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Krmar RT, Holtbäck U, Linné T, Berg UB, Celsi G, Söderberg MP, Wernerson A, Szakos A, Larsson S, Skattum L, Bárány P. Acute renal failure in dense deposit disease: complete recovery after combination therapy with immunosuppressant and plasma exchange. Clin Nephrol 2011; 75 Suppl 1:4-10. [PMID: 21269585] [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: 05/30/2023] Open
Abstract
We describe the clinical course of a female adolescent who was followed because of isolated microhematuria and hypocomplementemia before admission to hospital with a sudden onset of acute renal failure. At presentation, she exhibited complement consumption through the complement alternative pathway (AP) while other serologic tests were negative. Renal biopsy revealed dense deposit disease (DDD) with a crescentic pattern. Intravenous methylprednisolone, followed by plasma exchange (PE), and intravenous cyclophosphamide pulses were started shortly after admission. C3NeF and anti-factor H antibody tests were negative. Serum factor H and I levels were normal as well as factor H activity. Screening for mutation in the factor H gene revealed the H402 allele variant. Clinical remission, defined as normalization in renal function and in the activity levels of the complement AP, was noted at one month post-presentation and throughout the follow-up. A repeat renal biopsy showed the disappearance of crescent formation, whereas electron microscopy revealed no regression in dense transformation of the lamina densa. In summary, our patient was successfully treated with immunosuppressant and PE. The absence of known factors associated with DDD suggests that, in this particular case, other regulatory mechanisms of complement AP might have been involved in the disease process.
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Affiliation(s)
- R T Krmar
- Karolinska Institute, Department for Clinical Science, Intervention and Technology, Division of Pediatrics, Karolinska University Hospital, Huddinge, Sweden.
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Linné T, Oliw E, Aperia A. Urinary excretion of prostaglandin F2 alpha and 6-keto-prostaglandin F1 alpha during volume expansion in patients with glomerulonephritis. Acta Med Scand 2009; 212:319-23. [PMID: 6960642 DOI: 10.1111/j.0954-6820.1982.tb03222.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Thirteen patients with active IgA glomerulonephritis (IgA GN), ten patients with a history of Henoch-Schönlein glomerulonephritis (HS GN) and nine healthy controls were studied during hydropenia (HP) and 3% volume expansion (VE) with isotonic saline. Clearance of inulin and para-aminohippurate, urinary excretion of Na, immunoreactive prostaglandin F2 alpha (PGF2 alpha) and 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha) were determined. The patients with a history of HS GN had normal blood pressure and renal function. As in the controls, the urinary excretion of PGF 2 alpha decreased and the excretion of 6-keto-PGF1 alpha increased during VE. In the patients with IgA GN the glomerular filtration rate (GFR) was normal, markedly reduced and supernormal. Five patients had hypertension and an increased NA excretion in relation to the GFR during VE. As a group, the patients with IgA GN increased their urinary excretion of 6-keto-PGF1 alpha during VE, while the excretion of PGF2 alpha did not change. In relation to the GFR, the urinary excretion of PGF2 alpha and 6-keto-PGF1 alpha was markedly increased in two patients with low GFR, which implies that these substances play a role in advanced renal disease. VE had little effect on PG excretion in these patients. In the hypertensive patients the urinary excretion of PGF2 alpha and 6-keto-PGF1 alpha was the same as in those with normal blood pressure. PGs are therefore not likely to mediate the increased natriuretic response to VE in hypertension.
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Glimelius B, Ristamäki R, Kjaer M, Pfeiffer P, Skovsgaard T, Tveit KM, Linné T, Frödin JE, Boussard B, Oulid-Aïssa D, Pyrhönen S. Irinotecan combined with bolus 5-fluorouracil and folinic acid Nordic schedule as first-line therapy in advanced colorectal cancer. Ann Oncol 2002; 13:1868-73. [PMID: 12453854 DOI: 10.1093/annonc/mdf324] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [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: 11/13/2022] Open
Abstract
BACKGROUND This multicentre phase II study evaluated the efficacy and safety of irinotecan combined with the Nordic schedule of 5-fluorouracil (5-FU) and folinic acid (FA) as first-line therapy in patients with advanced colorectal cancer. PATIENTS AND METHODS Seventy-four patients with measurable disease and a WHO performance status of 2 or less were treated with irinotecan 210 mg/m(2) as a 30-90 min intravenous infusion on day 1, followed by 5-FU 500 mg/m(2) and FA 60 mg/m(2) bolus on days 1 and 2, every 2 weeks, until disease progression or unacceptable toxicity. The primary end point was the objective response rate. RESULTS Twenty-nine out of 68 evaluable patients achieved a complete (n = 7) or partial (n = 22) response, leading to an overall response rate of 43% [95% confidence interval (CI) 31% to 55%]. The median duration of response was 10 months. The estimated median time to progression and survival were 6.4 months (95% CI 5.4-9.0) and 15.6 months (95% CI 13.3-19.0), respectively, in the intention-to-treat population. A total of 860 cycles were administered to 74 patients. Neutropenia was the main adverse event with grade 3-4 toxicity in 66% of patients and 17.5% of cycles. Grade 3-4 non-haematological toxicities were infrequent and included diarrhoea in 16% of patients and 2% of cycles and nausea/vomiting in 10% of patients and 1% of cycles. CONCLUSIONS Irinotecan combined with the bolus Nordic schedule of 5-FU/FA is active in advanced colorectal cancer with an easily managed safety profile which ensures good schedule compliance. The low incidence of grade 3-4 non-haematological toxicity justifies the further evaluation of this combination in the context of randomised clinical trials.
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Affiliation(s)
- B Glimelius
- Department of Oncology, Radiology and Clinical Immunology, Uppsala University Hospital, Sweden.
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Ristamäki R, Glimelius B, Linné T, Boussard B, Oulid-Aïssa D, Pyrhonen S. Phase I of CPT-11 (CAMPTO®) combined with 5-FU/folinic acid (FA) nordic schedule in first line metastatic colorectal cancer (CRC). Eur J Cancer 1999. [DOI: 10.1016/s0959-8049(99)80685-6] [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: 10/27/2022]
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Wiman AC, Hjertner B, Linné T, Herron B, Allan G, McNeilly F, Adair B, Moreno-López J, Berg M. Porcine rubulavirus LPMV RNA persists in the central nervous system of pigs after recovery from acute infection. J Neurovirol 1998; 4:545-52. [PMID: 9839652 DOI: 10.3109/13550289809113499] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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: 11/13/2022]
Abstract
In order to study persistence of the porcine rubulavirus LPMV, we examined tissue samples collected from pigs 53 days after experimental infection. These pigs survived the initial infection and could clinically be considered to have recovered from the infection. Two of the pigs used in this study were chemically immunosuppressed during the last 4 days before necropsy. No infectious virus or viral antigen could be detected in any tissue using standard methods for virus isolation and detection. However, the presence of viral genomic RNA and mRNA could be demonstrated in the mid brain of the convalescent pig using an optimised RT-nested PCR. Mid brain, forebrain and lung were all shown to contain LPMV RNA in the immunosuppressed convalescent pigs. In addition we examined the P-gene editing in the recovered pigs and conclude that the viral genome is transcriptionally active in these pigs. The relevance of the persistence of LPMV for maintenance and spread within and/or between pig populations is discussed.
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Affiliation(s)
- A C Wiman
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Biomedical Centre, Uppsala
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6
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Hjertner B, Wiman AC, Svenda M, Berg M, Moreno-López J, Linné T. Multiple factors including subgenomic RNAs and reduced viral protein expression are associated with a persistent infection by porcine rubulavirus (LPMV). Arch Virol 1998; 143:425-39. [PMID: 9572545 DOI: 10.1007/s007050050300] [Citation(s) in RCA: 8] [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: 02/07/2023]
Abstract
The synthesis of virus specific RNA and the expression of viral proteins in PK-15 cells persistently infected with the porcine rubulavirus LPMV have been studied at two different cell-passages following establishment of persistency (passages 25 and 65). Protein analysis of persistently infected cells and the virus particles released from these failed to demonstrate the presence of the polymerase (L) protein. A decrease in the amount of the phospho- (P) protein was also noted. The genome and mRNAs, both mono- and bicistronic, could readily be identified in the persistently infected cells with the exception of the L mRNA. By analysis of transcription gradients generated using the NIH Image analysis software, as well as analysis of the editing frequency, it was concluded that the changes in viral protein levels in persistently infected cells could be associated with a reduction in the amount of L mRNA and a shift in editing of the P gene. In addition, several large subgenomic RNAs of both the internally deleted and copy-back type were found in the persistently infected cells. The relevance of these findings to the persistent state is discussed.
