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Canning EU, Curry A, Cheney SA, Lafranchi-Tristem NJ, Kawakami Y, Hatakeyama Y, Iwano H, Ishihara R. Nosema tyriae n.sp. and Nosema sp., microsporidian parasites of Cinnabar moth Tyria jacobaeae. J Invertebr Pathol 1999; 74:29-38. [PMID: 10388544 DOI: 10.1006/jipa.1999.4861] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nosema tyriae n.sp. was found in 63% of a population of Cinnabar moth larvae (Tyria jacobaeae). The infection was found in the gut wall, silk glands, and fat body and was probably generalized but appeared to be of low pathogenicity. Merogony and sporogony were by binary fission of diplokaryotic stages. Fresh spores were elongate, slightly pointed at the anterior end, and measured 4.7 x 2.0 microm. Ultrastructural features of special interest were 20-nm tubules connecting the surface of sporonts with host cell cytoplasm and, in the spores, a deeply domed polar sac, polaroplast consisting of closely packed longitudinally arranged membranes and loosely packed horizontally arranged membranes, and 10.5-14 coils of the polar tube in a single rank. The 16S rRNA genes of N. tyriae and Nosema bombycis from silkworms, Bombyx mori, differed by only six nucleotides and N. tyriae spores gave a moderately positive reaction with a monoclonal antibody raised to N. bombycis. N. tyriae was infective to B. mori but was less virulent than N. bombycis. However, no amplification product was obtained by PCR using N. tyriae DNA and primers considered to be specific for N. bombycis. Also, the spores of the two species are of entirely different shapes. A second diplokaryotic microsporidium, Nosema sp., found as a light infection in only one of the larvae had much smaller developmental stages and spores measuring 3.8 x 2.0 microm (fixed). Ultrastructurally it was distinguished by an abundance of dense membranes in cytoplasmic vesicles in both meronts and sporonts. Spores with up to 15 coils of the polar tube in irregular clusters or with about 12 coils in a single rank were observed in the tissues fixed from the one larva infected with this parasite. As this larva had been kept with N. tyriae-infected larvae for a few days before examination, it is possible that the two types of spores resulted from a double infection.
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Curry A, Bryden A, Morgan-Capner P, Fox A, Guiver M, Martin L, Mutton K, Wright P, Mannion P, Westwell A, Cheesbrough J, Ashton I, Blackley A. A rationalised virological electron microscope specimen testing policy. PHLS North West Viral Gastroenteritis and Electron Microscopy Subcommittee. J Clin Pathol 1999; 52:471-4. [PMID: 10562819 PMCID: PMC501438 DOI: 10.1136/jcp.52.6.471] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The aim of this project was to produce guidance for a rationalised virological electron microscopy specimen testing policy for PHLS North West, to facilitate centralisation of a groupwide diagnostic electron microscopy service on a single site. Careful specimen selection to limit numbers and the groupwide use of commercially available enzyme immunoassays has allowed PHLS North West to reduce the number of specimens prepared for electron microscopy. The rationalised virological electron microscopy specimen testing policy has enabled a diagnostic electron microscopy service to be provided from a single site with a manageable workload. Implementation of this specimen testing policy by PHLS North West has been successful and may be applicable to other laboratories (or groups of laboratories) to maximise the use of expensive electron microscopy facilities.
