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Ali MM, Baig MT, Huma A, Ibrahim S, Khan SA, Fatima R, Majeed S, Rawat A, Soomro H, Lodhi M, Jabeen A, Syed N, Huda A. Effect of Agaricus blazei Murill on exploratory behavior of mice-model. BRAZ J BIOL 2021; 84:e252575. [PMID: 34932635 DOI: 10.1590/1519-6984.252575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/18/2021] [Indexed: 11/22/2022] Open
Abstract
Increased anxiety and depressive symptoms have reported to be its association with long term illness. Because of having unwanted effects of newly available drugs, patients administering anxiolytic drugs usually discontinue the treatment before they are completely recovered. Therefore, there is a serious need to develop new anxiolytic drugs. The anxiolytic effect of hydro-alcoholic extract of Agaricus blazei in animal models was assessed. 24 male mice (Mus musculus genus) were included in the study. Four groups were prepared and each group contained six animals. The groups were vehicle control, positive control (diazepam 1.0 mg/kg, i.p.) as well as two treatment groups receiving Agaricus blazei hydro-alcoholic extract at a dose of 136.50 mg/kg and 273.0 mg/kg orally. The Marble burying test, Nestlet shredding test and Light and Dark box test used to assess anxiolytic activity. Mice administered with diazepam 1.0 mg/kg, i.p. while hydro-alcoholic extract of AbM (136.50 and 273.0 mg/kg, respectively) was administered via oral route which exhibited marked reduction in number of marbles-burying as compared to vehicle control group. Mice administered with diazepam 1.0 mg/kg, i.p. and Oral administration of hydro-alcoholic extract of AbM (136.50 and 273.0 mg/kg, respectively) exhibited significant decrease in nestlet shredding in comparison to vehicle control group. The oral administration of hydro-alcoholic extract at a dose of 136.5mg/kg and 273mg/kg showed elevation in time spent in light box and was comparable to standard treated group while time spent by mice following oral administration of hydro-alcoholic extract of Agaricus blazei at a dose of 273.0 mg/kg also showed elevation and was found to be more near to standard treated group (diazepam 1 mg/kg, i.p.).
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Affiliation(s)
- M M Ali
- Ziauddin University, Faculty of Pharmacy, Department of Pharmaceutics, Karachi, Pakistan
| | - M T Baig
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacy Practice, Karachi, Pakistan
| | - A Huma
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacognosy, Karachi, Pakistan
| | - S Ibrahim
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacology, Karachi, Pakistan
| | - S A Khan
- Memon Medical Institute Hospital, Karachi, Pakistan
| | - R Fatima
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacy Practice, Karachi, Pakistan
| | - S Majeed
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacology, Karachi, Pakistan
| | - A Rawat
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacy Practice, Karachi, Pakistan
| | - H Soomro
- Ziauddin University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Karachi, Pakistan
| | - M Lodhi
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacology, Karachi, Pakistan
| | - A Jabeen
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacology, Karachi, Pakistan
| | - N Syed
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacy Practice, Karachi, Pakistan
| | - A Huda
- Sante Pharma (Pvt) Ltd, Karachi, Pakistan
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Ali K, Iqbal A, Bukhari SM, Safdar S, Raiz A, Ali W, Hussain A, Javid A, Hussain M, Ali MM, Mahmud A, Iqbal MJ, Nasir MF, Mubeen I, Kanwal S, Sughra F, Khattak A, Saleem M. Amelioration potential of Moringa oleifera extracts against sodium arsenate induced embryotoxicity and genotoxicity in mouse (Mus musculus). BRAZ J BIOL 2021; 83:e248022. [PMID: 34468531 DOI: 10.1590/1519-6984.248022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/09/2021] [Indexed: 11/21/2022] Open
Abstract
Previous studies have suggested that arsenic crosses the placenta and affects the fetus development. The study under consideration aims to show comparative ameliorative effect of Moringa oleifera leaf and flower extracts against sodium arsenate induced fetus toxicity of mice. Pregnant mice (N=44) were kept in lab and divided into eleven group from (A to K) and were orally administered the doses 6 mg/kg, 12 mg/kg for sodium arsenate, 150 mg/kg and 300 mg/kg for Moringa oleifera leaf extracts (MOLE) and 150 mg/kg and 300 mg/kg for Moringa oleifera flower extracts (MOFE) comparing with control. The investigation revealed evident reduction in the fetuses weight, hind limb, fore limb, tail and snout length, crown rump and head circumferences well as malformations in tail, feet, arms, legs, skin and eyes in the negative control group (only administered with sodium arsenate). Co-administration of sodium arsenate with MOLE and MOFE ameliorate the reversed effect of sodium arsenate on the shape, length, body weight and DNA damage of fetus significantly at 95% confidence interval. However, Moringa oleifera leaf extract showed more significant results in comparison to Moringa oleifera flower extract. Hence concluded that Moringa oleifera leaf extract ameliorated the embryo toxic effects of sodium arsenate and can be used against environmental teratogens.
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Affiliation(s)
- K Ali
- University of Veterinary & Animal Sciences, Department of Wildlife & Ecology, Lahore, Pakistan
| | - A Iqbal
- University of Veterinary & Animal Sciences, Department of Wildlife & Ecology, Lahore, Pakistan
| | - S M Bukhari
- University of Veterinary & Animal Sciences, Department of Wildlife & Ecology, Lahore, Pakistan
| | - S Safdar
- University of Veterinary & Animal Sciences, Department of Wildlife & Ecology, Lahore, Pakistan
| | - A Raiz
- Department of Zoology, GC Women University, Faisalabad, Pakistan
| | - W Ali
- University of Veterinary & Animal Sciences, Department of Wildlife & Ecology, Lahore, Pakistan
| | - A Hussain
- University of Veterinary & Animal Sciences, Department of Wildlife & Ecology, Lahore, Pakistan
| | - A Javid
- University of Veterinary & Animal Sciences, Department of Wildlife & Ecology, Lahore, Pakistan
| | - M Hussain
- University of Veterinary & Animal Sciences, Department of Wildlife & Ecology, Lahore, Pakistan
| | - M M Ali
- University of Veterinary & Animal Sciences, Institute of Biochemistry and Biotechnology, Lahore, Pakistan
| | - A Mahmud
- University of Veterinary & Animal Sciences, Department of Poultry Production, Lahore, Pakistan
| | - M J Iqbal
- Bahauddin Zakariya University, Department of Zoology, Multan, Pakistan
| | - M F Nasir
- Bahauddin Zakariya University, Department of Zoology, Multan, Pakistan
| | - I Mubeen
- Government College University, Department of Zoology, Lahore, Pakistan
| | - S Kanwal
- University of Okara, Department of Zoology, Okara, Pakistan
| | - F Sughra
- University of Education, Department of Zoology, Division of Science & Technology, Lahore, Pakistan
| | - A Khattak
- Department of Bioinformatics, Shaheed Benazir Bhutto Women University, Peshawar, Pakistan
| | - M Saleem
- Department of Zoology, Virtual University of Lahore, Lahore, Pakistan
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Ali MM, Grønvold B, Remberger M, Abrahamsen IW, Myhre AE, Tjønnfjord GE, Fløisand Y, Gedde-Dahl T. Addition of Anti-thymocyte Globulin in Allogeneic Stem Cell Transplantation With Peripheral Stem Cells From Matched Unrelated Donors Improves Graft-Versus-Host Disease and Relapse Free Survival. Clin Lymphoma Myeloma Leuk 2021; 21:598-605. [PMID: 34158268 DOI: 10.1016/j.clml.2021.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/29/2021] [Accepted: 05/03/2021] [Indexed: 11/25/2022]
Abstract
Anti-thymocyte globulin (ATG) is commonly used to prevent graft-versus-host disease (GvHD) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). To evaluate the impact of ATG as part of the GvHD prophylaxis in our institution, we report the outcome of 415 patients with matched unrelated donors (MUD) transplanted for hematological malignancies with or without ATG from 2005 to 2019 at Oslo University Hospital, Norway. The following groups were compared: (1) 154 patients transplanted with peripheral blood stem cells (PBSC) without ATG 2005-2014. (2) 137 patients transplanted with bone marrow stem cells (BMSC) 2005-2019. (3) 124 patients transplanted with PBSC and ATG (PBSC + ATG) 2014-2019. Three years survival was similar in the groups, 61% following allografting with PBSC, 54% with BMSC, and 59% with PBSC + ATG. Acute GvHD grade III-IV was 14%, 14%, and 7%; chronic GvHD was 81%, 32, and 26%; and extensive cGvHD 44%, 15%, and 6% in the corresponding groups. Both acute and chronic GvHD were significantly reduced in the PBSC + ATG-versus the PBSC group (p < 0.05 and p < 0.001 respectively).Transplant-related mortality (TRM) was 33%, 25%, and 17% (p = 0.18). Graft versus host disease and relapse free survival (GRFS) at 3 years was 43 %, 43%, and 64% in the groups. Adding ATG to the GvHD prophylaxis regimen of MUD allo-HSCT with PBSC resulted in a substantial reduction of both acute and chronic GvHD without compromising the disease control, reflected in a superior 3 years GRFS.
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Affiliation(s)
- M M Ali
- Department of Haematology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Norway.
| | - B Grønvold
- Department of Haematology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Norway
| | - M Remberger
- Department of Haematology, Oslo University Hospital, Oslo, Norway; Department of Medical Sciences, Uppsala University and KFUE, Uppsala University Hospital, Uppsala, Sweden
| | - I W Abrahamsen
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - A E Myhre
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - G E Tjønnfjord
- Department of Haematology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Norway
| | - Y Fløisand
- Centre for Cancer Cell Reprogramming, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; The Clatterbridge Cancer Center NHS Foundation Trust, Liverpool, United Kingdom
| | - T Gedde-Dahl
- Department of Haematology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Norway
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Bilal RMH, Saeed MA, Choudhury PK, Baqir MA, Kamal W, Ali MM, Rahim AA. Elliptical metallic rings-shaped fractal metamaterial absorber in the visible regime. Sci Rep 2020; 10:14035. [PMID: 32820192 PMCID: PMC7441161 DOI: 10.1038/s41598-020-71032-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 07/09/2020] [Accepted: 08/05/2020] [Indexed: 12/22/2022] Open
Abstract
Achieving the broadband response of metamaterial absorbers has been quite challenging due to the inherent bandwidth limitations. Herein, the investigation was made of a unique kind of visible light metamaterial absorber comprising elliptical rings-shaped fractal metasurface using tungsten metal. It was found that the proposed absorber exhibits average absorption of over 90% in the visible wavelength span of 400-750 nm. The features of perfect absorption could be observed because of the localized surface plasmon resonance that causes impedance matching. Moreover, in the context of optoelectronic applications, the absorber yields absorbance up to ~ 70% even with the incidence obliquity in the range of 0°-60° for transverse electric polarization. The theory of multiple reflections was employed to further verify the performance of the absorber. The obtained theoretical results were found to be in close agreement with the simulation results. In order to optimize the results, the performance was analyzed in terms of the figure of merit and operating bandwidth. Significant amount of absorption in the entire visible span, wide-angle stability, and utilization of low-cost metal make the proposed absorber suitable in varieties of photonics applications, in particular photovoltaics, thermal emitters and sensors.
