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Chaudhary S, Bansal C. Adenocarcinoma mimicking eruptive xanthomas clinically. CASE REPORTS 2013; 2013:bcr-2013-009715. [DOI: 10.1136/bcr-2013-009715] [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] Open
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Kashiouris M, Akhoundi A, Chaudhary S, Velagapudi V, Goldberg A, Kashani K. Daily fluid balance predicts hospital mortality in critically ill patients receiving continuous renal replacement therapy. Crit Care 2013. [PMCID: PMC3642908 DOI: 10.1186/cc12371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Chhabra HS, Harvey LA, Muldoon S, Chaudhary S, Arora M, Brown DJ, Biering-Sorensen F, Wyndaele JJ, Charlifue S, Horsewell J, Ducharme S, Green D, Simpson D, Glinsky J, Weerts E, Upadhyay N, Aito S, Wing P, Katoh S, Kovindha A, Krassioukov A, Weeks C, Srikumar V, Reeves R, Siriwardane C, Hasnan N, Kalke YB, Lanig I. www.elearnSCI.org: a global educational initiative of ISCoS. Spinal Cord 2013; 51:176-82. [DOI: 10.1038/sc.2012.177] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chaurasia RK, Pradhan B, Chaudhary S, Jha SM. Child-Turcotte-Pugh versus model for end stage liver disease score for predicting survival in hospitalized patients with decompensated cirrhosis. JOURNAL OF NEPAL HEALTH RESEARCH COUNCIL 2013; 11:9-16. [PMID: 23787518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Short term and medium term survival predictive value of the Child-Turcotte-Pugh (CTP) and Model for End Stage Liver Disease (MELD) score has been established but their usefulness in predicting survival of hospitalized patients with decompensated cirrhosis is lacking. We compared the survival predictive value of these scoring systems in hospitalized patients of decompensated cirrhosis and other associated factors. METHODS A prospective, observational study in 216 consecutive cases of decompensated cirrhosis admitted in medical ward, were enrolled if the inclusion criteria were fulfilled. All cases were investigated and treated as per standard guidelines and clinician's judgment. CTP and MELD score were calculated for each case at the time of admission and followed throughout the hospital stay till discharge/death. The accuracy of the different score systems for predicting survival was evaluated through the area under ROC curve. RESULTS CTP and MELD score were higher (12.44 ± 1.07, 31.91 ± 4.92) in expired cases than who improved and discharged (11.32 ± 1.28, 23.97 ± 5.36) respectively with significant p-value (<0.001). Area under ROC curve for serum creatinine, MELD score, blood urea and CTP score for predicting hospital survival were 0.887, 0.864, 0.836 and 0.738 respectively. CONCLUSIONS MELD score is superior to CTP score in predicting survival at the time of discharge in hospitalized patients with decompensated cirrhosis. Renal failure in patients with decompensated cirrhosis carries poor prognosis and has a good outcome prognostic value, even superior to MELD/CTP scoring.
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Arora R, Goswami M, Chaudhary S, Chaitra TR, Kishor A, Rallan M. Comparative evaluation of effects of chemo-mechanical and conventional caries removal on dentinal morphology and its bonding characteristics — An SEM study. Eur Arch Paediatr Dent 2012; 13:179-84. [PMID: 22883356 DOI: 10.1007/bf03262867] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Macpherson IR, Dozynkiewicz M, Kalna G, Speirs C, Chaudhary S, Edwards J, Timpson P, Norman J. Abstract P1-05-13: CLIC3 is associated with invasive behaviour and poorer prognosis in estrogen receptor-negative breast cancer. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p1-05-13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: We previously described a Chloride Intracellular Channel-3 (CLIC3)-dependent recycling pathway which trafficked active integrins from late endosomes to the cell surface and which was required for the migratory and invasive behaviour of A2780 ovarian cancer cells in vitro. We also demonstrated that elevated expression of CLIC3 was associated with poor prognosis in pancreatic cancer. We therefore set out to investigate the role of CLIC3 in breast cancer.
