626
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Manuel I, Thomas C, Colas H, Matthess N, Djéga-Mariadassou G. A New Approach in the Kinetic Modelling of Three-Way Catalytic Reactions. Top Catal 2004. [DOI: 10.1023/b:toca.0000029768.22036.88] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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627
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Idbaih A, Donadieu J, Barthez MA, Geissmann F, Bertrand Y, Hermine O, Brugières L, Genereau T, Thomas C, Hoang-Xuan K. Retinoic acid therapy in "degenerative-like" neuro-langerhans cell histiocytosis: a prospective pilot study. Pediatr Blood Cancer 2004; 43:55-8. [PMID: 15170890 DOI: 10.1002/pbc.20040] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Degenerative-like neuro-Langerhans cell histiocytosis (DN-LCH) is a rare complication of LCH marked by progressive cerebellar ataxia. No treatment has so far been shown to slow this progression. PROCEDURE All-trans retinoic acid (ATRA) was administered orally at a dose of 45 mg/m(2) daily for 6 weeks and then 2 weeks every month for 1 year. The endpoints were clinical status at 1 year (assessed with rating scales for ataxia and disability), adverse effects, and changes in neurological abnormalities on MRI. RESULTS Ten patients were studied. The treatment was well tolerated. All the patients were clinically stable at the end of the study. No MRI changes were noted. CONCLUSIONS DN-LCH appeared to be stable during ATRA therapy, but further studies are required to appreciate the possible long-term benefits of ATRA.
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628
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Abstract
The place of death of cancer patients has become an important theme in UK cancer and palliative care policy. This paper examines the place of death preferences of 41 terminally ill cancer patients and 18 of their informal carers, living in the Morecambe Bay area of north-west England. We interviewed cancer patients referred to the research team by 13 specialist palliative care professionals; patients had an estimated 3 months of life remaining. The study design involved an in-depth qualitative interview with each patient soon after referral to the study, followed by an interview some 4 weeks later and subsequent tracking interviews by telephone at 2-4 week intervals until death occurred. Interviews were also conducted with main coresident carers soon after patient referral to the study and again in the post-bereavement period. Thirteen factors were identified as shaping the place of death preference of patients and carers. These are organised into four thematic domains: the informal care resource, management of the body, experience of services, and existential perspectives. In documenting these factors, this paper adds significantly to current knowledge on the factors that shape place of death preference, a field of enquiry acknowledged to be underdeveloped (J. Palliative Med. 3 (2000) 287). More importantly, it uncovers some of the reasons that underpin these preferences. Our research revealed a much stronger preference for deaths in a hospice than had been anticipated, leading us to take a qualified stance on the current policy drive in favour of home deaths by those charged with delivering UK cancer and palliative care services.
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629
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Meyer WJ, Blakeney P, Russell W, Thomas C, Robert R, Berniger F, Holzer C. Psychological problems reported by young adults who were burned as children. ACTA ACUST UNITED AC 2004; 25:98-106. [PMID: 14726746 DOI: 10.1097/01.bcr.0000107203.48726.67] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
This study assessed long-term psychosocial sequelae of young adult pediatric burn survivors. Subjects were 101 young adults (43 females and 58 males) between the ages of 18 and 28 years who were at least 2 years (average, 14 years) postburn at least 30% TBSA (mean = 54 +/- 20%). Educational status was 25% high school dropouts, 28% high school graduation only, 32% some college, and 5% completed college. Seventy-seven percent either worked or attended school; 28% had had a long-term partner. When assessed by Achenbach's Young Adult Self-Report (YASR) scale and compared with its published reference group, the males reported differences only in the somatic complaints, but the females endorsed significantly more externalizing and total problems, specifically withdrawn behaviors, somatic complaints, thought problems, aggressive behavior, and delinquent behavior. Despite these problems suffered by some female pediatric burn survivors, the overall outcome revealed that most pediatric burn survivors are making the transition into adulthood with minimal unexpected difficulty.
