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Rahman Z, Padhy HP, Dandekar MP. Cell-Free Supernatant of Lactobacillus rhamnosus and Bifidobacterium breve Ameliorates Ischemic Stroke-Generated Neurological Deficits in Rats. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10256-w. [PMID: 38656733 DOI: 10.1007/s12602-024-10256-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2024] [Indexed: 04/26/2024]
Abstract
The beneficial effects of probiotics, postbiotics, and paraprobiotics have already been registered in managing ischemic stroke-generated neuroinflammation and gut dysbiosis. Herein, we examined the impact of cell-free supernatant (CFS) obtained from probiotics (Lactobacillus rhamnosus UBLR-58 and Bifidobacterium breve UBBr-01) in a rat transient middle cerebral artery occlusion (MCAO) model of focal cerebral injury. Pre-MCAO supplementation of probiotics (2 × 109 CFU/mL) for 21 days or CFS (1 mL/rat) for 7 days protect the MCAO-induced somatosensory and motor impairments recorded at 24 h and 72 h after reperfusion in foot-fault, rotarod, adhesive removal, and vibrissae-evoked forelimb placing tests. We also noted the reduced infarct area and neuronal degradation in the right hemisphere of probiotics- and CFS-recipient MCAO-operated animals. Moreover, MCAO-induced altered concentrations of glial-fibrillary acidic protein, NeuN, zonula occludens-1 (ZO-1), TLR4, IL-1β, IL-6, and TNF-α, as well as matrix metalloproteinase-9 (MMP9) were reversed in the treatment groups. Probiotics and CFS treatment ameliorated the elevated levels of IL-6, IL-1β, and MMP9 in the blood plasma of rats. The disrupted microbial phyla, Firmicutes-to-Bacteroides ratio, villi/crypt ratio, and decreased mucin-producing goblet cells, ZO-1, and occludin in the colon of MCAO-operated rats were recovered following probiotics and CFS treatment. NMR characterization of CFS and rat blood plasma revealed the presence of several important bacterial metabolites. These findings suggest that the CFS obtained from Lactobacillus rhamnosus UBLR-58 and Bifidobacterium breve UBBr-01 has the propensity to improve MCAO-generated neurological dysfunctions in rats by dampening neuroinflammation and modulating the gut-brain axis modulators.
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Affiliation(s)
- Ziaur Rahman
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, PIN 500037, Telangana, India
| | - Hara Prasad Padhy
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Manoj P Dandekar
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, PIN 500037, Telangana, India.
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Rahman Z, Shaikh AS, Rao KV, Dandekar MP. Oxyberberine protects middle cerebral artery occlusion triggered cerebral injury through TLR4/NLRP3 pathway in rats. J Chem Neuroanat 2024; 136:102393. [PMID: 38246265 DOI: 10.1016/j.jchemneu.2024.102393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/18/2023] [Accepted: 01/17/2024] [Indexed: 01/23/2024]
Abstract
Cerebral ischemia is a life-threatening health concern that leads to severe neurological complications and fatalities worldwide. Although timely intervention with clot-removing agents curtails serious post-stroke neurological dysfunctions, no effective neuroprotective intervention is available for addressing post-recanalization neuroinflammation. Herein, for the first time we studied the effect of oxyberberine (OBB), a derivative of berberine, on transient middle cerebral artery occlusion (MCAO)-generated neurological consequences in Sprague-Dawley rats. The MCAO-operated rats exhibited significant somatosensory and sensorimotor dysfunctions in adhesive removal, foot fault, paw whisker, and rotarod assays at 1 and 3 days post-surgery. These MCAO-generated neurological deficits were prevented in OBB-treated (50 and 100 mg/kg) rats, and also coincided with a smaller infarct area (in 2,3,5-triphenyl tetrazolium chloride staining) and decreased neuronal death (in cresyl violet staining) in the ipsilateral hemisphere of these animals. The immunostaining of neuronal nuclear protein (NeuN) and glial-fibrillary acidic protein (GFAP) also echoes the neuroprotective nature of OBB. The increased expression of neuroinflammatory and blood-brain barrier tight junction proteins like toll-like receptor 4 (TLR4), TRAF-6, nuclear factor kappa B (NF-κB), pNF-κB, nNOS, ASC, and IKBα in the ipsilateral part of MCAO-operated rats were restored to normal following OBB treatment. We also observed the decline in plasma levels/mRNA transcription of TNF-α, IL-1β, NLRP3, IL-6, and matrix metalloproteinase-9 and increased expression of occludin and claudin in OBB-treated rats. These outcomes imply that OBB may prevent the MCAO-induced neurological consequences and neuroinflammation by interfering with TLR4 and NLRP3 signaling in rats.
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Affiliation(s)
- Ziaur Rahman
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Arbaz Sujat Shaikh
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - K Venkata Rao
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Manoj P Dandekar
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India.
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Ahmad SS, Siddiqui MF, Maqbool F, Ullah I, Adnan F, Albutti A, Alsowayeh N, Rahman Z. Combating Cariogenic Streptococcus mutans Biofilm Formation and Disruption with Coumaric Acid on Dentin Surface. Molecules 2024; 29:397. [PMID: 38257309 PMCID: PMC10818395 DOI: 10.3390/molecules29020397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 12/17/2023] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Streptococcus mutans, the primary cause of dental caries, relies on its ability to create and sustain a biofilm (dental plaque) for survival and pathogenicity in the oral cavity. This study was focused on the antimicrobial biofilm formation control and biofilm dispersal potential of Coumaric acid (CA) against Streptococcus mutans on the dentin surface. The biofilm was analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) viability assay, microtiter plate assay, production of extracellular polymeric substances (EPSs), florescence microscopy (surface coverage and biomass μm2) and three-dimensional (3D) surface plots. It was observed that CA at 0.01 mg/mL reduced bacterial growth by 5.51%, whereases at 1 mg/mL, a significant (p < 0.05) reduction (98.37%) was observed. However, at 1 mg/mL of CA, a 95.48% biofilm formation reduction was achieved, while a 73.45% biofilm dispersal (after 24 h. treatment) was achieved against the preformed biofilm. The MTT assay showed that at 1 mg/mL of CA, the viability of bacteria in the biofilm was markedly (p < 0.05) reduced to 73.44%. Moreover, polysaccharide (EPS) was reduced to 24.80 μg/mL and protein (EPS) to 41.47 μg/mL. ImageJ software (version 1.54 g) was used to process florescence images, and it was observed that the biofilm mass was reduced to 213 (μm2); the surface coverage was reduced to 0.079%. Furthermore, the 3D surface plots showed that the untreated biofilm was highly dense, with more fibril-like projections. Additionally, molecular docking predicted a possible interaction pattern of CA (ligand) with the receptor Competence Stimulating Peptide (UA159sp, PDB ID: 2I2J). Our findings suggest that CA has antibacterial and biofilm control efficacy against S. mutans associated with dental plaque under tested conditions.
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Affiliation(s)
- Syed Sohail Ahmad
- Department of Microbiology, Hazara University, Mansehra 21300, Pakistan; (S.S.A.); (F.M.)
| | | | - Farhana Maqbool
- Department of Microbiology, Hazara University, Mansehra 21300, Pakistan; (S.S.A.); (F.M.)
| | - Ihsan Ullah
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Fazal Adnan
- Atta Ur Rahman School of Applied Biosciences, National University of Sciences & Technology, Islamabad 44000, Pakistan;
| | - Aqel Albutti
- Department of Medical Biotechnology, College of Applied Medical Sciences, Qassim University, Buraydah 51452, Saudi Arabia
| | - Noorah Alsowayeh
- Department of Biology, College of Science in Al-Zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia;
| | - Ziaur Rahman
- Department of Microbiology, Abdul Wali Khan University, Mardan 23200, Pakistan;
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Tentu PM, Bazaz MR, Pasam T, Shaikh AS, Rahman Z, Mourya A, Kaki VR, Madan J, Dandekar MP. Oxyberberine an oxoderivative of berberine confers neuroprotective effects in controlled-cortical impact mouse model of traumatic brain injury. Int J Neurosci 2023:1-16. [PMID: 37982448 DOI: 10.1080/00207454.2023.2286209] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 11/15/2023] [Indexed: 11/21/2023]
Abstract
BACKGROUND Traumatic brain injury (TBI) is known as a silent epidemic that causes many deaths and disabilities worldwide. We examined the response of oxyberberine (OBB) in lipopolysaccharide-stimulated BV2 microglial cells and a controlled-cortical impact (CCI) mouse model of TBI. METHODS We synthesized OBB from berberine, and also prepared OBB-nanocrystals (OBB-NC). Male C57BL/6 mice were used for CCI surgery, and post-CCI neurobehavioral deficits were assessed from 1 h after injury through 21 days post-injury (dpi). RESULTS OBB treatment reduced the lipopolysaccharide-triggered elevated levels of reactive oxygen species, nitric oxide, and nuclear factor kappa B (NF-κB) in BV2 microglial cells, indicating a neuroprotective potential. CCI-operated mice exhibited significant neurological deficits on 1, 3, and 5 dpi in neurological severity scoring and rotarod assay. OBB (25 and 50 mg/kg/day) and OBB-NC (3 mg/kg/day) ameliorated these neurological aberrations. Mice subjected to CCI surgery also displayed anxiogenic- and depression-like behaviours, and cognitive impairments in forced-swimming test and elevated-zero maze, and novel object recognition task, respectively. Administration of OBB reduced these long-term neuropsychiatric complications, and also levels of toll-like receptor 4 (TLR4), high-motility group protein 1 (HMGB1), NF-κB, tumour necrosis factor-alpha and interleukin 6 cytokines in the ipsilateral cortex of mice. CONCLUSION We suggest that the administration of OBB offers neuroprotective effects via inhibition of HMGB1-mediated TLR4/NFκB pathway.
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Affiliation(s)
- Priya Mounika Tentu
- Department of Biological Sciences (Pharmacology and Toxicology), National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Mohd Rabi Bazaz
- Department of Biological Sciences (Pharmacology and Toxicology), National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Tulasi Pasam
- Department of Biological Sciences (Pharmacology and Toxicology), National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Arbaz Sujat Shaikh
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Ziaur Rahman
- Department of Biological Sciences (Pharmacology and Toxicology), National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Atul Mourya
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Venkata Rao Kaki
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Jitender Madan
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Manoj P Dandekar
- Department of Biological Sciences (Pharmacology and Toxicology), National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
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Laxmikeshav K, Rahman Z, Mahale A, Gurukkala Valapil D, Sharma P, George J, Phanindranath R, Dandekar MP, Kulkarni OP, Nagesh N, Shankaraiah N. Benzimidazole derivatives as tubulin polymerization inhibitors: Design, synthesis and in vitro cytotoxicity studies. Bioorg Med Chem Lett 2023; 96:129494. [PMID: 37797804 DOI: 10.1016/j.bmcl.2023.129494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/28/2023] [Accepted: 10/01/2023] [Indexed: 10/07/2023]
Abstract
A new class of benzimidazole derivatives as tubulin polymerization inhibitors has been designed and synthesized in this study. The in vitro anticancer profile of the developed molecules was reconnoitred on selected human cancer cells. The highest cytotoxicity was illustrated by compounds 7n and 7u with IC50 values ranging from 2.55 to 17.89 µM with specificity toward SK-Mel-28 cells. They displayed 5-fold less cytotoxicity towards normal rat kidney epithelial NRK52E cells, which implies that they are not harmful to normal, healthy cells. The cellular staining procedures like AO/EB, DCFDA, and DAPI were applied to comprehend the inherent mechanism of apoptosis which displayed nuclear and morphological alterations. The Annexin V binding and JC-1 studies were executed to evaluate the extent of apoptosis and the decline in mitochondrial transmembrane potential in SK-Mel-28 cell lines. Compound 7n dose-dependently arrested the G2/M phase of the cell cycle and the target-based outcomes proposed tubulin polymerization inhibition by 7n (IC50 of 5.05±0.13 μM). Computational studies were also conducted on the tubulin protein (PDB ID: 3E22) to investigate the stabilized binding interactions of compounds 7n and 7u with tubulin, respectively.
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Affiliation(s)
- Kritika Laxmikeshav
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Ziaur Rahman
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Ashutosh Mahale
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Durgesh Gurukkala Valapil
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Pravesh Sharma
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Joel George
- CSIR-Centre for Cellular and Molecular Biology, Medical Biotechnology Complex, ANNEXE II, Uppal Road, Hyderabad 500007, India
| | - Regur Phanindranath
- CSIR-Centre for Cellular and Molecular Biology, Medical Biotechnology Complex, ANNEXE II, Uppal Road, Hyderabad 500007, India
| | - Manoj P Dandekar
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India.
| | - Onkar P Kulkarni
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Narayana Nagesh
- CSIR-Centre for Cellular and Molecular Biology, Medical Biotechnology Complex, ANNEXE II, Uppal Road, Hyderabad 500007, India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India.
