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Your search keyword '"Zahedur, Rahman"' showing total 14 results
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14 results on '"Zahedur, Rahman"'

1. Exploring the antioxidant and antimicrobial potential of three common seaweeds of Saint Martin's Island of Bangladesh

Author

Omma Honey, Sheikh Arafat Islam Nihad, Md. Atiar Rahman, Md. Mezanur Rahman, Mahibul Islam, and Mohammed Zahedur Rahman Chowdhury

Subjects
Antimicrobial activity, Antioxidant activity, DPPH, Phytochemicals, Seaweeds, Science (General), Q1-390, Social sciences (General), H1-99
Abstract

Antioxidants, which have long been deemed an indispensable guardian of human health, play a pivotal role in bolstering the body's defense against a plethora of diseases. Three well-recognized seaweeds in Bangladesh, including Caulerpa racemosa, Padina tetrastromatica, and Hypnea musciformis, were subjected to meticulous analysis to reveal their phytochemical composition, antioxidant activity, and antimicrobial efficacy using advanced spectroscopic and disc diffusion methods. Intriguingly, we observed that C. racemosa emerges as frontrunners, possessing a substantial arsenal of phenol (143.08 ± 18.51 mg gallic acid equivalent g─1) and flavonoid (63.79 ± 2.16 mg rutin equivalent g─1). More fundamentally, C. racemosa exhibits a notable enrichment in the content of tannin (73.58 mg RE g─1) and chlorophyll (13.50 mg g─1), as well as, antioxidant capacity (4457.67 μg g─1). P. tetrastromatica, on the other hand, displayed commendable effectiveness in scavenging the DPPH radical, with percentages ranging from 53.98 to 62.17%. In terms of hydroxyl radical (OH•) scavenging activity, C. racemosa exhibited the highest efficacy at 400 g mL─1. Fascinatingly, C. racemosa exhibited an impressive antioxidant potential, as evidenced by its exceptionally low IC50 value of 5.58 μg mL−1 for OH• scavenging, whereas P. tetrastromatica showed impressively low value of 0.96 μg mL−1 for DPPH scavenging. Although the three seaweeds demonstrated limited efficacy against a spectrum of five human pathogenic bacteria, their potential as abundant sources of antioxidants remains unscathed. Notably, heatmap and PCA analysis revealed that C. racemosa and P. tetrastromatica emerge as the leading contender for studied antioxidant compounds, demonstrating their proclivity for antioxidant extraction, a trait that could be exploited for large-scale production of these valuable compounds.

Published
2024
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5. Length-Based Stock Assessment for the Data-Poor Bombay Duck Fishery from the Northern Bay of Bengal Coast, Bangladesh

Author

Mohammed Shahidul Alam, Qun Liu, Petra Schneider, Mohammad Mojibul Hoque Mozumder, Mohammad Zahedur Rahman Chowdhury, Mohammad Muslem Uddin, Md. Mostafa Monwar, Md. Enamul Hoque, and Suman Barua

Subjects
Bombay duck, exploitation, spawning potential ratio, length-based indicators, overexploitation, low SPR, Naval architecture. Shipbuilding. Marine engineering, VM1-989, Oceanography, GC1-1581
Abstract

The Bombay duck (Harpadon nehereus) forms the second-largest single-species marine fishery in Bangladesh and therefore has a significant impact on the local economy, providing employment, food, and nutrition to thousands of people. Despite the immense importance, this fishery has never been a priority for the relevant regulatory authorities. To enhance the sustainability of this fishery, an effective management policy based on the scientific evaluation of the current stock’s status is urgently required. Therefore, this study used three methodological approaches (traditional size structure-based stock assessment to reveal current exploitation status; the length-based spawning potential ratio (LB-SPR) to evaluate the stock’s spawning biomass; and Froese’s sustainability indicators for sustainable fishing) to conduct a thorough assessment of the Bombay duck stock to establish basic standards for the sustainable management of this fishery. The results revealed that this fishery is presently suffering from overexploitation and the stock’s spawning biomass (SPR = 8%) is below the limit reference point because of the juvenile-oriented fishing behavior of the fishery. Based on the outputs, this study recommended the mesh size regulation of the set bag nets (SBNs) (5 cm mesh size for the codend) to ensure not to catch immature fishes with a length equal to or smaller than 17.95 cm; and reduce the existing number of SBNs by half to reduce fishing pressure on the stock to ensure the sustainability of this fishery.