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Affiliation(s)
- B Hjertner
- Department of Veterinary Microbiology, Biomedical Centre, Swedish University of Agricultural Sciences, Uppsala
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Glimelius B, Linné T, Hoffman K, Larsson L, Svensson JH, Näsman P, Svensson B, Helmers C. Epoetin beta in the treatment of anemia in patients with advanced gastrointestinal cancer. J Clin Oncol 1998; 16:434-40. [PMID: 9469326 DOI: 10.1200/jco.1998.16.2.434] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [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: 02/06/2023] Open
Abstract
PURPOSE The possibility that epoetin beta (EPO) could increase hemoglobin (B-Hb) levels and improve quality of life (QoL) in patients with advanced gastrointestinal cancers was investigated. PATIENTS AND METHODS One hundred patients with gastric, pancreatic, biliary, or colorectal cancers and subnormal B-Hb levels were included in a randomized study to test low-dose EPO (2,000 U subcutaneously thrice weekly [2,000 group]) against a higher dose (10,000 U times three [10,000 group]). Eighty-four patients were treated with chemotherapy. QoL was evaluated using the European Organization for Research and Treatment of Cancer (EORTC) QLQ-C30 instrument. RESULTS At baseline, mean B-Hb was 108 g/L with no difference between the groups. In the 10,000 group, an increase in B-Hb (>10 g/L) was seen in 30 (73%) patients treated with chemotherapy, after a median of 4 weeks, whereas a corresponding increase in the 2,000 group was seen in 15 (30%) patients after a median of 10 weeks (P < .001). A difference in the proportion of responders (five of eight v one of eight) was also seen in the group of patients not treated with chemotherapy. The proportion of responders was independent of baseline endogenous serum EPO level or observed/predicted log10 serum (S)-EPO levels. Patients who demonstrated improved B-Hb levels also showed improvements in QoL parameters. Tumor response was usually also associated with QoL improvements. CONCLUSION Treatment with EPO at a dose of 10,000 U thrice weekly can rapidly and safely increase B-Hb levels in a high proportion of patients with advanced gastrointestinal cancers. QoL is influenced by the B-Hb increase, but also by the course of the underlying malignancy. It is therefore difficult to define clearly the clinical relevance of the B-Hb increase as such.
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Oxburgh L, Akerblom L, Fridberger T, Klingeborn B, Linné T. Identification of two antigenically and genetically distinct lineages of H3N8 equine influenza virus in Sweden. Epidemiol Infect 1998; 120:61-70. [PMID: 9528819 PMCID: PMC2809350 DOI: 10.1017/s0950268897008315] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 02/07/2023] Open
Abstract
Four Swedish strains of equine H3N8 influenza virus isolated from outbreaks during the last 4 years were characterized. Antigenic typing using monoclonal antibodies raised against a variety of H3N8 strains showed that the viruses are heterogeneous, the 1993 isolate being closely related to the 1991 Swedish isolate TAB/91 and the other three isolates from 1994 and 1996 being more closely related to each other. This pattern is reflected in the phylogenetic data calculated from nucleotide sequencing of the haemagglutinin genes. H3N8 equine influenza can be seen to be evolving in two distinct lineages, one European and one American. The 1993 isolate is closely related to the European lineage and is the most recent Swedish strain of this lineage to be isolated. The 1994 and 1996 isolates fit into the American lineage, which contains recent isolates from the United States and also Britain. These results indicate that American-type H3N8 viruses have become endemic in Sweden and, in light of the antigenic differences which can be observed between viruses belonging to the two lineages, we believe that equine influenza virus vaccines should be updated with an American-type virus strain.
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Affiliation(s)
- L Oxburgh
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Biomedical Centre, Uppsala
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Westlin JE, Andersson-Forsman C, Garske U, Linné T, Aas M, Glimelius B, Lindgren PG, Order SE, Nilsson S. Objective responses after fractionated infusional brachytherapy of unresectable pancreatic adenocarcinomas. Cancer 1997; 80:2743-8. [PMID: 9406733 DOI: 10.1002/(sici)1097-0142(19971215)80:12+<2743::aid-cncr54>3.3.co;2-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND The prognosis of unresectable pancreatic adenocarcinoma is poor. Therefore, the treatment potential of an intratumoral infusional brachytherapy using macroaggregated human albumin in combination with radioactive chromic phosphate [32P] was investigated in this group of patients. METHODS Seventeen patients with unresectable tumors received intratumoral infusional brachytherapy. Treatment and assessment of response was performed with the aid of ultrasonography. RESULTS Four patients had complete response with a duration ranging from 2-57 weeks and 5 patients had partial response with a duration ranging from 4-21 weeks, corresponding to an objective response of 53% (9 of 17 patients). Six of these patients were alive 33-57 weeks after treatment. Radiation necrosis was observed in 1 patient after a 19,000-gray cumulative radiation dose and a slight decrease in blood counts was observed in 2 patients. CONCLUSIONS Intratumoral infusional brachytherapy using radioactive colloidal chromic phosphate has the potential to reduce inoperable pancreatic tumors with few side effects.
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Affiliation(s)
- J E Westlin
- Department of Oncology, University Hospital, Uppsala, Sweden
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Westlin JE, Andersson-Forsman C, Garske U, Linné T, Aas M, Glimelius B, Lindgren PG, Order SE, Nilsson S. Objective responses after fractionated infusional brachytherapy of unresectable pancreatic adenocarcinomas. Cancer 1997. [PMID: 9406733 DOI: 10.1002/(sici)1097-0142(19971215)80:12+<2743::aid-cncr54>3.3.co;2-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND The prognosis of unresectable pancreatic adenocarcinoma is poor. Therefore, the treatment potential of an intratumoral infusional brachytherapy using macroaggregated human albumin in combination with radioactive chromic phosphate [32P] was investigated in this group of patients. METHODS Seventeen patients with unresectable tumors received intratumoral infusional brachytherapy. Treatment and assessment of response was performed with the aid of ultrasonography. RESULTS Four patients had complete response with a duration ranging from 2-57 weeks and 5 patients had partial response with a duration ranging from 4-21 weeks, corresponding to an objective response of 53% (9 of 17 patients). Six of these patients were alive 33-57 weeks after treatment. Radiation necrosis was observed in 1 patient after a 19,000-gray cumulative radiation dose and a slight decrease in blood counts was observed in 2 patients. CONCLUSIONS Intratumoral infusional brachytherapy using radioactive colloidal chromic phosphate has the potential to reduce inoperable pancreatic tumors with few side effects.
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Affiliation(s)
- J E Westlin
- Department of Oncology, University Hospital, Uppsala, Sweden
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Glimelius B, Ekström K, Hoffman K, Graf W, Sjödén PO, Haglund U, Svensson C, Enander LK, Linné T, Sellström H, Heuman R. Randomized comparison between chemotherapy plus best supportive care with best supportive care in advanced gastric cancer. Ann Oncol 1997. [PMID: 9093725 DOI: 10.1023/a: 1008243606668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The extent to which chemotherapy may relieve tumour-related symptoms, improve quality of life and prolong survival in patients with gastric cancer is not known in spite of the extensive use of this treatment modality. The aim of this study was to estimate any gain in the quantity and quality of life produced by chemotherapy in these patients. PATIENTS AND METHODS Between January 1991 and February 1995, 61 patients with gastric cancer were randomized to either chemotherapy in addition to best supportive care or to best supportive care. Chemotherapy was allowed in the latter group if the supportive measures did not lead to palliation. Chemotherapy was the ELF-regimen consisting of 5-fluorouracil, leucovorin and etoposide, or, in elderly patients with poor performance, a 5-fluorouracil/leucovorin regimen (FLv). Quality of life was evaluated with the EORTC-QLQ-C30 instrument. RESULTS More patients in the chemotherapy group (45%, 14/31) had an improved or prolonged high quality of life for a minimum period of 4 months compared to those in the best supportive care group (20%, 6/30, P < 0.05). A similar difference was seen in the treating physician's evaluation of whether the patient was subjectively improved or continued to do well for at least 4 months (17/31, 55% versus 6/30, 20%, P < 0.01). Overall survival was longer in the chemotherapy group (median 8 vs. 5 months) although the difference was not statistically significant (P = 0.12). After corrections for imbalances in pretreatment characteristics, chemotherapy treatment was, however, associated with a survival benefit (P = 0.003). Also, the quality-adjusted survival time and time to disease progression were longer for patients randomized to chemotherapy (median 5 vs. 2 months, P = 0.03). CONCLUSIONS The results show that chemotherapy can add to both quantity and quality of life in advanced gastric cancer. The number of patients who benefit from treatment is, however, still rather limited.