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Shaik MG, Joshi SV, Akunuri R, Rana P, Rahman Z, Polomoni A, Yaddanapudi VM, Dandekar MP, Srinivas N. Small molecule inhibitors of NLRP3 inflammasome and GSK-3β in the management of traumatic brain injury: A review. Eur J Med Chem 2023; 259:115718. [PMID: 37573828 DOI: 10.1016/j.ejmech.2023.115718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 07/28/2023] [Accepted: 08/08/2023] [Indexed: 08/15/2023]
Abstract
Traumatic brain injury (TBI) is a debilitating mental condition which causes physical disability and morbidity worldwide. TBI may damage the brain by direct injury that subsequently triggers a series of neuroinflammatory events. The activation of NLRP3 inflammasome and dysregulated host immune system has been documented in various neurological disorders such as TBI, ischemic stroke and multiple sclerosis. The activation of NLRP3 post-TBI increases the production of pro-inflammatory cytokines and caspase-1, which are major drivers of neuroinflammation and apoptosis. Similarly, GSK-3β regulates apoptosis through tyrosine kinase and canonical Wnt signalling pathways. Thus, therapeutic targeting of NLRP3 inflammasome and GSK-3β has emerged as promising strategies for regulating the post-TBI neuroinflammation and neurobehavioral disturbances. In this review, we discuss the identification & development of several structurally diverse and pharmacologically interesting small molecule inhibitors for targeting the NLRP3 inflammasome and GSK-3β in the management of TBI.
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Affiliation(s)
- Mahammad Ghouse Shaik
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India
| | - Swanand Vinayak Joshi
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India
| | - Ravikumar Akunuri
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India; Ellen and Ronald Caplan Cancer Center, The Wistar Institute, Philadelphia, PA, 19104, USA
| | - Preeti Rana
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India
| | - Ziaur Rahman
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500 037, India
| | - Anusha Polomoni
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India
| | - Venkata Madhavi Yaddanapudi
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India
| | - Manoj P Dandekar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500 037, India.
| | - Nanduri Srinivas
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500 037, India.
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Ghuge S, Rahman Z, Bhale NA, Dikundwar AG, Dandekar MP. Multistrain probiotic rescinds quinpirole-induced obsessive-compulsive disorder phenotypes by reshaping of microbiota gut-brain axis in rats. Pharmacol Biochem Behav 2023; 232:173652. [PMID: 37804865 DOI: 10.1016/j.pbb.2023.173652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/30/2023] [Accepted: 10/02/2023] [Indexed: 10/09/2023]
Abstract
Obsessive-compulsive disorder (OCD) is a disabling mental condition that poses recurring bothersome intrusive thoughts, obsessions, and compulsions. Considering the positive impact of probiotics on neuropsychiatric disorders, herein, we investigated the effect of multistrain probiotic (Bifidobacterium lactis UBBLa-70, Bacillus coagulans Unique IS-2, Lactobacillus rhamnosus UBLR-58, Lactobacillus plantarum UBLP-40, Bifidobacterium infantis UBBI-01, Bifidobacterium breve UBBr-01, and glutamine) in the management of OCD-like phenotype in rats. Rats injected with quinpirole for 5 weeks showed an increased number of marble burying and self-grooming episodes. Quinpirole-injected animals also did less head dipping in the hole board test and avoided exploration of open spaces in the elevated-plus maze. These repetitive, compulsive, self-directed, and anxiety-like phenotypes were abolished after 8-week of multistrain probiotic treatment. The probiotic formulation also prevented the elevated mRNA expression of interleukin-6, tumor-necrosis factor-α, and C-reactive protein in the amygdala and dysregulated levels of 5-hydroxytryptamine, dopamine, and noradrenaline in the frontal cortex of quinpirole-injected rats. The level of brain-derived neurotrophic factor in the frontal cortex remained unaffected across the groups. The altered levels of goblet cells and crypt-to-villi ratio in quinpirole rats were prevented by multistrain probiotic treatment. The results of 16S-rRNA gene-sequencing of gut microbiota from feces contents revealed an elevation in the abundance of Allobaculum and Bifidobacterium species (specifically Bifidobacterium animalis), while the presence of Lactobacillus species (including Lactobacillus reuteri and Lactobacillus vaginalis) exhibited a decline in quinpirole-induced rats. These results imply that modifying the gut-brain axis may be a possible mechanism by which selective multistrain probiotic therapy prevents OCD-like behaviors.
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Affiliation(s)
- Shubham Ghuge
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Ziaur Rahman
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Nagesh A Bhale
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Amol G Dikundwar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Manoj P Dandekar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India.
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Rahman Z, Ghuge S, Dandekar MP. Partial blood replacement ameliorates middle cerebral artery occlusion generated neurological aberrations by intervening TLR4 and NLRP3 cascades in rats. Metab Brain Dis 2023; 38:2339-2354. [PMID: 37402080 DOI: 10.1007/s11011-023-01259-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 06/26/2023] [Indexed: 07/05/2023]
Abstract
Acute ischemic stroke is a catastrophic medical condition that causes severe disability and mortality if the sufferer escapes treatment within a stipulated timeframe. While timely intervention with clot-bursting agents like tissue-plasminogen activators abrogates some post-stroke neurologic deficits, no neuroprotective therapy is yet promisingly addresses the post-recanalization neuroinflammation in post-stroke survivors. Herein, we investigated the effect of partial blood replacement therapy (BRT), obtained from healthy and treadmill-trained donor rats, on neurological deficits, and peripheral and central inflammatory cascades using the ischemia-reperfusion animal paradigm. The cerebral ischemia-reperfusion was induced in rats by occlusion of the middle cerebral artery (MCAO) for 90 min, followed by reperfusion. Rats underwent MCAO surgery displayed remarkable sensorimotor and motor deficits in rotarod, foot fault, adhesive removal, and paw whisker tests till 5 days post-surgery. These behavior abnormalities were ameliorated in the BRT-recipient MCAO rats. BRT also reduced the infarct volume and neuronal death in the ipsilateral hemisphere revealed by TTC and cresyl violet staining compared to the MCAO group. Rats received BRT infusion exhibited the reduced expression of glial fibrillary acidic protein, ionized calcium-binding adaptor molecule-1 (Iba-1), and MyD88 on day 5 post-MCAO in immunohistochemistry and immunofluorescent assays. Moreover, elevated levels of toll-like receptor 4 (TLR4) and mRNA expression of IL-1β, TNF-α, matrix metalloproteinase-9 and NLRP3, and decreased levels of zonula occludens-1 in MCAO rats, were reversed following BRT. These findings suggest that the partial BRT may rescind MCAO-induced neurological dysfunctions and cerebral injury by intervening in the TLR4 and NLRP3 pathways in rats.
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Affiliation(s)
- Ziaur Rahman
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Shubham Ghuge
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Manoj P Dandekar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India.
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Cargill KR, Pifer P, Vargo JAA, Iheagwara UK, Kim S, Kubik MW, Sridharan S, Duvvuri U, Zandberg DP, Rahman Z, Seethala R, Zevallos JP, Ferris RL, Skinner HD. Outcomes of Patients with Oral Cavity Squamous Cell Carcinomas Treated with Adjuvant IMRT with Perineural Invasion. Int J Radiat Oncol Biol Phys 2023; 117:e569-e570. [PMID: 37785737 DOI: 10.1016/j.ijrobp.2023.06.1898] [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] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Patients with advanced oral cavity squamous cell carcinoma (OCSCC) have high rates of recurrence and dismal outcomes. Treatment consists of definitive surgery followed by risk-adapted adjuvant radiation therapy based on pathologic review. Perineural invasion (PNI) is thought to be an intermediate risk factor, leading to clinical uncertainty as to adjuvant therapy in the setting of PNI. We performed a single institution retrospective review of patients with OCSCC treated with adjuvant radiation with or without PNI and examined relapse-free survival (RFS) and overall survival (OS). MATERIALS/METHODS We performed a single-institutional retrospective review of patients with OCSCC treated with adjuvant IMRT +/- chemotherapy after surgical resection from July 2002- August 2021 using our institution's Head and Neck SPORE database. Time to recurrence or death was calculated from end of RT. OCSCC within 5 years of RT was considered a recurrence, beyond this timeframe any OCSCC was considered a new primary. Univariate analysis of predictors for RFS and OS were performed using the Kaplan-Meier method with log-rank test. Factors significant on univariable analysis were entered into parsimonious cox multivariable analysis using forward selection methodology. A p-value <0.05 was considered significant in both analyses. RESULTS In total, 494 patients with OCSCC were identified that received surgery and adjuvant IMRT. In this cohort, 48.8% of patients had pT4 tumors, 62.2% of patients had nodal involvement, and 40.3% of patients had extranodal extension. PNI was present in 63.6% of patients (n = 314). With regards to tumor subsite, 40.9% originated from the oral tongue, 21.5% originated from the gums, 18% originated from the floor of mouth, and 19.6% from the other sites. Median age was 59 years, and median adjuvant RT dose was 63 Gy (Interquartile range [IQR]) 60-66 Gy). The majority of patient received platinum-based chemotherapy (51.8%), and 44.1% of patients did not receive adjuvant chemotherapy. The 3-year RFS and OS with a median follow-up of 32 months (IQR 12-69 months) is presented in Table 1. On univariable analysis for OS, T stage (p = 0.003), N stage (p<0.001), PNI (p = 0.005), extranodal extension (ENE) (p<0.001), margin status (p = 0.038), and chemotherapy (p<0.001) were significant. On multivariable analysis, T stage (p<0.001), N stage (p = 0.010), PNI (p = 0.017), and ENE (p = 0.007) remained significant. Similar results were seen in the RFS analysis. CONCLUSION In this large single institution study, PNI was a significant and independent negative predictive factor for RFS and OS in patients with OCSCC that had received definitive surgery followed by adjuvant IMRT. To our knowledge this is the largest study of its kind, and these findings can help guide clinical decision making for these patients.
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Affiliation(s)
- K R Cargill
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - P Pifer
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - J A A Vargo
- Department of Radiation Oncology, University of Pittsburgh, Pittsburgh, PA
| | - U K Iheagwara
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - S Kim
- Department of Otolaryngology, Eye & Ear Institute, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - M W Kubik
- Department of Otolaryngology, Eye & Ear Institute, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - S Sridharan
- Department of Otolaryngology, Eye & Ear Institute, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - U Duvvuri
- Department of Otolaryngology, Eye & Ear Institute, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - D P Zandberg
- Division of Hematology and Oncology, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Z Rahman
- Division of Hematology and Oncology, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - R Seethala
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - J P Zevallos
- Department of Otolaryngology, Eye & Ear Institute, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - R L Ferris
- Department of Otolaryngology, Eye & Ear Institute, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - H D Skinner
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, PA
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Habib MT, Rahman S, Afrad MH, Howlader AM, Khan MH, Khanam F, Alam AN, Chowdhury EK, Rahman Z, Rahman M, Shirin T, Qadri F. Natural selection shapes the evolution of SARS-CoV-2 Omicron in Bangladesh. Front Genet 2023; 14:1220906. [PMID: 37621704 PMCID: PMC10446972 DOI: 10.3389/fgene.2023.1220906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/20/2023] [Indexed: 08/26/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has evolved to give rise to a highly transmissive and immune-escaping variant of concern, known as Omicron. Many aspects of the evolution of SARS-CoV-2 and the driving forces behind the ongoing Omicron outbreaks remain unclear. Substitution at the receptor-binding domain (RBD) in the spike protein is one of the primary strategies of SARS-CoV-2 Omicron to hinder recognition by the host angiotensin-converting enzyme 2 (ACE2) receptor and avoid antibody-dependent defense activation. Here, we scanned for adaptive evolution within the SARS-CoV-2 Omicron genomes reported from Bangladesh in the public database GISAID (www.gisaid.org; dated 2 April 2023). The ratio of the non-synonymous (Ka) to synonymous (Ks) nucleotide substitution rate, denoted as ω, is an indicator of the selection pressure acting on protein-coding genes. A higher proportion of non-synonymous to synonymous substitutions (Ka/Ks or ω > 1) indicates positive selection, while Ka/Ks or ω near zero indicates purifying selection. An equal amount of non-synonymous and synonymous substitutions (Ka/Ks or ω = 1) refers to neutrally evolving sites. We found evidence of adaptive evolution within the spike (S) gene of SARS-CoV-2 Omicron isolated from Bangladesh. In total, 22 codon sites of the S gene displayed a signature of positive selection. The data also highlighted that the receptor-binding motif within the RBD of the spike glycoprotein is a hotspot of adaptive evolution, where many of the codons had ω > 1. Some of these adaptive sites at the RBD of the spike protein are known to be associated with increased viral fitness. The M gene and ORF6 have also experienced positive selection. These results suggest that although purifying selection is the dominant evolutionary force, positive Darwinian selection also plays a vital role in shaping the evolution of SARS-CoV-2 Omicron in Bangladesh.