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Affiliation(s)
- R M H Bilal
- Faculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, 23640, Pakistan
| | - M A Saeed
- Division of Electronics and Electrical Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - P K Choudhury
- Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia.
| | - M A Baqir
- Department of Electrical and Computer Engineering, COMSATS University Islamabad, Sahiwal, 57000, Pakistan
| | - W Kamal
- Department of Engineering Sciences, University of Oxford, Park Road, Oxford, OX1 3PJ, UK
| | - M M Ali
- Department of Electronic and Computer Engineering, University of Limerick, Limerick, V94 T9PX, Ireland
| | - A A Rahim
- Faculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, 23640, Pakistan
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Grønvold B, Ali MM, Remberger M, Mattsson J, Egeland T, Lundin KU, Myhre AE, Abrahamsen IW, Heldal D, Dybedal I, Tjønnfjord GE, Fløisand Y, Gedde-Dahl T. HLA-DPB1 mismatch reduce relapse and improve survival in T-cell replete unrelated donor allogeneic stem cell transplantation. Bone Marrow Transplant 2020; 55:1658-1661. [PMID: 32054997 DOI: 10.1038/s41409-020-0827-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 01/16/2020] [Accepted: 02/03/2020] [Indexed: 11/09/2022]
Affiliation(s)
- B Grønvold
- Department of Haematology, Oslo University Hospital, Oslo, Norway.
| | - M M Ali
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - M Remberger
- Department of Haematology, Oslo University Hospital, Oslo, Norway.,Department of Medical Sciences, Uppsala University and KFUE, Uppsala University Hospital, Uppsala, Sweden
| | - J Mattsson
- Gloria and Seymour Epstein Chair in Cell Therapy and Transplantation, Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - T Egeland
- Institute of Immunology, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - K U Lundin
- Institute of Immunology, Oslo University Hospital, Oslo, Norway
| | - A E Myhre
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - I W Abrahamsen
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - D Heldal
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - I Dybedal
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - G E Tjønnfjord
- Department of Haematology, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Y Fløisand
- Department of Haematology, Oslo University Hospital, Oslo, Norway.,Centre for Cancer Cell Reprogramming, Department of Molecular Cell Biology, Oslo University Hospital, Oslo, Norway
| | - T Gedde-Dahl
- Department of Haematology, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Iqbal A, Nawaz S, Javid A, Gulraiz S, Khan MKA, Rashid M, Noor T, Khan M, Ali MM. Comparative performance-based studies of second generation anticoagulant rodenticides bromadiolone and flocoumafen in Mus musculus. J BIOL REG HOMEOS AG 2019; 34:03. [PMID: 31845562 DOI: 10.23812/19-459-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- A Iqbal
- Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - S Nawaz
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - A Javid
- Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - S Gulraiz
- Department of Chemistry, Government Postgraduate College for Women, Gulberg, Lahore, Pakistan
| | - M K A Khan
- Department of Zoology, University of Okara, Okara, Pakistan
| | - M Rashid
- Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - T Noor
- Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - M Khan
- Department of Zoology, University of the Punjab, Lahore, Pakistan
| | - M M Ali
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Kurnianingsih N, Ratnawati R, Fatchiyah F, Barlianto W, Ali MM, Safitri A, Suyanto E. The Difference of Amino Acid Profiling From Two Morphological Purple Sweet Potatoes From Kawi Mountain Cultivars, East Java, Indonesia. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1742-6596/1374/1/012017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Akther M, Tabrez MS, Ali MM, Dey PR, Hoque M, Alam ST. Prevalence and Common Risk Factors of Hypertension among School Children Aged 12-16 Years in Sylhet Metropolitan City, Bangladesh. Mymensingh Med J 2019; 28:819-825. [PMID: 31599246] [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: 06/10/2023]
Abstract
Hypertension is a common disease associated with high mortality and morbidity. Hypertension could have its origin in childhood and go undetected unless specially looked for during this period. With globalization bringing more lifestyle modifications, adolescents are exposed to multiple risk factors including obesity, diet, academic stress, lack of physical work apart from hereditary risk factors. Early diagnosis of hypertension is an important strategy in its control, effective treatment and prevention of complications. This cross sectional descriptive study was conducted in the Department of Paediatrics, Sylhet MAG Osmani Medical College Hospital, Sylhet during the period from January 2014 to June 2014. One thousand (1000) school children aged 12-16 years in Sylhet Metropolitan City were included according to inclusion and exclusion criteria. Inclusion criteria were all school children aged 12-16 years in Sylhet Metropolitan City. School children aged under 12 or above 16 years and with any systemic disorder were excluded. This study showed that prevalence of hypertension in school going children of Sylhet city was 0.70% and there was a significant relationship of hypertension with the obesity, family history of hypertension, dietary habit and physical activity. Among 7 (seven) hypertensive children, 3(42.8%) were over weight and 3(42.8%) obese (p=0.001). All of 7(100%) children had family history of hypertension (p=0.001). Dietary habit were found healthy in 1(14.3%) and unhealthy in 6(85.7%) (p=0.001). Among 7 positive respondent, 6(85.7%) was sedentary working and 1(14.3%) was inactive (p=0.001). While waist hip ratio among those, 2(28.6%) were excellent and 5(71.4%) were average; was not significant (p=0.745). Prevalence of hypertension in apparently healthy school going children of Sylhet city was 0.70% and this had a strong relationship with obesity, family history of hypertension, dietary habit and physical activity.
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Affiliation(s)
- M Akther
- Dr Mahboba Akther, MD Neonatology Phase B Resident, Department of Neonatology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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Ali MM, Ihsan MA, Zafar H, Rauf QA, Akhtar MK. Brassinosteroid biosynthesis, stress resistance in plants, and application of brassinosteroids in plant biotechnology. J BIOL REG HOMEOS AG 2018; 32:1457-1459. [PMID: 30574750] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Brassinosteroids (BRs) are newly discovered plant hormones that protect the plants from biotic and abiotic stress. Plants produce these hormones at all times, however, the quantity and location of their production vary. It has been demonstrated that BRs help the plants to regulate their response to stress conditions and make them more resistant to pest attack, extreme hot or cold environment, water scarcity, and salinity, among other types of stress. Manipulation of genes involved in the synthesis of BRs in different plants is a feasible strategy for genetic improvement of crop production and stress tolerance.
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Affiliation(s)
- M M Ali
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animals Sciences, Lahore, Pakistan
| | - M A Ihsan
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animals Sciences, Lahore, Pakistan
| | - H Zafar
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animals Sciences, Lahore, Pakistan
| | - Q A Rauf
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animals Sciences, Lahore, Pakistan
| | - M K Akhtar
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animals Sciences, Lahore, Pakistan
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Venugopal T, Ali MM, Bourassa MA, Zheng Y, Goni GJ, Foltz GR, Rajeevan M. Statistical Evidence for the Role of Southwestern Indian Ocean Heat Content in the Indian Summer Monsoon Rainfall. Sci Rep 2018; 8:12092. [PMID: 30108244 PMCID: PMC6092415 DOI: 10.1038/s41598-018-30552-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 01/09/2018] [Accepted: 07/25/2018] [Indexed: 12/05/2022] Open
Abstract
This study examines the benefit of using Ocean Mean Temperature (OMT) to aid in the prediction of the sign of Indian Summer Monsoon Rainfall (ISMR) anomalies. This is a statistical examination, rather than a process study. The thermal energy needed for maintaining and intensifying hurricanes and monsoons comes from the upper ocean, not just from the thin layer represented by sea surface temperature (SST) alone. Here, we show that the southwestern Indian OMT down to the depth of the 26 °C isotherm during January–March is a better qualitative predictor of the ISMR than SST. The success rate in predicting above- or below-average ISMR is 80% for OMT compared to 60% for SST. Other January–March mean climate indices (e.g., NINO3.4, Indian Ocean Dipole Mode Index, El Niño Southern Oscillation Modoki Index) have less predictability (52%, 48%, and 56%, respectively) than OMT percentage deviation (PD) (80%). Thus, OMT PD in the southwestern Indian Ocean provides a better qualitative prediction of ISMR by the end of March and indicates whether the ISMR will be above or below the climatological mean value.
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Affiliation(s)
- T Venugopal
- Department of Physics, Novosibirsk State University, Novosibirsk, Russia.,Department of Meteorology and Oceanography, Andhra University, Visakhapatnam, India
| | - M M Ali
- Center for Ocean-Atmospheric Prediction Studies (COAPS), Florida State University, Tallahassee, USA. .,Indian Institute of Tropical Meteorology, Pune, India.
| | - M A Bourassa
- Center for Ocean-Atmospheric Prediction Studies (COAPS), Florida State University, Tallahassee, USA.,Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, USA
| | - Y Zheng
- Center for Ocean-Atmospheric Prediction Studies (COAPS), Florida State University, Tallahassee, USA
| | - G J Goni
- Physical Oceanography Division, Atlantic Oceanographic and Meteorological Laboratory (AOML)/NOAA, Miami, USA
| | - G R Foltz
- Physical Oceanography Division, Atlantic Oceanographic and Meteorological Laboratory (AOML)/NOAA, Miami, USA
| | - M Rajeevan
- Ministry of Earth Sciences, Government of India, New Delhi, India
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Azmat M, Ijaz M, Farooqi SH, Ghaffar A, Ali A, Masud A, Saleem S, Rehman A, Ali MM, Mehmood K, Khan A, Zhang H. Molecular epidemiology, associated risk factors, and phylogenetic analysis of anaplasmosis in camel. Microb Pathog 2018; 123:377-384. [PMID: 30053605 DOI: 10.1016/j.micpath.2018.07.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 02/19/2018] [Revised: 07/23/2018] [Accepted: 07/23/2018] [Indexed: 11/30/2022]
Abstract
Camel Anaplasmosis is caused by members of family Anaplasmatacae, a tick transmitted, obligate intracellular bacteria. The etiological bacteria are transmitted by ixodid tick species. The species have multi host range distribution that is why it is crucial to diagnose it timely. The aim of present study was to investigate the molecular epidemiology i.e. prevalence and risk factors analysis of camel anaplasmosis. Furthermore, variations in hematological standards were also evaluated. The study found an overall 13.33% prevalence in camels. The confirmation of PCR positive samples for Anaplasma spp. was made through sequencing, the study isolatesshowed high homology with Iranian, Chinese, Philippines and South African isolates of Anaplasmatacae (Accession numbers'; KX765882, KP062964, KY242456, LC007100 and U54806) on BLAST queries. The phylogenetic analysis revealedthree study isolates of present study clustered with each other and the cluster was found closer to Chinese isolate of A. phagocytophilum (KY242456), A. marginale (KU586048), and Mongolian isolates of A. ovis (LC194134). Two of the isolates resembled Iranian isolate of Candidatus Anaplasmacamelii (KX765882), while one isolate resembled with Chinese isolates of A. Platys (KX987336) and Croatian isolates of A. Platys (KY114935). The key risk factors odds ratio (OR>1) identified for occurrence of camel anaplasmosis using regression model found sex and age of animal, previous tick history, tick infestation and tick control status, housing type, cracks in walls, rearing system and other species in surrounding as the key risk factors. The hematological parameters like lymphocytes, monocytes, granulocytes and platelets count were significantly decreased (p < 0.05) in diseased camels than healthy. This is the first ever molecular data on camel anaplasmosis in Pakistan. The disease should be monitored unceasingly as the etiologies have multi host distribution. Prompt attention should be offered to animals because neutropenia, lymphopenia and thrombocytopenia can exacerbate the disease by making the animal predisposed to otherdiseases.
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Affiliation(s)
- M Azmat
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan
| | - M Ijaz
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan.
| | - S H Farooqi
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan
| | - A Ghaffar
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan
| | - A Ali
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan
| | - A Masud
- District Diagnostic Laboratory, Livestock & Dairy Development Department, 42200, Mianwali, Pakistan
| | - S Saleem
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan
| | - A Rehman
- Department of Epidemiology and Public Health, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan
| | - M M Ali
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan
| | - K Mehmood
- University College of Veterinary and Animal Sciences, Islamia University of Bahawalpur-Pakistan, Pakistan
| | - Amjad Khan
- Department of Epidemiology and Public Health, University of Veterinary and Animal Sciences, 54600, Lahore, Pakistan
| | - H Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, PR China.