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Affiliation(s)
- B Glimelius
- Department of Oncology, University of Uppsala, Sweden
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12
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Svenda M, Berg M, Moreno-López J, Linné T. Analysis of the large (L) protein gene of the porcine rubulavirus LPMV: identification of possible functional domains. Virus Res 1997; 48:57-70. [PMID: 9140194 DOI: 10.1016/s0168-1702(96)01426-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [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: 02/04/2023]
Abstract
The complete nucleotide sequence of the porcine rubulavirus LPMV (La Piedad Michoacan virus) large (L) protein gene was determined and analysed. The L mRNA was found to span 6,786 nucleotides, containing one single large open reading frame (ORF), putatively encoding a polypeptide of 2,251 amino acids. By aligning the amino acid sequence of the LPMV L-protein with L-protein of a number of viruses belonging to the order mononegavirale, a high degree of similarity between the LPMV L-protein and other rubula virus L-proteins was demonstrated, extending through almost the whole protein. Additionally we could identify several regions as being highly conserved among all studied viruses of the order mononegavirale. The significance of these regions are discussed.
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Affiliation(s)
- M Svenda
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
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Glimelius B, Ekström K, Hoffman K, Graf W, Sjödén PO, Haglund U, Svensson C, Enander LK, Linné T, Sellström H, Heuman R. Randomized comparison between chemotherapy plus best supportive care with best supportive care in advanced gastric cancer. Ann Oncol 1997; 8:163-8. [PMID: 9093725 DOI: 10.1023/a:1008243606668] [Citation(s) in RCA: 586] [Impact Index Per Article: 21.7] [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: 02/04/2023] Open
Abstract
BACKGROUND The extent to which chemotherapy may relieve tumour-related symptoms, improve quality of life and prolong survival in patients with gastric cancer is not known in spite of the extensive use of this treatment modality. The aim of this study was to estimate any gain in the quantity and quality of life produced by chemotherapy in these patients. PATIENTS AND METHODS Between January 1991 and February 1995, 61 patients with gastric cancer were randomized to either chemotherapy in addition to best supportive care or to best supportive care. Chemotherapy was allowed in the latter group if the supportive measures did not lead to palliation. Chemotherapy was the ELF-regimen consisting of 5-fluorouracil, leucovorin and etoposide, or, in elderly patients with poor performance, a 5-fluorouracil/leucovorin regimen (FLv). Quality of life was evaluated with the EORTC-QLQ-C30 instrument. RESULTS More patients in the chemotherapy group (45%, 14/31) had an improved or prolonged high quality of life for a minimum period of 4 months compared to those in the best supportive care group (20%, 6/30, P < 0.05). A similar difference was seen in the treating physician's evaluation of whether the patient was subjectively improved or continued to do well for at least 4 months (17/31, 55% versus 6/30, 20%, P < 0.01). Overall survival was longer in the chemotherapy group (median 8 vs. 5 months) although the difference was not statistically significant (P = 0.12). After corrections for imbalances in pretreatment characteristics, chemotherapy treatment was, however, associated with a survival benefit (P = 0.003). Also, the quality-adjusted survival time and time to disease progression were longer for patients randomized to chemotherapy (median 5 vs. 2 months, P = 0.03). CONCLUSIONS The results show that chemotherapy can add to both quantity and quality of life in advanced gastric cancer. The number of patients who benefit from treatment is, however, still rather limited.
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Affiliation(s)
- B Glimelius
- Department of Oncology, University of Uppsala, Sweden
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Hjertner B, Linné T, Moreno-López J. Establishment and characterisation of a porcine rubulavirus (LPMV) persistent infection in porcine kidney cells. Acta Vet Scand 1997; 38:213-24. [PMID: 9444775 PMCID: PMC8057016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Porcine rubulavirus (LPMV) can establish persistent infections in porcine kidney cells. Cell cultures characterised at passages 25 and 65 demonstrated haemadsorption, formation of syncytia, and a slower growth rate. The nucleoprotein (NP) and haemagglutinin-neuraminidase (HN) protein were present in all cells, although not to the same extent as in wild type infected cells. Incubation of the cell cultures with virus neutralising antibodies could not cure them from the infection. The cells were resistant to LPMV high multiplicity superinfection, but lysed rapidly upon infection with VSV. These cells thus fulfilled the criteria of a true persistent infection. Viral particles were released into the medium from the persistently infected cells as measured by HA and infection of PK-15 cells with medium from the persistently infected cells. The infectious titer of the virus released from the persistently infected cells was 3 logs lower compared to wild type virus, the HN titer still being comparable. Virus released from the persistently infected cells was unable to cause a lytic infection in PK-15 cells, and showed a reduced ability to spread when compared to a LPMV lytic infection.
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Affiliation(s)
- B Hjertner
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
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Berg M, Bergvall AC, Svenda M, Sundqvist A, Moreno-López J, Linné T. Analysis of the fusion protein gene of the porcine rubulavirus LPMV: comparative analysis of paramyxovirus F proteins. Virus Genes 1997; 14:55-61. [PMID: 9208455 DOI: 10.1023/a:1007987407250] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [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: 02/04/2023]
Abstract
Complementary DNA clones representing the fusion (F) protein gene of the porcine rubulavirus LPMV were isolated and sequenced. The F gene was found to be 1,845 nucleotides long containing one long open reading frame capable of encoding a protein of 541 amino acids. The cleavage motif for F0 into F1 and F2 is His-Arg-Lys-Lys-Arg. A sequence comparison and a phylogenetic analysis was performed in order to identify possible functional domains of paramyxovirus fusion proteins and also to classify the porcine rubulavirus. The F gene of LPMV is most closely related to the human mumps virus and simian virus type 5 F genes, and is therefore classified into the rubulavirus genus. A coding region for a small hydrophobic protein was however not found between the F and hemagglutinin-neuraminidase (HN) genes as previously found in both SV5 and mumps.
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Affiliation(s)
- M Berg
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Biomedical Center, Uppsala, Sweden
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16
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Hjertner B, Linné T, Moreno-Lόpez J. Establishment and characterisation of a porcine rubulavirus (LPMV) persistent infection in porcine kidney cells. Acta Vet Scand 1997. [PMID: 9444775 DOI: 10.1186/bf03548484] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Porcine rubulavirus (LPMV) can establish persistent infections in porcine kidney cells. Cell cultures characterised at passages 25 and 65 demonstrated haemadsorption, formation of syncytia, and a slower growth rate. The nucleoprotein (NP) and haemagglutinin-neuraminidase (HN) protein were present in all cells, although not to the same extent as in wild type infected cells. Incubation of the cell cultures with virus neutralising antibodies could not cure them from the infection. The cells were resistant to LPMV high multiplicity superinfection, but lysed rapidly upon infection with VSV. These cells thus fulfilled the criteria of a true persistent infection. Viral particles were released into the medium from the persistently infected cells as measured by HA and infection of PK-15 cells with medium from the persistently infected cells. The infectious titer of the virus released from the persistently infected cells was 3 logs lower compared to wild type virus, the HN titer still being comparable. Virus released from the persistently infected cells was unable to cause a lytic infection in PK-15 cells, and showed a reduced ability to spread when compared to a LPMV lytic infection.