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Affiliation(s)
| | - Saikt Rahman
- Institute for Developing Science and Health Initiatives, Dhaka, Bangladesh
| | | | | | | | - Farhana Khanam
- International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - Ahmed Nawsher Alam
- Institute of Epidemiology, Disease Control and Research, Dhaka, Bangladesh
| | - Emran Kabir Chowdhury
- Department of Biochemistry and Molecular Biochemistry, University of Dhaka, Dhaka, Bangladesh
| | - Ziaur Rahman
- International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - Mustafizur Rahman
- International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - Tahmina Shirin
- Institute of Epidemiology, Disease Control and Research, Dhaka, Bangladesh
| | - Firdausi Qadri
- Institute for Developing Science and Health Initiatives, Dhaka, Bangladesh
- International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
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11
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Haque R, Hossain ME, Miah M, Rahman M, Amin N, Rahman Z, Islam MS, Rahman MZ. Monitoring SARS-CoV-2 variants in wastewater of Dhaka City, Bangladesh: approach to complement public health surveillance systems. Hum Genomics 2023; 17:58. [PMID: 37420264 PMCID: PMC10326934 DOI: 10.1186/s40246-023-00505-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/28/2023] [Indexed: 07/09/2023] Open
Abstract
BACKGROUND Wastewater-based epidemiological surveillance has been considered a powerful tool for early detection and monitoring of the dynamics of SARS-CoV-2 and its lineages circulating in a community. This study is aimed to investigate the complexity of SARS-CoV-2 infection dynamics in Dhaka city by examining its genetic variants in wastewater. Also, the study seeks to determine a connection between the SARS-CoV-2 variations detected in clinical testing and those found in wastewater samples. RESULTS Out of 504 samples tested in RT-qPCR, 185 (36.7%) tested positive for SARS-CoV-2 viral RNA. The median log10 concentration of SARS-CoV-2 N gene copies/Liter of wastewater (gc/L) was 5.2, and the median log10 concentration of ORF1ab was 4.9. To further reveal the genetic diversity of SARS-CoV-2, ten samples with ORF1ab real-time RT-PCR cycle threshold (Ct) values ranging from 28.78 to 32.13 were subjected to whole genome sequencing using nanopore technology. According to clade classification, sequences from wastewater samples were grouped into 4 clades: 20A, 20B, 21A, 21J, and the Pango lineage, B.1, B.1.1, B.1.1.25, and B.1.617.2, with coverage ranging from 94.2 to 99.8%. Of them, 70% belonged to clade 20B, followed by 10% to clade 20A, 21A, and 21J. Lineage B.1.1.25 was predominant in Bangladesh and phylogenetically related to the sequences from India, the USA, Canada, the UK, and Italy. The Delta variant (B.1.617.2) was first identified in clinical samples at the beginning of May 2021. In contrast, we found that it was circulating in the community and was detected in wastewater in September 2020. CONCLUSION Environmental surveillance is useful for monitoring temporal and spatial trends of existing and emerging infectious diseases and supports evidence-based public health measures. The findings of this study supported the use of wastewater-based epidemiology and provided the baseline data for the dynamics of SARS-CoV-2 variants in the wastewater environment in Dhaka, Bangladesh.
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Affiliation(s)
- Rehnuma Haque
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh.
- Department of Women's and Children's Health, Uppsala University, Akademiska Sjukhuset, 75185, Uppsala, Sweden.
| | - Mohammad Enayet Hossain
- One Health Laboratory, Infectious Diseases Division, icddr,b, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Mojnu Miah
- One Health Laboratory, Infectious Diseases Division, icddr,b, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Mahbubur Rahman
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Nuhu Amin
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
- Institute for Sustainable Futures, The University of Technology Sydney, 235 Jones St, Ultimo, NSW, 2007, Australia
| | - Ziaur Rahman
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Md Shariful Islam
- Environmental Interventions Unit, Infectious Diseases Division, icddr,b, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
- The School of Public Health, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Mohammed Ziaur Rahman
- One Health Laboratory, Infectious Diseases Division, icddr,b, 68 Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
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12
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Ishfaq M, Shah SZA, Ahmad I, Rahman Z. Multinomial classification of NLRP3 inhibitory compounds based on large scale machine learning approaches. Mol Divers 2023:10.1007/s11030-023-10690-y. [PMID: 37418166 DOI: 10.1007/s11030-023-10690-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
The role of NLRP3 inflammasome in innate immunity is newly recognized. The NLRP3 protein is a family of nucleotide-binding and oligomerization domain-like receptors as well as a pyrin domain-containing protein. It has been shown that NLRP3 may contribute to the development and progression of a variety of diseases, such as multiple sclerosis, metabolic disorders, inflammatory bowel disease, and other auto-immune and auto-inflammatory conditions. The use of machine learning methods in pharmaceutical research has been widespread for several decades. An important objective of this study is to apply machine learning approaches for the multinomial classification of NLRP3 inhibitors. However, data imbalances can affect machine learning. Therefore, a synthetic minority oversampling technique (SMOTE) has been developed to increase the sensitivity of classifiers to minority groups. The QSAR modelling was performed using 154 molecules retrieved from the ChEMBL database (version 29). The accuracy of the multiclass classification top six models was found to fall within ranges of 0.99 to 0.86, and log loss ranges of 0.2 to 2.3, respectively. The results showed that the receiver operating characteristic curve (ROC) plot values significantly improved when tuning parameters were adjusted and imbalanced data was handled. Moreover, the results demonstrated that SMOTE offers a significant advantage in handling imbalanced datasets as well as substantial improvements in overall accuracy of machine learning models. The top models were then used to predict data from unseen datasets. In summary, these QSAR classification models exhibited robust statistical results and were interpretable, which strongly supported their use for rapid screening of NLRP3 inhibitors.
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Affiliation(s)
- Muhammad Ishfaq
- College of Computer Science, Huanggang Normal University, Huanggang, 438000, China
| | - Syed Zahid Ali Shah
- Department of Pathology, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Ijaz Ahmad
- The University of Agriculture Peshawar, Peshawar, 25130, Khyber Pakhtunkhwa, Pakistan
| | - Ziaur Rahman
- College of Computer Science, Huanggang Normal University, Huanggang, 438000, China.
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Chowdhury MM, Warid MM, Mohammed S, Sobhan SA, Haque MN, Quiyum MA, Rahman Z, Mahmud R, Tanjim SM, Rahman MM. Biliary Embryonal Rhabdomyosarcoma: A Case Report. Mymensingh Med J 2023; 32:880-883. [PMID: 37391989] [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: 07/02/2023]
Abstract
A 10 years old boy who was initially diagnosed as choledochal cyst underwent laparotomy. There was presence of necrotic and soft tissue growth within common bile duct (CBD). After extensive toileting of bile duct, a T-tube was placed. His histopathology followed by immunohistochemistry revealed Embryonal Rhabdomyosarcoma. Later the patient received VAC regime chemotherapy. On follow-up imaging, there was no tumour mass in CBD. So, T-tube removed and now the patient is doing well.
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Affiliation(s)
- M M Chowdhury
- Professor Dr Md Mohsen Chowdhury, Professor & Chairman, Hepatobiliary, Pancreatic and Liver Transplant Surgery Department, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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14
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Rahman Z, Bhale NA, Dikundwar AG, Dandekar MP. Multistrain Probiotics with Fructooligosaccharides Improve Middle Cerebral Artery Occlusion-Driven Neurological Deficits by Revamping Microbiota-Gut-Brain Axis. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10109-y. [PMID: 37365420 DOI: 10.1007/s12602-023-10109-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2023] [Indexed: 06/28/2023]
Abstract
Recent burgeoning literature unveils the importance of gut microbiota in the neuropathology of post-stroke brain injury and recovery. Indeed, ingestion of prebiotics/probiotics imparts positive effects on post-stroke brain injury, neuroinflammation, gut dysbiosis, and intestinal integrity. However, information on the disease-specific preference of selective prebiotics/probiotics/synbiotics and their underlying mechanism is yet elusive. Herein, we examined the effect of a new synbiotic formulation containing multistrain probiotics (Lactobacillus reuteri UBLRu-87, Lactobacillus plantarum UBLP-40, Lactobacillus rhamnosus UBLR-58, Lactobacillus salivarius UBLS-22, and Bifidobacterium breve UBBr-01), and prebiotic fructooligosaccharides using a middle cerebral artery occlusion (MCAO) model of cerebral ischemia in female and male rats. Three weeks pre-MCAO administration of synbiotic rescinded the MCAO-induced sensorimotor and motor deficits on day 3 post-stroke in rotarod, foot-fault, adhesive removal, and paw whisker test. We also observed a decrease in infarct volume and neuronal death in the ipsilateral hemisphere of synbiotic-treated MCAO rats. The synbiotic treatment also reversed the elevated levels/mRNA expression of the glial fibrillary acidic protein (GFAP), NeuN, IL-1β, TNF-α, IL-6, matrix metalloproteinase-9, and caspase-3 and decreased levels of occludin and zonula occludens-1 in MCAO rats. 16S rRNA gene-sequencing data of intestinal contents indicated an increase in genus/species of Prevotella (Prevotella copri), Lactobacillus (Lactobacillus reuteri), Roseburia, Allobaculum, and Faecalibacterium prausnitzii, and decreased abundance of Helicobacter, Desulfovibrio, and Akkermansia (Akkermansia muciniphila) in synbiotic-treated rats compared to the MCAO surgery group. These findings confer the potential benefits of our novel synbiotic preparation for MCAO-induced neurological dysfunctions by reshaping the gut-brain-axis mediators in rats.
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Affiliation(s)
- Ziaur Rahman
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Nagesh A Bhale
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Amol G Dikundwar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Manoj P Dandekar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India.
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15
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Giraud S, Zamora JC, Zegers RGT, Bazin D, Ayyad Y, Bacca S, Beceiro-Novo S, Brown BA, Carls A, Chen J, Cortesi M, DeNudt M, Hagen G, Hultquist C, Maher C, Mittig W, Ndayisabye F, Noji S, Novario SJ, Pereira J, Rahman Z, Schmitt J, Serikow M, Sun LJ, Surbrook J, Watwood N, Wheeler T. β^{+} Gamow-Teller Strengths from Unstable ^{14}O via the (d,^{2}He) Reaction in Inverse Kinematics. Phys Rev Lett 2023; 130:232301. [PMID: 37354417 DOI: 10.1103/physrevlett.130.232301] [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: 10/27/2022] [Revised: 04/14/2023] [Accepted: 05/05/2023] [Indexed: 06/26/2023]
Abstract
For the first time, the (d,^{2}He) reaction was successfully used in inverse kinematics to extract the Gamow-Teller transition strength in the β^{+} direction from an unstable nucleus. The new technique was made possible by the use of an active-target time-projection chamber and a magnetic spectrometer, and opens a path to addressing a range of scientific challenges, including in astrophysics and neutrino physics. In this Letter, the nucleus studied was ^{14}O, and the Gamow-Teller transition strength to ^{14}N was extracted up to an excitation energy of 22 MeV. The data were compared to shell-model and state-of-the-art coupled-cluster calculations. Shell-model calculations reproduce the measured Gamow-Teller strength distribution up to about 15 MeV reasonably well, after the application of a phenomenological quenching factor. In a significant step forward to better understand this quenching, the coupled-cluster calculation reproduces the full strength distribution well without such quenching, owing to the large model space, the inclusion of strong correlations, and the coupling of the weak interaction to two nucleons through two-body currents.
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Affiliation(s)
- S Giraud
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - J C Zamora
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
| | - R G T Zegers
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - D Bazin
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - Y Ayyad
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- IGFAE, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - S Bacca
- Institut für Kernphysik and PRISMA+ Cluster of Excellence, Johannes Gutenberg-Universität, 55128 Mainz, Germany
- Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - S Beceiro-Novo
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- CITENI, Campus Industrial de Ferrol, Universidade da Coruña, Campus de Esteiro, 15403 Ferrol, Spain
| | - B A Brown
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Carls
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - J Chen
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - M Cortesi
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
| | - M DeNudt
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - G Hagen
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - C Hultquist
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - C Maher
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - W Mittig
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - F Ndayisabye
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - S Noji
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
| | - S J Novario
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - J Pereira
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
| | - Z Rahman
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - J Schmitt
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - M Serikow
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - L J Sun
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
| | - J Surbrook
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - N Watwood
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Wheeler
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics: Center for the Evolution of the Elements, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
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Rao Gajula SN, Talari S, Nathani TN, Munjal V, Rahman Z, Dandekar MP, Sonti R. Effect of chronopharmacology and food on in vivo pharmacokinetic profile of mavacamten. Bioanalysis 2023. [PMID: 37254776 DOI: 10.4155/bio-2023-0030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
Aim: This study investigated the impact of food intake and circadian rhythms on the pharmacokinetics of mavacamten. Materials & methods: A sensitive bioanalytical method for quantifying mavacamten in rat plasma was developed and validated. This method was applied to assess the effect of chronopharmacology and food intake on the pharmacokinetics of mavacamten in rats. Results: A circadian variation at two doses resulted in significant changes in the volume of distribution, clearance and time of maximum plasma concentration of mavacamten (p < 0.05). In addition, food intake had an insignificant impact on the pharmacokinetic parameters except for the time of maximum plasma concentration (p < 0.05). Conclusion: These pharmacokinetic changes and human chronotype findings will help optimize dosing time.
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Affiliation(s)
- Siva Nageswara Rao Gajula
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research, Hyderabad, Balanagar, Telangana, 500037, India
| | - Sasikala Talari
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research, Hyderabad, Balanagar, Telangana, 500037, India
| | - Tanaaz Navin Nathani
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research, Hyderabad, Balanagar, Telangana, 500037, India
| | - Vijay Munjal
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research, Hyderabad, Balanagar, Telangana, 500037, India
| | - Ziaur Rahman
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research, Hyderabad, Balanagar, Telangana, 500037, India
| | - Manoj P Dandekar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research, Hyderabad, Balanagar, Telangana, 500037, India
| | - Rajesh Sonti
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research, Hyderabad, Balanagar, Telangana, 500037, India
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Rahman Z, Dandekar MP. Implication of Paraprobiotics in Age-Associated Gut Dysbiosis and Neurodegenerative Diseases. Neuromolecular Med 2023; 25:14-26. [PMID: 35879588 DOI: 10.1007/s12017-022-08722-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 07/13/2022] [Indexed: 10/16/2022]
Abstract
Neurodegenerative diseases, including Alzheimer's and Parkinson's disease, are major age-related concerns in elderly people. Since no drug fully addresses the progression of neurodegenerative diseases, advance treatment strategies are urgently needed. Several studies have noted the senescence of immune system and the perturbation of gut microbiota in the aged population. In recent years, the role of gut microbiota has been increasingly studied in the manifestation of age-related CNS disorders. In this context, prebiotics, probiotics, and paraprobiotics are reported to improve the behavioural and neurobiological abnormalities in elderly patients. As live microbiota, prescribed in the form of probiotics, shows some adverse effects like sepsis, translocation, and horizontal gene transfer, paraprobiotics could be a possible alternative strategy in designing microbiome-based therapeutics. This review describes the health-beneficial effects of paraprobiotics in age-associated neurodegenerative diseases.
