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Rashid H, Smith CM, Convers V, Clark K, Javed A. Runx2 deletion in hypertrophic chondrocytes impairs osteoclast mediated bone resorption. Bone 2024; 181:117014. [PMID: 38218304 PMCID: PMC10922707 DOI: 10.1016/j.bone.2024.117014] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/27/2023] [Accepted: 01/05/2024] [Indexed: 01/15/2024]
Abstract
Deletion of Runx2 gene in proliferating chondrocytes results in complete failure of endochondral ossification and perinatal lethality. We reported recently that mice with Runx2 deletion specifically in hypertrophic chondrocytes (HCs) using the Col10a1-Cre transgene survive and exhibit enlarged growth plates due to decreased HC apoptosis and cartilage resorption. Bulk of chondrogenesis occurs postnatally, however, the role of Runx2 in HCs during postnatal chondrogenesis is unknown. Despite limb dwarfism, adult homozygous (Runx2HC/HC) mice showed a significant increase in length of growth plate and articular cartilage. Consistent with doubling of the hypertrophic zone, collagen type X expression was increased in Runx2HC/HC mice. In sharp contrast, expression of metalloproteinases and aggrecanases were markedly decreased. Impaired cartilage degradation was evident by the retention of significant amount of safranin-O positive cartilage. Histomorphometry and μCT uncovered increased trabecular bone mass with a significant increase in BV/TV ratio, trabecular number, thickness, and a decrease in trabecular space in Runx2HC/HC mice. To identify if this is due to increased bone synthesis, expression of osteoblast differentiation markers was evaluated and found to be comparable amongst littermates. Histomorphometry confirmed similar number of osteoblasts in the littermates. Furthermore, dynamic bone synthesis showed no differences in mineral apposition or bone formation rates. Surprisingly, three-point-bending test revealed Runx2HC/HC bones to be structurally less strong. Interestingly, both the number and surface of osteoclasts were markedly reduced in Runx2HC/HC littermates. Rankl and IL-17a ligands that promote osteoclast differentiation were markedly reduced in Runx2HC/HC mice. Bone marrow cultures were performed to independently establish Runx2 and hypertrophic chondrocytes role in osteoclast development. The culture from the Runx2HC/HC mice formed significantly fewer and smaller osteoclasts. The expression of mature osteoclast markers, Ctsk and Mmp9, were significantly reduced in the cultures from Runx2HC/HC mice. Thus, Runx2 functions extend beyond embryonic development and chondrocyte hypertrophy by regulating cartilage degradation, osteoclast differentiation, and bone resorption during postnatal endochondral ossification.
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Affiliation(s)
- Harunur Rashid
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA
| | - Caris M Smith
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA
| | - Vashti Convers
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA
| | - Katelynn Clark
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA
| | - Amjad Javed
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA.
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Fatema K, Islam MJ, Sarker MAI, Elahi KS, Alam MJ, Hasan SJ, Rashid H. Occurrence of microplastics in fish gastrointestinal tracts belongs to different feeding habits from the Bangladesh coast of the Bay of Bengal. Environ Sci Pollut Res Int 2024; 31:24329-24343. [PMID: 38443534 DOI: 10.1007/s11356-024-32681-8] [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: 07/20/2023] [Accepted: 02/24/2024] [Indexed: 03/07/2024]
Abstract
The Bay of Bengal (BoB) is home to a range of commercially important species with different food habits and feeding features. Microplastic (MP) contamination in the fish of BoB, like in many other marine environments, is a significant environmental concern. The study aimed to investigate the presence of microplastics (MPs) in the gastrointestinal tracts (GITs) of selected commercial marine fishes from the Bangladesh coast of the BoB. Six fish species (Escualosa thoracata, Tenualosa ilisha, Johnius belangerii, Trichiurus lepturus, Planiliza parsia, and Mystus gulio) were investigated (n = 120) following hydrogen peroxide digestion, and floatation (saline solution) protocols. After analyses, a total number of 696 MPs (dimension 0.3 to 5 mm) were identified. Moreover, the highest occurrence of MPs in fish GITs was found in planktivorous fish (average of 7.7 items/individual), followed by omnivorous (average of 5.2 items/individual), and carnivorous fish (average of 4.6 items/individual) (p < 0.001). However, planktivorous E. thoracata showed the highest number of MPs per g of GIT (average of 30.99 items/g GIT), whereas T. ilisha showed the lowest count (average of 0.77 items/g GIT). Different types of MPs (fibers (19 to 76%), fragments (6 to 61%), films (8 to 35%), microbeads (0 to 5%), and foams (0 to 2%)) were also observed. In terms of the color of MPs, the transparent, black, green, and blue types were the most common. Polymers were found as polyethylene (35 to 43%), polyethylene terephthalate (28 to 35%), polyamide (20 to 31%), and polystyrene (0 to 7%). The study provides a significant incidence of MPs in fish from the Bangladesh part of the BoB, which is very concerning. Therefore, long-term research is indispensable to ascertain the variables affecting the presence of MPs in fish, their origins, and their potential effects on the BoB fisheries. Stringent policies on plastic use and disposal should be strongly urged in this coastal region.
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Affiliation(s)
- Kaniz Fatema
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
- Department of Fisheries Management, Hajee Mohammad Danesh Science and Technology University, Dinajpur, 5200, Bangladesh
| | - Md Jakiul Islam
- Department of Fisheries Technology and Quality Control, Sylhet Agricultural University, Sylhet, 3100, Bangladesh
| | - Md Ashraful Islam Sarker
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
- Department of Fisheries, Ministry of Fisheries and Livestock, Dhaka, Bangladesh
| | - Kazi Shahrukh Elahi
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Md Jahangir Alam
- Department of Fisheries Management, Patuakhali Science and Technology University, Patuakhali, 8602, Bangladesh
| | - Shanur Jahedul Hasan
- Marine Station, Bangladesh Fisheries Research Institute, Cox's Bazar, Bangladesh
| | - Harunur Rashid
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
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Fatema K, Auditi TI, Biswas S, Ayesha SB, Helal Uddin M, Sumon KA, Goswami C, Bhandari RK, Rashid H. Investigations of hemato-biochemical and histopathological parameters, and growth performance of walking catfish (Clarias batrachus) exposed to PET and LDPE microplastics. Environ Toxicol Pharmacol 2023; 102:104250. [PMID: 37595935 DOI: 10.1016/j.etap.2023.104250] [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: 04/01/2023] [Revised: 08/01/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
Fish inhabiting various trophic levels are affected differently as the presence of microplastic (MP) in the water column and their ingestion by fish varies. Walking catfish (Clarias batrachus) inhabits the bottom of the water bodies. To understand the effects of MP, we exposed C. batrachus to two types of MP - polyethylene terephthalate (PET) and low-density polyethylene (LDPE) for 60 days. After exposure, hematological indices, mainly red blood cells and hemoglobin levels decreased, and white blood cells increased significantly compared to the control group (p < 0.05). A significant increase in the levels of blood urea and glucose was observed, and serum glutamic pyruvate transaminase and serum glutamyl oxaloacetic transaminase activity remained elevated (p < 0.05). Histopathological examination of the liver, kidney, intestine, and gills showed morphological alterations. Moreover, MP exposure caused growth retardation (p < 0.05) in C. batrachus. Widespread pollution of water bodies by MP may impose serious ecological risks to bottom-feeding fish in Bangladesh.
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Affiliation(s)
- Kaniz Fatema
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; Department of Fisheries Management, Hajee Mohammad Danesh Science and Technology University, Dinajpur 5200, Bangladesh
| | - Tasnia Islam Auditi
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Shema Biswas
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Sumaiya Binte Ayesha
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md Helal Uddin
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Kizar Ahmed Sumon
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Chayon Goswami
- Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Ramji Kumar Bhandari
- Department of Biology, University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Harunur Rashid
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
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Nomier Y, Khuwaja G, Penakalapati SR, Alshahrani S, Rehman Z, Khawaji R, Alhazmi W, Mubarak A, Alam MF, Anwer T, Rashid H, Shaheen E, Alkashef K. Ethnopharmacological evaluation of Poppy seed oil in combination with Tramadol on behavioral paradigm and on dopamine, and cytokines levels. Eur Rev Med Pharmacol Sci 2023; 27:2077-2090. [PMID: 36930507 DOI: 10.26355/eurrev_202303_31579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
OBJECTIVE The present study was taken up to evaluate the combination of two drugs in the management of behavioral disorders such as locomotor activity, muscle relaxation, analgesic, and anxiolytic activity. MATERIALS AND METHODS In the methodology, Wistar rats weighing (150-180 g) were divided into six groups of 6 each (n=6). All the animals (groups II to VI) were subjected to stress and analyzed for anxiolytic activity using an elevated plus maze. The animals were treated for 28 days with poppy seed oil in lower and higher doses (1,000 and 2,000 mg/kg), tramadol in lower and higher doses (1.5 and 3 mg/kg) as individual groups, and one group with a combination of both drugs in lower doses. RESULTS The results depicted showed that the combined treatment had significantly (**p <0.001) improvised behavior deficits, extemporized, and diminished anxiety-like attitude in rats, and showed the analgesic property in a significant manner. The pro-inflammatory cytokines TNF-α and IL-1β were evaluated in the serum and were observed to be lessened the values of both in a significant manner with the co-administration of both the test drugs. The dopamine concentrations were also determined in the serum, which disclosed a decline (**p <0.001) significantly. CONCLUSIONS It was concluded from the results that a combined effect of drugs might be beneficial in the management of behavioral disorders and pain management.
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Affiliation(s)
- Y Nomier
- Department of Pharmacology and Toxicology, Pharmacy College, Jazan University, Saudi Arabia.
