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  • 1
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 1981
    In:  Archives of Virology Vol. 69, No. 1 ( 1981-3), p. 91-94
    In: Archives of Virology, Springer Science and Business Media LLC, Vol. 69, No. 1 ( 1981-3), p. 91-94
    Type of Medium: Online Resource
    ISSN: 0304-8608 , 1432-8798
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 1981
    detail.hit.zdb_id: 1458460-8
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    American Society for Microbiology ; 1995
    In:  Journal of Virology Vol. 69, No. 6 ( 1995-06), p. 3529-3537
    In: Journal of Virology, American Society for Microbiology, Vol. 69, No. 6 ( 1995-06), p. 3529-3537
    Abstract: Besides its role in viral assembly, the vesicular stomatitis virus (VSV) matrix (M) protein causes cytopathic effects such as cell rounding (D. Blondel, G. G. Harmison, and M. Schubert, J. Virol. 64:1716-1725, 1990). DNA cotransfection assays demonstrated that VSV M protein was able to inhibit the transcription of a reporter gene (B. L. Black and D. S. Lyles, J. Virol. 66:4058-4064, 1992). We have confirmed these observations by using cotransfections with an infectious clone of human immunodeficiency virus type 1 (HIV-1) and found that the amino-terminal 32 amino acids of M protein which are essential for viral assembly were not required for this inhibition. For the study of the potential role of M protein in the shutoff of transcription from chromosomal DNA, we have isolated stable HeLa T4 cell lines which encode either a wild-type or a temperature-sensitive (ts) VSV M gene under control of the HIV-1 long terminal repeat promoter. Transcription of the M mRNA was transactivated after HIV-1 infections. A cell line which encodes the wild-type M protein was nonpermissive for either HIV-1 or HIV-2. A cell line that encodes the ts M gene was transfected with the infectious HIV-1 DNA or was infected with HIV-1 or HIV-2. In all cases, at 32 degrees C, the permissive temperature for M protein, the cells were nonpermissive for HIV replication. At 40 degrees C, the ts M protein was nonfunctional and both HIV-1 and HIV-2 were able to replicate at high levels. A comparison of the amounts of proviral HIV-1 DNAs and HIV-1 mRNAs at 10 and 36 h after HIV-1 infection demonstrated that proviral insertion had not been prevented by M protein and that the block in HIV-1 replication was at the level of proviral expression. The severe reduction of HIV-1 proviral transcripts demonstrates that the VSV M protein alone can inhibit expression from chromosomal DNA. These results strongly support the hypothesis that the VSV M protein is involved in the shutoff of host cell transcription. M protein was able to attenuate HIV-1 infections and protect the cell population from HIV-1 pathogenesis. The temperature-dependent switch from a persistent to a lytic HIV-1 infection in the presence of ts M protein could be useful for studies of HIV-1 replication and pathogenesis.
    Type of Medium: Online Resource
    ISSN: 0022-538X , 1098-5514
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 1995
    detail.hit.zdb_id: 1495529-5
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  • 3
    Online Resource
    Online Resource
    Wiley ; 1980
    In:  Journal of Food Science Vol. 45, No. 6 ( 1980-09), p. 1601-1602
    In: Journal of Food Science, Wiley, Vol. 45, No. 6 ( 1980-09), p. 1601-1602
    Type of Medium: Online Resource
    ISSN: 0022-1147 , 1750-3841
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 1980
    detail.hit.zdb_id: 2006705-7
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  • 4
    Online Resource
    Online Resource
    JSTOR ; 1965
    In:  Journal of the American Oriental Society Vol. 85, No. 4 ( 1965-10), p. 599-
    In: Journal of the American Oriental Society, JSTOR, Vol. 85, No. 4 ( 1965-10), p. 599-
    Type of Medium: Online Resource
    ISSN: 0003-0279
    RVK:
    RVK:
    Language: Unknown
    Publisher: JSTOR
    Publication Date: 1965
    detail.hit.zdb_id: 2065887-4
    SSG: 6,24
    SSG: 1
    SSG: 6,23
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  • 5
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2012
    In:  Molecular Biotechnology Vol. 51, No. 1 ( 2012-5), p. 27-36
    In: Molecular Biotechnology, Springer Science and Business Media LLC, Vol. 51, No. 1 ( 2012-5), p. 27-36
    Type of Medium: Online Resource
    ISSN: 1073-6085 , 1559-0305
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2012
    detail.hit.zdb_id: 2073594-7
    SSG: 12
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  • 6
    In: Current HIV Research, Bentham Science Publishers Ltd., Vol. 19, No. 2 ( 2021-02-26), p. 172-187