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Abstract
There is experimental evidence that loss of renal parenchyma results in hyperfiltration in the remnant glomeruli followed by development of glomerulosclerosis. Microalbuminuria, i.e., a urinary albumin excretion rate of 20-200 micrograms/min, is considered to be an early predictor of diabetic glomerulosclerosis. Hypothetically, increased urinary albumin excretion in patients with pyelonephritic scarring may also indicate glomerulosclerosis, with risk for future deterioration of renal function. This study was performed to determine the incidence of increased albumin excretion in children with mild to moderate pyelonephritic scarring, and to relate the information to glomerular filtration rate (GFR; clearance of inulin) and effective renal plasma flow (clearance of para-aminohippuric acid), as well as to the degree of scarring. The functional investigations were performed under water diuresis. Fifty-seven children, aged 1.7-17.9 years, with pyelonephritic renal scarring were included in the study. Nine young healthy adults were used as controls. The GFR was significantly lower in the children with pyelonephritic scarring than in the controls (median 93 ml/min per 1.73 m2, range 48-133 vs. 111 ml/min per 1.73 m2, range 89-121, P < 0.05), and the urine albumin excretion was significantly higher (median 20 micrograms/min per 100 ml GFR, range 0.8-170 vs. 9.2 micrograms/min per 100 ml GFR, range 3.3-21, P < 0.05). An inverse correlation was found between urine albumin excretion and GFR. Increased urine albumin excretion was found in 70% of the children with a GFR below 90 ml/min per 1.73 m2 compared with 41% of the children with a GFR above this level. Increased urine albumin excretion (> 20 micrograms/min per 100 ml GFR) was found in 51% of the children with pyelonephritic scarring, while only 14% had increased age-adjusted serum creatinine concentrations. The high incidence of microalbuminuria in children with pyelonephritic scarring indicates long-term follow-up until the ultimate outcome has been better defined.
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Affiliation(s)
- J Karlén
- Department of Pediatrics, St. Göran's Children's Hospital, Stockholm, Sweden
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18
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Glimelius B, Hoffman K, Sjödén PO, Jacobsson G, Sellström H, Enander LK, Linné T, Svensson C. Chemotherapy improves survival and quality of life in advanced pancreatic and biliary cancer. Ann Oncol 1996; 7:593-600. [PMID: 8879373 DOI: 10.1093/oxfordjournals.annonc.a010676] [Citation(s) in RCA: 602] [Impact Index Per Article: 21.5] [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: 02/02/2023] Open
Abstract
BACKGROUND In certain patients with pancreatic and biliary cancer, chemotherapy may relieve tumour-related symptoms, improve quality of life and possibly prolong survival. The extent of these improvements is not completely known in spite of the extensive use of this treatment modality. The aim of this study was to estimate any gain in the quantity and quality of life produced by chemotherapy in patients with pancreatic and biliary cancer. PATIENTS AND METHODS Between January 1991 and February 1995, 90 eligible patients with pancreatic or biliary cancer were randomized to either chemotherapy in addition to best supportive care or to best supportive care. Chemotherapy was allowed in the latter group if the supportive measures did not lead to palliation. Chemotherapy was either sequential 5-fluorouracil/leucovorin combined with etoposide (FELv) or, in elderly and poor performance patients, the same regimen without etoposide (FLv). Quality of life was evaluated with the EORTC-QLQ-C30 instrument. RESULTS Mean scale scores in the QLQ-C30 improved more often/deteriorated less frequently in the chemotherapy group than in the best supportive care group. More patients in the chemotherapy group (36%, 17/49) had an improved or prolonged high quality of life for a minimum period of 4 months compared to those in the best supportive care group (10%, 4/41, P < 0.01). Overall survival was significantly longer in the chemotherapy group (median 6 vs. 2.5 months, P < 0.01). Also, the quality-adjusted survival time was longer for patients randomized to chemotherapy (median 4 vs. 1 months, P < 0.01). The effects were seen both in pancreatic and biliary cancer. CONCLUSIONS The results show that chemotherapy can add to both quantity and quality of life in advanced pancreatic and biliary cancer. The number of patients who benefit from treatment is, however, still limited; for this reason careful selection before, and close monitoring during, treatment are necessary.
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Affiliation(s)
- B Glimelius
- Department of Oncology, University of Uppsala, Sweden
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19
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Glimelius B, Hoffman K, Sjődén PO, Jacobsson G, Sellstrőm H, Linné T, Enander LK, Svensson C. 555 Palliative chemotherapy improves survival and quality of life in advanced pancreatic and biliary cancer. Eur J Cancer 1995. [DOI: 10.1016/0959-8049(95)95809-k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Baloda SB, Krovacek K, Eriksson L, Linné T, Månsson I. Detection of aerolysin gene in Aeromonas strains isolated from drinking water, fish and foods by the polymerase chain reaction. Comp Immunol Microbiol Infect Dis 1995; 18:17-26. [PMID: 7889729 DOI: 10.1016/0147-9571(94)e0001-a] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [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: 01/27/2023]
Abstract
A polymerase chain reaction (PCR) technique was used to assay the presence of the aerolysin gene in a total of 89 Aeromonas hydrophila and A. sobria strains isolated from drinking water, fish and foods. These strains were also characterized for the production of virulence factors such as haemolysin, protease and cytotoxin. The primers used in the PCR targeted a 209-bp fragment of the aer gene coding for the beta-haemolysin and detected template DNA only in haemolytic A. hydrophila strains. The cell-free culture supernatants of these aerolysin-positive A. hydrophila strains were also cytotoxic to the HeLa and McCoy cells. The haemolytic A. sobria and non-haemolytic A. hydrophila were consistently negative in the PCR assay. Primer specificity was determined in the PCR by using a control haemolytic Escherichia coli, Streptococcus pyogenes and a restriction endonuclease assay. The PCR clearly identified the aerolysin-producing strains of A. hydrophila and may have application as a rapid species-specific virulence test.
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Affiliation(s)
- S B Baloda
- Section of Bacteriology and Epizootology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala
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21
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Linné T, Fituri O, Escobar-Billing R, Karlsson A, Wikstad I, Aperia A, Tullus K. Functional parameters and 99mtechnetium-dimercaptosuccinic acid scan in acute pyelonephritis. Pediatr Nephrol 1994; 8:694-9. [PMID: 7696107 DOI: 10.1007/bf00869092] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The diagnostic value of 99mtechnetium-dimercaptosuccinic acid (DMSA) scintigraphy, ultrasonography and renal functional parameters [urine N-acetyl-beta-D-glucosaminidase (NAG)/creatinine and urine albumin/creatinine quotients] in acute pyelonephritis (APN) were studied in 39 children (28 girls, 11 boys, median age 9 months, range 2 weeks to 9.4 years, 28 patients < 1 year, 11 patients > 1 year) with first-time urinary tract infection. Ultrasonography of the urinary tract was performed on admission and together with DMSA scintigraphy (< 10 days from admission). Urine NAG/creatinine and urine albumin/creatinine quotients were measured daily and after 6-8 weeks. Ultrasonography revealed abnormalities in 12 of 39 (31%) patients [11/32 patients (34%) with positive DMSA scintigraphy], while DMSA uptake defects were present in 32 of 39 (82%) patients [21/28 < 1 year (75%), 11/11 > 1 year (100%), P = 0.08]. Urine NAG/creatinine and urine albumin/creatinine quotients were significantly higher in children < 1 year with APN, as well as in non-renal fever controls, than in older children. However, in both age groups the urine NAG/creatinine and urine albumin/creatinine quotients were significantly higher in APN than in non-renal fever. The urine NAG and albumin excretion decreased rapidly after the initiation of antimicrobial therapy and had normalized at 6-8 weeks. The size and grade of the DMSA uptake defect (DMSA score) did not correlate with duration of disease at admission, maximum C-reactive protein or maximum fever. The urine NAG/creatinine quotient in the children < 1 year showed, however, a significant correlation with the DMSA score (r = 0.58, P < 0.05), while no correlation was found in the older children. We conclude that DMSA scintigraphy is a sensitive method to confirm the clinical diagnosis of APN, although a substantial number of infants appear to have normal scans. Early determination of the urine NAG/creatinine and albumin/ creatinine quotients may further improve the diagnostics in the infant.