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Fatema K, Rahman T, Islam MJ, Sumon KA, Uddin MH, Hasan SJ, Kawsar SMA, Arakawa H, Haque MM, Rashid H. Microplastics pollution in the river Karnaphuli: a preliminary study on a tidal confluence river in the southeast coast of Bangladesh. Environ Sci Pollut Res Int 2023; 30:38853-38868. [PMID: 36586026 DOI: 10.1007/s11356-022-24998-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 09/15/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
Bangladesh is a deltaic country in Asia, and its riverine systems ultimately drain into the Bay of Bengal. Plastic is a severe environmental issue for coastal-marine ecosystems due to the indiscriminate usage and discarding of plastic items in the upstream river that eventually find their route into the Bay of Bengal. Microplastics (MPs) are widespread pollutants in almost all environmental compartments, including aquatic environments. This study aimed to quantify and understand the distribution of microplastics in surface water and sediments of the river Karnaphuli, a tidal confluence river adjacent to the Chattogram seaport city of Bangladesh, a highly inhabited and industrial area on the southeast coast of the Bay of Bengal. A manta trawl net (300-µm mesh size) was used to collect surface water samples, while an Ekman dredge was used to collect sediment samples. The concentrations of microplastics in the surface water of the river Karnaphuli during late monsoon, winter, and early summer were recorded to be 120,111.11, 152,222.22, and 164,444.44 items/km2, respectively, while in sediments, those were recorded to be 103.83, 137.50, and 103.67 items/kg, respectively. A higher abundance of microplastics was observed in downstream surface water (228,888.88 items/km2) and sediments (164.17 items/kg). Smaller sizes (0.3 to 0.5 mm) of microplastics were predominant, fibers or threads were the frequent types, and black was the most common color in the river Karnaphuli. The Fourier transform infrared analysis revealed that polyethylene terephthalate (surface water: 22%, sediments: 19%), polyamide (surface water: 15%, sediments: 13%), polyethylene (surface water: 12%, sediments: 18%), polystyrene (surface water: 13%, sediments: 11%), and alkyd resin (surface water: 13%, sediments: 10%) were the most prevalent polymers in the river Karnaphuli. Moreover, there was a moderate positive correlation between MPs abundance in surface water and sediments. Therefore, improved long-term research (in different seasons with horizontal and vertical monitoring) is necessary in order to accurately determine the flux of microplastics from the river Karnaphuli to the Bay of Bengal.
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Affiliation(s)
- Kaniz Fatema
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
- Department of Fisheries Management, Hajee Mohammad Danesh Science and Technology University, Dinajpur, 5200, Bangladesh
| | - Turabur Rahman
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
- Marine Station, Bangladesh Fisheries Research Institute, Cox's Bazar, Bangladesh
| | - Md Jakiul Islam
- Department of Fisheries Technology and Quality Control, Faculty of Fisheries, Sylhet Agricultural University, Sylhet, 3100, Bangladesh
| | - Kizar Ahmed Sumon
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Md Helal Uddin
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Shanur Jahedul Hasan
- Marine Station, Bangladesh Fisheries Research Institute, Cox's Bazar, Bangladesh
| | - S M Abe Kawsar
- Department of Chemistry, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Hisayuki Arakawa
- Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Md Mahfuzul Haque
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Harunur Rashid
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
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Khass M, Rashid H, Burrows PD, Javed A, Schroeder HW. Corrigendum: Loss of early B cell protein λ5 decreases bone mass and accelerates skeletal aging. Front Immunol 2023; 13:1114732. [PMID: 36861066 PMCID: PMC9970683 DOI: 10.3389/fimmu.2022.1114732] [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: 12/02/2022] [Accepted: 12/22/2022] [Indexed: 02/17/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fimmu.2022.906649.].
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Affiliation(s)
- Mohamed Khass
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States,*Correspondence: Harry W. Schroeder Jr, ; Mohamed Khass,
| | - Harunur Rashid
- Department of Oral and Maxillofacial Surgery, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Peter D. Burrows
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Amjad Javed
- Department of Oral and Maxillofacial Surgery, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Harry W. Schroeder
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States,Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States,*Correspondence: Harry W. Schroeder Jr, ; Mohamed Khass,
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Kirk S, Rashid H, Demisse E, Wilson T, Heath M, De-Kam P. NON-CLINICAL SAFETY EVALUATION OF A NOVEL THERAPEUTIC VACCINE FOR PEANUT ALLERGY. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.673] [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: 11/11/2022]
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Khass M, Rashid H, Burrows PD, Javed A, Schroeder HW. Loss of early B cell protein λ5 decreases bone mass and accelerates skeletal aging. Front Immunol 2022; 13:906649. [PMID: 36189270 PMCID: PMC9516392 DOI: 10.3389/fimmu.2022.906649] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/16/2022] [Indexed: 11/13/2022] Open
Abstract
The early B cell protein λ5 is an essential component of the surrogate light chain and the preB cell receptor (preBCR), which is critical for optimal B cell development. To investigate the effect of λ5 and/or B cells on bone acquisition over time, we developed a panel of JH -/- , λ5-/-, JH -/- λ5-/-, and wild-type (WT) BALB/c mice and then studied postnatal bone development and aging in these mice at one, six, twelve, and twenty-two months of age. The trabecular bone volume over total volume (BV/TV) in JH -/- mice was similar to WT mice at all ages. In contrast, at six months of age and thereafter, λ5-/- and JH -/- λ5-/- mice demonstrated a severe decrease in trabecular bone mass. Surprisingly, bone mass in six-month-old λ5-/- and JH -/- λ5-/- mice was similar to or even lower than in aged (twenty-two-months) WT mice, suggesting accelerated skeletal aging. The postnatal development and the acquisition of cortical bone mass in JH -/- λ5-/- mice were generally comparable to WT. However, JH -/- λ5-/- mice showed a significant decrease in cortical BV/TV at six- and twelve months of age. To examine the contribution of λ5 and B cells to postnatal bone synthesis, we separately transplanted whole bone marrow cells from JH -/- λ5-/- and WT mice into irradiated JH -/- λ5-/- and WT recipients. WT recipients of JH -/- λ5-/- marrow cells failed to show acquisition of trabecular bone mass, whereas transplanting WT marrow cells into JH -/- λ5-/- recipients led to the recovery of trabecular bone mass. Transfer of WT marrow cells into JH -/- λ5-/- mice promoted synthesis of new cortical and trabecular bone. Our findings indicate that λ5 plays a major role in preserving bone mass during postnatal development and skeletal aging which is distinct from its role in B cell development. The absence of both λ5 and B cells in JH -/- λ5-/- mice leads to delayed acquisition of cortical bone during postnatal development. Dissecting the mechanism(s) by which λ5 regulates bone homeostasis may provide new avenues for the treatment of age-related loss of bone mass and osteoporosis.
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Affiliation(s)
- Mohamed Khass
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Harunur Rashid
- Department of Oral and Maxillofacial Surgery, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Peter D. Burrows
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Amjad Javed
- Department of Oral and Maxillofacial Surgery, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Harry W. Schroeder
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
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Sherwani M, Rashid H, Kwon Y, Athar M, Yusuf N, Elmets C. 619 CP31398, which reverses UV-induced p53 mutations, does not undo ultraviolet radiation-induced immune suppression. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.629] [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: 10/17/2022]
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Aguilar CAM, Sherwani MA, Tsuruta Y, Rashid H, Crossman DK, Yusuf N, Xu H. Triggering receptor expressed on myeloid cells (Trem)-1 plays important roles in UVB induced immune suppression and cutaneous carcinogenesis. The Journal of Immunology 2022. [DOI: 10.4049/jimmunol.208.supp.54.21] [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: 01/04/2023]
Abstract
Abstract
American Cancer Society acknowledges that most skin cancers result from exposure to ultraviolet (UV) rays in sunlight. UVB radiation induces mutant cells as well as immune suppression. Tumors only occur when mutant cells are in an immune suppressive environment. The mechanisms for UVB induced immune suppression are yet to be fully elucidated. The goal of this work is to explore new mechanisms for UVB induced immune suppression and skin carcinogenesis by using advanced technology. Analysis of UVB exposed mouse (Nanostring) and human (RNAseq) skin shows that triggering receptor expressed on myeloid cells (TREM)-1 signal pathway is the top canonic pathway increased by UVB. TREM-1 has roles in inflammatory diseases and cancers. However, its role in UVB induced immune suppression and skin cancers is not understood. We have found by using multi-color flow cytometry that UVB induces TREM-1 expression in a subset of conventional dendritic cell type 2 (cDC2) in the draining lymph nodes (LN). TREM-1+ cDC2 cells are barely detected in normal LN and express a high level of the co-inhibitory molecule PD-L1. In functional assays, treatment of mice with a specific TREM-1 blocking peptide LP-17 significantly diminishes UVB-induced suppression of contact hypersensitivity responses that are mediated by T cells. Further, mice treated with this peptide show decreased incidence of photocarcinogenesis and reduced number of tumors. In summary, our findings demonstrate that UVB induces the development of a novel TREM-1+ cDC2 cell subset and that TREM-1 has an important role in UVB induced immune suppression and skin carcinogenesis. Importantly, our study implies new strategies for targeting TREM-1 in the prevention and treatment of UVB induced skin cancers.