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Zhang H, Chang Z, Mehmood K, Yang MK, Liu Z, Duan Z, Yuan F, Ali MM, Adnan M, Qasim MU, Shaheen S, Abbas RZ, Tian Y, Guo R. Tetramethylpyrazine inhibited hypoxia-induced expression of calcium-sensing receptors in pulmonary artery smooth muscle cells in chickens. J BIOL REG HOMEOS AG 2018; 32:489-495. [PMID: 29921373] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Tetramethylpyrazine (TMP) is a biologically active ingredient, which is isolated from a popularChinese medicinal plant. It has been used effectively to treat ischemic heart problems, cerebrovascular and thrombotic vascular diseases. This study was designed to evaluate the effect of TMP on calciumsensing receptors in pulmonary artery smooth muscle in chickens. For this purpose forty day-old chicks were distributed into five groups: the control group, the hypoxia group (kept under low Oxygen treatment), and TMP groups (kept under low Oxygen treatment along with treatment of different concentrations of TMP). The pulmonary artery smooth muscle cells were also cultured on 6-well plates in high glucose culture medium and divided into the same five groups. We used in vivo and in vitro study models by applying immunohistochemistry, RT-qPCR assay and Western blotting analysis. Our results showed that pre-incubation with hypoxia markedly stimulated the activation of calcium-sensing receptor (CaSR) in pulmonary artery smooth muscle cells (PASMCs). The TMP decreased the mRNA and protein levels of CaSR. Treatment with TMP clearly inhibited the activation of all CaSR in a dose-dependent manner. Our data demonstrated that TMP can down-regulate the expression of CaSR. Therefore, these findings provide a new target to treat pulmonary arterial hypertension (PAH) under hypoxic conditions.
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Affiliation(s)
- H Zhang
- Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Science, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture) Wuhan, China
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Z Chang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - K Mehmood
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- University College of Veterinary and Animal Sciences, Islamia University of Bahawalpur, Pakistan
| | - M K Yang
- Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Science, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture) Wuhan, China
| | - Z Liu
- Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Science, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture) Wuhan, China
| | - Z Duan
- Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Science, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture) Wuhan, China
| | - F Yuan
- Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Science, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture) Wuhan, China
| | - M M Ali
- University of Veterinary and Animal Sciences Lahore, Pakistan
| | - M Adnan
- College of Plant Science, Huazhong Agricultural University, Wuhan, P. R. China
| | - M U Qasim
- College of Plant Science, Huazhong Agricultural University, Wuhan, P. R. China
| | - S Shaheen
- Bahauddin Zakariya University Multan, Pakistan
| | - R Z Abbas
- Department of Parasitology, University of Agriculture Faisalabad, Pakistan
| | - Y Tian
- Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Science, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture) Wuhan, China
| | - R Guo
- Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Science, Wuhan, China
- Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture) Wuhan, China
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13
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Maaløe N, Housseine N, Meguid T, Nielsen BB, Jensen A, Khamis RS, Mohamed AG, Ali MM, Said SM, van Roosmalen J, Bygbjerg IC. Effect of locally tailored labour management guidelines on intrahospital stillbirths and birth asphyxia at the referral hospital of Zanzibar: a quasi-experimental pre-post study (The PartoMa study). BJOG 2017; 125:235-245. [PMID: 28892306 DOI: 10.1111/1471-0528.14933] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2017] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To evaluate effect of locally tailored labour management guidelines (PartoMa guidelines) on intrahospital stillbirths and birth asphyxia. DESIGN Quasi-experimental pre-post study investigating the causal pathway through changes in clinical practice. SETTING Tanzanian low-resource referral hospital, Mnazi Mmoja Hospital. POPULATION Facility deliveries during baseline (1 October 2014 until 31 January 2015) and the 9th to 12th intervention
month (1 October 2015 until 31 January 2016) [corrected]. METHODS Birth outcome was extracted from all cases of labouring women during baseline (n = 3690) and intervention months (n = 3087). Background characteristics and quality of care were assessed in quasi-randomly selected subgroups (n = 283 and n = 264, respectively). MAIN OUTCOME MEASURES Stillbirths and neonates with 5-minute Apgar score ≤5. RESULTS Stillbirth rate fell from 59 to 39 per 1000 total births (RR 0.66, 95% CI 0.53-0.82), and subanalyses suggest that this was primarily due to reduction in intrahospital stillbirths. Apgar scores between 1 and 5 fell from 52 to 28 per 1000 live births (RR 0.53, 95% CI 0.41-0.69). Median time from last fetal heart assessment till delivery (or fetal death diagnosis) fell from 120 minutes (IQR 60-240) to 74 minutes (IQR 30-130) (Mann-Whitney test for difference, P < 0.01). Oxytocin augmentation declined from 22% to 12% (RR 0.54, 95% CI 0.37-0.81) and timely use improved. CONCLUSION Although low human resources and substandard care remain major challenges, PartoMa guidelines were associated with improvements in care, leading to reductions in stillbirths and birth asphyxia. Findings furthermore emphasise the central role of improved fetal surveillance and restricted intrapartum oxytocin use in safety at birth. TWEETABLE ABSTRACT: #PartoMa guidelines aided in reducing stillbirths and birth asphyxia at a Tanzanian low-resource hospital PLAIN LANGUAGE SUMMARY: PartoMa guidelines help birth attendants in Tanzania to save lives Every year, 3 million babies die on the day of birth. The vast majority of these deaths occur in the poorest countries. If their mothers had received better care during birth, most babies would have survived. At Mnazi Mmoja Hospital, an East African referral hospital, the PartoMa study shows that use of locally developed guidelines helps birth attendants to deliver better quality of care, which has led to improved survival at birth. At the hospital studied, resources are scarce. Each birth attendant assists four to six birthing women simultaneously, and many have less than 1 year of professional experience. International guidelines are available, but they are often unachievable and seldom applied. The PartoMa guidelines were developed in close collaboration with the birth attendants and approved by seven international experts. The result is an 8-page pocket booklet providing locally achievable and simple decision support for care during birth. Use of the PartoMa guidelines began in February 2015. As the staff group frequently changes, quarterly seminars are conducted where birth attendants are welcomed after working hours to learn about the guidelines. The guidelines have been positively received, and seminar attendance remains high. Use of the PartoMa guidelines is associated with: A decrease by one-third in stillbirths (59 to 39 per 1000 total births) A nearly halving in the number of babies born in immediate poor medical condition (52 to 28 per 1000 live births) The results presented here derive from a comparison of births before using the PartoMa guidelines and during the 9th-12th month of use. Such a 'before-after' study cannot exclude the possibility of other causes of better survival at birth. However, the improved survival is consistent with improved care during birth, which is in line with the PartoMa guidelines.
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Affiliation(s)
- N Maaløe
- Global Health Section, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - N Housseine
- Mnazi Mmoja Hospital, Zanzibar, Tanzania.,Julius Centre for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands
| | - T Meguid
- Mnazi Mmoja Hospital, Zanzibar, Tanzania.,School of Health & Medical Sciences, State University of Zanzibar, Zanzibar, Tanzania
| | - B B Nielsen
- Department of Obstetrics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Akg Jensen
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - R S Khamis
- Mnazi Mmoja Hospital, Zanzibar, Tanzania
| | | | - M M Ali
- Mnazi Mmoja Hospital, Zanzibar, Tanzania
| | - S M Said
- Mnazi Mmoja Hospital, Zanzibar, Tanzania
| | - J van Roosmalen
- Athena Institute, VU University of Amsterdam, Amsterdam, the Netherlands
| | - I C Bygbjerg
- Global Health Section, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
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14
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Abstract
The delivery of anti-cancer agents to brain tumors represent a challenge because the blood-brain tumor barrier (BBTB) effectively limits the delivery of many agents. A new generation 3 (G3) dendrimer-based curcumin (Curc) conjugate was synthesized. The synthesized G3-Curc conjugate demonstrated full solubility in aqueous media. The in vitro study revealed that G3-Curc nanoparticles were internalized into glioma U-251 cells. Systemic delivery of G3-Curc conjugate led to preferentially accumulation in an orthotopic preclinical glioma model minimizing systemic toxic effect. Multicolor microscopy images of the tumor tissue showed that G3-Curc particles were internalized inside tumor cells selectively and further localized within nuclei. Enhanced bioavailability of G3-Curc conjugate was also observed with improved therapeutic efficacy against different cancers cells.
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Affiliation(s)
- N H Gamage
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Li Jing
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI 48202, USA
| | - M J Worsham
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - M M Ali
- Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA
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15
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Bellizzi S, Ali MM, Abalos E, Betran AP, Kapila J, Pileggi-Castro C, Vogel JP, Merialdi M. Are hypertensive disorders in pregnancy associated with congenital malformations in offspring? Evidence from the WHO Multicountry cross sectional survey on maternal and newborn health. BMC Pregnancy Childbirth 2016; 16:198. [PMID: 27473210 PMCID: PMC4966715 DOI: 10.1186/s12884-016-0987-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [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: 11/06/2015] [Accepted: 07/23/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Annually, around 7.9 million children are born with birth defects and the contribution of congenital malformations to neonatal mortality is generally high. Congenital malformations in children born to mothers with hypertensive disorders during pregnancy has marginally been explored. METHODS Country incidence of congenital malformations was estimated using data on the 310 401 livebirths of the WHO Multicountry Survey which reported information from 359 facilities across 29 countries. A random-effect logistic regression model was utilized to explore the associations between six broad categories of congenital malformations and the four maternal hypertensive disorders "Chronic Hypertension", "Preeclampsia" and "Eclampsia" and "Chronic hypertension with superimposed preeclampsia". RESULTS The occupied territories of Palestine presented the highest rates in all groups of malformation except for the "Lip/Cleft/Palate" category. Newborns of women with chronic maternal hypertension were associated with a 3.7 (95 % CI 1.3-10.7), 3.9 (95 % CI 1.7-9.0) and 4.2 (95 % CI 1.5-11.6) times increase in odds of renal, limb and lip/cleft/palate malformations respectively. Chronic hypertension with superimposed preeclampsia was associated with a 4.3 (95 % CI 1.3-14.4), 8.7 (95 % CI 2.5-30.2), 7.1 (95 % CI 2.1-23.5) and 8.2 (95 % CI 2.0-34.3) times increase in odds of neural tube/central nervous system, renal, limb and Lip/Cleft/Palate malformations. CONCLUSIONS This study shows that chronic hypertension in the maternal period exposes newborns to a significant risk of developing renal, limb and lip/cleft/palate congenital malformations, and the risk is further exacerbate by superimposing eclampsia. Additional research is needed to identify shared pathways of maternal hypertensive disorders and congenital malformations.