Published
2022
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6. Prevalence and risk factors for uveitis in spondyloarthritis

Author

Mst. Rupali Yasmin, Md. Nazrul Islam, Zahedur Rahman Pannu, Mohammad Abul Kalam Azad, and M. Sheikh Giash Uddin

Subjects
Uveitis, Rheumatology, Risk Factors, Spondylarthritis, Prevalence, Humans, Spondylitis, Ankylosing, Severity of Illness Index
Abstract

To determine the prevalence and risk factors for uveitis in spondyloarthritis (SpA) patients.A total of 225 patients who fulfilled Assessment of Spondyloarthritis International Society classification criteria for axial and peripheral SpA were enrolled. The diagnosis of uveitis was confirmed by an ophthalmologist. From medical records and from clinical evaluation associated information like disease duration, and human leukocyte antigen B27 was collected. Relevant laboratory tests were done and disease severity was assessed using Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Ankylosing Spondylitis Disease Activity Score - erythrocyte sedimentation rate and C-reactive protein. Characteristics of uveitis positive and uveitis negative groups were compared. Multivariate logistic regression analysis was done for the risk factors, and P values.05 were considered significant.Prevalence of uveitis was 18.7%. The disease duration was 9.3 ± 7 years and 5.4 ± 4.5 years in uveitis and no uveitis groups respectively (P ≤ .001). Family history of SpA was positive in 45.2% in the uveitis group (P ≤ .001). The frequency of axial SpA was 92.9% and 73.8% in the uveitis and no uveitis groups respectively (P ≤ .008). The mean BASDAI was 2.4 ± 1.9 and 3.3 ± 2.8 in uveitis and no uveitis groups respectively (P = .050). In multivariate logistic regression analysis, among the selected variables, family history of SpA (odds ratio [OR] =3.697; 95% CI =1.616-8.457; P = .002) and duration of disease (OR =1.089; 95% CI =1.004-1.181; P = .039) were independently associated with the occurrence of uveitis.The prevalence of uveitis was 18.7%. The family history and the disease duration of SpA were independently associated with uveitis.