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Affiliation(s)
- T Linné
- Department of Paediatrics, St. Göran's Hospital, Stockholm, Sweden
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22
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Abstract
The antigenic properties of H3N8 influenza viruses isolated from outbreaks of equine influenza in Sweden between 1979 and 1991 have been studied in hemagglutination inhibition tests with polyclonal and monoclonal antisera, and antigenic drift of the virus has been demonstrated. To clarify the basis of the antigenic drift, amino acid sequences of the globular head regions (HA1) of the hemagglutinin membrane glycoproteins of virus strains from 1979, 1984, 1988 and 1990 have been deduced from the nucleotide sequences of the hemagglutinin genes, and the sequence information has been used to construct a phylogenetic tree of H3N8 equine influenza strains. Several strains from previous studies have been included to give a clearer picture of viral evolution in an international context.
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Affiliation(s)
- L Oxburgh
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Uppsala
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23
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Tullus K, Fituri O, Linné T, Escobar-Billing R, Wikstad I, Karlsson A, Burman LG, Wretlind B, Brauner A. Urine interleukin-6 and interleukin-8 in children with acute pyelonephritis, in relation to DMSA scintigraphy in the acute phase and at 1-year follow-up. Pediatr Radiol 1994; 24:513-5. [PMID: 7885789 DOI: 10.1007/bf02015016] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The relationship between urine interleukin-6 (IL-6) and interleukin-8 (IL-8)/creatinine quotients and 99mTc-dimercaptosuccinic acid (DMSA) scintigraphy, performed within 10 days of acute first-time pyelonephritis and after 1 year, was studied in 41 children. The urine IL-6 and IL-8/creatinine quotients were also related to the urine N-acetyl-beta-D-glucosaminidase (NAG) and albumin/creatinine quotients. Presence of DMSA uptake defects, reflecting local inflammation, in children in the acute phase of pyelonephritis, were associated with elevated urine IL-6/creatinine quotients (median 27 pg/mumol); in children without DMSA changes there was no increase in quotients (median non-detectable) (P < 0.05). Persistent DMSA changes at the 1-year follow-up, probably reflecting renal scarring, were only seen in children with increased urine IL-6/creatinine quotients in the acute phase (P < 0.01). No correlation was found between urine IL-8 and DMSA uptake defects. Vesicoureteral reflux (VUR) at 6-8 weeks did not correlate with the urine cytokine levels in the acute phase. The urine excretion of NAG and albumin, reflecting renal dysfunction, was associated with values of both urine IL-6 and IL-8/creatinine quotients, but not with DMSA defects or VUR. Thus, the initial urine IL-6/creatinine quotients might be used as an indicator of risk for persistent renal damage in acute pyelonephritis.
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Affiliation(s)
- K Tullus
- Department of Pediatrics, St. Göran's Children's Hospital, Stockholm, Sweden
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24
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Oxburgh L, Berg M, Klingeborn B, Emmoth E, Linné T. Equine influenza virus from the 1991 Swedish epizootic shows major genetic and antigenic divergence from the prototype virus. Virus Res 1993; 28:263-72. [PMID: 7688488 DOI: 10.1016/0168-1702(93)90026-j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [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
The antigenic properties of H3N8 equine influenza virus from the Swedish epizootic of 1991 differ from those of A/eq 2/Fontainebleau/79 (representative of the Swedish vaccine strain) in hemagglutination inhibition tests. The amino acid sequence of the hemagglutinin (HA) of an isolate from the 1991 outbreak was deduced from the nucleotide sequence and comparison was made to the A/eq 2/Fontainebleau/79 strain. Twenty-three amino acid substitutions were found, 10 mapping onto areas of the HA known to bind antibodies in human H3 influenza viruses. The amino acid changes together with the serological data suggest that a major antigenic drift has taken place in equine H3N8 viruses in Sweden and we conclude that recent strains of the virus must be incorporated into vaccines on a regular basis if epizootics of equine influenza are to be controlled in the future.
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Affiliation(s)
- L Oxburgh
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Uppsala
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25
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Hansson LO, Axelsson G, Linné T, Aurelius E, Lindquist L. Serum C-reactive protein in the differential diagnosis of acute meningitis. Scand J Infect Dis 1993; 25:625-30. [PMID: 8284648 DOI: 10.3109/00365549309008552] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The ability of serum C-reactive protein (S-CRP) to differentiate between acute bacterial and viral meningitis was evaluated in 235 patients, both children and adults. The patients underwent lumbar puncture due to suspected central nervous system (CNS) infection. In patients with bacterial meningitis, 7/60 (12%) had S-CRP concentrations below 50 mg/l. Of these patients, 4 were children below 6 years of age, all with symptoms of meningitis for less than 12 h before admission and 3 adults of whom 1 had symptoms of meningitis for less than 12 h. In patients with viral meningitis, 15/146 (10%) had S-CRP concentrations above 50 mg/l. Only 3 children below 6 years of age with viral meningitis had S-CRP concentration above 20 mg/l, but none exceeded 50 mg/l. An S-CRP value above 50 mg/l in patients with CSF pleocytosis usually indicates bacterial etiology. However, S-CRP values above 50 mg/l may occasionally be seen in viral meningitis. In children younger than 6 years of age a discriminatory level for S-CRP of 20 mg/l can be used to distinguish between bacterial and viral meningitis, but for older patients a discriminatory level of 50 mg/l is more appropriate. If the duration of the illness is less than 12 h, S-CRP concentrations below the discriminatory levels are of limited diagnostic value.
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Affiliation(s)
- L O Hansson
- Department of Clinical Chemistry, Karolinska Hospital, Stockholm, Sweden
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26
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Abstract
Development of glomerular and tubular renal function is delayed in preterm infants. To study the pattern of maturation during infancy and childhood, we re-evaluated renal function in 22 very low birth weight infants--in 14 of the infants at 18 months postconceptional age (9 months corrected age) and in the remaining 8 infants at 8 years of age. The glomerular filtration rate remained lower at 9 months corrected age than in term infants of the same postconceptional age: 82 +/- 23 versus 125 +/- 18 ml/min per 1.73 m2 (p < 0.001). At 8 years of age the glomerular filtration rate did not differ from that of healthy control subjects. Effective renal plasma flow, filtration fraction, albumin excretion, maximal concentrating ability, and kidney size determined by ultrasonography were all normal at 8 years of age. We conclude that renal function, which is markedly reduced during the neonatal period in very low birth weight infants, reaches normal maturity by 8 years of age but not by 9 months corrected age.
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Affiliation(s)
- M Vanpée
- Department of Pediatrics, Karolinska Institute, St. Göran's Children's and Karolinska Hospital, Stockholm, Sweden
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27
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Abstract
Protein and genomic studies of a previously uncharacterized porcine paramyxovirus (designated LPMV) confirmed that it was a member of the paramyxovirus genus. The nucleotide sequences and deduced amino acids of the complete P-gene, M-gene, F-gene and HN-gene as well as the intergenic sequences have been determined. Comparative sequence analysis of the M-gene of LPMV revealed the closest relationship of LPMV was to human mumps virus with a homology of 46% and 55% at the amino acid and nucleotide levels respectively. The P-gene of LPMV is transcribed to V protein mRNA and by editing of the gene to the P protein mRNA. The LPMV P-gene has the coding capacity for an additional protein of 126 amino acids, a C protein.
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Affiliation(s)
- T Linné
- Department of Veterinary Microbiology, Swedish University of Agricultural Science, Uppsala
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28
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Sundqvist A, Berg M, Moreno-López J, Linné T. The haemagglutinin-neuraminidase glycoprotein of the porcine paramyxovirus LPMV: comparison with other paramyxoviruses revealed the closest relationship to simian virus 5 and mumps virus. Arch Virol 1992; 122:331-40. [PMID: 1731697 DOI: 10.1007/bf01317194] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [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: 12/28/2022]
Abstract
The complete nucleotide sequence of the haemagglutinin-neuraminidase (HN) gene of the porcine paramyxovirus LPMV, was determined from cDNA derived from viral genomic RNA. The gene was 1906 nucleotides long including a putative gene end and poly A signal. One long open reading frame was found encoding a protein of 576 amino acids with a calculated molecular weight of 63,324. The protein contains four potential N-glycosylation sites and a major hydrophobic region near the N-terminal, suggesting a membrane anchor domain. Comparison of the deduced amino acid sequence of the LPMV HN protein with that of other paramyxovirus HN proteins, revealed the highest amino acid identity to simian virus 5 of 43% and mumps virus of 41%.
