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Ali W, Liu D, Li J, Pery AD, Herrada N, Mills D, Owen RA, Burton PA, Dong D, Gannaway G, Bushby AJ, Dunstan DJ. Nanostrain sensitivity in a wire torsion experiment. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:013901. [PMID: 32012549 DOI: 10.1063/1.5111325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 12/11/2019] [Indexed: 06/10/2023]
Abstract
The feasibility of a thin-wire torsion stress-strain experiment with nanostrain sensitivity is demonstrated. A gauge length of 50 m was made possible by using The Monument, London, thereby restoring it to its original purpose as a scientific instrument. A wire of 150 μm diameter was studied using the load-unload method, and data were recorded in the elastic regime and through the elastic-plastic transition. Analysis of this preliminary experiment suggested some necessary improvements to the equipment and methods. Progress towards definitive experiments is described together with difficulties still to be overcome.
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Khan W, Nisa NN, Ullah S, Ahmad S, Mehmood SA, Khan M, Ahmad S, Ali W, Ullah H, Anwar K. Gastrointestinal helminths in dog feces surrounding suburban areas of Lower Dir district, Pakistan: A public health threat. BRAZ J BIOL 2019; 80:511-517. [PMID: 31644646 DOI: 10.1590/1519-6984.211956] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 03/25/2019] [Indexed: 11/22/2022] Open
Abstract
Data on environmental contamination of the parasites of zoonotic importance is scarce in Pakistan. Soil contamination with feces of dogs hide infective stages of the parasite represents a health-risk to humans. This study was aimed to assess the eggs of gastrointestinal parasites of stray dogs and household dogs in lower Dir district, Pakistan with special consideration to those that can be spread to humans. One hundred and fifty two stool specimens from (stray dogs=90 and household dogs=62) were collected. The helminth eggs were processed by direct smear method and centrifugation techniques and identified by microscopic examination. Of the total examined dogs 26.8% (n=41 /152) were found to be infected with one or more intestinal parasites. The intestinal helminths detected were Dipylidium caninum (n =18, 11.8%), followed by Toxocara canis (n =16, 10.5%), Taenia spp., (n=10, 6.57%) Ancylostoma caninum (n=6, 3.94), Toxascaris spp., Capillaria spp., and Trichuris vulpis (n=2, 1.31% each) in order of their prevalence. Pattern of infection revealed that 27 (65.8%) dogs have single, 13(31.7%) double and 1(2.43%) triple infection. The stray dogs were highly infected 34.4% (n=31) than house hold dogs 16.1% (n=10). The prevalence of infection with intestinal parasites was significantly different among these two groups (p = 0.0097). This study highlight a severe environmental contamination by frequent parasitic stages infectious to humans. There is a higher risk of zoonotic transmission from dogs which indicate an immediate need for the controlling of these parasites and educating the public to take wise action relating to the parasites and pets.
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Mir Kan B, Ali W. To determine the frequency of depressive disorder and its socioeconomic factors in diagnosed cases of breast cancer visiting a tertiary care hospital of developing country. Breast 2019. [DOI: 10.1016/s0960-9776(19)30454-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Ali W, Tashfeen M, Hussain M. Evaluation of nuclear reaction cross sections via proton induced reactions on 55Mn for the production of 52Fe: A potential candidate for theranostic applications. Appl Radiat Isot 2018; 144:124-129. [PMID: 30579152 DOI: 10.1016/j.apradiso.2018.11.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 11/12/2018] [Accepted: 11/26/2018] [Indexed: 10/27/2022]
Abstract
The proton induced nuclear reactions on 55Mn were considered to investigate for the production of 52Fe. The experimental results obtained by 55Mn(p,4n)52Fe reaction were compared with the results of nuclear model calculations using the codes ALICE-IPPE, EMPIRE 3.2 and TALYS 1.9. The thick target yields (TTY) of 52Fe were calculated from the recommended excitation functions. Analysis of impurities was also discussed. A comparison of the various radio-impurities showed that for the production of 52Fe via 55Mn(p,4n)52Fe reaction, energy ranges from 70→45 MeV could be the method of choice, which gives high yield with minimum impurities to make it as a potential candidate for theranostic applications and in particular, Positron Emission Tomography (PET).
