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Pai S, Bedford L, Ruramayi R, Aliyu SH, Sule J, Maslin D, Enoch DA. Pseudomonas aeruginosa meningitis/ventriculitis in a UK tertiary referral hospital. QJM 2016; 109:85-9. [PMID: 25991873 DOI: 10.1093/qjmed/hcv094] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Pseudomonas aeruginosa is a rare cause of meningitis and ventriculitis but is generally associated with significant morbidity and mortality. AIM We sought to determine the epidemiology, risk factors and outcome of meningitis and ventriculitis due to P. aeruginosa at our institution in order to inform preventive strategies and treatment guidelines. METHODS Retrospective study of all patients with a positive cerebrospinal fluid (CSF) culture admitted to a tertiary care hospital over 18 years. Clinical details, demographic, microbiological and antibiotic data were obtained from laboratory and medical records. RESULTS Twenty-four episodes occurred in 21 patients over 18 years. Pyrexia (75%), fluctuating mental status (50%) and headache (41%) were the most frequent presenting symptoms. Nineteen of the 21 patients had previously undergone a neurosurgical procedure and seven had extra-ventricular devices in situ. Twelve (57%) patients had P. aeruginosa isolated from another site prior to their episode. Most (89%) CSF samples demonstrated a neutrophilia; the CSF protein, when measured, was raised in all cases. Gram-negative bacilli were visible on CSF microscopy in only three isolates. There were relatively low rates of resistance to most antimicrobials tested and combination treatment of intravenous with intrathecal antibiotics was often used. No patients died within 28 days. CONCLUSION Pseudomonas aeruginosa meningitis and ventriculitis are predominantly nosocomial and related to prior neurosurgery. It can be difficult to diagnose as CSF Gram-film and meningism are insensitive markers. Appropriate empirical treatment, neurosurgical prophylaxis and surveillance can aid in managing this infection.
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Mittal S, Pai S, Rakshith KC, Misri ZK. A forgotten cause of bilateral wrist drop. Neurol India 2016; 64:800-2. [DOI: 10.4103/0028-3886.185407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Shetty S, Rao R, Jindal A, Pai S. Orange web space in a patient with pulmonary tuberculosis. J Eur Acad Dermatol Venereol 2015; 30:e179. [PMID: 26552053 DOI: 10.1111/jdv.13484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pai S, Hsu W, Lin T, Lee F, Lo C. Reconstruction of maxillary and mandibular defects with free fibular flaps: clinical experience review. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Liu Z, Larsen E, Bahamondes S, Choi M, Li J, Cranford K, Hayes C, Grow A, Zheng Y, Wu X, Pai S, Kennedy A. SU-E-J-244: Development and Validation of a Knowledge Based Planning Model for External Beam Radiation Therapy of Locally Advanced Non-Small Cell Lung Cancer. Med Phys 2015. [DOI: 10.1118/1.4924330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Pai S. SU-F-BRA-09: New Efficient Method for Xoft Axxent Electronic Brachytherapy Source Calibration by Pre-Characterizing Surface Applicators. Med Phys 2015. [DOI: 10.1118/1.4925220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Pai S, Ayyalasomayajula S, Lee S. SU-E-P-05: Electronic Brachytherapy: A Physics Perspective On Field Implementation. Med Phys 2015. [DOI: 10.1118/1.4923939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Pai S, Koretomo R, Tamaki S, Berg J, Marbury T, Galloway C, Preston R. FP658JTZ-951, A NOVEL HIF-PHD INHIBITOR, DEMONSTRATES INCREASES IN HEMOGLOBIN, IRON MOBILIZATION, REPRODUCIBLE PHARMACOKINETICS, AND SAFETY FOLLOWING ONCE DAILY ADMINISTRATION FOR 15 DAYS IN PATIENTS WITH ANEMIA RECEIVING HEMODIALYSIS. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv182.06] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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de Graaf H, Pai S, Burns DA, Karas JA, Enoch DA, Faust SN. Co-infection as a confounder for the role of Clostridium difficile infection in children with diarrhoea: a summary of the literature. Eur J Clin Microbiol Infect Dis 2015; 34:1281-7. [PMID: 25926302 DOI: 10.1007/s10096-015-2367-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 03/19/2015] [Indexed: 12/29/2022]