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Affiliation(s)
- Ziaur Rahman
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India
| | - Manoj P Dandekar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India.
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Dayo ZA, Aamir M, Rahman Z, Khoso IA, Lodro MM, Dayo SA, Soothar P, Pathan MS, Al-Gburi AJA, Memon AA, Chowdhry BS. A Novel Low-Cost Compact High-Performance Flower-Shaped Radiator Design for Modern Smartphone Applications. Micromachines (Basel) 2023; 14:463. [PMID: 36838163 PMCID: PMC9962356 DOI: 10.3390/mi14020463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
This manuscript examines the design principle and real-world validation of a new miniaturized high-performance flower-shaped radiator (FSR). The antenna prototype consists of an ultracompact square metallic patch of 0.116λ0 × 0.116λ0 (λ0 is the free space wavelength at 3.67 GHz), a rectangular microstrip feed network, and a partial metal ground plane. A novel, effective, and efficient approach based on open circuit loaded stubs is employed to achieve the antenna's optimal performance features. Rectangular, triangular, and circular disc stubs were added to the simple structure of the square radiator, and hence, the FSR configuration was formed. The proposed antenna was imprinted on a low-cost F4B laminate with low profile thickness of 0.018λ0, relative permittivity εr = 2.55, and dielectric loss tangent δ = 0.0018. The designed radiator has an overall small size of 0.256λ0 × 0.354λ0. The parameter study of multiple variables and their influence on the performance results has been extensively studied. Moreover, the impact of different substrate materials, impedance bandwidths, resonance tuning, and impedance matching has also been analyzed. The proposed antenna model has been designed, simulated, and fabricated. The designed antenna exhibits a wide bandwidth of 5.33 GHz ranging from 3.67 to 9.0 GHz at 10 dB return loss, which resulted in an 83.6% fractional impedance bandwidth; a maximum gain of 7.3 dBi at 8.625 GHz; optimal radiation efficiency of 89% at 4.5 GHz; strong intensity current flow across the radiator; and stable monopole-like far-field radiation patterns. Finally, a comparison between the scientific results and newly published research has been provided. The antenna's high-performance simulated and measured results are in a good agreement; hence, they make the proposed antenna an excellent choice for modern smartphones' connectivity with the sub-6 GHz frequency spectrum of modern fifth-generation (5G) mobile communication application.
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Affiliation(s)
- Zaheer Ahmed Dayo
- College of Computer Science, Huanggang Normal University (HGNU), Huanggang 438000, China
| | - Muhammad Aamir
- College of Computer Science, Huanggang Normal University (HGNU), Huanggang 438000, China
| | - Ziaur Rahman
- College of Computer Science, Huanggang Normal University (HGNU), Huanggang 438000, China
| | - Imran A. Khoso
- College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing 211106, China
| | - Mir Muhammad Lodro
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK
- School of Electrical and Electronic Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Shoaib Ahmed Dayo
- Department of Industrial Engineering, Universita Degli Studi Di Salerno (University of Salerno), Via Giovanni Paolo II, 132-84084 Fisciano, SA, Italy
| | - Permanand Soothar
- School of Electronic and Optical Engineering, Nanjing University of Science and Technology (NJUST), Nanjing 210094, China
- Department of Telecommunication and Electronics Engineering, Institute of Information and Communication Technologies (IICT), Mehran University of Engineering and Technology (MUET), Jamshoro 76062, Pakistan
| | - Muhammad Salman Pathan
- Department of Computer Science, National University of Ireland, Maynooth, W23 F2H6 Kildare, Ireland
| | - Ahmed Jamal Abdullah Al-Gburi
- Microwave Research Group (MRG), Centre for Telecommunication Research & Innovation (CeTRI), Fakulti Kejuruteraan Elektronik dan Kejuruteraan Komputer (FKEKK), Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, Durian Tunggal 76100, Malaysia
| | - Aftab Ahmed Memon
- Department of Telecommunication and Electronics Engineering, Institute of Information and Communication Technologies (IICT), Mehran University of Engineering and Technology (MUET), Jamshoro 76062, Pakistan
| | - Bhawani Shankar Chowdhry
- Department of Telecommunication and Electronics Engineering, Institute of Information and Communication Technologies (IICT), Mehran University of Engineering and Technology (MUET), Jamshoro 76062, Pakistan
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Soni JP, Nikitha Reddy G, Rahman Z, Sharma A, Spandana A, Phanindranath R, Dandekar MP, Nagesh N, Shankaraiah N. Synthesis and cytotoxicity evaluation of DNA-interactive β-carboline indolyl-3-glyoxamide derivatives: Topo-II inhibition and in silico modelling studies. Bioorg Chem 2023; 131:106313. [PMID: 36516521 DOI: 10.1016/j.bioorg.2022.106313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/18/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022]
Abstract
In a quest for effective cancer targeted drug therapy, a series of new β-carboline tethered indole-3-glyoxylamide derivatives, conjoining salient pharmacophoric properties with prominent cytotoxicity, were synthesized. The in vitro cytotoxic ability of the compounds was established, and many of the compounds exhibited remarkable cytotoxicity (IC50 < 10 μM) on human cancer cell lines like HCT116, A549, SK-MEL-28, and MCF7. Precisely, compound 12x expressed the best cytotoxic potential against melanoma cancer cell line (SK-MEL-28) with an IC50 value of 4.37 μM. In addition, cytotoxicity evaluation against normal kidney cell line (NRK52E) entrenched the cytospecificity and selectivity index of 12x. The traditional apoptosis assays advised morphological and nuclear alterations such as apoptotic body formation, condensed/horseshoe-shaped/fragmented nuclei, and generation of ROS. The flow cytometric analysis revealed significant early and slight late-stage induction of apoptosis. The target-based physiochemical assays indicated the ability of compound 12x to bind with DNA and inhibition of Topoisomerase II. Moreover, molecular modeling studies affirm the excellent DNA intercalation potential and stabilized interactions of 12x with DNA base pairs. In silico prediction of physicochemical parameters revealed the promising drug-like properties of the synthesized derivatives.
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Affiliation(s)
- Jay Prakash Soni
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - G Nikitha Reddy
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Ziaur Rahman
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Anamika Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Akella Spandana
- CSIR-Centre for Cellular and Molecular Biology, Medical Biotechnology Complex, ANNEXE II, Uppal Road, Hyderabad 500007, India
| | - Regur Phanindranath
- CSIR-Centre for Cellular and Molecular Biology, Medical Biotechnology Complex, ANNEXE II, Uppal Road, Hyderabad 500007, India
| | - Manoj P Dandekar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Narayana Nagesh
- CSIR-Centre for Cellular and Molecular Biology, Medical Biotechnology Complex, ANNEXE II, Uppal Road, Hyderabad 500007, India.
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
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Zhu Z, Rahman Z, Aamir M, Shah SZA, Hamid S, Bilawal A, Li S, Ishfaq M. Insight into TLR4 receptor inhibitory activity via QSAR for the treatment of Mycoplasma pneumonia disease. RSC Adv 2023; 13:2057-2069. [PMID: 36712602 PMCID: PMC9833105 DOI: 10.1039/d2ra06178c] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 12/14/2022] [Indexed: 01/13/2023] Open
Abstract
Mycoplasma pneumoniae (MP) is one of the most common pathogenic organisms causing upper and lower respiratory tract infections, lung injury, and even death in young children. Toll-like receptors (TLRs) play an important role in innate immunity by allowing the host to recognize pathogens invading the body. Previous studies demonstrated that TLR4 is a potential therapeutic target for the treatment of MP pneumonia. Therefore, the present study aimed to screen biologically active ingredients that target the TLR4 receptor pathway. We first used molecular docking to screen out the active compounds inhibiting the TLR4 pathway, and then used regression and classification machine learning algorithms to establish a quantitative structure-activity relationship (QSAR) model to predict the biological activity of the screened compounds. A total of 78 molecules were used in QSAR modelling, which were retrieved from the ChEMBL database. The QSAR models had acceptable correlation coefficients of R 2 on the training and testing dataset in the range of 0.96 to 0.91 and 0.93 to 0.76, respectively. The multiclass classification models showed accuracy on training and testing data within ranges of 1.0 to 0.70, 0.96 to 0.63, and log loss ranges from 0.27 to 8.63, respectively. In addition, molecular descriptors and fingerprints have been studied as structural elements involved in increased and decreased inhibitory activities. These results provide a quantitative analysis of QSAR and classification models applicable for high-throughput screening, as well as insights into the mechanisms of inhibition of TLR4 antagonists.
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Affiliation(s)
- Zemin Zhu
- College of Computer Science, Huanggang Normal UniversityHuanggang 438000China+86 15972855212
| | - Ziaur Rahman
- College of Computer Science, Huanggang Normal UniversityHuanggang 438000China+86 15972855212
| | - Muhammad Aamir
- College of Computer Science, Huanggang Normal UniversityHuanggang 438000China+86 15972855212
| | - Syed Zahid Ali Shah
- Department of Pathology, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur-PakistanPakistan
| | - Sattar Hamid
- The University of Agriculture PeshawarKhyber Pakhtunkhwa25130Pakistan
| | - Akhunzada Bilawal
- College of Food Science, Northeast Agricultural UniversityHarbinChina
| | - Sihong Li
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F UniversityHangzhou 311300China
| | - Muhammad Ishfaq
- College of Computer Science, Huanggang Normal UniversityHuanggang 438000China+86 15972855212
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21
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Zafar A, Rahman Z, Mubeen H, Makhdoom J, Tariq J, Mahjabeen, Ali Z, Hamid A, Shafique E, Aftab MN. Heterologous expression, molecular studies and biochemical characterization of a novel alkaline esterase gene from Bacillus thuringiensis for detergent industry. RSC Adv 2022; 12:34482-34495. [PMID: 36545586 PMCID: PMC9709933 DOI: 10.1039/d2ra06138d] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/23/2022] [Indexed: 12/05/2022] Open
Abstract
Present study was aimed to clone and express the esterase encoding gene from Bacillus thuringiensis in E. coli BL21. Purification of recombinant esterase enzyme was achieved up to 48.6 purification folds by ion exchange chromatography with specific activity of 126.36 U mg-1. Molecular weight of esterase enzyme was 29 kDa as measured by SDS-PAGE. Purified esterase enzyme showed stability up to 90% at 90 °C and remained stable in a wide pH range (8-11). Molecular docking strengthens the experimental results by showing the higher binding energy with p-NP-butyrate. Enzyme activity was found to be reduced by EDTA but enhanced in the presence of other metal ions. Enzyme activity was reduced with 1% SDS, PMSF, and urea but organic solvents did not show considerable impact on it even at higher concentrations. Purified recombinant esterase was also found to be compatible with commercial laundry detergents and showed very good stability (up to 90%). All these properties proved the esterase enzyme from B. thuringensis a significant addition in detergent industry.
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Affiliation(s)
- Asma Zafar
- Faculty of Science and Technology, University of Central PunjabLahorePakistan+92-3006485797
| | - Ziaur Rahman
- Faculty of Science and Technology, University of Central PunjabLahorePakistan+92-3006485797
| | - Hira Mubeen
- Faculty of Science and Technology, University of Central PunjabLahorePakistan+92-3006485797
| | | | - Javeria Tariq
- Faculty of Science and Technology, University of Central PunjabLahorePakistan+92-3006485797
| | - Mahjabeen
- Faculty of Science and Technology, University of Central PunjabLahorePakistan+92-3006485797
| | - Zulqurnain Ali
- Faculty of Science and Technology, University of Central PunjabLahorePakistan+92-3006485797
| | - Attia Hamid
- Institute of Industrial Biotechnology, Govt. College UniversityLahorePakistan
| | - Eeza Shafique
- Faculty of Science and Technology, University of Central PunjabLahorePakistan+92-3006485797
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Mahato M, Tohora N, Rahman Z, Sultana T, Ghanta S, Kumar Das S. A benzoxazole-based smart molecule for relay detection of zinc and phosphate ions and its implication towards molecular logic gate constructions. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Nawab J, Ghani J, Rehman SAU, Idress M, Luqman M, Khan S, Asghar A, Rahman Z. Biomonitoring of mercury in water, sediments, and fish (brown and rainbow trout) from remote alpine lakes located in the Himalayas, Pakistan. Environ Sci Pollut Res Int 2022; 29:81021-81036. [PMID: 35727512 DOI: 10.1007/s11356-022-21340-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Mercury (Hg) contamination of aquatic ecological units and subsequent bioaccumulation are major environmental problems of international scope. Moreover, the biogeochemistry of Hg in the remote alpine lakes aquatic ecosystem in the Himalayas remains largely unexplored. The current study investigated Hg concentrations in different environmental compartments such as water, fish, and sediments in the remote alpine lakes (RALs) including Glacial-fed Lake, Ice melting-fed Lake, and Rain-fed Lake in northern areas of Pakistan. The mean concentration of Hg in Rain-fed Lake water was (1.07 µg L-1), Ice melting-fed Lake (1.16 µg L-1), and Glacial-fed Lake (1.95 µg L-1). For fish muscle tissues, mean concentration of Hg was 1.02 mg kg-1 in the Rain-fed Lake, and 1.2 mg kg-1 for the Ice melting-fed Lake, and 1.51 mg kg-1 in the Glacial-fed Lake. Meanwhile, 0.27 mg kg-1 was observed for sediments in the Rain-fed Lake, 0.33 mg kg-1 for the Ice melting-fed Lake, and 0.38 mg kg-1 for the Glacial-fed Lake, respectively. Chronic daily intake (CDI) and potential health quotient (PHQ) for water showed high health risk in Glacial-fed Lake and low in Rain-fed Lake (PHQ < 1). The target hazard quotient (THQ) values for both the Brown and Rainbow trout in all the studied lakes water were less than 1, indicating no health risk. Furthermore, the Hg level showed high level of contamination in the sediments of all the studied lakes (190 ≤ RI < 380). Overall, Glacial-fed Lake water was more polluted with Hg, as compared to Rain-fed Lake and Ice melting-fed Lake. In the light of the abovementioned results, further research work is urgently needed to shed light on the biological and geochemical monitoring of Hg in arid high-altitude ecosystems along with source identification, mercury speciation, and other potential pollutants.
