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Raynaud CM, Ahmed EI, Jabeen A, Sanchez A, Sherif S, Carneiro-Lobo TC, Awad A, Awartani D, Naik A, Thomas R, Decock J, Zoppoli G, Bedongnetti D, Hendrickx WRL. Modulation of SLFN11 induces changes in DNA Damage response in breast cancer. Cancer Cell Int 2023; 23:291. [PMID: 38001424 PMCID: PMC10668346 DOI: 10.1186/s12935-023-03144-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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND Lack of Schlafen family member 11 (SLFN11) expression has been recently identified as a dominant genomic determinant of response to DNA damaging agents in numerous cancer types. Thus, several strategies aimed at increasing SLFN11 are explored to restore chemosensitivity of refractory cancers. In this study, we examined various approaches to elevate SLFN11 expression in breast cancer cellular models and confirmed a corresponding increase in chemosensitivity with using the most successful efficient one. As oncogenic transcriptomic downregulation is often driven by methylation of the promotor region, we explore the demethylation effect of 5-aza-2'-deoxycytidine (decitabine), on the SLFN11 gene. Since SLFN11 has been reported as an interferon inducible gene, and interferon is secreted during an active anti-tumor immune response, we investigated the in vitro effect of IFN-γ on SLFN11 expression in breast cancer cell lines. As a secondary approach to pick up cross talk between immune cells and SLFN11 expression we used indirect co-culture of breast cancer cells with activated PBMCs and evaluated if this can drive SLFN11 upregulation. Finally, as a definitive and specific way to modulate SLFN11 expression we implemented SLFN11 dCas9 (dead CRISPR associated protein 9) systems to specifically increase or decrease SLFN11 expression. RESULTS After confirming the previously reported correlation between methylation of SLFN11 promoter and its expression across multiple cell lines, we showed in-vitro that decitabine and IFN-γ could increase moderately the expression of SLFN11 in both BT-549 and T47D cell lines. The use of a CRISPR-dCas9 UNISAM and KRAB system could increase or decrease SLFN11 expression significantly (up to fivefold), stably and specifically in BT-549 and T47D cancer cell lines. We then used the modified cell lines to quantify the alteration in chemo sensitivity of those cells to treatment with DNA Damaging Agents (DDAs) such as Cisplatin and Epirubicin or DNA Damage Response (DDRs) drugs like Olaparib. RNAseq was used to elucidate the mechanisms of action affected by the alteration in SLFN11 expression. In cell lines with robust SLFN11 promoter methylation such as MDA-MB-231, no SLFN11 expression could be induced by any approach. CONCLUSION To our knowledge this is the first report of the stable non-lethal increase of SLFN11 expression in a cancer cell line. Our results show that induction of SLFN11 expression can enhance DDA and DDR sensitivity in breast cancer cells and dCas9 systems may represent a novel approach to increase SLFN11 and achieve higher sensitivity to chemotherapeutic agents, improving outcome or decreasing required drug concentrations. SLFN11-targeting therapies might be explored pre-clinically to develop personalized approaches.
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Affiliation(s)
| | - Eiman I Ahmed
- Tumor Biology and Immunology Lab, Research Branch, Sidra Medicine, Doha, Qatar
- Department of Biomedical Science, College of Health Sciences, Qatar University, Doha, Qatar
| | - Ayesha Jabeen
- Tumor Biology and Immunology Lab, Research Branch, Sidra Medicine, Doha, Qatar
| | - Apryl Sanchez
- Tumor Biology and Immunology Lab, Research Branch, Sidra Medicine, Doha, Qatar
| | - Shimaa Sherif
- Tumor Biology and Immunology Lab, Research Branch, Sidra Medicine, Doha, Qatar
| | | | - Amany Awad
- Tumor Biology and Immunology Lab, Research Branch, Sidra Medicine, Doha, Qatar
| | - Dina Awartani
- Tumor Biology and Immunology Lab, Research Branch, Sidra Medicine, Doha, Qatar
| | - Adviti Naik
- Translational Cancer and Immunity Center, Qatar Biomedical Research Center, Doha, Qatar
| | - Remy Thomas
- Translational Cancer and Immunity Center, Qatar Biomedical Research Center, Doha, Qatar
| | - Julie Decock
- Translational Cancer and Immunity Center, Qatar Biomedical Research Center, Doha, Qatar
- College of Health and Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Doha, Qatar
| | - Gabriele Zoppoli
- Department of Internal Medicine (DiMI), University of Genoa and Ospedale Policlinico San Martino, Genoa, Italy
- Ospedale Policlinico San Martino IRCCS per l'Oncologia, Genoa, Italy
| | - Davide Bedongnetti
- Tumor Biology and Immunology Lab, Research Branch, Sidra Medicine, Doha, Qatar
- Department of Internal Medicine (DiMI), University of Genoa and Ospedale Policlinico San Martino, Genoa, Italy
- Clinical and Experimental Oncology and Hematology, Ospedale Policlinico San Martino, Genoa, Italy
| | - Wouter R L Hendrickx
- Tumor Biology and Immunology Lab, Research Branch, Sidra Medicine, Doha, Qatar.
- College of Health and Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Doha, Qatar.
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Dinesh Eshwar M, Jabeen A, Jalily QA, Begum GS. Knowledge, Awareness, and Perception of Common Eye Diseases and Eye Donation Among People Seeking Healthcare in a Tertiary Hospital in Telangana, South India. Cureus 2022; 14:e31412. [DOI: 10.7759/cureus.31412] [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] [Accepted: 11/12/2022] [Indexed: 11/13/2022] Open
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Jabeen A, Rahman Amberina A, Gayathri V, Dinesh Eshwar M, Dodda S, Begum GS, Vadakedath S, Kandi V. Assessment of Breastfeeding, Weaning, and Complementary Feeding Practices Among Women Attending a Tertiary Care Teaching Hospital in South India. Cureus 2022; 14:e28791. [PMID: 36225494 PMCID: PMC9534529 DOI: 10.7759/cureus.28791] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2022] [Indexed: 11/10/2022] Open
Abstract
Introduction Infants depend exclusively on mothers’ milk for nutrition in their early months of life. However, some infants are given cow/buffalo milk during insufficiency. After six months, the children are supplemented with complementary food, including solid food, to meet the nutritional requirements of a growing infant, a process known as weaning. Therefore, it is important for mothers to have a clear understanding of the nature of food, and the nutritional requirements of the children. This study aimed to understand the knowledge, awareness, and practice of breastfeeding, weaning, and complementary feeding among women. Methods A cross-sectional questionnaire-based observational study was carried out between May and June 2021. The study included 150 women attending the outpatient department of pediatrics attached to Mahavir Institute of Medical Sciences (MIMS), Vikarabad, Telangana, India. After taking the informed consent, the researcher filled out a pre-validated questionnaire based on the subjects' responses. The data regarding socio-demographic details and information regarding knowledge, timing, practices of weaning, knowledge of nutritional requirements, and child feeding practices were collected as a pre-test. An educational briefing of the essentials of child feeding practices, weaning, and dietary requirements was undertaken using chalk and board and audio-visual aids, among others. In the post-test, the knowledge of mothers regarding weaning practices, the importance of weaning, and understanding of the nutritional requirements and their inclusion in a child’s diet was assessed. The quantitative data were represented as percentages. The Chi-square test was applied to find out the statistical significance of the results obtained from the study. Results Of the 150 women who participated in the study, the majority belonged to the age group of 18-23 years (66.7%). Most women were illiterate (34%) and only 12% were graduates. More than 70% of the participants belonged to the middle and lower middle class. The majority of participants (96.7%) had carried out exclusive breastfeeding for the first six months, and 63.35% of mothers had initiated weaning their child between the age of 6-12 months. Only 37.4% of mothers started breastfeeding within hours after the delivery. A combination of all foods (36%), rice/wheat (29%), processed food (18.8%), fruits and vegetables (9.2%), and pulses (6.7%) were chosen for weaning. Many felt that eggs and meat supplementation can be done between 12-18 months. Conclusion The knowledge of breastfeeding and best practices of weaning and complementary feeding habits significantly affects the child’s growth and overall health. The women in this study had a moderate level of understanding regarding the aspects of breastfeeding, weaning practices, and complementary dietary requirements during weaning.
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Khalid W, Arshad MS, Jabeen A, Muhammad Anjum F, Qaisrani TB, Suleria HAR. Fiber‐enriched botanicals: A therapeutic tool against certain metabolic ailments. Food Sci Nutr 2022; 10:3203-3218. [PMID: 36249968 PMCID: PMC9548355 DOI: 10.1002/fsn3.2920] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 12/27/2022] Open
Affiliation(s)
- Waseem Khalid
- Department of Food Science Faculty of Life Sciences Government College University Faisalabad Pakistan
| | - Muhammad Sajid Arshad
- Department of Food Science Faculty of Life Sciences Government College University Faisalabad Pakistan
| | - Ayesha Jabeen
- Department of Food Science Faculty of Life Sciences Government College University Faisalabad Pakistan
| | - Faqir Muhammad Anjum
- University of the Gambia Banjul The Gambia
- IFANCA Halal Apex (Pvt.) Limited Faisalabad Pakistan
| | - Tahira Batool Qaisrani
- Department of Agricultural Engineering and Technology Ghazi University Dera Ghazi Khan Pakistan
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Jabeen A, Yamini V, Rahman Amberina A, Dinesh Eshwar M, Vadakedath S, Begum GS, Kandi V. Polycystic Ovarian Syndrome: Prevalence, Predisposing Factors, and Awareness Among Adolescent and Young Girls of South India. Cureus 2022; 14:e27943. [PMID: 36120281 PMCID: PMC9464521 DOI: 10.7759/cureus.27943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2022] [Indexed: 11/05/2022] Open
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6
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Jabeen A, Khadim R, Azhar M, Farrukh U. Strabismus as a Psychosocial Disease in Pakistani Cultural Context. pak J Ophthalmol 2022. [DOI: 10.36351/pjo.v38i3.1385] [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: 11/01/2022] Open
Abstract
Purpose: to find out the relationship between psychosocial issues, self-concept, and interpersonal difficulties in patients with strabismus.
