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Hassan SA, Aziz DM, Abdullah MN, Bhat AR, Dongre RS, Hadda TB, Almalki FA, Kawsar SMA, Rahiman AK, Ahmed S, Abdellattif MH, Berredjem M, Sheikh SA, Jamalis J. In vitro and in vivo evaluation of the antimicrobial, antioxidant, cytotoxic, hemolytic activities and in silico POM/DFT/DNA-binding and pharmacokinetic analyses of new sulfonamide bearing thiazolidin-4-ones. J Biomol Struct Dyn 2024; 42:3747-3763. [PMID: 37402503 DOI: 10.1080/07391102.2023.2226713] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 05/11/2023] [Indexed: 07/06/2023]
Abstract
In this work, Schiff bases and Thiazolidin-4-ones, were synthesized using Sonication and Microwave techniques, respectively. The Schiff base derivatives (3a-b) were synthesized via the reaction of Sulfathiazole (1) with benzaldehyde derivatives (2a-b), followed by the synthesis of 4-thiazoledinone (4a-b) derivatives by cyclizing the synthesized Schiff bases through thioglycholic acid. All the synthesized compounds were characterized by spectroscopic techniques such as FT IR, NMR and HRMS. The synthesized compounds were tested for their in vitro antimicrobial and antioxidant and in vivo cytotoxicity and hemolysis ability. The synthesized compounds displayed better antimicrobial and antioxidant activity and low toxicity in comparison to reference drugs and negative controls, respectively. The hemolysis test revealed the compounds exhibit lower hemolytic effects and hemolytic values are comparatively low and the safety of compounds is in comparison with standard drugs. Theoretical calculations were carried out by using the molecular operating environment (MOE) and Gaussian computing software and observations were in good agreement with the in vitro and in vivo biological activities. Petra/Osiris/Molinspiration (POM) results indicate the presence of three combined antibacterial, antiviral and antitumor pharmacophore sites. The molecular docking revealed the significant binding affinities and non-bonding interactions between the compounds and Erwinia Chrysanthemi (PDB ID: 1SHK). The molecular dynamics simulation under in silico physiological conditions revealed a stable conformation and binding pattern in a stimulating environment. HighlightsNew series of Thaiazolidin-4-one derivatives have been synthesized.Sonication and microwave techniques are used.Antimicrobial, Antioxidant, cytotoxicity, and hemolysis activities were observed for all synthesized compounds.Molecular Docking and DFT/POM analyses have been predicted.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sangar Ali Hassan
- Department of Chemistry, College of Science, University of Raparin, Sulaymaniyah, Iraq
| | - Dara Muhammed Aziz
- Department of Chemistry, College of Science, University of Raparin, Sulaymaniyah, Iraq
| | | | - Ajmal R Bhat
- Department of Chemistry, R.T.M. Nagpur University, Nagpur, India
| | | | - Taibi Ben Hadda
- Laboratory of Applied Chemistry & Environment, Faculty of Sciences, Mohammed Premier University, Oujda, Morocco
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Faisal A Almalki
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Sarkar M A Kawsar
- Laboratory of Carbohydrate and Nucleoside Chemistry, Department of Chemistry, University of Chittagong, Chittagong, Bangladesh
| | - Aziz Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), University of Madras, Chennai, India
| | - Sumeer Ahmed
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), University of Madras, Chennai, India
| | - Magda H Abdellattif
- Department of Chemistry, College of Science, Taif University, Al-Haweiah, Taif, Saudi Arabia
| | - Malika Berredjem
- Laboratory of Applied Organic Chemistry LCOA, Synthesis of Biomolecules and Molecular Modelling Group, Badji-Mokhtar - Annaba University, Annaba, Algeria
| | - S A Sheikh
- Department of physics, National Institute of Technology, Srinagar, Kashmir, India
| | - Joazaizulfazli Jamalis
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia
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Ahmed S, Bhat AR, Rahiman AK, Dongre RS, Hasan AH, Niranjan V, C L, Sheikh SA, Jamalis J, Berredjem M, Kawsar SMA. Green synthesis, antibacterial and antifungal evaluation of new thiazolidine-2,4-dione derivatives: molecular dynamic simulation, POM study and identification of antitumor pharmacophore sites. J Biomol Struct Dyn 2023:1-17. [PMID: 37768136 DOI: 10.1080/07391102.2023.2258404] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
