graaf et al., Cytometry Part B 2011, 80B:271-281; (2) Szamosi et al., CLSI Document H56-A-Body Fluid Analysis for Cellular Composition; Approved Guideline, Wayne, PA: Clinical and Laboratory Standards Institute, 2006; (3) Kraan et al., Flow Cytometric Immunophenotyping of Cerebrospinal Fluid. Current Protocols in Cytometry, Hoboken, NJ: Wiley, 2008]. However, low cellularity has been an historical problem with these samples. Several studies indicate that immediate addition of a stabilization media (e.g., RPMI with fetal calf serum (FCS)) to CSF improves the cell yield for FCI [(1) de Graaf et al.]. Such stabilization medias can, however, significantly increase cost. METHODS We compared FCI results in CSF stabilized with RPMI 1640 (without additional additives) to results obtained using non-stabilized CSF. Samples were processed according to published CLSI guidelines [(2) Szamosi et al.]. RESULTS About 98/105 (93%) CSF specimens stabilized with RPMI had adequate numbers of viable cells (>100) for performing FCI. About 65/217 (30%) CSF specimens without stabilization had adequate numbers of viable cells for analysis (70% either quantity not sufficient (QNS) or specimen viability below analytical limits). CONCLUSIONS Utilizing RMPI without FCS as a stabilization media results in increased cell yield and improved FCI results. We have found FCS is not required to achieve high quality results in FCI of paucicellular CSF specimens.
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Affiliation(s)
- B Greig
- Department of Pathology, Vanderbilt University Medical Center, Nashville, Tennessee
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Nagel C, Street J, Kehoe S, Richardson D, Miller D, Lea J. Clinical course of ovarian cancer after two salvage regimens. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2012.07.076] [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: 11/26/2022]
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Bevan C, Nagel C, Boren T, Miller D, Kehoe S, Richardson D, Albuquerque K, Lea J. Stage IIIC1 versus IIIC2 endometrial adenocarcinoma of the uterus: Analysis of recurrence and patterns of toxicity. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2012.07.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nagel C, Moron A, Elwell K, Kehoe S, Lea J, Miller D, Richardson D. Survival outcomes after recurrence in endometrioid compared to papillary serous/clear cell carcinoma of the uterus. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2012.07.077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Thomas S, Nagel C, Richardson D, Kehoe S, Miller D, Lea J. Incidence of adnexal metastasis requiring surgical intervention in women with advanced cervical cancer. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2012.07.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Elwell K, Nagel C, Lea J, Richardson D, Miller D, Kehoe S. Effect of BMI on progesterone therapy for endometrial cancer. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.402] [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: 11/26/2022]
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Nagel C, Denson W, Rogers P, Manders D, Richardson D, Kehoe S, Miller D, Lea J. Survival impact of clinical trials in patients with recurrent cervical cancer. Gynecol Oncol 2011. [DOI: 10.1016/j.ygyno.2011.07.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nagel C, Garcia-Soto A, Richardson D, Lea J, Miller D, Kehoe S. Does myometrial invasion confer a poorer prognosis in uterine adenosarcoma? Gynecol Oncol 2011. [DOI: 10.1016/j.ygyno.2011.07.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Davidson B, Nagel C, King M, Skorpinski T, Kehoe S, Richardson D, Miller D, Lea J. Challenging prognostic factors for chemotherapy resistance in high-risk gestational trophoblastic neoplasia. Gynecol Oncol 2011. [DOI: 10.1016/j.ygyno.2011.07.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Manders DB, Purinton SC, Lea J, Miller DS, Kehoe SM, Richardson DL. Third-line salvage chemotherapy for recurrent cervical cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15510] [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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Santin A, Varughese J, Lea J. In vitro chemosensitivity assay for patients with gynecologic sarcoma. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e20513] [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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Lea J, Hallac R, Ding Y, Yuan Q, McColl R, Sims D, Weatherall P, Mason R. Oxygenation in cervical cancer and normal uterine cervix assessed using BOLD MRI: Initial experiences. Gynecol Oncol 2011. [DOI: 10.1016/j.ygyno.2010.12.267] [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: 11/16/2022]
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Affiliation(s)
