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Rabea A, Naeem E, Balabel NM, Daigham GE. Management of potato brown rot disease using chemically synthesized CuO-NPs and MgO-NPs. Bot Stud 2023; 64:20. [PMID: 37458850 DOI: 10.1186/s40529-023-00393-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/01/2023] [Indexed: 07/20/2023]
Abstract
BACKGROUND Potatoes are a crucial vegetable crop in Egypt in terms of production and consumption. However, the potato industry suffers significant annual losses due to brown rot disease. This study aimed to suppress Ralstonia solanacearum (R. solanacearum), the causative agent of brown rot disease in potatoes, using efficient and economical medications such as CuO and MgO metal oxide nanoparticles, both in vitro and in vivo, to reduce the risk of pesticide residues. RESULTS CuO and MgO metal oxide nanoparticles were synthesized via a simple chemical process. The average particle size, morphology, and structure of the nanoparticles were characterized using UV-visible spectroscopy, transmission electron microscopy (TEM), zeta potential analysis, X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. The growth of R. solanacearum was strongly inhibited by CuO and MgO NPs at a concentration of 3 mg/mL, resulting in zones of inhibition (ZOI) of 19.3 mm and 17 mm, respectively. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of CuO-NPs and MgO-NPs were 0.5, 0.6, and 0.6, 0.75 mg/mL, respectively. When applied in vivo through seed dressing and tuber soaking at their respective MIC concentrations, CuO-NPs and MgO-NPs significantly reduced the incidence of brown rot disease to 71.2% and 69.4%, respectively, compared to 43.0% and 39.5% in bulk CuSO4 and bulk MgSO4 treatments, respectively. Furthermore, CuO-NPs and MgO-NPs significantly increased the yield, total chlorophyll content, and enzyme efficiency of potato plants compared with the infected control plants. TEM revealed that the bacterial cytomembrane was severely damaged by nanomechanical forces after interaction with CuO-NPs and MgO-NPs, as evidenced by lipid peroxidation and ultrastructural investigations. CONCLUSION The results of this study suggest that CuO-NPs and MgO-NPs can be used as intelligent agents to manage plant pathogens in agriculture. The use of metal oxide nanoparticles could provide a risk-free alternative for treating plant diseases, which are currently one of the biggest challenges faced by the potato industry in Egypt. The significant increase in yield, photosynthetic pigments, enzymatic activity, and total phenol-promoted resistance to R. solanacearum in potato plants treated with CuO-NPs and MgO-NPs compared to infected control plants highlights the potential benefits for the potato industry in Egypt. Further investigations are needed to explore using metal oxide nanoparticles for treating other plant diseases.
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Affiliation(s)
- Amira Rabea
- Bacterial Disease Research Department, Plant Pathology Research Institute, Agricultural Research Center (ARC), Giza, Egypt
| | - E Naeem
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University (Girls Branch), Cairo, Egypt
| | - Naglaa M Balabel
- Bacterial Disease Research Department, Plant Pathology Research Institute, Agricultural Research Center (ARC), Giza, Egypt
- Potato Brown Rot Project, Ministry of Agriculture, Dokki, Giza, Egypt
| | - Ghadir E Daigham
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University (Girls Branch), Cairo, Egypt.
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Gooch M, Mehta A, John T, Lomeli N, Naeem E, Mucci G, Toh YL, Chan A, Bota DA, Torno L. Feasibility of Cognitive Training to Promote Recovery in Cancer-Related Cognitive Impairment in Adolescent and Young Adult Patients. J Adolesc Young Adult Oncol 2021; 11:290-296. [PMID: 34672806 DOI: 10.1089/jayao.2021.0055] [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] [Indexed: 11/13/2022] Open
Abstract
Background: Computer-based cognitive rehabilitation programs may help adolescent and young adult (AYA) patients with cancer-related cognitive impairment. This pilot study investigated the feasibility of cognitive rehabilitation as a preventive intervention for AYA patients receiving chemotherapy. Explorative objectives included the correlation of cognitive performance with serum brain-derived neurotrophic factor (BDNF). Methods: This pilot prospective study included English-speaking patients 12-25 years of age with a fist diagnosis of cancer requiring chemotherapy. Participants enrolled in the intervention arm participated in a computer-based neurocognitive training program for 20-30 minutes daily for 16 weeks. Outcome measures, including engagement with and completion of computerized neurocognitive testing and serum BDNF levels, were obtained within the first month following diagnosis, ∼16 and 24 weeks from enrollment. Results: Fourteen of 18 eligible patients provided consent, with 7 patients assigned to each the intervention arm and nonintervention arm. Seventy-one percent of the patients in the intervention arm completed at least 80% of the required activities. Compared to baseline, patients in the nonintervention arm demonstrated higher prevalence of impairment in four of the six cognitive domains (processing speed, visual attention, attention/working memory, and executive function) at the end of the study period. There was a nonstatistically significant reduction of serum BDNF levels over time, which was observed in both intervention and nonintervention arms. Conclusion: This pilot study provides some evidence that it is feasible for AYAs with new cancer diagnoses to receive standardized cognitive rehabilitation. Patients receiving cognitive activities experienced less impairment in numerous cognitive domains.