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Khan RSA, Ali W, Kiran S, Shah MSD, Tahir ZA, Habib M. Rapid detection of infectious bursal disease by loop-mediated isothermal amplification for field analysis. IRANIAN JOURNAL OF VETERINARY RESEARCH 2018; 19:101-107. [PMID: 30046320 PMCID: PMC6056140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 01/01/2018] [Accepted: 01/17/2018] [Indexed: 06/08/2023]
Abstract
Infectious bursal disease (IBD) is an immunosuppressive, acute and highly contagious illness of growing-poultry stock infected with infectious bursal disease virus (IBDV). It is common in Pakistan, causing potential economic losses throughout the year. The objective of the study is to propose a rapid, sensitive and specific diagnostic tool, and compare it with existing commonly used reverse transcriptase polymerase chain reaction (RT-PCR) method for IBDV. Different primers were used for RT-PCR and reverse transcriptase loop-mediated isothermal amplification (RT-LAMP) to target the IBD virus. RT-LAMP primers showed prodigious specificity without cross reaction to the other animal pathogens. Moreover, RT-LAMP was found to have 10 times higher selectivity for IBDV identification as compared to RT-PCR. RT-LAMP detected 9.2% more field samples than RT-PCR. Sequences of PCR products were determined and phylogenetic analysis of research isolates revealed its maximum similarity with indigenous and Indian IBDV isolates. RT-LAMP was found to be simple, specific, less laborious and a better technique as compared to RT-PCR for quick analysis. In general, RT-LAMP was declared positive on observing turbidity or adding fluorescence staining reagent such as SYBR Green I. The options of direct use of field sample homogenate and viewing directly the peaks in the graph shown on a monitor/laptop have made it much more convenient and time saving than gel based RT-PCR.
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McFarlane D, Ali W, Lee P, Tsang M, Nair P, Gin K, Tsang T, Jue J. IS 10 YEARS THE APPROPRIATE TIME TO HAVE A FOLLOW UP ECHOCARDIOGRAM AFTER AN IMPLANTED VALVE PROSTHESIS? Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Ali W, Habib M, Khan R, al E. Reverse transcription-polymerase chain reaction (RT-PCR) based detection and economic impact of foot-and-mouth disease in District Faisalabad, Pakistan during the year 2015. IRAQI JOURNAL OF VETERINARY SCIENCES 2017. [DOI: 10.33899/ijvs.2017.126703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Ali W, Kushwaha UP, Mohd W. Oxidized LDL as a biomarker in metabolic syndrome. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1603549] [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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Shivahare R, Ali W, Singh US, Natu SM, Khattri S, Puri SK, Gupta S. Immunoprotective effect of lentinan in combination with miltefosine on Leishmania-infected J-774A.1 macrophages. Parasite Immunol 2016; 38:618-27. [PMID: 27387601 DOI: 10.1111/pim.12346] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 07/04/2016] [Indexed: 11/29/2022]
Abstract
Rejuvenation of deteriorated host immune functions is imperative for successful annihilation of Leishmania parasites. The use of immunomodulatory agents may have several advantages as they conquer immunosuppression and, when given in combination, improve current therapeutic regimens. We herein investigated the immunostimulatory potency of a β-glucan, lentinan either alone or in combination with short dose of standard drug, miltefosine on Leishmania-infected J-774A.1 macrophages. Our study shows that infected macrophages when stimulated with 2.5 μg/mL and above concentrations of lentinan secreted significant amount of host-protective molecules. The in vitro interaction between lentinan and miltefosine showed some synergy (mean sum of fractional inhibitory concentration [mean ∑FIC] 0.87) at IC50 level. Lentinan (2.5 μg/mL) plus low-dose miltefosine (2 μM) displayed heightened level of pro-inflammatory cytokines, IL-12 (13.6-fold) and TNF-α (6.8-fold) along with nitric oxide (7.2-fold higher) when compared with infected control. In combination group, we also observed remarkably (P<.001) suppressed levels of anti-inflammatory cytokines, IL-10 and TGF-β, than that of untreated macrophages. Additionally, in comparison with infected group, we observed significant induction in phagocytic activity of macrophages in combination with treated group. Collectively, these findings emphasize the immunostimulatory effect of lentinan alone and in combination with low dose of miltefosine against Leishmania donovani.