Supported by grants from NIH (R01AR072213 and R01AI154842)
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Affiliation(s)
| | | | | | | | | | | | - Hui Xu
- 1Dermatology, Univ. of Alabama at Birmingham
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Khalid L, Khalid A, Rashid H. 298 Need for intrapartum antibiotics prophylaxis in women with prior history of gbs carriage. Eur J Obstet Gynecol Reprod Biol 2022. [DOI: 10.1016/j.ejogrb.2021.11.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Sherwani MA, Ahmad I, Lewis MJ, Abdelgawad A, Rashid H, Yang K, Chen CY, Raman C, Elmets CA, Yusuf N. Type I Interferons Enhance the Repair of Ultraviolet Radiation-Induced DNA Damage and Regulate Cutaneous Immune Suppression. Int J Mol Sci 2022; 23:1822. [PMID: 35163747 PMCID: PMC8836948 DOI: 10.3390/ijms23031822] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 11/23/2022] Open
Abstract
Type I interferons (IFNs) are important enhancers of immune responses which are downregulated in human cancers, including skin cancer. Solar ultraviolet (UV) B radiation is a proven environmental carcinogen, and its exposure contributes to the high prevalence of skin cancer. The carcinogenic effects of UV light can be attributed to the formation of cyclobutane pyrimidine dimers (CPD) and errors in the repair and replication of DNA. Treatment with a single dose of UVB (100 mJ/cm2) upregulated IFNα and IFNβ in the skin of C57BL/6 mice. IFNα and IFNβ were predominantly produced by CD11b+ cells. In mice lacking the type I IFN receptor 1 (IFNAR1), the repair of CPD following cutaneous exposure to a single dose of UVB (100 mJ/cm2) was decreased. UVB induced the expression of the DNA repair gene xeroderma pigmentosum A (XPA) in wild-type (WT) mice. In contrast, such treatment in IFNAR1 (IFNAR1-/-) mice downregulated XPA. A local UVB regimen consisting of UVB radiation (150 mJ/cm2) for 4 days followed by sensitization with hapten 2,4, dinitrofluorobenzene (DNFB) resulted in significant suppression of immune responses in both WT and IFNAR1-/- mice. However, there were significantly higher CD4+CD25+Foxp3+ regulatory T-cells in the draining lymph nodes of IFNAR1-/- mice in comparison to WT mice. Overall, our studies reveal a previously unknown action of type I IFNs in the repair of photodamage and the prevention of UVB-induced immune suppression.
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Affiliation(s)
- Mohammad Asif Sherwani
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (M.A.S.); (I.A.); (M.J.L.); (A.A.); (H.R.); (K.Y.); (C.A.E.)
| | - Israr Ahmad
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (M.A.S.); (I.A.); (M.J.L.); (A.A.); (H.R.); (K.Y.); (C.A.E.)
| | - Monica J. Lewis
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (M.A.S.); (I.A.); (M.J.L.); (A.A.); (H.R.); (K.Y.); (C.A.E.)
| | - Ahmed Abdelgawad
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (M.A.S.); (I.A.); (M.J.L.); (A.A.); (H.R.); (K.Y.); (C.A.E.)
| | - Harunur Rashid
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (M.A.S.); (I.A.); (M.J.L.); (A.A.); (H.R.); (K.Y.); (C.A.E.)
| | - Kevin Yang
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (M.A.S.); (I.A.); (M.J.L.); (A.A.); (H.R.); (K.Y.); (C.A.E.)
| | - Ching-Yi Chen
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA;
| | - Chander Raman
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA;
| | - Craig A. Elmets
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (M.A.S.); (I.A.); (M.J.L.); (A.A.); (H.R.); (K.Y.); (C.A.E.)
- O’Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Veteran Affairs Medical Center, Birmingham, AL 35294, USA
| | - Nabiha Yusuf
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA; (M.A.S.); (I.A.); (M.J.L.); (A.A.); (H.R.); (K.Y.); (C.A.E.)
- O’Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Veteran Affairs Medical Center, Birmingham, AL 35294, USA
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KASHEM T, Begum N, Nobi F, Nomani S, Arefin S, Rashid H. POS-251 Chronic Kidney Disease progression during Ramadan in hot and humid country like Bangladesh. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.270] [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: 10/19/2022] Open
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Hosen MA, Ovi FK, Rashid H, Hasan MH, Khalek MA, Hasan M, Easmin F, Rumi NA, Islam MS. Characterization of Vibrio spp. in environmental water samples collected from flood prone areas of Bangladesh and their antibiotic resistance profile. AIMS Microbiol 2022; 7:471-480. [PMID: 35071943 PMCID: PMC8712533 DOI: 10.3934/microbiol.2021028] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/09/2021] [Indexed: 11/18/2022] Open
Abstract
Last cholera epidemic has been recorded in Bangladesh between 1992-1993, while few sporadic localized outbreaks have been reported as recent as 2005. Serotype O1 of Vibrio cholera is considered as the principal causative agent which transmits through contaminated drinking water resulting that epidemic. Therefore, the objective of this research was to isolate V. cholera in 3 different water sources; River, pond and tube-well, in 5 different locations of Gazipur, Bangladesh, and to analyze their antibiogram study. A total of 45 water samples were randomly collected for the isolation and identification of Vibrio spp. Samples are then serially diluted in alkaline peptone water and streak on Thiosulfate Citrate Bile Salt Sucrose-TCBS agar for quantification of V. spp. For V. cholera isolation water samples were first enriched in nutrient broth at 37 °C for 16 hours followed by cultivation in selective media; TCBS agar at 37 °C for 24 hours. Yellow colonies on TCBS agar were screed as V. cholera and was confirmed by analyzing their biochemical characteristics like Catalase, Oxidase, MR, VP, Indole, Sugar fermentation. Following isolation antibiotic sensitivity test was performed on each V. cholera isolates to determine their antibiotic sensitivity profile. The results showed, out of 45 samples 12 contained V. cholera. Tube-well water has significantly lower concentration (log CFU/mL) of V. spp. than river and pond water (P < 0.05). Bacterial concentration doesn't deviate (P > 0.05) significantly in 5 different location the sample was collected from. All the 12 isolates were sensitive to Gentamicin and ciprofloxacin (100%), while Chloramphenicol (91.67%), Sulfamethoxazole (91.67%), Azithromycin (66.67%) showed high sensitivity. Isolates showed marginal sensitivity towards Tetracycline (33.33%), and Cephalexin (16.67%) and 100% resistance against antibiotics like Vancomycin, Penicillin, Erythromycin, and Nalidixic Acid. Based on these data we recommend using tube-well water instead of river and pond water for drinking purposes. Furthermore, we suggest selective use of sensitive antimicrobials listed here for therapeutics of cholera outbreak.
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Affiliation(s)
- Md Aoulad Hosen
- Department of Microbiology, Gono Bishwabidyalay, Dhaka, Bangladesh
| | | | | | | | | | - Mahmudul Hasan
- Department of Microbiology, Gono Bishwabidyalay, Dhaka, Bangladesh
| | - Farhana Easmin
- Department of Microbiology, Gono Bishwabidyalay, Dhaka, Bangladesh
| | - Nazmi Ara Rumi
- Department of Microbiology, Hajee Mohammad Danesh Science & Technology University Dinajpur, Bangladesh
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Hasan M, Sumon KA, Siddiquee MM, Bhandari RK, Prodhan MDH, Rashid H. Thiamethoxam affects the developmental stages of banded gourami (Trichogaster fasciata). Toxicol Rep 2022; 9:1233-1239. [DOI: 10.1016/j.toxrep.2022.05.017] [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] [Received: 10/04/2021] [Revised: 05/16/2022] [Accepted: 05/21/2022] [Indexed: 10/18/2022] Open
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16
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Dang D, Kuhn L, Fooladi E, Ky V, Cheung K, Rashid H, Zaman S. Predictors of Radial to Femoral Artery Access Crossover During Primary Percutaneous Coronary Intervention for ST-Elevation Myocardial Infarction. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.613] [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: 11/25/2022]
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17
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Rashid H, Chen H, Javed A. Runx2 is required for hypertrophic chondrocyte mediated degradation of cartilage matrix during endochondral ossification. Matrix Biol Plus 2021; 12:100088. [PMID: 34805821 PMCID: PMC8586806 DOI: 10.1016/j.mbplus.2021.100088] [Citation(s) in RCA: 12] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 09/08/2021] [Accepted: 10/18/2021] [Indexed: 10/25/2022] Open
Abstract
The RUNX2 transcription factor is a key regulator for the development of cartilage and bone. Global or resting chondrocyte-specific deletion of the Runx2 gene results in failure of chondrocyte hypertrophy, endochondral ossification, and perinatal lethality. The terminally mature hypertrophic chondrocyte regulates critical steps of endochondral ossification. Importantly, expression of the Runx2 gene starts in the resting chondrocyte and increases progressively, reaching the maximum level in hypertrophic chondrocytes. However, the RUNX2 role after chondrocyte hypertrophy remains unknown. To answer this question, we deleted the Runx2 gene specifically in hypertrophic chondrocytes using the Col10-Cre line. Mice lacking the Runx2 gene in hypertrophic chondrocytes (Runx2HC/HC ) survive but exhibit limb dwarfism. Interestingly, the length of the hypertrophic chondrocyte zone is doubled in the growth plate of Runx2HC/HC mice. Expression of pro-apoptotic Bax decreased significantly while anti-apoptotic Bcl2 remains unchanged leading to a four-fold increase in the Bcl2/Bax ratio in mutant mice. In line with this, a significant reduction in apoptosis of Runx2HC/HC hypertrophic chondrocyte is noted. A large amount of cartilage matrix is present in the long bones that extend toward the diaphyseal region of Runx2HC/HC mice. This is not due to enhanced synthesis of the cartilage matrix as the expression of both collagen type 2 and aggrecan were comparable among Runx2HC/HC and WT littermates. Our qPCR analysis demonstrates the increased amount of cartilage matrix is due to impaired expression of cartilage degrading enzymes such as metalloproteinase and aggrecanase as well as tissue inhibitor of metalloproteinases. Moreover, a significant decrease of TRAP positive chondroclasts was noted along the cartilage islands in Runx2HC/HC mice. Consistently, qPCR data showed an 81% reduction in the Rankl/Opg ratio in Runx2HC/HC littermates, which is inhibitory for chondroclast differentiation. Finally, we assess if increase cartilage matrix in Runx2HC/HC mice serves as a template for bone and mineral deposition using micro-CT and Von Kossa. The mutant mice exhibit a significant increase in trabecular bone mass compared to littermates. In summary, our findings have uncovered a novel role of Runx2 in apoptosis of hypertrophic chondrocytes and degradation of cartilage matrix during endochondral ossification.