- E. T. Champagne
- USDA ARS Southern Regional Research Center, New Orleans, LA
- Corresponding author. Phone: 504-286-4448. Fax: 504-286-4430. E-mail address:
| | | | - J. L. Thomson
- USDA ARS Southern Regional Research Center, New Orleans, LA
| | - F. F. Shih
- USDA ARS Southern Regional Research Center, New Orleans, LA
| | - J. Lea
- USDA ARS Southern Regional Research Center, New Orleans, LA
| | - K. Daigle
- USDA ARS Southern Regional Research Center, New Orleans, LA
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Lea J, Cruickshank MT. The experience of new graduate nurses in rural practice in New South Wales. Rural Remote Health 2007; 7:814. [PMID: 17958475] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
INTRODUCTION The recruitment and retention of health professionals in rural areas is a long-standing concern in Australia. In the context of an ageing rural nursing workforce, recruitment and retention of new graduate nurses is an important issue. OBJECTIVE To explore the role transition for new graduate nurses in rural practice in New South Wales (NSW). METHODS This study utilised a qualitative hermeneutic-phenomenological framework. PARTICIPANTS & SETTING A purposive sample was drawn from eight rural health care facilities in NSW where participants were employed as new graduate nurses in the first year of a graduate nurse transition program. RESULTS The ward culture, workload and level of responsibility within rural healthcare facilities were of concern for new graduates and influenced their retention within the rural nursing workforce. MAIN OUTCOME There are specific aspects of the transition experience that are unique to graduate nurses in rural practice settings. CONCLUSION The findings have implications for undergraduate curricula in the preparation of graduates for the reality of the rural nursing workforce. Additionally, the expectations that staff have of new graduates as they enter the nursing workforce, and the workplace cultural issues recognised as having a significant impact on the retention of graduates must be addressed locally and at the area health service level if nurses are to be retained in this unique nursing specialty.
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Affiliation(s)
- J Lea
- University of New England, Armidale, NSW, Australia.
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Lock M, Chow E, Pond GR, Do V, Danjoux C, Dinniwell R, Lea J, Bezjak A. Prognostic factors in brain metastases: can we determine patients who do not benefit from whole-brain radiotherapy? Clin Oncol (R Coll Radiol) 2004; 16:332-8. [PMID: 15341436 DOI: 10.1016/j.clon.2004.03.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
AIMS Whole-brain radiotherapy (WBRT) is a standard treatment recommendation for patients with brain metastases. The goal of treatment is symptom control, which in the short run can be often achieved by steroids. Patients with a short life expectancy may not derive benefit from the addition of radiation. The ability to identify this group would aid the decision of whether to recommend WBRT. MATERIALS AND METHODS Data on all patients referred for WBRT to palliative radiotherapy teams at two comprehensive cancer centres were prospectively collected over a 2-year period. The most frequent radiation dose and fractionation was 2000 cGy in 5 fractions over 1 week. Multivariate logistic regression analysis using forward stepwise selection process was used to develop a prediction model for early death (before 8 weeks). The variables considered were sex, performance status, primary disease, weight loss, age, time from primary diagnosis to brain metastases diagnosis, number of metastatic sites and Radiation Therapy Oncology Group (RTOG) recursive partitioning analysis (RPA) status. RESULTS Two hundred and seventy-five patients with brain metastases were assessed. The median follow-up was 19 weeks, and estimated median overall survival was 5.3 months. Multivariate regression revealed Eastern Cooperative Oncology Group (ECOG) performance status and number of metastatic sites to be significant predictors of early death. The odds ratios were 2.38 (95% confidence interval [CI] 1.77-3.19) and 1.39 (95% CI 1.07-1.81), respectively. Sixty-eight per cent of patients could be correctly classified; however, 55% would have been incorrectly predicted to die early. CONCLUSIONS Poor performance status and number of metastatic sites are useful predictors of early death. A regression model was highly predictive overall, but this was primarily due to a high negative predictive value of 86%. The ability to predict patients who would die early (positive predictive value) was only 45%. Thus, despite the understanding that we are over-treating a subset of patients, further research is required to identify patients who do not require radiotherapy.