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Monier M, Akl MA, Ali W. Preparation and characterization of selective phenyl thiosemicarbazide modified Au(III) ion-imprinted cellulosic cotton fibers. J Appl Polym Sci 2014. [DOI: 10.1002/app.40769] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Ahmed E, Gehani AA, El-Menyar A, Ali W, Al Binali H, Singh R, Al Suwaidi J. Ethnicity and acute coronary syndrome: insights from a 20-year registry from the Middle East. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ali W, George DR, Shiel RS, Sparagano OAE, Guy JH. Laboratory screening of potential predators of the poultry red mite (Dermanyssus gallinae) and assessment of Hypoaspis miles performance under varying biotic and abiotic conditions. Vet Parasitol 2012; 187:341-4. [PMID: 22301375 DOI: 10.1016/j.vetpar.2012.01.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 11/18/2011] [Accepted: 01/06/2012] [Indexed: 11/18/2022]
Abstract
The poultry red mite, Dermanyssus gallinae (De Geer), is the most important ectoparasitic pest of layer hens worldwide and difficult to control through 'conventional' synthetic acaricides. The present study aimed to identify a suitable predator of D. gallinae that could potentially form the basis of biological control in commercial poultry systems. From four selected predatory mite species (Hypoaspis miles (Berlese), Hypoaspis aculeifer (Canestrini), Amblyseius degenerans (Berlese) and Phytoseiulus persimilis (Athias-Henriot)), Hypoaspis mites demonstrated the greatest potential as predators of D. gallinae. Experiments were also conducted to assess the effect of environmental (temperature and dust), physical (presence of harbourages) and biological (presence of alternative prey) factors on the predatory efficacy of H. miles. Predation of D. gallinae per se was observed under all conditions tested, though was found to be temperature-dependent and reduced by the presence of alternative prey.
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Ali W, Williams AC, Rawlinson CF. Stochiometrically governed molecular interactions in drug: poloxamer solid dispersions. Int J Pharm 2010; 391:162-8. [PMID: 20214957 DOI: 10.1016/j.ijpharm.2010.03.014] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Revised: 02/17/2010] [Accepted: 03/01/2010] [Indexed: 11/29/2022]
Abstract
This study probes the molecular interactions between model drugs and poloxamers that facilitate dissolution rate improvements using solid dispersions. Ibuprofen and ketoprofen solid dispersions were prepared at different mole ratios using poloxamers 407 and 188. The carbonyl stretching vibration of the ibuprofen dimer shifted to higher wavenumber in the infrared spectra of 2:1 drug:carrier mole ratio solid dispersions, indicating disruption of the ibuprofen dimer concomitant with hydrogen bond formation between the drug and carrier. Solid dispersions with mole ratios >2:1 drug:carrier (up to 29:1) showed both ibuprofen hydrogen-bonded to the poloxamer, and excess drug present as dimers. X-ray diffraction studies confirmed these findings with no evidence of crystalline drug in 2:1 mole ratio systems whereas higher drug loadings retained crystalline ibuprofen. Similar results were found with ketoprofen-poloxamer solid dispersions. Thermal analysis of ibuprofen-poloxamer 407 solid dispersions and their resultant phase diagram suggested solid solutions and a eutectic system were formed, depending on drug loading. Dissolution studies showed fastest release from the solid solutions; dissolution rates from solid solutions were 12-fold greater than the dissolution of ibuprofen powder whereas the eutectic system gave a 6-fold improvement over the powder. When designing solid dispersions to improve the delivery of poorly-water soluble drugs, the nature of drug:carrier interactions, which are governed by the stochiometry of the composition, can affect the dissolution rate improvement.