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Key Words
- ACAN, Aggrecan
- Aggrecanase
- Apoptosis
- BAC, Bacterial artificial chromosome
- CCND1, Cyclin D1
- CDK1, Cyclin-dependent kinase 1
- COL10, Collagen type X
- COL2, Collagen type II
- Chondroclast/osteoclast
- Dwarfism
- IHH, Indian hedgehog
- MMP, Matrix metalloproteinase
- Matrix-metalloproteinase
- OPG, Osteoprotegerin
- PCNA, Proliferating cell nuclear antigen
- PTHRP, Parathyroid hormone-related peptide
- RANKL, Receptor activator of nuclear factor Kappa B ligand
- RUNX2, Runt related transcription factor 2
- SOX9, SRY box transcription factor
- TNAP, Tissue-nonspecific alkaline phosphatase
- TRAP, Tartrate-resistant acid phosphatase
- VEGFA, Vascular endothelial growth factor a
- Wnt/PCP, Wnt/planar cell polarity
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Affiliation(s)
- Harunur Rashid
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Haiyan Chen
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Amjad Javed
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, USA
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Rashid H, Meijer JM, Bolling MC, Horváth B. Clinical response to rituximab and improvement in quality of life in patients with bullous pemphigoid and mucous membrane pemphigoid. Br J Dermatol 2021; 186:721-723. [PMID: 34747507 PMCID: PMC9302996 DOI: 10.1111/bjd.20881] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 11/01/2021] [Accepted: 11/07/2021] [Indexed: 11/28/2022]
Affiliation(s)
- H Rashid
- Department of Dermatology, Center of Blistering Diseases, European Reference Network-Skin Member, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - J M Meijer
- Department of Dermatology, Center of Blistering Diseases, European Reference Network-Skin Member, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - M C Bolling
- Department of Dermatology, Center of Blistering Diseases, European Reference Network-Skin Member, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - B Horváth
- Department of Dermatology, Center of Blistering Diseases, European Reference Network-Skin Member, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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Rashid H, Ramnarain J, Nasis A, Nicholls SJ, Cameron JD, Gooley RP. Hypo-attenuated leaflet thickening is associated with structural valve deterioration following transcatheter aortic valve replacement. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1598] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
While hypo-attenuated leaflet thickening (HALT) has been extensively described following transcatheter aortic valve replacement (TAVR), it remains unclear if HALT impacts long-term prosthetic haemodynamics or predicts structural valve deterioration (SVD).
Purpose
To determine the role of HALT and its characteristics of depth and thickness in predicting SVD.
Methods
We prospectively evaluated 186 patients who had undergone TAVR with 320-slice CT imaging for the presence of HALT, defined as hypo-attenuation of bioprosthetic leaflets in diastole. All assessments were performed by two blinded operators on the 3Mensio workstation. HALT depth (thickness) was the greatest depth in the sagittal view and HALT area was the greatest area in the axial view. SVD was defined as at least one of mean gradient ≥20 mmHg, increase in gradient ≥10 mmHg from baseline and at least moderate valvular regurgitation. Echocardiograms at discharge, one month and annually were assessed by cardiologists blinded to HALT status.
Results
LT prevalence was 17.7% at a median CT scan of 6 weeks. SVD occurred in 8.6% at a median follow-up of 2 years (IQR 1–3); two required valve re-intervention, five required anticoagulation that reversed moderate-severe gradient and nine had mild-moderate gradients that were closely monitored. Patients with HALT were more likely to develop SVD (39.3% vs 1.9%, p<0.01) and higher trans-valvular gradients throughout follow-up at up to 3-year follow-up. HALT affected one leaflet in 17 cases, two leaflets in 13 cases and three leaflets in 3 cases. Patients with HALT had a median cumulative thickness of 2.9 mm (IQR 1.9–4.7) and a median area of 64.2 mm2 (IQR 40.9–91.6). Threshold for the occurrence of SVD with HALT characteristics were cumulative depth of 2.4 mm (Specificity 94.1%, Sensitivity 75.0%, AUC=0.87) and cumulative area of 28 mm2 (Specificity 92.2%, Sensitivity 81.3%, AUC=0.86).
Conclusion
HALT was associated with SVD and higher trans-valvular gradients following TAVR. HALT depth and area were strong predictors of SVD. CT following TAVR may determine patients at-risk of SVD.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): National Heart Foundation AustraliaNational Health and Medical Research Council Australia
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Affiliation(s)
- H Rashid
- Monash Health, Monash Heart, Melbourne, Australia
| | - J Ramnarain
- Monash Health, Monash Heart, Melbourne, Australia
| | - A Nasis
- Monash Health, Monash Heart, Melbourne, Australia
| | - S J Nicholls
- Monash Health, Monash Heart, Melbourne, Australia
| | - J D Cameron
- Monash Health, Monash Heart, Melbourne, Australia
| | - R P Gooley
- Monash Health, Monash Heart, Melbourne, Australia
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20
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Rashid H, Gala T, Ain Q, Ashraf H, Vesamia S, Vig S. 1358 Does A COVID Protected Hospital Within A COVID Hospital Enable Elective Care and Training Opportunities? Br J Surg 2021. [PMCID: PMC8524575 DOI: 10.1093/bjs/znab259.502] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Introduction Elective care in the UK came to a standstill with the advent of the COVID-19 pandemic. A restart could only be enabled with ‘green site’ separation and a ‘covid protected’ zone. A ‘hospital within the hospital’ concept was developed including 9 elective theatres, 28 ring fenced elective beds, a surgical enhanced care unit, a canteen, and a separated entrance. This model was underpinned with PPE, enhanced infection control and guidance for staff. The study documented the ability to recover elective activity and therefore provide a training environment for surgical trainees. Method Data was collected weekly (7/20 to 1/21) through the business informatics system with regard to theatres cases completed compared to the activity achieved in the 11-theatre elective estate pre COVID-19. Results Pre COVID-19, an average of 263 cases were completed per week. In the first week of operation, 31% of theatre capacity was achieved. By week 7, 106% of pre COVID was recorded and 130% by week 11. This was maintained until the impact of the second wave where activity has reduced to 50% but is not anticipated to reduce further as local anaesthetic and blocks maybe utilised. Conclusions This ‘hospital within the hospital’ has enabled elective care to return to above normal levels, with increased efficiencies. This has enabled a rapid return to a training environment for trainees disheartened with deployment to critical care in the first wave.
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Affiliation(s)
- H Rashid
- Croydon University Hospital, London, United Kingdom
| | - T Gala
- Croydon University Hospital, London, United Kingdom
| | - Q Ain
- Croydon University Hospital, London, United Kingdom
| | - H Ashraf
- Croydon University Hospital, London, United Kingdom
| | - S Vesamia
- Croydon University Hospital, London, United Kingdom
| | - S Vig
- Croydon University Hospital, London, United Kingdom
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21
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Schmidt E, Rashid H, Marzano A, Lamberts A, Di Zenzo G, Diercks G, Alberti‐Violetti S, Barry R, Borradori L, Caproni M, Carey B, Carrozzo M, Cianchini G, Corrà A, Dikkers F, Feliciani C, Geerling G, Genovese G, Hertl M, Joly P, Meijer J, Mercadante V, Murrell D, Ormond M, Pas H, Patsatsi A, Rauz S, van Rhijn B, Roth M, Setterfield J, Zillikens D, C.Prost, Zambruno G, Horváth B, Caux F. European Guidelines (S3) on diagnosis and management of mucous membrane pemphigoid, initiated by the European Academy of Dermatology and Venereology - Part II. J Eur Acad Dermatol Venereol 2021; 35:1926-1948. [PMID: 34309078 PMCID: PMC8518905 DOI: 10.1111/jdv.17395] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 03/24/2021] [Indexed: 01/21/2023]
Abstract
This guideline has been initiated by the task force Autoimmune Blistering Diseases of the European Academy of Dermatology and Venereology, including physicians from all relevant disciplines and patient organizations. It is a S3 consensus-based guideline that systematically reviewed the literature on mucous membrane pemphigoid (MMP) in the MEDLINE and EMBASE databases until June 2019, with no limitations on language. While the first part of this guideline addressed methodology, as well as epidemiology, terminology, aetiology, clinical presentation and outcome measures in MMP, the second part presents the diagnostics and management of MMP. MMP should be suspected in cases with predominant mucosal lesions. Direct immunofluorescence microscopy to detect tissue-bound IgG, IgA and/or complement C3, combined with serological testing for circulating autoantibodies are recommended. In most patients, serum autoantibodies are present only in low levels and in variable proportions, depending on the clinical sites involved. Circulating autoantibodies are determined by indirect IF assays using tissue substrates, or ELISA using different recombinant forms of the target antigens or immunoblotting using different substrates. The major target antigen in MMP is type XVII collagen (BP180), although in 10-25% of patients laminin 332 is recognized. In 25-30% of MMP patients with anti-laminin 332 reactivity, malignancies have been associated. As first-line treatment of mild/moderate MMP, dapsone, methotrexate or tetracyclines and/or topical corticosteroids are recommended. For severe MMP, dapsone and oral or intravenous cyclophosphamide and/or oral corticosteroids are recommended as first-line regimens. Additional recommendations are given, tailored to treatment of single-site MMP such as oral, ocular, laryngeal, oesophageal and genital MMP, as well as the diagnosis of ocular MMP. Treatment recommendations are limited by the complete lack of high-quality randomized controlled trials.