Abstract
Although Clostridium difficile is a major cause of antibiotic-associated diarrhoea in adults, the incidence and severity of C. difficile infection (CDI) in children is unclear. One complicating factor in assessing the role of CDI in children is the possibility of co-infection with other gastrointestinal pathogens. In this review, we summarise the literature concerning C. difficile co-infections in young children, in an attempt to discuss the rate of co-infections and their potential role in the severity of CDI clinical presentation. We identified 31 studies where co-infections were analysed, comprising 1,718 patients with positive C. difficile tests. The pooled percentage of reported co-infections was 20.7% (range 0-100%). Viral co-infections were most commonly reported (46%), with bacteria and parasites accounting for 14.9% and 0.01% of cases, respectively. However, the panel of co-infections tested for varied considerably among studies and 38% of stated co-infections did not have a pathogen reported. Substantial variation in how and when tests for gastrointestinal co-infections are carried out, small sample sizes and a lack of clear CDI case definitions preclude meaningful conclusions on the true rate of co-infections in this patient population. This review suggests that co-infections may be common in children with diarrhoea who tested positive for C. difficile. Given a lack of CDI case definitions, especially in young children under the age of 5 years, a broad panel of pathogens should be tested for to exclude other microbiological causes. However, the summarised poor quality of the available literature on this subject highlights a need for further studies.
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Pai S, Gouliouris T, Kappeler ARM, Gillham MI. Disinfection of dynamic mattresses: highlighting an infection control issue. J Hosp Infect 2015; 90:172-3. [PMID: 25862312 DOI: 10.1016/j.jhin.2015.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 02/16/2015] [Indexed: 10/23/2022]
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Pai S, Smith D, Peng S, Ishida E, Akpeng B, Hung C, Wu T. OC-015: Therapeutic HPV vaccine increases sensitivity of poorly immunogenic tumor to anti-PD-1 monotherapy. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)34775-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mittal S, Rakshith KC, Misri ZK, Pai S, Shenoy N, Gundabolu G. Hypertrophic olivary degeneration due to the presence of pontine cavernomas. Neurol India 2015; 63:981-3. [DOI: 10.4103/0028-3886.170089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Rai S, Madi D, Pai S, Baliga S. Unusual Larva in the CSF and Unique MRI Findings in a Case of Eosinophilic Meningitis. J Clin Imaging Sci 2014; 4:76. [PMID: 25806134 PMCID: PMC4286823 DOI: 10.4103/2156-7514.148303] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 12/27/2014] [Indexed: 11/13/2022] Open
Abstract
Eosinophilic meningitis may be caused by non-infectious and infectious agents. Angiostrongylus cantonensis is the commonest causative agent of eosinophilic meningitis. Rats are the primary hosts of this parasite. Humans get infected by ingestion of raw or inadequately cooked hosts (snails or monitor lizard) or food contaminated with the infective third-stage larvae. A 16-year-old boy was admitted to our hospital with history of fever, headache, and altered sensorium. Magnetic resonance imaging of the brain showed unique findings. Cerebrospinal fluid (CSF) examination showed eosinophilia and the CSF wet mount identified a larva. Patient history revealed ingestion of monitor lizard 2 weeks prior to onset of symptoms. Hence, a diagnosis of eosinophilic meningitis caused by A. cantonensis was made. He was treated with oral albendazole and steroids, resulting in gradual improvement. A. cantonensis as a cause of eosinophilic meningitis is a possibility in patients who present with headache and vomiting after eating raw meat (monitor lizard). To the best of our knowledge, this is a very rare case being reported from India where the larva was identified during the microscopic examination of the CSF.