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Lin RY, Pesola GR, Bakalchuk L, Heyl GT, Dow AM, Tenenbaum C, Curry A, Westfal RE. Rapid improvement of peak flow in asthmatic patients treated with parenteral methylprednisolone in the emergency department: A randomized controlled study. Ann Emerg Med 1999; 33:487-94. [PMID: 10216323 DOI: 10.1016/s0196-0644(99)70334-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
STUDY OBJECTIVE Corticosteroids are thought to exert their physiologic effects in asthma over the course of several hours. In this study we tested the hypothesis that intravenous methylprednisolone improves airflow in a shorter time frame (2 hours) in adults with acute asthma. METHODS In a randomized, double-blind, placebo-controlled trial, 56 adult asthmatic patients with peak expiratory flow rates (PEFRs) less than 50% predicted after an initial albuterol aerosol treatment were studied. These patients were randomly assigned to treatment with either 125 mg of intravenous methylprednisolone or an equivalent volume of normal saline solution (placebo). Patients were also treated with identical schedules of nebulized ipratropium and albuterol. Patients were recruited from an emergency department at an urban academic medical center. The primary endpoints were changes in PEFR and in percent predicted PEFR over time. PEFRs were assessed at baseline and at 1 and 2 hours. Heart rate changes over time and the proportion of admissions in the 2 groups were also compared. RESULTS The increases in PEFR and percent predicted PEFR over time were both significantly greater in the methylprednisolone treatment group (P =. 002 and P =.005, respectively). The increases in geometric mean peak flow at 60 and 120 minutes were 79 and 96 L/min for the methylprednisolone group and 54 and 68 L/min for the placebo group. There was also a significantly different change in heart rates with time between the methylprednisolone and placebo groups (P =.029), with the placebo group showing a moderate increase in heart rate over time. Although the proportion of patients admitted for status asthmaticus was less in the methylprednisolone treatment group (8/30) compared with the placebo group (10/26), this difference in proportions (-.118, 95% confidence interval -.363 to.127) was not significant. CONCLUSION These data suggest that use of corticosteroids should be considered relatively early in the treatment of patients with acute asthma in whom initial bronchodilator therapy fails to produce an adequate response.
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Gao L, Parsons NJ, Curry A, Cole JA, Smith H. Lactate causes changes in gonococci including increased lipopolysaccharide synthesis during short-term incubation in media containing glucose. FEMS Microbiol Lett 1998; 169:309-16. [PMID: 9868775 DOI: 10.1111/j.1574-6968.1998.tb13334.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Gonococci (strain BS4(agar)), emerging from lag-phase during 1-1.5 h incubation in a medium containing glucose (28 mM) and either 5 microM or 50 microM sodium lactate, show enhanced capacity for their lipopolysaccharide (LPS) to be sialylated by cytidine 5'-monophospho-N-acetyl neuraminic acid. The sialyltransferase content of the lactate-treated gonococci was not greater than that of control organisms and showed no differences in LPS components. However, the total LPS content of the lactate-treated gonococci was 10-20% higher than that of control organisms, so lactate enhancement may be due to more sialyl receptors becoming available due to an overall stimulation of LPS synthesis. The protein and pentose contents of the lactate-treated gonococci were also higher than those of controls, indicating stimulation of protein synthesis and ribosome production. Electron microscopy showed hair-like external appendages on control but not on lactate-treated gonococci. The above growth conditions are unnatural. However, when concentrations of glucose and lactate were adjusted to values akin to those occurring in vivo (glucose 5 mM alone and with either 1 mM or 10 mM lactate), and gonococcal multiplication occurred during the short incubation period (1-1.5 h), lactate again induced greater contents of LPS, protein and pentose. A high content of LPS, which will contribute to pathogenicity, should be a constant feature of gonococci growing in human urogenital tissues, where lactate is ever present with glucose.
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Curry A, Jeziorska M, Woolley DE. Evidence for in vivo mitosis by granule-containing mast cells from canine mastocytomas. Virchows Arch 1998; 433:465-70. [PMID: 9849862 DOI: 10.1007/s004280050275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Mast cell accumulations are generally considered to arise almost exclusively from the recruitment of non-granulated, bone-marrow-derived, precursor cells, with the stem cell factor (SCF) reported to play a crucial role in the growth, development and maturation of granulated mast cells within specific tissue sites. In this study dog mastocytoma specimens have been examined by both immunohistochemical and ultrastructural techniques, to demonstrate that fully granulated mast cells are capable of mitotic activity. Observations showing the formation of mitotic spindles, chromosome separation and cytokinesis all support the concept that granulated mast cells are capable of proliferative activity. The ability of mature granulated mast cells to replicate provides an alternative process for local increases in mast cell numbers, at least in canine mast cell tumours. Such observations suggest the possibility that normal or neoplastic human mast cells, fully granulated, have the potential to proliferate in specific tissue sites.