Study Design: Descriptive observational study
Place and Duration of Study: This study is conducted in university of Management and Technology from September 2019 to January 2020
Method:This study included 100 participants (male to female ratio of 1:1), recruited from one government and two semi-government eye hospitals of Lahore, through purposive sampling technique. A demographic sheet including the information about the participant’s age, gender, marital status, family system, reason of strabismus, and duration of strabismus were included in the study. The measures of the study included the indigenous Psychosocial Issues Scale, Self-concept scale,and Interpersonal difficulties scale.
Results: The mean age of the patients was 24.5+2.17. Among 100 patients, 41% were married and 64% were living in a nuclear family system. There were 21% with matriculation, 24% had intermediate and 55% had graduation or masters level of education. The cause of strabismus was genetic (20%), congenital (16%), and due to different health issues such as diabetes (63%). The analysis was carried out by using Pearson product-moment correlation analysis which showed that Psychosocial Problems (PSP) had a significant positive relation withInterpersonal Difficulty (ID) (r=.51, p<0.001) and negativeSelf-Concept(NSC) (r=.55, p<0.001), and a non-significant relationship with positive SC (r.08=p>0.05). The most frequently reported psychosocial verbatim werecryingbehavior (72%), difficulty in finding a job (72%) and feeling worthless (69%).
Conclusion:The results of the study revealed that negative self-concept contributesto causinginterpersonal difficulties in persons with strabismus.
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Abbas MS, Saeed F, Afzaal M, Jianfeng L, Hussain M, Ikram A, Jabeen A. Recent Trends in Encapsulation of Probiotics in Dairy and Beverage: A Review. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Farhan Saeed
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Muhammad Afzaal
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Lu Jianfeng
- School of Biotechnology and Food Engineering Hefei University of Technology China
| | - Muzzamal Hussain
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Ali Ikram
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Ayesha Jabeen
- National Institute of Food Science and Technology University of Agriculture Faisalabad Pakistan
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Moni SS, Tripathi P, Sultan MH, Alshahrani S, Alqahtani SS, Madkhali OA, Bakkari MA, Pancholi SS, Elmobark ME, Jabeen A, Sanobar S, Ashafaq M, Siddiqui MAH. Wound-healing and cytokine-modulating potential of medicinal oil formulation comprising leaf extract of Murraya koenigii and olive oil. BRAZ J BIOL 2022; 82:e256158. [PMID: 35384962 DOI: 10.1590/1519-6984.256158] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 02/13/2022] [Indexed: 01/06/2023] Open
Abstract
The study investigated the wound healing effect of medicinal oil (MO) formulation prepared from Murraya koenigii leaves extract (methanolic) incorporated in olive oil. The MO was visually transparent, homogenous, smooth in texture, the viscosity grade was observed as 140 cP and easily spreadable. Pro-inflammatory cytokines IL-1β, IL-6, and TNF-α were significantly reduced to 82.3 ± 3.5, 156 ± 6.2, 137.3. ± 5.5 pg/ml, respectively after treatment with MO when compared to disease control animals that showed IL-1β, IL-6, and TNF-α levels of 170 ± 6, 265 ± 7, and 288.6 ± 11, pg/ml respectively. The level of pro-inflammatory cytokine in povidone iodine solution (PIS) group was 95.3 ± 3, 162 ± 6, 177.6 ± 8.9 pg/ml of IL-1β, IL-6, and TNF-α respectively. Interestingly, the wound-healing efficacy of MO was found better as compared to povidone iodine treated standard group and concluded that MO has excellent wound healing effect.
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Affiliation(s)
- S S Moni
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - P Tripathi
- Jazan University, College of Pharmacy, Department of Pharmacology and Toxicology, Jazan, Saudi Arabia
| | - M H Sultan
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - S Alshahrani
- Jazan University, College of Pharmacy, Department of Pharmacology and Toxicology, Jazan, Saudi Arabia
| | - S S Alqahtani
- Jazan University, College of Pharmacy, Clinical Pharmacy Department, Jazan, Saudi Arabia.,Jazan University,College of Pharmacy, Pharmacy Practice Research Unit, Jazan, Saudi Arabia
| | - O A Madkhali
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - M A Bakkari
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - S S Pancholi
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - M E Elmobark
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - A Jabeen
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - S Sanobar
- Jazan University, College of Pharmacy, Department of Pharmacognosy, Jazan, Saudi Arabia
| | - M Ashafaq
- Jazan University, College of Pharmacy, Department of Pharmacology and Toxicology, Jazan, Saudi Arabia
| | - M A H Siddiqui
- Jazan University, College of Pharmacy, Department of Pharmacology and Toxicology, Jazan, Saudi Arabia
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Makroo H, Srivastava B, Jabeen A. Influence of mild electric field (MEF) on polyphenol oxidase and quality attributes of pineapple juice during ohmic heating. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.113021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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10
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Gupta I, Nasrallah GK, Sharma A, Jabeen A, Smatti MK, Al-Thawadi HA, Sultan AA, Alkhalaf M, Vranic S, Al Moustafa AE. Correction to: Co-prevalence of human Papillomaviruses (HPV) and Epstein–Barr virus (EBV) in healthy blood donors from diverse nationalities in Qatar. Cancer Cell Int 2022; 22:45. [PMID: 35093069 PMCID: PMC8801089 DOI: 10.1186/s12935-022-02459-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/10/2022] [Indexed: 11/10/2022] Open
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11
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Ali MM, Baig MT, Huma A, Ibrahim S, Khan SA, Fatima R, Majeed S, Rawat A, Soomro H, Lodhi M, Jabeen A, Syed N, Huda A. Effect of Agaricus blazei Murill on exploratory behavior of mice-model. BRAZ J BIOL 2021; 84:e252575. [PMID: 34932635 DOI: 10.1590/1519-6984.252575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/18/2021] [Indexed: 11/22/2022] Open
Abstract
Increased anxiety and depressive symptoms have reported to be its association with long term illness. Because of having unwanted effects of newly available drugs, patients administering anxiolytic drugs usually discontinue the treatment before they are completely recovered. Therefore, there is a serious need to develop new anxiolytic drugs. The anxiolytic effect of hydro-alcoholic extract of Agaricus blazei in animal models was assessed. 24 male mice (Mus musculus genus) were included in the study. Four groups were prepared and each group contained six animals. The groups were vehicle control, positive control (diazepam 1.0 mg/kg, i.p.) as well as two treatment groups receiving Agaricus blazei hydro-alcoholic extract at a dose of 136.50 mg/kg and 273.0 mg/kg orally. The Marble burying test, Nestlet shredding test and Light and Dark box test used to assess anxiolytic activity. Mice administered with diazepam 1.0 mg/kg, i.p. while hydro-alcoholic extract of AbM (136.50 and 273.0 mg/kg, respectively) was administered via oral route which exhibited marked reduction in number of marbles-burying as compared to vehicle control group. Mice administered with diazepam 1.0 mg/kg, i.p. and Oral administration of hydro-alcoholic extract of AbM (136.50 and 273.0 mg/kg, respectively) exhibited significant decrease in nestlet shredding in comparison to vehicle control group. The oral administration of hydro-alcoholic extract at a dose of 136.5mg/kg and 273mg/kg showed elevation in time spent in light box and was comparable to standard treated group while time spent by mice following oral administration of hydro-alcoholic extract of Agaricus blazei at a dose of 273.0 mg/kg also showed elevation and was found to be more near to standard treated group (diazepam 1 mg/kg, i.p.).
