1
|
Kumar S, Kumar R, Bibwe BR, Nath P, Singh RK, Mandhania S, Pal A, Soni R, Kumar A. Postharvest handling of ethylene with oxidative and absorptive means. J Food Sci Technol 2024; 61:813-832. [PMID: 38487289 PMCID: PMC10933227 DOI: 10.1007/s13197-023-05777-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/15/2023] [Accepted: 05/24/2023] [Indexed: 03/17/2024]
Abstract
Fruit ripening is an unfolding of a series of genetically-programmed modifications and tend to be highly orchestrated irrevocable phenomenon mediated by ethylene. Phytohormone ethylene also leads to over-ripening, senescence, loss of texture, microbial attack, reduced post-harvest life and other associated problems during storage and transportation of fruits. Its harmful impacts on fresh fruits, vegetables, and ornamentals result in substantial product losses even up to 80%. Curbing of this inevitable menace is therefore need of the hour. Accrual of ethylene in packaging system should fundamentally be ducked to extend the shelf-life and uphold an adequate superiority of perishables in visual and organoleptic terms. The current review discusses about properties, factors affecting and impact of ethylene, intimidation of its impact at gene vis-à-vis activity level using gene-modification/inhibition techniques, chemical/physical in conjunction with other suitable approaches. It also entails the most commercially cultivated approaches worldwide viz. KMnO4-based oxidation together with adsorption-based scrubbing of ethylene in thorough details. Future ethylene removal strategies should focus on systematic evaluation of KMnO4-based scavenging, exploring the mechanism of adsorption, adsorbent(s) behavior in the presence of other gases and their partial pressures, volatiles, temperature, relative humidity, development of hydrophobic adsorbents to turn-up under high RH, regeneration of adsorbent by desorption, improvement in photocatalytic oxidation etc. and further improvements thereof. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s13197-023-05777-1.
Collapse
Affiliation(s)
- Sunil Kumar
- Division of Quality and Basic Science, ICAR-Indian Institute of Wheat and Barley Research, Agrasain Marg, PO Box-158, Karnal, 132001 India
| | - Ramesh Kumar
- ICAR-Central Institute of Post-Harvest Engineering and Technology, Abohar, 152116 India
| | - Bhushan R. Bibwe
- ICAR-Directorate of Oilseed and Garlic Research, Pune, 410505 India
| | - Prerna Nath
- ICAR-RCER, Research Center, Ranchi, 834010 India
| | - Rajesh K. Singh
- ICAR-Central Institute of Post-Harvest Engineering and Technology, Ludhiana, 141004 India
| | | | - Ajay Pal
- CCS Haryana Agricultural University, Hisar, 125004 India
| | - Ramesh Soni
- Government National College, Sirsa, 125055 India
| | - Anuj Kumar
- Division of Quality and Basic Science, ICAR-Indian Institute of Wheat and Barley Research, Agrasain Marg, PO Box-158, Karnal, 132001 India
| |
Collapse
|
2
|
Matveyenko A, Thomas T, Matienzo N, Ramakrishnan R, Seid H, Ginsberg H, Soni R, Soffer G. Relationship between plasma apolipoproteinc3 and plasma lipoprotein(a) levels in a diverse, healthy population. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
3
|
Ugwuja DI, Okoro UC, Soman SS, Soni R, Okafor SN, Ugwu DI. New peptide derived antimalaria and antimicrobial agents bearing sulphonamide moiety. J Enzyme Inhib Med Chem 2019; 34:1388-1399. [PMID: 31392901 PMCID: PMC6713104 DOI: 10.1080/14756366.2019.1651313] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/05/2019] [Accepted: 07/26/2019] [Indexed: 01/17/2023] Open
Abstract
Fourteen novel dipeptide carboxamide derivatives bearing benzensulphonamoyl propanamide were synthesized and characterized using 1H NMR, 13C NMR, FTIR and MS spectroscopic techniques. In vivo antimalarial and in vitro antimicrobial studies were carried out on these synthesized compounds. Molecular docking, haematological analysis, liver and kidney function tests were also evaluated to assess the effect of the compounds on the organs. At 200 mg/kg body weight, 7i inhibited the multiplication of the parasite by 81.38% on day 12 of post-treatment exposure. This was comparable to the 82.34% reduction with artemisinin. The minimum inhibitory concentration (MIC) in µM ranged from 0.03 to 2.34 with 7h having MIC of 0.03 µM against Plasmodium falciparium. The in vitro antibacterial activity of the compounds against some clinically isolated bacteria strains showed varied activities with some of the new compounds showing better activities against the bacteria and the fungi more than the reference drug ciprofloxacin and fluconazole.
Collapse
Affiliation(s)
- D. I. Ugwuja
- Department of Chemical Sciences, Federal University, Wukari, Nigeria
| | - U. C. Okoro
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
| | - S. S. Soman
- Department of Chemistry, The Maharaja Sayajirao University of Baroda, Vadodara, India
| | - R. Soni
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka, Nigeria
| | - S. N. Okafor
- Department of Chemistry, The Maharaja Sayajirao University of Baroda, Vadodara, India
| | - D. I. Ugwu
- Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
| |
Collapse
|
4
|
Suliman A, Ducas R, Hiebert B, Tam J, Shah A, Soni R. ADULTS WITH CONGENITAL HEART DISEASE: THE CRITICAL TRANSITION FROM PAEDIATRICS TO ADULT CARE. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
5
|
Affiliation(s)
- R Soni
- Dayanand Medical College and Hospital, India
| | - J Kaur
- Dayanand Medical College and Hospital, India
| | - S Kaur
- Dayanand Medical College and Hospital, India
| |
Collapse
|
6
|
Ramprakash S, Agarwal RK, Dhanya R, Sedai A, Kumari A, Parmar L, Srinivas R, Kakulamari VR, Marwah P, Soni R, Williams S, Rathnayake W, Sen S, Tulpule S, Faulkner L. Rejection of paternal vs maternal fully matched bone marrow grafts in children with thalassemia. Bone Marrow Transplant 2017; 52:1585-1586. [PMID: 28920948 PMCID: PMC5671933 DOI: 10.1038/bmt.2017.199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S Ramprakash
- Bone Marrow Transplant Unit, People Tree Hospitals, Bangalore, India
| | | | - R Dhanya
- Sankalp India Foundation, Bangalore, India
| | - A Sedai
- Sankalp India Foundation, Bangalore, India
| | - A Kumari
- Sankalp India Foundation, Bangalore, India
| | - L Parmar
- Sankalp India Foundation, Bangalore, India
| | - R Srinivas
- Sankalp India Foundation, Bangalore, India
| | | | - P Marwah
- Bone Marrow Transplant Unit, South East Asia Institute for Thalassemia, Jaipur, India
| | - R Soni
- Bone Marrow Transplant Unit, South East Asia Institute for Thalassemia, Jaipur, India
| | - S Williams
- Bone Marrow Transplant Unit, Nawaloka Hospital, Colombo, Sri Lanka
| | - W Rathnayake