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Affiliation(s)
- M Lock
- Department of Radiation Oncology, London Regional Cancer Centre, University of Western Ontario, London, Ontario, Canada
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Kohn AB, Lea J, Roberts-Misterly JM, Anderson PA, Greenberg RM. Structure of three high voltage-activated calcium channel alpha1 subunits from Schistosoma mansoni. Parasitology 2001; 123:489-97. [PMID: 11719960 DOI: 10.1017/s0031182001008691] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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: 11/05/2022]
Abstract
Voltage-gated calcium (Ca2+) channels contribute to impulse propagation in excitable cells and also regulate intracellular levels of Ca2+. High voltage-activated (HVA) Ca2+ channels are heteromultimeric membrane proteins. The pore-forming, voltage-sensing subunit is the alpha1 subunit. We have cloned 3 HVA Ca2+ channel alpha1 subunit cDNAs from Schistosoma mansoni. One of these sequences most closely resembles the L-type class of HVA alpha1 subunits. The other two sequences are most closely related to non L-type alpha1 subunits. These schistosome alpha1 subunits have many of the features common to HVA Ca2+ channels, but also have distinct structural motifs. Analysis of the structural and functional properties of schistosome Ca2+ channel subunits may provide information about these critical components of excitable cells.
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Affiliation(s)
- A B Kohn
- Whitney Laboratory, University of Florida, St Augustine 32080, USA
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Lock M, Chow E, Do V, Panzarella T, Danjoux C, Lea J, Bezjak A. Prognostic factors in brain metastases: can we determine predictors of early death. Int J Radiat Oncol Biol Phys 2001. [DOI: 10.1016/s0360-3016(01)02291-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Agodoa LY, Appel L, Bakris GL, Beck G, Bourgoignie J, Briggs JP, Charleston J, Cheek D, Cleveland W, Douglas JG, Douglas M, Dowie D, Faulkner M, Gabriel A, Gassman J, Greene T, Hall Y, Hebert L, Hiremath L, Jamerson K, Johnson CJ, Kopple J, Kusek J, Lash J, Lea J, Lewis JB, Lipkowitz M, Massry S, Middleton J, Miller ER, Norris K, O'Connor D, Ojo A, Phillips RA, Pogue V, Rahman M, Randall OS, Rostand S, Schulman G, Smith W, Thornley-Brown D, Tisher CC, Toto RD, Wright JT, Xu S. Effect of ramipril vs amlodipine on renal outcomes in hypertensive nephrosclerosis: a randomized controlled trial. JAMA 2001; 285:2719-28. [PMID: 11386927 DOI: 10.1001/jama.285.21.2719] [Citation(s) in RCA: 718] [Impact Index Per Article: 31.2] [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] [Indexed: 12/22/2022]
Abstract
CONTEXT Incidence of end-stage renal disease due to hypertension has increased in recent decades, but the optimal strategy for treatment of hypertension to prevent renal failure is unknown, especially among African Americans. OBJECTIVE To compare the effects of an angiotensin-converting enzyme (ACE) inhibitor (ramipril), a dihydropyridine calcium channel blocker (amlodipine), and a beta-blocker (metoprolol) on hypertensive renal disease progression. DESIGN, SETTING, AND PARTICIPANTS Interim analysis of a randomized, double-blind, 3 x 2 factorial trial conducted in 1094 African Americans aged 18 to 70 years with hypertensive renal disease (glomerular filtration rate [GFR] of 20-65 mL/min per 1.73 m(2)) enrolled between February 1995 and September 1998. This report compares the ramipril and amlodipine groups following discontinuation of the amlodipine intervention in September 2000. INTERVENTIONS Participants were randomly assigned to receive amlodipine, 5 to 10 mg/d (n = 217), ramipril, 2.5 to 10 mg/d (n = 436), or metoprolol, 50 to 200 mg/d (n = 441), with other agents added to achieve 1 of 2 blood pressure goals. MAIN OUTCOME MEASURES The primary outcome measure was the rate of change in GFR; the main secondary outcome was a composite index of the clinical end points of reduction in GFR of more than 50% or 25 mL/min per 1.73 m(2), end-stage renal disease, or death. RESULTS Among participants with a urinary protein to creatinine ratio of >0.22 (corresponding approximately to proteinuria of more than 300 mg/d), the ramipril group had a 36% (2.02 [SE, 0.74] mL/min per 1.73 m(2)/y) slower mean decline in GFR over 3 years (P =.006) and a 48% reduced risk of the clinical end points vs the amlodipine group (95% confidence interval [CI], 20%-66%). In the entire cohort, there was no significant difference in mean GFR decline from baseline to 3 years between treatment groups (P =.38). However, compared with the amlodipine group, after adjustment for baseline covariates the ramipril group had a 38% reduced risk of clinical end points (95% CI, 13%-56%), a 36% slower mean decline in GFR after 3 months (P =.002), and less proteinuria (P<.001). CONCLUSION Ramipril, compared with amlodipine, retards renal disease progression in patients with hypertensive renal disease and proteinuria and may offer benefit to patients without proteinuria.