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Affiliation(s)
- M M Ali
- Ziauddin University, Faculty of Pharmacy, Department of Pharmaceutics, Karachi, Pakistan
| | - M T Baig
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacy Practice, Karachi, Pakistan
| | - A Huma
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacognosy, Karachi, Pakistan
| | - S Ibrahim
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacology, Karachi, Pakistan
| | - S A Khan
- Memon Medical Institute Hospital, Karachi, Pakistan
| | - R Fatima
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacy Practice, Karachi, Pakistan
| | - S Majeed
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacology, Karachi, Pakistan
| | - A Rawat
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacy Practice, Karachi, Pakistan
| | - H Soomro
- Ziauddin University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Karachi, Pakistan
| | - M Lodhi
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacology, Karachi, Pakistan
| | - A Jabeen
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacology, Karachi, Pakistan
| | - N Syed
- Ziauddin University, Faculty of Pharmacy, Department of Pharmacy Practice, Karachi, Pakistan
| | - A Huda
- Sante Pharma (Pvt) Ltd, Karachi, Pakistan
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Zaitoon A, Jabeen A, Ahenkorah C, Scott-Dupree C, Lim LT. In-package fumigation of blueberries using ethyl formate: Effects on spotted-wing drosophila (Drosophila suzukii Matsumura) mortality and fruit quality. Food Packag Shelf Life 2021. [DOI: 10.1016/j.fpsl.2021.100717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jabeen A, Zaitoon A, Lim LT, Scott-Dupree C. Toxicity of Five Plant Volatiles to Adult and Egg Stages of Drosophila suzukii Matsumura (Diptera: Drosophilidae), the Spotted-Wing Drosophila. J Agric Food Chem 2021; 69:9511-9519. [PMID: 34379409 DOI: 10.1021/acs.jafc.1c01384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The environmental impact of methyl bromide (MB) has resulted in its phase out as an insecticidal fumigant except for critical use exempted categories. Consequently, there is an urgent need to develop an environmentally sustainable MB alternative fumigant. trans-Cinnamaldehyde (TC), benzaldehyde, allyl isothiocyanate (AITC), hexanal, and ethyl formate (EF) are naturally occurring plant volatiles with insecticidal properties. This study assessed the toxicity of these plant volatiles to adult and egg stages of the spotted-wing drosophila (SWD) (Drosophila suzukii Matsumura). The plant volatile treatments had a significant effect on adult SWD mortality. The descending order of toxicity to adult SWD was benzaldehyde > AITC > TC > hexanal > EF at a headspace concentration of 0.50 μL/L air for 24 h. All the volatiles, at a concentration of 4.00 μL/L air, significantly inhibited larval emergence from SWD eggs in artificial diet compared to the control. At a 0.50 μL/L air level, among the volatiles tested, only AITC exhibited 100% inhibition against larval emergence from SWD eggs in blueberry fruits after 24 h exposure. In summary, this study shows that all volatiles tested elicited varying degrees of toxicity toward SWD adults and eggs. However, AITC was the most efficacious volatile and the one with the greatest promise as a post-harvest fumigant for both adult and egg stages of SWD.
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Affiliation(s)
- Ayesha Jabeen
- School of Environmental Sciences, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Amr Zaitoon
- Department of Food Science, University of Guelph, Guelph, Ontario N1G2W1, Canada
| | - Loong-Tak Lim
- Department of Food Science, University of Guelph, Guelph, Ontario N1G2W1, Canada
| | - Cynthia Scott-Dupree
- School of Environmental Sciences, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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Abstract
Misdiagnosis has become a public health crisis and it is unavoidable in all health care systems. This case study is about a nine year old boy, referred by the special school teacher presenting with the complaints of Autism and slow learning. Contrary to his complaints, the developmental assessment showed that the child had no symptoms of Autism, whereas moderate symptoms of Intellectual Disability were made known. The brief therapeutic plan focused on enhancing his functional level of adaptive behaviour. This case report holds its implication to drift attention of stakeholders working in different health care systems towards the issue of misdiagnosis.
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Affiliation(s)
- Sibgha Farooqi
- Institute of Clinical Psychology, University of Management and Technology, Lahore, Pakistan
| | - Ayesha Jabeen
- Institute of Clinical Psychology, University of Management and Technology, Lahore, Pakistan
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Moni SS, Alam MF, Sultan MH, Makeen HA, Alhazmi HA, Mohan S, Alam MS, Rehman ZU, Jabeen A, Sanobar S, Elmobark ME, Siddiqui R, Anwer T. Spectral analysis, in vitro cytotoxicity and antibacterial studies of bioactive principles from the leaves of Conocarpus lancifolius, a common tree of Jazan, Saudi Arabia. BRAZ J BIOL 2021; 83:e244479. [PMID: 34320049 DOI: 10.1590/1519-6984.244479] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 01/26/2021] [Indexed: 11/22/2022] Open
Abstract
The objective of the present study was to analyse the bioactive compounds of the leaves of Conocarpus lancifolius (C. lancifolius). The GC-MS analysis of the hot methanolic extract of the leaves (HMEL) of C. lancifolius exhibited the bioactive compounds such as 1-(3-Methoxy-2-nitrobenzyl) iso quinoline, morphin-4-ol-6,7-dione, 1-bromo-N-methyl-, phytol, hexadecanoic acid, 2,3-dihydroxypropyl ester, 2,2':4',2"-terthiophene, ethyl iso-allocholate, caryophyllene oxide, campesterol, epiglobulol, cholestan-3-ol, 2-methylene-, (3á,5à)-, dasycarpidan-1-methanol, acetate (ester) and oleic acid, eicosyl ester. The FT-IR analysis of HMEL of C. lancifolius showed a unique peak at 3184, 2413, 1657 cm-1 representing coumaric acid, chlorogenic acid and ferulic acid. The HMEL of C. lancifolius was actively inhibiting the proliferation of breast cancer cells MCF-7 ATCC at the concentration of 72.66 ± 8.21 µg/ml as IC50 value. The HMEL of C. lancifolius also revealed a good spectrum of activity against Gram-positive and Gram-negative bacterial cultures screened in this work. The activity observed has shown more or less similar effects against screened bacteria. However, the magnitude of potentiality was significantly lesser compared to standard ciprofloxacin disc at p< 0.001 level (99% confidence intervals). Furthermore, the study demonstrating the bioactive compounds can be isolated from the leaves of C. lancifolius.
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Affiliation(s)
- S S Moni
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - M F Alam
- Jazan University, College of Pharmacy, Department of Pharmacology and Toxicology, Jazan, Saudi Arabia
| | - M H Sultan
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - H A Makeen
- Jazan University, College of Pharmacy, Clinical Pharmacy Department, Pharmacy Practice Research Unit, Jazan, Saudi Arabia.,Jazan University, Ethnopharmacology Research Unit, Jazan, Saudi Arabia
| | - H A Alhazmi
- Jazan University, Substance Abuse and Toxicology Research Centre, Jazan, Saudi Arabia.,Jazan University, College of Pharmacy, Department of Pharmaceutical Chemistry, Jazan, Saudi Arabia
| | - S Mohan
- Jazan University, Substance Abuse and Toxicology Research Centre, Jazan, Saudi Arabia
| | - Md S Alam
- Jazan University, College of Pharmacy, Department of Pharmaceutical Chemistry, Jazan, Saudi Arabia
| | - Z Ur Rehman
- Jazan University, College of Pharmacy, Department of Pharmaceutical Chemistry, Jazan, Saudi Arabia
| | - A Jabeen
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - S Sanobar
- Jazan University, College of Pharmacy, Department of Pharmacognosy, Jazan, Saudi Arabia
| | - M E Elmobark
- Jazan University, College of Pharmacy, Department of Pharmaceutics, Jazan, Saudi Arabia
| | - R Siddiqui
- Jazan University, College of Pharmacy, Department of Pharmacology and Toxicology, Jazan, Saudi Arabia
| | - T Anwer
- Jazan University, College of Pharmacy, Department of Pharmacology and Toxicology, Jazan, Saudi Arabia
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16
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Nagi K, Gupta I, Jurdi N, Jabeen A, Yasmeen A, Batist G, Vranic S, Al-Moustafa AE. High-risk human papillomaviruses and Epstein-Barr virus in breast cancer in Lebanese women and their association with tumor grade: a molecular and tissue microarray study. Cancer Cell Int 2021; 21:308. [PMID: 34112166 PMCID: PMC8194154 DOI: 10.1186/s12935-021-02009-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/03/2021] [Indexed: 12/11/2022] Open
Abstract
Background High-risk human papillomaviruses (HPVs) are present and can cooperate with Epstein–Barr virus (EBV) to initiate and/or enhance the progression of several types of human carcinomas including cervical as well as head and neck; in parallel, it has been recently pointed out that these oncoviruses can be detected in human breast cancers. Thus, we herein explored the presence/co-presence of high-risk HPVs and EBV in breast cancer in Lebanese women. Methods A cohort of 102 breast cancer samples and 14 normal breast tissues were assessed for the presence of HPVs and EBV. Polymerase chain reaction (PCR) and immunohistochemistry (IHC) analysis in addition to tissue microarray (TMA) platform were used in this study. Results We found the presence of HPV in 66/102 (65%) of our samples, while EBV is present in 41/102 (40%) of the cohort. Additionally, our data showed that high-risk HPV types (52, 35, 58, 45, 16 and 51) are the most frequent in breast cancer in Lebanese women. Meanwhile, we report that high-risk HPVs and EBV are co-present in 30/102 (29%) of the samples; more significantly, our results indicate that their co-presence is associated with tumor grade (p = 0.03). Conclusion Our data revealed that HPVs and EBV are present/co-present in human breast cancer where they may play an important role in its development and/or progression; thus, we believe that further investigations are essential to confirm and elucidate the presence/co-presence of these oncoviruses and the underlying mechanisms of their interaction in breast carcinogenesis.
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Affiliation(s)
- Karim Nagi
- College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar. .,Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, PO Box 2713, Doha, Qatar.
| | - Ishita Gupta
- College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, PO Box 2713, Doha, Qatar.,Biomedical Research Centre, QU Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Nawaf Jurdi
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ayesha Jabeen
- College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, PO Box 2713, Doha, Qatar.,Biomedical Research Centre, QU Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Amber Yasmeen
- Segal Cancer Centre, Lady Davis Institute for Medical Research/JGH, McGill University, Montreal, QC, H3A 0G4, Canada
| | - Gerald Batist
- Segal Cancer Centre, Lady Davis Institute for Medical Research/JGH, McGill University, Montreal, QC, H3A 0G4, Canada.,Oncology Department, McGill University, Montreal, QC, H3A 0G4, Canada
| | - Semir Vranic
- College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Ala-Eddin Al-Moustafa
- College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar. .,Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, PO Box 2713, Doha, Qatar. .,Biomedical Research Centre, QU Health, Qatar University, PO Box 2713, Doha, Qatar.