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Affiliation(s)
- S Bellizzi
- World Health Organization, Eastern Mediterranean Regional Office, P.O. Box 7608, Nasr City, Cairo, 11371, Egypt
| | - M M Ali
- World Health Organization, Eastern Mediterranean Regional Office, P.O. Box 7608, Nasr City, Cairo, 11371, Egypt.
| | - E Abalos
- Centro Rosarino de Estudios Perinatales (CREP) Moreno 878, 6° Piso. (S2000DKR), Rosario, Argentina
| | - A P Betran
- Department of Reproductive Health and Research, World Health Organization, UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Avenue Appia 20, Geneva, Switzerland
| | - J Kapila
- Maternal & Child Morbidity & Mortality Surveillance Unit, Family Health Bureau - Ministry of Health, 231 De Saram Place, Colombo, 10, Sri Lanka
| | - C Pileggi-Castro
- Department of Pediatrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - J P Vogel
- Department of Reproductive Health and Research, World Health Organization, UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Avenue Appia 20, Geneva, Switzerland
| | - M Merialdi
- , BD. 1 Becton Drive, MC 374, Franklin Lakes, NJ, 07417-1885, USA
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16
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Abdelwhab EM, Hassan MK, Abdel-Moneim AS, Naguib MM, Mostafa A, Hussein ITM, Arafa A, Erfan AM, Kilany WH, Agour MG, El-Kanawati Z, Hussein HA, Selim AA, Kholousy S, El-Naggar H, El-Zoghby EF, Samy A, Iqbal M, Eid A, Ibraheem EM, Pleschka S, Veits J, Nasef SA, Beer M, Mettenleiter TC, Grund C, Ali MM, Harder TC, Hafez HM. Introduction and enzootic of A/H5N1 in Egypt: Virus evolution, pathogenicity and vaccine efficacy ten years on. Infect Genet Evol 2016; 40:80-90. [PMID: 26917362 DOI: 10.1016/j.meegid.2016.02.023] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/18/2016] [Accepted: 02/19/2016] [Indexed: 12/09/2022]
Abstract
It is almost a decade since the highly pathogenic H5N1 avian influenza virus (A/H5N1) of clade 2.2.1 was introduced to Egypt in 2005, most likely, via wild birds; marking the longest endemic status of influenza viruses in poultry outside Asia. The endemic A/H5N1 in Egypt still compromises the poultry industry, poses serious hazards to public health and threatens to become potentially pandemic. The control strategies adopted for A/H5N1 in Egyptian poultry using diverse vaccines in commercialized poultry neither eliminated the virus nor did they decrease its evolutionary rate. Several virus clades have evolved, a few of them disappeared and others prevailed. Disparate evolutionary traits in both birds and humans were manifested by accumulation of clade-specific mutations across viral genomes driven by a variety of selection pressures. Viruses in vaccinated poultry populations displayed higher mutation rates at the immunogenic epitopes, promoting viral escape and reducing vaccine efficiency. On the other hand, viruses isolated from humans displayed changes in the receptor binding domain, which increased the viral affinity to bind to human-type glycan receptors. Moreover, viral pathogenicity exhibited several patterns in different hosts. This review aims to provide an overview of the viral evolution, pathogenicity and vaccine efficacy of A/H5N1 in Egypt during the last ten years.
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Affiliation(s)
- E M Abdelwhab
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany; National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - M K Hassan
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - A S Abdel-Moneim
- Virology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt; Microbiology Department, Virology Division, College of Medicine, Taif University, Al-Taif 21944, Saudi Arabia
| | - M M Naguib
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany; National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - A Mostafa
- Center of Scientific Excellence for Influenza Viruses, National Research Centre (NRC), Dokki, Giza 12311, Egypt; Institute of Medical Virology, Justus Liebig University Giessen, Schubertstrasse 81, Giessen 35392, Germany
| | - I T M Hussein
- Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - A Arafa
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - A M Erfan
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - W H Kilany
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - M G Agour
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt; Animal Health Research Institute, Dokki, 12618 Giza, Egypt
| | - Z El-Kanawati
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - H A Hussein
- Department of Virology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - A A Selim
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - S Kholousy
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - H El-Naggar
- Veterinary Serum and Vaccine Research Institute, Abbasia, El-Sekka El-Beida St., PO Box 131, Cairo 11381, Egypt
| | - E F El-Zoghby
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - A Samy
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - M Iqbal
- Avian Influenza Group, The Pirbright Institute, Ash Road, Pirbright, Woking GU24 0NF, United Kingdom
| | - A Eid
- Department of Avian and Rabbit Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - E M Ibraheem
- Animal Health Research Institute, Dokki, 12618 Giza, Egypt
| | - S Pleschka
- Institute of Medical Virology, Justus Liebig University Giessen, Schubertstrasse 81, Giessen 35392, Germany
| | - J Veits
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany
| | - S A Nasef
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt
| | - M Beer
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany
| | - T C Mettenleiter
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany
| | - C Grund
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany
| | - M M Ali
- National Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Dokki, Giza 12618, Egypt; Animal Health Research Institute, Dokki, 12618 Giza, Egypt
| | - T C Harder
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, D-17493 Greifswald-Insel Riems, Germany
| | - H M Hafez
- Institute of Poultry Diseases, Freie Universität Berlin, Königsweg 63, 14163 Berlin, Germany.
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Carrara M, Prischi F, Nowak PR, Ali MM. Crystal structures reveal transient PERK luminal domain tetramerization in endoplasmic reticulum stress signaling. EMBO J 2015; 34:1589-600. [PMID: 25925385 PMCID: PMC4474532 DOI: 10.15252/embj.201489183] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 04/13/2015] [Indexed: 11/25/2022] Open
Abstract
Stress caused by accumulation of misfolded proteins within the endoplasmic reticulum (ER) elicits a cellular unfolded protein response (UPR) aimed at maintaining protein-folding capacity. PERK, a key upstream component, recognizes ER stress via its luminal sensor/transducer domain, but the molecular events that lead to UPR activation remain unclear. Here, we describe the crystal structures of mammalian PERK luminal domains captured in dimeric state as well as in a novel tetrameric state. Small angle X-ray scattering analysis (SAXS) supports the existence of both crystal structures also in solution. The salient feature of the tetramer interface, a helix swapped between dimers, implies transient association. Moreover, interface mutations that disrupt tetramer formation in vitro reduce phosphorylation of PERK and its target eIF2α in cells. These results suggest that transient conversion from dimeric to tetrameric state may be a key regulatory step in UPR activation.
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Affiliation(s)
- Marta Carrara
- Department of Life Sciences, Imperial College, London, UK
| | | | - Piotr R Nowak
- Department of Life Sciences, Imperial College, London, UK
| | - Maruf Mu Ali
- Department of Life Sciences, Imperial College, London, UK
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18
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Abdulla MC, Alungal J, Hashim S, Ali MM, Musambil M. SLE presenting as multiple hemorrhagic complications. Lupus 2015; 24:1103-6. [DOI: 10.1177/0961203315573853] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 01/28/2015] [Indexed: 11/15/2022]
Abstract
A 24 year old female with hereditary spastic paraplegia presented with intermittent headache for one year. She also had lower abdominal pain and vomiting for two months. She was pale, had icterus and mild splenomegaly. On diagnostic evaluation she was found to have hemolytic anemia, thrombocytopenia and bilateral adrenal, subdural, soft tissue (scalp and orbit) hemorrhages due to systemic lupus erythematosus (SLE). However, antiphospholipid syndrome (APS) antibodies were negative. Bilateral adrenal hemorrhage without associated APS is a rare phenomenon in SLE. We describe a case of SLE presenting with sequence of rare hemorrhagic complications in concert.
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Affiliation(s)
- M C Abdulla
- Department of Internal Medicine, M.E.S. Medical College, Perinthalmanna, India
| | - J Alungal
- Department of Internal Medicine, M.E.S. Medical College, Perinthalmanna, India
| | - S Hashim
- Department of Internal Medicine, M.E.S. Medical College, Perinthalmanna, India
| | - M M Ali
- Department of Internal Medicine, M.E.S. Medical College, Perinthalmanna, India
| | - M Musambil
- Medical biotechnology Central Research Laboratory, M.E.S. Medical College, Perinthalmanna, India
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19
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Carrara M, Prischi F, Nowak PR, Kopp MC, Ali MM. Noncanonical binding of BiP ATPase domain to Ire1 and Perk is dissociated by unfolded protein CH1 to initiate ER stress signaling. eLife 2015; 4. [PMID: 25692299 PMCID: PMC4337721 DOI: 10.7554/elife.03522] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 01/29/2015] [Indexed: 12/20/2022] Open
Abstract
The unfolded protein response (UPR) is an essential cell signaling system that detects the accumulation of misfolded proteins within the endoplasmic reticulum (ER) and initiates a cellular response in order to maintain homeostasis. How cells detect the accumulation of misfolded proteins remains unclear. In this study, we identify a noncanonical interaction between the ATPase domain of the ER chaperone BiP and the luminal domains of the UPR sensors Ire1 and Perk that dissociates when authentic ER unfolded protein CH1 binds to the canonical substrate binding domain of BiP. Unlike the interaction between chaperone and substrates, we found that the interaction between BiP and UPR sensors was unaffected by nucleotides. Thus, we discover that BiP is dual functional UPR sensor, sensing unfolded proteins by canonical binding to substrates and transducing this event to noncanonical, signaling interaction to Ire1 and Perk. Our observations implicate BiP as the key component for detecting ER stress and suggest an allosteric mechanism for UPR induction. DOI:http://dx.doi.org/10.7554/eLife.03522.001 Proteins perform many essential tasks in cells, but to be able to work they first have to correctly fold into a specific three-dimensional shape. Within the cell, many proteins are folded with the help of ‘chaperone’ proteins. If any proteins fold incorrectly, the normal workings of the cell can be disturbed, which may damage the cell. This is more likely to happen if a cell suddenly requires a large number of proteins to be made, which can overwhelm the chaperone proteins. In humans and other eukaryotic organisms, many proteins are folded in a compartment within the cell called the endoplasmic reticulum. Inside this compartment there is a system called the unfolded protein response that detects misfolded proteins and boosts the cell's capacity to re-fold them. As part of this system, two sensor proteins detect when misfolded proteins are present, but it is not clear how they do so. It has been suggested that a chaperone protein called BiP may be able to activate these sensor proteins in order to turn on the unfolded protein response. In this study, Carrara et al. studied the sensor proteins and BiP using an artificial set-up in the laboratory. The experiments show that both of the sensor proteins can bind to a section of the BiP chaperone called the ATPase domain. However, in the presence of an unfolded protein, BiP stopped interacting with the sensor proteins, which could allow the sensor proteins to activate the unfolded protein response. The experiments also show that BiP must bind to the unfolded protein to activate the unfolded protein response. Carrara et al.'s findings suggest that BiP has a dual role in cells: to sense unfolded proteins by binding to them, and then to activate the sensor proteins that trigger the unfolded protein response. Together, these results suggest a new model for how cells detect and respond to misfolded proteins within the endoplasmic reticulum, and may provide new targets for therapies to treat diseases caused by defects in protein folding. DOI:http://dx.doi.org/10.7554/eLife.03522.002
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Affiliation(s)
- Marta Carrara
- Department of Life Sciences, Imperial College, London, United Kingdom
| | - Filippo Prischi
- Department of Life Sciences, Imperial College, London, United Kingdom
| | - Piotr R Nowak
- Department of Life Sciences, Imperial College, London, United Kingdom
| | - Megan C Kopp
- Department of Life Sciences, Imperial College, London, United Kingdom
| | - Maruf Mu Ali
- Department of Life Sciences, Imperial College, London, United Kingdom
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Islam F, Khanam JA, Khatun M, Zuberi N, Khatun L, Kabir SR, Reza MA, Ali MM, Rabbi MA, Gopalan V, Lam AKY. Ap-Menth-1-ene-4,7-diol (EC-1) fromEucalyptus camaldulensisDhnh. Triggers Apoptosis and Cell Cycle Changes in Ehrlich Ascites Carcinoma Cells. Phytother Res 2015; 29:573-81. [DOI: 10.1002/ptr.5288] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 11/27/2014] [Accepted: 12/05/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Farhadul Islam
- Department of Biochemistry and Molecular Biology; University of Rajshahi; Rajshahi Bangladesh
- Cancer Molecular Pathology, Griffith Health Institute; Griffith University; Gold Coast Australia
| | - Jahan Ara Khanam
- Department of Biochemistry and Molecular Biology; University of Rajshahi; Rajshahi Bangladesh
| | - Mahbuba Khatun
- Department of Biochemistry and Molecular Biology; University of Rajshahi; Rajshahi Bangladesh
| | - Natasha Zuberi
- Department of Biochemistry and Molecular Biology; University of Rajshahi; Rajshahi Bangladesh
| | - Laboni Khatun
- Department of Biochemistry and Molecular Biology; University of Rajshahi; Rajshahi Bangladesh
| | - Syed Rashel Kabir
- Department of Biochemistry and Molecular Biology; University of Rajshahi; Rajshahi Bangladesh
| | - Md Abu Reza
- Department of Genetic Engineering and Biotechnology; University of Rajshahi; Rajshahi Bangladesh
| | - MM Ali
- Department of Applied Chemistry and Chemical Engineering; University of Rajshahi; Rajshahi Bangladesh
| | - M A Rabbi
- BCSIR Laboratories; Rajshahi Bangladesh
| | - Vinod Gopalan
- Cancer Molecular Pathology, Griffith Health Institute; Griffith University; Gold Coast Australia
| | - Alfred King-Yin Lam
- Cancer Molecular Pathology, Griffith Health Institute; Griffith University; Gold Coast Australia
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Ali MM, Lim KS, Yang HZ, Chong WY, Lim WS, Ahmad H. Direct period measurement for fiber Bragg grating using an optical imaging technique. Appl Opt 2013; 52:5393-5397. [PMID: 23913056 DOI: 10.1364/ao.52.005393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 06/29/2013] [Indexed: 06/02/2023]
Abstract
This paper proposes an approach based on an optical imaging technique for the period measurement of fiber Bragg gratings (FBG). The simple, direct technique involves a differential interface contrast (DIC) microscope and a high-resolution CCD camera. Image processing is performed on the microscope images to obtain low-noise grating profiles and then the grating periods. Adopting a large image sample size in the image processing can reduce uncertainty. During the investigation, FBGs of different grating periods are fabricated by prestraining the photosensitive fibers during the UV-writing process. A good linearity between the measured Bragg wavelengths and grating periods is observed and the measured strain-optics coefficient was found to be in agreement with reported literature.