In this study, a series of thiazolidine-2,4-dione derivatives 3a-i were synthesized and evaluated for antibacterial activity against Gram-positive and Gram-negative strains of Bacillus licheniformis, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. Newly prepared thiazolidine (TZD) derivatives were further screened separately for in vitro antifungal activity against cultures of fungal species, namely, Aspergillus niger, Alternaria brassicicola, Chaetomium murorum, Fusarium oxysporum, Lycopodium sp. and Penicillium notatum. The electron-donating substituents (-OH and -OCH3) and electron-withdrawing substituents (-Cl and -NO2) on the attached arylidene moieties of five-membered heterocyclic ring enhanced the broad spectrum of antimicrobial and antifungal activities. The molecular docking study has revealed that compound 3h strongly interacts with the catalytic residues of the active site of the β-carbonic anhydrase (P. aeruginosa) and has the best docking score. In silico pharmacokinetics studies showed the drug-likeness and non-toxic nature of the synthesized compounds, which indicates the combined antibacterial, antiviral and antitumor pharmacophore sites of the targeted drug. This work demonstrates that potential TZD derivatives bind to different types of bacterial and fungal pathogens for circumventing their activities and opens avenues for the development of newer drug candidates that can target bacterial and fungal pathogens.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sumeer Ahmed
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), University of Madras, Chennai, India
| | - Ajmal R Bhat
- Department of Chemistry, RTM Nagpur University, Nagpur, India
| | - Aziz Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), University of Madras, Chennai, India
| | | | - Aso Hameed Hasan
- Department of Chemistry, College of Science, University of Garmian, Kalar, Iraq
| | - Vidya Niranjan
- Department of Biotechnology, R V College of Engineering, Bengaluru, India
| | - Lavanya C
- Department of Biotechnology, R V College of Engineering, Bengaluru, India
| | - S A Sheikh
- Department of Physics, National Institute of Technology, Srinagar, Kashmir, India
| | - Joazaizulfazli Jamalis
- Faculty of Science, Department of Chemistry, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Malika Berredjem
- Laboratory of Applied Organic Chemistry LCOA, Synthesis of Biomolecules and Molecular Modelling Group, Badji-Mokhtar - Annaba University, Annaba, Algeria
| | - Sarkar M A Kawsar
- Laboratory of Carbohydrate and Nucleoside Chemistry (LCNC), Department of Chemistry, Faculty of Science, University of Chittagong, Chittagong, Bangladesh
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Bhat JA, Bhat TA, Sheikh SA, Wani ZA, Ara R. Status of 25-hydroxy vitamin D level in simple febrile seizures and its correlation with recurrence of seizures. Avicenna J Med 2020; 10:6-9. [PMID: 32110543 PMCID: PMC7014999 DOI: 10.4103/ajm.ajm_57_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Background: Febrile seizures are associated with a lot of modifiable and nonmodifiable risk factors. Extensive research is currently going on to discover more and more risk factors of febrile seizures, so that they can be modified to decrease their incidence and recurrence. Aims and Objectives: The aim of this study was to determine the status of 25-hydroxy vitamin D in children presented with simple febrile seizures and to find its correlation with recurrence of seizures. Materials and Methods: This prospective observational study was conducted on 223 children of age group 7–59 months who presented with simple febrile seizures. 25-hydroxy vitamin D were sent to laboratory for quantitative estimation. All data were recorded, status of vitamin D in these children was analyzed, and statistical significance of correlation of vitamin D with the number of recurrent seizure episodes was derived. Statistical Analysis: The comparison among groups was carried out by analysis of variance and correlation was conducted by Pearson’s correlation analysis. A value of P < 0.05 was considered statistically significant. Results: 25-hydroxy vitamin D insufficiency was present in 43.5% of the children, deficiency in 30.85 %, and normal level in 25.56% of children who had simple febrile seizures. Majority of the children presented with recurrent episodes of seizures had vitamin D deficiency followed by insufficiency and normal level. Comparison of Vitamin D showed significant negative correlation (As vitamin D level increases frequency of seizure febrile seizure recurrence decreases and vice versa) with recurrence of simple febrile seizures. Conclusion: Deficiency of vitamin D is associated significantly with simple febrile seizures and their recurrence is negatively correlated with it.