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Streppel MM, Lata S, DelaBastide M, Montgomery EA, Wang JS, Canto MI, Macgregor-Das AM, Pai S, Morsink FHM, Offerhaus GJ, Antoniou E, Maitra A, McCombie WR. Next-generation sequencing of endoscopic biopsies identifies ARID1A as a tumor-suppressor gene in Barrett's esophagus. Oncogene 2014; 33:347-57. [PMID: 23318448 PMCID: PMC3805724 DOI: 10.1038/onc.2012.586] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 10/28/2012] [Accepted: 10/29/2012] [Indexed: 12/24/2022]
Abstract
The incidence of Barrett's esophagus (BE)-associated esophageal adenocarcinoma (EAC) is increasing. Next-generation sequencing (NGS) provides an unprecedented opportunity to uncover genomic alterations during BE pathogenesis and progression to EAC, but treatment-naive surgical specimens are scarce. The objective of this study was to establish the feasibility of using widely available endoscopic mucosal biopsies for successful NGS, using samples obtained from a BE 'progressor'. Paired-end whole-genome NGS was performed on the Illumina platform using libraries generated from mucosal biopsies of normal squamous epithelium (NSE), BE and EAC obtained from a patient who progressed to adenocarcinoma during endoscopic surveillance. Selective validation studies, including Sanger sequencing, immunohistochemistry and functional assays, were performed to confirm the NGS findings. NGS identified somatic nonsense mutations of AT-rich interactive domain 1A (SWI like) (ARID1A) and PPIE and an additional 37 missense mutations in BE and/or EAC, which were confirmed by Sanger sequencing. ARID1A mutations were detected in 15% (3/20) high-grade dysplasia (HGD)/EAC patients. Immunohistochemistry performed on an independent archival cohort demonstrated ARID1A protein loss in 0% (0/76), 4.9% (2/40), 14.3% (4/28), 16.0% (8/50) and 12.2% (12/98) of NSE, BE, low-grade dysplasia, HGD and EAC tissues, respectively, and was inversely associated with nuclear p53 accumulation (P=0.028). Enhanced cell growth, proliferation and invasion were observed on ARID1A knockdown in EAC cells. In addition, genes downstream of ARID1A that potentially contribute to the ARID1A knockdown phenotype were identified. Our studies establish the feasibility of using mucosal biopsies for NGS, which should enable the comparative analysis of larger 'progressor' versus 'non-progressor' cohorts. Further, we identify ARID1A as a novel tumor-suppressor gene in BE pathogenesis, reiterating the importance of aberrant chromatin in the metaplasia-dysplasia sequence.
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Pandit L, Mustafa S, Kunder R, Shetty R, Misri Z, Pai S, Shetty R. Optimizing the management of neuromyelitis optica and spectrum disorders in resource poor settings: Experience from the Mangalore demyelinating disease registry. Ann Indian Acad Neurol 2013; 16:572-6. [PMID: 24339582 PMCID: PMC3841603 DOI: 10.4103/0972-2327.120474] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 06/23/2013] [Accepted: 06/29/2013] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND In resource-poor settings, the management of neuromyelitis optica (NMO) and NMO spectrum (NMOS) disorders is limited because of delayed diagnosis and financial constraints. AIM To device a cost-effective strategy for the management of NMO and related disorders in India. MATERIALS AND METHODS A cost-effective and disease-specific protocol was used for evaluating the course and treatment outcome of 70 consecutive patients. RESULTS Forty-five patients (65%) had a relapse from the onset and included NMO (n = 20), recurrent transverse myelitis (RTM; n = 10), and recurrent optic neuritis (ROPN; n = 15). In 38 (84.4%) patients presenting after multiple attacks, the diagnosis was made clinically. Only 7 patients with a relapsing course were seen at the onset and included ROPN (n = 5), NMO (n = 1), and RTM (n = 1). They had a second attack after a median interval of 1 ± 0.9 years, which was captured through our dedicated review process. Twenty-five patients had isolated longitudinally extensive transverse myelitis (LETM), of which 20 (80%) remained ambulant at follow-up of 3 ± 1.9 years. Twelve patients (17%) with median expanded disability status scale (EDSS) of 8.5 at entry had a fatal outcome. Serum NMO-IgG testing was done in selected patients, and it was positive in 7 of 18 patients (39%). Irrespective of the NMO-IgG status, the treatment compliant patients (44.4%) showed significant improvement in EDSS (P ≤ 0.001). CONCLUSIONS Early clinical diagnosis and treatment compliance were important for good outcome. Isolated LETM was most likely a post-infectious demyelinating disorder in our set-up. NMO and NMOS disorders contributed to 14.9% (45/303) of all demyelinating disorders in our registry.