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Sherif W, Hassanein A, Ali W. Effect of Using Elastic Compression Stocking in Prevention of Deep Vein Thrombosis after Hip Surgery in Orthopedic Units at Zagazig University Hospitals. JOURNAL OF HIGH INSTITUTE OF PUBLIC HEALTH 2008. [DOI: 10.21608/jhiph.2008.20980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Zafar T, Ali W, Winter M. Cranial haemophilic pseudotumour: conservative management of an extremely rare complication with factor replacement alone. Haemophilia 2008; 14:838-40. [PMID: 18462381 DOI: 10.1111/j.1365-2516.2008.01706.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Moroney P, O'Connor PA, Ali W, Brady OH. Stress fracture of the femoral neck in a 24-year-old female with anorexia nervosa induced osteoporosis. IRISH MEDICAL JOURNAL 2007; 100:542-3. [PMID: 17886531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
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Zainuddin M, Ali W, Beg Z. Th-P15:164 The protective impacts of tocotrienols on LDL oxidizability and accelerated atherosclerosis induced by oxidized cholesterol in cholesterol fed rabbits. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)82124-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mohsin S, Anwar M, Rehman ZU, Waqar A, Ayyub M, Ali W. Value of D-dimers assay in diagnosis of pulmonary embolism. J PAK MED ASSOC 2004; 54:348-52. [PMID: 15449915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
OBJECTIVE To determine the value of D-Dimers assay in the diagnosis of Pulmonary Embolism (PE) at Armed Forces Institute of Pathology, Rawalpindi, Pakistan from January to November 2000. METHODS Forty three consecutive patients clinically suspected of suffering from pulmonary embolism and referred to Armed Forces Institute of Pathology for Ventilation-Perfusion scan of lungs were inducted in the study. A detailed history was taken and clinical examination was performed. All patients were then subjected to Perfusion and/or Ventilation scan, which was taken as the standard for the diagnosis of PE. Blood samples were collected from all patients in trisodium citrate. Platelet poor plasma obtained from the samples was tested for D-Dimers semi-quantitatively using latex agglutination method. RESULTS Out of 43 patients 14 (32.6%) had completely normal ventilation-perfusion scan hence the diagnosis of PE was excluded. In 6 (13.9%) patients the results were considered indeterminate. Abnormalities suggestive of pulmonary embolism were detected in 23 (53.5%) patients. D-Dimers were less than the cut off value of 500 ng/ml in 19 (44.2%) patients, whereas in 24 (55.8%) the levels were more than 500 ng/ml. When compared with the results of ventilation-perfusion scan the sensitivity of D-Dimers was 91.3% and specificity was 100%. Positive predictive value of the test was 100% whereas negative predictive value was 87.5%. CONCLUSION D-Dimers assay combined with high clinical evidence is a cost effective, readily available test which can safely exclude the diagnosis of pulmonary embolism in majority of the cases.