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Affiliation(s)
- L Y Agodoa
- Case Western Reserve University, Clinical Hypertension Program, University Hospitals of Cleveland and the Louis Stokes Cleveland Veterans Affairs Medical Center, 10900 Euclid Ave, Wood Bldg Room W-165, Cleveland, OH 44106-4982, USA.
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Lea J, Halliday T, Dyson M. Reproductive stage and history affect the phonotactic preferences of female midwife toads, Alytes muletensis. Anim Behav 2000; 60:423-427. [PMID: 11032644 DOI: 10.1006/anbe.2000.1482] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated whether the reproductive stage or reproductive history of females affects their preferences for male calls that differ in frequency. We repeatedly tested gravid female midwife toads prior to and immediately after mating, and during ovulation. When females were ovulating they were much more consistent in their choice of call than when they were gravid but not ovulating. When females had recently mated they still showed positive phonotaxis, but did not reliably discriminate between alternative calls. This study is the first to test gravid female anurans repeatedly at different stages in their reproductive cycle (ovulating or not; pre- and postmating). It highlights the need to treat with caution the results from population-based preference studies in which individuals are tested only once, and in which variation in reproductive state is not taken into account. Copyright 2000 The Association for the Study of Animal Behaviour.
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Affiliation(s)
- J Lea
- Department of Biological Sciences, The Open University
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Lea J. Complete groin node dissection with preservation of the fascia lata in the treatment of vulvar carcinoma. Obstet Gynecol 2000. [DOI: 10.1016/s0029-7844(00)00694-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kennedy SM, Chan-Yeung M, Marion S, Lea J, Teschke K. Maintenance of stellite and tungsten carbide saw tips: respiratory health and exposure-response evaluations. Occup Environ Med 1995; 52:185-91. [PMID: 7735392 PMCID: PMC1128185 DOI: 10.1136/oem.52.3.185] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To study exposure to cobalt and chromium in saw maintenance rooms and test respiratory health among saw filers at lumber mills. Hard-metal lung disease is associated with cobalt in the manufacture of tungsten carbide tools; recently it has also been reported among tool maintenance workers. Lumber mills often use saws tipped with tungsten carbide or with a newer alloy, stellite (containing more cobalt, as well as chromium). METHODS A cross sectional study of 118 saw filers at eight lumber mills was carried out that included a standardised questionnaire, spirometry, personal air sampling, and examination of tasks every 10 minutes (by observation). Comparison data were from a study of bus mechanics tested with similar methods. RESULTS AND CONCLUSION Cobalt exposure was associated with tungsten carbide grinding but not with stellite grinding. Chromium exposure was associated mainly with stellite welding. Saw filers had a twofold increase in phlegm and wheeze (P < 0.01) and a threefold increase in cough, phlegm, and wheeze related to work (P < 0.001), but no increase in breathlessness. Stellite welding was associated with a significant increase in nasal symptoms and cough related to work and a small decrease in airflow (forced expiratory volume in one second/forced vital capacity (FEV1/FVC%), P < 0.05). Saw filers wet grinding with tungsten carbide had significant reductions in forced expiratory lung volumes (FEV1 and FVC, P < 0.05) and were significantly more likely to have FEV1 and FVC values in the abnormal range. Cobalt exposure (in wet grinding) and duration of work that involved tungsten carbide grinding were both associated with significant reductions in FEV1 and FVC. Average cobalt exposures in this study were about 5 micrograms/m3, well below the currently accepted permissible concentration, which suggests that the current workplace limit for cobalt may be too high.