- Bone Marrow Transplant Unit, Nawaloka Hospital, Colombo, Sri Lanka
| | - S Sen
- Bone Marrow Transplant Unit, Kokilaben Dhirubhai Ambani Hospital, Mumbai, India
| | - S Tulpule
- Bone Marrow Transplant Unit, Kokilaben Dhirubhai Ambani Hospital, Mumbai, India
| | - L Faulkner
- Cure2Children Foundation, Florence, Italy
| |
Collapse
|
7
|
Jindal RM, Soni R, Mehta K, Patel TG. Incidence of diabetes and hypertension in indigenous Amerindian village in Guyana, South America. Indian J Nephrol 2016; 26:389-390. [PMID: 27795642 PMCID: PMC5015526 DOI: 10.4103/0971-4065.181471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- R M Jindal
- Department of Surgery and Preventative Medicine and Biostatistics, Uniformed Services University of the Health Sciences and Walter Reed NNMC, Bethesda, MD, USA
| | - R Soni
- Department of Medicine, Central Michigan University College of Medicine, Saginaw, MI, USA
| | - K Mehta
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - T G Patel
- Department of Medicine, Uniformed Service University, Bethesda, MD, USA
| |
Collapse
|
8
|
Meena PS, Soni R, Jain M, Jilowa CS. Cognitive Dysfunction and Associated Behaviour Problems in Postpartum Women: A Study from North India. East Asian Arch Psychiatry 2016; 26:104-108. [PMID: 27703098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVES During and after childbirth women undergo tremendous psychological and biological changes. These biological changes, along with the stress of assuming the new role of mother, make postpartum women vulnerable to various psychiatric disorders including cognitive dysfunction, depression, and anxiety. Such problems are under-reported as they are difficult to identify, especially by caregivers who are more focused on the newborn. The present study aimed to evaluate the prevalence of behaviour problems and cognitive dysfunction during the postpartum period. METHODS A cross-sectional study was carried out at the Department of Obstetrics and Gynaecology, Jawahar Lal Nehru Medical College, Ajmer, India. The study sample included 200 consecutive women who came for their first follow-up after childbirth, and 100 healthy and non-pregnant women who served as controls. Cognitive function was assessed using the Standard Mini-Mental State Examination Scale (SMMSE), Brief Cognitive Rating Scale (BCRS), and Trail Making Test Part B (TMT-B). 21-Item Depression Anxiety and Stress Scale was administered to assess depressive and anxiety symptoms. RESULTS Postpartum women scored poorly on SMMSE, BCRS, and TMT-B compared with non-pregnant women (p < 0.001), whereas subscores of depression, anxiety, and stress were significantly higher (p < 0.001). CONCLUSIONS Women had significantly more cognitive deficits during the postpartum period than their non-pregnant counterparts. The former also had a higher prevalence of depression, anxiety, and stress.
Collapse
Affiliation(s)
- P S Meena
- Department of Psychiatry, Jawahar Lal Nehru Medical College, Ajmer, India
| | - R Soni
- Department of Psychiatry, Jawahar Lal Nehru Medical College, Ajmer, India
| | - M Jain
- Department of Psychiatry, Jawahar Lal Nehru Medical College, Ajmer, India
| | - C S Jilowa
- Department of Psychiatry, Jawahar Lal Nehru Medical College, Ajmer, India
| |
Collapse
|
9
|
Jindal RM, Mehta K, Soni R, Doyle A, Patel TG. Diabetes, hypertension, sanitation, and health education by high school students in Guyana, South America. Indian J Nephrol 2016; 26:192-8. [PMID: 27194834 PMCID: PMC4862265 DOI: 10.4103/0971-4065.161522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
We initiated a program for early detection of diabetes and hypertension, the main causes of kidney failure in Guyana, South America. We trained local high school students with the goal that these students would stay in the villages for long-term, become health advocates and shift the reliance away from physicians. This project involved 7 high school students who were taught to monitor the health of one village of 1000–1500 population each. The program will be implemented for 3 years in which the entire population of seven villages (approximately 10,000 people) will be covered. This represents 1.3% population in Guyana. We present data from the pilot study from the sample of 619 people. The prevalence of diabetes mellitus was 13.9%. Among diabetics, 33.7% were using insulin and 86% oral hypoglycemic agents. Prevalence of hypertension was 29.4%, 63.2% were overweight and 17% were obese. About 9.9% patients were unaware about the existence of hypertension. We have shown in our study that high school students can be used to collect health data and monitor diabetes and hypertension. There was also a significant incidence of undetected diabetes and hypertension.
Collapse
Affiliation(s)
- R M Jindal
- Department of Surgery, Division of Global Health, Uniformed Services University of the Health Sciences, Bethesda, MD; Department of Medicine and Surgery, The George Washington University, Washington, DC, USA
| | - K Mehta
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - R Soni
- Department of Medicine, Central Michigan University College of Medicine, Saginaw, MI, USA
| | - A Doyle
- Department of Medicine, Drexel University School of Medicine, Philadelphia, PA, USA
| | - T G Patel
- Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| |
Collapse
|
10
|
Hansen M, Ziegler M, Kolberg L, Soni R, Dirkmann S, Mussenbrock T, Kohlstedt H. A double barrier memristive device. Sci Rep 2015; 5:13753. [PMID: 26348823 PMCID: PMC4562229 DOI: 10.1038/srep13753] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 08/04/2015] [Indexed: 11/27/2022] Open
Abstract
We present a quantum mechanical memristive Nb/Al/Al2O3/NbxOy/Au device which consists of an ultra-thin memristive layer (NbxOy) sandwiched between an Al2O3 tunnel barrier and a Schottky-like contact. A highly uniform current distribution for the LRS (low resistance state) and HRS (high resistance state) for areas ranging between 70 μm2 and 2300 μm2 were obtained, which indicates a non-filamentary based resistive switching mechanism. In a detailed experimental and theoretical analysis we show evidence that resistive switching originates from oxygen diffusion and modifications of the local electronic interface states within the NbxOy layer, which influences the interface properties of the Au (Schottky) contact and of the Al2O3 tunneling barrier, respectively. The presented device might offer several benefits like an intrinsic current compliance, improved retention and no need for an electric forming procedure, which is especially attractive for possible applications in highly dense random access memories or neuromorphic mixed signal circuits.
