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Alshammari ZA, Ali A, Alshammari LK, Alassaf OM, Alshehri AYA, AlSarhan R, Alanazi B. The Level of Awareness of Keratoconus Among the General Population in Hail Region, Saudi Arabia. Cureus 2023; 15:e50026. [PMID: 38186449 PMCID: PMC10767694 DOI: 10.7759/cureus.50026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2023] [Indexed: 01/09/2024] Open
Abstract
Background Keratoconus (KC) is a non-inflammatory corneal disease with an early onset in adulthood, leading to a reduction in visual acuity. This study aims to evaluate the level of awareness of keratoconus among the general population in the Hail region of Saudi Arabia. Methodology Data were collected through a pre-designed and pre-validated online questionnaire (Appendix) distributed via social media platforms. The questionnaire was divided into two sections. The first section included demographic profiles, while the second section inquired about knowledge and awareness regarding Keratoconus. The collected data was reviewed, coded, and inputted into IBM Corp. Released 2013. IBM SPSS Statistics for Windows, Version 22.0. Armonk, NY: IBM Corp. Statistical analyses were performed using the Pearson Chi-Square test, with statistical significance set at p<0.05. Results The total number of respondents was 550, among whom 40% were males and 60% were females. 79.6% of the participants were in the age range of 18-30 years. The level of education and a positive family history of KC showed significant associations with the level of knowledge about KC (p<0.05). The age group had a non-significant association (p=0.059), while gender had a significant association with the level of knowledge about keratoconus (p<0.05). Conclusion In conclusion, the overall awareness regarding KC progression, interventions, and the consequences of eye rubbing was limited among the participants. Specific efforts are crucial to enhance public awareness and understanding of KC, ensuring a more informed and proactive approach to eye health within the community.
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Affiliation(s)
- Zaki A Alshammari
- Department of Ophthalmology, University of Hail College of Medicine, Hail, SAU
| | - Abrar Ali
- Department of Ophthalmology, University of Hail College of Medicine, Hail, SAU
| | | | | | | | - Reem AlSarhan
- Clinical Sciences Department, College of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh, SAU
| | - Basmah Alanazi
- Department of Ophthalmology, University of Hail College of Medicine, Hail, SAU
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Odum JD, Standage S, Alder M, Zingarelli B, Devarajan P, Wong HR. Candidate Biomarkers for Sepsis-Associated Acute Kidney Injury Mechanistic Studies. Shock 2022; 57:687-693. [PMID: 35234208 PMCID: PMC9117431 DOI: 10.1097/shk.0000000000001916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Sepsis-associated acute kidney injury (SA-AKI) is a frequent complication of sepsis, yet the pathophysiologic mechanisms of SA-AKI are incompletely understood. PERSEVERE is a clinically validated serum biomarker panel with high sensitivity in predicting mortality from sepsis, and recent evidence suggests it can also predict severe, persistent SA-AKI at day 3 of hospitalization among septic children. We developed a murine model of PERSEVERE (mPERSEVERE) to further interrogate the sepsis-related biological underpinnings of SA-AKI using candidate biomarkers within mPERSEVERE. METHODS Eight-week-old C57BL/6 male mice underwent induction of sepsis by cecal ligation and puncture (CLP). mPERSEVERE biomarkers were collected at 8-hours and kidneys were harvested at 24-hours post-CLP Classification and regression tree analysis (CART) was used to generate a SA-AKI predictive model. Kidney gene expression levels of candidate biomarkers were quantified using real time polymerase chain reaction. RESULTS Thirty- five mice underwent CLP Among mice identified by mPERSEVERE as high-risk for mortality, 70% developed SA-AKI at 24-hours compared to 22% of low-risk mice. CART analysis identified two mPERSEVERE biomarkers-C-C motif chemokine ligand 3 (CCL3) and keratinocyte-derived chemokine (KC)-as most predictive for SA-AKI with an area under the receiver operating curve of 0.90. In mice that developed SA-AKI, renal expression of KC was significantly increased compared to mice without SA-AKI (p = 0.013), whereas no difference was seen in renal expression of CCL3 in mice with SA-AKI vs. no SA-AKI. KC and CCL3 localized to renal tubule epithelial cells as opposed to infiltrating immune cells by immunohistochemistry. CONCLUSIONS The combination of plasma CCL3+KC can predict SA-AKI development in mice at 24-hours following CLP Of these two biomarkers, only renal expression of KC is increased in mice with SA-AKI. Further studies are required to determine if KC directly contributes to the underlying pathobiology of SA-AKI.