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Affiliation(s)
- M M Ali
- Photonics Research Centre, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
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22
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Ali MM, Hossain MM, Akhter S, Islam MS, Hashem MA. Effect of age on slaughterhouse by-products of indigenous cattle of Bangladesh. ACTA ACUST UNITED AC 2013. [DOI: 10.3329/bjas.v42i1.15784] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The present study was conducted to investigate the effect of age on slaughterhouse by-products and their chemical composition of indigenous cattle of Bangladesh. Live weight, warm carcass weight and dressing percentage of different age group (T1= 0 Tooth, T2= 2 Teeths, T3= 4 Teeths, T4= 6 Teeths and T5= 8 Teeths) of indigenous cattle were estimated. Average live weight and warm carcass weight of indigenous cattle was 167.64±79.93 kg and 84.83±47.88 kg, respectively on which age has significant effect. The average dressing percentage of indigenous cattle was 48.99±4.84. The average weight (kg) of inedible by-products eg. blood, hide, tail, scrotum, penis, cannon, horn, ear and tail was 6.35±0.69, 14.02±1.66, 0.34±0.03, 0.27±0.02, 0.28±0.03, 2.74±0.22, 0.33±0.04 and 0.17±0.02, respectively on which age has significant effect. The average weight (kg) of edible by-products eg. liver, heart, kidney, lung, brain, spleen, empty stomach, empty intestine, head and tongue was 2.40±0.22, 0.55±0.06, 0.35±0.04, 1.43±0.14, 0.33±0.01, 0.46±0.04, 6.32±0.74, 4.77±0.52, 8.21±0.78 and 0.48±0.04, respectively on which age has significant effect. The chemical composition of edible by-products was more or less similar to the main products of meat industry. DOI: http://dx.doi.org/10.3329/bjas.v42i1.15784 Bang. J. Anim. Sci. 2013. 42 (1): 62-66
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Ali MM, Shokry DA, Zaghloul HS, Rashed LA, Nada MG. PCR applications in identification of saliva samples exposed to different conditions (streptococci detection based). Pak J Biol Sci 2013; 16:575-579. [PMID: 24494527 DOI: 10.3923/pjbs.2013.575.579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 06/03/2023]
Abstract
Oral streptococci represent about 20% of the total oral bacteria, so if it is possible to detect the presence of oral specific bacteria from a forensic specimen by Polymerase chain reaction, this could be used to verify the presence of saliva. Aim of this study is detection of Streptococcus salivarius which is one of the most common streptococci in oral bacteria and Streptococcus mutans which is common in cases of dental caries in various body fluids and skin swabs and assessment of which one of both organisms is more reliable in saliva identification, cross sectional study on Egypt population. Negative control samples (15 samples) were taken from various body fluids (urine, semen) and skin swabs. Mock forensic samples (85 samples) included fresh saliva, saliva, cotton fabrics contaminated with saliva, cigarette butts, bitten apple and semen mixed with saliva samples). DNA extraction was done using DNeasy blood and tissue kit (Qiagen, Tokyo, Japan). Polymerase chain reaction was done for DNA amplification using Polymerase chain reaction master mix then gel electrophoresis was done for samples qualification. Control bacteria were S. salivarius and Streptococcus mutans. Streptococcus salivarius was detected in 83.5% of all saliva contained samples and S. mutans was detected in 67% of saliva contained samples. Both bacteria were not detected in other body fluids and skin swabs, so S. salivarius is more reliable in saliva identification as well as differentiating it from other body fluids. Polymerase chain reaction is valuable in detection of saliva by detecting S. salivarius.
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Affiliation(s)
- M M Ali
- Department of Forensic Medicine, School of Medicine, Cairo University, Cairo, Egypt
| | - D A Shokry
- Department of Forensic Medicine, School of Medicine, Cairo University, Cairo, Egypt
| | - H S Zaghloul
- Department of Forensic Medicine, School of Medicine, Cairo University, Cairo, Egypt
| | - L A Rashed
- Department of Biochemistry, School of Medicine, Cairo University, Cairo, Egypt
| | - M G Nada
- Department of Microbiology, School of Medicine, Cairo University, Cairo, Egypt
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Abstract
The application of neural networks to the optimum routing problem in packet-switched computer networks, where the goal is to minimize the network-wide average time delay, is addressed. Under appropriate assumptions, the optimum routing algorithm relies heavily on shortest path computations that have to be carried out in real time. For this purpose an efficient neural network shortest path algorithm that is an improved version of previously suggested Hopfield models is proposed. The general principles involved in the design of the proposed neural network are discussed in detail. Its computational power is demonstrated through computer simulations. One of the main features of the proposed model is that it will enable the routing algorithm to be implemented in real time and also to be adaptive to changes in link costs and network topology.
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Affiliation(s)
- M M Ali
- Dept. of Electr. and Comput. Eng., Concordia Univ., Montreal, Que
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25
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Abstract
A Barker sequence is employed for the synchronization of two photoplethysmogram (PPG) channels. The correctness of this technique is demonstrated by recording a PPG signal, injecting a Barker sequence at the start of this trace and producing a delayed version of it. After preprocessing, cross-correlation techniques are utilized for accurate time alignment of the two traces. The algorithm can correct for any time misalignment as long as the synchronization sequence appears on both channels.
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Affiliation(s)
- E Zahedi
- Department of Electrical, Electronic and System Engineering, Faculty of Engineering, National University Malaysia (Universiti Kebangsaan Malaysia), 43600 Bangi, Selangor, Malaysia
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Islam F, Khatun H, Ghosh S, Ali MM, Khanam JA. Bioassay of Eucalyptus extracts for anticancer activity against Ehrlich ascites carcinoma (eac) cells in Swiss albino mice. Asian Pac J Trop Biomed 2012; 2:394-8. [PMID: 23569937 PMCID: PMC3609309 DOI: 10.1016/s2221-1691(12)60063-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [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: 08/15/2011] [Revised: 09/16/2011] [Accepted: 10/23/2011] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To evaluate the antineoplastic activity of Eucalyptus extract (EuE) against Ehrlich ascites carcinoma (EAC) in Swiss albino mice. METHODS Preliminary examination of four plant extracts (namely Eucalyptus, Costus, Azadirachta, Feronia) has been done by observing the reduction ability of number of EAC cells in previously inoculated Swiss albino mice. Among them as EuE showed maximum capability, the whole study has been conducted with EuE only. Important parameters viz. enhancement of life span, reduction of average tumor weight etc. have been studied. In addition the effects of EuE on hematological parameters in both normal and EAC inoculated mice have been measured. Effect of EuE on normal peritoneal cells has also been studied. RESULTS : EuE reduced tumor burden remarkably. It reduced the tumor growth rate and enhanced the life span of EAC bearing mice noticeably. It reversed back the hematological parameters towards normal, reduced the trasplantability of EAC cells and enhanced the immunomodulatory effects in mice. The host toxic effect of EuE in mice is minimum and mostly reversible with time. All such data have been compared with those obtained by running parallel experiments with bleomycin at dose 0.3 mg/kg (i.p.). CONCLUSIONS The Eucalyptus extract may be considered as a potent anticancer agent for advanced researches.
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Affiliation(s)
- Farhadul Islam
- Department of Biochemistry and Molecular Biology, Faculty of Science,University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Hasina Khatun
- Department of Biochemistry and Molecular Biology, Faculty of Science,University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Soby Ghosh
- Department of Biochemistry and Molecular Biology, Faculty of Science,University of Rajshahi, Rajshahi-6205, Bangladesh
| | - MM Ali
- Department of Applied Chemistry and Chemical engineering, Faculty of Engineering, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - JA Khanam
- Department of Biochemistry and Molecular Biology, Faculty of Science,University of Rajshahi, Rajshahi-6205, Bangladesh
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Abstract
Phosphogypsum (PG) is a residue of the phosphate fertilizer industry that has relatively high concentrations of harmful radioactive materials. The reduction in concentration of the radionuclides from PG was investigated. The removal process is based on leaching of radionuclides using suitable organic extractants. The studied radionuclides were 226Ra, 210Pb, 238U and 40K. The factors affect the leaching process such as type of leaching materials, contact time, concentration of the desired solvent, liquid to solid ratio, and temperature were studied. Based on the experimental results, about 71.1, 76.4, 62.4, and 75.7% of 226Ra, 210Pb, 238U and 40K respectively were successfully removed from the PG. The reduction in the concentration of radionuclides was accompanied by reduction in the concentration of rare earth elements (∑REE) equals to 69.8%. Using the desired organic extractant under optimum conditions for treatment of the PG waste leads to obtain a decontaminated product that can be safely used in many industrial applications.
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Affiliation(s)
- H El-Didamony
- Chemistry Department, Faculty of Science, Zagazig University, El-Zagazig, El-Sharqia Egypt
| | - M M Ali
- Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt
| | - N S Awwad
- Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
| | - M M Fawzy
- Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt
| | - M F Attallah
- Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
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Ali MM, Al-Daraji WI. Painful, erythematous, zosteriform nodules on the back, arms and abdomen. Clin Exp Dermatol 2011; 36:820-1. [PMID: 21933237 DOI: 10.1111/j.1365-2230.2011.04054.x] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- M M Ali
- Department of Dermatology, Eastbourne Hospital, Worthing, Sussex, UK.