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Affiliation(s)
- S M Kennedy
- Department of Medicine, University of British Columbia, Vancouver, Canada
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Abstract
A group of patients with chronic lymphocytic leukaemia (CLL) were studied to determine whether particular clinical and laboratory parameters might help to identify those patients at risk of recurrent infection who would benefit from immunoglobulin replacement therapy. The case notes of 59 patients were reviewed with regard to stage and duration of disease, chemotherapy and frequency of infection over the preceding 2 years. Serum IgG levels and specific antibodies to tetanus, diphtheria and pneumococcal capsular polysaccharide were measured at the end of the 2-year period. A group of 56 healthy age-matched volunteers were used as controls. Eighteen patients had severe or multiple infections during the study period, 11 patients had recurrent infections and the remaining 30 patients had only minimal infections. Overall, serum IgG levels were low in 32 patients but in none of the control group (P = 8.8 x 10(-11). However, less than half of those patients with hypogammaglobulinaemia suffered from severe or multiple infections. Specific antibodies to pneumococcal capsular polysaccharide were low in 23 patients compared with six of the control group (P = 4.9 x 10(-4)). The majority of patients with severe or multiple infections (13/18) had low levels of both total IgG and specific antibodies to pneumococcal capsular polysaccharide. However, in the groups of patients with less frequent infections, a higher proportion had low serum IgG than low pneumococcal antibody levels. Low levels of pneumococcal antibodies were particularly associated with severe or multiple infections (P = less than 0.00001).
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Affiliation(s)
- H Griffiths
- Department of Immunology, John Radcliffe Hospital, Oxford, UK
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Affiliation(s)
- D L Watson
- CSIRO, Division of Animal Health, Armidale, New South Wales
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Abstract
Bacterial infection is an important cause of morbidity and mortality in patients with B-cell tumors; this is related to their secondary hypogammaglobulinaemia. Two studies of intravenous replacement therapy [IVIg] have been performed in such patients: a crossover study over two years and a randomised, multicentre study over one year. Both involved infusions of IVIg [400 mg/Kg] or an equivalent volume of saline every three weeks for one year. In both studies, serious bacterial infections were considerably reduced by IVIg. Viral and fungal infections were uncommon. In the crossover study bacterial infections were more frequent in periods in which patients serum IgG levels were below the normal range [less than 6.4 g/l]. The sites of bacterial infection were similar in these studies to those in previously published reports, namely respiratory tract, skin, urinary tract and blood. There were a few mild adverse reactions which were related to the rate of infusion, but no serious toxic effects. Haematological parameters were not significantly changed by IVIg at this dose and disease progression did not appear to be changed.
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Affiliation(s)
- H Chapel
- Department of Immunology, John Radcliffe Hospital, Oxford, UK
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Mtawali G, Muhuhu P, Angle M, Lea J. Pregnancy diagnosis and contraception. Afr Health 1990; 13:36-7. [PMID: 12316583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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Griffiths H, Brennan V, Lea J, Bunch C, Lee M, Chapel H. Crossover study of immunoglobulin replacement therapy in patients with low-grade B-cell tumors. Blood 1989; 73:366-8. [PMID: 2492832] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
A randomized crossover study of prophylactic immunoglobulin (IgG) therapy was performed in patients with chronic lymphocytic leukaemia (CLL) or non-Hodgkin's lymphoma (NHL). Twelve patients with hypogammaglobulinemia or a history of recurrent infections received infusions of IgG or placebo intravenously (IV) every 3 weeks for 1 year. They were then switched to the alternative preparation for another year. The number of serious bacterial infections was significantly less (P = .001; Mainland's cross-over method) in the months in which patients received IgG. Serious bacterial infections showed a trend to be associated with an IgG level less than 6.4 g/L (P = .046; Fisher's exact test).
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MESH Headings
- Aged
- B-Lymphocytes
- Double-Blind Method
- Humans
- Immunization, Passive/adverse effects
- Immunoglobulin G/administration & dosage
- Immunoglobulin G/analysis
- Immunoglobulins, Intravenous
- Infections/etiology
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/complications
- Leukemia, Lymphocytic, Chronic, B-Cell/therapy
- Lymphoma, Non-Hodgkin/blood
- Lymphoma, Non-Hodgkin/complications
- Lymphoma, Non-Hodgkin/therapy
- Middle Aged
- Prognosis
- Random Allocation
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Affiliation(s)
- H Griffiths
- Department of Immunology, John Radcliffe Hospital, Oxford, England
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Reid A, Lea J, Wallace D. Rehabilitation in Elton Ward, an interim regional secure unit. Nurs Times 1982; 78:supply 8:29-30. [PMID: 6918935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Brasier C, Lea J, Rawlings M. The aggressive and non-aggressive strains of Ceratocystis ulmi have different temperature optima for growth. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/s0007-1536(81)80141-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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