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Affiliation(s)
- James D Odum
- Division of Critical Care, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Steve Standage
- Division of Critical Care, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Matthew Alder
- Division of Critical Care, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Basilia Zingarelli
- Division of Critical Care, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Prasad Devarajan
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Hector R Wong
- Division of Critical Care, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
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Alexander NS, Hatch N, Zhang S, Skinner D, Fortenberry J, Sorscher EJ, Woodworth BA. Resveratrol has salutary effects on mucociliary transport and inflammation in sinonasal epithelium. Laryngoscope 2011; 121:1313-9. [PMID: 21480283 PMCID: PMC3100379 DOI: 10.1002/lary.21798] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Accepted: 02/15/2011] [Indexed: 01/06/2023]
Abstract
OBJECTIVE/HYPOTHESIS Therapeutic agents that enhance mucociliary transport (via stimulation of transepithelial Cl- secretion) and inhibit inflammation could provide considerable advantages over conventional treatments for chronic rhinosinusitis (CRS). The objectives of the present study were to investigate whether the polyphenolic compound resveratrol promotes transepithelial Cl- transport and inhibits KC/IL-8 secretion in sinonasal epithelium. STUDY DESIGN In vitro and in vivo study. METHODS Transepithelial Cl- transport was investigated in primary murine nasal septal (MNSE) and human sinonasal epithelial (HSNE) cultures. In vivo activity was also measured using the murine nasal potential difference assay. CFTR R-domain phosphorylation and cAMP levels were examined as a test of cAMP/PKA-dependent activation. In vitro LPS-induced KC/IL-8 secretion was quantified and compared to a panel of intranasal steroids. RESULTS Resveratrol(100 μM) significantly increased CFTR-mediated Cl- transport (change in short-circuit current, ΔI(SC) ) in both MNSE (13.51 ± 0.77 vs. 4.4 ± 0.66 [control]; P < .05) and HSNE (12.28 ± 1.08 vs. 0.69 ± 0.32 [control]; P < .05). Cl- secretion across in vivo murine nasal epithelium was also enhanced (-4 ± 1.8 vs. -0.8 ± 1.7mV [control], P < .05). There was no increase in cellular cAMP or CFTR R-domain phosphorylation detected. Resveratrol also significantly inhibited KC/IL-8 secretion in a dose-dependent fashion (pg/mL) in MNSE (181 ± 39[100 μM) vs. 94 ± 16 [200 μM] vs. 16 ± 22 [500 μM] vs. 1195 ± 355 [LPS control]; P < .001). The compound robustly abrogated KC/IL-8 secretion when compared to ciclesonide (765 ± 139), triamcinolone (561 ± 124), and budesonide (742 ± 428), but had similar activity to fluticasone proprionate (65 ± 47). Similar effects were demonstrated in HSNE (975 ± 244 [100 μM] vs. 1825 ± 144 [LPS control]; P < .001) with inhibition comparable to fluticasone proprionate (785 ± 277). CONCLUSIONS These in vitro and in vivo findings indicate resveratrol is a potent Cl- secretagogue and anti-inflammatory agent. Future clinical trials for CRS are warranted.