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Swarnalatha G, Pai S, Ram R, Dakshinamurty KV. Fulminant hepatic failure following marijuana drug abuse: Molecular adsorbent recirculation system therapy. Indian J Nephrol 2013; 23:384-6. [PMID: 24049281 PMCID: PMC3764719 DOI: 10.4103/0971-4065.116335] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Marijuana is used for psychoactive and recreational purpose. We report a case of fulminant hepatic failure following marijuana drug abuse who recovered following artificial support systems for acute liver failure. There is no published literature of management of marijuana intoxication with molecular adsorbent recirculation system (MARS). MARS is effective and safe in patients with fulminant hepatic failure following marijuana intoxication.
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Raphael B, Lautenschlager M, Kahler A, Pai S, Parks B, Kalb S, Maslanka S, Shah S, Magnuson M, Hill V. Recovery and detection of botulinum toxin type A from drinking water. Toxicon 2013. [DOI: 10.1016/j.toxicon.2012.07.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Pai S, Madi D, Achappa B, Mahalingam S, Kendambadi R. An interesting case of eosinophilic meningitis. J Clin Diagn Res 2013; 7:734-5. [PMID: 23730662 DOI: 10.7860/jcdr/2013/4743.2897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 11/26/2012] [Indexed: 11/24/2022]
Abstract
Angiostrongylus cantonensis is one of the causative agents of eosinophilic meningitis. Humans get infected when they ingest raw or partially cooked snails or monitor lizards (Varanus bengalensis). There is a popular belief that the tongue and the liver of the monitor lizard has aphrodisiac properties. A 20-year-old man was admitted to our hospital with a history of fever, headache and vomiting. His cerebrospinal fluid revealed eosinophilia. He gave a history of the ingestion of a monitor lizard, ten days prior to the onset of the symptoms. So, a diagnosis of eosinophilic meningitis due to Angiostrongylus cantonensis was made. He was treated with oral albendazole and prednisolone. His symptoms improved gradually within two weeks from his admission.
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Kaminsky Z, Tochigi M, Jia P, Pal M, Mill J, Kwan A, Ioshikhes I, Vincent JB, Kennedy JL, Strauss J, Pai S, Wang SC, Petronis A. A multi-tissue analysis identifies HLA complex group 9 gene methylation differences in bipolar disorder. Mol Psychiatry 2012; 17:728-40. [PMID: 21647149 DOI: 10.1038/mp.2011.64] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Epigenetic studies of DNA and histone modifications represent a new and important activity in molecular investigations of human disease. Our previous epigenome-wide scan identified numerous DNA methylation differences in post-mortem brain samples from individuals affected with major psychosis. In this article, we present the results of fine mapping DNA methylation differences at the human leukocyte antigen (HLA) complex group 9 gene (HCG9) in bipolar disorder (BPD). Sodium bisulfite conversion coupled with pyrosequencing was used to interrogate 28 CpGs spanning ∼700 bp region of HCG9 in 1402 DNA samples from post-mortem brains, peripheral blood cells and germline (sperm) of bipolar disease patients and controls. The analysis of nearly 40 000 CpGs revealed complex relationships between DNA methylation and age, medication as well as DNA sequence variation (rs1128306). Two brain tissue cohorts exhibited lower DNA methylation in bipolar disease patients compared with controls at an extended HCG9 region (P=0.026). Logistic regression modeling of BPD as a function of rs1128306 genotype, age and DNA methylation uncovered an independent effect of DNA methylation in white blood cells (odds ratio (OR)=1.08, P=0.0077) and the overall sample (OR=1.24, P=0.0011). Receiver operating characteristic curve A prime statistics estimated a 69-72% probability of correct BPD prediction from a case vs control pool. Finally, sperm DNA demonstrated a significant association (P=0.018) with BPD at one of the regions demonstrating epigenetic changes in the post-mortem brain and peripheral blood samples. The consistent multi-tissue epigenetic differences at HCG9 argue for a causal association with BPD.