Collapse
Affiliation(s)
- M. Hansen
- Nanoelektronik, Technische Fakultät Kiel, Christian-Albrechts-Universität Kiel, Kiel 24143, Germany
| | - M. Ziegler
- Nanoelektronik, Technische Fakultät Kiel, Christian-Albrechts-Universität Kiel, Kiel 24143, Germany
| | - L. Kolberg
- Nanoelektronik, Technische Fakultät Kiel, Christian-Albrechts-Universität Kiel, Kiel 24143, Germany
| | - R. Soni
- Nanoelektronik, Technische Fakultät Kiel, Christian-Albrechts-Universität Kiel, Kiel 24143, Germany
| | - S. Dirkmann
- Ruhr University Bochum, Faculty of Electrical Engineering and Information Technology, Institute of Theoretical Electrical Engineering, Bochum D-44780, Germany
| | - T. Mussenbrock
- Ruhr University Bochum, Faculty of Electrical Engineering and Information Technology, Institute of Theoretical Electrical Engineering, Bochum D-44780, Germany
| | - H. Kohlstedt
- Nanoelektronik, Technische Fakultät Kiel, Christian-Albrechts-Universität Kiel, Kiel 24143, Germany
| |
Collapse
|
11
|
Sheth K, Mehta T, Sheth V, Soni R, Puri S, Parke A. SAT0405 Risk of Status Epilepticus and Intractable Epilepsy in Systemic Lupus Erythematosus Patients with Antiphospholipid Antibodies. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
12
|
Mehta T, Sheth K, Puri S, Soni R, Sheth V, Parke A. THU0352 Risk of Status Epilepticus and Intractable Epilepsy in Systemic Lupus Erythematosus Patients with Lupus Nephritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
13
|
Panosyan E, Gotesman M, Kallay T, Martinez S, Bolaris M, Lasky J, Fouyssac F, Gentet JC, Frappaz D, Piguet C, Gorde-Grosjean S, Grill J, Schmitt E, Pall-Kondolff S, Chastagner P, Dudley R, Torok M, Gallegos D, Liu A, Handler M, Hankinson T, Dudley R, Torok M, Gallegos D, Liu A, Handler M, Hankinson T, Fukuoka K, Yanagisawa T, Suzuki T, Shirahata M, Adachi JI, Mishima K, Fujimaki T, Matsutani M, Sasaki A, Wada S, Nishikawa R, Suzuki M, Kondo A, Miyajima M, Arai H, Morin S, Uro-Coste E, Munzer C, Gambart M, Puget S, Miquel C, Maurage CA, Dufour C, Leblond P, Andre N, Kanold J, Icher C, Bertozzi AAI, Diez B, Muggeri A, Cerrato S, Calabrese B, Arakaki N, Marron A, Sevlever G, Fisher MJ, Widemann BC, Dombi E, Wolters P, Cantor A, Vinks A, Parentesis J, Ullrich N, Gutmann D, Viskochil D, Tonsgard J, Korf B, Packer R, Weiss B, Fisher MJ, Marcus L, Weiss B, Kim A, Dombi E, Baldwin A, Whitcomb P, Martin S, Gillespie A, Doyle A, Widemann BC, Bulwer C, Gan HW, Ederies A, Korbonits M, Powell M, Jeelani O, Jacques T, Stern E, Spoudeas H, Kimpo M, Tang J, Tan CL, Yeo TT, Chong QT, Ruland V, Hartung S, Kordes U, Wolff JE, Paulus W, Hasselblatt M, Patil S, Zaky W, Khatua S, Lassen-Ramshad Y, Christensen L, Clausen N, Bendel A, Dobyns W, Bennett J, Reyes-Mugica M, Petronio J, Nikiforova M, Mueller H, Kirches E, Korshunov A, Pfister S, Mawrin C, Hemenway M, Foreman N, Kumar A, Kalra S, Acharya R, Radhakrishnan N, Sachdeva A, Nimmervoll B, Hadjadj D, Tong Y, Shelat AA, Low J, Miller G, Stewart CF, Guy RK, Gilbertson RJ, Miwa T, Nonaka Y, Oi S, Sasaki H, Yoshida K, Northup R, Klesse L, McNall-Knapp R, Blagia M, Romeo F, Toscano S, D'Agostino A, Lafay-Cousin L, Lindzon G, Bouffet E, Taylor M, Hader W, Nordal R, Hawkins C, Laperriere N, Laughlin S, Shash H, McDonald P, Wrogemann J, Ahsanuddin A, Matsuda K, Soni R, Vanan MI, Cohen K, Taylor I, Rodriguez F, Burger P, Yeh J, Rao S, Iskandar B, Kienitz BA, Bruce R, Keller L, Salamat S, Puccetti D, Patel N, Hana A, Gunness VRN, Berthold C, Hana A, Bofferding L, Neuhaeuser C, Scalais E, Kieffer I, Feiden W, Graf N, Boecher-Schwarz H, Hertel F, Cruz O, Morales A, de Torres C, Vicente A, Gonzalez MA, Sunol M, Mora J, Garcia G, Guillen A, Muchart J, Yankelevich M, Sood S, Diver J, Savasan S, Poulik J, Bhambhani K, Hochart A, Gaillard V, Bonne NX, Baroncini M, Andre N, Vannier JP, Dubrulle F, Lejeune JP, Vincent C, Leblond P, Japp A, Gessi M, Muehlen AZ, Klein-Hitpass L, Pietsch T, Sharma M, Yadav R, Malgulwar PB, Pathak P, Sigamani E, Suri V, Sarkar C, Jagdevan A, Singh M, Sharma BS, Garg A, Bakhshi S, Faruq M, Doromal D, Villafuerte CJ, Tezcanli E, Yilmaz M, Sengoz M, Peker S, Dhall G, Robison N, Margol A, Evans A, Krieger M, Finlay J, Rosser T, Khakoo Y, Pratilas C, Marghoob A, Berger M, Hollmann T, Rosenblum M, Mrugala M, Giglio P, Keene C, Ferreira M, Garcia D, Weil A, Khatib Z, Diaz A, Niazi T, Bhatia S, Ragheb J, Robison N, Rangan K, Margol A, Rosser T, Finlay J, Dhall G, Gilles F, Morris C, Chen Y, Shetty V, Elbabaa S, Guzman M, Abdel-Baki MS, Abdel-Baki MS, Waguespack S, Jones J, Stapleton S, Baskin D, M, Okcu F. RARE TUMOURS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
14
|
|
15
|
Horne D, Pries S, Lee J, Hiebert B, Buffo I, Soni R, Pepelassis D. 047 Ethnic Differences in Congenital Cardiac Disease in Manitoba. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
16
|
Soni R, Soda G, Schwarz K. Recurrent faints due to asystole in an adolescent boy. Arch Dis Child 2011; 96:1146. [PMID: 21903600 DOI: 10.1136/archdischild-2011-300587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- R Soni
- Department of Paediatrics, Calderdale Royal Hospital, Halifax HX3 0PW, UK.