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17
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Gupta I, Jabeen A, Vranic S, Al Moustafa AE, Al-Thawadi H. Oncoproteins of High-Risk HPV and EBV Cooperate to Enhance Cell Motility and Invasion of Human Breast Cancer Cells via Erk1/Erk2 and β-Catenin Signaling Pathways. Front Oncol 2021; 11:630408. [PMID: 33777781 PMCID: PMC7994530 DOI: 10.3389/fonc.2021.630408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/08/2021] [Indexed: 12/13/2022] Open
Abstract
Breast cancer is a leading cause of death in women around the world. Most breast cancer-related deaths are a result of complications from the metastatic spread. Several recent studies reported that high-risk human papillomaviruses (HPVs) and Epstein-Barr virus (EBV) are co-presented in different types of human carcinomas including breast; however, the cooperative effects between high-risk HPVs and EBV oncoproteins in human breast cancer have not been investigated yet. Thus, we herein explored the cooperation outcome between E6/E7 and latent membrane protein 1 (LMP1) oncoproteins of high-risk HPV type 16 and EBV, respectively, in two human breast cancer cell lines, MCF7 and MDA-MB-231. Our data revealed that the cooperation of E6/E7 and LMP1 oncoproteins stimulates cell proliferation and deregulates cell cycle progression of human breast cancer and normal mammary cells; in parallel, we noted that E6/E7/LMP1 incite colony formation of both breast cancer cell lines but not normal cells. More significantly, our results point out that the co-expression of E6/E7 and LMP1 oncoproteins enhances cell motility and invasion of MCF7 and MDA-MB-231 cell lines; this is accompanied by deregulation of epithelial-mesenchymal transition biomarkers including E-cadherin, β-catenin, fascin, and vimentin. The molecular pathway analysis of HPV and EBV oncoproteins cooperation shows that it can enhance the phosphorylation of extracellular signal-regulated kinases (Erk1/Erk2) in addition to β-catenin, which could be behind the effect of this cooperation in our cell models. The study clearly suggests that high-risk HPV and EBV coinfection can play an important role in breast cancer progression via Erk1/Erk2 and β-catenin signaling pathways.
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Affiliation(s)
- Ishita Gupta
- College of Medicine, Qatar University Health, Qatar University, Doha, Qatar
- Biomedical and Pharmaceutical Research Unit, Qatar University Health, Qatar University, Doha, Qatar
- Biomedical Research Centre, Qatar University, Doha, Qatar
| | - Ayesha Jabeen
- College of Medicine, Qatar University Health, Qatar University, Doha, Qatar
- Biomedical and Pharmaceutical Research Unit, Qatar University Health, Qatar University, Doha, Qatar
- Biomedical Research Centre, Qatar University, Doha, Qatar
| | - Semir Vranic
- College of Medicine, Qatar University Health, Qatar University, Doha, Qatar
- Biomedical and Pharmaceutical Research Unit, Qatar University Health, Qatar University, Doha, Qatar
| | - Ala-Eddin Al Moustafa
- College of Medicine, Qatar University Health, Qatar University, Doha, Qatar
- Biomedical and Pharmaceutical Research Unit, Qatar University Health, Qatar University, Doha, Qatar
- Biomedical Research Centre, Qatar University, Doha, Qatar
| | - Hamda Al-Thawadi
- College of Medicine, Qatar University Health, Qatar University, Doha, Qatar
- Biomedical and Pharmaceutical Research Unit, Qatar University Health, Qatar University, Doha, Qatar
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18
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Kheraldine H, Gupta I, Alhussain H, Jabeen A, Akhtar S, Al Moustafa AE, Rachid O. Naked Poly(amidoamine) Dendrimer Nanoparticles Exhibit Intrinsic Embryotoxicity During the Early Stages of Normal Development. J Biomed Nanotechnol 2021; 16:1454-1462. [PMID: 33422157 DOI: 10.1166/jbn.2020.2981] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To investigate the impact of poly(amidoamine) dendrimers (PAMAMs) in the embryo, we explored the outcome of different generations (G₄ and G6) on the early stages of embryogenesis using the chicken embryo as a model. We also monitored their effect on angiogenesis in the chorioallantoic membrane (CAM). Our data revealed that cationic PAMAMs provoke substantial embryotoxicity, as they significantly induce death (up to 50%, p < 0 05) and inhibit angiogenesis of the CAM (up to 30%, p < 0 05) in a generation-dependent manner in comparison to controls and other types of PAMAMs (anionic and neutral). Moreover, cationic PAMAMs alter the expression of genes related to cell survival, cell cycle, proliferation, transcription factor, apoptosis, and angiogenesis, as shown by RT-PCR analysis. Our data suggest that PAMAM dendrimers exhibit intrinsic toxicity in embryos at the early stages and inhibits angiogenesis of the CAM. Thus, future studies are necessary to illustrate the exact mechanism of PAMAM dendrimers in embryotoxicity.
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Abstract
Background: The current study aimed at investigating the manifestation and prevalence of the commonly reported psychosocial reactions in the university students following the onset of COVID-19 pandemic. Methods: This cross-sectional survey was carried out during April to May, 2020 in the city of Lahore. Based on the interviews and presenting problems of thirty-nine self-referred students to student counselling service center, a list of twenty-seven self-report measure was presented through an online cross-sectional survey of 510 students enrolled in a private institute. The age range of the participants was between 17-26 years (M, 21.86; SD, 2.94). Results: The results showed that the most frequently reported reactions by university students during COVID-19 is restricted daily routine (92%), preoccupation with cleanliness (86%), feeling uncertain about future (85%), feeling bored (84%) and low mood (84%). The least frequently reported reaction was financial crisis (48%). The findings further showed that 18% of the participants had mild, 34% had moderate, 29% severe and 19% very severe level of problems. Conclusions: The finding revealed that university students have significantly affected by this pandemic which need attention from mental health professionals.
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Affiliation(s)
- Zahid Mahmood
- Zahid Mahmood, PhD. Department of Clinical Psychology, under School of Professional Psychology, University of Management and Technology, Lahore, Pakistan
| | - Sadia Saleem
- Sadia Saleem, PhD. Department of Clinical Psychology, under School of Professional Psychology, University of Management and Technology, Lahore, Pakistan
| | - Sara Subhan
- Sara Subhan, PhD. Department of Clinical Psychology, under School of Professional Psychology, University of Management and Technology, Lahore, Pakistan
| | - Ayesha Jabeen
- Ayesha Jabeen, Department of Clinical Psychology, under School of Professional Psychology, University of Management and Technology, Lahore, Pakistan
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20
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Al-Asmakh M, Bawadi H, Hamdan M, Gupta I, Kheraldine H, Jabeen A, Rizeq B, Al Moustafa AE. Dasatinib and PD-L1 inhibitors provoke toxicity and inhibit angiogenesis in the embryo. Biomed Pharmacother 2020; 134:111134. [PMID: 33341672 DOI: 10.1016/j.biopha.2020.111134] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 12/20/2022] Open
Abstract
Dasatinib is a targeted cancer therapy, while programmed death ligand 1 (PD-L1) inhibitors are a form of immune checkpoint therapy used to treat various types of cancers. Several studies showed the potential efficacy of these drugs in the management of triple-negative breast cancer- an aggressive subtype of breast cancer, which can develop during pregnancy. Nevertheless, side effects of Dasatinib (DA) and PD-L1 drugs during pregnancy, especially in the early stages of embryogenesis are not explored yet. The aim of this study is to assess the individual and combined toxicity of DA and PD-L1 inhibitors during the early stages of embryogenesis and to evaluate their effect(s) on angiogenesis using the chorioallantoic membrane (CAM) model of the embryo. Our results show that embryos die at greater rates after exposure to DA and PD-L1 inhibitors as compared to their matched controls. Moreover, treatment with these drugs significantly inhibits angiogenesis of the CAM. To further elucidate key regulator genes of embryotoxicity induced by the actions of PD-L1 and DA, an RT-PCR analysis was performed for seven target genes that regulate cell proliferation, angiogenesis, and survival (ATF3, FOXA2, MAPRE2, RIPK1, INHBA, SERPINA4, and VEGFC). Our data revealed that these genes are significantly deregulated in the brain, heart, and liver tissues of exposed embryos, compared to matched control tissues. Nevertheless, further studies are necessary to evaluate the effects of these anti breast cancer drugs and elucidate their role during pregnancy.
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Affiliation(s)
- Maha Al-Asmakh
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; Biomedical Research Centre, Qatar University, Doha, P.O. Box 2713, Qatar; Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Hiba Bawadi
- Department of Nutrition, College of Health Sciences, QU Health, Qatar University, P. O. Box 2713, Doha, Qatar.
| | - Munia Hamdan
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Health and Life Sciences, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
| | - Ishita Gupta
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Hadeel Kheraldine
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Ayesha Jabeen
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Balsam Rizeq
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Ala-Eddin Al Moustafa
- Biomedical Research Centre, Qatar University, Doha, P.O. Box 2713, Qatar; Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; Oncology Department, Faculty of Medicine, McGill University, Montreal, QC, Canada.
