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Kulshreshtha SK, Raj P. Anisotropic hyperfine fields in FeSn by Mossbauer spectroscopy. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0305-4608/11/1/029] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kulshreshtha SK, Raj P. 57Fe Mossbauer studies of the (Fe1-x)Sn system for 0⩽x⩽0.2:estimation of the anisotropy of the hyperfine coupling tensor. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0305-4608/12/2/014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Raj P, Stansbie JM, Phelps PD. Minimising radiation dose to the lens in axial computed tomography of the temporal. REVUE DE LARYNGOLOGIE - OTOLOGIE - RHINOLOGIE 2000; 121:83-5. [PMID: 10997064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
In this study, 25 randomly selected CT scans of temporal bones performed in a busy radiology department were retrospectively analysed with particular attention paid to the number of sections passing through the orbits. Thirteen examinations were found to include sections through the eyes, thereby resulting in unnecessary radiation to the lens. The importance of proper scanning technique is therefore emphasised. The mean radiation dose to the eyes in axial CT examination of the temporal bones was determined by the use of thermoluminescent dosimeters taped to the eyelids. The authors concluded that appropriate scanning techniques can reduce the radiation dose to the orbit whilst imaging the temporal bone. All the relevant information can usually be obtained without any of the sections passing through the lens. The radiation dose to the lens was increased when additional sections were performed to obtain information about the jugular fossa.
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McDermott A, Raj P, Glaholm J, Pearman K, Macnamara M. De novo laryngeal carcinoma in childhood. J Laryngol Otol 2000; 114:293-5. [PMID: 10845048 DOI: 10.1258/0022215001905382] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Numerous factors contribute towards a late diagnosis of laryngeal malignancy in childhood. These include its rarity, the similarity of its early symptoms to those of other benign, common childhood conditions as well as the relative difficulty encountered during paediatric laryngeal examination. We believe that these cases are of sufficient interest when they occur to warrant reporting since the consequences of late diagnosis in these young patients can be serious. We present a case of an 11-year-old boy with advanced squamous cell carcinoma of the larynx (T3N0M0), who was successfully treated with primary total laryngectomy and bilateral selective neck dissections to avoid the potential additional morbidity of radical radiotherapy.
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Raj P, Stableforth DE, Morgan DW. A prospective study of nasal disease in adult cystic fibrosis. J Laryngol Otol 2000; 114:260-3. [PMID: 10845039 DOI: 10.1258/0022215001905517] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Twenty-six adult cystic fibrosis patients were studied to compare nasal disease with their laboratory correlates including skin testing, immunoglobulin and Aspergillus fumigatus precipitin levels, saccharin testing and sputum cultures. Six patients were asymptomatic and all of these had negative skin tests, normal IgE levels and negative Aspergillus fumigatus precipitins. Thirteen patients had rhinitis, 12 had positive skin-testing for common allergens, 10 elevated IgE levels and nine positive Aspergillus fumigatus precipitins. Seven patients had polyps, all had normal IgE levels and negative Aspergillus fumigatus precipitins, six had positive skin testing for common allergens. There also appeared to be a relationship between Pseudomonas spp. colonization and positive skin testing.
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Mesenas SJ, Ng KY, Raj P, Ho JM, Ng HS. Primary leiomyoma of the liver. Singapore Med J 2000; 41:129-31. [PMID: 11063198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
This case report describes a primary hepatic leiomyoma presenting as a mass lesion detected on ultrasonography of the abdomen in an asymptomatic hepatitis B carrier on routine surveillance. Primary leiomyomata of the liver are rare occurrences, with only 9 cases reported in the literature. The presenting features of primary hepatic leiomyomata and diagnostic approach towards such lesions are discussed. The significance of such tumours in the immunocompromised is also mentioned.