| | | | | |
Collapse
|
17
|
Pepelassis D, Coe Y, Buffo-Sequeira I, Soni R, Cholakis L, Dicke F. 046 Safety of Endomyocardial Biopsy in Two Pediatric Non-Surgical Centers Using the New Atc Bioptome with Variable Flexibility. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
18
|
|
19
|
Soni R, Wander G, Gupta N. P1-407 The emerging epidemic of obesity in Punjab (India): a population based study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976f.97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
20
|
Mamtani M, Chatterjee N, Mishra A, Soni R, Jawahirani A, Das K, Rughwani V, Shrivastava M, Kulkarni H. Hemoglobin F levels influence the results of NESTROFT: replication in two surveys. Int J Lab Hematol 2011; 33:113-5. [DOI: 10.1111/j.1751-553x.2010.01252.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
Deb S, Chaplin R, Sohanpal S, Unwin G, Soni R, Lenotre L. The effectiveness of mood stabilizers and antiepileptic medication for the management of behaviour problems in adults with intellectual disability: a systematic review. J Intellect Disabil Res 2008; 52:107-113. [PMID: 18197949 DOI: 10.1111/j.1365-2788.2007.00965.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND Psychotropic medications are used to manage behaviour problems in adults with intellectual disability (ID). One group of psychotropic medication are mood stabilizers such as lithium and some antiepileptic drugs. METHOD A comprehensive systematic review was performed to determine the evidence base for the effectiveness of mood stabilizers in the management of behaviour problems among adults with ID. Electronic searches of PsycInfo, Medline, Embase and Cinahl databases were conducted, as well as a thorough hand search for relevant literature. We reviewed primary trials relating to adults only that satisfied strict inclusion criteria. RESULTS One randomized controlled trial (RCT) relating to lithium use and two non-RCTs, one on lithium and the other on carbamazepine, were revealed. In addition, one prospective non-controlled trial on sodium valproate and three retrospective case series studies were discovered, of which one considered the efficacy of lithium, one valproate and one topiramate. CONCLUSIONS The current evidence lends some support for the use of lithium and some antiepileptic mood stabilizer medication for the management of behaviour problems in adults with ID. However, because most studies reviewed here are riddled with obvious methodological constrains, the findings have to be interpreted with caution.
Collapse
Affiliation(s)
- S Deb
- Division of Neuroscience, University of Birmingham, Queen Elizabeth Psychiatric Hospital, Birmingham, UK.
| | | | | | | | | | | |
Collapse
|
22
|
Malik R, Priyadarsiny P, Shirumalla R, Soni R, Ray A, Saini K. Gene expression profile of ovalbumin-induced lung inflammation in a murine model of asthma. J Investig Allergol Clin Immunol 2008; 18:106-112. [PMID: 18447139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
BACKGROUND Asthma is a chronic inflammatory disease that is associated with airway hyperresponsiveness, tissue remodeling, and airway obstruction, and that involves coordinate expression of multiple inflammatory genes in the lungs. OBJECTIVE To evaluate the gene expression pattern in a mouse model of asthma and assess the effect of a new drug, R142571, on the gene expression profile. METHODS Lung tissue from ovalbumin-sensitized mice was used to examine gene expression on the CodeLink oligonucleotide mouse 20 K bioarray platform. Data were validated for some genes by semiquantitative reverse-transcriptase polymerase chain reaction. RESULTS Of the 19,736 genes represented on the microarray, expression of 378 genes was differentially regulated (215 upregulated and 163 downregulated), with at least a 2-fold change in expression (P <.05). The differentially regulated transcripts included genes known to be involved in several different biological processes, including signaling, DNA-dependent transcriptional regulation, immune response, proteolysis, and peptidolysis. Cluster analysis of the differentially regulated genes showed that at least 16 were downregulated by R142571 treatment at both of the doses used (1 and 10 mg/kg). In addition, 46 and 29 genes were downregulated at doses of 10 mg/kg and 1 mg/kg, respectively, as compared to the animals treated with vehicle. CONCLUSION The cytokine expression pattern in our data, suggests that the murine model exhibits a predominantlyT helper 2-type response, as observed in asthmatic human subjects. Based on this study, we suggest that this mouse model would be an appropriate system for screening new drug molecules for treatment of atopic asthma.
Collapse
Affiliation(s)
- R Malik
- Department of Biotechnology, New Drug Discovery Research, Ranbaxy Research Laboratories, Gurgaon, India
| | | | | | | | | | | |
Collapse
|
23
|
Deb S, Sohanpal SK, Soni R, Lenôtre L, Unwin G. The effectiveness of antipsychotic medication in the management of behaviour problems in adults with intellectual disabilities. J Intellect Disabil Res 2007; 51:766-77. [PMID: 17803495 DOI: 10.1111/j.1365-2788.2007.00950.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
BACKGROUND Psychopharmacological intervention in the management of behaviour problems in adults with intellectual disabilities (ID) has become a common treatment strategy. This has become a cause for concern, given that the evidence for its effectiveness is uncertain and most drugs are not licensed for this use. METHODS A comprehensive systematic review of empirical research on the effectiveness of antipsychotic medication was conducted. Electronic and manual searches of literature were conducted. Stringent scientific methodology determined those primary trials that were worthy of inclusion. RESULTS This review revealed one randomized controlled trial (RCT), one controlled, four uncontrolled prospective and three retrospective case series studies in adults. Additionally, two studies in both adults and children--one crossover RCT and one prospective controlled trial--were found. CONCLUSION Presently, there is RCT-based evidence for risperidone to be effective in both adults and children; however, this treatment carries a certain amount of risk associated with adverse effects. There is also evidence to support the use of other antipsychotics, primarily atypicals, but the evidence is based on noncontrolled case studies. There is currently not enough evidence available to recommend specific medication for specific behaviour problems. Before prescribing medication, clinicians should carry out a thorough assessment of behaviour, including its causes and consequences, and draw up a formulation providing the rationale for the prescribed intervention after considering all medication- and nonmedication-based management options.