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21
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Ali LM, Pitchai FNN, Vivet-Boudou V, Chameettachal A, Jabeen A, Pillai VN, Mustafa F, Marquet R, Rizvi TA. Role of Purine-Rich Regions in Mason-Pfizer Monkey Virus (MPMV) Genomic RNA Packaging and Propagation. Front Microbiol 2020; 11:595410. [PMID: 33250884 PMCID: PMC7674771 DOI: 10.3389/fmicb.2020.595410] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 09/25/2020] [Indexed: 12/13/2022] Open
Abstract
A distinguishing feature of the Mason-Pfizer monkey virus (MPMV) packaging signal RNA secondary structure is a single-stranded purine-rich sequence (ssPurines) in close vicinity to a palindromic stem loop (Pal SL) that functions as MPMV dimerization initiation site (DIS). However, unlike other retroviruses, MPMV contains a partially base-paired repeat sequence of ssPurines (bpPurines) in the adjacent region. Both purine-rich sequences have earlier been proposed to act as potentially redundant Gag binding sites to initiate the process of MPMV genomic RNA (gRNA) packaging. The objective of this study was to investigate the biological significance of ssPurines and bpPurines in MPMV gRNA packaging by systematic mutational and biochemical probing analyses. Deletion of either ssPurines or bpPurines individually had no significant effect on MPMV gRNA packaging, but it was severely compromised when both sequences were deleted simultaneously. Selective 2′ hydroxyl acylation analyzed by primer extension (SHAPE) analysis of the mutant RNAs revealed only mild effects on structure by deletion of either ssPurines or bpPurines, while the structure was dramatically affected by the two simultaneous deletions. This suggests that ssPurines and bpPurines play a redundant role in MPMV gRNA packaging, probably as Gag binding sites to facilitate gRNA capture and encapsidation. Interestingly, the deletion of bpPurines revealed an additional severe defect on RNA propagation that was independent of the presence or absence of ssPurines or the gRNA structure of the region. These findings further suggest that the bpPurines play an additional role in the early steps of MPMV replication cycle that is yet to be identified.
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Affiliation(s)
- Lizna Mohamed Ali
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Fathima Nuzra Nagoor Pitchai
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Valérie Vivet-Boudou
- Architecture et Réactivité de l'ARN, UPR 9002, IBMC, CNRS, Université de Strasbourg, Strasbourg, France
| | - Akhil Chameettachal
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Ayesha Jabeen
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Vineeta N Pillai
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Farah Mustafa
- Department of Biochemistry, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.,Zayed Center for Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Roland Marquet
- Architecture et Réactivité de l'ARN, UPR 9002, IBMC, CNRS, Université de Strasbourg, Strasbourg, France
| | - Tahir A Rizvi
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.,Zayed Center for Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
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22
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Gupta I, Jabeen A, Al-Sarraf R, Farghaly H, Vranic S, Sultan AA, Al Moustafa AE, Al-Thawadi H. The co-presence of high-risk human papillomaviruses and Epstein-Barr virus is linked with tumor grade and stage in Qatari women with breast cancer. Hum Vaccin Immunother 2020; 17:982-989. [PMID: 33006291 PMCID: PMC8018460 DOI: 10.1080/21645515.2020.1802977] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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] [Indexed: 01/22/2023] Open
Abstract
High-risk human papillomaviruses (HPV) can be present and cooperate with Epstein–Barr virus (EBV) to promote the onset and/or progression of various cancers including cervical, breast, head and neck as well as colorectal. In this investigation, we explored the co-prevalence of high-risk HPV and EBV in 74 breast cancer tissues from Qatari women using polymerase chain reaction. We found that high-risk HPV and EBV are present in 48/74 (65%) and 36/74 (49%) of the cases, respectively. While we noted that the presence of HPV presence is associated with triple-negative breast cancer (TNBC) (p = .008), however, the presence of EBV did not correlate with any breast cancer subgroup. Moreover, our data revealed that high-risk HPV and EBV are co-present in 35/74 (47%) of the samples and their co-presence is significantly associated with tumor grade (p = .04) and tumor stage (p = .04). These data indicate that HPV and EBV are commonly co-present in breast cancer and their association could be linked with a more aggressive tumor phenotype. Thus, further investigations are essential to understand the underlying mechanisms of HPV and EBV cooperation in breast carcinogenesis.
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Affiliation(s)
- Ishita Gupta
- College of Medicine, QU Health, Qatar University, Doha, Qatar.,Biomedical Research Centre, QU Health, Qatar University, Doha, Qatar
| | - Ayesha Jabeen
- College of Medicine, QU Health, Qatar University, Doha, Qatar.,Biomedical Research Centre, QU Health, Qatar University, Doha, Qatar
| | - Reem Al-Sarraf
- Department of Pathology, Hamad General Hospital, Doha, Qatar
| | - Hanan Farghaly
- Department of Pathology, Hamad General Hospital, Doha, Qatar
| | - Semir Vranic
- College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Ali A Sultan
- Department of Microbiology and Immunology, Weill Cornell Medicine - Qatar, Doha, Qatar
| | - Ala-Eddin Al Moustafa
- College of Medicine, QU Health, Qatar University, Doha, Qatar.,Biomedical Research Centre, QU Health, Qatar University, Doha, Qatar
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23
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Jabeen A, Sharma A, Gupta I, Kheraldine H, Vranic S, Al Moustafa AE, Al Farsi HF. Elaeagnus angustifolia Plant Extract Inhibits Epithelial-Mesenchymal Transition and Induces Apoptosis via HER2 Inactivation and JNK Pathway in HER2-Positive Breast Cancer Cells. Molecules 2020; 25:E4240. [PMID: 32947764 PMCID: PMC7570883 DOI: 10.3390/molecules25184240] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 08/18/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 12/29/2022] Open
Abstract
Elaeagnus angustifolia (EA) is a medicinal plant used for treating several human diseases in the Middle East. Meanwhile, the outcome of EA extract on HER2-positive breast cancer remains nascent. Thus, we herein investigated the effects of the aqueous EA extract obtained from the flowers of EA on two HER2-positive breast cancer cell lines, SKBR3 and ZR75-1. Our data revealed that EA extract inhibits cell proliferation and deregulates cell-cycle progression of these two cancer cell lines. EA extract also prevents the progression of epithelial-mesenchymal transition (EMT), an important event for cancer invasion and metastasis; this is accompanied by upregulations of E-cadherin and β-catenin, in addition to downregulations of vimentin and fascin, which are major markers of EMT. Thus, EA extract causes a drastic decrease in cell invasion ability of SKBR3 and ZR75-1 cancer cells. Additionally, we found that EA extract inhibits colony formation of both cell lines in comparison with their matched control. The molecular pathway analysis of HER2 and JNK1/2/3 of EA extract exposed cells revealed that it can block HER2 and JNK1/2/3 activities, which could be the major molecular pathway behind these events. Our findings implicate that EA extract may possess chemo-preventive effects against HER2-positive breast cancer via HER2 inactivation and specifically JNK1/2/3 signaling pathways.
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Affiliation(s)
- Ayesha Jabeen
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.J.); (A.S.); (I.G.); (H.K.); (S.V.)
- Biomedical Research Centre, Qatar University, Doha P.O. Box 2713, Qatar
| | - Anju Sharma
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.J.); (A.S.); (I.G.); (H.K.); (S.V.)
| | - Ishita Gupta
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.J.); (A.S.); (I.G.); (H.K.); (S.V.)
- Biomedical Research Centre, Qatar University, Doha P.O. Box 2713, Qatar
| | - Hadeel Kheraldine
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.J.); (A.S.); (I.G.); (H.K.); (S.V.)
- Biomedical Research Centre, Qatar University, Doha P.O. Box 2713, Qatar
- College of Pharmacy, Qatar University, Doha P.O. Box 2713, Qatar
| | - Semir Vranic
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.J.); (A.S.); (I.G.); (H.K.); (S.V.)
| | - Ala-Eddin Al Moustafa
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.J.); (A.S.); (I.G.); (H.K.); (S.V.)
- Biomedical Research Centre, Qatar University, Doha P.O. Box 2713, Qatar
| | - Halema F. Al Farsi
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.J.); (A.S.); (I.G.); (H.K.); (S.V.)
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24
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Riaz S, Abdulrahman N, Uddin S, Jabeen A, Gadeau AP, Fliegel L, Mraiche F. Anti-hypertrophic effect of Na +/H + exchanger-1 inhibition is mediated by reduced cathepsin B. Eur J Pharmacol 2020; 888:173420. [PMID: 32781168 DOI: 10.1016/j.ejphar.2020.173420] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 12/20/2022]
Abstract
Previous studies have established the role of Na+/H+ exchanger isoform-1 (NHE1) and cathepsin B (Cat B) in the development of cardiomyocyte hypertrophy (CH). Both NHE1 and Cat B are activated under acidic conditions suggesting that their activities might be interrelated. The inhibition of NHE1 has been demonstrated to reduce cardiac hypertrophy but the mechanism that contributes to the anti-hypertrophic effect of NHE1 inhibition still remains unclear. H9c2 cardiomyoblasts were stimulated with Angiotensin (Ang) II in the presence and absence of N-[2-methyl-4,5-bis(methylsulphonyl)-benzoyl]-guanidine, hydrochloride (EMD, EMD 87580), an NHE1 inhibitor or CA-074Me, a Cat B inhibitor, and various cardiac hypertrophic parameters, namely cell surface area, protein content and atrial natriuretic peptide (ANP) mRNA were analyzed. EMD significantly suppressed markers of cardiomyocyte hypertrophy and inhibited Ang II stimulated Cat B protein and gene expression. Cat B is located within the acidic environment of lysosomes. Cat B proteases are released into the cytoplasm upon disintegration of the lysosomes. EMD or CA-074Me prevented the dispersal of the lysosomes induced by Ang II and reduced the ratio of LC3-II to LC3-I, a marker of autophagy. Moreover, Cat B protein expression and MMP-9 activity in the extracellular space were significantly attenuated in the presence of EMD or CA-074Me. Our study demonstrates a novel mechanism for attenuation of the hypertrophic phenotype by NHE1 inhibition that is mediated by a regression in Cat B. The inhibition of Cat B via EMD or CA-074Me attenuates the autosomal-lysosomal pathway and MMP-9 activation.