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Raj P, Mohanradja D, Siddiq MA, Stansbie JM. Nasal non-Hodgkin's lymphoma causing mucocele of the maxillary antrum. J Laryngol Otol 2000; 114:158-9. [PMID: 10748840 DOI: 10.1258/0022215001904978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The authors report a case of an antral mucocele secondary to obstruction of the antral ostium by a non-Hodgkin's lymphoma. Antral mucoceles are rare, and this is the first report of one such caused by a nasal lymphoma.
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Abstract
Haemophilic pseudotumour or haemophilic cyst is a rare complication of haemophilia, occurring in one to two per cent of individuals with a severe factor VIII or IX deficiency. We report a case of a haemophilic pseudotumour in a hitherto unreported site, the bony nasal pyramid, and believe this case is also unique on account of it having occurred in a patient with mild haemophilia. The diagnosis and treatment of this rare condition is also reviewed.
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Heavner JE, Racz GB, Raj P. Percutaneous epidural neuroplasty: prospective evaluation of 0.9% NaCl versus 10% NaCl with or without hyaluronidase. Reg Anesth Pain Med 1999; 24:202-7. [PMID: 10338168 DOI: 10.1016/s1098-7339(99)90128-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND AND OBJECTIVES Percutaneous epidural neuroplasty (epidural neurolysis, lysis of epidural adhesions) is an interventional pain management technique that has emerged over approximately the last 10 years as part of a multidisciplinary approach to treating radiculopathy with low back pain. In addition to local anesthetic and corticosteroid, hypertonic saline (10% NaCl) and hyaluronidase are used for the technique. The objective of this study was to determine if hypertonic saline or hyaluronidase influenced treatment outcomes. METHODS Eighty-three subjects with radiculopathy plus low back pain were assigned to one of four epidural neuroplasty treatment groups: (a) hypertonic saline plus hyaluronidase, (b) hypertonic saline, (b) isotonic saline (0.9% NaCl), or (d) isotonic saline plus hyaluronidase. Subjects in all treatment groups received epidural corticosteroid and local anesthetic. RESULTS Twenty-four subjects did not complete the study. Most of the other 59 subjects receiving any of the four treatments as part of their pain management obtained significant relief immediately after treatment. Visual analog scale (VAS) scores for the area of maximal pain (VASmax; back or leg) were reduced in 25% or more of subjects in all treatment groups at all post-treatment follow-up times (1, 3, 6, 9, and 12 months). A smaller fraction of subjects treated with hypertonic saline or hyaluronidase and hypertonic saline required more additional treatments than did subjects receiving the other treatments. CONCLUSIONS Percutaneous epidural neuroplasty, as part of an overall pain management strategy, reduces pain (sometimes for over one year) in 25% or more of subjects with radiculopathy plus low back pain refractory to conventional therapies. The use of hypertonic saline may reduce the number of patients that require additional treatments.
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Stanton-Hicks M, Baron R, Boas R, Gordh T, Harden N, Hendler N, Koltzenburg M, Raj P, Wilder R. Complex Regional Pain Syndromes: guidelines for therapy. Clin J Pain 1998; 14:155-66. [PMID: 9647459 DOI: 10.1097/00002508-199806000-00012] [Citation(s) in RCA: 270] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This report aims to present an orderly approach to the treatment of Chronic Regional Pain Syndrome (CRPS) types I and II through an algorithm. The central theme is functional restoration: a coordinated but progressive approach that introduces each of the treatment modalities needed to achieve both remission and rehabilitation. Reaching objective and measurable rehabilitation goals is an essential element. Specific exercise therapy to reestablish function after musculoskeletal injury is central to this functional restoration. Its application to CRPS is more contingent on varying rates of progress that characterize the restoration of function in patients with CRPS. Also, the various modalities that may be used, including analgesia by pharmacologic means or regional anesthesia or the use of neuromodulation, behavioral management, and the qualitatively different approaches that are unique to the management of children with CRPS, are provided only to facilitate functional improvement in a stepwise but methodical manner. Patients with CRPS need an individual approach that requires extreme flexibility. This distinguishes the management of these conditions from other well-described medical conditions having a known pathophysiology. In particular, the special biopsychosocial factors that are critical to achieving a successful outcome are emphasized. This algorithm is a departure from the contemporary heterogeneous approach to treatment of patients with CRPS. The underlying principles are motivation, mobilization, and desensitization facilitated by the relief of pain and the use of pharmacologic and interventional procedures to treat specific signs and symptoms. Self-management techniques are emphasized, and functional rehabilitation is the key to the success of this algorithm.