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22
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Shahzad MM, Butt W, Hussain Z, Rehman RA, Khan MKA, Hussain M, Noureen A, Bashir S, Tariq M, Rafique MT, Khalid F, Rashid H, Akhtar K, Tahir L. Use of multi-strain probiotics in linseed meal based diet for Labeo rohita fingerlings. BRAZ J BIOL 2021; 83:e246727. [PMID: 34468521 DOI: 10.1590/1519-6984.246727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/01/2021] [Indexed: 11/22/2022] Open
Abstract
Unavailability of probiotics in fish digestive system fingerlings is unable to digest and absorb their food properly. The current research was conducted to investigate the influence of probiotics added Linseed meal based (LMB) diet on hematology and carcass composition of Labeo rohita juveniles. Hematological parameters are essential diagnostics used to estimate the health status of fish. The usage of probiotics for fish health improvement is becoming common due to the higher demand for environment-friendly culture system in water. Linseed meal was used as a test ingredient to prepare six experimental test diets by adding probiotics (0, 1, 2, 3, 4 and 5 g/kg) and 1% indigestible chromic oxide for seventy days. According to their live wet weight, five percent feed was given to fingerlings twice a day. Fish blood and carcass samples (Whole body) were taken for hematological and carcass analysis at the end of the experiment. The highest carcass composition (crude protein; 18.72%, crude fat; 8.80% and gross energy; 2.31 kcal/g) was observed in fish fed with test diet II supplemented with probiotics (2 g/kg). Moreover, maximum RBCs number (2.62× 106mm-3), WBCs (7.84×103mm-3), PCV (24.61), platelets (63.85) and hemoglobin (7.87) had also been reported in the fish fingerlings fed on 2 g/kg of probiotics supplemented diet. Results indicated that probiotics supplementation has a critical role in improvement of fingerlings' body composition and hematological indices. Present findings showed that probiotics supplementation at 2 g/kg level in linseed by-product-based diet was very useful for enhancing the overall performance of L. rohita fingerlings.
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Affiliation(s)
- M M Shahzad
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - W Butt
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - Z Hussain
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - R A Rehman
- University of Health Sciences Lahore, Department of Forensic Sciences, Lahore, Pakistan
| | - M K A Khan
- University of Okara, Department of Zoology, Okara, Pakistan
| | - M Hussain
- University of Lahore, Institute of Molecular Biology and Biotechnology, Lahore, Pakistan
| | - A Noureen
- University of Lahore, Institute of Molecular Biology and Biotechnology, Lahore, Pakistan
| | - S Bashir
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - M Tariq
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - M T Rafique
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - F Khalid
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - H Rashid
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - K Akhtar
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
| | - L Tahir
- University of Education, Division of Science and Technology, Department of Zoology, Lahore, Pakistan
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23
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Rashid H, Lamberts A, Borradori L, Alberti‐Violetti S, Barry R, Caproni M, Carey B, Carrozzo M, Caux F, Cianchini G, Corrà A, Diercks G, Dikkers F, Di Zenzo G, Feliciani C, Geerling G, Genovese G, Hertl M, Joly P, Marzano A, Meijer J, Mercadante V, Murrell D, Ormond M, Pas H, Patsatsi A, Prost C, Rauz S, van Rhijn B, Roth M, Schmidt E, Setterfield J, Zambruno G, Zillikens D, Horváth B. European guidelines (S3) on diagnosis and management of mucous membrane pemphigoid, initiated by the European Academy of Dermatology and Venereology - Part I. J Eur Acad Dermatol Venereol 2021; 35:1750-1764. [PMID: 34245180 PMCID: PMC8457055 DOI: 10.1111/jdv.17397] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 05/17/2021] [Indexed: 12/15/2022]
Abstract
This guideline on mucous membrane pemphigoid (MMP) has been elaborated by the Task Force for Autoimmune Blistering Diseases of the European Academy of Dermatology and Venereology (EADV) with a contribution of physicians from all relevant disciplines and patient organizations. It is a S3 consensus-based guideline encompassing a systematic review of the literature until June 2019 in the MEDLINE and EMBASE databases. This first part covers methodology, the clinical definition of MMP, epidemiology, MMP subtypes, immunopathological characteristics, disease assessment and outcome scores. MMP describes a group of autoimmune skin and mucous membrane blistering diseases, characterized by a chronic course and by predominant involvement of the mucous membranes, such as the oral, ocular, nasal, nasopharyngeal, anogenital, laryngeal and oesophageal mucosa. MMP patients may present with mono- or multisite involvement. Patients' autoantibodies have been shown to be predominantly directed against BP180 (also called BPAG2, type XVII collagen), BP230, laminin 332 and type VII collagen, components of junctional adhesion complexes promoting epithelial stromal attachment in stratified epithelia. Various disease assessment scores are available, including the Mucous Membrane Pemphigoid Disease Area Index (MMPDAI), the Autoimmune Bullous Skin disorder Intensity Score (ABSIS), the 'Cicatrising Conjunctivitis Assessment Tool' and the Oral Disease Severity Score (ODSS). Patient-reported outcome measurements (PROMs), including DLQI, ABQOL and TABQOL, can be used for assessment of quality of life to evaluate the effectiveness of therapeutic interventions and monitor disease course.
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Rashid H, Ramnarain J, Nicholls S, Nasis A, Cameron J, Gooley R. Ct-defined Leaflet Thrombosis (LT) Predicts Structural Valve Deterioration (SVD) Following TAVR. J Cardiovasc Comput Tomogr 2021. [DOI: 10.1016/j.jcct.2021.06.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Vermeer HAB, Rashid H, Esajas MD, Oldhoff JM, Horváth B. The use of hydroxychloroquine as a systemic treatment in erosive lichen planus of the vulva and vagina. Br J Dermatol 2021; 185:201-203. [PMID: 33548058 PMCID: PMC8360049 DOI: 10.1111/bjd.19870] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 11/30/2022]
Affiliation(s)
- H A B Vermeer
- Department of Dermatology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - H Rashid
- Department of Dermatology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - M D Esajas
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - J M Oldhoff
- Department of Dermatology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
| | - B Horváth
- Department of Dermatology, University Medical Centre Groningen, University of Groningen, Groningen, the Netherlands
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Ramnarain J, Rashid H, Dowling C, Ramzy J, Gooley R. Determinants of Abnormal Activated Clotting Time in Cardiac Catheterisation. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.275] [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: 11/16/2022]
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27
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Rashid H, Ramnarain J, Nicholls S, Nasis A, Cameron J, Gooley R. Hypo-Attenuated Leaflet Thickening (HALT) is Associated With Structural Valve Deterioration (SVD) Following Transcatheter Aortic Valve Replacement (TAVR). Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Lodh D, Awual SMA, Mondol MTI, Islam MS, Islam MN, Rashid H. A Comparative Study of Coblation versus Dissection Tonsillectomy. Bangladesh J of Otorhinolaryngology 2020. [DOI: 10.3329/bjo.v26i2.50613] [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: 11/05/2022]
Abstract
Objectives: To compare the efficacy of coblation tonsillectomy and dissection tonsillectomy regarding the duration of surgery, amount of intraoperative bleeding, postoperative pain, recovery time and complications.
Methods: 50 patients aged 5-30 years with chronic tonsillitis who underwent tonsillectomy operation were randomly divided into two groups. One group underwent coblation tonsillectomy while other group with dissection tonsillectomy. Chronic tonsillitis patients with adenoid hypertrophy and Otitis media with effusion were excluded by diagnostic nasal endoscopy, imaging and audiometry. All patient were examined regularly after surgery for 10 days to assess the postoperative morbidity and efficacy of both coblation and dissection methods. Duration of surgery, amount of intraoperative bleeding, recovery time, postoperative pain& requirement of analgesics, time required to regain normal diet & activityand complication were assessed.
Result: Comparing the coblation tonsillectomy to cold dissection group the mean duration of surgery was 9.7 versus 18.4 minutes, the amount of intra operative bleeding 10.62 versus 28.72 milliliter. The difference on the postoperative pain scale, requirement of analgesics, condition of the tonsillar fossa, time required to regain normal diet & activity between two groups were statistically significant.
Conclusion: In our study patient underwent coblation tonsillectomy providing a near bloodless field, minimum operating time, less postoperative pain, quicker return to normal diet, normal activity and less use of analgesics than patients underwent dissection tonsillectomy. Postoperative morbidity and complications were lower as compared to conventional cold dissection technique.
Bangladesh J Otorhinolaryngol; October 2020; 26(2): 121-127
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Rashid H, Michail M, Khav N, Tan S, Nasis A, Cameron J, Nicholls S, Gooley R. Association between prosthesis geometry and leaflet thrombosis following transcatheter aortic valve replacement. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1929] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Leaflet thrombosis (LT) following transcatheter aortic valve replacement (TAVR) is a recognised condition. The association between prosthesis geometry [expansion, implant depth and commissural alignment (CA)] and LT is unclear.
Methods
Patients that received intra-annular TAVR prosthesis and post-procedure computed tomography (CT) with a 320-slice scanner were included. LT, defined as at least 50% restricted leaflet motion, was assessed with a dedicated 3Mensio workstation by two experienced CT readers. Prosthesis expansion was defined as actual divided by expected prosthesis area as a percentage of expected area whilst eccentricity was [(maximum diameter − minimum diameter) / maximum diameter) × 100%], both measured at prosthesis inflow, annulus and outflow. Implant depth was the average distance between prosthesis inflow and nadir of each cusp. CA was the average angle between each native and prosthesis leaflet coaptations. Significant commissural misalignment (CMA) was defined as CA greater than 30 degrees. To exclude anticoagulation bias, similar analysis was also performed in the cohort of non-anticoagulated patients.