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Sanguineti G, Pai S, Westra W, Forastiere A, Califano J. Defining the Risk of Involvement for Each Neck Nodal Level in Patients with Early T-Stage/Node-positive/HPV-related Oropharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Kamijo T, Milart P, Wojcik K, Szkodziak P, Wozniak S, Czuczwar P, Paszkowski T, Landolsi H, Yacoubi MT, Stita W, Gribaa M, Hmissa S, Molenaar N, van Besouw NH, Steegers EAP, Visser W, de Kuiper P, de Krijger R, Exalto N, Lagrand R, Kaandorp SP, Mellink CHM, van Wely M, Redeker EJW, Knegt AC, Goddijn M, Vidal C, Giles J, Meseguer M, Zuzuarregui JL, Bosch E, Pellicer A, Schust D, Sugimoto M, Sugimoto J, Reus AD, Stephenson MD, Steegers EAP, Krijger de RR, Dunne van FM, Exalto N, Exacoustos C, Vaquero E, Di Giovanni A, Romeo V, Lazzarin N, Arduini D, Brahem S, Mehdi M, Atig F, Ghedir H, Ibala S, Ajina M, Saad A, Chang C, Wang H, Huang S, Pai S, Soong Y, Papanikolaou E, Pantos G, Grimbizis G, Bili E, Polyzos N, Karastefanou K, Humaidan P, Esteves S, Tarlatzis B, McNamee K, Topping A, Farquharson RG, Dawood F, Ruiz Galdon M, Lendinez AM, Palomares AR, Martinez F, Perez-Nevot B, Jimenez Fernandez A, Reyes-Engel A, Horcajadas JA, Savaris RF, Kovac V, Reljic M, Vlaisavljevic V, Colicchia A, Pergolini I, Gilio B, Rampini MR, Alfano P, Marconi D, Verlengia C, Alviggi E, Bellver J, Cruz F, Martinez MC, Ramirez J, Ferro J, Garrido N, Brown JK, Lauer KB, Inglis NF, Critchley HOD, Horne AW, Samli H, Cetinkaya Demir B, Ozgoz A, Atalay MA, Uncu G, Yan Y, Cai-hong MA, Jie QIAO, Xin-na CHEN, Weimar CHE, Kavelaars A, Gellersen B, Brosens JJ, de Vreeden-Elbertse JMT, Heijnen CJ, Macklon NS, Castillo JC, Dolz M, Caballero O, Abad L, Perez-Panades J, Bonilla-Musoles F, Eggert - Kruse W, Scholz S, Klopsch I, Strowitzki T. POSTER VIEWING SESSION - EARLY PREGNANCY. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.78] [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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Pai S, Brown N. P21.01 Clostridium difficile diagnosis in the East of England – A re-audit of laboratory methods. J Hosp Infect 2010. [DOI: 10.1016/s0195-6701(10)60207-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wang YN, Lee K, Pai S, Ledoux WR. Histomorphometric comparison after fixation with formaldehyde or glyoxal. Biotech Histochem 2010; 86:359-65. [PMID: 20854226 DOI: 10.3109/10520295.2010.520275] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Formaldehyde has long been the fixative of choice for histological examination of tissue. The use of alternatives to formaldehyde has grown, however, owing to the serious hazards associated with its use. Companies have striven to maintain the morphological characteristics of formaldehyde-fixed tissue when developing alternatives. Glyoxal-based fixatives now are among the most popular formaldehyde alternatives. Although there are many studies that compare staining quality and immunoreactivity, there have been no studies that quantify possible structural differences. Histomorphometric analysis commonly is used to evaluate diseased tissue. We compared fixation with formaldehyde and glyoxal with regard to the histomorphological properties of plantar foot tissue using a combination of stereological methods and quantitative morphology. We measured skin thickness, interdigitation index, elastic septa thickness, and adipocyte area and diameter. No significant differences were observed between formaldehyde and glyoxal fixation for any feature measured. The glyoxal-based fixative used therefore is a suitable fixative for structural evaluation of plantar soft tissue. Measurements obtained from the glyoxal-fixed tissue can be combined with data obtained from formalin-fixed for analysis.
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Shenoy K, Boloor A, Pai S, Suddharsan DS. Unusual presentation of multiple myeloma. Indian J Cancer 2010; 47:347-8. [PMID: 20587918 DOI: 10.4103/0019-509x.64709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
There has always been the temptation to take prohibited substances in the struggle for an athlete to gain the ‘higher ground’ above the rest of the competitors which allow goals to be attained easier than by the conventional training methods. The problem of drugs in sport has existed for a long time and is underestimated in its prevalence. This paper deals with the reasons of why athletes take such drugs, which drugs are available and the testing employed to detect their use. Among the issues discussed will be the future of drugs in sport and what measures can be taken to combat their use.
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