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Raj P, Vella EJ, Bickerton RC. Successful treatment of rhinocerebral mucormycosis by a combination of aggressive surgical debridement and the use of systemic liposomal amphotericin B and local therapy with nebulized amphotericin--a case report. J Laryngol Otol 1998; 112:367-70. [PMID: 9659500 DOI: 10.1017/s0022215100140484] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A case of mucormycosis involving the nose and paranasal sinuses in a 55-year-old man with recently diagnosed acute promyelocytic leukaemia is reported. It was successfully treated with a combination of aggressive surgical debridement and systemic amphotericin B. In addition, local nebulized amphotericin B was used as an adjunct to therapy. We believe this is only the second documented use of nebulized amphotericin in the management of sinonasal mucormycosis. The need for a high index of suspicion and early aggressive management is emphasized.
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Davis C, Neill S, Raj P. Microwave fixation of rabies specimens for fluorescent antibody testing. J Virol Methods 1997; 68:177-82. [PMID: 9389407 DOI: 10.1016/s0166-0934(97)00124-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
An adaptation of the conventional procedure for fixation of brain impressions prior to rabies testing was developed using a microwave oven to fix slides in less than 1 min. A total of 2394 routine specimens were examined to evaluate the efficacy of microwave fixation of brain impressions as an aid to shortening the turnaround time for reporting. Slides were fixed for 55-60 s in a standard household microwave oven at 50%, power using phosphate buffered saline supplemented with 3% Tween 20 as a fixative medium. They were then stained using the standard rabies immunofluorescent staining procedure with minor modifications. This process potentially could allow results to be reported to submitters within 1.5 h after specimens arrive in the laboratory. Microwave fixation was in complete agreement with conventional acetone fixation for detection of positive rabies specimens.
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Raj P. Molecular diagnosis of infectious diseases. Indian J Pediatr 1997; 64:435-40. [PMID: 10771870 DOI: 10.1007/bf02737744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The Polymerase Chain Reaction (PCR) is a revolutionary new means of amplifying, i.e., replicating, selected DNA sequences in vitro. This procedure is highly sensitive and rapid, requiring few hours for detection of amplified target DNA whereas it often takes several weeks for the identification of many fastidious organisms by culture. Studies have shown that as few as one microorganism can be detected by PCR. Therefore, it is revolutionizing our ability in the diagnosis of infectious diseases. Currently, this technique is very expensive and complex which will probably restrict its immediate role for diagnosing infections where the causative organism is impossible to culture or untypeable by conventional means. As further progress occurs, however, this powerful technique will be applied as a major new tool to diagnose infections and to the study of individual genome variations.
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Siddiqui RA, Raj P, Saxena AK, Dixit SK. Preparation and Structural Characterisation of Triaryl Metal(V) Complexes (M = As, Sb) of Tri-and Tetradentate Schiff Bases. ACTA ACUST UNITED AC 1996. [DOI: 10.1080/00945719608004361] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Salunke HG, Das GP, Raj P, Shashikala K, Sathyamoorthy A, Dhar SK. Electronic-structure effects in the suppression of superconductivity in hydrogenated Zr2Rh. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:12299-12303. [PMID: 9982860 DOI: 10.1103/physrevb.53.12299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yusuf SM, Rao LM, Raj P. Low-temperature magnetic phase of UCu2Ge2: A macroscopic, mesoscopic, and microscopic study. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:28-31. [PMID: 9981932 DOI: 10.1103/physrevb.53.28] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Schmidt JS, Maier D, Raj P, Remine SG. Laparoscopic management of appendiceal intussusception associated with villous adenocarcinoma. JOURNAL OF LAPAROENDOSCOPIC SURGERY 1994; 4:369-73. [PMID: 7833525 DOI: 10.1089/lps.1994.4.369] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The authors present a case of appendiceal intussusception, a rare finding that can be associated with appendiceal neoplasms. A 74-year-old woman with right lower quadrant abdominal pain was found to have an appendiceal intussusception associated with a villous adenocarcinoma and was managed with a laparoscopic assisted right hemicolectomy. This case is presented along with a review of the symptoms, diagnosis, classification, and appropriate management of this entity via laparoscopy.