Materials and Methods: CLIC3 expression was assessed by immunohistochemistry and the weighted histoscore method in a tissue microarray (TMA) consisting of triplicate cores from 141 patients diagnosed with invasive estrogen receptor (ER)-negative early breast carcinoma between 1995 and 1998. Full clinicopathological and follow-up data were available. Further data were obtained from publicly available gene expression datasets (Desmedt, GSE7390) and Oncomine™. Knockdown of CLIC3 in the ER-ve MDA-MB231 breast cancer cell line was achieved by nucleofection of 2 different siRNA sequences (Dharmacon). Inverse invasion assays measured invasion into a plug of matrigel supplemented with fibronectin over 72 hours whilst organotypic invasion assays measured invasion into a fibroblast-containing collagen matrix over 6 days.
Results: CLIC3 mRNA expression was significantly elevated in breast cancer in comparison to normal breast tissue in two independent data sets. High CLIC3 protein levels were associated with significantly shorter breast cancer specific survival (p = 0.026) in a TMA of 141 ER-ve patients. This finding was corroborated by the observation that high CLIC3 mRNA levels were associated with shorter overall survival in 198 patients in the Desmedt dataset (p = 0.038). Transient silencing of CLIC3 expression using two independent siRNA sequences had no effect on proliferation of MDA-MB231 cells but significantly reduced their invasiveness by 46% and 93% respectively in an inverse invasion assay and by 36% and 42% respectively in an organotypic invasion assay. CLIC3 was found to co-localise with Rab7 and LAMP1 in late endosomes/lysosomes in MDA-MB231 cells.
Conclusions: Our clinical and in vitro data indicate an important role for CLIC3 in the invasive and metastatic behaviour of some breast cancers. Further work to elucidate molecular mechanisms is underway and will be presented.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P1-05-13.
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Kumar V, Chaudhary S, Kumar M, Gangopadhyay AN. Rhabdomyosarcoma of biliary tract- a diagnostic dilemma. Indian J Surg Oncol 2012; 3:314-6. [PMID: 24293970 DOI: 10.1007/s13193-012-0186-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Accepted: 09/04/2012] [Indexed: 11/26/2022] Open
Abstract
Rhabdomyosarcoma is a soft tissue malignant musculoskeletal tumor. It is a rare tumor in children but the most common cause of malignant obstructive jaundice in them. A 4-year-old child presented to us with obstructive jaundice and palpable liver. He was misdiagnosed as choledochal cyst on imaging studies; however, intraoperative and histopathological features confirmed the diagnosis of rhabdomyosarcoma. Mass excision and Roux en Y portoenterostomy was performed. Post operatively; the patient was put on multimodal chemotherapy. This, being an uncommon entity, is being reported with a review of the available literature.
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Biswas PS, Sen D, Chaudhary S. Middle cranial fossa arachnoid cyst presenting with obsessive compulsive behaviour associated with psychosis - two cases. AFRICAN JOURNAL OF PSYCHIATRY 2012; 15:59-60. [PMID: 22344765 DOI: 10.4314/ajpsy.v15i1.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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59
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Sharma SD, Kumar S, Dagaonkar SS, Bisht G, Dayanand S, Devi R, Deshpande SS, Chaudhary S, Bhatt BC, Kannan S. Dosimetric comparison of linear accelerator-based stereotactic radiosurgery systems. J Med Phys 2011; 32:18-23. [PMID: 21217914 PMCID: PMC3003883 DOI: 10.4103/0971-6203.31145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2006] [Accepted: 12/04/2006] [Indexed: 11/04/2022] Open
Abstract
Stereotactic radiosurgery (SRS) is a special radiotherapy technique used to irradiate intracranial lesions by 3-D arrangements of narrow photon beams eliminating the needs of invasive surgery. Three different tertiary collimators, namely BrainLab and Radionics circular cones and BrainLab micro multileaf collimator (mMLC), are used for linear accelerator-based SRS systems (X-Knife). Output factor (S(t)), tissue maximum ratio (TMR) and off axis ratio (OAR) of these three SRS systems were measured using CC01 (Scanditronix/ Welhofer) and Pinpoint (PTW) cylindrical and Markus plane parallel ionization chambers as well as TLD and radiochromic film. Measurement results of CC01 and Pinpoint chambers were very close to each other which indicate that further reduction in volume and physical dimensions of cylindrical ionization chamber is not necessary for SRS/SRT dosimetry. Output factors of BrainLab and Radionics SRS cones were very close to each other while output factors of equivalent diameter mMLC field were different from SRS circular cones. TMR of the three SRS systems compared were very close to one another. OAR of Radionics cone and BrainLab mMLC were very close to each other, within 2%. However, OARs of BrainLab cone were found comparable to OARs of Radionics cone and BrainLab mMLC within maximum variation of 4%. In addition, user-measured similar data of other three mMLC X-Knives were compared with the mMLC X-Knife data measured in this work and found comparable. The concept of switching over to mMLC-based SRS/SRT is thus validated from dosimetric characteristics as well.