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Affiliation(s)
- Sadaf Riaz
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar; Hamad Medical Corporation, Doha, Qatar
| | - Nabeel Abdulrahman
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar; Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ayesha Jabeen
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | | | | | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar.
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Gupta I, Al Farsi H, Jabeen A, Skenderi F, Al-Thawadi H, AlAhmad YM, Abdelhafez I, Al Moustafa AE, Vranic S. High-Risk Human Papillomaviruses and Epstein-Barr Virus in Colorectal Cancer and Their Association with Clinicopathological Status. Pathogens 2020; 9:E452. [PMID: 32521661 PMCID: PMC7350373 DOI: 10.3390/pathogens9060452] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/21/2020] [Accepted: 05/28/2020] [Indexed: 02/07/2023] Open
Abstract
Colorectal cancer (CRC) is a common malignancy with a high mortality rate worldwide. It is a complex, multifactorial disease that is strongly impacted by both hereditary and environmental factors. The role of microbes (e.g., viruses) in the pathogenesis of CRC is poorly understood. In the current study, we explored the status of high-risk human papillomaviruses (HPV) and Epstein-Barr virus (EBV) in a well-defined CRC cohort using immunohistochemistry and polymerase chain reaction assays. Our data showed that high-risk HPVs were common (~80%) and EBV had a low presence (14-25%) in the CRC samples. The most common high-risk HPVs are HPV16, 31, 18, 51, 52 and 45 genotypes. The co-presence of high-risk HPV and EBV was observed in ~16% of the sample population without any significant association with the clinicopathological variables. We conclude that high-risk HPVs are very prevalent in CRC samples while EBV positivity is relatively low. The co-expression of the two viruses was observed in a minority of cases and without any correlation with the studied parameters. Further studies are necessary to confirm the clinical relevance and potential therapeutic (preventive) effects of the observations reported herein.
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Affiliation(s)
- Ishita Gupta
- College of Medicine, QU Health, Qatar University, 2713 Doha, Qatar; (I.G.); (H.A.F.); (A.J.); (H.A.-T.); (Y.M.A.); (I.A.)
| | - Halema Al Farsi
- College of Medicine, QU Health, Qatar University, 2713 Doha, Qatar; (I.G.); (H.A.F.); (A.J.); (H.A.-T.); (Y.M.A.); (I.A.)
| | - Ayesha Jabeen
- College of Medicine, QU Health, Qatar University, 2713 Doha, Qatar; (I.G.); (H.A.F.); (A.J.); (H.A.-T.); (Y.M.A.); (I.A.)
| | - Faruk Skenderi
- Department of Pathology, Clinical Center, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina;
| | - Hamda Al-Thawadi
- College of Medicine, QU Health, Qatar University, 2713 Doha, Qatar; (I.G.); (H.A.F.); (A.J.); (H.A.-T.); (Y.M.A.); (I.A.)
| | - Yaman M. AlAhmad
- College of Medicine, QU Health, Qatar University, 2713 Doha, Qatar; (I.G.); (H.A.F.); (A.J.); (H.A.-T.); (Y.M.A.); (I.A.)
| | - Ibrahim Abdelhafez
- College of Medicine, QU Health, Qatar University, 2713 Doha, Qatar; (I.G.); (H.A.F.); (A.J.); (H.A.-T.); (Y.M.A.); (I.A.)
| | - Ala-Eddin Al Moustafa
- College of Medicine, QU Health, Qatar University, 2713 Doha, Qatar; (I.G.); (H.A.F.); (A.J.); (H.A.-T.); (Y.M.A.); (I.A.)
- Biomedical Research Centre, Qatar University, 2713 Doha, Qatar
| | - Semir Vranic
- College of Medicine, QU Health, Qatar University, 2713 Doha, Qatar; (I.G.); (H.A.F.); (A.J.); (H.A.-T.); (Y.M.A.); (I.A.)
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Gupta I, Nasrallah GK, Sharma A, Jabeen A, Smatti MK, Al-Thawadi HA, Sultan AA, Alkhalaf M, Vranic S, Moustafa AEA. Co-prevalence of human Papillomaviruses (HPV) and Epstein-Barr virus (EBV) in healthy blood donors from diverse nationalities in Qatar. Cancer Cell Int 2020; 20:107. [PMID: 32265596 PMCID: PMC7118960 DOI: 10.1186/s12935-020-01190-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 08/22/2019] [Accepted: 03/27/2020] [Indexed: 12/31/2022] Open
Abstract
Background Infections by both human oncoviruses, human Papillomaviruses (HPV) and Epstein–Barr virus (EBV) are very common in the adult human population and are associated with various malignancies. While HPV is generally transmitted sexually or via skin-to-skin contact, EBV is frequently transmitted by oral secretions, blood transfusions and organ transplants. This study aims to determine the prevalence and circulating genotypes of HPV and EBV in healthy blood donors in Qatar. Methods We explored the co-prevalence of high-risk HPVs and EBV in 378 males and only 7 females blood donors of different nationalities (mainly from Qatar, Egypt, Syria, Jordan, Pakistan, and India) residing in Qatar, using polymerase chain reaction (PCR). DNA was extracted from the buffy coat and genotyping was performed using PCR and nested-PCR targeting E6 and E7 as well as LMP-1 of HPV and EBV, respectively. Results We found that from the total number of 385 cases of healthy blood donors studied, 54.8% and 61% of the samples are HPVs and EBV positive, respectively. Additionally, our data revealed that the co-presence of both high-risk HPVs and EBV is 40.4% of the total samples. More significantly, this study pointed out for the first time that the most frequent high-risk HPV types in Qatar are 59 (54.8%), 31 (53.7%), 52 (49.1%), 51 (48.6%), 58 (47%) and 35 (45.5%), while the most commonly expressed low-risk HPV types are 53 (50.6%), 11 (45.5), 73 (41.7%) and 6 (41.3%), with all the cases showing multiple HPVs infection. Conclusion In this study, we demonstrated for the first time that HPV and EBV are commonly co-present in healthy blood donors in Qatar. On the other hand, it is important to highlight that these oncoviruses can also be co-present in several types of human cancers where they can cooperate in the initiation and/or progression of these cancers. Therefore, more studies regarding the co-presence of these oncoviruses and their interaction are necessary to understand their cooperative role in human diseases.
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Affiliation(s)
- Ishita Gupta
- 1College of Medicine, QU Health, Qatar University, Doha, Qatar
| | | | - Anju Sharma
- 1College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Ayesha Jabeen
- 1College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Maria K Smatti
- 2Biomedical Research Centre, Qatar University, Doha, Qatar
| | | | | | - Moussa Alkhalaf
- 4Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Semir Vranic
- 1College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Ala-Eddin Al Moustafa
- 1College of Medicine, QU Health, Qatar University, Doha, Qatar.,2Biomedical Research Centre, Qatar University, Doha, Qatar
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Jabeen A, Reeder B, Svistunenko D, Hisaindee S, Ashraf S, Al-Zuhair S, Battah S. Effect of the Photodynamic Therapy Applications with Potent Microalgae Constituents on Several Types of Tumor. Ing Rech Biomed 2019. [DOI: 10.1016/j.irbm.2018.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Hanumunthadu D, van Dijk EHC, Dumpala S, Rajesh B, Jabeen A, Jabeen A, Ansari M, Mehta P, Shah S, Sarvaiya C, Meyerle C, Wu L, Banker A, Boon CJ, Chhablani J. Evaluation of Choroidal Layer Thickness in Central Serous Chorioretinopathy. J Ophthalmic Vis Res 2019; 14:164-170. [PMID: 31114653 PMCID: PMC6504723 DOI: 10.4103/jovr.jovr_152_17] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 11/04/2022] Open
Abstract
Purpose To evaluate medium and large choroidal vessel layer thickness (MCVT and LCVT, respectively) in eyes with acute and chronic central serous chorioretinopathy (CSC) in comparison with age-matched controls. Methods The study included 96 eyes of 96 patients with CSC, including 53 eyes with acute CSC, 43 eyes with chronic CSC, and 30 eyes of 30 age-matched normal subjects. Manual measurements of subfoveal choroidal thickness (SFCT), MCVT, and LCVT at subfoveal and 750 μm nasal and temporal to the fovea locations were made on enhanced depth imaging optical coherence tomography (EDI-OCT) of the macula in all subjects using ImageJ software (National Institutes of Health, Bethesda, MD, USA). Results SFCT in acute CSC was significantly larger than that in healthy eyes (P = 0.0001). SFCT in acute CSC did not differ significantly from that in chronic CSC eyes. Subfoveal LCVT and MCVT in acute CSC eyes were greater than those in healthy eyes (P = 0.02 and P = 0.03, respectively). Mean SFCT and MCVT in chronic CSC eyes were significantly larger than those in control eyes (P = 0.01 and P = 0.04, respectively). No significant difference in LCVT was observed between chronic and control eyes. Conclusion Choroidal vasculature is altered in both acute and chronic CSC. SFCT, MCVT, and LCVT are higher in eyes with acute CSC. The thickening of medium choroidal vessels is still detectable in chronic CSC compared to control eyes.