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Affiliation(s)
- Jehangir A Bhat
- Department of Paediatrics, World college of Medical sciences and research institute, Haryana, India
| | - Tasleem Arif Bhat
- Department of Paediatrics, Government Medical College Srinagar, Srinagar, Jammu and Kashmir, India
| | - Sajad A Sheikh
- Department of Gastroenterology, Vikas Hospital Private Limited, Najafgarh, New Delhi, India
| | - Zubair A Wani
- Department of Paediatrics, Government Medical College Srinagar, Srinagar, Jammu and Kashmir, India
| | - Roshan Ara
- Department of Medicine, Vikas hospital private Limited Najafgarh, New Delhi, India
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Yousaf S, Sheikh SA, Riazuddin S, Waryah AM, Ahmed ZM. INPP5K variant causes autosomal recessive congenital cataract in a Pakistani family. Clin Genet 2018; 93:682-686. [PMID: 28940338 DOI: 10.1111/cge.13143] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/09/2017] [Accepted: 09/17/2017] [Indexed: 11/30/2022]
Abstract
Congenital cataract (CC) is clinically and genetically highly heterogeneous. Here, we enrolled a consanguineous kindred (LUCC15) from Pakistan, with 3 affected individuals suffering with CC. Exome sequencing revealed a transition mutation [c.149 T > C; p.(Ile50Thr)] in INPP5K. Inositol polyphosphate-5-phosphatase K, encoded by INPP5K, is involved in dephosphorylation of phosphatidylinositol (PtdIns) 4,5-bisphosphate, and PtdIns 3,4,5-trisphosphate. Recently, pathogenic variants in INPP5K have been reported in families with congenital muscular dystrophies, intellectual disability, and cataract. In our family LUCC15, mild to moderate intellectual disability along with speech impairment was observed in 2 affected individuals. Magnetic resonance imaging of brain and muscles tissues did not reveal any cerebellar or muscular atrophy. However, electromyography of both upper and lower limbs revealed irritable myopathy. Comparison of clinical phenotype of all the known affected individuals, including LUCC15 family, homozygous for INPP5K alleles revealed reduced penetrance of muscular dystrophy and intellectual disability. Similarly, skeletal muscle abnormalities were highly variable among inpp5ka zebrafish mutants analyzed in this study. These phenotypic variabilities may be due to epigenetic factors and/or genetic modifiers.
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Affiliation(s)
- S Yousaf
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine University of Maryland, Baltimore, Maryland
| | - S A Sheikh
- Molecular Biology & Genetics Department, Liaquat University of Medical & Health Sciences, Jamshoro, Pakistan
| | - S Riazuddin
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine University of Maryland, Baltimore, Maryland
| | - A M Waryah
- Molecular Biology & Genetics Department, Liaquat University of Medical & Health Sciences, Jamshoro, Pakistan
| | - Z M Ahmed
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine University of Maryland, Baltimore, Maryland
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Mir NA, Tyagi PK, Biswas AK, Tyagi PK, Mandal AB, Sheikh SA, Deo C, Sharma D, Verma AK. Impact of feeding chromium supplemented flaxseed based diet on fatty acid profile, oxidative stability and other functional properties of broiler chicken meat. J Food Sci Technol 2017; 54:3899-3907. [PMID: 29085132 DOI: 10.1007/s13197-017-2846-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 06/20/2017] [Accepted: 08/31/2017] [Indexed: 11/29/2022]
Abstract
A total of 240 broiler chicken of same hatch with uniform weight were used in a biological experiment with completely randomized design to investigate the effects of incorporating organic chromium (Cr) in flaxseed meal based diet on the fatty acid profile, oxidative stability and functional properties of broiler chicken meat. Five diets were formulated as per the recommendations of BIS (Nutrient requirements for poultry 13: 9863, Bureau of Indian Standards, New Delhi, 1992) in which flaxseed meal was used to replace 10% of soyabean in basal diet and four levels of Cr (0.0, 0.5, 1.0 and 1.5 mg/kg diet) as Cr-picolinate were used. The results revealed that flaxseed feeding significantly increased the percentage of unsaturated fatty acids, including MUFA, PUFA, ω-3, ω-6 fatty acids and ω-3:ω-6 and PUFA:SFA ratios, whereas, significant decline was seen in saturated fatty acids and no effect of Cr was observed on the fatty acid profile of broiler chicken. Flaxseed feeding significantly reduced the cholesterol and fat percentage of meat, whereas, significant progressive reduction was observed with increasing Cr levels. The combination of 10% flaxseed with 1.0 mg Cr/kg diet increased the final pH of broiler meat. The addition of flaxseed significantly reduced water holding capacity, extract release volume and antioxidant potential of broiler meat, whereas, increasing Cr supplementation progressively increased them. Flaxseed feeding significantly increased the drip loss and lipid peroxidation of broiler meat, whereas, Cr supplementation decreased them. It was concluded that inclusion of 10% flaxseed and 1.5 mg Cr/kg diet results in desirable fatty acid profile, oxidative stability and functional properties of broiler chicken meat.