Collapse
Affiliation(s)
- S Deb
- Division of Neuroscience, University of Birmingham, Birmingham, UK.
| | | | | | | | | |
Collapse
|
24
|
Sohanpal SK, Deb S, Thomas C, Soni R, Lenôtre L, Unwin G. The effectiveness of antidepressant medication in the management of behaviour problems in adults with intellectual disabilities: a systematic review. J Intellect Disabil Res 2007; 51:750-65. [PMID: 17803494 DOI: 10.1111/j.1365-2788.2006.00935.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
BACKGROUND A comprehensive systematic review was performed to establish the current evidence base regarding the effectiveness of antidepressant medication for the management of behaviour problems in adults with intellectual disabilities. METHOD An electronic search of PsycInfo, Embase, Medline and Cinahl databases was conducted spanning the time period 1990 to October 2005 for primary trials. This was supplemented by hand searching and cross-referencing of relevant reviews. Strict scientific methodology requirements were formulated that the studies had to meet in order to merit inclusion in this review. RESULTS One crossover randomized controlled trial in a small cohort, seven prospective uncontrolled trials and two retrospective studies were yielded in the search. Of these, one explored the effectiveness of the tricyclic antidepressant--clomipramine, and nine considered various selective serotonin reuptake inhibitors (SSRIs). CONCLUSION Evidence based primarily on a small number of either prospective or retrospective case studies that included a small number of participants and often used non-validated outcome measures for a short period of follow-up, suggests that antidepressants, particularly SSRIs, show improvement of aggression and self-injurious behaviour on average in less than 50% of cases and the rest show either no improvement or deterioration. The effect is most pronounced in the presence of an underlying anxiety or an associated diagnosis of obsessive-compulsive disorder. Most studies have highlighted the concern regarding adverse effects.
Collapse
Affiliation(s)
- S K Sohanpal
- Department of Psychiatry, Division of Neuroscience, University of Birmingham, Birmingham, UK
| | | | | | | | | | | |
Collapse
|
25
|
Abbasi SA, Nipaney PC, Soni R. Environmental consequences of the inhibition in the hatching of pupae ofAedes aegyptiby mercury, zinc and chromium — the abnormal toxicity of zinc. ACTA ACUST UNITED AC 2007. [DOI: 10.1080/00207238508710184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
26
|
Abbasi S, Soni R. Stress‐induced enhancement of reproduction in earthwormoctochaetus pattoniexposed to chromium (vi) and mercury (ii)— implications in environmental management. ACTA ACUST UNITED AC 2007. [DOI: 10.1080/00207238308710100] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
27
|
Abbasi SA, Soni R. Teratogenic effects of chromium (vi) in environment as evidenced by the impact on larvae of amphibianRana Tigrina:implications in the environmental management of chromium. ACTA ACUST UNITED AC 2007. [DOI: 10.1080/00207238408710146] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
28
|
Holmes D, Romero L, Klein L, Soni R, Lagios M, Silverstein M. Outcome after invasive recurrence in patients with ductal carcinoma in situ of the breast. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)91064-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
29
|
Abstract
We describe the first association of pulmonary atresia, intact ventricular septum, and absent central pulmonary arteries with deletion 22q11.2. The pulmonary blood flow was derived from major aortopulmonary collaterals. The role of the deletion in pulmonary arborization is discussed.
Collapse
Affiliation(s)
- C Li
- Section of Genetics and Metabolism, Children's Hospital, Health Sciences Center, Winnipeg Regional Health Authority, 840 Sherbrook Street, Winnipeg, Manitoba R3A 1S1, Canada
| | | | | | | |
Collapse
|
30
|
Johnson-Henry K, Wallace JL, Basappa NS, Soni R, Wu GK, Sherman PM. Inhibition of attaching and effacing lesion formation following enteropathogenic Escherichia coli and Shiga toxin-producing E. coli infection. Infect Immun 2001; 69:7152-8. [PMID: 11598092 PMCID: PMC100109 DOI: 10.1128/iai.69.11.7152-7158.2001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Enteropathogenic Escherichia coli (EPEC) and Shiga toxin-producing E. coli (STEC) induce cytoskeletal changes in infected epithelial cells. To further characterize host cytosolic responses to infection, a series of specific cell-signaling inhibitors were employed. Initial bacterial adhesion to HEp-2 epithelial cells was not reduced, whereas alpha-actinin accumulation in infected cells was blocked by a phosphoinositide-specific phospholipase C inhibitor (ET-18-OCH3), phosphoinositide 3-kinase inhibitors (wortmannin and LY294002), and a 5-lipoxygenase inhibitor, nordihydroguaretic acid. A cyclooxygenase-2 inhibitor (NS-398), however, did not block alpha-actinin reorganization in response to EPEC and STEC infections. Understanding signal transduction responses to enteric pathogens could provide the basis for the development of novel therapeutic strategies.
Collapse
Affiliation(s)
- K Johnson-Henry
- Research Institute, Hospital for Sick Children, Departments of Paediatrics and Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | | | | | | | | | | |
Collapse
|
31
|
Abrahams S, Cavet G, Oakenfull EA, Carmichael JP, Shah ZH, Soni R, Murray JA. A novel and highly divergent Arabidopsis cyclin isolated by complementation in budding yeast. Biochim Biophys Acta 2001; 1539:1-6. [PMID: 11389963 DOI: 10.1016/s0167-4889(01)00106-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A novel cyclin, CycJ18, was isolated by complementation of G1 cyclin-deficient budding yeast with an Arabidopsis cDNA library. CycJ18 shares only 20% identity in its conserved cyclin box domain with other cyclins, and is predominantly expressed in young seedlings. CycJ18 is a member of a potential new plant cyclin class.
Collapse
Affiliation(s)
- S Abrahams
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, CB2 1QT, Cambridge, UK
| | | | | | | | | | | | | |
Collapse
|
32
|
Soni R, Chaudhuri B. Cell cycle arrest mediated by a pyridopyrimidine is not abrogated by over-expression of Bcl-2 and cyclin D1. Int J Oncol 2001; 18:1035-40. [PMID: 11295053 DOI: 10.3892/ijo.18.5.1035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Inhibition of cyclin dependent kinases (Cdks) is of pivotal importance in tumor cell biology as these kinases are the drivers of cell proliferation. This inhibition can be achieved either by naturally occurring biological proteins or by small molecule compounds. They cause cell cycle arrest and/or apoptosis depending upon the specificity and efficacy of the inhibitor in question. We have reported earlier that specific pyridopyrimidines (novel Cdk inhibitors) cause cell cycle arrest in mink lung epithelial cells and the arrest is abrogated by over-expression of Cdk4. In contrast, we show here that one of these inhibitors effectively maintains cell cycle arrest in a leukemic or a breast cancer cell line even after the respective cells over-express an oncogene, either Bcl-2 or cyclin D1. However, in the leukemic cells, Bcl-2 over-expression suppresses apoptosis induced by the pyridopyrimidine. Thus, novel Cdk inhibitors can prove to be useful chemical genetics tools for understanding the underlying mechanisms of growth arrest and/or apoptosis in normal versus tumor cells. This could also lead to the development of improved inhibitors of cell proliferation.