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Affiliation(s)
- Javed Nawab
- Department of Environmental Sciences, Kohat University of Science and Technology, Kohat, Pakistan.
- Department of Environmental Sciences, Abdul Wali Khan University Mardan, Mardan, Pakistan.
| | - Junaid Ghani
- Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum University of Bologna, 40126, Bologna, Italy
| | - Syed Aziz Ur Rehman
- Department of Environmental Sciences, University of Veterinary and Animal Sciences, Lahore, 54000, Punjab, Pakistan
| | - Muhammad Idress
- Department of Environmental Sciences, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Muhammad Luqman
- Department of Environmental Sciences, University of Veterinary and Animal Sciences, Lahore, 54000, Punjab, Pakistan
| | - Sardar Khan
- Department of Environmental Sciences, University of Peshawar, Peshawar, 25120, Pakistan
| | - Ali Asghar
- Department of Environmental Sciences, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Ziaur Rahman
- Department of Microbiology, Abdul Wali Khan University Mardan, Mardan, Pakistan
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Jawad Ul Hasnain M, Amin F, Ghani A, Ahmad S, Rahman Z, Aslam T, Pervez MT. Structural and Functional Impact of Damaging Nonsynonymous Single Nucleotide Polymorphisms (nsSNPs) on Human VPS35 Protein Using Computational Approaches. IEEE/ACM Trans Comput Biol Bioinform 2022; 19:3715-3724. [PMID: 34613918 DOI: 10.1109/tcbb.2021.3118054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Parkinson's disease is the second most common progressive neurodegenerative movement disorder. Mutations in retromer complex subunit and VPS35 represent the second most common cause of late-onset familial Parkinson's disease. The mutation in VPS35 can disrupt the normal protein functions resulting in Parkinson's disease. The aim of this study was the identification of deleterious missense Single Nucleotide Polymorphisms (nsSNPs) and their structural and functional impact on the VPS35 protein. In this study, several insilico tools were used to identify deleterious and disease-associated nsSNPs. 3D structure of VPS35 protein was constructed through MODELLER 9.2, normalized using FOLDX, and evaluated through RAMPAGE and ERRAT whereas, FOLDX was used for mutagenesis. 25 ligands were obtained from literature and docked using PyRx 0.8 software. Based on the binding affinity, five ligands i.e., PG4, MSE, GOL, EDO, and CAF were further analyzed. Molecular Dynamic simulation analysis was performed using GROMACS 5.1.4, where temperature, pressure, density, RMSD, RMSF, Rg, and SASA graphs were analyzed. The results showed that the mutations Y67H, R524W, and D620N had a structural and functional impact on the VPS35 protein. The current findings will help in appropriate drug design against the disease caused by these mutations in a large population using in-vitro study.
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Rahman Z, Mahato M, Tohora N, Ghanta S, Kumar Das S. Reversible acidochromism of a benzoxazole based scaffold and construction of reconfigurable dual output molecular logic gates. Spectrochim Acta A Mol Biomol Spectrosc 2022; 278:121310. [PMID: 35561445 DOI: 10.1016/j.saa.2022.121310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/17/2022] [Accepted: 04/23/2022] [Indexed: 06/15/2023]
Abstract
This report explores the reversible acidochromism of a benzoxazole-based scaffold (BPP), which is highly sensitive to the acid-base in the liquid and gas phases. With the addition of acid, the solution of BPP changes its color from yellow to pink fuchsia due to the transformation of its imine into quinonoid form. Colour change is completely reversible in the presence of the base, confirming the reversible acidochromic behavior of the present BPP system. Further, a paper strips-based test kit has been demonstrated for the practical utility of the present acidochromic BPP to identify a trace amount of acid-base in solution and gas-phase, respectively. The mechanistic aspect of detection of acid-base and colorimetric change in the presence of acid-base have been explored by density functional theoretical investigations and 1H NMR experiments. Moreover, we have constructed a reconfigurable dual-output combinatorial logic circuit by utilizing the spectral shift between two wavelengths at 404 nm and 552 nm, respectively, and colorimetric change of the BPP in the presence and absence of acid-base.
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Affiliation(s)
- Ziaur Rahman
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling, West Bengal 734013, India
| | - Manas Mahato
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling, West Bengal 734013, India
| | - Najmin Tohora
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling, West Bengal 734013, India
| | - Susanta Ghanta
- Department of Chemistry, National Institute of Technology, Agartala, Barjala, Jirania, Tripura 799046, India
| | - Sudhir Kumar Das
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling, West Bengal 734013, India.
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Rahman Z, Rajbanshi M, Mahato M, Ghanta S, Kumar Das S. A phthalimide scaffold smart molecule for visualization of acid-base equilibrium and determination of acid dissociation constants in the non-aqueous medium. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mahato M, Mardanya S, Rahman Z, Tohora N, Pramanik P, Ghanta S, Chowdhury AA, Kumar Shaw T, Kumar Das S. A Coumarin Coupled Electron Donor-Acceptor Dyad for Cascade Detection of Aluminium Ions and Explosive Nitroaromatic Compounds. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114168] [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: 11/27/2022]
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Chatterjee D, Rahman Z, K N H, Sharma J, Rai R, Menon A. Reconstruction of complex oro-mandibular defects by four different modifications of free fibula osteomyocutaneous flap: A prudent alternative to multiple flaps. J Plast Reconstr Aesthet Surg 2022; 75:3346-3355. [PMID: 35715309 DOI: 10.1016/j.bjps.2022.04.060] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 03/08/2022] [Accepted: 04/12/2022] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Resection of advanced oral squamous cell carcinoma results in complex oro-mandibular defects involving external skin, oral mucosa, and bone. Reconstruction of such defects by a single free fibula flap (FFF) is limited by the lack of soft tissue bulk and adequate skin paddle for both intra- and extra-oral coverage. In this study, the reconstruction of large defects was achieved by four modifications of free fibula osteomyocutaneous flap as an alternative to multiple flaps. METHODS In this prospective study, 29 patients with complex oro-mandibular defects were reconstructed by FFF from December 2018 to October 2020. Reconstruction was done with any one of the four FFF modifications involving large proximal skin paddle from lateral leg: Strip de-epithelialization (De-Ep), chimeric bipaddle (Ch-Bp), muscle orally and skin extra-orally (Mo-Se), and double microvascular (Db-Mi). Outcome variables assessed were functional and esthetic results, early/late complications, donor site morbidity, and operative time. An algorithm based on Cordeiro's classification is proposed to assist in the selection of appropriate FFF modification. RESULTS Among 29 patients, De-Ep was used in 13, Ch-Bp in 8, Mo-Se in 7, and Db-Mi in 1 case. None of the flaps underwent total loss. Two cases required re-exploration. The median operative time was 775 min. Wound dehiscence and oro-cutaneous fistula were common early and late complications, respectively. Partial split skin graft loss (SSG) was the most common donor site morbidity. Functional and facial aesthetics were acceptable at the end of follow-up. CONCLUSIONS Specific FFF modifications can be recommended in selected scenarios. It is reliable for single-stage reconstruction with satisfactory esthetic and functional outcomes. When used for reconstruction in first primary tumors, the second donor site is preserved, which can prove valuable in the event of a recurrence or second primary.
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Affiliation(s)
- Dipmalya Chatterjee
- Department of Surgical Oncology, Balco Medical Centre, Naya Raipur, Chhattisgarh (493661), India
| | - Ziaur Rahman
- Department of Surgical Oncology, Balco Medical Centre, Naya Raipur, Chhattisgarh (493661), India.
| | - Harsha K N
- Department of Surgical Oncology, Balco Medical Centre, Naya Raipur, Chhattisgarh (493661), India
| | - Jayesh Sharma
- Department of Surgical Oncology, Balco Medical Centre, Naya Raipur, Chhattisgarh (493661), India
| | - Rashmi Rai
- Department of Surgical Oncology, Balco Medical Centre, Naya Raipur, Chhattisgarh (493661), India
| | - Akash Menon
- Department of Surgical Oncology, Balco Medical Centre, Naya Raipur, Chhattisgarh (493661), India
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Rahman Z, Das SK. Ionic‐Liquid‐Based, Sustainable Wavelength‐Shifting Materials for Energy Conversion: A Minireview. ChemistrySelect 2022. [DOI: 10.1002/slct.202103898] [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: 11/08/2022]
Affiliation(s)
- Ziaur Rahman
- Department of Chemistry University of North Bengal Darjeeling West Bengal 734013 India
| | - Sudhir Kumar Das
- Department of Chemistry University of North Bengal Darjeeling West Bengal 734013 India
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Talukder QI, DasGupta S, Samad A, Khan MUS, Rahman Z, Kabiruzzaman M, Rahman ATMK, Ahmed F. The Mid-Term Outcomes of Cone Repair or Replacement of Tricuspid Valve in Patients with Ebstein's Anomaly: Our Experience. Heart Surg Forum 2022; 25:E030-E036. [DOI: 10.1532/hsf.4165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 12/10/2021] [Indexed: 11/20/2022]
Abstract
Background: Cone repair of the tricuspid valve (TV) is a contemporary reproducible technique for surgical reconstruction of Ebstein's anomaly. Different authorities have shown that this technique restores excellent tricuspid valve function. In Bangladesh, this technique still is unfamiliar to many. We hereby present a case series of cone repair and TV replacement with the mid-term outcome (one year to six years) at the National Heart Foundation Hospital & Research Institute, Dhaka, Bangladesh.
Methods: We prospectively studied 21 patients, who underwent surgical intervention (cone repair or tricuspid valve replacement) for Ebstein's anomaly of TV from March 2014 to June 2020. We divided the total patient population into the cone repair and TV replacement groups. Preoperative, postoperative, and follow-up data were collected from the hospital records, telephone conversations, and clinic visits. All collected data statistically were analyzed.
Results: Our patients showed there were statistically significant improvements after surgical intervention with regard to tricuspid regurgitation (TR) (P < 0.001), tricuspid annular plane systolic excursion (TAPSE) (P < 0.001), right ventricular (RV) function (P < 0.001), and New York Heart Association (NYHA) class (P < 0.001). These developments were sustained throughout the follow-up period.
Conclusion: Cone repair should be offered to the symptomatic patients of Ebstein's anomaly because symptoms relief, reduction of morbidity, and survival benefits are excellent. Above all, the cone reconstruction shows fantastic results and may well become the surgical technique for patients with Ebstein’s anomaly. We hope that new valve repair programs may provide extended longevity and restored quality of life to the patient of Ebstein's anomaly (EA) with the appropriate measures. In case of failed repair, valve replacement is an encouraging option.
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Rahman A, Chakraborty C, Anwar A, Karim MR, Islam MJ, Kundu D, Rahman Z, Band SS. SDN-IoT empowered intelligent framework for industry 4.0 applications during COVID-19 pandemic. Cluster Comput 2022; 25:2351-2368. [PMID: 34341656 PMCID: PMC8318841 DOI: 10.1007/s10586-021-03367-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/29/2021] [Accepted: 07/18/2021] [Indexed: 05/09/2023]
Abstract
The industrial ecosystem has been unprecedentedly affected by the COVID-19 pandemic because of its immense contact restrictions. Therefore, the manufacturing and socio-economic operations that require human involvement have significantly intervened since the beginning of the outbreak. As experienced, the social-distancing lesson in the potential new-normal world seems to force stakeholders to encourage the deployment of contactless Industry 4.0 architecture. Thus, human-less or less-human operations to keep these IoT-enabled ecosystems running without interruptions have motivated us to design and demonstrate an intelligent automated framework. In this research, we have proposed "EdgeSDN-I4COVID" architecture for intelligent and efficient management during COVID-19 of the smart industry considering the IoT networks. Moreover, the article presents the SDN-enabled layer, such as data, control, and application, to effectively and automatically monitor the IoT data from a remote location. In addition, the proposed convergence between SDN and NFV provides an efficient control mechanism for managing the IoT sensor data. Besides, it offers robust data integration on the surface and the devices required for Industry 4.0 during the COVID-19 pandemic. Finally, the article justified the above contributions through particular performance evaluations upon appropriate simulation setup and environment.