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Bagher-Ebadian H, Nejad-Davarani SP, Ali MM, Brown S, Makki M, Jiang Q, Noll DC, Ewing JR. Magnetic Resonance Imaging Estimation of Longitudinal Relaxation Rate Change (ΔR 1) in Dual Gradient Echo Sequences Using an Adaptive Model. Proc Int Jt Conf Neural Netw 2011; 2011:2501-2506. [PMID: 25285243 PMCID: PMC4181328 DOI: 10.1109/ijcnn.2011.6033544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Magnetic Resonance Imaging (MRI) estimation of contrast agent concentration in fast pulse sequences such as Dual Gradient Echo (DGE) imaging is challenging. An Adaptive Neural Network (ANN) was trained with a map of contrast agent concentration estimated by Look-Locker (LL) technique (modified version of inversion recovery imaging) as a gold standard. Using a set of features extracted from DGE MRI data, an ANN was trained to create a voxel based estimator of the time trace of CA concentration. The ANN was trained and tested with the DGE and LL information of six Fisher rats using a K-Fold Cross-Validation (KFCV) method with 60 folds and 10500 samples. The Area Under the Receiver Operator Characteristic Curve (AUROC) for 60 folds was used for training, testing and optimization of the ANN. After training and optimization, the optimal ANN (4:7:5:1) produced maps of CA concentration which were highly correlated (r =0.89, P < 0.0001) with the CA concentration estimated by the LL technique. The estimation made by the ANN had an excellent overall performance (AUROC = 0.870).
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Affiliation(s)
- H Bagher-Ebadian
- Physics Dept., Oakland University, Rochester, MI 48309 and Dept. Nuclear Engineering, Shiraz University, Shiraz; Siamak P. Nejad-Davarani - Dept. Neurology, Henry Ford Hospital and Dept. Biomedical Eng. University of Michigan, Ann Arbor; Meser M. Ali - Dept. Radiology, Henry Ford Hospital, Stephen L. Brown - Dept. Radiation Oncology, Henry Ford Hospital, Malek Makki, - Dept. Diagnostic Imaging, University Children Hospital of Zurich, Zurich, Switzerland, Quan Jiang - Dept. Neurology, Henry Ford Hospital; Douglas. C. Noll - Dept. Biomedical Engineering, University of Michigan, Ann Arbor, James R. Ewing Dept. Neurology, Henry Ford Hospital, Dept. Neurology, Wayne State University., and Dept. of Physics, Oakland University
| | - S P Nejad-Davarani
- Physics Dept., Oakland University, Rochester, MI 48309 and Dept. Nuclear Engineering, Shiraz University, Shiraz; Siamak P. Nejad-Davarani - Dept. Neurology, Henry Ford Hospital and Dept. Biomedical Eng. University of Michigan, Ann Arbor; Meser M. Ali - Dept. Radiology, Henry Ford Hospital, Stephen L. Brown - Dept. Radiation Oncology, Henry Ford Hospital, Malek Makki, - Dept. Diagnostic Imaging, University Children Hospital of Zurich, Zurich, Switzerland, Quan Jiang - Dept. Neurology, Henry Ford Hospital; Douglas. C. Noll - Dept. Biomedical Engineering, University of Michigan, Ann Arbor, James R. Ewing Dept. Neurology, Henry Ford Hospital, Dept. Neurology, Wayne State University., and Dept. of Physics, Oakland University
| | - M M Ali
- Physics Dept., Oakland University, Rochester, MI 48309 and Dept. Nuclear Engineering, Shiraz University, Shiraz; Siamak P. Nejad-Davarani - Dept. Neurology, Henry Ford Hospital and Dept. Biomedical Eng. University of Michigan, Ann Arbor; Meser M. Ali - Dept. Radiology, Henry Ford Hospital, Stephen L. Brown - Dept. Radiation Oncology, Henry Ford Hospital, Malek Makki, - Dept. Diagnostic Imaging, University Children Hospital of Zurich, Zurich, Switzerland, Quan Jiang - Dept. Neurology, Henry Ford Hospital; Douglas. C. Noll - Dept. Biomedical Engineering, University of Michigan, Ann Arbor, James R. Ewing Dept. Neurology, Henry Ford Hospital, Dept. Neurology, Wayne State University., and Dept. of Physics, Oakland University
| | - S Brown
- Physics Dept., Oakland University, Rochester, MI 48309 and Dept. Nuclear Engineering, Shiraz University, Shiraz; Siamak P. Nejad-Davarani - Dept. Neurology, Henry Ford Hospital and Dept. Biomedical Eng. University of Michigan, Ann Arbor; Meser M. Ali - Dept. Radiology, Henry Ford Hospital, Stephen L. Brown - Dept. Radiation Oncology, Henry Ford Hospital, Malek Makki, - Dept. Diagnostic Imaging, University Children Hospital of Zurich, Zurich, Switzerland, Quan Jiang - Dept. Neurology, Henry Ford Hospital; Douglas. C. Noll - Dept. Biomedical Engineering, University of Michigan, Ann Arbor, James R. Ewing Dept. Neurology, Henry Ford Hospital, Dept. Neurology, Wayne State University., and Dept. of Physics, Oakland University
| | - M Makki
- Physics Dept., Oakland University, Rochester, MI 48309 and Dept. Nuclear Engineering, Shiraz University, Shiraz; Siamak P. Nejad-Davarani - Dept. Neurology, Henry Ford Hospital and Dept. Biomedical Eng. University of Michigan, Ann Arbor; Meser M. Ali - Dept. Radiology, Henry Ford Hospital, Stephen L. Brown - Dept. Radiation Oncology, Henry Ford Hospital, Malek Makki, - Dept. Diagnostic Imaging, University Children Hospital of Zurich, Zurich, Switzerland, Quan Jiang - Dept. Neurology, Henry Ford Hospital; Douglas. C. Noll - Dept. Biomedical Engineering, University of Michigan, Ann Arbor, James R. Ewing Dept. Neurology, Henry Ford Hospital, Dept. Neurology, Wayne State University., and Dept. of Physics, Oakland University
| | - Q Jiang
- Physics Dept., Oakland University, Rochester, MI 48309 and Dept. Nuclear Engineering, Shiraz University, Shiraz; Siamak P. Nejad-Davarani - Dept. Neurology, Henry Ford Hospital and Dept. Biomedical Eng. University of Michigan, Ann Arbor; Meser M. Ali - Dept. Radiology, Henry Ford Hospital, Stephen L. Brown - Dept. Radiation Oncology, Henry Ford Hospital, Malek Makki, - Dept. Diagnostic Imaging, University Children Hospital of Zurich, Zurich, Switzerland, Quan Jiang - Dept. Neurology, Henry Ford Hospital; Douglas. C. Noll - Dept. Biomedical Engineering, University of Michigan, Ann Arbor, James R. Ewing Dept. Neurology, Henry Ford Hospital, Dept. Neurology, Wayne State University., and Dept. of Physics, Oakland University
| | - D C Noll
- Physics Dept., Oakland University, Rochester, MI 48309 and Dept. Nuclear Engineering, Shiraz University, Shiraz; Siamak P. Nejad-Davarani - Dept. Neurology, Henry Ford Hospital and Dept. Biomedical Eng. University of Michigan, Ann Arbor; Meser M. Ali - Dept. Radiology, Henry Ford Hospital, Stephen L. Brown - Dept. Radiation Oncology, Henry Ford Hospital, Malek Makki, - Dept. Diagnostic Imaging, University Children Hospital of Zurich, Zurich, Switzerland, Quan Jiang - Dept. Neurology, Henry Ford Hospital; Douglas. C. Noll - Dept. Biomedical Engineering, University of Michigan, Ann Arbor, James R. Ewing Dept. Neurology, Henry Ford Hospital, Dept. Neurology, Wayne State University., and Dept. of Physics, Oakland University
| | - J R Ewing
- Physics Dept., Oakland University, Rochester, MI 48309 and Dept. Nuclear Engineering, Shiraz University, Shiraz; Siamak P. Nejad-Davarani - Dept. Neurology, Henry Ford Hospital and Dept. Biomedical Eng. University of Michigan, Ann Arbor; Meser M. Ali - Dept. Radiology, Henry Ford Hospital, Stephen L. Brown - Dept. Radiation Oncology, Henry Ford Hospital, Malek Makki, - Dept. Diagnostic Imaging, University Children Hospital of Zurich, Zurich, Switzerland, Quan Jiang - Dept. Neurology, Henry Ford Hospital; Douglas. C. Noll - Dept. Biomedical Engineering, University of Michigan, Ann Arbor, James R. Ewing Dept. Neurology, Henry Ford Hospital, Dept. Neurology, Wayne State University., and Dept. of Physics, Oakland University
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Yasuhara T, Hara K, Maki M, Xu L, Yu G, Ali MM, Masuda T, Yu SJ, Bae EK, Hayashi T, Matsukawa N, Kaneko Y, Kuzmin-Nichols N, Ellovitch S, Cruz EL, Klasko SK, Sanberg CD, Sanberg PR, Borlongan CV. Mannitol facilitates neurotrophic factor up-regulation and behavioural recovery in neonatal hypoxic-ischaemic rats with human umbilical cord blood grafts. J Cell Mol Med 2010; 14:914-21. [PMID: 20569276 PMCID: PMC3823123 DOI: 10.1111/j.1582-4934.2008.00671.x] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [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] [Indexed: 11/27/2022] Open
Abstract
We recently demonstrated that blood–brain barrier permeabilization using mannitol enhances the therapeutic efficacy of systemically administered human umbilical cord blood (HUCB) by facilitating the entry of neurotrophic factors from the periphery into the adult stroke brain. Here, we examined whether the same blood–brain barrier manipulation approach increases the therapeutic effects of intravenously delivered HUCB in a neonatal hypoxic-ischaemic (HI) injury model. Seven-day-old Sprague–Dawley rats were subjected to unilateral HI injury and then at day 7 after the insult, animals intravenously received vehicle alone, mannitol alone, HUCB cells (15k mononuclear fraction) alone or a combination of mannitol and HUCB cells. Behavioural tests at post-transplantation days 7 and 14 showed that HI animals that received HUCB cells alone or when combined with mannitol were significantly less impaired in motor asymmetry and motor coordination compared with those that received vehicle alone or mannitol alone. Brain tissues from a separate animal cohort from the four treatment conditions were processed for enzyme-linked immunosorbent assay at day 3 post-transplantation, and revealed elevated levels of GDNF, NGF and BDNF in those that received HUCB cells alone or when combined with mannitol compared with those that received vehicle or mannitol alone, with the combined HUCB cells and mannitol exhibiting the most robust neurotropic factor up-regulation. Histological assays revealed only sporadic detection of HUCB cells, suggesting that the trophic factor–mediated mechanism, rather than cell replacement per se, principally contributed to the behavioural improvement. These findings extend the utility of blood–brain barrier permeabilization in facilitating cell therapy for treating neonatal HI injury.
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Affiliation(s)
- T Yasuhara
- Department of Neurology, Medical College of Georgia, Augusta, GA, USA
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Abstract
Sarcoidosis is a multiorgan granulomatous disease in which the skin is one of the frequently involved target organs. Cutaneous involvement occurs in a third of patients with sarcoidosis and has protean manifestations. More than a century has passed since the initial description of sarcoidosis, but its cause continues to be an enigma. Recent studies have introduced several new insights into the pathogenesis of this disease. The aim of this literature review was to provide a comprehensive overview on the current updates in the pathogenesis of sarcoidosis. This review has revealed that several genetic polymorphisms are associated with an increased risk of developing sarcoidosis, suggesting that genetic susceptibility to sarcoidosis is probably polygenic. Environmental factors may also modify the susceptibility to sarcoidosis. Evidence favouring an infectious aetiology has been accumulating, but the results of studies are conflicting. The current concept is that the pathogenesis of sarcoidosis involves a T-helper-1-mediated immune response to environmental antigens in a genetically susceptible host. The studies carried out on sarcoidosis have largely focused on the pulmonary aspects and have been mainly conducted by respiratory physicians. In contrast, research conducted on the cutaneous aspects of sarcoidosis is comparatively limited. Although tremendous advances have been made, there is a significant gap between the vast knowledge accumulated on sarcoidosis in recent years and the understanding of this disease.