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Affiliation(s)
- Nasir Akbar Mir
- Division of Avian Nutrition and Feed Technology, Central Avian Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - Praveen K Tyagi
- Division of Avian Nutrition and Feed Technology, Central Avian Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - A K Biswas
- Division of Post-Harvest Technology, Central Avian Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - Pramod K Tyagi
- Division of Avian Nutrition and Feed Technology, Central Avian Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - A B Mandal
- Division of Avian Nutrition and Feed Technology, Central Avian Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - Sajad A Sheikh
- Division of Avian Nutrition and Feed Technology, Central Avian Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - Chandra Deo
- Division of Avian Nutrition and Feed Technology, Central Avian Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - Divya Sharma
- Division of Avian Nutrition and Feed Technology, Central Avian Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122 India
| | - A K Verma
- Central Institute for Research on Goats, Makhdoom, Farah, Mathura, Uttar Pradesh 281122 India
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Bhat SA, Bhushan B, Sheikh SA, Chandrasekar T, Godara AS, Bharti P, Japheth KP. Effect of infrared lamps to ameliorate cold stress in Vrindavani calves. Vet World 2016; 8:777-82. [PMID: 27065647 PMCID: PMC4825282 DOI: 10.14202/vetworld.2015.777-782] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 05/16/2015] [Accepted: 05/23/2015] [Indexed: 11/23/2022] Open
Abstract
Aim: This study was conducted to determine the effect of infrared lamps to ameliorate cold stress in Vrindavani (Holstein Friesian × Brown Swiss × Jersey × Hariana) calves. Materials and Methods: For the present investigation, ten newborn Vrindavani calves were randomly divided into two groups (G1 and G2) of five each. The experiment was conducted from 2nd November to 8th February when the environmental temperature was at the lowest. The calves of G1 were provided with no additional protection while the calves of G2 were protected against the cold weather by providing heat using the infrared lamps. The body weight (kg) of the calves was recorded at weekly interval. The blood samples collected within 6 h of birth and then at fortnightly interval were analyzed for packed cell volume (PCV, %), hemoglobin (Hb, g/dl). Besides, the serum biochemical parameters, viz., Total serum protein (TSP, g/l), albumin (g/l), globulin (g/l), albumin globulin ratio (A:G) and important stress parameters, viz., triiodothyronine (T3, ng/ml), thyroxine (T4, ng/ml) and cortisol (ng/ml) were also estimated. Results: The calves of G2 showed higher body weight gain as compared to G1. The differences were found to be highly significant (p<0.01). The calves in G1 showed comparatively higher values of PCV and Hb and the differences were found to be significant (p<0.05) on 45th day for PCV and highly significant (p<0.01) on 60th day for PCV and on 45th day for Hb. The values of TSP and albumin were comparatively higher in calves of G1 as compared to G2 and the differences were highly significant (p<0.01) on 45th day for both TSP and albumin and significant (p<0.05) on 60th day for albumin. Significantly (p<0.01) higher values of cortisol and T4 were observed on 15 and 45th day in calves of G1 as compared to G2. The T3 levels were also found higher in calves of G1 than G2 and the differences were significant (p<0.05) on 15 and 30th day and highly significant (p<0.01) on 45th day of the study. Conclusion: Based on the results, it could be concluded that the infrared lamps are efficient in providing favorable microclimate and hence can be effectively used in calf shed to protect newborn calves from adverse conditions of winter and to improve their body growth performance.