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Affiliation(s)
- Anichur Rahman
- National Institute of Textile Engineering and Research (NITER), Constituent Institute of the University of Dhaka, Savar, Dhaka, Bangladesh
| | - Chinmay Chakraborty
- Electronics and Communication Engineering, Birla Institute of Technology, Mesra, Jharkhand India
| | - Adnan Anwar
- Centre for Cyber Security Resaerch and Innovation (CSRI), Deakin University, Melbourne, VIC 3220 Australia
| | - Md. Razaul Karim
- Mawlana Bhashani Science and Technology University, Tangail, Bangladesh
| | | | - Dipanjali Kundu
- National Institute of Textile Engineering and Research (NITER), Constituent Institute of the University of Dhaka, Savar, Dhaka, Bangladesh
| | - Ziaur Rahman
- Mawlana Bhashani Science and Technology University, Tangail, Bangladesh
| | - Shahab S. Band
- National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliu, Taiwan
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Albutti A, Gul MS, Siddiqui MF, Maqbool F, Adnan F, Ullah I, Rahman Z, Qayyum S, Shah MA, Salman M. Combating Biofilm by Targeting Its Formation and Dispersal Using Gallic Acid against Single and Multispecies Bacteria Causing Dental Plaque. Pathogens 2021; 10:pathogens10111486. [PMID: 34832641 PMCID: PMC8618234 DOI: 10.3390/pathogens10111486] [Citation(s) in RCA: 8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/06/2021] [Accepted: 11/12/2021] [Indexed: 11/16/2022] Open
Abstract
Exploring biological agents to control biofilm is a vital alternative in combating pathogenic bacteria that cause dental plaque. This study was focused on antimicrobial, biofilm formation and biofilm dispersal efficacy of Gallic acid (GA) against bacteria, including Proteus spp., Escherichia coli, Pseudomonas spp., Salmonella spp., Streptococcus mutans, and Staphylococcus aureus and multispecies bacteria. Biofilm was qualitatively and quantitatively assessed by crystal violet assay, florescence microscopy (bacterial biomass (µm2), surface coverage (%)) and extracellular polymeric substances (EPS). It was exhibited that GA (1-200 mg/L) can reduce bacterial growth. However, higher concentrations (100-200 mg/L) markedly reduced (86%) bacterial growth and biofilm formation (85.5%), while GA did not exhibit any substantial dispersal effects on pre-formed biofilm. Further, GA (20-200 mg/L) exhibited 93.43% biomass reduction and 88.6% (p < 0.05) EPS (polysaccharide) reduction. Microscopic images were processed with BioImageL software. It was revealed that biomass surface coverage was reduced to 2% at 200 mg/L of GA and that 13,612 (µm2) biomass was present for control, while it was reduced to 894 (µm2) at 200 mg/L of GA. Thus, this data suggest that GA have antimicrobial and biofilm control potential against single and multispecies bacteria causing dental plaque.
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Affiliation(s)
- Aqel Albutti
- Department of Medical Biotechnology, College of Applied Medical Sciences, Qassim University, Buraydah 51452, Saudi Arabia;
| | - Muhammad Shoaib Gul
- Department of Health and Biological Sciences, Abasyn University, Peshawar 25000, Pakistan; (M.S.G.); (M.S.)
| | - Muhammad Faisal Siddiqui
- Department of Health and Biological Sciences, Abasyn University, Peshawar 25000, Pakistan; (M.S.G.); (M.S.)
- Department of Microbiology, Hazara University, Mansehra 21120, Pakistan; (F.M.); (S.Q.)
- Correspondence: or ; Tel.: +92-3345732788
| | - Farhana Maqbool
- Department of Microbiology, Hazara University, Mansehra 21120, Pakistan; (F.M.); (S.Q.)
| | - Fazal Adnan
- Atta ur Rahman School of Applied Biosciences, National University of Sciences & Technology, Islamabad 44000, Pakistan;
| | - Ihsan Ullah
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Ziaur Rahman
- Department of Microbiology, Abdul Wali Khan University, Mardan 23200, Pakistan;
| | - Sadia Qayyum
- Department of Microbiology, Hazara University, Mansehra 21120, Pakistan; (F.M.); (S.Q.)
| | - Muhammad Ajmal Shah
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad 38000, Pakistan;
| | - Muhammad Salman
- Department of Health and Biological Sciences, Abasyn University, Peshawar 25000, Pakistan; (M.S.G.); (M.S.)
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Rahman Z, Das SK. Ionic Liquids based Acid‐base Indicators for Aqueous to the Non‐Aqueous Medium: An Overview. ChemistrySelect 2021. [DOI: 10.1002/slct.202102273] [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: 11/09/2022]
Affiliation(s)
- Ziaur Rahman
- Department of Chemistry University of North Bengal West Bengal India- 734013
| | - Sudhir Kumar Das
- Department of Chemistry University of North Bengal West Bengal India- 734013
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Dandekar MP, Diaz AP, Rahman Z, Silva RH, Nahas Z, Aaronson S, Selvaraj S, Fenoy AJ, Sanches M, Soares JC, Riva-Posse P, Quevedo J. A narrative review on invasive brain stimulation for treatment-resistant depression. ACTA ACUST UNITED AC 2021; 44:317-330. [PMID: 34468549 PMCID: PMC9169472 DOI: 10.1590/1516-4446-2021-1874] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 04/22/2021] [Indexed: 12/20/2022]
Abstract
While most patients with depression respond to pharmacotherapy and psychotherapy, about one-third will present treatment resistance to these interventions. For patients with treatment-resistant depression (TRD), invasive neurostimulation therapies such as vagus nerve stimulation, deep brain stimulation, and epidural cortical stimulation may be considered. We performed a narrative review of the published literature to identify papers discussing clinical studies with invasive neurostimulation therapies for TRD. After a database search and title and abstract screening, relevant English-language articles were analyzed. Vagus nerve stimulation, approved by the U.S. Food and Drug Administration as a TRD treatment, may take several months to show therapeutic benefits, and the average response rate varies from 15.2-83%. Deep brain stimulation studies have shown encouraging results, including rapid response rates (> 30%), despite conflicting findings from randomized controlled trials. Several brain regions, such as the subcallosal-cingulate gyrus, nucleus accumbens, ventral capsule/ventral striatum, anterior limb of the internal capsule, medial-forebrain bundle, lateral habenula, inferior-thalamic peduncle, and the bed-nucleus of the stria terminalis have been identified as key targets for TRD management. Epidural cortical stimulation, an invasive intervention with few reported cases, showed positive results (40-60% response), although more extensive trials are needed to confirm its potential in patients with TRD.
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Affiliation(s)
- Manoj P Dandekar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| | - Alexandre P Diaz
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Ziaur Rahman
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| | - Ritele H Silva
- Laboratório de Psiquiatria Translacional, Programa de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense (UNESC), Criciúma, SC, Brazil
| | - Ziad Nahas
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Scott Aaronson
- Clinical Research Programs, Sheppard Pratt Health System, Baltimore, MD, USA
| | - Sudhakar Selvaraj
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Albert J Fenoy
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA.,Deep Brain Stimulation Program, Department of Neurosurgery, McGovern Medical School, UTHealth, Houston, TX, USA
| | - Marsal Sanches
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Jair C Soares
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA.,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Patricio Riva-Posse
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, GA, USA
| | - Joao Quevedo
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA.,Laboratório de Psiquiatria Translacional, Programa de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense (UNESC), Criciúma, SC, Brazil.,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA.,Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, UTHealth, Houston, TX, USA
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Chatterjee D, Menon A, Sharma J, Rahman Z, N HK. The 3D tongue depressor guide: a low-cost alternative to 3D printing in fibula-based mandibular reconstruction. Eur J Plast Surg 2021. [DOI: 10.1007/s00238-021-01859-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Guan Y, Aamir M, Rahman Z, Ali A, Abro WA, Dayo ZA, Bhutta MS, Hu Z. A framework for efficient brain tumor classification using MRI images. Math Biosci Eng 2021; 18:5790-5815. [PMID: 34517512 DOI: 10.3934/mbe.2021292] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A brain tumor is an abnormal growth of brain cells inside the head, which reduces the patient's survival chance if it is not diagnosed at an earlier stage. Brain tumors vary in size, different in type, irregular in shapes and require distinct therapies for different patients. Manual diagnosis of brain tumors is less efficient, prone to error and time-consuming. Besides, it is a strenuous task, which counts on radiologist experience and proficiency. Therefore, a modern and efficient automated computer-assisted diagnosis (CAD) system is required which may appropriately address the aforementioned problems at high accuracy is presently in need. Aiming to enhance performance and minimise human efforts, in this manuscript, the first brain MRI image is pre-processed to improve its visual quality and increase sample images to avoid over-fitting in the network. Second, the tumor proposals or locations are obtained based on the agglomerative clustering-based method. Third, image proposals and enhanced input image are transferred to backbone architecture for features extraction. Fourth, high-quality image proposals or locations are obtained based on a refinement network, and others are discarded. Next, these refined proposals are aligned to the same size, and finally, transferred to the head network to achieve the desired classification task. The proposed method is a potent tumor grading tool assessed on a publicly available brain tumor dataset. Extensive experiment results show that the proposed method outperformed the existing approaches evaluated on the same dataset and achieved an optimal performance with an overall classification accuracy of 98.04%. Besides, the model yielded the accuracy of 98.17, 98.66, 99.24%, sensitivity (recall) of 96.89, 97.82, 99.24%, and specificity of 98.55, 99.38, 99.25% for Meningioma, Glioma, and Pituitary classes, respectively.
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Affiliation(s)
- Yurong Guan
- Department of Computer Science, Huanggang Normal University, Huangzhou 438000, China
| | - Muhammad Aamir
- Department of Computer Science, Huanggang Normal University, Huangzhou 438000, China
| | - Ziaur Rahman
- Department of Computer Science, Huanggang Normal University, Huangzhou 438000, China
| | - Ammara Ali
- Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Norway
| | - Waheed Ahmed Abro
- Department of Computer Science, Huanggang Normal University, Huangzhou 438000, China
| | - Zaheer Ahmed Dayo
- Department of Computer Science, Huanggang Normal University, Huangzhou 438000, China
| | - Muhammad Shoaib Bhutta
- Binjiang College, Nanjing University of Information Science & Technology, Wuxi 214105, China
| | - Zhihua Hu
- Department of Computer Science, Huanggang Normal University, Huangzhou 438000, China
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Hussain A, Rahman Z, Khan M. Detection of Aflatoxins in Peanut Oils Marketed in Peshawar, Pakistan Using Thin Layer Chromatography. JFQHC 2021. [DOI: 10.18502/jfqhc.8.2.6473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: Aflatoxins (AFs) are natural toxins produced by fungus belonging to genus Aspergillus. These toxins are the secondary metabolites, which may cause teratogenic, mutagenic, and carcinogenic effects due to contamination of food. Peanut is an economi- cally important crop, grown in many parts of the world. The main aim of this survey was to detect AFs in peanut oils marketed in Peshawar, Pakistan.
Methods: During September 2020 to February 2021, a total of 60 peanut oil samples were obtained from retail stores and markets; 20-each from three different areas of Pesh- awar (University, City, and Cantt), Pakistan. AFB1, AFB2, AFG1, and AFG2 were deter- mined using Thin Layer Chromatography. Data analysis was done using SPSS 21.0.
Results: Prevalence rates of AFB1, AFB2, AFG1, and AFG2 in peanut oils were 70, 51.7, 3.3, and 0%, respectively. The mean of total AFs was 8.59 μg/kg ranged from 0.12 to 55 μg/kg. Totally, 5% (3 out of 60) of the samples were found contaminated with AFB1 above the permissible limits (20 μg/kg) according to national regulation. There was significant difference (p<0.05) between AF levels in the samples from different three areas of Peshawar.
Conclusion: Although, the majority of samples of peanut oils in Peshawar (Pakistan) were safe for consumption, monitoring of AFs must be carried out on a regular basis in the case of peanut oil consumed in this region. This study suggested that farmers, food processors, and local processors should be aware of acceptable hygiene practices for the cultivation, protection, transportation, processing, and handling of peanut oil.