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Canning EU, Curry A, Vávra J, Bonshek RE. Some ultrastructural data on Microsporidium ceylonensis, a cause of corneal microsporidiosis. Parasite 1998; 5:247-54. [PMID: 9772724 DOI: 10.1051/parasite/1998053247] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Sections of corneal tissue infected with Microsporidium ceylonensis were restained or processed for electron microscopy. Confirmation was obtained that the parasite develops in macrophages and that spores are uninucleate. New information is provided that sporoblasts and spores develop synchronously within a membrane in the host cell, spores have an anisofilar polar tube of 6-10 wide coils and 2-3 narrow coils and details are given of the spore wall and internal organisation. The parasite was compared on the one hand with Encephalitozoon, which exhibits asynchronous intravacuolar development of merogonic and sporogonic stages and has spores with isofilar polar tubes and on the other hand with species reported from mammals, of which the sporogonic stages develop synchronously within sporophorous vesicles and the spores have anisofilar polar tubes. Even so, a generic emplacement could not be established. Attention is drawn to the similarities between M. ceylonensis and Nosema sp. described from the cornea of a woman in Botswana.
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Mutton AE, Hasleton PS, Curry A, Bishop PW, Egan J, Carroll KB, Hanley S. Differentiation of desquamative interstitial pneumonia (DIP) from pulmonary adenocarcinoma by immunocytochemistry. Histopathology 1998; 33:129-35. [PMID: 9762545 DOI: 10.1046/j.1365-2559.1998.00463.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIM After a misdiagnosis of pulmonary adenocarcinoma as desquamative interstitial pneumonia (DIP), we investigated whether immunohistochemical markers could differentiate these conditions. METHODS AND RESULTS Three cases of DIP and one pulmonary adenocarcinoma masquerading as DIP were studied by light and electron microscopy. All cases were mucin-negative. The cases of DIP were CD68 positive but cytokeratin-negative. The adenocarcinoma was cytokeratin-positive (AE1/3 and CAM5.2), as well as showing some CD68-positive cells. Markers for carcinoma (CEA, Ber-EP4, and Leu M1) were negative in all cases. Ultrastructurally the adenocarcinoma appeared to be derived from Type II pneumocytes. CONCLUSION Before a diagnosis of DIP is made, cytokeratin markers should be used.
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Bull S, Chalmers R, Sturdee AP, Curry A, Kennaugh J. Cross-reaction of an anti-Cryptosporidium monoclonal antibody with sporocysts of Monocystis species. Vet Parasitol 1998; 77:195-7. [PMID: 9746290 DOI: 10.1016/s0304-4017(97)00090-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The non-specific cross-reaction of a fluorescently labelled anti-Cryptosporidium monoclonal antibody was observed microscopically when testing faecal specimens from small mammals. The reactive particles were identified as sporocysts of the Gregarine family Monocystidae, and indicate that considerable care should be taken so that false positives are not recorded.
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Hamour AA, Skelly R, Jowitt SN, Wilson GE, Curry A, Wilkins EG, Mandal BK. Visceral leishmaniasis (Kala-azar) in two patients with HIV-1 infection: atypical features and response to therapy. J Infect 1998; 36:217-20. [PMID: 9570658 DOI: 10.1016/s0163-4453(98)80017-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Visceral leishmaniasis (VL) is a well recognized opportunistic infection in patients with HIV-1 infection, which may occasionally present with atypical features. We describe two patients with advanced HIV-1 infection (CD4<100/ mm3) in whom visceral leishmaniasis presented with atypical features, and their response to therapy. Atypical features of visceral leishmaniasis in the two infected patients include absence of fever, dissemination to the duodenal mucosa and to the skin as xanthoma-like lesions. Therapy and secondary prophylaxis remain unsatisfactory, and studies to evaluate combinations of amphotericin B and immunotherapy are needed.
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Sails AD, Wareing DR, Bolton FJ, Fox AJ, Curry A. Characterisation of 16 Campylobacter jejuni and C. coli typing bacteriophages. J Med Microbiol 1998; 47:123-8. [PMID: 9879954 DOI: 10.1099/00222615-47-2-123] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Taxonomic classification of bacteriophages specific for Campylobacter jejuni and C. coli has not been reported previously. A set of 16 virulent phages, distinguishable by their lytic spectra, has been used extensively for epidemiological typing of C. jejuni and C. coli at Preston Public Health Laboratory. These phages were investigated by electron microscopy, pulsed-field gel electrophoresis and restriction endonuclease analysis. All phages had icosahedral heads and long contractile tails. Accordingly, they were classified as members of the Myoviridae family. These phages could be subdivided into three groups according to genome size and head diameter: group I, two phages with head diameters of 140.6 and 143.8 nm and genome sizes of 320 kb; group II, five phages with average head diameters of 99 nm and average genome sizes of 184 kb; and group III, nine phages with average head sizes of 100 nm and average genome sizes of 138 kb. Phages NCTC12676 and NCTC12677 of group I had unusually large genomes of c. 320 kb which are two of the largest phage genomes to be described. Restriction endonuclease analysis demonstrated that DNA from the 16 phages was refractory to digestion by a number of restriction enzymes.