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630
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Rouby E, Thomas C. La codification des compétences organisationnelles. L'épreuve des faits. ACTA ACUST UNITED AC 2004. [DOI: 10.3166/rfg.149.51-68] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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631
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Fairley CK, Levy R, Rayner CR, Allardice K, Costello K, Thomas C, McArthur C, Kong D, Mijch A. Randomized trial of an adherence programme for clients with HIV. Int J STD AIDS 2004; 14:805-9. [PMID: 14678587 DOI: 10.1258/095646203322556129] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Our aim was to determine if a comprehensive adherence package improved self reported adherence to antiretroviral therapy. The adherence package included an education programme, individualized planning of regimens, and the opportunity for a patient to choose from a number of adherence aids and reminder devices. A randomized step wedge design was used. Forty-three individuals were randomized to begin the intervention over a five-month period. There was a substantial fall in the number of missed doses reported for the last four days (0.76 to 0.38, P =0.03) and last seven days (1.5 to 0.74, P =0.005) but not for the last 28 days (2.5 to 2.5, P =0.63). There was no statistical difference in the viral load or CD4 lymphocyte count in the period before or after the intervention. The Morisky score during the pre and post intervention periods was significantly different (P =0.006), 2.9 (SD 0.9) and 3.3 (SD 0.8) respectively. This adherence package improved self reported adherence during the last four and seven days.
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632
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Abstract
'Early closure' of burn wounds by excising the burned tissues and promptly covering it with skin-grafts or its substitutes within first 'five' post-burns day is a standard technique of burn-wound-management in the burn-units of the "developed" world. But lack of education in general, and health-education in particular amongst the common people in the "developing" countries could hinder acceptance of this procedure. Lack of well-trained and motivated burns-surgeons could worsen the situation. The Sultanate of Oman is one of the developing gulf-countries in the middle-east, where at Khoula hospital, the National Burns-Center in the capital city of Muscat, 'early' surgery was introduced in November 1997 to soon become a routine protocol for burn-wound-management. But delay in getting consent for surgery from unwilling patients or in transferring them from the peripheral hospitals were often the reasons for delaying the burn-wound excision and closure 'beyond 6 days to 11th or 12th' day post-burn. Hence, instead of the term "early", the authors prefer to call it "delayed primary" burn-wound closure because, it still offers "primary intention healing" of the burn-wounds. The aim of this article is to analyze retrospectively the results of the "delayed primary" closure of the burn-wounds done in the Khoula Hospital Burns-Unit of the Sultanate of Oman. During a period of 50 months from November 1997 to December 2001, carefully selected 143 patients out of a total of 592 admissions in burns-unit were subjected to burn-wound excision and auto-skin-grafting (STSG), of whom about 87% patients had "delayed primary" and 13% had "early" surgery. There was no mortality or post-operative morbidity in these operated patients. However, due to the non-availability of skin substitutes the excision and auto-grafting could not be done in extensive burns with inadequate skin-donor-area. The maximum percentage of burns treated by delayed primary surgery (DPS) was 50% in children and 55% in adults. Follow-up results were good functionally as well as cosmetically. The authors conclude that "delayed primary" is the second best alternative to the "early" burn-wound excision and closure with similar advantages of reducing risk of septicemia, mortality, and morbidity, hospital stay and cost of treatment. It should be preferred over "secondary" skin-grafting of granulating wounds. Thus, in the developing countries, the indications of delayed primary burn surgery could be (1) patients unstable or unfit for surgery during the first post-burn week; (2) delay in transferring in the patients; (3) delay in getting patient's consent for surgery; (4) very major burns without availability of skin substitutes; and (5) lack of operating time in a busy burns-unit. The contraindications for delayed primary surgery are any sign of invasive sepsis or organ failure.