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Affiliation(s)
- Nathan S. Alexander
- Department of Surgery/Division of Otolaryngology, University of Alabama at Birmingham, AL
| | - Neal Hatch
- Department of Surgery/Division of Otolaryngology, University of Alabama at Birmingham, AL
| | - Shaoyan Zhang
- Department of Surgery/Division of Otolaryngology, University of Alabama at Birmingham, AL
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, AL
| | - Daniel Skinner
- Department of Surgery/Division of Otolaryngology, University of Alabama at Birmingham, AL
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, AL
| | - James Fortenberry
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, AL
| | - Eric J. Sorscher
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, AL
| | - Bradford A. Woodworth
- Department of Surgery/Division of Otolaryngology, University of Alabama at Birmingham, AL
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, AL
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Larmonier C, Midura-Kiela M, Ramalingam R, Laubitz D, Janikashvili N, Larmonier N, Ghishan F, Kiela P. Modulation of neutrophil motility by curcumin: implications for inflammatory bowel disease. Inflamm Bowel Dis 2011; 17:503-15. [PMID: 20629184 PMCID: PMC2958245 DOI: 10.1002/ibd.21391] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Neutrophils (PMN) are the first cells recruited at the site of inflammation. They play a key role in the innate immune response by recognizing, ingesting, and eliminating pathogens and participate in the orientation of the adaptive immune responses. However, in inflammatory bowel disease (IBD) transepithelial neutrophil migration leads to an impaired epithelial barrier function, perpetuation of inflammation, and tissue destruction via oxidative and proteolytic damage. Curcumin (diferulolylmethane) displays a protective role in mouse models of IBD and in human ulcerative colitis, a phenomenon consistently accompanied by a reduced mucosal neutrophil infiltration. METHODS We investigated the effect of curcumin on mouse and human neutrophil polarization and motility in vitro and in vivo. RESULTS Curcumin attenuated lipopolysaccharide (LPS)-stimulated expression and secretion of macrophage inflammatory protein (MIP)-2, interleukin (IL)-1β, keratinocyte chemoattractant (KC), and MIP-1α in colonic epithelial cells (CECs) and in macrophages. Curcumin significantly inhibited PMN chemotaxis against MIP-2, KC, or against conditioned media from LPS-treated macrophages or CEC, a well as the IL-8-mediated chemotaxis of human neutrophils. At nontoxic concentrations, curcumin inhibited random neutrophil migration, suggesting a direct effect on neutrophil chemokinesis. Curcumin-mediated inhibition of PMN motility could be attributed to a downregulation of PI3K activity, AKT phosphorylation, and F-actin polymerization at the leading edge. The inhibitory effect of curcumin on neutrophil motility was further demonstrated in vivo in a model of aseptic peritonitis. CONCLUSIONS Our results indicate that curcumin interferes with colonic inflammation partly through inhibition of the chemokine expression and through direct inhibition of neutrophil chemotaxis and chemokinesis.
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Affiliation(s)
- C.B. Larmonier
- Department of Pediatrics, Steele Children’s Research Center, University of Arizona Health Sciences Center, Tucson, Arizona
| | - M.T. Midura-Kiela
- Department of Pediatrics, Steele Children’s Research Center, University of Arizona Health Sciences Center, Tucson, Arizona
| | - R. Ramalingam
- Department of Immunobiology, University of Arizona Health Sciences Center, Tucson, Arizona
| | - D. Laubitz
- Department of Pediatrics, Steele Children’s Research Center, University of Arizona Health Sciences Center, Tucson, Arizona
| | - N. Janikashvili
- Department of Pediatrics, Steele Children’s Research Center, University of Arizona Health Sciences Center, Tucson, Arizona
| | - N. Larmonier
- Department of Pediatrics, Steele Children’s Research Center, University of Arizona Health Sciences Center, Tucson, Arizona, Department of Immunobiology, University of Arizona Health Sciences Center, Tucson, Arizona
| | - F.K. Ghishan
- Department of Pediatrics, Steele Children’s Research Center, University of Arizona Health Sciences Center, Tucson, Arizona
| | - P.R. Kiela
- Department of Pediatrics, Steele Children’s Research Center, University of Arizona Health Sciences Center, Tucson, Arizona, Department of Immunobiology, University of Arizona Health Sciences Center, Tucson, Arizona
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Thatcher TH, McHugh NA, Egan RW, Chapman RW, Hey JA, Turner CK, Redonnet MR, Seweryniak KE, Sime PJ, Phipps RP. Role of CXCR2 in cigarette smoke-induced lung inflammation. Am J Physiol Lung Cell Mol Physiol 2005; 289:L322-8. [PMID: 15833762 PMCID: PMC2491909 DOI: 10.1152/ajplung.00039.2005] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