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Raj P, Greco AD. Cystic duct stabilization during laparoscopic exploration and stone removal. JOURNAL OF LAPAROENDOSCOPIC SURGERY 1994; 4:149-151. [PMID: 8043924 DOI: 10.1089/lps.1994.4.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A modification of the standard method for cystic duct stabilization is presented. A percutaneously placed suture is used to loop and stabilize the cystic duct. The suture is secured outside the abdominal wall at the skin level using a clamp. Percutaneous suture stabilization of the cystic duct provides an alternative method of common bile duct stabilization when laparoscopic choledochotomy is required. By using this method, we can easily stabilize the cystic duct without the need for additional trocars and simplify the use of the choledochoscope.
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Raj P, Husain I, Singhal K. Synthesis and biological studies on some organo-tin and lead halo and mixed halo-pseudohalo anionic complexes. ARZNEIMITTEL-FORSCHUNG 1994; 44:178-81. [PMID: 8147952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Some new anionic complexes of organo-tin(IV) and lead (IV) isolated in combination of tetraorgano-ammonium phosphonium and stibonium cation(s). L[R4-nMXnY] and L2[R2MX2Y2], where R = C2H5, C4H9 or C6H5; M = Sn or Pb; X = Y = Cl = Br, I, N3, NCS; n = 1, 2 and L = R4M1 (M1 = N, P, Sb), whose structures were confirmed by correct elemental analyses, molar conductance values, van't Hoff factor and IR spectral studies, were synthesized and evaluated for anti-convulsant activity in vivo and antiviral and antibacterial activity in vitro. A few of them exhibited promising activity. In addition, the toxicity (ALD50) and effects on the central nervous system of these complexes have been studied in mice.
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Matson DO, O'Ryan ML, Pickering LK, Chiba S, Nakata S, Raj P, Estes MK. Characterization of serum antibody responses to natural rotavirus infections in children by VP7-specific epitope-blocking assays. J Clin Microbiol 1992; 30:1056-61. [PMID: 1374761 PMCID: PMC265223 DOI: 10.1128/jcm.30.5.1056-1061.1992] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Knowledge of the immune response to rotavirus is crucial for vaccine development. We compared an epitope-blocking assay (EBA) that uses VP7-specific monoclonal antibodies with neutralization assays (NAs) with polyclonal antisera for detecting serum antibody responses after natural rotavirus infection in children. Twenty-six serum pairs from children living in an orphanage with and without symptoms during two rotavirus outbreaks were evaluated for VP7 type 1-, 2-, 3-, and 4-specific antibody responses. In the first outbreak, which was caused by a VP7 type 3 strain, homotypic antibody responses were detected in 11 of 11 symptomatic children by NA and in 10 of 11 symptomatic children by EBA. Heterotypic antibody responses were detected more frequently (12 of 15 children) by NA than by EBA, and the heterotypic epitope-blocking antibody responses occurred in children older than 14 months of age. Antibody responses in asymptomatic children were more commonly detected by EBA than by NA. EBA results from the sera of children in the second outbreak indicated that it was caused by VP7 type 4, whereas NA results suggested it was caused by VP7 type 3. Our results confirm that EBA is a sensitive and specific method for determining VP7 type-specific immune responses after natural rotavirus infections.