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Polonsky JA, Ivey M, Mazhar MKA, Rahman Z, le Polain de Waroux O, Karo B, Jalava K, Vong S, Baidjoe A, Diaz J, Finger F, Habib ZH, Halder CE, Haskew C, Kaiser L, Khan AS, Sangal L, Shirin T, Zaki QA, Salam MA, White K. Epidemiological, clinical, and public health response characteristics of a large outbreak of diphtheria among the Rohingya population in Cox's Bazar, Bangladesh, 2017 to 2019: A retrospective study. PLoS Med 2021; 18:e1003587. [PMID: 33793554 PMCID: PMC8059831 DOI: 10.1371/journal.pmed.1003587] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 04/21/2021] [Accepted: 03/15/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Unrest in Myanmar in August 2017 resulted in the movement of over 700,000 Rohingya refugees to overcrowded camps in Cox's Bazar, Bangladesh. A large outbreak of diphtheria subsequently began in this population. METHODS AND FINDINGS Data were collected during mass vaccination campaigns (MVCs), contact tracing activities, and from 9 Diphtheria Treatment Centers (DTCs) operated by national and international organizations. These data were used to describe the epidemiological and clinical features and the control measures to prevent transmission, during the first 2 years of the outbreak. Between November 10, 2017 and November 9, 2019, 7,064 cases were reported: 285 (4.0%) laboratory-confirmed, 3,610 (51.1%) probable, and 3,169 (44.9%) suspected cases. The crude attack rate was 51.5 cases per 10,000 person-years, and epidemic doubling time was 4.4 days (95% confidence interval [CI] 4.2-4.7) during the exponential growth phase. The median age was 10 years (range 0-85), and 3,126 (44.3%) were male. The typical symptoms were sore throat (93.5%), fever (86.0%), pseudomembrane (34.7%), and gross cervical lymphadenopathy (GCL; 30.6%). Diphtheria antitoxin (DAT) was administered to 1,062 (89.0%) out of 1,193 eligible patients, with adverse reactions following among 229 (21.6%). There were 45 deaths (case fatality ratio [CFR] 0.6%). Household contacts for 5,702 (80.7%) of 7,064 cases were successfully traced. A total of 41,452 contacts were identified, of whom 40,364 (97.4%) consented to begin chemoprophylaxis; adherence was 55.0% (N = 22,218) at 3-day follow-up. Unvaccinated household contacts were vaccinated with 3 doses (with 4-week interval), while a booster dose was administered if the primary vaccination schedule had been completed. The proportion of contacts vaccinated was 64.7% overall. Three MVC rounds were conducted, with administrative coverage varying between 88.5% and 110.4%. Pentavalent vaccine was administered to those aged 6 weeks to 6 years, while tetanus and diphtheria (Td) vaccine was administered to those aged 7 years and older. Lack of adequate diagnostic capacity to confirm cases was the main limitation, with a majority of cases unconfirmed and the proportion of true diphtheria cases unknown. CONCLUSIONS To our knowledge, this is the largest reported diphtheria outbreak in refugee settings. We observed that high population density, poor living conditions, and fast growth rate were associated with explosive expansion of the outbreak during the initial exponential growth phase. Three rounds of mass vaccinations targeting those aged 6 weeks to 14 years were associated with only modestly reduced transmission, and additional public health measures were necessary to end the outbreak. This outbreak has a long-lasting tail, with Rt oscillating at around 1 for an extended period. An adequate global DAT stockpile needs to be maintained. All populations must have access to health services and routine vaccination, and this access must be maintained during humanitarian crises.
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Affiliation(s)
- Jonathan A. Polonsky
- World Health Organization, Geneva, Switzerland
- Institute of Global Health, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- * E-mail:
| | - Melissa Ivey
- Médecins Sans Frontières, Amsterdam, the Netherlands
| | | | - Ziaur Rahman
- Ministry of Health and Family Welfare, Dhaka, Bangladesh
| | - Olivier le Polain de Waroux
- World Health Organization, Geneva, Switzerland
- Global Outbreak Alert and Response Network (GOARN), Geneva, Switzerland
- Public Health England, London, United Kingdom
- London School of Hygiene and Tropical Medicine, London, United Kingdom
- UK-Public Health Rapid Support Team, London, United Kingdom
| | - Basel Karo
- Global Outbreak Alert and Response Network (GOARN), Geneva, Switzerland
- Information Centre for International Health Protection (ZIG 1), Robert Koch Institute (RKI), Berlin, Germany
| | - Katri Jalava
- World Health Organization Country Office for Bangladesh, Dhaka, Bangladesh
| | - Sirenda Vong
- World Health Organization South-East Asia Regional Office, New Delhi, India
| | - Amrish Baidjoe
- London School of Hygiene and Tropical Medicine, London, United Kingdom
- World Health Organization South-East Asia Regional Office, New Delhi, India
| | - Janet Diaz
- World Health Organization, Geneva, Switzerland
| | - Flavio Finger
- Global Outbreak Alert and Response Network (GOARN), Geneva, Switzerland
- London School of Hygiene and Tropical Medicine, London, United Kingdom
- Epicentre, Paris, France
| | - Zakir H. Habib
- Institute of Epidemiology Disease Control and Research (IEDCR), Dhaka, Bangladesh
| | | | | | - Laurent Kaiser
- Institute of Global Health, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Ali S. Khan
- Global Outbreak Alert and Response Network (GOARN), Geneva, Switzerland
- College of Public Health, University of Nebraska Medical Center, Nebraska, United States of America
| | - Lucky Sangal
- World Health Organization Country Office for India, New Delhi, India
| | - Tahmina Shirin
- Institute of Epidemiology Disease Control and Research (IEDCR), Dhaka, Bangladesh
| | - Quazi Ahmed Zaki
- Institute of Epidemiology Disease Control and Research (IEDCR), Dhaka, Bangladesh
| | | | - Kate White
- Médecins Sans Frontières, Amsterdam, the Netherlands
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Geraldi A, Khairunnisa F, Farah N, Bui LM, Rahman Z. Synthetic Scaffold Systems for Increasing the Efficiency of Metabolic Pathways in Microorganisms. Biology (Basel) 2021; 10:216. [PMID: 33799683 PMCID: PMC7998396 DOI: 10.3390/biology10030216] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/06/2021] [Accepted: 03/08/2021] [Indexed: 11/16/2022]
Abstract
Microbes have been the preferred hosts for producing high-value chemicals from cheap raw materials. However, metabolic flux imbalance, the presence of competing pathways, and toxic intermediates often lead to low production efficiency. The spatial organization of the substrates, intermediates, and enzymes is critical to ensuring efficient metabolic activity by microorganisms. One of the most common approaches for bringing the key components of biosynthetic pathways together is through molecular scaffolds, which involves the clustering of pathway enzymes on engineered molecules via different interacting mechanisms. In particular, synthetic scaffold systems have been applied to improve the efficiency of various heterologous and synthetic pathways in Escherichia coli and Saccharomyces cerevisiae, with varying degrees of success. Herein, we review the recent developments and applications of protein-based and nucleic acid-based scaffold systems and discuss current challenges and future directions in the use of such approaches.
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Affiliation(s)
- Almando Geraldi
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
- Research Center for Bio-Molecule Engineering, Universitas Airlangga, Surabaya 60115, Indonesia;
| | - Fatiha Khairunnisa
- Research Center for Bio-Molecule Engineering, Universitas Airlangga, Surabaya 60115, Indonesia;
- Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Nadya Farah
- Department of Biology, Faculty of Mathematics and Life Sciences, Indonesia Defense University, Bogor 16810, Indonesia;
| | - Le Minh Bui
- NTT Hi-Tech Institute, Nguyen Tat Thanh University (NTTU), Ho Chi Minh City 700000, Vietnam;
| | - Ziaur Rahman
- Department of Microbiology, Abdul Wali Khan University Mardan, Mardan, Khyber Pakhtunkhwa 23200, Pakistan;
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Rahman Z, Dandekar MP. Crosstalk between gut microbiome and immunology in the management of ischemic brain injury. J Neuroimmunol 2021; 353:577498. [PMID: 33607506 DOI: 10.1016/j.jneuroim.2021.577498] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 12/30/2020] [Accepted: 01/21/2021] [Indexed: 02/06/2023]
Abstract
Ischemic brain injury is a serious neurological complication, which accrues an immense activation of neuroinflammatory responses. Several lines of research suggested the interconnection of gut microbiota perturbation with the activation of proinflammatory mediators. Intestinal microbial communities also interchange information with the brain through various afferent and efferent channels and microbial by-products. Herein, we discuss the different microelements of gut microbiota and its connection with the host immune system and how change in immune-microbial signatures correlates with the stroke incidence and post-injury neurological sequelae. The activated inflammatory cells increase the production of proinflammatory cytokines, chemokines, proteases and adhesive proteins that are involved in the systemic inflammation, blood brain barrier disruption, gut dysbiosis and aggravation of ischemic brain injury. We suggest that fine-tuning of commensal gut microbiota (eubiosis) may regulate the activation of CNS resident cells like microglial, astrocytes, mast cells and natural killer cells.
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Affiliation(s)
- Ziaur Rahman
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Manoj P Dandekar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India.
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Rahman Z, Bazaz MR, Devabattula G, Khan MA, Godugu C. Targeting H3K9 methyltransferase G9a and its related molecule GLP as a potential therapeutic strategy for cancer. J Biochem Mol Toxicol 2020; 35:e22674. [PMID: 33283949 DOI: 10.1002/jbt.22674] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/25/2020] [Indexed: 12/24/2022]
Abstract
H3K9 methyltransferase (G9a) and its relevant molecule GLP are the SET domain proteins that specifically add mono, di and trimethyl groups on to the histone H3K9, which lead to the transcriptional inactivation of chromatin and reduce the expression of cancer suppressor genes, which trigger growth and progress of several cancer types. Various studies have demonstrated that overexpression of H3K9 methyltransferase G9a and GLP in different kinds of tumors, like lung, breast, bladder, colon, cervical, gastric, skin cancers, hepatocellular carcinoma and hematological malignancies. Several G9a and GLP inhibitors such as BIX-01294, UNC0642, A-366 and DCG066 were developed to combat various cancers; however, there is a need for more effective and less toxic compounds. The current molecular docking study suggested that the selected new compounds such as ninhydrin, naphthoquinone, cysteamine and disulfide cysteamine could be suitable molecules as a G9a and GLP inhibitors. Furthermore, detailed cell based and preclinical animal studies are required to confirm their properties. In the current review, we discussed the role of G9a and GLP mediated epigenetic regulation in the cancers. A thorough literature review was done related to G9a and GLP. The databases used extensively for retrieval of information were PubMed, Medline, Scopus and Science-direct. Further, molecular docking was performed using Maestro Schrodinger version 9.2 software to investigate the binding profile of compounds with Human G9a HMT (PDB ID: 3FPD, 3RJW) and Human GLP MT (PDB ID: 6MBO, 6MBP).
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Affiliation(s)
- Ziaur Rahman
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Mohd Rabi Bazaz
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Geetanjali Devabattula
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Mohd Abrar Khan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Chandraiah Godugu
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
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Dutta Choudhury S, Islam A, Abedin J, Hagan E, Shano S, Rahman N, Shermin R, Rahman Z, Shirin T, Daszak P, Sabrina Flora M, H Epstein J. Prevalence and genetic diversity of Coronavirus in human in Bangladesh. Int J Infect Dis 2020. [PMID: 33039608 PMCID: PMC7817406 DOI: 10.1016/j.ijid.2020.11.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Rahman Z, Dwivedi DK, Jena GB. The intervention of tert-butylhydroquinone protects ethanol-induced gastric ulcer in type II diabetic rats: the role of Nrf2 pathway. Can J Physiol Pharmacol 2020; 99:522-535. [PMID: 33095998 DOI: 10.1139/cjpp-2020-0173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ethanol consumption increases the prevalence of gastric ulcer (GU) in rats with type II diabetes (T2D). Induction of GU by absolute ethanol (5 mL/kg or 3.94 g/kg) in the animal model resembles human ulcer characteristics. The aim was to investigate the role of the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway in the treatment of GU in diabetic condition. The rats were exposed to absolute ethanol 1 h before sacrifice and T2D was induced by combined exposure of high-fat diet and low dose streptozotocin. Pretreatment of tert-butylhydroquinone (tBHQ) (25 and 50 mg/kg), metformin (500 mg/kg), and omeprazole (20 mg/kg) were given once daily for last three consecutive weeks. In ethanol-exposed diabetic rats, pretreatment with tBHQ, omeprazole, and metformin reduced gastric mucosal lesion, ulcer index, histological alterations, malondialdehyde level, and apoptosis. Furthermore, the intervention of tBHQ, omeprazole, and metformin improved the integrity of the stomach mucosa, glutathione, gastric pH, collagen, and goblet cells. tBHQ treatment improved ethanol-induced alterations of Nrf2, catalase, heat shock protein 70 (HSP70), NF-κB, and endothelin-1 expressions in diabetic rats. In diabetic conditions, the incidence of GU is increased due to elevated levels of reactive oxygen species, inflammatory mediators, depleted levels of cellular antioxidants, and altered gastric parameters. The tBHQ intervention could be a rational strategy to protect these changes.
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Affiliation(s)
- Ziaur Rahman
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S. Nagar, Punjab 160062, India
| | - Durgesh Kumar Dwivedi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S. Nagar, Punjab 160062, India
| | - G B Jena
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S. Nagar, Punjab 160062, India
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Nawab J, Wang X, Khan S, Tang YT, Rahman Z, Ali A, Dotel J, Li G. New insights into the bioaccumulation of persistent organic pollutants in remote alpine lakes located in Himalayas, Pakistan. Environ Pollut 2020:114952. [PMID: 32933786 DOI: 10.1016/j.envpol.2020.114952] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 05/13/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
The current study assesses the persistent organic pollutants (POPs) in water and their bioaccumulation in Brown Trout (BT) and Rainbow Trout (RT) present in the remote alpine lakes (RALs) of Himalayas, Pakistan. Hence, these environments might receive POPs by long range atmospheric transport (LRAT) with little interferences from local anthropogenic activities. The potential transportation pathways for such accumulation can be atmospheric precipitation, melting ice and glacial runoff. The results indicated that the sum of mean concentrations of organochlorine pesticides (OCPs (DDTs + HCHs)) in water of Glacial-fed lakes, Ice melting-fed lake and Rain-fed lake ranged from 0.21 to 317, 0.14-293, 0.16-235 pg L-1, respectively, while those of polychlorinated biphenyls (PCBs) are 0.275-16.02, 0-15.88, 0.234-14.46 pg L-1, respectively. Similarly, the sum of mean concentrations of all investigated PCBs and OCPs in BT ranged from 0.008 to 0.715 ng g-1 and 0.003-3.835 ng g-1 based on wet weight (ww), while for RT these concentrations were 0.002-0.557 ng g-1 and 0.001-1.402 ng g-1 (ww), respectively in the selected RALs. The PCBs and OCPs levels in both water and fish tissues were observed in order of Glacial-fed lakes > Ice melting-fed lake > Rain-fed lake. The results proposed that melting of ice and glacial water are more significant sources of the contaminants (PCBs and OCPs) in the freshwaters of RALs of Himalayas as compared to rainfall water. The positive correlation between water contamination and the selected fish species confirmed that these can be used as a bio-indicator for future research studies. However, the impact of POPs as they cascade through downstream ecosystems remains largely unexplored. The additional study of contaminant dynamics should be extended to a wide range of mountain environments of Himalayas, where melt-water used for drinking and irrigation purposes by billions of people reside alone the waterways that originated from these remote areas.