It has been hypothesized that the destruction of lung tissue observed in smokers with chronic obstructive pulmonary disease and emphysema is mediated by neutrophils recruited to the lungs by smoke exposure. This study investigated the role of the chemokine receptor CXCR2 in mediating neutrophilic inflammation in the lungs of mice acutely exposed to cigarette smoke. Exposure to dilute mainstream cigarette smoke for 1 h, twice per day for 3 days, induced acute inflammation in the lungs of C57BL/6 mice, with increased neutrophils and the neutrophil chemotactic CXC chemokines macrophage inflammatory protein (MIP)-2 and KC. Treatment with SCH-N, an orally active small molecule inhibitor of CXCR2, reduced the influx of neutrophils into the bronchoalveolar lavage (BAL) fluid. Histological changes were seen, with drug treatment reducing perivascular inflammation and the number of tissue neutrophils. beta-Glucuronidase activity was reduced in the BAL fluid of mice treated with SCH-N, indicating that the reduction in neutrophils was associated with a reduction in tissue damaging enzymes. Interestingly, whereas MIP-2 and KC were significantly elevated in the BAL fluid of smoke exposed mice, they were further elevated in mice exposed to smoke and treated with drug. The increase in MIP-2 and KC with drug treatment may be due to the decrease in lung neutrophils that either are not present to bind these chemokines or fail to provide a feedback signal to other cells producing these chemokines. Overall, these results demonstrate that inhibiting CXCR2 reduces neutrophilic inflammation and associated lung tissue damage due to acute cigarette smoke exposure.
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Affiliation(s)
- T H Thatcher
- Department of Medicine, Univ. of Rochester School of Medicine and Dentistry, Lung Biology and Disease Program, 601 Elmwood Ave., Box 850, Rochester, NY 14642, USA
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Abstract
CXC chemokines, macrophage inflammatory protein-2 (MIP-2) and KC, (a cloning designation based on ordinate and abscissa position) as well as the CXC chemokine receptor, CXCR2, are expressed in a variety of cells and tissues in adult mice. Targeted deletion of the gene encoding murine CXCR2 does not result in obvious changes in the development of the organ system of the mouse, though the CXCR2-/- mouse is compromised with regard to its ability to resist infection, heal wounds, and maintain homeostasis when challenged with microbes and/or chemicals. In an attempt to develop insight into additional possible subtle roles of CXCR2 and its ligands in the development of the mouse, we examined the expression of MIP-2, KC, CXCR2, as well as the Duffy antigen binding protein for chemokines during embryonic (p.c.) days 11.5 through 14.5 in the mouse. We observed strong correlation between the expression of MIP-2 and CXCR2 in the developing brain, cardiovascular system and condensing mesenchyme between 11.5 and 13.5 days. Moreover, the expression of KC was parallel to the expression of the Duffy antigen binding protein for chemokines with regard to temporal pattern and tissue localization. MIP-2 and CXCR2 are highly expressed in the brain, first in the cerebellum and in the head mesenchyme, the meninges and the floor plate, and by 14.5 days are also present in the telencephalon, thalamus and hypothalamus. In the developing brain KC and Duffy were prominently expressed in the neuronal tracts, the forebrain, sympathetic ganglia, and along the periphery of the neural tube. However, KC and Duffy were less prevalent in the developing cardiovascular system, lung and other organs, muscle and bone, than are CXCR2 and MIP-2. These data suggest that the roles for these chemokines and their receptors during development may be more significant than was initially thought based upon the phenotype of the mice with targeted deletion of CXCR2 and Duffy.
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Affiliation(s)
- Jing Luan
- Department of Veterans Affairs, Nashville, TN
- Department of Cancer Biology, Vanderbilt University School of Medicine, M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Yasuhide Furuta
- Department of Biochemistry and Molecular Biology, Program in Genes & Development, M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Jianguo Du
- Department of Veterans Affairs, Nashville, TN
- Department of Cancer Biology, Vanderbilt University School of Medicine, M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Ann Richmond
- Department of Veterans Affairs, Nashville, TN
- Department of Cancer Biology, Vanderbilt University School of Medicine, M.D. Anderson Cancer Center, Houston, TX 77030, USA
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