Results
117 patients were included; the prevalence of LT was 13.7% [13/93 cases (14.0%) of Lotus valves and 3/24 cases (12.5%) of Sapien 3 valves]. Baseline demographics (age, STS score, cardiac risk factors) and procedural characteristics (access site, post-dilation, repositioning) were similar in both groups. None of the patients with LT were discharged on anticoagulation therapy (0.0% vs 22.8%, p<0.01). There were no differences in actual prosthesis area, perimeter or eccentricity at the three prosthesis levels. Patients with LT had reduced annulus expansion (89.3±9.8% vs 94.6±8.3%, p=0.02), lower implant depth (6.9±1.5mm vs 4.9±1.5mm, p<0.01) and more significant CMA (81.3% vs 48.5%, p=0.02). These findings were similar in patients that were not anticoagulated (94/117 patients).
Conclusion
Patients with LT had reduced annulus expansion, lower implant depth and greater CMA. These findings were not affected by presence or absence of anticoagulation. These factors may be important considerations during procedural planning for TAVR.
Graphical abstract
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): National Health and Medical Research Council (NHMRC). National Heart Foundation (NHF) Australia.
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Affiliation(s)
- H Rashid
- Monash Health, Monash Heart, Melbourne, Australia
| | - M Michail
- Monash Health, Monash Heart, Melbourne, Australia
| | - N Khav
- Monash Health, Monash Heart, Melbourne, Australia
| | - S Tan
- Monash Health, Monash Heart, Melbourne, Australia
| | - A Nasis
- Monash Health, Monash Heart, Melbourne, Australia
| | - J Cameron
- Monash Health, Monash Heart, Melbourne, Australia
| | - S Nicholls
- Monash Health, Monash Heart, Melbourne, Australia
| | - R Gooley
- Monash Health, Monash Heart, Melbourne, Australia
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Rashid H, Samadfam R. 580 Validation of an atopic dermatitis model in mice by repeated intra-dermal challenges with ovalbumin. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.590] [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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Rashid H, Michail M, Khav N, Tan S, Tan S, Nasis A, Cameron J, Nicholls S, Gooley R. Association Between Prosthesis Geometry And Leaflet Thrombosis Following Transcatheter Aortic Valve Replacement On Assessment With 320-slice Scanner Ct. [for Consideration Of Soar Award]. J Cardiovasc Comput Tomogr 2020. [DOI: 10.1016/j.jcct.2020.06.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Khass M, Rashid H, Burrows PD, Bridges LS, Javed A, Schroeder H. Early B cell protein λ5 affects skeletal homeostasis. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.62.2] [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: 01/02/2023]
Abstract
Abstract
There are strong indications that B lineage cells play a key role in bone homeostasis. The preB cell receptor is composed of an immunoglobulin mu H chain, VpreB and immunoglobulin λ5. Young λ5 deficient mice have reduced numbers of preB cells and mature B cells, moreover; their bone appears to be normal. With time, they achieve normal numbers of mature B cells while exhibiting major bone loss. To test whether expression of λ5 is playing a critical role maintaining bone homeostasis, we evaluated bone in: mice lacking immunoglobulin JH (JH −/− λ5+/+). These mice lack both preB and mature B cells, but maintain expression of λ5 in progenitor B cells. Mice deficient in both JH and λ5 (JH −/− λ5−/−) have no preB or mature B cells, and also no λ5. Using both μCT and histologic evaluation, we compared femur and skull at six months of age in these three mutant strains to normal controls. JH −/− λ5+/+ femur and skull were similar to WT. Both JH +/+λ5−/− and JH −/− λ5−/− mice showed significant decrease in femoral trabecular bone and increased loss of skull bone. Irradiated WT mice transplanted with JH −/− λ5−/− bone marrow cells developed defective femoral and cranial bones. In contrast, JH −/−λ5−/− mice that received WT bone marrow cells recovered bone architecture. In vitro culture of bone progenitors from JH +/+λ5−/− and JH −/− λ5−/− mice showed decreased ability of bone formation. These data underscore the importance of immunoglobulin λ5 in skeletal development.
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Kopprio GA, Neogi SB, Rashid H, Alonso C, Yamasaki S, Koch BP, Gärdes A, Lara RJ. Vibrio and Bacterial Communities Across a Pollution Gradient in the Bay of Bengal: Unraveling Their Biogeochemical Drivers. Front Microbiol 2020; 11:594. [PMID: 32351470 PMCID: PMC7174592 DOI: 10.3389/fmicb.2020.00594] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 12/03/2019] [Accepted: 03/18/2020] [Indexed: 01/23/2023] Open
Abstract
The highly populated coasts of the Bay of Bengal are particularly vulnerable to water-borne diseases, pollution and climatic extremes. The environmental factors behind bacterial community composition and Vibrio distribution were investigated in an estuarine system of a cholera-endemic region in the coastline of Bangladesh. Higher temperatures and sewage pollution were important drivers of the abundance of toxigenic Vibrio cholerae. A closer relation between non-culturable Vibrio and particulate organic matter (POM) was inferred during the post-monsoon. The distribution of operational taxonomic units (OTUs) of Vibrio genus was likely driven by salinity and temperature. The resuspension of sediments increased Vibrio abundance and organic nutrient concentrations. The δ13C dynamic in POM followed an increasing gradient from freshwater to marine stations; nevertheless, it was not a marker of sewage pollution. Bacteroidales and culturable coliforms were reliable indicators of untreated wastewater during pre and post-monsoon seasons. The presumptive incorporation of depleted-ammonium derived from ammonification processes under the hypoxic conditions, by some microorganisms such as Cloacibacterium and particularly by Arcobacter nearby the sewage discharge, contributed to the drastic 15N depletion in the POM. The likely capacity of extracellular polymeric substances production of these taxa may facilitate the colonization of POM from anthropogenic origin and may signify important properties for wastewater bioremediation. Genera of potential pathogens other than Vibrio associated with sewage pollution were Acinetobacter, Aeromonas, Arcobacter, and Bergeyella. The changing environmental conditions of the estuary favored the abundance of early colonizers and the island biogeography theory explained the distribution of some bacterial groups. This multidisciplinary study evidenced clearly the eutrophic conditions of the Karnaphuli estuary and assessed comprehensively its current bacterial baseline and potential risks. The prevailing conditions together with human overpopulation and frequent natural disasters, transform the region in one of the most vulnerable to climate change. Adaptive management strategies are urgently needed to enhance ecosystem health.
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Affiliation(s)
- Germán A Kopprio
- Department of Chemical Analytics and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany.,Tropical Marine Microbiology, Leibniz Centre for Tropical Marine Research, Bremen, Germany.,Marine Biogeochemistry, Instituto Argentino de Oceanografía, Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - Sucharit B Neogi
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
| | - Harunur Rashid
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Cecilia Alonso
- Microbial Ecology of Aquatic Systems, Centro Universitario Región Este, Universidad de la República, Rocha, Uruguay
| | - Shinji Yamasaki
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Japan
| | - Boris P Koch
- Ecological Chemistry, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Astrid Gärdes
- Tropical Marine Microbiology, Leibniz Centre for Tropical Marine Research, Bremen, Germany
| | - Rubén J Lara
- Marine Biogeochemistry, Instituto Argentino de Oceanografía, Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Sur, Bahía Blanca, Argentina
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Shahjahan M, Al-Emran M, Majharul Islam SM, Abdul Baten SM, Rashid H, Mahfuzul Haque M. Prolonged photoperiod inhibits growth and reproductive functions of rohu Labeo rohita. Aquaculture Reports 2020; 16:100272. [DOI: 10.1016/j.aqrep.2019.100272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Thakur U, Michail M, Comella A, Tan S, Lim R, Gupta V, Rashid H, Brown A. 831 Functionally Significant Coronary Artery Disease in Patients Undergoing Transcatheter Aortic Valve Implantation is Associated With Increased Mortality. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.838] [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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36
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Rashid H, Michail M, Khav N, Tan S, Amiruddin A, Nasis A, Cameron J, Nicholls S, Gooley R. 427 Utilisation of 320-slice Computed Tomography (CT) to Determine Association Between Prosthesis Geometry and Leaflet Thrombosis (LT) following Transcatheter Aortic Valve Replacement (TAVR). Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.434] [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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Rashid H, Michail M, Ihdayhid A, Khav N, Tan S, Nasis A, Nicholls S, Cameron J, Gooley R. 012 Clinical Predictors and Sequalae of Computed Tomography (CT) Defined Leaflet Thrombosis (LT) Following Transcatheter Aortic Valve Replacement (TAVR) at Medium-Term Follow-Up. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.019] [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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Groschel K, Richards T, Weimar C, Neugebauer R, Poli S, Weissenborn K, Imray C, Michalski D, Rashid H, Loftus I, Ritter M, Hauser TK, Muench G, Poppert H. 251Revacept, an inhibitor of platelet adhesion in symptomatic carotid stenosis: Results from a phase II study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Revacept is a novel lesion-specific inhibitor for platelet adhesion and thrombus formation. The biological drug is based on the platelet GPVI receptor and prevents collagen-mediated platelet activation from the atherosclerotic plaque. The unique characteristic of Revacept is the specific inhibition of plaque-mediated thrombus formation without alteration of hemostasis.