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Affiliation(s)
- M M Ali
- Department of Dermatology, School of Medicine, Cardiff University, Cardiff, UK.
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Mohieldein AH, Abdelkarim AM, Osman FM, Abdallah EA, Ali MM. HbA1c as a marker to reduce lower limb amputation in patients with type 2 diabetes mellitus. Sud Jnl Med Sci 2008. [DOI: 10.4314/sjms.v3i3.38541] [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: 11/17/2022] Open
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34
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Abstract
Generalized essential telangiectasia (GET) is a rare skin disorder characterized by generalized development of dilated venules, which start at the lower extremities and progressively spread to the rest of the body. Mucous and conjunctival involvement is rare. The diagnosis is based on clinical examination, after excluding other primary and secondary causes of telangiectasia.
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Affiliation(s)
- M M Ali
- Department of Dermatology, Eastbourne Hospital, Eastbourne, UK.
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35
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Ali MM, Jayabalan S, Machnicki M, Sohal GS. Ventrally emigrating neural tube cells migrate into the developing vestibulocochlear nerve and otic vesicle. Int J Dev Neurosci 2003; 21:199-208. [PMID: 12781787 DOI: 10.1016/s0736-5748(03)00036-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Virtually all cell types in the inner ear develop from the cells of the otic vesicle. The otic vesicle is formed by the invagination of non-neural ectodermal cells known as the otic placode. We investigated whether a recently described cell population, originating from the ventral part of the hindbrain neural tube known as the ventrally emigrating neural tube (VENT) cells, also contributes cells to the otic vesicle. The ventral hindbrain neural tube cells were labeled with the fluorescent vital dye DiI or replication-deficient retroviruses containing the LacZ gene in chick embryos on embryonic day 2, after the emigration of neural crest from this region. One day later, the labeled cells were detected only in the hindbrain neural tube. Shortly thereafter, the labeled cells began to appear in the eighth (vestibulocochlear) cranial nerve and otic vesicle. From embryonic day 3.5-5, the labeled cells were detected in the major derivatives of the otic vesicle, i.e. the endolymphatic duct, semicircular canals, utricle, saccule, cochlea, and vestibulocochlear ganglion. That the emigrated cells originated from the ventral part of the hindbrain neural tube was confirmed by focal application of DiI impregnated filter paper and with quail chimeras. It is concluded that, in addition to the otic placode cells, the otic vesicle also contains the ventrally emigrating neural tube cells, and that both cell populations contribute to the structures and cell types in the inner ear. It is well known that inductive signals from the hindbrain are required for the morphogenesis of the inner ear. The migration of the hindbrain neural tube cells into the otic vesicle raises the possibility that the inductive effect of the hindbrain might be mediated, at least in part, by the ventrally emigrating neural tube cells and that, therefore, a mechanism exists that involves cells rather than diffusible molecules only.
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Affiliation(s)
- M M Ali
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta 30912, USA
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Abstract
We investigated the contributions of a recently described population of neural tube cells, which participates in the development of a variety of tissues, to the development of the heart and great vessels. These cells, termed as the ventrally emigrating neural tube (VENT) cells, originate in the ventral part of the hindbrain neural tube, emigrate at the site of attachment of the cranial nerves, and populate their respective target tissues. VENT cells of the caudal hindbrain neural tube at the level of the vagus nerve, which were previously reported to migrate into the heart, were tagged with replication-deficient retroviruses containing the LacZ gene in chick embryos, after the emigration of neural crest from this region. In older embryos, VENT cells were detected in a variety of locations including the ventricles, atria, their septa, aorticopulmonary septum, and great vessels of the heart. Immunostaining with a specific marker revealed that VENT cells differentiated into smooth muscle cells of great vessels. Differentiation of VENT cells into cardiac muscle cells was reported previously. Extirpation of the VENT cells prior to their departure from the neural tube resulted in some common cardiovascular malformations: thin-walled ventricles and atria, ventricular and atrial septal defects, persistent truncus arteriosus, and stenosis of the great vessels. These results suggest that a novel population of neural tube cells also contributes to the normal development of the heart and great vessels. Thus, the heart and great vessels develop from three sources of cells: mesoderm, neural crest, and VENT cells.
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Affiliation(s)
- M M Ali
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta 30912, USA
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Abstract
The enteric nervous system is believed to be derived solely from the neural crest cells. This is partly based on the belief that the neural crest cells are the sole neural tube-derived cells colonizing the gastrointestinal tract. However, recent studies have shown that after the emigration of neural crest cells an additional population of cells emigrate from the cranial neural tube. These cells originate in the ventral part of the hindbrain, emigrate through the site of attachment of the cranial nerves, and colonize a variety of developing structures including the gastrointestinal tract. This cell population has been named the ventrally emigrating neural tube (VENT) cells. We followed the fate of these cells in the gastrointestinal tract. Ventral hindbrain neural tube cells of chick embryos were tagged with replication-deficient retroviral vectors containing the LacZ gene, after the emigration of neural crest from this region. In control embryos, the viral concentrate was dropped on the dorsal part of the neural tube. Embryos were sacrificed from embryonic days 3-12 and processed for the detection of LacZ positive ventrally emigrating neural tube cells. These cells colonized only the foregut, specifically the duodenum and stomach. Immunostaining with the neural crest cell marker HNK-1 showed that they were HNK-1 negative, indicating that they were not derived from neural crest. Cells were detected in three locations: (1). the myenteric and submucosal plexus of the enteric nervous system; (2). circular smooth muscle cell layer; and (3). mucosal lining of the lumen. A variety of specific markers were used to identify their fate. Some ventrally emigrating neural tube cells differentiated into neurons and glial cells, indicating that the enteric nervous system in the foregut develops from an additional source of precursor cells. It was also found that some of these cells differentiated into interstitial cells of Cajal, which mediate impulses between the enteric nervous system and smooth muscle cells, whereas others differentiated into epithelium. Altogether, these results indicate that the ventrally emigrating neural tube cells are multipotential. More importantly, they reveal a novel source of precursor cells for the neurons and glial cells of the enteric nervous system. The developmental and functional significance of the heterogeneous origin of the cell types remains to be established.
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Affiliation(s)
- G S Sohal
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta, GA 30912, USA.
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Chia SL, Kapoor V, Ali MM, Lie D, Chang PCC, Mitra AK, Tay BK. The posterior cruciate ligament: an anthropometric study in Asians and evaluation of safe limits for bony tunnel creation during reconstruction. Ann Acad Med Singap 2002; 31:631-5. [PMID: 12395651] [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: 02/27/2023]
Abstract
INTRODUCTION Quantitative data regarding the dimensions of the posterior cruciate ligament (PCL) and its insertions have not been studied in Asians, and concerns have been raised regarding the danger of vascular injury when the bony tunnels are created during arthroscopically-assisted reconstruction. MATERIALS AND METHODS Ten male cadavers were used in this study, incorporating dissection and procedural arms. In the procedural arm, the path of the drill bit was tracked fluoroscopically as the tibial and femoral tunnels were created during simulated reconstructive surgery, and the effect of varying knee flexion angles was studied. Fluoroscopic images were analysed using specialised image processing software. RESULTS The mean length of the PCL at full extension was 37.7 +/- 1.9 mm, and the mean mid-substance width was 13.7 +/- 1.7 mm. The mean sagittal distance between the exit point of the tibial tunnel and the anterior surface of the popliteal artery, across all knee flexion positions, was merely 6.0 mm (range, 2.8 to 10.2 mm). This distance tended to increase with increasing knee flexion, but this was not statistically significant. The mean distance between the exit point of the femoral tunnel and the femoral artery was 51.1 mm (range, 42.1 to 59.0 mm). CONCLUSIONS The dimensions of the PCL and its insertions in Asians do not vary greatly from those reported for Western subjects. The distance from the exit point of the tibial tunnel to the popliteal artery is very small and, although this distance increases with increasing knee flexion, the improvement in the safety margin may neither be clinically nor statistically significant. The margin of safety for drilling of the femoral tunnel is much greater.
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Affiliation(s)
- S L Chia
- Sports Service, Singapore General Hospital, Outram Road, Singapore 169608
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Shukla PK, Khanna VK, Ali MM, Maurya RR, Handa SS, Srimal RC. Protective effect of acorus calamus against acrylamide induced neurotoxicity. Phytother Res 2002; 16:256-60. [PMID: 12164272 DOI: 10.1002/ptr.854] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [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: 11/10/2022]
Abstract
Exposure of rats to acrylamide (ACR) caused hind limb paralysis in 58% of the animals on day 10 and decreased behavioural parameters, namely distance travelled, ambulatory time, stereotypic time and basal stereotypic movements compared with the control group. These rats also had a decrease in the reduced glutathione (GSH) content and glutathione-S-transferase (GST) activity in the corpus striatum and an increase in striatal dopamine receptors, as evident by an increase in the binding of 3H-spiperone to striatal membranes. Treatment with the ethanol:water (1:1) extract of the rhizomes of Acorus calamus (AC-002) increased the GSH content and GST activity in the corpus striatum while insignificant changes were observed in other parameters. Rats treated with ACR and AC-002 in combination had a lower incidence of paralysis (18%) compared with those treated with ACR alone on day 10 of the experiment. The rats also showed a partial recovery in other behavioural parameters. The levels of GSH content and GST activity increased in the corpus striatum, while the dopamine receptors decreased compared with the ACR treated rats. The results suggest that the neurobehavioural changes produced by ACR may be prevented following treatment with Acorus calamus rhizomes.
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Dimov RS, Mitov FS, Deenichin GP, Ali MM, Doikov IJ, Yovchev IJ. Stimulation electromyography as a method of intraoperative identification of the recurrent laryngeal nerve in thyroid surgery. Folia Med (Plovdiv) 2002; 43:17-20. [PMID: 11930827] [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: 02/24/2023] Open
Abstract
INTRODUCTION The iatrogenic injury of the recurrent laryngeal nerve during thyroid surgery still represents a major problem because of the great physiologic and psychologic trauma to the patients. The incidence of this complication ranges between 1% and 15% depending on the thyroid pathology and type of surgery. AIM To evaluate the potential of stimulation electromyography as a method of intraoperative prophylaxis of iatrogenic injuries of the recurrent laryngeal nerve. MATERIAL AND METHODS Intraoperative monitoring of the recurrent laryngeal nerve based on stimulation electromyography, which was introduced in the Clinics of Surgery and Otorhinolaryngology at the Higher Medical Institute in Plovdiv, was applied in thyroid surgery using Neurosign 100 (Magstim Company Ltd., Wales, UK) apparatus. The study involved 5 experimental dogs and 73 recurrent laryngeal nerves in 47 patients treated in the clinics from November 1, 1999 to February 15, 2000. RESULTS In all experimental animals and patients the electrical stimulation was successful triggering an "M" response of the laryngeal muscles (the vocal muscle). A stable contact was achieved between the recording (needle) electrodes and the vocal folds. None of the patients had signs of laryngeal palsy or complaints other from the usual in endotracheal intubation. CONCLUSION The results suggest that the intraoperative stimulation electromyography of the recurrent laryngeal nerve is a safe and effective method for evaluation of the nerve integrity during and at the end of the operation.
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Affiliation(s)
- R S Dimov
- Clinic of Surgery, Higher Medical Institute, 15A Vassil Aprilov St., 4000 Plovdiv, Bulgaria.