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Affiliation(s)
- Megan Gooch
- Pediatric Hematology/Oncology, Children's Healthcare of Orange County, Orange, California, USA
| | - Aditi Mehta
- Pediatric Hematology/Oncology, Children's Healthcare of Orange County, Orange, California, USA
| | - Tami John
- Texas Children's Cancer and Hematology Centers, Texas Children's Hospital/Baylor College of Medicine, Houston, Texas, USA
| | - Naomi Lomeli
- Department of Neurology, University of California, Irvine, California, USA
| | - Erum Naeem
- Pediatric Hematology/Oncology, Children's Healthcare of Orange County, Orange, California, USA
| | - Grace Mucci
- Department of Pediatric Psychology, Children's Healthcare of Orange County, Orange, California, USA
| | - Yi Long Toh
- Department of Clinical Pharmacy Practice, University of California, Irvine, California, USA
| | - Alexandre Chan
- Department of Clinical Pharmacy Practice, University of California, Irvine, California, USA.,Chao Family Comprehensive Cancer Center, and University of California, Irvine, California, USA
| | - Daniela A Bota
- Department of Neurology, University of California, Irvine, California, USA.,Chao Family Comprehensive Cancer Center, and University of California, Irvine, California, USA.,Department of Neurological Surgery, University of California, Irvine, California, USA
| | - Lilibeth Torno
- Pediatric Hematology/Oncology, Children's Healthcare of Orange County, Orange, California, USA
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Lilani Z, Ahmed A, Tazeem R, Naeem E. BCG Vaccine An Innovation For Diabetes Treatment In Pakistan? J Ayub Med Coll Abbottabad 2017; 29:1-2. [PMID: 28712162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Zohair Lilani
- Department of Community Medicine, Ayub Medical College, Abbottabad, Pakistan
| | - Afrinah Ahmed
- Department of Community Medicine, Ayub Medical College, Abbottabad, Pakistan
| | - Rabbia Tazeem
- Department of Community Medicine, Ayub Medical College, Abbottabad, Pakistan
| | - Erum Naeem
- Department of Community Medicine, Ayub Medical College, Abbottabad, Pakistan
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Rehan VK, Liu J, Naeem E, Tian J, Sakurai R, Kwong K, Akbari O, Torday JS. Perinatal nicotine exposure induces asthma in second generation offspring. BMC Med 2012; 10:129. [PMID: 23106849 PMCID: PMC3568737 DOI: 10.1186/1741-7015-10-129] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 10/30/2012] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND By altering specific developmental signaling pathways that are necessary for fetal lung development, perinatal nicotine exposure affects lung growth and differentiation, resulting in the offsprings' predisposition to childhood asthma; peroxisome proliferator-activated receptor gamma (PPARγ) agonists can inhibit this effect. However, whether the perinatal nicotine-induced asthma risk is restricted to nicotine-exposed offspring only; whether it can be transmitted to the next generation; and whether PPARγ agonists would have any effect on this process are not known. METHODS Time-mated Sprague Dawley rat dams received either placebo or nicotine (1 mg/kg, s.c.), once daily from day 6 of gestation to postnatal day (PND) 21. Following delivery, at PND21, generation 1 (F1) pups were either subjected to pulmonary function tests, or killed to obtain their lungs, tracheas, and gonads to determine the relevant protein markers (mesenchymal contractile proteins), global DNA methylation, histone 3 and 4 acetylation, and for tracheal tension studies. Some F1 animals were used as breeders to generate F2 pups, but without any exposure to nicotine in the F1 pregnancy. At PND21, F2 pups underwent studies similar to those performed on F1 pups. RESULTS Consistent with the asthma phenotype, nicotine affected lung function in both male and female F1 and F2 offspring (maximal 250% increase in total respiratory system resistance, and 84% maximal decrease in dynamic compliance following methacholine challenge; P < 0.01, nicotine versus control; P < 0.05, males versus females; and P > 0.05, F1 versus F2), but only affected tracheal constriction in males (51% maximal increase in tracheal constriction following acetylcholine challenge, P < 0.01, nicotine versus control; P < 0.0001, males versus females; P > 0.05, F1 versus F2); nicotine also increased the contractile protein content of whole lung (180% increase in fibronectin protein levels, P < 0.01, nicotine versus control, and P < 0.05, males versus females) and isolated lung fibroblasts (for example, 45% increase in fibronectin protein levels, P < 0.05, nicotine versus control), along with decreased PPARγ expression (30% decrease, P < 0.05, nicotine versus control), but only affected contractile proteins in the male trachea (P < 0.05, nicotine versus control, and P < 0.0001, males versus females). All of the nicotine-induced changes in the lung and gonad DNA methylation and histone 3 and 4 acetylation were normalized by the PPARγ agonist rosiglitazone except for the histone 4 acetylation in the lung. CONCLUSIONS Germline epigenetic marks imposed by exposure to nicotine during pregnancy can become permanently programmed and transferred through the germline to subsequent generations, a ground-breaking finding that shifts the current asthma paradigm, opening up many new avenues to explore.