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Anwar M, Iqbal M, Ayyub M, Ali W. Prevalence of factor XIII deficiency in patients presenting with a bleeding disorder in Pakistan. J Thromb Haemost 2003; 1:2693-4. [PMID: 14675114 DOI: 10.1111/j.1538-7836.2003.0543j.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ali W, Pateman J. Anaesthesia in an unusual location. Anaesthesia 2001. [DOI: 10.1111/j.1365-2044.2001.2279-33.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Misbach J, Ali W. Stroke in Indonesia: a first large prospective hospital-based study of acute stroke in 28 hospitals in Indonesia. J Clin Neurosci 2001; 8:245-9. [PMID: 11386799 DOI: 10.1054/jocn.1999.0667] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Stroke is an increasing cause of morbidity and mortality in Indonesia. Data on clinical patterns of hospitalized Indonesian stroke patients are still not available. This study is a part of ASNA (ASEAN Neurological Association) Stroke Epidemiological Stu dy aimed to investigate clinical profile of stroke in seven ASEAN countries with the same protocol. From 2065 acute stroke patients admitted to 28 hospitals all over Indonesia, the mean age was 58.8 (Standard Deviation [SD] 13.3) years (range: 18-95 year s). 12.9% were younger than 45 years, and 35.8% were older than 65 years. There were more men than women. Mean admission post-stroke time was 48.5 h (SD 98.8) (range: 1-968 h). Most of them arrived at hospital more than 6 h from stroke onset. The reasons for delayed admission were unawareness of stroke symptoms and long distance transportation. The most frequent stroke symptoms were motor disability. The most common risk factors were hypertension, heart disease, cigarette smoking and diabetes mellitus. Recurrent stroke was found in nearly 20% of patients. Ischemic stroke was the most frequent and the majority of the study subjects were discharged alive and improved.
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Yoo D, Lo W, Goodman S, Ali W, Semrad C, Field M. Interferon-gamma downregulates ion transport in murine small intestine cultured in vitro. Am J Physiol Gastrointest Liver Physiol 2000; 279:G1323-32. [PMID: 11093956 DOI: 10.1152/ajpgi.2000.279.6.g1323] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Effects of IFN-gamma on mammalian small intestinal ion transport were studied in vitro using incubated sheets of murine small intestine in Ussing chambers. In oxygenated standard culture medium containing hydrocortisone and antibiotics, they maintained their short-circuit current (I(sc)) responses to glucose and theophylline for 48 h. Histological examination revealed a 50% diminution of villus height over 36 h but no change in crypts. Height was better maintained during a 36-h incubation of small intestine from SCID mice, suggesting a role for B or T lymphocytes in villus atrophy. Exposure of small intestine to 100 U/ml IFN-gamma for 36 h decreased basal I(sc) by 40% and I(sc) responses to glucose and theophylline by approximately 70%; at 1,000 U/ml for 36 h, IFN-gamma inhibited these I(sc) responses by 90%. An inhibitor of inducible NO synthase did not reverse these effects, suggesting that they are not mediated by NO. Tissue resistance, mucosal K(+) content, and epithelial morphology were not affected. Ouabain-sensitive ATPase activity in homogenates was inhibited 60% by IFN-gamma (100 U/ml for 36 h). IFN-gamma inhibition of I(sc) responses to glucose and theophylline also occurred in SCID mouse small intestine. Thus murine small intestinal sheets can be maintained viable in vitro for at least 48 h, although villus blunting develops (but less so in SCID mouse small intestine). Also, prolonged exposure to IFN-gamma downregulates Na(+)-coupled glucose absorption, active Cl(-) secretion, and Na(+)-K(+)-ATPase activity, effects unlikely to be mediated by enhanced NO.
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Ahmad M, Jan M, Ali W, Bashir C, Iqbal Q. Neonatal cholestasis in Kashmiri children. JK PRACTITIONER : A JOURNAL OF CURRENT CLINICAL MEDICINE & SURGERY 2000; 7:125-6. [PMID: 12349647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
Neonatal cholestasis is prolonged elevation of conjugated serum bilirubin (more than 20% of total bilirubin) beyond first 14 days of life. After extensive evaluation a diagnosis of either biliary atresia or neonatal hepatitis is made in 70-80% of cases. Neonatal hepatitis and biliary atresia form a pathophysiologic process directed at various levels of the hepatobiliary tract. Inflammation in the bile duct epithelium may result in the sclerosis and obliteration of the bile ducts and manifest as biliary atresia. Primary hepatocellular inflammation is more likely to result in neonatal hepatitis. Half of the cases of neonatal hepatitis resolve without sequelae, while most of the biliary atresia cases require surgical intervention for repair or, ultimately, liver transplant.
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