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Kumar P, Husain SG, Murthy RC, Srivastava SP, Anand M, Ali MM, Seth PK. Neuropsychological studies on lead battery workers. Vet Hum Toxicol 2002; 44:76-8. [PMID: 11931507] [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: 02/24/2023]
Abstract
This study assessed the psychological status of 60 lead-acid battery workers occupationally exposed to low level lead and 30 referents in Lucknow. Digit spans and symbol, Bourdon-wiersma vigilance and Raven's Progressive matrices tests were administered. Significant impairments in concentration, attention, auditory and visual memory, psycho-motor speed, perceptual accuracy, and visual reasoning were observed in the workers compared to the referents. The deficits were not related to exposure duration since the magnitude of the impairments observed in workers with 1-y duration was the same as in those with more (up to 30 years) work duration. The blood lead of the battery workers was significantly elevated. There were functional deficits of the central nervous system in the lead-acid battery workers.
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Affiliation(s)
- P Kumar
- Industrial Toxicology Research Centre, Lucknow, India
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Abstract
For the analysis of time to event data in contraceptive studies when individuals are subject to competing causes for discontinuation, some authors have recently advocated the use of the cumulative incidence rate as a more appropriate measure to summarize data than the complement of the Kaplan-Meier estimate of discontinuation. The former method estimates the rate of discontinuation in the presence of competing causes, while the latter is a hypothetical rate that would be observed if discontinuations for the other reasons could not occur. The difference between the two methods of analysis is the continuous time equivalent of a debate that took place in the contraceptive literature in the 1960s, when several authors advocated the use of net (adjusted or single decrement life table rates) rates in preference to crude rates (multiple decrement life table rates). A small simulation study illustrates the interpretation of the two types of estimate - the complement of the Kaplan-Meier estimate corresponds to a hypothetical rate where discontinuations for other reasons did not occur, while the cumulative incidence gives systematically lower estimates. The Kaplan-Meier estimates are more appropriate when estimating the effectiveness of a contraceptive method, but the cumulative incidence estimates are more appropriate when making programmatic decisions regarding contraceptive methods. Other areas of application, such as cancer studies, may prefer to use the cumulative incidence estimates, but their use should be determined according to the application.
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Affiliation(s)
- T M Farley
- Department of Reproductive Health and Research, World Health Organization, 20 Avenue Appia, 1211 Geneva 27, Switzerland.
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Ali MM, Babiker AG, Cleland JG. Analysis of failure time hierarchical data in the presence of competing risks with application to oral contraceptive pill use in Egypt. Stat Med 2001; 20:3611-24. [PMID: 11746341 DOI: 10.1002/sim.1090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/12/2022]
Abstract
Problems of practical interest in the analysis of data on contraceptive use, from Demographic and Health Surveys (DHS), include the estimation of the cause-specific probability of discontinuation by time t (the cumulative incidence function), in the presence of other competing causes and the evaluation of the effect of covariates on the cause-specific hazards of discontinuation. Methods of analysis of failure time data with competing risks are by now fairly well developed in the case of a simple random sample. However, the data from the DHS are clustered by geographical areas and include multiple episodes per woman. For a marginal (population average) approach, we propose using methods developed for simple random samples with standard errors calculated using a double bootstrap to take account of the clustered hierarchical nature of the data. In the conditional approach, the cause-specific hazards are modelled as log-linear functions of the covariates conditional on random effects of clusters and women, using a three-level multinomial discrete-time logit model. The methods are applied to data from Egypt 1992 DHS on the oral contraceptive pill use.
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Affiliation(s)
- M M Ali
- Centre for Population Studies, London School of Hygiene & Tropical Medicine, 49-51 Bedford Square, London WC1B 3DP, UK.
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Abstract
Whether the link, found in Benin, between postnatal abstinence and husbands' extramarital contacts can be generalized to other West African countries is assessed in this study. Data from the 1994 Demographic and Health Survey, Côte d'Ivoire, obtained from monogamous husbands concerning their extramarital sexual behavior in the two months preceding the survey were linked to data reported by wives concerning postnatal abstinence over the same time period. Logistic regression was applied to assess the link between these two factors, net of the effects of possible confounders. A significant effect of postnatal abstinence on the probability that the husband reported at least one extramarital partner was found. Unprotected extramarital sex was two times more common among men who observed conjugal abstinence than it was among other men. Other predictors of extramarital sex were urban-rural residence, region, education, and whether or not husband and wife had the same religious affiliation. Because condom use is low in this population, the protective effect of marital abstinence is offset by an increased probability that husbands will seek extramarital partners during the postpartum period. The results confirm the earlier findings for Benin and can likely be generalized to most of West Africa.
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Affiliation(s)
- M M Ali
- London School of Hygiene & Tropical Medicine, Department of Epidemiology and Population Health, 49-51 Bedford Square, London WC1B3DP
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Abstract
Indicators of family planning service access and quality were generated using the Egypt DHS-I (1988) and the Egypt Service Availability Survey (1989), and linked to episodes of contraceptive pill use. Multilevel analysis was used to ascertain whether or not these access and quality indicators influence the continuation of pill use, net of women's socioeconomic, demographic and motivational characteristics. A model with random components at the cluster and women levels was fitted for all reasons of discontinuation, except desire for pregnancy, at 24 months of use. Net of women's background characteristics, the results show that facilities with smaller numbers of health personnel trained in family planning, a lack of access to facilities with female doctors and a lack of range of available methods are associated with a high risk of discontinuation of pill use for all reasons except desire for pregnancy.
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Affiliation(s)
- M M Ali
- Centre for Population Studies, London School of Hygiene & Tropical Medicine
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Awan MS, Qureshi HU, Sheikh AA, Ali MM. Vestibular schwannomas: clinical presentation, management and outcome. J PAK MED ASSOC 2001; 51:63-7. [PMID: 11321873] [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: 02/19/2023]
Abstract
OBJECTIVE To review the demographic trends clinical spectrum, diagnosis, management and out come of patients with vestibular Schwannoma and to identify areas where improvements are needed. METHODS All patients with vestibular schwannoma admitted to the Aga Khan University Hospital over the past 11 years were reviewed retrospectively. RESULTS The age range of majority of 22 patients analyzed, was 41-50 years (23%). Hearing loss was the most common presenting symptom (96%). Other clinical features included cranial nerve palsies (59%) and headache (55%). Fifty percent had signs of raised intracranial pressure. Neuroimaging revealed "Stage IV b" (tumor distorting the brainstem and compressing the 4th ventricle) in 50% cases. Neurosurgical intervention was carried out in 86%; mainly using the retrosigmoid approach. Postoperative complications included facial nerve palsy in 13 (65%) and hydrocephalus in 5 (25%) patients. Hearing determined clinically was preserved in three patients (14%). One patient died during the inpatient stay. CONCLUSION Presentation of these patients is late and the outcome is poor.
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Affiliation(s)
- M S Awan
- Sections of Neurosurgery and Otolaryngology, Department of Surgery, Aga Khan University, Karachi
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Mohammad MM, Ali MM, Aidarous HM. Immunohistochemical nuclear staining for P53 in nodular scabies. J Egypt Soc Parasitol 2000; 30:661-7. [PMID: 11198364] [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: 04/16/2023]
Abstract
Fifty patients with scabies were included in this study. Clinical, parasitological and histopathological study of all patients was done. P-53 expression was examined, using immunohistochemical techniques. Biopsies of nodular scabies showed atypical changes in the epidermis, the dermis showed dense inflammatory infiltrate. Focal positivity for P-53 have been demonstrated which could favour premalignant changes, and recommend further investigations.
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Affiliation(s)
- M M Mohammad
- Department of Parasitology, Dermatology and Venereology and Pathology, Faculty of Medicine for Girls, Al-Azhar University, Nasr City, Cairo, Egypt
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Al-Salman MM, Fares AM, Rabee HM, Ali MM. Effect of arteriovenous fistula for hemodialysis on limb circulation. Saudi J Kidney Dis Transpl 2000; 11:548-552. [PMID: 18209343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
The number of patients with end-stage renal disease maintained on chronic hemodialysis is increasing progressively. Arteriovenous fistula (AVF) is a common vascular access for hemodialysis, however, its effect on limb distal circulation has not been studied well. Palpation of pulse at the wrist is a crude method of clinical assessment. Over one year period, 26 AVFs were created; 16 at the wrist (61.5%) and ten fistulas at the elbow (38.5%). Six of the latter were through the brachio-basilic approach while the other four were performed by basilic vein transposition. Doppler measurement of both wrist-brachial index (WBI) and finger pressure was carried out for all patients pre-operatively and on the first post-operative day. Of the patients with AVF created at the elbow, there was a decrease of WBI in seven patients (70%) and a decrease of finger pressure in three (30%); one patient (14%) had steal syndrome. Creation of AVF at the wrist resulted in a decrease of WBI in one patient (6.25%) and a decrease of finger pressure in another patient (6.25%). WBI changes as a result of creation of AVF at the elbow were significantly greater than the changes of those fistulas performed at the wrist (P < 0.001). On the other hand, the difference between the effect of both procedures on finger pressure was statistically not significant. These results may help to explain the higher incidence of steal syndrome in patients with elbow fistulas compared to patients with wrist fistulas. Further studies on a larger scale are required to determine the value of non-invasive indices at which AVF creation would have future risk of compromised distal limb circulation.
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Affiliation(s)
- M M Al-Salman
- Department of Surgery, King Khalid University Hospital, Riyadh, Saudi Arabia
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Abstract
BACKGROUND In 1999 UNICEF, in cooperation with the government of Iraq and the local authorities in the "autonomous" (northern Kurdish) region, conducted two similar surveys to provide regionally representative and reliable estimates of child mortality (the subject of this paper) and maternal mortality. METHODS In a cross-sectional household survey in the south/centre of Iraq in February and March, 1999, 23105 ever-married women aged 15-49 years living in sampled households were interviewed by trained interviewers with a structured questionnaire that was developed using the Demographic and Health Surveys questionnaire and following a pre-test. In a similar survey in the autonomous region in April and May 14 035 ever-married women age 15-49 were interviewed. FINDINGS In the south/centre, infant and under-5 mortality increased during the 10 years before the survey, which roughly corresponds to the period following the Gulf conflict and the start of the United Nations sanctions. Infant mortality rose from 47 per 1000 live births during 1984-89 to 108 per 1000 in 1994-99, and under-5 mortality rose from 56 to 131 per 1000 live births. In the autonomous region during the same period, infant mortality declined from 64 to 59 per 1000 and under-5 mortality fell from 80 to 72 per 1000. Childhood mortality was higher among children born in rural areas, children born to women with no education, and in boys, and these differentials were broadly similar in the two regions. INTERPRETATION Childhood mortality clearly increased after the Gulf conflict and under UN sanctions in the south/centre of Iraq, but in the autonomous region since the start of the Oil-for-Food Programme childhood mortality has begun to decline. Better food and resource allocation to the autonomous region contributed to the continued gains in lower mortality, whereas the situation in the south/centre deteriorated despite the high level of literacy in that region.
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Affiliation(s)
- M M Ali
- Department of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, University of London, UK.
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Abstract
Neonatal administration of neurotoxic doses of monosodium-L-glutamate (MSG) to rats causes neuronal necrosis of the hypothalamus along with behavioral abnormalities. In the present study the behavioral effects in rats treated with subneurotoxic doses of MSG (2 mg/g, p.o., for 10 days) at the weaned stage were investigated at day 90 post-dosing. The MSG-treated rats did not show significant changes in any of the components of spontaneous locomotor activity but, after apomorphine challenge, marked decreases in the distance travelled, ambulatory and stereotypic times, and the number of stereotypic movements with an increase in the resting time were observed. Significant decrease in the active avoidance learning performance was observed in the MSG-treated rats in the learning (acquisition) phase without any changes in the extinction and relearning phases. The results indicate that exposure to MSG in early life in rats could lead to subtle behavioral aberrations in late adulthood.
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Affiliation(s)
- M M Ali
- Neurotoxicology Section, Industrial Toxicology Research Centre, P.O. Box 80, M.G. Marg, Lucknow, India
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