Collapse
Affiliation(s)
- R Soni
- Leicester School of Pharmacy, Hawthorn Building, De Montfort University, The Gateway, Leicester, LE1 9BH, UK
| | | |
Collapse
|
33
|
Soni R, O'Reilly T, Furet P, Muller L, Stephan C, Zumstein-Mecker S, Fretz H, Fabbro D, Chaudhuri B. Selective in vivo and in vitro effects of a small molecule inhibitor of cyclin-dependent kinase 4. J Natl Cancer Inst 2001; 93:436-46. [PMID: 11259469 DOI: 10.1093/jnci/93.6.436] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Cyclin-dependent kinase 4 (Cdk4) represents a prime target for the treatment of cancer because most human cancers are characterized by overexpression of its activating partner cyclin D1, loss of the natural Cdk4-specific inhibitor p16, or mutation(s) in Cdk4's catalytic subunit. All of these can cause deregulated cell growth, resulting in tumor formation. We sought to identify a small molecule that could inhibit the kinase activity of Cdk4 in vitro and to then ascertain the effects of that inhibitor on cell growth and tumor volume in vivo. METHODS A triaminopyrimidine derivative, CINK4 (a chemical inhibitor of Cdk4), was identified by screening for compounds that could inhibit Cdk4 enzyme activity in vitro. Kinase assays were performed on diverse human Cdks and on other kinases that were expressed in and purified from insect cells to determine the specificity of CINK4. Cell cycle effects of CINK4 on tumor and normal cells were studied by flow cytometry, and changes in phosphorylation of the retinoblastoma protein (pRb), a substrate of Cdk4, were determined by western blotting. The effect of the inhibitor on tumor growth in vivo was studied by use of tumors established through xenografts of HCT116 colon carcinoma cells in mice. Statistical tests were two-sided. RESULTS CINK4 specifically inhibited Cdk4/cyclin D1 in vitro. It caused growth arrest in tumor cells and in normal cells and prevented pRb phosphorylation. CINK4 treatment resulted in statistically significantly (P: =.031) smaller mean tumor volumes in a mouse xenograft model. CONCLUSIONS Like p16, the natural inhibitor of Cdk4, CINK4 inhibits Cdk4 activity in vitro and slows tumor growth in vivo. The specificity of CINK4 for Cdk4 raises the possibility that this small molecule or one with a similar structure could have therapeutic value.
Collapse
Affiliation(s)
- R Soni
- Oncology Research, Novartis Pharma AG, Basel, Switzerland
| | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Soni R, Muller L, Furet P, Schoepfer J, Stephan C, Zumstein-Mecker S, Fretz H, Chaudhuri B. Inhibition of cyclin-dependent kinase 4 (Cdk4) by fascaplysin, a marine natural product. Biochem Biophys Res Commun 2000; 275:877-84. [PMID: 10973815 DOI: 10.1006/bbrc.2000.3349] [Citation(s) in RCA: 120] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Small chemical molecules that interfere with biological proteins could be useful for gaining insight into the complex biochemical processes in mammalian cells. Cdk4 is a key protein whose activity is required not only for emergence of cells from quiescence but also at the G1/S transition in the cell cycle and which is misregulated in 60-70% of human cancers. We set out to identify chemical inhibitors of Cdk4 and discovered that, in vitro, fascaplysin specifically inhibited Cdk4. Molecular modelling based on the crystal structure of Cdk2 suggests that fascaplysin inhibits Cdk4 by binding to the ATP pocket of the kinase. Treatment of tumour (p16(-), pRb(+)) and normal (p16(+), pRb(+)) cell lines with fascaplysin caused G1 arrest and prevented pRb phosphorylation at sites implicated as being specific for Cdk4 kinase. Fascaplysin will therefore prove to be a useful tool in studying the consequence of Cdk4 inhibition, especially in cells containing inactivated p16.
Collapse
Affiliation(s)
- R Soni
- Oncology Research, Novartis Pharma AG, Basel, CH 4002, Switzerland
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Soni R, Fretz H, Muller L, Schoepfer J, Chaudhuri B. Novel Cdk inhibitors restore TGF-beta sensitivity in cdk4 overexpressing epithelial cells. Biochem Biophys Res Commun 2000; 272:794-800. [PMID: 10860833 DOI: 10.1006/bbrc.2000.2849] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Transforming growth factor-beta (TGF-beta) is a potent mitogen that effects a wide variety of cells by blocking cell growth. TGF-beta acts by interacting with components of cell cycle machinery to cause G1 arrest and in mink lung epithelial cells (Mv1Lu) it does so by inhibiting Cdk4 synthesis. Overexpression of Cdk4 in these cells (B7) renders them resistant to the effects of TGF-beta. Here we report that two novel Cdk inhibitors (pyridopyrimidines) that not only inhibit Cdk4 and Cdk2 in an in vitro kinase assay but also, in the absence of TGF-beta, block growth of Mv1Lu cells in G1 more efficiently than their B7 (overexpressing Cdk4) counterparts. Interestingly, these inhibitors restored sensitivity of B7 cells towards TGF-beta. This may have implications for the treatment of tumors that have lost TGF-beta responsiveness due to deregulated cellular growth in vivo. These Cdk inhibitors could therefore be used in conjunction with TGF-beta to understand the mechanism of growth arrest in normal versus tumour cells.
Collapse
Affiliation(s)
- R Soni
- Oncology Research, Novartis Pharma AG, Basel, Switzerland
| | | | | | | | | |
Collapse
|
36
|
Dobbin CJ, Soni R, Jelihovsky T, Bye PT. Cepacia syndrome occurring following prolonged colonisation with Burkholderia cepacia. Aust N Z J Med 2000; 30:288-9. [PMID: 10833131 DOI: 10.1111/j.1445-5994.2000.tb00828.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
37
|
|
38
|
Abstract
A 19-year-old woman with a recent history of recurrent bronchitis presented with a spontaneous left pneumothorax. Review of the chest radiographs revealed features of Macleod's syndrome on the same side, with unilateral lucency and hypoplastic hilar vessels. To our knowledge this is the first report of Macleod's syndrome presenting with spontaneous pneumothorax.
Collapse
Affiliation(s)
- R Soni
- Department of Respiratory Medicine, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.
| | | |
Collapse
|
39
|
Soni R, Seale JP, Young IH. Fulminant psittacosis requiring mechanical ventilation and demonstrating serological cross-reactivity between Legionella longbeachae and Chlamydia psittaci. Respirology 1999; 4:203-5. [PMID: 10382241 DOI: 10.1046/j.1440-1843.1999.00176.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Chlamydia psittaci infection typically causes a mild respiratory illness in humans. Severe respiratory failure requiring mechanical ventilation or intensive care therapy is an uncommon development. The aetiological agents causing severe community acquired pneumonia often remain undetermined. Serological tests may aid in diagnosis. We present two cases of fulminant psittacosis, one demonstrating early cross-reactivity with Legionella longbeachae.