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Curry A, Smith ST. Information on alternative medicine: a collection management issue. BULLETIN OF THE MEDICAL LIBRARY ASSOCIATION 1998; 86:95-100. [PMID: 9549018 PMCID: PMC226331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Collection management of library materials about alternative medicine may be a growing problem for librarians because differing views exist regarding the acceptability of this information in a public forum. The purpose of the study reported was to investigate possible differences in the views of physicians, medical students, and librarians regarding the availability of information about alternative medicine for both medical students and the general public. Interviews were conducted with two representatives from each group, all of whom are affiliated with the Faculty of Medicine at The University of British Columbia or its library. The study was exploratory in nature, conducted in part to determine whether a larger research project in this area should be mounted. The data revealed considerable differences in opinion about alternative medicine: the librarians were more hesitant about the acceptability of radical or revolutionary materials, particularly those containing information that could result in direct harm to a patient. The physicians and medical students were more confident than the librarians that traditional medical treatment (and therefore information about it) should always be paramount.
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Bryden AS, Curry A, Cotterill H, Chesworth C, Sharp I, Wood SR. Adenovirus-associated gastro-enteritis in the north-west of England: 1991-1994. Br J Biomed Sci 1997; 54:273-7. [PMID: 9624738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Faeces, positive for adenoviruses by electron microscopy on initial examination at Manchester Public Health Laboratory (PHL) or Preston PHL during the period 1991-1994, were examined by an enzyme immunoassay which differentiated Ad40, Ad41 and non-AdF strains. Isolation and serotyping by neutralisation of non-AdF strains were attempted in PLC/PRF/5 cells. Of 452 specimens examined, 99 (22%) contained Ad40, 209 (46%) Ad41 and 144 (32%) non-AdF serotypes. From 1991 to 1993 the ratio of Ad40 to Ad41 was constant at approximately 1 to 1.6, but in 1994 it was almost 1 to 5. Non-AdF serotypes, of which Ad1 and Ad2 were the most common, accounted for 44% of specimens tested from 1991, but this dropped to 20% of those from 1994. An age/sex analysis showed that half the specimens examined were from infants under one year old, and that overall the male/female ratio was 3 to 2. The significance of these results is discussed, including the changing prevalence of Ad40 and Ad41, and the role of non-AdF serotypes in gastro-enteritis.
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Canning EU, Okamura B, Curry A. A New Microsporidium, Nosema cristatellae n. sp. in the Bryozoan Cristatella mucedo (Bryozoa, Phylactolaemata). J Invertebr Pathol 1997; 70:177-83. [PMID: 9367723 DOI: 10.1006/jipa.1997.4687] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A microsporidian infecting cells of the body wall of the phylactolaemate bryozoan Cristatella mucedo is described. All stages of the parasite are diplokaryotic and lie in direct contact with the host cell cytoplasm. Sporogony is probably disporoblastic. Spores measure 7.5 x 5.1 &mgr;m and have 22-32 coils of the polar tube arranged in several rows and a bell-like polaroplast of compact membranes. The parasite is assigned to the genus Nosema as a new species, Nosema cristatellae. It is differentiated from the previously described parasites of Alcyonella (=Plumatella) fungosa (Bryozoa), named Myxosporidium bryozoides and Nosema bryozoides, by spore characters and tissue specificity. Although it was found in a different species of bryozoan, it is not known whether N. cristatellae is infective to P. fungosa. Copyright 1997 Academic Press. Copyright 1997 Academic Press