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Raj P, Matson DO, Coulson BS, Bishop RF, Taniguchi K, Urasawa S, Greenberg HB, Estes MK. Comparisons of rotavirus VP7-typing monoclonal antibodies by competition binding assay. J Clin Microbiol 1992; 30:704-11. [PMID: 1372622 PMCID: PMC265136 DOI: 10.1128/jcm.30.3.704-711.1992] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Three sets of neutralizing monoclonal antibodies (MAbs) used to type the outer capsid protein VP7 of four group A rotavirus serotypes (1 through 4) were compared in competition immunoassays. Reciprocal competition was observed for each of the VP7 type 2-, 3-, and 4-specific MAbs. The VP7 type 1 MAbs exhibited variable competition patterns with other VP7 type 1 MAbs. MAb RV4:3, which has been used to recognize antigenic variants within VP7 type 1 strains, showed reciprocal competition with the four VP7 type 3 MAbs (RV3:1, YO-1E2, 4F8, and 159) using a VP7 type 3 virus (SA11) as antigen. MAb 2C9, also prepared against VP7 type 1, reacted with VP7 type 3 strains and competed with a VP7 type 3 MAb, 159, using RRV as antigen. Use of the different sets of VP7 type-specific MAbs in the enzyme-linked immunosorbent assay permitted the recognition of six antigenic variants within VP7 types 1, 2, and 3 among specimens whose VP7 type could not be determined previously with only one set of typing MAbs. These results demonstrate differences of typing ability among these VP7-specific MAbs and emphasize the need to improve the sensitivity of typing systems by incorporating panels of MAbs reacting with several neutralizing epitopes.
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Taylor J, Raj P, Gallacher G, Stott DJ. Outbreak of Clostridium Difficile Diarrhoea. Age Ageing 1992. [DOI: 10.1093/ageing/21.suppl_2.p14-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Aiyar J, Bhan MK, Bhandari N, Kumar R, Raj P, Sazawal S. Rotavirus-specific antibody response in saliva of infants with rotavirus diarrhea. J Infect Dis 1990; 162:1383-4. [PMID: 2172405 DOI: 10.1093/infdis/162.6.1383] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The reliability of saliva as an indicator of rotavirus infection was assessed among 15 infants (3-12 months) with rotaviral and 15 with nonrotaviral diarrhea. Paired salivary samples collected during acute and convalescent phases were tested for rotavirus-specific IgA and IgM by an ELISA. The sensitivity of IgA or IgM alone to predict infection was 53.3% and 46.6%, respectively; used in conjunction, the sensitivity rose to 80%. It seems that infants with rotaviral diarrhea mount mucosal antibody responses as reflected in their saliva; possibly salivary antibodies could be used to evaluate vaccine "take" in rotavirus vaccine trials.
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Raj P, Bhan MK, Srivastva R, Kumar R, Bhandari N, Arora NK. Human enterocyte adhesion of enteroadherent Escherichia coli. Indian J Med Res 1990; 91:368-71. [PMID: 2269509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Esch. coli strains manifesting localised (17), diffuse (8) or aggregative (17) phenotypes of adherence to HEp-2 cells were tested for their ability to adhere to human enterocytes isolated from duodenal biopsies of adult volunteers to obtain further evidence of their enteropathogenecity. Esch. coli strains H10407+; CFAI+ and LT+ STp+ STh+, F 294 B; a localised adherent strain positive with entero-adherent factor probe reported previously to attach to small intestinal enterocytes and F 582 C; LT- STp+ STh+ were the positive controls: H10407P (CFAI- mutant of H10407+) and K12 served as negative control strains. Adherence of variable degree was seen with 35.3 per cent of enteroaggregative Esch. coli (EAggEc) and with 58.8 per cent of enteroadherent Esch. coli localised (EAEC-L); EAEC-diffuse (EAEC-D) did not adhere to the human enterocytes. The possibility that EAgg EC and diffuse phenotypes may adhere better to lower small intestine or the large intestine, needs to be investigated.
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