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633
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Dunoyer P, Thomas C, Harrison S, Revers F, Maule A. A cysteine-rich plant protein potentiates Potyvirus movement through an interaction with the virus genome-linked protein VPg. J Virol 2004; 78:2301-9. [PMID: 14963126 PMCID: PMC369224 DOI: 10.1128/jvi.78.5.2301-2309.2004] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2003] [Accepted: 11/17/2003] [Indexed: 11/20/2022] Open
Abstract
We have identified a cellular factor that interacts with the virus genome-linked proteins (VPgs) of a diverse range of potyviruses. The factor, called Potyvirus VPg-interacting protein (PVIP), is a plant-specific protein with homologues in all the species examined, i.e., pea, Arabidopsis thaliana, and Nicotiana benthamiana. The sequence of PVIP does not identify a specific function, although the existence of a "PHD finger" domain may implicate the protein in transcriptional control through chromatin remodeling. Deletion analysis using the yeast two-hybrid system showed that the determinants of the interaction lay close to the N terminus of VPg; indeed, the N-terminal 16 amino acids were shown to be both necessary and sufficient for the interaction with at least one PVIP protein. From a sequence comparison of different potyvirus VPg proteins, a specific amino acid at position 12 was directly implicated in the interaction. This part of VPg is distinct from regions associated with other functional roles of VPg. Through mutation of Turnip mosaic virus (TuMV) at VPg position 12, we showed that the interaction with PVIP affected systemic symptoms in infected plants. This resulted from reduced cell-to-cell and systemic movement more than reduced virus replication, as visualized by comparing green fluorescent protein-tagged wild-type and mutant viruses. Furthermore, by using RNA interference of PVIP in Arabidopsis, we showed that reduced expression of PVIP genes reduced susceptibility to TuMV infection. We conclude that PVIP functions as an ancillary factor to support potyvirus movement in plants.
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634
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Stefanidis D, Miranda J, Wong A, Pollock B, Thomas C, Kahlenberg M. Colorectal cancer in hispanics: A population at risk for earlier onset, advanced disease and decreased survival. Ann Surg Oncol 2004. [DOI: 10.1007/bf02524152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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635
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Abstract
BACKGROUND Absorption of non-haeme iron occurs mainly in the duodenum. It involves the divalent metal transporter 1 (DMT1) in the uptake of ferrous Fe(II) iron and the basolateral transporter ferroportin/IREG-1/MTP-1/SLC40A1 in its release. Whether ferroportin functions in this process at other sites in the enterocyte is unknown. In this study the effect of a blocking antibody to ferroportin on the uptake and release of iron was evaluated in enterocyte-like cells (IEC-6 and Caco-2) and in freshly isolated duodenal enterocytes from rats. METHODS Uptake of 1 microM Fe(II) and its release by cells was studied in the presence of the antibody. Ferroportin expression was determined by western blot analysis of duodenal mucosa enriched microvillus membranes, Caco-2 cells, IEC-6 cells, and freshly isolated enterocytes. Immunofluorescent detection of ferroporitn was performed on frozen sections of duodenum from rats with variations in body iron stores. RESULTS Ferroportin was expressed in all cell types. In these cells, the antibody significantly reduced (p<0.05) uptake of Fe(II) by 40-50% but had no effect on the release of iron. In Caco-2 cells, Fe(II) uptake was reduced only when the antibody was in contact with the apical membrane. Ferroportin protein was enriched in microvillus membrane preparations. In enterocytes from iron deficient rats, ferroportin was expressed along the brush border where it colocalised with lactase. Ferroportin was seen in the basal cytoplasm and along the basolateral membranes. Iron loading markedly reduced intracellular expression of ferroportin. In Caco-2 cells, ferroportin also localised to the microvillus and lateral and basal membranes. CONCLUSIONS In addition to release, ferroportin functions in the uptake of iron at the apical membrane, possibly by modulating the activity of DMT1.