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Affiliation(s)
- A Sundqvist
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Uppsala
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29
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Körner A, Celsi G, Eklöf AC, Linné T, Persson B, Aperia A. Sorbinil does not prevent hyperfiltration, elevated ultrafiltration pressure and albuminuria in streptozotocin-diabetic rats. Diabetologia 1992; 35:414-8. [PMID: 1521721 DOI: 10.1007/bf02342436] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The effects of aldose reductase inhibition on kidney function were studied in rats with streptozotocin-induced diabetes mellitus. Diabetic rats were fed sorbinil (20 and 50 mg/kg) by daily gastric gavage and were compared with untreated diabetic rats and normal rats. The rats were under daily supervision with regard to blood glucose control, insulin administration and body weight. The aim was to promote continuous body growth and to maintain the blood glucose concentration at around 22 mmol/l without large day-to-day fluctuations. The renal functional changes observed in this well-established diabetic model closely resembled those reported in human Type 1 (insulin-dependent) diabetes mellitus. Sorbinil treatment completely prevented renal cortical sorbital accumulation, but did not abolish kidney enlargement or the increase in ultrafiltration pressure and glomerular filtration rate. Albumin excretion was increased to the same extent in the sorbinil-treated and in the untreated diabetic rats. We conclude that increased metabolism of glucose to sorbitol does not cause the hyperfiltration in rats with streptozotocin-induced diabetes.
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Affiliation(s)
- A Körner
- Department of Pediatrics, St. Göran's Children's Hospital, Stockholm, Sweden
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30
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Berg M, Hjertner B, Moreno-López J, Linné T. The P gene of the porcine paramyxovirus LPMV encodes three possible polypeptides P, V and C: the P protein mRNA is edited. J Gen Virol 1992; 73 ( Pt 5):1195-200. [PMID: 1588322 DOI: 10.1099/0022-1317-73-5-1195] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [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: 12/27/2022] Open
Abstract
The nucleotide sequence of the P gene of the porcine paramyxovirus La-Piedad-Michoacan-Mexico virus (LPMV) was analysed. Three long open reading frames (ORFs) were found in the mRNA sense. Insertion of two G residues is necessary to obtain an ORF encoding the P protein, which gives a P protein of 404 amino acids with a calculated Mr of 42475. This form of editing was demonstrated, two non-templated G residues being added in a portion of the mRNA transcripts. The LPMV V protein, which has a conserved cysteine-rich C-terminal region, is encoded by an exact copy of the P gene. The third ORF has the capacity to encode a protein of 126 amino acids, which may resemble the C proteins found in some paramyxoviruses. The ORF starts from an AUG codon down-stream of the first AUG codon of the P/V ORF.
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Affiliation(s)
- M Berg
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Uppsala
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31
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Abstract
Sequence analysis of a region extending between the pVIII and the fiber gene of Canine adenovirus type 1 (Cav-1, Utrecht) and type 2 (Cav-2, Manhattan) was performed. The results revealed a high level of identity between the two viruses when the pVIII gene and the N-terminal part of the fiber gene were compared. The open reading frames of region E3 in of Cav-1 and Cav-2 encoded a 22 kDa and 40.7 kDa polypeptide, respectively. The Cav-1 and Cav-2 E3 region polypeptides shared conserved amino and carboxyl domains. In Cav-2 an extra sequence of about 500 nucleotides was present, appearing like an in frame insertion of foreign DNA. It can be speculated that this insertion in the E3 region contributes to the observed biological differences between Cav-1 and Cav-2.
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Affiliation(s)
- T Linné
- Department of Veterinary Microbiology/Virology, Swedish University of Agricultural Sciences, Uppsala
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32
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Wongwatcharadumrong R, Kunavongkrit A, Neumüller M, Linné T. Comparison of virus isolation, immunofluorescence and DNA probe hybridization for detection of pseudorabies virus in experimentally infected pigs. Zentralbl Veterinarmed B 1992; 39:91-6. [PMID: 1320311 DOI: 10.1111/j.1439-0450.1992.tb01142.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Virus isolation, immunofluorescent staining and DNA probe hybridization, three techniques for the detection of pseudorabies virus (PRV) have been compared in pigs experimentally infected with the Thailand CB-1 strain PRV. The virus isolation and DNA hybridization detection demonstrated a good correlation in detecting infection in live animals by nasal swabbing. In white blood cells an earlier detection was seen with the DNA-hybridization techniques. Consistent results with all the three techniques tested were found in organ materials as nasal mucosa and tonsils as well as in the olfactory bulb.
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Affiliation(s)
- R Wongwatcharadumrong
- Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
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33
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Linné T. Changes in renal function during the development of hypertension and effects of antihypertensive treatment. A case report. Scand J Urol Nephrol 1992; 26:311-4. [PMID: 1439610 DOI: 10.3109/00365599209180891] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Renal function was serially investigated during the development of hypertension in a 12.8-year-old girl with chronic glomerulonephritis. Clearances of inulin (CIn) and para-aminohippuric acid (CPAH), filtration fraction, and sodium excretion were measured during hydropenia and isotonic saline volume expansion. Blood pressure was initially labile, but after a few years fixed hypertension developed, and antihypertensive treatment with propranolol was started. During the early stages of hypertension, the filtration fraction during hydropenia was reduced, but the natriuresis during volume expansion was normal. When the hypertension was fixed, glomerular filtration rate, CPAH, and filtration fraction were normal, but the natriuresis was exaggerated. Antihypertensive treatment only partially corrected the natriuresis.
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Affiliation(s)
- T Linné
- Department of Pediatrics, Karolinska Institute, St. Göran's Hospital, Stockholm, Sweden
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34
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Linné T, Körner A, Rudberg S, Persson B, Aperia A. Renal functional effects of prostaglandin synthesis inhibition in patients with insulin-dependent diabetes mellitus of long duration without nephropathy. Horm Metab Res 1991; 23:383-6. [PMID: 1794842 DOI: 10.1055/s-2007-1003706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The short-term effects of prostaglandin synthesis inhibition (PGSI; single dose 500 mg of naproxen) on renal function were studied in six women (age: 21.9 +/- 2.4 yrs) with insulin dependent diabetes mellitus (IDDM) of 14.3 +/- 2.8 yrs' duration, and in nine age- and sex-matched controls. The diabetics had no overt signs of nephropathy (Albustix neg, normal serum creatinine, and blood pressure). The clearance of inulin (CIn) and PAH; the filtration fraction (FF); and the excretion of Na, albumin and PGE2 were studied under water diuresis on two separate mornings, first without and then with PGSI. With PGSI all individuals has lower PGE2 excretion. The CIn and FF were significantly (p less than 0.05) higher in the diabetics than in the controls both without (129.4 +/- 23.9 ml/min/1.73 m 2 and 23.4 +/- 2.8% vs. 107.6 +/- 10.3 and 19.7 +/- 1.6) and with (133.7 +/- 29.4 and 22.6 +/- 2.1, vs. 106.8 +/- 10.3 and 20.1 +/- 1.5) PGSI. The diuresis and Na excretion were significantly lower with PGSI, than without, in both groups. The albumin excretion was significantly higher in the diabetics under both conditions (29.9 +/- 16.6 and 34.2 +/- 19.9 micrograms/min/100 ml GFR, vs. 14.5 +/- 10.6 and 12.9 +/- 8.3 in controls). We conclude that the hyperfiltration in this stage of IDDM does not appear to be PG dependent, and that PGSI does not give any immediate effects on the albumin excretion.