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Kyaw T, Curry A, Edwards-Jones V, Craske J, Mandal BK. The prevalence of Enterocytozoon bieneusi in acquired immunodeficiency syndrome (AIDS) patients from the north west of England: 1992-1995. Br J Biomed Sci 1997; 54:186-91. [PMID: 9499596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Microsporidia are increasingly being recognised as important enteric pathogens in patients with advanced human immunodeficiency virus (HIV) disease, i.e. acquired immunodeficiency syndrome (AIDS). The aims of this study were to investigate the frequency of detection of microsporidia associated with diarrhoea in patients with advanced HIV disease in the north west of England, and to determine the species involved and their prevalence. During the period from April 1992 to the end of December 1995, chronic diarrhoea in 88 patients in the late stage of HIV disease was investigated. Duodenal biopsies, duodenal aspirates or jejunal biopsies were received from 38 patients, and stool samples from 63 patients, as part of the routine investigation of possible causes of diarrhoea in these patients. Biopsies and aspirates were examined by thin-section electron microscopy (EM), and stool samples were examined by epi-fluorescence microscopy after staining with Calcofluor. Putative stool positives were confirmed by transmission electron microscopy. CD4-lymphocyte counts were available from all patients who provided samples. Nine out of 63 patients (14.3%) were found to be excreting microsporidial spores on stool examination. The species was confirmed as Enterocytozoon bieneusi. The mean CD4-lymphocyte count for this group was 37 x 10(6)/L (normal range 517-1677 x 10(6)/L). Three out of 38 biopsy specimens (7.9%) were also found to be infected with this microsporidian. The mean CD4-lymphocyte count for this group was 72 x 10(6)/L. Encephalitozoon intestinalis was not found in any samples examined. The prevalence of microsporidial infection in AIDS patients in the north west of England appears to be similar to that of patients in London, but less than that reported in studies from other developed countries.
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Isalska BJ, Curry A, Stanbridge TN, Tweddle D, Caul EO. Electron microscopy and serological features of a patient with Q fever prosthetic valve endocarditis. J Clin Pathol 1996; 49:679-81. [PMID: 8881923 PMCID: PMC500616 DOI: 10.1136/jcp.49.8.679] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The clinical, serological and electron microscopic findings in a 47 year old woman with bioprosthetic valve coxiella endocarditis occurring 15 years after streptococcal endocarditis are described. The patient underwent valvular surgery a total of four times to control symptoms and remains well on medical therapy more than two years after her last operation.
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Curry A. Teaching the deaf to talk. S Afr Med J 1996; 86:846. [PMID: 8928054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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Pearson JM, McWilliam IJ, Coyne JD, Curry A. Assessment of renal biopsy specimens. J Clin Pathol 1996; 49:614. [PMID: 8813972 PMCID: PMC500588 DOI: 10.1136/jcp.49.7.614-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Pitt MA, Roberts IS, Curry A. Spindle cell and pleomorphic lipoma: an ultrastructural study. Ultrastruct Pathol 1995; 19:475-80. [PMID: 8597202 DOI: 10.3109/01913129509014622] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Spindle cell and pleomorphic lipoma are rare benign tumors of adipose tissue. Their histogenesis is poorly understood and pleomorphic lipoma has not previously been studied ultrastructurally. This study describes the morphology and ultrastructure of 6 cases of spindle cell and pleomorphic lipoma. Both spindle cell and pleomorphic lipomas showed similar ultrastructural features with an interrupted basal lamina, occasional non-membrane-bound lipid vacuoles and abundant rER. In all the cases mast cells were conspicuous and were intimately related to both spindle and pleomorphic cells. It is proposed that both the spindle and pleomorphic multinucleated cells that characterize these tumors are prelipoblastic mesenchymal cells. The possible significance of an interaction between these cells and mast cells is discussed.
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Coyne JD, Curry A, Purnell P, Haboubi NY. Colonic tubular adenomas and intestinal spirochaetosis: an incompatible association. Histopathology 1995; 27:377-9. [PMID: 8847070 DOI: 10.1111/j.1365-2559.1995.tb01530.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Two cases of tubulovillous adenoma and adjacent colonic mucosa were studied in which intestinal spirochaetosis had heavily colonized the non-neoplastic but not the neoplastic epithelium. Ultrastructural and histochemical studies were performed and we postulate that the reason for this disparity is the normal microvillous pattern of the non-neoplastic epithelium which facilitates colonization by the spirochaetes.
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Curry A, Chadwick PR, Caul EO. Small round viruses and gastroenteritis. Lancet 1994; 344:693-4. [PMID: 7915389 DOI: 10.1016/s0140-6736(94)92134-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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