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Affiliation(s)
- Virender K Rehan
- Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center at David Geffen School of Medicine, 1124 West Carson Street, Torrance, 90502, USA
| | - Jie Liu
- Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center at David Geffen School of Medicine, 1124 West Carson Street, Torrance, 90502, USA
| | - Erum Naeem
- Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center at David Geffen School of Medicine, 1124 West Carson Street, Torrance, 90502, USA
| | - Jia Tian
- Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center at David Geffen School of Medicine, 1124 West Carson Street, Torrance, 90502, USA
| | - Reiko Sakurai
- Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center at David Geffen School of Medicine, 1124 West Carson Street, Torrance, 90502, USA
| | - Kenny Kwong
- Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center at David Geffen School of Medicine, 1124 West Carson Street, Torrance, 90502, USA
| | - Omid Akbari
- Department of Molecular Microbiology and Immunology, University of Southern California, Keck School of Medicine, 1975 Zonal Avenue, Los Angeles, 90033, USA
| | - John S Torday
- Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center at David Geffen School of Medicine, 1124 West Carson Street, Torrance, 90502, USA
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Liu J, Naeem E, Tian J, Lombardi V, Kwong K, Akbari O, Torday JS, Rehan VK. Sex-specific perinatal nicotine-induced asthma in rat offspring. Am J Respir Cell Mol Biol 2012; 48:53-62. [PMID: 23002101 DOI: 10.1165/rcmb.2011-0344oc] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Recently, we have suggested that down-regulation of homeostatic mesenchymal peroxisome proliferator-activated receptor γ signaling after in utero nicotine exposure might contribute to asthma. Here, we have exploited an in vivo rat model of asthma to determine if the effects of perinatal nicotine exposure on offspring pulmonary function and mesenchymal markers of airway contractility in both tracheal and lung parenchymal tissue are sex specific, and whether the protection afforded by the peroxisome proliferator-activated receptor γ agonist, rosiglitazone (RGZ), against the perinatal nicotine-induced effect on offspring lung is also sex specific. Pregnant rat dams received placebo, nicotine, or nicotine plus RGZ daily from Embryonic Day 6 until Postnatal Day 21, at which time lung resistance, compliance, tracheal contractility, and the expression of structural and functional mesenchymal markers of pulmonary contractility were determined. Compared with control animals, perinatal nicotine exposure caused a significant increase in airway resistance and a decrease in airway compliance after a methacholine challenge in both male and female offspring, with more pronounced changes in the males. In contrast to this, the effects of perinatal nicotine exposure on acetylcholine-induced tracheal constriction, along with the expression of its mesenchymal markers, were observed exclusively in the male offspring. Concomitant treatment with RGZ normalized the nicotine-induced alterations in pulmonary function in both sexes, as well as the male-specific effects on acetylcholine-induced tracheal constriction, along with the affected mesenchymal markers. These data suggest that perinatal nicotine exposure causes sex-specific perinatal cigarette smoke exposure-induced asthma, providing a powerful phenotypic model for unequivocally determining the underlying nature of the cell molecular mechanism for this disease.
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Affiliation(s)
- Jie Liu
- Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA 90502-2006, USA
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