Collapse
Affiliation(s)
- R Soni
- Department of Respiratory Medicine, Royal Prince Alfred Hospital, New South Wales, Australia.
| | | | | |
Collapse
|
40
|
Soni R. Optimal feeding for the malnourished CAPD patient. EDTNA ERCA J 1997; 23:16-8, 21. [PMID: 9664017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Protein-calorie malnutrition is present in a significant percentage of dialysis patients (1). In CAPD (Continuous Ambulatory Peritoneal Dialysis) patients, constant glucose absorption from dialysate may displace other calorie sources, such as protein, and may suppress the appetite thus contributing to malnutrition.
Collapse
Affiliation(s)
- R Soni
- Department of Nutrition and Dietetics, University College London Hospitals, UK
| |
Collapse
|
41
|
Steiner JP, Hamilton GS, Ross DT, Valentine HL, Guo H, Connolly MA, Liang S, Ramsey C, Li JH, Huang W, Howorth P, Soni R, Fuller M, Sauer H, Nowotnik AC, Suzdak PD. Neurotrophic immunophilin ligands stimulate structural and functional recovery in neurodegenerative animal models. Proc Natl Acad Sci U S A 1997; 94:2019-24. [PMID: 9050897 PMCID: PMC20035 DOI: 10.1073/pnas.94.5.2019] [Citation(s) in RCA: 258] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Although immunosuppressant immunophilin ligands promote neurite outgrowth in vitro, their neurotrophic activities are clearly independent of their immunosuppressive activity. In the present report, a novel nonimmunosuppressive immunophilin ligand, GPI-1046 (3-(3-pyridyl)-1-propyl (2S)-1-(3,3-dimethyl-1,2-dioxopentyl)-2-pyrrolidinecarboxylate+ ++) is described. In vitro, GPI-1046 bound to FK506 binding protein-12 and elicited neurite outgrowth from sensory neuronal cultures with picomolar potency with maximal effects comparable to nerve growth factor. In vivo, GPI-1046 stimulated the regeneration of lesioned sciatic nerve axons and myelin levels. In the central nervous system, GPI-1046 promoted protection and/or sprouting of serotonin-containing nerve fibers in somatosensory cortex following parachloroamphetamine treatment. GPI-1046 also induced regenerative sprouting from spared nigrostriatal dopaminergic neurons following 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine toxicity in mice or 6-hydroxydopamine (6-OHDA) toxicity in rats. The rotational abnormality in 6-OHDA treated rats was alleviated by GPI-1046. These neurotrophic actions in multiple models suggest therapeutic utility for GPI-1046 in neurodegenerative diseases.
Collapse
Affiliation(s)
- J P Steiner
- Department of Neurobiological Research, Guilford Pharmaceuticals Inc., Baltimore, MD 21224, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Tak T, Soni R, Dave R, Chandraratna PA, Chandrasoma P. Prolonged survival after massive pulmonary embolism in a patient with atrial septal defect and mass in the right ventricle. Can J Cardiol 1997; 13:199-202. [PMID: 9070171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Unless thrombolytic or surgical therapy is rapidly available, massive pulmonary embolism in both pulmonary arteries invariably results in instantaneous death. A patient is presented with congenital atrial septal defect and right ventricular thrombus who developed extensive bilateral pulmonary embolism with an apparently prolonged survival. The ante- and postmortem findings represent the unusual and interesting aspects of this particular case.
Collapse
Affiliation(s)
- T Tak
- Department of Medicine, University of Southern California School of Medicine, Los Angeles County, USA.
| | | | | | | | | |
Collapse
|
43
|
Abstract
Previous studies on the cell cycle of Arabidopsis thaliana have been hindered by the lack of synchronous cell culture systems. We have used liquid callus cultures and a cycloheximide-synchronized suspension culture of Arabidopsis to investigate changes in cyclin transcript levels in response to exogenous auxin, cytokinin, and nutrients, and during the cell cycle. CYCD1 (delta 1) transcript was virtually undetectable in liquid-cultured callus or suspension-culture cells. CYCD2 (delta 2) transcript levels were largely unaffected by the readdition of phytohormones or nitrate to the growth medium, and remained constant throughout the cell cycle in suspension-culture cells. CYCD3 (delta 3) transcript levels were strongly dependent on nitrate, and were induced at the G1/S transition following phytohormone readdition. In synchronized suspension-culture cells, CYCD3 transcript accumulated during the S phase, and remained constant thereafter. These results support the hypothesis that D cyclins function as part of the cellular machinery that integrates diverse signals impinging upon commitment to cell division. In synchronized cells transcripts of the mitotic cyclins CYC1, CYC2, and CYC3 reached a maximum with peak mitotic index, but CYC3 transcript levels increased earlier than those of CYC1 or CYC2. The kinetics of accumulation of CYC transcript levels support their classification as A-type (CYC3) and B-type (CYC1 and CYC2) cyclins, respectively.
Collapse
Affiliation(s)
- R A Fuerst
- Department of Botany, University of Leicester, United Kingdom
| | | | | | | |
Collapse
|
44
|
Soni R, Bose S, Gada D, Potnis V. Basopenia as an indicator of ovulation (a short term clinical study). Indian J Physiol Pharmacol 1996; 40:385-8. [PMID: 9055113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In the present study 60 cases age ranging from 18-40 years were studied for variation in the absolute basophil count on the different days of menstrual cycle. At the time of ovulation a statistically significant decrease in the number of basophil count was noted. The decrease in the number of basophil at mid cycle coincided with the irregular follicle seen by sonography, which indicated ovulation. The basophil count then increased during the luteal phase. Basopenia at the time of ovulation was probably due to migration of these cells from the peripheral blood towards the rupturing follicle for the release of histamine required for ovulation.