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636
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Thomas C, Foulet-Rogé A, Plat M, Kaswin R, Lepic P, Solal-Céligny P, Lebas F. 198 Granulomatose lymphomatoïde : à propos d’un cas d’évolution favorable sous anticorps monoclonaux anti-CD 20. Rev Mal Respir 2004. [DOI: 10.1016/s0761-8425(04)71824-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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637
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Rubie H, Coze C, Plantaz D, Munzer C, Defachelles AS, Bergeron C, Thomas C, Chastagner P, Valteau-Couanet D, Michon J, Mosseri V, Hartmann O. Localised and unresectable neuroblastoma in infants: excellent outcome with low-dose primary chemotherapy. Br J Cancer 2003; 89:1605-9. [PMID: 14583756 PMCID: PMC2394428 DOI: 10.1038/sj.bjc.6601259] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The purpose of this study was to evaluate the efficacy of low-dose chemotherapy in infants with localised and unresectable neuroblastoma (NB). All consecutive infants with localised NB and no N-myc amplification were eligible in the SFOP-NBL 94 study. Primary tumour was deemed as unresectable according to imaging data showing any risk of immediate resection. Diagnostic procedures and staging were conducted according to INSS recommendations. For children, provided that they had no threatening symptom (i.e. vital risk or dumb-bell NB with neurologic deficit), chemotherapy consisted in low-dose cyclophosphamide (5 mg−1kg day−1 × 5 days) and vincristine (0.05 mg kg−1 at day 1)–CV and repeated one to three times every 2 weeks until surgical excision can be safely performed. No postoperative treatment was given. Between January 1995 and December 1999, 134 consecutive infants with localised NB were registered in the study, of whom 39 had an unresectable NB without N-myc amplification. Among them 28 had no threatening symptom and received CV according to the protocol. Objective response was observed in 14 (50%) and the other 14 were given second-line chemotherapy because of no response. Surgery was attempted in 38 patients including 14 after CV alone, leading to complete resection in 23. Relapses occurred in four patients all local. Survival and event-free survival were 100 and 90±5% with a median follow-up of 55 months (range 33–93). In conclusion primary low-dose chemotherapy without anthracyclines is efficient in about half of the infants presenting with an unresectable NB and no N-myc amplification, allowing excellent survival rates without jeopardising their long-term outcome even for nonresponding patients who received standard regimen.
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638
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Thomas C, Ogboli MI, Carr RA, Charles-Holmes R. Hypertrophic perianal porokeratosis in association with superficial actinic porokeratosis of the leg. Clin Exp Dermatol 2003; 28:676-7. [PMID: 14616847 DOI: 10.1046/j.1365-2230.2003.01410.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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639
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Kachnic L, Moughan J, Thomas C, Minsky B, Owen J, Coia L. National practice for patients receiving radiation therapy for carcinoma of the rectum: comparative analysis of the 1992–1994 patterns of care study. Int J Radiat Oncol Biol Phys 2003. [DOI: 10.1016/s0360-3016(03)00975-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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640
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Thomas C. Erratum. Mol Imaging Biol 2003. [DOI: 10.1016/s1536-1632(03)00109-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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641
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642
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Harman AM, Rodger J, Ahmat A, Thomas C, Bartlett C, Chen P, Dunlop SA, Beazley LD. PSA-NCAM is up-regulated during optic nerve regeneration in lizard but not in goldfish. Exp Neurol 2003; 182:180-5. [PMID: 12821388 DOI: 10.1016/s0014-4886(03)00081-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The addition of polysialic acid (PSA) to neural cell adhesion molecule (NCAM) facilitates axon growth. Here we use Western blots and immunohistochemistry to examine expression of PSA-NCAM during optic nerve regeneration. In lizard, retinal ganglion cell axons become transiently PSA-NCAM positive. By contrast, goldfish RGC axons are PSA-NCAM negative both in normal animals and throughout regeneration with the exception of a PSA-NCAM-positive fascicle arising from newly generated RGCs. Transient sialylation of NCAM in lizard may assist regeneration in the nonpermissive reptilian visual pathway and facilitate the reestablishment of a crude topographic map; down-regulation in the long term may contribute to the breakdown in topography. The lack of sialylation in goldfish presumably reflects the permissive nature of the substrate allowing axon regeneration and the successful reestablishment of a topographic map.