To test this concept in patients with plaque-mediated thrombosis we investigated patients with symptomatic carotid artery stenosis (at least 50% cf. ECST) with a recent ischemic cerebral stroke or transient ischemic attack (TIA). 150 patients were evenly randomized in blinded fashion to receive placebo, 40mg or 120 mg Revacept by IV infusion. To investigate anti-thrombotic efficacy, we assessed microemboli in the middle cerebral artery by transcranial Doppler (MES) and micro-infarctions in the brain by diffusion-weighted nuclear magnetic resonance (DWI-NMR) imaging. Ischemic complications such as myocardial infarctions and ischemic stroke were clinically followed up to 3 and 12 months. Bleeding complications were thoroughly monitored according to the RE-LY study group criteria. All patients were on standard anti-platelet therapy and underwent guideline conform treatment with carotid endarterectomy (CEA),carotid artery stent implantation or intensified conservative treatment.
The study was conducted in 16 centers in Germany and the UK from May 2013 to September 2018. Due to lost to follow-up investigations the planned patient numbers were slightly exceeded to 158 patients, who were finally included in the study according to intention to treat. Currently data clearance and detailed analysis of unblinded data is going on. 7.6% of patients underwent carotid artery stenting, 11.4% were under intensified conservative treatment and 81.0% were surgically treated with CEA. The safety data of the overall 158 patients which was closely monitored by an independent data safety board are available. In the overall study population (before unblinding for treatment) ischemic strokes and myocardial infarctions were numerically lower compared to previous studies with symptomatic carotid stenosis patients undergoing CEA or stenting (meta analysis from the EVA-3S, SPACE and ICSS study). Despite comparable basal anti-thrombotic therapy addition of Revacept did not increase bleeding complications in the overall study population.
The Revacept CS02 study has successfully achieved the aimed patient recruitment. Safety analysis shows a favorable profile. Bleeding complications in these high-risk patients with recent ischemic stroke were not increased compared to historic data from similar control patients. There is a trend for increased anti-thrombotic and anti-ischemic potency with regard to clinical events. Final data will be presented at the congress.
Acknowledgement/Funding
None
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Affiliation(s)
- K Groschel
- University Medicine, Neurology, Mainz, Germany
| | - T Richards
- The University of Western Australia, Vascular Surgery, Perth, Australia
| | - C Weimar
- University of Duisburg-Essen Medical School, Neurology, Essen, Germany
| | | | - S Poli
- University Hospital Tübingen, Neurology and Hertie Institute for Clinical Brain Reserarch, Tübingen, Germany
| | | | - C Imray
- University Hospitals of Coventry and Warwickshire NHS Trust, Vascular Surgery, Coventry, United Kingdom
| | - D Michalski
- Leipzig University Hospital, Neurology, Leipzig, Germany
| | - H Rashid
- Kings College Hospital, Vascular Surgery, London, United Kingdom
| | - I Loftus
- St George's Healthcare NHS Trust, Vascular Surgery, London, United Kingdom
| | - M Ritter
- University Medical Center, Neurology, Münster, Germany
| | - T.-K Hauser
- University Hospital Tübingen, Neuroradiology, Tübingen, Germany
| | - G Muench
- advanceCOR, Martinsried, Germany
| | - H Poppert
- Technical University of Munich, Neurology, Munich, Germany
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Khass M, Rashid H, Burrows PD, Bridges SL, Javed A, Schroeder HW. Disruption of the preB Cell Receptor Complex Leads to Decreased Bone Mass. Front Immunol 2019; 10:2063. [PMID: 31552025 PMCID: PMC6736987 DOI: 10.3389/fimmu.2019.02063] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/15/2019] [Indexed: 11/24/2022] Open
Abstract
In the bone marrow, preB cells are found adjacent to the bone endosteum where bone synthesizing osteoblast and bone resorbing osteoclasts reside. Although there is evidence of interactions between preB and bone cells, the factors that contribute to such interactions are poorly understood. A critical checkpoint for preB cell development assesses the integrity of the nascent immunoglobulin μ heavy chain (HC) by testing whether it can participate in the formation of a preB cell receptor (preBCR), composed of the μ HC and surrogate light chain (LC). In this work, we tested whether loss of preBCR components can affect bone synthesis. A panel of gene targeted mice with sequential blocks in preBCR formation or function [surrogate light chain component lambda 5 deleted (λ5−/−), transmembrane domain of μHC deleted (IgM-mem−/−), and CD19 preBCR co-receptor deleted (CD19−/−)] were evaluated for effects on postnatal bone synthesis. Postnatal bone mass was analyzed in 6 month old mice using μ-CT, histomorphometry and double calcein labeling. Both cortical and trabecular bone mass were significantly decreased in the femurs of the λ5 and IgM-mem deficient mice. Histomorphometric analysis showed a decrease in the numbers of osteoblasts and osteoclasts in all three mutant strains. Double calcein labeling revealed a significant decrease in dynamic synthesis and mineralization of bone in λ5−/− mice. Our data strongly suggest that interference with preBCR formation or function affects bone homeostasis independent of the presence or absence of mature B cells, and that components of the preBCR play important, and potentially distinct, roles in regulating adult bone mass.
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Affiliation(s)
- Mohamed Khass
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States.,Genetic Engineering and Biotechnology Division, National Research Center, Cairo, Egypt
| | - Harunur Rashid
- Department of Oral and Maxillofacial Surgery, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Peter D Burrows
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - S Louis Bridges
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Amjad Javed
- Department of Oral and Maxillofacial Surgery, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Harry W Schroeder
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States.,Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
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Rashid H, Lamberts A, van Maanen D, Pas H, Jonkman M, Horvath B. 095 Daily practice of rituximab treatment for pemphigus: a retrospective study of 65 patients. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.099] [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: 11/29/2022]
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41
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Lamberts A, Rashid H, Pas HH, Diercks GFH, Meijer JM, Horváth B. Pemphigoid variants affecting the skin. Clin Exp Dermatol 2019; 44:721-727. [PMID: 31099084 DOI: 10.1111/ced.13984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2019] [Indexed: 11/29/2022]
Abstract
Pemphigoid diseases are autoimmune subepidermal blistering diseases affecting the skin and mucous membranes, which are caused by autoantibodies targeting structural hemidesmosomal proteins or hemidesmosome-associated proteins. Variants of pemphigoid can be differentiated based on targeted antigens and clinical aspects. In this review, we will discuss pemphigoid variants that predominantly affect the skin, and provide clinicians with clues to diagnosis.
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Affiliation(s)
- A Lamberts
- Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - H Rashid
- Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - H H Pas
- Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - G F H Diercks
- Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Department of Pathology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - J M Meijer
- Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - B Horváth
- Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
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Sumon KA, Yesmin MF, Van den Brink PJ, Bosma RH, Peeters ETHM, Rashid H. Effects of long-term chlorpyrifos exposure on mortality and reproductive tissues of Banded Gourami ( Trichogaster fasciata). J Environ Sci Health B 2019; 54:549-559. [PMID: 31094287 DOI: 10.1080/03601234.2019.1614399] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 06/09/2023]
Abstract
This study assessed the long-term toxicity of chlorpyrifos on survival and reproduction of Banded Gourami by using mortality, gonado-somatic index (GSI) and histopathological observations as endpoints. Adult fish were exposed to five different concentrations of chlorpyrifos (0, 15, 50, 150, 500 µg/L) in 15 PVC tanks for 15, 30, 45, 60 and 75 days. Results showed that all male and female fish died after 15 days of 500 µg/L chlorpyrifos exposure. No consistent significant effect was observed for both male and female GSI. Furthermore, results showed dose- and time-dependent histopathological alterations for both ovary and testes. The 60-d No Observed Effect Concentration (NOEC) for most histopathological alterations of Banded Gourami ovary and testes was 50 μg/L, while 60-d NOEC for mortality of both male and female fish was < 15 μg/L. The results show that the long-term exposure to chlorpyrifos not only affect the reproductive tissues of Banded Gourami at exposure concentrations but also cause their mortality. Future studies should evaluate effects at lower concentrations.
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Affiliation(s)
- Kizar Ahmed Sumon
- a Aquatic Ecology and Water Quality Management Group , Wageningen University , Wageningen , The Netherlands
- b Department of Fisheries Management , Bangladesh Agricultural University , Mymensingh , Bangladesh
| | - Most Farzana Yesmin
- b Department of Fisheries Management , Bangladesh Agricultural University , Mymensingh , Bangladesh
| | - Paul J Van den Brink
- a Aquatic Ecology and Water Quality Management Group , Wageningen University , Wageningen , The Netherlands
- c Wageningen Environmental Research (Alterra) , Wageningen , The Netherlands
| | - Roel H Bosma
- d Aquaculture and Fisheries Group , Wageningen University , Wageningen , The Netherlands
| | - Edwin T H M Peeters
- a Aquatic Ecology and Water Quality Management Group , Wageningen University , Wageningen , The Netherlands
| | - Harunur Rashid
- b Department of Fisheries Management , Bangladesh Agricultural University , Mymensingh , Bangladesh
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Yuvaraj J, Lin A, Rashid H, Nerlekar N, Cameron J, Seneviratne S, Nicholls S, Psaltis P, Wong D. Is Spontaneous Coronary Artery Dissection (SCAD) Related to Vascular Inflammation and Epicardial Fat? Insights from Novel Markers of Computed Tomography Coronary Angiography. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.285] [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: 11/26/2022]
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Hasan O, Fahad S, Sattar S, Umer M, Rashid H. Ankle Arthrodesis using Ilizarov Ring Fixator: A Primary or Salvage Procedure? An Analysis of Twenty Cases. Malays Orthop J 2018; 12:24-30. [PMID: 30555643 PMCID: PMC6287131 DOI: 10.5704/moj.1811.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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] [Indexed: 11/14/2022] Open
Abstract
Introduction: Ankle arthrodesis using the Ilizarov technique provides high union rate with the added benefits of early weight-bearing, and the unique advantage of its ability to promote regeneration of soft tissue around the bone, including skin, muscle and neuro-vascular structures, and its versatility to allow correction of the position of the foot by adjusting the frame post-operatively as needed. We describe our experience with this technique and the functional outcomes in our patients. Materials and Methods: This retrospective study was conducted in 20 ankle fusion cases using the Ilizarov method between the years 2007 and 2017. We defined success in treatment by loss of preoperative symptoms and radiological union on plain radiographs of the ankle. Results: Fusion was achieved in all patients (100%). Immediate post-operative ambulation was with full weight bearing (FWB) in 16 (83%) of the participants and non-weight bearing (NWB) in 3 patients (17%). Post-procedure 11 patients (67%) of the participants who were full weight bearing required some form of support for walking for 2-3 weeks. Post-operatively three patients had pin tract infection requiring intravenous antibiotics. Radiological union took range of 6-12 weeks, mean union time was 8 weeks. Only one patient required bone grafting due to bone loss. Average follow-up period was 10-45 months. Conclusion: The Ilizarov technique has a high union rate and leads to general favourable clinical outcome and may be considered for any ankle arthrodesis but is especially useful in complex cases such as for revisions, soft-tissue compromise, infection and in patients with risk for non-union. Early weight bearing is an extra benefit.