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Affiliation(s)
| | - Elon H C van Dijk
- Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands
| | - Sunila Dumpala
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, Hyderabad Eye Research Foundation, Kallam Anji Reddy Campus, L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Bindu Rajesh
- Department of Ophthalmology, Giridhar Eye Institute, Kochi, Kerala, India
| | - Ayesha Jabeen
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, Hyderabad Eye Research Foundation, Kallam Anji Reddy Campus, L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Asiya Jabeen
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, Hyderabad Eye Research Foundation, Kallam Anji Reddy Campus, L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Momin Ansari
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, Hyderabad Eye Research Foundation, Kallam Anji Reddy Campus, L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Pooja Mehta
- Retina Division, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Shilpi Shah
- Banker's Retina Clinic and Laser Centre, 5 Subhash Society, Ahmedabad, Gujarat, India
| | - Chintan Sarvaiya
- Banker's Retina Clinic and Laser Centre, 5 Subhash Society, Ahmedabad, Gujarat, India
| | - Catherine Meyerle
- Retina Division, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lihteh Wu
- Asociados de Mácula Vitreo y Retina de Costa Rica, Apdo 144-1225 Plaza Mayor, San Jose, Costa Rica
| | - Alay Banker
- Banker's Retina Clinic and Laser Centre, 5 Subhash Society, Ahmedabad, Gujarat, India
| | - Camiel J Boon
- Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jay Chhablani
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, Hyderabad Eye Research Foundation, Kallam Anji Reddy Campus, L V Prasad Eye Institute, Hyderabad, Telangana, India
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Mustafa F, Vivet-Boudou V, Jabeen A, Ali LM, Kalloush RM, Marquet R, Rizvi TA. The bifurcated stem loop 4 (SL4) is crucial for efficient packaging of mouse mammary tumor virus (MMTV) genomic RNA. RNA Biol 2018; 15:1047-1059. [PMID: 29929424 PMCID: PMC6161677 DOI: 10.1080/15476286.2018.1486661] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Packaging the mouse mammary tumor virus (MMTV) genomic RNA (gRNA) requires the entire 5' untranslated region (UTR) in conjunction with the first 120 nucleotides of the gag gene. This region includes several palindromic (pal) sequence(s) and stable stem loops (SLs). Among these, stem loop 4 (SL4) adopts a bifurcated structure consisting of three stems, two apical loops, and an internal loop. Pal II, located in one of the apical loops, mediates gRNA dimerization, a process intricately linked to packaging. We thus hypothesized that the bifurcated SL4 structure could constitute the major gRNA packaging determinant. To test this hypothesis, the two apical loops and the flanking sequences forming the bifurcated SL4 were individually mutated. These mutations all had deleterious effects on gRNA packaging and propagation. Next, single and compensatory mutants were designed to destabilize then recreate the bifurcated SL4 structure. A structure-function analysis using bioinformatics predictions and RNA chemical probing revealed that mutations that led to the loss of the SL4 bifurcated structure abrogated RNA packaging and propagation, while compensatory mutations that recreated the native SL4 structure restored RNA packaging and propagation to wild type levels. Altogether, our results demonstrate that SL4 constitutes the principal packaging determinant of MMTV gRNA. Our findings further suggest that SL4 acts as a structural switch that can not only differentiate between RNA for translation versus packaging/dimerization, but its location also allows differentiation between spliced and unspliced RNAs during gRNA encapsidation.
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Affiliation(s)
- Farah Mustafa
- a Department of Biochemistry , College of Medicine and Health Sciences, United Arab Emirates University , Al Ain , UAE
| | - Valérie Vivet-Boudou
- b Université de Strasbourg , CNRS, Architecture et Réactivité de l'ARN , Strasbourg , France
| | - Ayesha Jabeen
- c Department of Microbiology & Immunology , College of Medicine and Health Sciences, United Arab Emirates University , Al Ain , UAE
| | - Lizna M Ali
- c Department of Microbiology & Immunology , College of Medicine and Health Sciences, United Arab Emirates University , Al Ain , UAE
| | - Rawan M Kalloush
- c Department of Microbiology & Immunology , College of Medicine and Health Sciences, United Arab Emirates University , Al Ain , UAE
| | - Roland Marquet
- b Université de Strasbourg , CNRS, Architecture et Réactivité de l'ARN , Strasbourg , France
| | - Tahir A Rizvi
- c Department of Microbiology & Immunology , College of Medicine and Health Sciences, United Arab Emirates University , Al Ain , UAE
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Hanumunthadu D, Ruiz-Medrano J, Dumpala S, Jabeen A, Jabeen A, Goud A, Ruiz-Moreno JM, Chhablani J. Comparison of choroidal vessel thickness in children and adult eyes by enhanced-depth imaging optical coherence tomography imaging. Int J Ophthalmol 2018; 11:681-686. [PMID: 29675391 DOI: 10.18240/ijo.2018.04.24] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 02/07/2018] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate choroidal thickness, medium choroidal vessel thickness (MCVT) and large choroidal vessel thickness (LCVT) in normal children and adult subjects. METHODS Manual measurements of subfoveal choroidal thickness (SFCT), MCVT and LCVT at subfoveal and 750 µm nasal and temporal to fovea locations were completed on enhanced-depth imaging optical coherence tomography (EDI-OCT) scans of normal children and adult subjects. RESULTS Fifty adult and fifty-seven child subjects were included in the study (including 80 adult and 103 child eyes). Mean (±SD) SFCT of adult and children eyes in the study was 309.3±95.7 µm and 279.3±50.4 µm respectively. SFCT and subfoveal MCVT in adult eyes were significantly more than children (P=0.01 and P≤0.0001 respectively). CONCLUSION There is choroidal thickening with associated thickening of medium choroidal vessels in adults, suggesting that there is alteration in choroidal vasculature with ageing.
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Affiliation(s)
- Daren Hanumunthadu
- Moorfields Eye Hospital National Health Service Foundation Trust, London, EC1V 2PD, United Kingdom
| | - Jorge Ruiz-Medrano
- Ophthalmology Unit, Clínico San Carlos University Hospital, Madrid 28040, Spain.,Alicante Institute of Ophthalmology, Vissum Corporation, Alicante 03016, Spain
| | - Sunila Dumpala
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, L V Prasad Eye Institute, Hyderabad 500034, India
| | - Ayesha Jabeen
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, L V Prasad Eye Institute, Hyderabad 500034, India
| | - Asiya Jabeen
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, L V Prasad Eye Institute, Hyderabad 500034, India
| | - Abhilash Goud
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, L V Prasad Eye Institute, Hyderabad 500034, India
| | - José M Ruiz-Moreno
- Alicante Institute of Ophthalmology, Vissum Corporation, Alicante 03016, Spain.,Department of Ophthalmology, Castilla La Mancha University, Albacete 13071, Spain
| | - Jay Chhablani
- Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases, L V Prasad Eye Institute, Hyderabad 500034, India
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Alshareef RA, Barteselli G, You Q, Goud A, Jabeen A, Rao HL, Jabeen A, Chhablani J. In vivo evaluation of retinal ganglion cells degeneration in eyes with branch retinal vein occlusion. Br J Ophthalmol 2016; 100:1506-1510. [PMID: 26903520 DOI: 10.1136/bjophthalmol-2015-308106] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 11/19/2015] [Revised: 01/22/2016] [Accepted: 01/25/2016] [Indexed: 01/26/2023]
Abstract
PURPOSE To analyse the topographic changes in retinal ganglion cells (RGCs) in eyes with unilateral naive branch retinal vein occlusion (BRVO) in comparison to normal fellow eyes and to healthy control eyes. METHODS We performed a retrospective analysis of 66 eyes (33 subjects) with naive unilateral BRVO who underwent spectral-domain optical coherence tomography using Cirrus HD-OCT. We also included 67 eyes of 48 age-matched healthy volunteers as control group. Average, minimum and sectoral macular ganglion cell-inner plexiform layer (GCIPL) thickness, macular retinal nerve fibre layer (RNFL) thickness and outer retinal thickness were collected. Comparison of the GCIPL, RNFL and outer retinal thicknesses among study eyes, normal fellow eyes and control groups was performed. RESULTS The average and minimum macular GCIPL thicknesses were constantly and diffusely reduced in BRVO compared with normal fellow eyes and healthy controls (p<0.001 for each GCIPL sector). The average macular RNFL thickness was reduced in BRVO eyes compared with normal fellow eyes (p=0.01) and tended to be lower than controls (p=0.07). The minimum RNFL thickness in eyes with BRVO was significantly reduced when compared with fellow eyes (p<0.001) and control eyes (p<0.001). The average outer retina thickness was thicker in BRVO eyes compared with both fellow eyes (p<0.001) and controls (p<0.001). CONCLUSIONS A significant reduction of the macular GCIPL and RNFL thicknesses was observed in eyes with BRVO. This finding is suggestive of RGCs degeneration; the neuroprotective effect of current therapeutic options might be an important consideration when evaluating treatment strategies and prognosticating visual outcome in BRVO eyes.