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643
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Thomas C, Not Available NA, Mathew KE. Tuberculous tenosynovitis of the hand. EUROPEAN JOURNAL OF PLASTIC SURGERY 2003. [DOI: 10.1007/s00238-003-0482-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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644
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Akkari V, Donadieu J, Piguet C, Bordigoni P, Michel G, Blanche S, Casanova JL, Thomas C, Vilmer E, Fischer A, Bertrand Y. Hematopoietic stem cell transplantation in patients with severe Langerhans cell histiocytosis and hematological dysfunction: experience of the French Langerhans Cell Study Group. Bone Marrow Transplant 2003; 31:1097-103. [PMID: 12796789 DOI: 10.1038/sj.bmt.1704065] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The aim of this study was to assess the results of hematopoietic stem cell transplantation (HSCT) in refractory Langerhans cell histiocytosis (LCH). Among 85 patients with LCH and hematological dysfunction diagnosed in France between 1987 and 2000, eight received HSCT in six institutions. Median age at diagnosis was 0.54 years. The median LCH activity score at diagnosis was 10 (range 3-20). All patients responded poorly to initial chemotherapy. At the time of HSCT, the median activity score was 16.5 (range 7-18). HSCT was autologous in three cases and allogeneic in five cases. The conditioning regimen consisted of TBI in two cases and chemotherapy alone in six cases. Conditioning had to be attenuated in two patients. All patients had persistent active disease after autologous HSCT, which was fatal in two cases and controlled by chemotherapy in one case. After allogeneic HSCT, two patients died from toxicity and three had complete responses; two patients had had no recurrences after 21 months and 7 years of follow-up, while the other patient relapsed and died from sepsis related to splenectomy. HSCT for refractory LCH can thus be highly toxic but can also achieve sustained disease control.
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645
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Marec-Berard P, Babin A, Thomas C, Dalle JH, Borderon JC, Millot F. Quand vacciner ou revacciner un enfant traité pour une affection maligne par chimiothérapie. Arch Pediatr 2003; 10 Suppl 1:105s-108s. [PMID: 14509761 DOI: 10.1016/s0929-693x(03)90401-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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646
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Thomas C. [Letter to the editor by X. Roblin et al., Influence of hypolipemic treatment on homocysteinemia]. Rev Med Interne 2003; 24:335-6; author reply 336. [PMID: 12763184 DOI: 10.1016/s0248-8663(03)00107-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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647
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Thomas C. A patient who changed my practice: I should have known better. West J Med 2003. [DOI: 10.1136/bmj.326.7395.920/a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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648
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Thomas C. Marjorie Paula Thomas. West J Med 2003. [DOI: 10.1136/bmj.326.7390.662/h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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649
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Soothill K, Morris SM, Thomas C, Harman JC, Francis B, McIllmurray MB. The universal, situational, and personal needs of cancer patients and their main carers. Eur J Oncol Nurs 2003; 7:5-13; discussion 14-6. [PMID: 12849570 DOI: 10.1054/ejon.2002.0226] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The importance of psychosocial factors in the cancer journey for both patients and their carers has been recognised in UK health policy. The aim of this paper is to consider--(1) which needs are regarded as important by patients and their carers; (2) which are the unmet needs of patients and their carers. The study focuses on the responses of 233 paired cancer patients and their carers derived from a cross-sectional questionnaire survey in three health authorities in North West England. The majority of patient-carer pairs expressed the importance of having good relationships with health-care professionals and receiving good-quality information. These can be identified as "universal" needs. A minority of patient-carer pairs expressed the importance of other kinds of needs. These items were mainly to do with managing daily life, emotions, and social identity and can be identified as "situational" or "personal" needs. Where there were discrepancies between patients and carers, patients were likely to identify more needs as important. In contrast, carers have more unmet needs, reflecting their comparative neglect. Broadly, "universal" needs are being met, but "situational" and "personal" needs, particularly among carers, are relatively unmet and require greater attention on the part of nurses and primary care professionals.
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650
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Frankenberg-Schwager M, Turcu G, Thomas C, Wollenhaupt H, Bucker H. Membrane damage in dehydrated bacteria and its repair. LIFE SCIENCES AND SPACE RESEARCH 2003; 13:83-8. [PMID: 12180476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
The dehydration of bacteria by vacuum exposure results in damage to the cell membrane. This membrane damage does not necessarily lead to cell death. A part of the dehydrated bacteria is capable of eliminating the membrane damage by repair processes. Repair can proceed rapidly under conditions that permit synthesizing activities. The kinetics of this repair process were studied by means of the membrane-mediated biosynthesis of the cell wall as well as by the recovery of resistance to small concentrations of lysozyme. Repair is a precondition for cell proliferation. At low temperature cells can conserve their membrane damage and the repair process can be initiated when conditions become favourable.
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