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Kumar S, Kahlon T, Chaudhary S. A rapid screening for adulterants in olive oil using DNA barcodes. Food Chem 2011; 127:1335-41. [PMID: 25214135 DOI: 10.1016/j.foodchem.2011.01.094] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 12/30/2010] [Accepted: 01/22/2011] [Indexed: 11/24/2022]
Abstract
A distinctive methodology is developed to trace out the mixing into olive oil, which is marketed every year with 20% or more fraudulent oils. Such adulteration has been difficult to differentiate using fatty acid analysis and other available current techniques, as chemically fatty acids are same regardless of their source. The total genomic DNA isolated from olive oil, contaminated with canola and sunflower was analysed for single nucleotide polymorphism (SNP) variation in noncoding spacer region between psbA-trnH and partial coding region of matK of plastid genome. These DNA regions were amplified by PCR using specific primers and resulting DNA sequences were matched to the predetermined consensus DNA barcode sequences of canola and sunflower for discerning the contaminations in olive oil samples. The matching of an adulterant DNA sequence with their respective DNA barcode revealed the mixing of canola and sunflower oil into olive is simpler way and the combined approach of molecular biology and bioinformatics technology can be used as an inexpensive method for ensuring the purity of olive. This plastid based molecular DNA technology can be used for rapid detection of adulteration easily up to 5% in olive oil.
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Guru P, Ganguli A, Bains A, Chaudhary S, Bhargava A, Lund R. 121: Pregabalin Therapy in Refractory Uremic Pruritus. Am J Kidney Dis 2010. [DOI: 10.1053/j.ajkd.2010.02.128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kinhikar R, Chaudhary S, Upreti R, Kumar P, Tambe C, Dhote D, Deshpande D. Clinical Application of Isorad and QED In Vivo Semiconductor Diodes for IMRT and Total Skin Electron Therapy: Feasibility Study. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.1517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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63
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Seth A, Saini A, Chaudhary S, Nayak B, Saxena V, Wadhwa P. VID-03.04: Malignant Adrenal Pheochromocytoma with Atriocaval Thrombus. Urology 2009. [DOI: 10.1016/j.urology.2009.07.719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Khardori N, Behren L, Chaudhary S, McConnachie P, Strano A, Tewari RP. Cellular Mediators of Anti-Histoplasma Immunity: I. Protective Immunity and Cellular Changes in Spleens of Mice Immunized by Sublethal Infection with Yeast Cells of Histoplasma capsulatum*/ Zelluläre Mediatoren der Anti-Histoplasma-Immunität: I. Protektiv. Mycoses 2009. [DOI: 10.1111/j.1439-0507.1986.tb03760.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Khardori N, Chaudhary S, McConnachie P, Tewari RP. Characterization of Lymphocytes Responsible for Protective Immunity to Histoplasmosis in Mice*/Charakterisierung von Lymphozyten der protektiven Immunität gegen Histoplasmose bei Mäusen. Mycoses 2009. [DOI: 10.1111/j.1439-0507.1983.tb03150.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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66
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Ajaz A, Alam S, Chaudhary S. Metoclopramide and domperidone in the treatment of gastroparesis. Hippokratia 2008. [DOI: 10.1002/14651858.cd004777.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sudarsanan S, Chaudhary S, Pawar AA, Srivastava K. Psychiatric Effects of Traumatic Brain Injury. Med J Armed Forces India 2007; 63:259-63. [PMID: 27408012 PMCID: PMC4922739 DOI: 10.1016/s0377-1237(07)80150-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2004] [Accepted: 04/11/2005] [Indexed: 11/18/2022] Open
Abstract
In India 30,000 people die and 1,25,000 become disabled due traumatic brain injury (TBI). The psychiatric sequalae of TBI can be acute and chronic. Chronic sequalae of TBI are usually ignored and may take the form of defects of cognition, memory, perception, language or intelligence. It may also lead to inappropriate aggression, sexual behaviour, personality change, mood changes, neurosis and psychosis. Neuropsychological assessment of TBI can be pharmacological or behavioural. Survivors of TBI are referred to a walking wounded and require to be cared for.