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Affiliation(s)
- Javed Nawab
- Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Environmental Sciences Abdul Wali Khan University Mardan, Pakistan
| | - Xiaoping Wang
- Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Sardar Khan
- Department of Environmental Sciences University of Peshawar, Pakistan
| | - Yu-Ting Tang
- School of Geographical Sciences, Research Group of Natural Resources and Environment, University of Nottingham Ningbo China, Ningbo, 315100, China
| | - Ziaur Rahman
- Department of Microbiology, Abdul Wali Khan University Mardan, Pakistan
| | - Abid Ali
- Department of Zoology, Abdul Wali Khan University Mardan, Pakistan
| | - Jagdish Dotel
- Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Gang Li
- CAS Key Laboratory of Urban Environment and Health, Fujian Key Laboratory of Watershed Ecology Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Ningbo Urban Environment Observatory and Monitoring Station, Chinese Academy of Sciences, Ningbo, 315830, China
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Chodisetti SB, Fike A, Bricker K, Domeier PP, Choi NM, Rahman Z. B cell-intrinsic STAT3 regulates the germinal center dark zone. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.151.20] [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] [Indexed: 01/03/2023]
Abstract
Abstract
Germinal centers (GCs) are sites for antibody diversification, somatic hypermutation (SHM) and antigen specific B cell selection. GCs are anatomically divided into two distinct areas known as dark zone (DZ) and light zone (LZ) where SHM and clonal selection occurs, respectively. Although previous studies have suggested a B cell-intrinsic role of STAT3 in GC maintenance and antibody responses, how STAT3 signaling in B cells may maintain GCs for B cell selection is not clear. Using immunization and infection models, we show that STAT3 in B cells regulates the GC DZ, resulting in decreased high affinity antibody production. STAT3 deficient DZ B cells demonstrate a decreased cell proliferation and increased apoptotic activity. Further, STAT3 deletion in B cells led to defects in plasma cell formation and B cell memory response. Using GC B cell specific STAT3 conditional knockout mice and GC B cell culture system, we show that STAT3 deficient GC B cells display low amounts of FOXO1, a critical transcription factor required for GC DZ program. Transcriptomic analysis of GC B cells from STAT3 deficient and sufficient mice reveals STAT3-mediated gene regulation of multiple cellular pathways known to be involved in GC DZ maintenance. In conclusion, STAT3 signaling in B cells controls the GC DZ, which, in turn, helps maintain GCs for high-affinity antibody production. Our findings identify STAT3 as a novel target for enhancing humoral immunity as well as for the treatment of diseases involving abnormal GC activity.
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Affiliation(s)
| | - Adam Fike
- 1Pennsylvania State Univ. Col. of Med
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Uddin MJ, Rahman AF, Rahman S, Momenuzzaman NM, Rahman A, Majumder AS, Mohibullah AM, Chowdhury AH, Malik FN, Ahsan SA, Mohsin K, Haq MM, Chowdhury AW, Sohrabuzzaman AM, Rahman M, Chakraborty B, Rahman R, Khan SR, Khan KN, Reza AM, Hussain KS, Rashid M, Choudhury AK, Karmakar KK, Ali Z, Alam N, Rahman Z, Kabir CS, Banik D, Dutta A, Badiuzzaman M, Islam AW, Sium AH, Hossain MD, Ahmed N, Jahan J, Islam MS, Arefin MM, Cader FA, Banerjee SK, Hoque H, Shofiuddin M, Selim A, Das PK, Ahmed M, Dutto B, Alam S, Paul GK, Paul SK, Azam MG. National Clinical Guidance for the Management of Cardiovascular Intervention in the COVID-19 Pandemic: From Bangladesh Society of Cardiovascular Interventions (BSCI). Mymensingh Med J 2020; 29:488-494. [PMID: 32506111] [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: 06/11/2023]
Abstract
Since the first recorded case of SARS-CoV-2 in Bangladesh on 8th March 2020, COVID-19 has spread widely through different regions of the country, resulting in a necessity to re-evaluate the delivery of cardiovascular services, particularly procedures pertaining to interventional cardiology in resource-limited settings. Given its robust capacity for human-to-human transmission and potential of being a nosocomial source of infection, the disease has specific implications on healthcare systems and health care professionals faced with performing essential cardiac procedures in patients with a suspected or confirmed diagnosis of COVID-19. The limited resources in terms of cardiac catheterization laboratories that can be designated to treat only COVID positive patients are further compounded by the additional challenges of unavailability of widespread rapid testing on-site at tertiary cardiac hospitals in Bangladesh. This document prepared for our nation by the Bangladesh Society of Cardiovascular Interventions (BSCI) is intended to serve as a clinical practice guideline for cardiovascular health care professionals, with a focus on modifying standard practice of care during the COVID-19 pandemic, in order to ensure continuation of adequate and timely treatment of cardiovascular emergencies avoiding hospital-based transmission of SARS-COV-2 among healthcare professionals and the patients. This is an evolving document based on currently available global data and is tailored to healthcare systems in Bangladesh with particular focus on, but not limited to, invasive cardiology facilities (cardiac catheterization, electrophysiology & pacing labs). This guideline is limited to the provision of cardiovascular care, and it is expected that specific targeted pharmaco-therapeutics against SARS-CoV-2 be prescribed as stipulated by the National Guidelines on Clinical Management of Corona virus Disease 2019 (COVID-19) published by the Director General of Health Services, Ministry of Health and Family Welfare of Bangladesh.
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Affiliation(s)
- M J Uddin
- Professor MG Azam, National Institute of Cardiovascular Diseases, Dhaka, Bangladesh; E-mail:
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Abstract
Various antiretroviral drugs do not kill or cure the human immunodeficiency virus (HIV) but do prevent the replication of the virus. The combination of antiretroviral drugs is known as highly active antiretroviral therapy (HAART). Current drug therapies effectively suppress HIV-1 replication but do not inactivate the provirus that persists in latent reservoirs. Guide RNA (gRNA)-directed CRISPR/Cas9 system can be used for sequence-specific attacks on this proviral DNA. The biggest achievement might be the complete elimination of HIV from infected cells. A study revealed that the tail injection, in transgenic mice and rats having HIV-1 genome, of an adenoassociated virus (AAV) vector expressing a short version of the Cas9 endonuclease (saCas9) and the gRNAs resulted in the cleavage of integrated HIV-1 DNA and excision of a DNA fragment spanning between the LTR and Gag gene in the spleen, liver, heart, kidney, and circulating lymphocytes. HIV-1 has capacity to escape the attack on its genome from most of inhibitors. Thus, to achieve successful antiretroviral treatment, combinations of several antiviral therapies have been applied that are based on two important facts. The first is that multiple drugs lead to synergistic or additive inhibition, and the second is that the combinational therapy increases chances of drug resistance. The success that has been achieved with the help of the genetically engineered tool CRISPR is that dCas9 protein alone can efficiently silence viral gene expression in bacteria with sgRNA. All the reported investigations have indicated that CRISPR/Cas9 can be used as immune machinery into human cells in the form of novel antivirus tools.
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Affiliation(s)
- Rabia Hashmat
- Department of Biological Sciences, Forman Christian College University Lahore, Pakistan
| | | | - Ziaur Rahman
- Department of Biotechnology, Faculty of Life Sciences, UCP, Lahore, Pakistan
| | - Khalid Mahmood Anjum
- Department of Wildlife & Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Atif Yaqoob
- Department of Zoology, GC University Lahore, Pakistan
| | - Muhammad Imran
- Institute of Biochemistry & Biotechnology, UVAS, Lahore, Pakistan
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Rahman Z, Dwivedi DK, Jena GB. Ethanol-induced gastric ulcer in rats and intervention of tert-butylhydroquinone: Involvement of Nrf2/HO-1 signalling pathway. Hum Exp Toxicol 2019; 39:547-562. [PMID: 31876185 DOI: 10.1177/0960327119895559] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Gastric ulcer (GU) is the most common health concern that occurs due to alcohol consumption, smoking and physiological stress. Ethanol-induced GU in animal model resembles the pathophysiology of human ulcer. The present study was designed to investigate the cytoprotective and anti-inflammatory properties of tert-butylhydroquinone (tBHQ), a nuclear factor erythroid 2-related factor 2 (Nrf2) activator, against gastric mucosal damage induced by acute exposure of ethanol (5 ml/kg). The intervention of tBHQ (25 and 50 mg/kg, per os (po)) and omeprazole (20 mg/kg, po) was done for 10 consecutive days. Omeprazole was chosen as a standard drug because it is prescribed for the treatment of GU. Pretreatment of tBHQ decreased gastric mucosal lesion, ulcer index, apoptotic cells and lipid peroxidation level induced by ethanol. Furthermore, the intervention of tBHQ increased gastric mucosa integrity, pH, reduced glutathione, collagen and mucus-producing goblet cells. Intervention of tBHQ increased the expression of antioxidant markers such as Nrf2, haeme oxygenase-1 and catalase and decreased the expressions of inflammatory markers such as nuclear factor kappa-light-chain-enhancer of activated B cells and cyclooxygenase-2. The cytoprotective potential of tBHQ against gastric mucosal damage might be due to its ability to enhance cellular antioxidants and anti-inflammatory responses.
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Affiliation(s)
- Z Rahman
- Facility for Risk Assessment and Intervention Studies, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Punjab, India
| | - D K Dwivedi
- Facility for Risk Assessment and Intervention Studies, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Punjab, India
| | - G B Jena
- Facility for Risk Assessment and Intervention Studies, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Punjab, India
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Goel D, Un Nisa K, Reza MI, Rahman Z, Aamer S. Aberrant DNA Methylation Pattern may Enhance Susceptibility to Migraine: A Novel Perspective. CNSNDDT 2019; 18:504-515. [DOI: 10.2174/1871527318666190809162631] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 06/04/2019] [Accepted: 07/27/2019] [Indexed: 12/17/2022]
Abstract
In today’s world, migraine is one of the most frequent disorders with an estimated world prevalence of 14.7% characterized by attacks of a severe headache making people enfeebled and imposing a big socioeconomic burden. The pathophysiology of a migraine is not completely understood however there are pieces of evidence that epigenetics performs a primary role in the pathophysiology of migraine. Here, in this review, we highlight current evidence for an epigenetic link with migraine in particular DNA methylation of numerous genes involved in migraine pathogenesis. Outcomes of various studies have explained the function of DNA methylation of a several migraine related genes such as RAMP1, CALCA, NOS1, ESR1, MTHFR and NR4A3 in migraine pathogenesis. Mentioned data suggested there exist a strong association of DNA methylation of migraine-related genes in migraine. Although we now have a general understanding of the role of epigenetic modifications of a numerous migraine associated genes in migraine pathogenesis, there are many areas of active research are of key relevance to medicine. Future studies into the complexities of epigenetic modifications will bring a new understanding of the mechanisms of migraine processes and open novel approaches towards therapeutic intervention.
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Affiliation(s)
- Divya Goel
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education & Research, Guwahati, India
| | - Kaiser Un Nisa
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education & Research, SAS Nagar, India
| | - Mohammad Irshad Reza
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education & Research, SAS Nagar, India
| | - Ziaur Rahman
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education & Research, SAS Nagar, India
| | - Shaikh Aamer
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education & Research, SAS Nagar, India
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Rahman Z, Mattingly SP, Casey C, Madanu SK. Mastery-Level Achievement Method for Assessing Module-Based Educational Tools. J Prof Issues Eng Educ Pract 2019. [DOI: 10.1061/(asce)ei.1943-5541.0000417] [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] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- Ziaur Rahman
- Postdoctoral Research Associate, Dept. of Civil Engineering, Univ. of Texas at Arlington, Nedderman Hall 416 Yates St., Box 19308, Arlington, TX 76019-0308 (corresponding author). ORCID:
| | - Stephen P. Mattingly
- Associate Professor, Dept. of Civil Engineering, Univ. of Texas at Arlington, Nedderman Hall 416 Yates St., Box 19308, Arlington, TX 76019-0308
| | - Colleen Casey
- Associate Professor, College of Architecture, Planning and Public Affairs, Univ. of Texas at Arlington, 610 Nedderman, Arlington, TX 76019
| | - Sunil K. Madanu
- Postdoctoral Researcher, Dept. of Civil Engineering, Univ. of Texas at Arlington, Nedderman Hall 416 Yates St., Box 19308, Arlington, TX 76019-0308. ORCID:
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