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Affiliation(s)
- T Linné
- Department of Pediatrics, Karolinska Institute, St. Göran's Hospital, Stockholm, Sweden
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35
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Abstract
The long-term outcome of idiopathic IgA nephropathy (IgAN) in children was investigated with regard to clinical course and biopsy changes. All patients with biopsy-verified IgAN (diagnosed by kidney biopsy 1970-1985) at three children's clinics in Sweden were included in the study. Thirty-four (10 females, 24 males), out of a total of 72 patients, had a follow-up period of 8 years or more (10.7 +/- 1.9 years, range 8-14). After this duration of follow-up, urine abnormalities were found in 47% (group A), proteinuria in 35%, hypertension in 9%, and decreased glomerular filtration rate (GFR) in 3% of patients. However, 53% had no clinical signs of disease (group B). GFR depression at the time of clinical presentation of IgAN was more common in group A than in group B (P = 0.017). At the first renal biopsy, which was performed after the same duration of IgAN in both groups, focal segmental glomerular changes were more often found in group A (P = 0.017), while diffuse proliferative changes were more common in group B (P = 0.031). The course of the IgAN was thus often very protracted, with some children developing hypertension as well as decreased renal function. However, after a period of 8 years or more of follow-up half of the patients did not show any clinical signs of the disease, which may indicate low disease activity or, possibly, recovery.
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Affiliation(s)
- T Linné
- Department of Paediatrics, Karolinska Institute, St. Göran's Hospital, Stockholm, Sweden
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36
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Berg M, Sundqvist A, Moreno-López J, Linné T. Identification of the porcine paramyxovirus LPMV matrix protein gene: comparative sequence analysis with other paramyxoviruses. J Gen Virol 1991; 72 ( Pt 5):1045-50. [PMID: 2033388 DOI: 10.1099/0022-1317-72-5-1045] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [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: 12/29/2022] Open
Abstract
The complete nucleotide sequence of the gene encoding the matrix protein (M) of the porcine paramyxovirus LPMV has been determined. The gene is 1376 nucleotides long including 5' and 3' non-coding sequences with a protein-coding sequence of 1107 nucleotides. The deduced protein, containing 369 amino acids with a calculated Mr of 41,657, is hydrophobic overall with a net positive charge of +17.5. Comparative sequence analysis revealed high amino acid homology to other paramyxovirus M proteins, with the highest degree of identity (46%) with the human mumps virus. This is strong evidence that the porcine paramyxovirus LPMV is a genuine member of the paramyxovirus genus.
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Affiliation(s)
- M Berg
- Department of Veterinary Microbiology (Molecular Virology), Swedish University of Agricultural Sciences, Uppsala
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37
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Abstract
In Sweden Salmonella dublin is the most common serotype within the DO-group isolated from animals. In recent years also salmonella strains belonging to the DO-group but lacking H-antigen have been isolated from cattle in different areas. It was not possible to further differentiate the latter strains by serological methods. However, all Salmonella dublin strains and those strains lacking H-antigen carried a 50 Mdal plasmid exhibiting the same EcoRI and Hind III restriction enzyme digestion pattern. Two of the 26 strains contained an additional 5 Mdal plasmid. Other serotypes within the DO-group investigated, namely Salmonella enteritidis and Salmonella panama, carried plasmids smaller than 50 Mdal. The plasmid profiles and restriction enzyme digestion patterns indicated that the salmonella strains lacking H-antigen were variants of Salmonella dublin. Thus, analysis of plasmid profile and restriction enzyme fingerprinting are useful complements to serological methods in the differentiation of salmonella DO-group strains.
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Affiliation(s)
- A Franklin
- National Veterinary Institute, Uppsala, Sweden
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38
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Lännergren K, Tordai P, Linné T, Persson U. Avoiding splenectomy in the treatment of children with splenic injury. Acta Chir Scand 1990; 156:359-65. [PMID: 2349855] [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] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Ninety-two consecutive patients with traumatic rupture of the spleen were studied. Of the first 46 children (group A), 44 underwent splenectomy. In the subsequent group (group B) non-operative management was successful in 40 of 46 patients, five patients were operated with splenic repair, and one had the spleen removed. All the ruptures were caused by blunt trauma and the severity of the splenic injury was roughly the same in the two groups of patients. A third of the patients in each group had associated injuries, renal injury being the most common intraabdominal lesion. The median hospital stay was 8.0 days (range 5 to 28) in group A and 12.5 days (range 7 to 18) in group B. Among the 40 patients who were treated conservatively, a biphasic course was seen in 23: one or two days after the accident a period of increased pulse rate, fever and increased abdominal tenderness and pain followed, but no evidence for a delayed rupture was found. Our results of conservative treatment of splenic rupture are encouraging and show that non-operative management should be considered in most cases.
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Affiliation(s)
- K Lännergren
- Department of Paediatric Surgery, St. Göran's Children's Hospital, Stockholm, Sweden
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39
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Berg M, Desselberger U, Abusugra IA, Klingeborn B, Linné T. Genetic drift of equine 2 influenza A virus (H3N8), 1963-1988: analysis by oligonucleotide mapping. Vet Microbiol 1990; 22:225-36. [PMID: 2353444 DOI: 10.1016/0378-1135(90)90109-9] [Citation(s) in RCA: 9] [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: 12/31/2022]
Abstract
Comparative analysis by RNA oligonucleotide fingerprints of total genomic RNA as well as the individual RNA segments of equine 2 influenza A virus strains from 1963, 1968, 1979, 1984, 1987 and 1988 revealed genetic diversity. Strains from the epizootic outbreak during 1978-1979 showed minor differences among their genomes. The Swedish isolates from 1979 up to 1988 showed increasing genomic heterogeneity indicating genetic drift.
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Affiliation(s)
- M Berg
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Uppsala
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40
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Berg M, Englund L, Abusugra IA, Klingeborn B, Linné T. Close relationship between mink influenza (H10N4) and concomitantly circulating avian influenza viruses. Arch Virol 1990; 113:61-71. [PMID: 2167060 DOI: 10.1007/bf01318353] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [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: 12/30/2022]
Abstract
Strains of an influenza H10N4 virus have been isolated during an outbreak of a respiratory disease in mink on the south-east coast of Sweden. This was the first example of a disease in mammals caused by the H10 subtype. We compared the A/mink/Sweden/84 strain with two recent avian H10N4 isolates, one from fowl and another from a mallard, both isolated in Great Britain in 1985 as well as the prototype A/chicken/Germany/N/49 (H10N7). The comparison was carried out by genomic analysis of the strains by oligonucleotide fingerprinting and in bioassays on mink. The oligonucleotide fingerprint analysis revealed a high degree of genomic homology of around 98% between the viruses from mink, mallard and fowl. Only the recent avian isolates, that from the mallard and fowl could infect mink by contact, causing similar pathological and clinical signs and inducing seroconversion as did the mink virus. However, the susceptibility of mink to the fowl and mallard viruses by contact was less pronounced than that to the mink virus. Both the genomic homology and the similarities from the infectivity and pathogenicity studies between the mink virus and the recent avian isolates point to a direct invasion of the mink population by an avian H10N4 virus.
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Affiliation(s)
- M Berg
- Department of Veterinary Microbiology, Swedish University of Agricultural Sciences, Biomedicum, Uppsala
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41
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Abstract
The porcine paramyxovirus is a newly identified agent of a fatal disease in piglets, endemic in Mexico since 1980, where it was seen around the town of La Piedad, Michoacan, Mexico (hence LPM virus). At least six [35S]methionine-labelled proteins could be resolved by SDS-PAGE and five of them were clearly immunoprecipitated. Selective labelling of LPMV-infected cells with [3H]glucosamine revealed two bands with an Mr of about 66K and 59K, corresponding to the two viral glycoproteins, the haemagglutinin-neuraminidase protein and the fusion protein. Labelling of virus with [32P]orthophosphate disclosed one band with an Mr of 52K, corresponding to the phosphoprotein. Analysis of nucleocapsids obtained from purified virus or from a permanently infected cell line revealed one major band with an Mr of 68K, the nucleoprotein. Two other proteins were also identified, the large protein and the matrix protein, with apparent Mr of about 200K and 40K, respectively. The protein migration pattern of LPMV was compared, by SDS-PAGE, with that of Newcastle disease virus, bovine parainfluenza 3 virus and Sendai virus. Differences in the Mr of LPMV proteins and the proteins of these paramyxoviruses were observed. We propose that LPMV should be classified as a novel member of the genus Paramyxovirus.