Published
2022

8. Current practice in the management of ocular toxoplasmosis

Author

Yogeswaran, Kengadhevi, Furtado, João M, Bodaghi, Bahram, Matthews, Janet M, Accorinti, Massimo, Aniruddha, Agarwal, Mamta, Agarwal, Seong Joon Ahn, Nurettin, Akyol, Carlos, Alvarez, Radgonde, Amer, Sofia, Androudi, Cheryl, Arcinue, Lourdes, Arellanes-Garcia, J Fernando Arevalo, Cesar, Arrieta-Bechara, Joseba, Artaraz, Ashraf, Ata, Viera Kalinina Ayuso, Kalpana, Babu, Reema, Bansal, Matthias, Becker, Lyll Karen Bigornia-Arriola, Jyotirmay, Biswas, Ana, Blanco-Esteban, Bahram, Bodaghi, Marcelo, Bursztyn, Maria Jose Capella, Ester, Carreño, Wei-Chun, Chan, Yo-Chen, Chang, Yu-Jang, Chao, Rashel, Cheja-Kalb, Luca, Cimino, Kåre, Clemmensen, Lidia, Cocho, Luz Elena Concha-Del-Rio, Diana, Conrad, Dipankar, Das, Janet, Davis, Joke De Boer, Ekaterina, Denisova, Larissa, Derzko-Dzulynsky, Luca De Simone, Christoph, Deuter, Jesús, Díaz-Cascajosa, Oleksandra, Dorokhova, Gonzalo, Duarte, Nazanin, Ebrahimiadib, Sivan, Elyashiv, Parisa, Emami-Naeini, Marie Helene Errera, Alex, Fonollosa, Eric, Fortin, Samantha, Fraser-Bell, Marion, Funk, Manuel, Garza-Leon, Justus, Garweg, Zsuzsanna, Géhl, Raz, Gepstein, Terese, Gerges, Alex, Gimenez, Hiroshi, Goto, Chloe, Gottlieb, Konstantin, Gugleta, Vishali, Gupta, Avinash, Gurbaxani, Zohar, Habot-Wilner, Anthony, Hall, Noriyasu, Hashida, Christopher, Henry, Maryam, Hosseini, Chen, Hsi-Fu, Boonsiri, Hunchangsith, De-Kuang, Hwang, Yih Shiou Hwang, Alessandro, Invernizzi, Salam Saeb Iriqat, Hamisah, Ishak, Bulbul, Islam, Chiharu, Iwahashi, Margarita, Jódar-Márquez, Bouleau, Julien, Toshikatsu, Kaburaki, Sibel, Kadayifçilar, Koju, Kamoi, Kashyap, Kansupada, Tzu-En, Kao, Alexander, Kaplan, Hiroshi, Keino, John, H Kempen, Moncef, Khairallah, Min, Kim, Seong-Woo, Kim, Alexandra, Kozyreff, Robert, Kuijpers, Sentaro, Kusuhara, Timothy Y, Y Lai, Jenny, Laithwaite, Blerta, Lang, Maria Igo Larrocea, Caspers, Laure, Christopher Seungkyu Lee, Ji Hwan Lee, Lyndell, Lim, Victor, Llorenç, Ann-Marie, Lobo-Chan, Preeyachan, Lourthai, Padmamalini, Mahendradas, Dorine, Makhoul, Irene Redondo Marcos, Cynthia Espinosa Martinez, Lucía, Martínez-Costa, Peter, Mccluskey, Ilhem, Mili-Boussen, Elisabetta, Miserocchi, Manabu, Mochizuki, Shelina Oli Mohamed, Philip, I Murray, Kei, Nakai, Satoko, Nakano, Nakhoul, Nakhoul, Kenichi, Namba, Heloisa, Nascimento, Piergiorgio, Neri, Nor Fariza Ngah, John, Nguyen, Quan Dong Nguyen, Rachael, Niederer, Aya, Oguma, Shigeaki, Ohno, Kouichi, Ohta, Annabelle, A Okada, Narciss, Okhravi, Pinar, Özdal, Yılmaz, Özyazgan, Alan, Palestine, Paroli, Maria Pia, Jorge Aa Partida, Carlos, Pavesio, Eduard, Pedemonte-Sarrias, Francesco, Pichi, Lefebvre, Pierre, Uwe, Pleyer, Joanna, Przeździecka-Dołyk, Aleksandra, Radosavljevic, Zahedur, Rahman, Stephanie Voorduin Ramos, Narsing, Rao, Ola, Rauer, Lia Judice Relvas, Josephine, Richards, Alejandro, Rodriguez-Garcia, Maite, Sainz-de-la-Maza, Beatriz, Sánchez, Hla, Sandar, Shaul, Sar, Luiz Pb Schmidt, Yuen Yew Sen, Juan Ls Sevila, Shwu-Jiuan, Sheu, Shiri, Shulman, Monica Cunha Signorelli, Sukhum, Silpa-Archa, Justine, Smith, Wendy, Smith, Ovi, Sofia, Thanapong, Somkijrungroj, Sreekanth, Sreekantam, Sridharan, Sudharshan, Hiroshi, Takase, Masaru, Takeuchi, Christoph, Tappeiner, Mei-Ling, Tay-Kearney, Barbara, Teuchner, Jennifer, E Thorne, Sara, Touhami, Victoria, Toumanidou, Peter, Trittibach, Ilknur, Tugal-Tutkun, Mayjane, Tumulak, Anna Nur Utami, Julie, Vadboncoeur, Luc Van Os, Daniel Vitor Vasconcelos-Santos, Erika, Vazquez, François, Willermain, May Za Win, Lihteh, Wu, Nilüfer, Yalçındağ, Ryoji, Yanai, Peizeng, Yang, Nobuyo, Yawata, Oleksandra, Zborovska, Manfred, Zierhut, Mar Esteban-Ortega Smith, and Justine, R

Subjects
Cellular and Molecular Neuroscience, Ophthalmology, retina, inflammation, infection, Sensory Systems
Abstract

BackgroundOcular toxoplasmosis is common across all regions of the world. Understanding of the epidemiology and approach to diagnosis and treatment have evolved recently. In November 2020, an international group of uveitis-specialised ophthalmologists formed the International Ocular Toxoplasmosis Study Group to define current practice.Methods192 Study Group members from 48 countries completed a 36-item survey on clinical features, use of investigations, indications for treatment, systemic and intravitreal treatment with antiparasitic drugs and corticosteroids, and approach to follow-up and preventive therapy.ResultsFor 77.1% of members, unilateral retinochoroiditis adjacent to a pigmented scar accounted for over 60% of presentations, but diverse atypical presentations were also reported. Common complications included persistent vitreous opacities, epiretinal membrane, cataract, and ocular hypertension or glaucoma. Most members used clinical examination with (56.8%) or without (35.9%) serology to diagnose typical disease but relied on intraocular fluid testing—usually PCR—in atypical cases (68.8%). 66.1% of members treated all non-pregnant patients, while 33.9% treated selected patients. Oral trimethoprim–sulfamethoxazole was first-line therapy for 66.7% of members, and 60.9% had experience using intravitreal clindamycin. Corticosteroid drugs were administered systemically by 97.4%; 24.7% also injected corticosteroid intravitreally, almost always in combination with an antimicrobial drug (72.3%). The majority of members followed up all (60.4%) or selected (35.9%) patients after resolution of acute disease, and prophylaxis against recurrence with trimethoprim–sulfamethoxazole was prescribed to selected patients by 69.8%.ConclusionOur report presents a current management approach for ocular toxoplasmosis, as practised by a large international group of uveitis-specialised ophthalmologists.

Published
2022

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