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Mazumder R, Bhattacharya S, Mazumder A, Pattnaik AK, Tiwary PM, Chaudhary S. Antidiarrhoeal evaluation of Aegle Marmelos (Correa) Linn. root extract. Phytother Res 2006; 20:82-4. [PMID: 16397850 DOI: 10.1002/ptr.1804] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A study was undertaken to evaluate the in vitro and in vivo antidiarrhoeal potential of chloroform extract of the root of Aegle marmelos (Correa) Linn. The in vitro activity was determined by agar dilution and disc diffusion techniques. The extract was studied in vivo in rats. Of the 35 tested pathogenic diarrhoea causing strains, the extract was found to be mostly active against the strains of Vibrio cholerae, followed by Escherichia coli and Shigella spp. The in vitro activity was found to be comparable to that of ciprofloxacin. Further, Aegle marmelos root extract (AMRE) treated animals showed significant inhibitory activity against castor oil-induced diarrhoea. The results so obtained thus established the efficacy of AMRE as an effective antidiarrhoeal agent.
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Abstract
Multiple supernumerary teeth without any associated systemic conditions or syndromes are not common. We document a case of non-syndrome multiple supplemental supernumerary teeth in mandibular premolar region of an adolescent male patient, an incidental findings during routine radiographic examination. Periodic examination is recommended to monitor the clinical behavior.
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Abstract
BACKGROUND Psychosomatic factors and their association with dermatological disorders are well recognized, yet their importance in oral lichen planus (OLP) is still debated. This study was done to determine the importance of psychosocial stressors in patients with OLP. METHODS An analytical age-sex matched double controlled study. Stratified serial random sampling was done for sample selection. The experimental group consisted of biopsy proven OLP subjects (n = 41), negative control consisted of apparently healthy general Out Patient Department (OPD) patients (n = 73) and positive controls were patients with burning mouth syndrome, atypical facial pain and myofacial pain dysfunction syndrome (n = 36). The General Health Questionnaire-version 28 (GHQ-28) and the Hospital Anxiety and Depression Scale (HADS) were used to evaluate psychosocial stressors in terms of stress, anxiety and depression respectively. RESULTS The OLP patients had significantly higher stress (Z = 4.331; p < 0.05, significant), anxiety (Z = 4.260; p < 0.05, significant) and depression levels (Z = 4.942; p < 0.05, significant) than the negative controls when measured by GHQ and HADS respectively. Similar findings were noted between the two control groups, with higher stress (Z = 5.784; p < 0.05, significant), anxiety (Z = 6.416; p < 0.05, significant), and depression (Z = 4.841; p < 0.05, significant) levels in the positive control group. However, differences in stress (Z = 2.0416; p > 0.05, non-significant), anxiety (Z = 1.681; p > 0.05, non-significant) and depression levels (Z = 0.195; p > 0.05, non-significant) were found to be non-significant between OLP and positive control. CONCLUSION Significantly higher stress, anxiety and depression levels were found in the OLP and positive control than the general population. No significant difference was noted between the OLP and the positive controls (in which psychosocial stressors are the sole etiology). These suggest that psychological stressors play an important role in the causation of OLP. It may be further hypothesized that these stressors form a starting point for the initiation of various autoimmune reactions, which have been shown to be contributory to the pathogenesis of OLP. Further longitudinal studies need to be done globally before definitive conclusions can be drawn.
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Kalra N, Chaudhary S, Singh B. Mucus extravasation phenomenon on the alveolar ridge in neonate: a case report. J Indian Soc Pedod Prev Dent 2004; 22:36-7. [PMID: 15255445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
Pediatric dentists often come across lesions in neonates, the most common ones being Bohn's nodules and Epstein Pearls. Other common lesions seen in the oral cavity of neonates are congenital epulis, hemangiomas and mucus extravasation cysts. Mucus extravasation phenomenon is generally encountered over the lip but rarely seen over the alveolar ridge. Presented here is a case of a 1-month-old baby with a mucus extravasation cyst measuring 0.7 x 1 cm in size over the alveolar ridge.