Collapse
Affiliation(s)
- R Soni
- Department of Physiology, M.G.M. Medical College, Indore
| | | | | | | |
Collapse
|
45
|
Cockerill F, Beebakhee G, Soni R, Sherman P. Polysaccharide side chains are not required for attaching and effacing adhesion of Escherichia coli O157:H7. Infect Immun 1996; 64:3196-200. [PMID: 8757853 PMCID: PMC174207 DOI: 10.1128/iai.64.8.3196-3200.1996] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Escherichia coli of the serotype O157:H7 is an enterohemorrhagic human pathogen which demonstrates attaching and effacing adhesion to colonocytes in vivo and to epithelial cells grown in tissue culture. Transposon TnphoA mutants of E. coli O157:H7 strain CL-8 were produced. Two of 300 alkaline phosphatase positive mutants, designated JB6 and JB27, did not express O157 side chains as assessed by agglutination with specific polyclonal O157 antiserum, silver staining of lipopolysaccharide extracts separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and Western immunoblots with polyclonal O157-specific antiserum. Both O157-negative mutants and the parent strain demonstrated localized adherence to HEp-2 cells when examined by Giemsa staining and bright-field microscopy. Furthermore, both O157-negative mutants showed enhanced adherence to HEp-2 cells compared with the parent strain when assessed by quantification of adherent bacterial CFUs. The parent strain, CL-8, and both of the mutants produced fluorescent foci when adherent bacteria and HEp-2 cells were stained with fluorescein isothiocyanate-labelled phalloidin. Transmission electron microscopy confirmed attaching and effacing adherence of strain CL-8 and the OO7-negative mutants to HEp-2 cells. These findings indicate that mutants deficient in O157 polysaccharide repeats exhibit adherence to tissue culture cells in vitro and that O157 polysaccharide repeats are not required to produce the attaching and effacing lesion.
Collapse
Affiliation(s)
- F Cockerill
- The Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | | | | | | |
Collapse
|
46
|
Ismaili A, Philpott DJ, Dytoc MT, Soni R, Ratnam S, Sherman PM. Alpha-actinin accumulation in epithelial cells infected with attaching and effacing gastrointestinal pathogens. J Infect Dis 1995; 172:1393-6. [PMID: 7594686 DOI: 10.1093/infdis/172.5.1393] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Fluorescent F-actin staining utilizing phalloidin, a highly toxic mushroom poison, is used as an indirect test to detect attaching and effacing (AE) bacteria. A study was done to determine if accumulation of alpha-actinin in infected tissue culture cells is a consistent feature and whether it corresponds with the AE response. Rearrangement of alpha-actinin was detected using immunofluorescence microscopy by incubation of infected cells with a murine monoclonal anti-alpha-actinin antibody. Foci of alpha-actinin-specific fluorescence corresponding to areas of bacterial adhesion were detected by transmission electron microscopy in HEp-2 and gastric KATO-III cells infected with only those bacterial strains that formed AE lesions. Therefore, this study shows that alpha-actinin accumulation is a consistent, specific manifestation of the AE phenotype and forms the basis for the development of a safe alternative test for detecting AE bacteria.
Collapse
Affiliation(s)
- A Ismaili
- Division of Gastroenterology, Hospital for Sick Children, Toronto, Ontario, Canada
| | | | | | | | | | | |
Collapse
|
47
|
Abstract
Transplants of a spontaneous murine fibrosarcoma (FSaII) treated with intraperitoneal ATP were studied in vitro, and in both C3H and nu/nu mice. Daily ATP treatment prolonged tumor volume doubling time in vivo and in vitro. Daily ATP treatments at the maximally tolerated dose (2 mmol/kg i.p.) did not significantly affect the pH or the PCr/Pi, or beta ATP/Pi ratios (measured by MRS). In contrast to the reduced tumor growth rate, there was no change in bone marrow recovery after whole body irradiation. ATP is minimally toxic to animals at active dose levels. It slows tumor growth rate without adversely affecting bone marrow radiation tolerance. ATP might therefore be useful as a biological modifier of chemotherapy or radiation therapy.
Collapse
Affiliation(s)
- J Froio
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | | | | | | | | |
Collapse
|
48
|
Soni R, Carmichael JP, Shah ZH, Murray JA. A family of cyclin D homologs from plants differentially controlled by growth regulators and containing the conserved retinoblastoma protein interaction motif. Plant Cell 1995; 7:85-103. [PMID: 7696881 PMCID: PMC160767 DOI: 10.1105/tpc.7.1.85] [Citation(s) in RCA: 105] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A new family of three related cyclins has been identified in Arabidopsis by complementation of a yeast strain deficient in G1 cyclins. Individual members show tissue-specific expression and are conserved in other plant species. They form a distinctive group of plant cyclins, which we named delta-type cyclins to indicate their similarities with mammalian D-type cyclins. The sequence relationships between delta and D cyclins include the N-terminal sequence LXCXE. This motif was originally identified in certain viral oncoproteins and is strongly implicated in binding to the retinoblastoma protein pRb. By analogy to mammalian cyclin D, these plant homologs may mediate growth and phytohormonal signals into the plant cell cycle. In support of this hypothesis, we show that, on restimulation of suspension-cultured cells, cyclin delta 3 is rapidly induced by the plant growth regulator cytokinin and cyclin delta 2 is induced by carbon source.
Collapse
Affiliation(s)
- R Soni
- Institute of Biotechnology, University of Cambridge, United Kingdom
| | | | | | | |
Collapse
|
49
|
Dytoc MT, Ismaili A, Philpott DJ, Soni R, Brunton JL, Sherman PM. Distinct binding properties of eaeA-negative verocytotoxin-producing Escherichia coli of serotype O113:H21. Infect Immun 1994; 62:3494-505. [PMID: 7518809 PMCID: PMC302983 DOI: 10.1128/iai.62.8.3494-3505.1994] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Infection of humans with verotoxin-producing Escherichia coli (VTEC) O113:H21 is associated with clinical features comparable to those associated with infection with attaching and effacing VTEC strains including those of serotype O157:H7. We have shown previously that the adhesion phenotype of VTEC O157:H7 is influenced by the presence of a homolog of the chromosomal eaeA (for E. coli attaching and effacing) gene. In contrast, by colony blot hybridization, VTEC O113:H21 is negative for the eaeA gene. Therefore, the aim of this study was to define the adhesion phenotype of VTEC O113:H21 strain CL-15 to both cultured epithelial cells (HEp-2) and rabbit intestine in vivo. Under transmission electron microscopy, areas of microvillus effacement were observed in regions directly beneath the organism in CL-15-infected cells both in vitro and in vivo. However, F-actin adhesion pedestals on the host plasma membrane were absent. Failure of CL-15 to induce polymerization of actin was confirmed by using staining of F-actin with fluorescein-labeled phalloidin. Under indirect immunofluorescence microscopy, CL-15-infected HEp-2 cells also failed to demonstrate the recruitment of another cytoskeletal element, alpha-actinin, below foci of bacterial adhesion. In contrast, VTEC O157:H7 infection of HEp-2 cells was associated with increased alpha-actinin immunofluorescence. These findings suggest that bacterial factors distinct from those of EaeA are necessary for the adhesion phenotype of VTEC O113:H21.
Collapse
Affiliation(s)
- M T Dytoc
- Division of Gastroenterology, Hospital for Sick Children, Toronto, Ontario, Canada
| | | | | | | | | | | |
Collapse
|
50
|
Affiliation(s)
- R Soni
- Institute of Biotechnology, University of Cambridge, United Kingdom
| | | |
Collapse
|