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Affiliation(s)
- A Sundqvist
- Department of Veterinary Microbiology, BMC, Uppsala, Sweden
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Abusugra IA, Linné T, Berg M. Simplified polyacrylamide gel electrophoresis and silver staining for analysis and preparation of influenza virus RNA segments. J Biochem Biophys Methods 1990; 20:207-15. [PMID: 1693156 DOI: 10.1016/0165-022x(90)90079-r] [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] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The influenza virus has a genome consisting of eight RNA segments. A simplified technique to study the RNA segmental pattern by silver staining after gel electrophoresis has been developed. In addition, individual RNA segments could be isolated by a combination of polyacrylamide gel electrophoresis and isotachophoresis.
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Affiliation(s)
- I A Abusugra
- Swedish University of Agricultural Sciences, Faculty of Veterinary Medicine, Uppsala
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Linné T, Agartz I, Sääf J, Wahlund LO. Cerebral abnormalities in Wilson's disease as evaluated by ultra-low-field magnetic resonance imaging and computerized image processing. Magn Reson Imaging 1990; 8:819-24. [PMID: 2266811 DOI: 10.1016/0730-725x(90)90020-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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: 12/31/2022]
Abstract
The cerebral involvement of a 13-yr-old boy with Wilson's disease was serially evaluated during the first 18 mo of D-penicillamine treatment. An ultra-low-field magnetic resonance imaging (ULF MRI) system, operating at 0.02 T, with computerized image processing was used. The half-yr period prior to the clinical diagnosis was set, the patient had showed poor school performance, emotional lability, deteriorating handwriting, progressively slow, gross, and fine motor functions, and a fixed rigid smile. No overt signs of liver disease were found. With D-penicillamine treatment (1-1.5 g/d) a continuous improvement was seen. The pretreatment MRI investigation showed pronounced pathological transformation in the basal ganglia. However, changes were seen also in most other parts of the brain indicating diffuse involvement. During treatment the computerized MR images became gradually more normal. The current magnetic resonance imaging system with computerized image processing is a sensitive and simple method for evaluation of subtle parenchymal changes of the brain.
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Affiliation(s)
- T Linné
- Department of Pediatrics, Karolinska Institute, St. Göran's Hospital, Stockholm, Sweden
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45
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Abstract
The genome of the swine influenza H1N1 virus Sweden/83 was compared to other H1N1 viruses by oligonucleotide fingerprinting. This analysis revealed that Sweden/83 is identical to the Danish strain Sjaelland/82 and is thus to be placed in the group of "US viruses". On the other hand, the Danish strain Als/82 was found to be different, i.e., related to the Belgium/79 strain which is a representative of the "European viruses". The results of the present genomic analysis confirm the previous findings of relationships between the above strains.
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46
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Abstract
The glycoprotein gp51 of bovine leukaemia virus (BLV) has been included in an immunostimulating complex (ISCOM). The ISCOM was characterized biochemically in SDS-polyacrylamide gel electrophoresis showing the presence of proteins of estimated molecular weights of 50 and 30 kDa. Immunoblotting showed that gp51 was present in the ISCOM. The BLV-ISCOM had a S-value of 19 S and the electronmicrograph showed the cage-like structure as previously reported for other ISCOMs. About 17% of the total amount of gp51 in the cell culture fluid was recovered in the ISCOMs. The largest loss of gp51 was encountered during the sedimentation of the virus. An ELISA, utilizing monoclonal antibodies to defined epitopes for capture was developed to control the antigenicity of epitopes, e.g. those known to induce neutralizing antibodies. Using this device as a quality control for epitopes the following could be stated. First, ISCOMs prepared from virus solubilized with the non-ionic detergents Triton X-100 or MEGA did not react with neutralizing monoclonal antibodies. In contrast, ISCOMs prepared from virus solubilized with the non-ionic detergents Tween-20, Tween-80 or octyl glucoside did react with the neutralizing antibodies. Second, the neutralizing epitopes were better exposed in ISCOMs than the other epitopes of gp51. In a preliminary experiment it was shown that gp51 in ISCOMs was highly immunogenic.
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Affiliation(s)
- M S Merza
- Department of Veterinary Microbiology, Section of Virology, Uppsala, Sweden
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47
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Lindquist L, Linné T, Hansson LO, Kalin M, Axelsson G. Value of cerebrospinal fluid analysis in the differential diagnosis of meningitis: a study in 710 patients with suspected central nervous system infection. Eur J Clin Microbiol Infect Dis 1988; 7:374-80. [PMID: 3137038 DOI: 10.1007/bf01962340] [Citation(s) in RCA: 68] [Impact Index Per Article: 1.9] [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: 01/04/2023]
Abstract
A prospective study to determine the value of cerebrospinal fluid analysis in the differential diagnosis of meningitis was performed in 710 consecutively observed patients, both children and adults, who underwent lumbar puncture due to suspected central nervous system infection. Diagnoses included acute or presumed bacterial meningitis (n = 79), acute or presumed viral meningoencephalitis (n = 218), acute unclassified meningitis (n = 6), other infections of the central nervous system (n = 37), non-infectious neurological diseases (n = 76) and control patients (n = 294). The sensitivity, specificity and predictive values were determined for cerebrospinal fluid white blood cell count, total protein, lactate, glucose and C-reactive protein levels as well as the blood/cerebrospinal fluid glucose ratio. Determination of cerebrospinal fluid levels of lactate (greater than or equal to 3.5 mmol/l) was found to be superior to the other tests. The C-reactive protein level gave no additional diagnostic information when the lactate level was determined. The white blood cell count, and total protein and glucose levels were often unreliable tools for differential diagnosis, largely due to low sensitivity at realistic discriminatory limits. The study confirms that no cerebrospinal fluid test is fully reliable in distinguishing bacterial meningitis from other forms of meningitis.
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Affiliation(s)
- L Lindquist
- Department of Infectious Diseases, Roslagstull Hospital, Stockholm, Sweden
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Belák S, Linné T, Magyar G, Harrach B, Benkö M, Klingeborn B, Klintevall K, Bartha A. Bovine herpesvirus 1: rapid diagnosis of infection by direct filter hybridization. Mol Cell Probes 1988; 2:147-56. [PMID: 2845258 DOI: 10.1016/0890-8508(88)90036-9] [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: 01/02/2023]
Abstract
Direct filter hybridization (DFH) was applied as a simple method of nucleic acid hybridization to diagnose bovine herpesvirus 1 (BHV-1) infection without previous purification of nucleic acids from the specimens. The DNA of BHV-1 was cleaved with the restriction endonuclease Pst I and randomly cloned into pKH47 plasmids. The clones were labelled with 32P or biotin and selected on uninfected and infected cells for the highest specific activity to detect BHV-1 infection. Two clones, which detected about 10 infected cells, were selected for the diagnosis of BHV-1 in cattle. On specimens collected during experimental and natural disease, the DFH showed to be in concordance with the standard method of virus isolation. This simple hybridization technique proved to be a sensitive and rapid alternative to virus isolation. Specific diagnosis of BHV-1 infection can be made even in simply equipped laboratories within 10 h.
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Affiliation(s)
- S Belák
- Department of Virology, National Veterinary Institute, Uppsala, Sweden
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49
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Belák S, Linné T. Rapid detection of Aujeszky's disease (pseudorabies) virus infection of pigs by direct filter hybridisation of nasal and tonsillar specimens. Res Vet Sci 1988; 44:303-8. [PMID: 2841732] [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: 01/02/2023]
Abstract
A direct filter hybridisation method has been developed to diagnose acute Aujeszky's disease in live pigs. The advantages of the method are easy, fast sample processing; no DNA-purification is needed, and the hybridisation itself is simplified. The direct filter hybridisation method has been tested on pseudorabies virus infected cultured cells, experimentally infected pigs and on specimens from an outbreak of Aujeszky's disease. Virus isolation and filter hybridisation gave comparable results, indicating that the direct filter hybridisation method is a good tool for rapid diagnosis. It is independent of cell culture facilities and the disease can be diagnosed in live animals within 15 hours.
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Affiliation(s)
- S Belák
- Department of Virology, National Veterinary Institute, Uppsala, Sweden
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50
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Linné T, Huldt G, Finkel Y, Jönsson-Styburski U. [Acquired toxoplasmosis is often mild but the symptoms can be difficult to interpret]. Lakartidningen 1988; 85:948-9. [PMID: 3352382] [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: 01/05/2023]
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