    Abstract: HIV-1 Nef is an important accessory protein with multiple effector functions. Genetic studies of the HIV-1 Nef gene show extensive genetic diversity and the functional studies have been carried out mostly with Nef derived from regions dominated by subtype B (North America & Europe). Objective: This study was carried out to characterize genetic variations of the Nef gene from HIV-1 infected individuals from North India and to find out their functional implications. Methods: The unique representative variants were sub-cloned in a eukaryotic expression vector and further characterized with respect to their ability to downregulate cell surface expression of CD4 and MHC-1 molecules. Results: The phylogenetic analysis of Nef variants revealed sequence similarity with either consensus subtype B or B/C recombinants. Boot scan analysis of some of our variants showed homology to B/C recombinant and some to wild type Nef B. Extensive variations were observed in most of the variants. The dN/dS ratio revealed 80% purifying selection and 20% diversifying selection implying the importance of mutations in Nef variants. Intracellular stability of Nef variants differed greatly when compared with wild type Nef B and C. There were some variants that possessed mutations in the functional domains of Nef and responsible for its differential CD4 and MHC-1 downregulation activity. Conclusion: We observed enhanced biological activities in some of the variants, perhaps arising from amino acid substitutions in their functional domains. The CD4 and MHC-1 down-regulation activity of Nef is likely to confer immense survival advantage allowing the most rare genotype in a population to become the most abundant after a single selection event.
    Type of Medium: Online Resource
    ISSN: 1570-162X
    Language: English
    Publisher: Bentham Science Publishers Ltd.
    Publication Date: 2021
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  • 7
    In: Journal of Microencapsulation, Informa UK Limited, Vol. 7, No. 3 ( 1990-01), p. 385-395
    Type of Medium: Online Resource
    ISSN: 0265-2048 , 1464-5246
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 1990
    detail.hit.zdb_id: 1491079-2
    SSG: 12
    SSG: 15,3
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  • 8
    In: British Journal of Surgery, Oxford University Press (OUP), Vol. 109, No. 11 ( 2022-10-14), p. 1073-1080
    Abstract: Colorectal cancer often presents with obstruction needing urgent, potentially life-saving decompression. The comparative efficacy and safety of endoluminal stenting versus emergency surgery as initial treatment for such patients is uncertain. Methods Patients with left-sided colonic obstruction and radiological features of carcinoma were randomized to endoluminal stenting using a combined endoscopic/fluoroscopic technique followed by elective surgery 1–4 weeks later, or surgical decompression with or without tumour resection. Treatment allocation was via a central randomization service using a minimization procedure stratified by curative intent, primary tumour site, and severity score (Acute Physiology And Chronic Health Evaluation). Co-primary outcome measures were duration of hospital stay and 30-day mortality. Secondary outcomes were stoma formation, stenting completion and complication rates, perioperative morbidity, 6-month survival, 3-year recurrence, resource use, adherence to chemotherapy, and quality of life. Analyses were undertaken by intention to treat. Results Between 23 April 2009 and 22 December 2014, 245 patients from 39 hospitals were randomized. Stenting was attempted in 119 of 123 allocated patients (96.7 per cent), achieving relief of obstruction in 98 of 119 (82.4 per cent). For the 89 per cent treated with curative intent, there were no significant differences in 30-day postoperative mortality (3.6 per cent (4 of 110) versus 5.6 per cent (6 of 107); P = 0.48), or duration of hospital stay (median 19 (i.q.r. 11–34) versus 18 (10–28) days; P = 0.94) between stenting followed by delayed elective surgery and emergency surgery. Among patients undergoing potentially curative treatment, stoma formation occurred less frequently in those allocated to stenting than those allocated to immediate surgery (47 of 99 (47.5 per cent) versus 72 of 106 (67.9 per cent); P = 0.003). There were no significant differences in perioperative morbidity, critical care use, quality of life, 3-year recurrence or mortality between treatment groups. Conclusion Stenting as a bridge to surgery reduces stoma formation without detrimental effects. Registration number: ISRCTN13846816 (http://www.controlled-trials.com).