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Affiliation(s)
- O Hasan
- Section of Orthopaedics, Aga Khan University Hospital, Karachi, Pakistan
| | - S Fahad
- Section of Orthopaedics, Aga Khan University Hospital, Karachi, Pakistan
| | - S Sattar
- Section of Orthopaedics, Aga Khan University Hospital, Karachi, Pakistan
| | - M Umer
- Section of Orthopaedics, Aga Khan University Hospital, Karachi, Pakistan
| | - H Rashid
- Section of Orthopaedics, Aga Khan University Hospital, Karachi, Pakistan
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Alshehari AA, Park S, Rashid H. Strategies to improve hand hygiene compliance among healthcare workers in adult intensive care units: a mini systematic review. J Hosp Infect 2018; 100:152-158. [PMID: 29559231 DOI: 10.1016/j.jhin.2018.03.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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: 10/26/2017] [Accepted: 03/13/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND Hand hygiene compliance among healthcare workers (HCWs) in intensive care units (ICUs) is disconcertingly low. AIM To identify the effective intervention(s) for increasing HH compliance among HCWs in adult ICUs. METHODS Two major electronic databases, OVID Medline and CINAHL, were searched by using a combination of MeSH terms and text words (e.g. hand hygiene, hand washing, compliance, adher*, improve*, develop* and intensive care unit) for relevant articles. This was supplemented by Google Scholar and hand searching of included bibliographies. Data from identified articles were then abstracted, quality-assessed, and combined into a summary effect. FINDINGS Of 89 titles and abstracts that were identified, 14 articles were finally included. Overall study quality was good. However, variations in design, setting, sample size, and intervention(s) tested precluded a meta-analysis; hence a narrative synthesis was conducted. The interventions included education, observation, provision of supplies, improving access and directive support; tested singly or in combination; resulted in positive outcomes in all but one study. A combination of administrative support, 'supplies', education and training, reminders, surveillance, and performance feedback raised the compliance from a baseline of 51.5% to a record 80.1%; but no set of intervention(s) could improve the compliance to the desired near-100% level. CONCLUSION Available data suggest that multi-modal interventions are effective in raising the compliance to a 'plateau' level but not up to the desired standard. Methodologically appropriate trials of combined interventions could enhance the evidence about interventions to improve hand hygiene compliance among ICU staff.
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Affiliation(s)
| | - S Park
- School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
| | - H Rashid
- National Centre for Immunisation Research and Surveillance of Vaccine Preventable Diseases (NCIRS), The Children's Hospital at Westmead, New South Wales, Australia; Marie Bashir Institute for Infectious Diseases and Biosecurity, School of Biological Sciences and Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia.
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Gifford K, McDuffie MJ, Rashid H, Knight E, Boudreaux M. Contraceptive method choice among Medicaid-enrolled women living in the same household. Contraception 2018. [DOI: 10.1016/j.contraception.2018.07.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sumon KA, Rashid H, Peeters ETHM, Bosma RH, Van den Brink PJ. Environmental monitoring and risk assessment of organophosphate pesticides in aquatic ecosystems of north-west Bangladesh. Chemosphere 2018; 206:92-100. [PMID: 29734095 DOI: 10.1016/j.chemosphere.2018.04.167] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [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: 02/22/2018] [Revised: 04/26/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
The use of organophosphate pesticides (OPPs) to protect a variety of crops has increased in Bangladesh. OPPs may contaminate surrounding aquatic environments through several routes including spray drift, surface runoff and groundwater leaching. Since it is unknown how much OPP end ups in aquatic environment in Bangladesh, the objectives of the present study were to quantify the residues of ten most commonly used OPPs in water and sediment of water bodies of north-west Bangladesh and to assess their ecological risks for aquatic organisms. The risks of the pesticides in surface water and sediment were assessed using a first-tier risk quotient (RQ) approach. The higher-tier PERPEST model was used to refine the ecological risks of pesticides when RQ indicated a potential risk. Results showed the most frequently detected pesticides that appeared in high concentrations were chlorpyrifos, diazinon and quinalphos in surface water and sediment. The highest concentration of OPPs measured in water was 9.1 μg chlorpyrifos/L (median of 1.95 μg/L), while this was 51 μg diazinon/kg dw (median of 11 μg/kg dw) for sediment. Furthermore, results showed high acute and/or chronic RQs (RQ > 1) in surface water and sediment for chlorpyrifos, diazinon, quinalphos, malathion and fenitrothion. The higher-tier PERPEST model confirmed risks of chlorpyrifos, diazinon, quinalphos and fenitrothion for aquatic insects, micro- and macro-crustaceans which were previously derived by RQ-based risk assessment for aquatic organisms. Furthermore, the results of the PERPEST model also indicated possible indirect effects of these pesticides on algae and macrophytes, community metabolism, rotifers and other macro-invertebrates.
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Affiliation(s)
- Kizar Ahmed Sumon
- Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands; Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
| | - Harunur Rashid
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; Science and Math Program, Asian University for Women, Chittagong-4000, Bangladesh
| | - Edwin T H M Peeters
- Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands
| | - Roel H Bosma
- Aquaculture and Fisheries Group, Wageningen University, P.O. Box 338, 6700 AH Wageningen, The Netherlands
| | - Paul J Van den Brink
- Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands; Wageningen Environmental Research, P.O. Box 47, 6700 AA Wageningen, The Netherlands
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Rashid H, Amiruddin A, Be KK, Nasis A, Gooley R, Cameron J, Brown A. 5251The prevalence of leaflet thrombosis in intra- versus supra-annular transcatheter aortic valve prostheses. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.5251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Rashid
- Monash Health, Monash Heart, Melbourne, Australia
| | - A Amiruddin
- Monash Health, Monash Heart, Melbourne, Australia
| | - K K Be
- Monash Health, Monash Heart, Melbourne, Australia
| | - A Nasis
- Monash Health, Monash Heart, Melbourne, Australia
| | - R Gooley
- Monash Health, Monash Heart, Melbourne, Australia
| | - J Cameron
- Monash Health, Monash Heart, Melbourne, Australia
| | - A Brown
- Monash Health, Monash Heart, Melbourne, Australia
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Rashid H, Gooley R, Nerlekar N, Ihdayhid AR, McCormick L, Be KK, Amiruddin A, Nasis A, Cameron J, Brown A. P6300Transcatheter and surgical aortic bioprosthetic valve leaflet thrombosis defined by computed tomography is associated with cerebrovascular events: contemporary meta-analysis of 8 observational studies. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Rashid
- Monash Health, Monash Heart, Melbourne, Australia
| | - R Gooley
- Monash Health, Monash Heart, Melbourne, Australia
| | - N Nerlekar
- Monash Health, Monash Heart, Melbourne, Australia
| | - A R Ihdayhid
- Monash Health, Monash Heart, Melbourne, Australia
| | - L McCormick
- Monash Health, Monash Heart, Melbourne, Australia
| | - K K Be
- Monash Health, Monash Heart, Melbourne, Australia
| | - A Amiruddin
- Monash Health, Monash Heart, Melbourne, Australia
| | - A Nasis
- Monash Health, Monash Heart, Melbourne, Australia
| | - J Cameron
- Monash Health, Monash Heart, Melbourne, Australia
| | - A Brown
- Monash Health, Monash Heart, Melbourne, Australia
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Uddin MH, Alim MS, Islam SMM, Rashid H, Shahjahan M. Temperature changes alter the acute toxicity responses of cypermethrin in Zebrafish. ACTA ACUST UNITED AC 2018. [DOI: 10.3329/pa.v29i1.37481] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The study was carried out to determine the effect of temperature changes on acute toxicity of pyrethroid pesticide cypermethrin in zebrafish. A two-day renewal bioassay system for 96h was conducted to find out LC50 value of cypermethrin at two temperature regimes i.e. 25°C and 30°C considering as T1 and T2, respectively. During the determination of LC50 in both temperatures, blood glucose (mg/dL) levels were measured at lower concentration (0.25 µg/L) of cypermethrin. The results of acute toxicity test at 96h LC50 values were calculated through probit analysis. It was found that 96h LC50 for T1 and T2 groups were about 2.1 and 1.4 µg/L, respectively. Significantly lower LC50 of cypermethrin at T2 compared to T1 showed that higher temperature increased the toxicity of cypermethrin. There was a significant increase (P<0.05) in blood glucose level (mg/dL) in 0.25 µg/L compared to 0 µg/L concentration of cypermethrin at both treatments. Dissolved oxygen decreased and free CO2 increased significantly (P<0.05) with increasing temperature, while the pH of the water was almost unchanged throughout the study period. The present study indicated the impact of increased temperature on pesticide toxicity in the aquatic ecosystem.Progressive Agriculture 29 (1): 64-70, 2018
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