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Noel RJ, Chaudhary S, Rodriguez N, Kumar A, Yamamura Y. Phylogenetic relationships between Puerto Rico and continental USA HIV-1 pol sequences: a shared HIV-1 infection. Cell Mol Biol (Noisy-le-grand) 2003; 49:1193-8. [PMID: 14983986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
In order to investigate the existing notion that the human immunodeficiency virus type 1 (HIV-1) infection in Puerto Rico (PR) was imported from the continental United States of America (USA) we sequenced and analyzed 900 bases of the HIV-1 pol sequence from individuals in PR for comparison with pol sequences from the USA mainland. The sequences were derived by direct sequencing of reverse transcription-polymerase chain reaction products generated from plasma virus. The products were sequenced in both directions and the complementary strands were compared prior to analysis. These processed sequences and GenBank sequences from the continental USA were subjected to phylogenetic analyses. The PR and USA sequences did not form independent clusters, indicating a shared HIV-1 infection. This may be due to the continuous human traffic or, less likely, may indicate a similar evolution of a common source virus. Analysis of drug resistance mutations, fairly similar in frequency in the PR and USA sequences analyzed here, supports human traffic as a rationale for the common infection. This work indicates that an efficacious vaccine developed for use in the USA mainland will also be effective in prevention in PR and perhaps the other countries of the Caribbean region.
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Kad GL, Singh V, Chaudhary S, Setia S, Bhandari M, Singh J. Efficient synthesis of (+/-)-7-isopropyl-2,10-dimethyl-8(E),10-undecadien-4-one and 3,7-dimethyl-11-oxo-2(E),6(E)-dodecadienol (oxocrinol) under ultrasound. ULTRASONICS SONOCHEMISTRY 2001; 8:123-6. [PMID: 11326606 DOI: 10.1016/s1350-4177(00)00063-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A simple and convergent synthesis of the title compounds has been achieved involving Zn-Cu couple catalysed conjugate addition of allylic halides to alpha,beta-unsaturated carbonyl compounds promoted by ultrasonic waves in aqueous medium as a key step in good overall yields.
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Nagar S, Juyal RC, Chaudhary S, Behari M, Gupta M, Rao SN, Thelma BK. Mutations in the alpha-synuclein gene in Parkinson's disease among Indians. Acta Neurol Scand 2001; 103:120-2. [PMID: 11227130 DOI: 10.1034/j.1600-0404.2001.103002120.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To investigate the prevalence of G88C, G209A and any other mutation(s) in exons 3 and 4 of the alpha-synuclein gene in Indian patients with Parkinson's disease (PD). METHODS A total of 169 PD patients comprising 18 familial, 3 juvenile, 48 early onset and 100 sporadic cases were included in this study. Genomic DNA was amplified by PCR using primers specific for Exons 3 and 4. Mutations at G88C and G209A were screened following restriction enzyme digestion of the PCR product. Direct PCR product sequencing of entire exons 3 and 4 was carried out for at least one proband each from the 10 familial cases. RESULTS Neither G88C and G209A mutations nor any other mutation in exons 3 and 4 was found in the PD patients analysed. CONCLUSION The G88C and G209A mutations do not seem to be the predominant genetic determinant of PD among Indians.
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Huang YS, Chaudhary S, Thurmond JM, Bobik EG, Yuan L, Chan GM, Kirchner SJ, Mukerji P, Knutzon DS. Cloning of delta12- and delta6-desaturases from Mortierella alpina and recombinant production of gamma-linolenic acid in Saccharomyces cerevisiae. Lipids 1999; 34:649-59. [PMID: 10478922 DOI: 10.1007/s11745-999-0410-8] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Two cDNA clones with homology to known desaturase genes were isolated from the fungus Mortierella alpina. The open reading frame in one clone encoded 399 amino acids and exhibited delta12-desaturase activity when expressed in Saccharomyces cerevisiae in the presence of endogenous fatty acid substrate oleic acid. The insert in another clone contained an open reading frame encoding 457 amino acids and exhibited delta6-desaturase activity in S. cerevisiae in the presence of exogenous fatty acid substrate linoleic acid. Expression of the delta12-desaturase gene under appropriate media and temperature conditions led to the production of linoleic acid at levels up to 25% of the total fatty acids in yeast. When linoleic acid was provided as an exogenous substrate to the yeast cultures expressing the delta6-desaturase activity, the level of gamma-linolenic acid reached 10% of the total yeast fatty acids. Co-expression of both the delta6- and delta12-desaturase cDNA resulted in the endogenous production of gamma-linolenic acid. The yields of gamma-linolenic acid reached as high as 8% of total fatty acids in yeast.
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