    Type of Medium: Online Resource
    ISSN: 0007-1323 , 1365-2168
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2006309-X
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  • 9
    In: British Journal of Surgery, Oxford University Press (OUP), Vol. 104, No. 3 ( 2017-02-03), p. 214-221
    Abstract: Treatment of preoperative anaemia is recommended as part of patient blood management, aiming to minimize perioperative allogeneic red blood cell transfusion. No clear evidence exists outlining which treatment modality should be used in patients with colorectal cancer. The study aimed to compare the efficacy of preoperative intravenous and oral iron in reducing blood transfusion use in anaemic patients undergoing elective colorectal cancer surgery. Methods Anaemic patients with non-metastatic colorectal adenocarcinoma were recruited at least 2 weeks before surgery and randomized to receive oral (ferrous sulphate) or intravenous (ferric carboxymaltose) iron. Perioperative changes in haemoglobin, ferritin, transferrin saturation and blood transfusion use were recorded until postoperative outpatient review. Results Some 116 patients were included in the study. There was no difference in blood transfusion use from recruitment to trial completion in terms of either volume of blood administered (P = 0·841) or number of patients transfused (P = 0·470). Despite this, increases in haemoglobin after treatment were higher with intravenous iron (median 1·55 (i.q.r. 0·93–2·58) versus 0·50 (−0·13 to 1·33) g/dl; P & lt; 0·001), which was associated with fewer anaemic patients at the time of surgery (75 versus 90 per cent; P = 0·048). Haemoglobin levels were thus higher at surgery after treatment with intravenous than with oral iron (mean 11·9 (95 per cent c.i. 11·5 to 12·3) versus 11·0 (10·6 to 11·4) g/dl respectively; P = 0·002), as were ferritin (P & lt; 0·001) and transferrin saturation (P & lt; 0·001) levels. Conclusion Intravenous iron did not reduce the blood transfusion requirement but was more effective than oral iron at treating preoperative anaemia and iron deficiency in patients undergoing colorectal cancer surgery.
    Type of Medium: Online Resource
    ISSN: 0007-1323 , 1365-2168
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2017
    detail.hit.zdb_id: 2006309-X
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  • 10
    In: BJS Open, Oxford University Press (OUP), Vol. 7, No. 1 ( 2023-01-06)
    Abstract: Acutely symptomatic abdominal wall and groin hernias (ASH) are a common acute surgical presentation. There are limited data to guide decisions related to surgical repair technique and use of antibiotics, which can be driven by increased risk of surgical site infection (SSI) in this group. This study aims to report rates of SSI following ASH repair and explore the use of patient-reported outcome measure reporting in this setting. Methods An 18-week, UK-based, multicentre prospective cohort study (NCT04197271) recruited adults with ASH. This study reports operatively managed patients. Data on patient characteristics, inpatient management, quality of life, complications, and wound healing (Bluebelle score) were collected. Descriptive analyses were performed to estimate event rates of SSI and regression analysis explored the relationship between Bluebelle scores and SSI. The 30 and 90-day follow-up visits assessed complications and quality of life. Results The MASH study recruited 273 patients, of whom 218 were eligible for this study, 87.2 per cent who underwent open repair. Mesh was used in 123 patients (50.8 per cent). Pre- and postoperative antibiotics were given in 163 (67.4 per cent) and 28 (11.5 per cent) patients respectively. There were 26 reported SSIs (11.9 per cent). Increased BMI, incisional, femoral, and umbilical hernia were associated with higher rates of SSI (P = 0.006). In 238 patients, there was a difference in healthy utility values at 90 days between patients with and without SSI (P = 0.025). Also, when analysing 191 patients with Bluebelle scores, those who developed an SSI had higher Bluebelle values (P & lt; 0.001). Conclusion SSI is frequent in repair of acutely symptomatic hernia and correlates with BMI and site of hernia.
    Type of Medium: Online Resource
    ISSN: 2474-9842
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 2902033-5
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