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Affiliation(s)
- Showkat A Bhat
- Livestock Production and Management Section, National Dairy Research Institute, Karnal, Haryana, India
| | - Bharat Bhushan
- Division of Animal Genetics, Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - Sajad A Sheikh
- Division of Poultry Science, Central Avian Research Institute, Izatnagar, Uttar Pradesh, India
| | - T Chandrasekar
- Livestock Production and Management Section, National Dairy Research Institute, Karnal, Haryana, India
| | - Asu Singh Godara
- Livestock Production and Management Section, Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - Pranay Bharti
- Livestock Production and Management Section, National Dairy Research Institute, Karnal, Haryana, India
| | - K Puhle Japheth
- Livestock Production and Management Section, National Dairy Research Institute, Karnal, Haryana, India
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Al-Mogairen SM, Al Sheikh A, Husain S, Al Arfaj AS, Al Swat K, Hamdani M, Hefnawy M, Al Mohimed B, Al Hammad AW, Adam M, Gad El Rab MO, Sheikh SA, Meo SA. Effect of exposure to silica in inducing autoimmune hepatitis: an experimental animal-controlled study. Eur Rev Med Pharmacol Sci 2015; 19:3881-3885. [PMID: 26531274] [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: 06/05/2023]
Abstract
OBJECTIVE The aim of this experimental study is to investigate the effect of subcutaneous and oral sodium silicate in inducing the autoimmune hepatitis. MATERIALS AND METHODS Twelve Brown Norway rats were studied, six rats were challenged with Sodium Silicate and the rest were challenged with normal saline as a control group. At 14th week post-sodium silicate or normal saline exposure, the rats were sacrificed. Histopathological studies were conducted in six positive autoantibodies responding silicate group rats and then compared with an equal number of negative autoantibodies responding control rats. RESULTS The liver findings from sodium silicate group of animals showed a histopathological reaction in 3/6 (50%) compared with 0/6 of the corresponding control saline group (p = 0.09). However, the absolute differences in the percentage between the two groups was 50%, the subcutaneous sodium silicate sub-group showed hepatic tissue response close to being statistically significant level (p = 0.05). CONCLUSIONS After correlating the results with autoantibodies including serum antinuclear antibodies and anti ribo-nucleoprotein response of the same rats, it is concluded that sodium silicate play a role in inducing the autoimmune hepatitis in a genetically susceptible rat model.
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Affiliation(s)
- S M Al-Mogairen
- Rheumatology Division, Department of Medicine, Department of Pathology, Hepatology Division, Department of Medicine, Department of Pharmacology, Department of Biochemistry, Department of Immunology, Department of Family and Community Medicine, Department of Physiology; College of Medicine, King Saud University, Riyadh, Saudi Arabia.
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Meo SA, Memon AN, Sheikh SA, Rouq FA, Usmani AM, Hassan A, Arian SA. Effect of environmental air pollution on type 2 diabetes mellitus. Eur Rev Med Pharmacol Sci 2015; 19:123-128. [PMID: 25635985] [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: 06/04/2023]
Abstract
OBJECTIVE Air pollution is a novel risk factor for insulin resistance and occurrence of type 2 diabetes mellitus (T2DM), but the evidence is limited and diverse. Therefore, the aim of this study was to assess the effect of environmental air pollution on incidence of type 2 diabetes mellitus. METHODS In this study, we identified 102 published studies through a systematic data base search including ISI-Web of Science, EMBASE and PubMed. We searched the related literature by using the key terms including diabetes mellitus, air pollution, occupational and environmental pollution, gaseous, NO2, particulate matter pollutants PM2.5, and PM10. Studies in which diabetes mellitus, insulin resistance, air pollution, occupational and environmental pollution was discussed were included in the study. No confines on publication status, study design or language of publication were considered. Descriptive and quantitative information were extracted from the selected literature. Finally we included 21 publications and remaining studies were excluded. RESULTS Air pollution is a leading cause of insulin resistance and incidence of type 2 diabetes mellitus. The association between air pollution and diabetes is stronger for traffic associated pollutants, gaseous, nitrogen dioxide, tobacco smoke and particulate matter. CONCLUSIONS Exposure to air pollutants is significantly associated with increased risk of type 2 diabetes mellitus. It is suggested that, environmental protection officials must take high priority steps to minimize the air pollution, hence to decrease the incidence of type 2 diabetes mellitus.
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Affiliation(s)
- S A Meo
- Department of Physiology, Pharmacology, University Diabetes Centre; College of Medicine, King Saud University, Riyadh, Saudi Arabia.
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Pardo JV, Sheikh SA, Kuskowski MA, Surerus-Johnson C, Hagen MC, Lee JT, Rittberg BR, Adson DE. Weight loss during chronic, cervical vagus nerve stimulation in depressed patients with obesity: an observation. Int J Obes (Lond) 2007; 31:1756-9. [PMID: 17563762 PMCID: PMC2365729 DOI: 10.1038/sj.ijo.0803666] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Fourteen patients were treated over 2 years with cervical vagus nerve stimulation (VNS) for adjunctive therapy of severe, treatment-resistant depression. Here, we report the serendipitous observation that this treatment was associated with highly significant, gradual weight loss despite the patients' report of not dieting or exercising. The weight loss was proportional to the initial BMI, that is, the more severe the obesity, the greater the weight loss. Weight loss did not correlate with changes in mood symptoms. The vagus nerve carries visceral information to and from the brain; modulation of its activity may alter eating behavior. Chronic cervical VNS may merit controlled study for the treatment of severe obesity.
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Affiliation(s)
- J V Pardo
- Cognitive Neuroimaging Unit (11P), Psychiatry Service, Veterans Affairs Medical Center, Minneapolis, MN 55417, USA.
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Abstract
BACKGROUND In developing countries, patients with infective endocarditis are referred late, there is low yield of blood cultures and incidence of rheumatic heart disease is still high. OBJECTIVE Evaluate clinical pattern, assess diagnostic criteria in our settings and determine outcome. SETTING A tertiary referral center for paediatric and adult cardiology. PATIENTS AND METHODS All children with infective endocarditis admitted to a single center from April 1997 to March 2000 were analysed. The diagnosis was based on Duke's criteria, which proposed two major and six minor criteria. Minor criteria were expanded to include raised acute phase reactants and presence of newly diagnosed or increasing splenomegally. The patients were stratified as definite, possible and rejected cases. RESULTS Of 1402 hospital admissions, 45 patients fulfilled the diagnostic criteria for infective endocarditis giving an incidence of 32 per 1000 hospital admissions. The mean age was 7.9 +/- 4 years (4 months to 16 years) with only two patients under 1 year of age. Rheumatic heart disease was the underlying lesion in 24 patients (53%) while congenital heart lesions occurred in 20 patients (45%). Previous antibiotic treatment was given in 26 patients (58%) definitely. Blood cultures were positive in 21 patients (47%); Streptococcus Viridans being the most common organism, while vegetations on echocardiography were present in 32 patients (71%). Surgery was undertaken in four patients and five patients left against medical advise. Of 10 patients with aortic valve involvement, there were three deaths (30%) and overall mortality was 13% (six patients). CONCLUSIONS The incidence of infective endocarditis is 32 per 1000 (3.2%) hospital admissions in a tertiary paediatric cardiology referral center. Rheumatic heart disease is still the most common underlying heart lesion. Blood cultures are positive in less than 50% of cases and echocardiography in expert hands is a more sensitive tool in our set up. Mortality is still high and aortic valve involvement in particular, carried poor prognosis.
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Affiliation(s)
- M Sadiq
- Department of Paediatric Cardiology, Punjab Institute of Cardiology, Lahore, Pakistan.
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Old RW, Sheikh SA, Chambers A, Newton CA, Mohammed A, Aldridge TC. Individual Xenopus histone genes are replication-independent in oocytes and replication-dependent in Xenopus or mouse somatic cells. Nucleic Acids Res 1985; 13:7341-58. [PMID: 4059058 PMCID: PMC322048 DOI: 10.1093/nar/13.20.7341] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
We have assessed the response of many histone H3 mRNAs and an H1C mRNA in Xenopus tissue culture cells after treatment with the DNA synthesis inhibitor hydroxyurea. The amount of the histone mRNAs falls rapidly in response to the inhibitor. This response is prevented by cycloheximide. Cloned Xenopus histone genes were transfected into mouse cells and a cell line was obtained in which the Xenopus genes were actively expressed giving rise to mRNA with correct 5'-termini. The Xenopus genes were correctly regulated at the level of mRNA amounts in the mouse cell line. Nuclear microinjection experiments with Xenopus oocytes and S1 nuclease analysis of normal ovary RNA showed that the H1C gene, and probably also two H3 genes, which are replication-dependent in somatic cells are expressed in oocytes and are therefore replication-independent in this cell type. The same promoters are used in both replication-dependent and independent expression.
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