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Affiliation(s)
- Rayan A Alshareef
- Department of Ophthalmology, McGill University, Montreal, Quebec, Canada
| | | | - Qisheng You
- Beijing Tongren Eye Center, Beijing, China.,Jacobs Retina Center at Shiley Eye Center, University of California, San Diego, La Jolla, California, USA
| | - Abhilash Goud
- Smt. Kanuri Santhamma Retina Vitreous Centre, L.V. Prasad Eye Institute, Hyderabad, Telangana, India
| | - Asiya Jabeen
- Smt. Kanuri Santhamma Retina Vitreous Centre, L.V. Prasad Eye Institute, Hyderabad, Telangana, India
| | - Harsha L Rao
- VST Glaucoma Center, L.V. Prasad Eye Institute, Hyderabad, Telangana, India.,Narayana Netralaya, Bangalore, Karnataka, India
| | - Ayesha Jabeen
- Smt. Kanuri Santhamma Retina Vitreous Centre, L.V. Prasad Eye Institute, Hyderabad, Telangana, India
| | - Jay Chhablani
- Smt. Kanuri Santhamma Retina Vitreous Centre, L.V. Prasad Eye Institute, Hyderabad, Telangana, India
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Muhandiram N, Jabeen A, Fernàndez N. Bacterial LPS differentially modulates the expression of Myoferlin in trophoblast cells. J Reprod Immunol 2015. [DOI: 10.1016/j.jri.2015.06.007] [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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Malmstrom H, Dellanzo-Savu A, Xiao J, Feng C, Jabeen A, Romero M, Huang J, Ren Y, Yunker MA. Success, clinical performance and patient satisfaction of direct fibre-reinforced composite fixed partial dentures - a two-year clinical study. J Oral Rehabil 2015; 42:906-13. [PMID: 26172283 DOI: 10.1111/joor.12327] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2015] [Indexed: 11/29/2022]
Affiliation(s)
- H. Malmstrom
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - A. Dellanzo-Savu
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - J. Xiao
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - C. Feng
- Department of Biostatistics and Computational Biology; University of Rochester; Rochester NY USA
| | - A. Jabeen
- University of Detroit Mercy School of Dentistry; Detroit MI USA
| | - M. Romero
- Operative Dentistry; Georgia Regents University; Augusta GA USA
| | - J. Huang
- General Dentistry Department; College of Stomatology; Peking University; Beijing China
| | - Y. Ren
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - M. A. Yunker
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
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Ammar Ayass M, Jabeen A, Nowshad G. Prevalence and Correlates of Immunoglobulin IgA Deficiency in Adult Outpatient Population. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1237] [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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Aktar SJ, Vivet-Boudou V, Ali LM, Jabeen A, Kalloush RM, Richer D, Mustafa F, Marquet R, Rizvi TA. Structural basis of genomic RNA (gRNA) dimerization and packaging determinants of mouse mammary tumor virus (MMTV). Retrovirology 2014; 11:96. [PMID: 25394412 PMCID: PMC4264320 DOI: 10.1186/s12977-014-0096-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 10/23/2014] [Indexed: 11/13/2022] Open
Abstract
Background One of the hallmarks of retroviral life cycle is the efficient and specific packaging of two copies of retroviral gRNA in the form of a non-covalent RNA dimer by the assembling virions. It is becoming increasingly clear that the process of dimerization is closely linked with gRNA packaging, and in some retroviruses, the latter depends on the former. Earlier mutational analysis of the 5’ end of the MMTV genome indicated that MMTV gRNA packaging determinants comprise sequences both within the 5’ untranslated region (5’ UTR) and the beginning of gag. Results The RNA secondary structure of MMTV gRNA packaging sequences was elucidated employing selective 2’hydroxyl acylation analyzed by primer extension (SHAPE). SHAPE analyses revealed the presence of a U5/Gag long-range interaction (U5/Gag LRI), not predicted by minimum free-energy structure predictions that potentially stabilizes the global structure of this region. Structure conservation along with base-pair covariations between different strains of MMTV further supported the SHAPE-validated model. The 5’ region of the MMTV gRNA contains multiple palindromic (pal) sequences that could initiate intermolecular interaction during RNA dimerization. In vitro RNA dimerization, SHAPE analysis, and structure prediction approaches on a series of pal mutants revealed that MMTV RNA utilizes a palindromic point of contact to initiate intermolecular interactions between two gRNAs, leading to dimerization. This contact point resides within pal II (5’ CGGCCG 3’) at the 5’ UTR and contains a canonical “GC” dyad and therefore likely constitutes the MMTV RNA dimerization initiation site (DIS). Further analyses of these pal mutants employing in vivo genetic approaches indicate that pal II, as well as pal sequences located in the primer binding site (PBS) are both required for efficient MMTV gRNA packaging. Conclusions Employing structural prediction, biochemical, and genetic approaches, we show that pal II functions as a primary point of contact between two MMTV RNAs, leading to gRNA dimerization and its subsequent encapsidation into the assembling virus particles. The results presented here enhance our understanding of the MMTV gRNA dimerization and packaging processes and the role of structural motifs with respect to RNA-RNA and possibly RNA-protein interactions that might be taking place during MMTV life cycle. Electronic supplementary material The online version of this article (doi:10.1186/s12977-014-0096-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Suriya J Aktar
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates.
| | - Valérie Vivet-Boudou
- Architecture et Réactivité de l'ARN, CNRS, IBMC, Université de Strasbourg, 15 rue René Descartes, 67084, Strasbourg cedex, France.
| | - Lizna M Ali
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates.
| | - Ayesha Jabeen
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates.
| | - Rawan M Kalloush
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates.
| | - Delphine Richer
- Architecture et Réactivité de l'ARN, CNRS, IBMC, Université de Strasbourg, 15 rue René Descartes, 67084, Strasbourg cedex, France.
| | - Farah Mustafa
- Department of Biochemistry, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.
| | - Roland Marquet
- Architecture et Réactivité de l'ARN, CNRS, IBMC, Université de Strasbourg, 15 rue René Descartes, 67084, Strasbourg cedex, France.
| | - Tahir A Rizvi
- Department of Microbiology & Immunology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates.
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Aktar SJ, Jabeen A, Ali LM, Vivet-Boudou V, Marquet R, Rizvi TA. SHAPE analysis of the 5' end of the Mason-Pfizer monkey virus (MPMV) genomic RNA reveals structural elements required for genome dimerization. RNA 2013; 19:1648-1658. [PMID: 24152551 PMCID: PMC3884649 DOI: 10.1261/rna.040931.113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 09/11/2013] [Indexed: 06/02/2023]
Abstract
Earlier genetic and structural prediction analyses revealed that the packaging determinants of Mason Pfizer monkey virus (MPMV) include two discontinuous core regions at the 5' end of its genomic RNA. RNA secondary structure predictions suggested that these packaging determinants fold into several stem-loops (SLs). To experimentally validate this structural model, we employed selective 2' hydroxyl acylation analyzed by primer extension (SHAPE), which examines the flexibility of the RNA backbone at each nucleotide position. Our SHAPE data validated several predicted structural motifs, including U5/Gag long-range interactions (LRIs), a stretch of single-stranded purine (ssPurine)-rich region, and a distinctive G-C-rich palindromic (pal) SL. Minimum free-energy structure predictions, phylogenetic, and in silico modeling analyses of different MPMV strains revealed that the U5 and gag sequences involved in the LRIs differ minimally within strains and maintain a very high degree of complementarity. Since the pal SL forms a helix loop containing a canonical "GC" dyad, it may act as a RNA dimerization initiation site (DIS), enabling the virus to package two copies of its genome. Analyses of wild-type and pal mutant RNAs revealed that disruption of pal sequence strongly affected RNA dimerization. However, when in vitro transcribed trans-complementary pal mutants were incubated together showed RNA dimerization was restored authenticating that the pal loop (5'-CGGCCG-3') functions as DIS.
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Affiliation(s)
- Suriya J. Aktar
- Department of Microbiology and Immunology, College of Medicine and Health Sciences (CMHS), United Arab Emirates University (UAEU), Al Ain, United Arab Emirates
| | - Ayesha Jabeen
- Department of Microbiology and Immunology, College of Medicine and Health Sciences (CMHS), United Arab Emirates University (UAEU), Al Ain, United Arab Emirates
| | - Lizna M. Ali
- Department of Microbiology and Immunology, College of Medicine and Health Sciences (CMHS), United Arab Emirates University (UAEU), Al Ain, United Arab Emirates
| | - Valérie Vivet-Boudou
- Architecture et Réactivité de l'ARN, Université de Strasbourg, IBMC, CNRS, 67084 Strasbourg, France
| | - Roland Marquet
- Architecture et Réactivité de l'ARN, Université de Strasbourg, IBMC, CNRS, 67084 Strasbourg, France
| | - Tahir A. Rizvi
- Department of Microbiology and Immunology, College of Medicine and Health Sciences (CMHS), United Arab Emirates University (UAEU), Al Ain, United Arab Emirates
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Saeed IA, Ali L, Jabeen A, Khasawneh M, Rizvi TA, Ashraf SS. Estrogenic Activities of Ten Medicinal Herbs from the Middle East. J Chromatogr Sci 2012; 51:33-9. [DOI: 10.1093/chromsci/bms101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Jabeen A, Alkhatib S, Hicks C, Uddin T, Hakam S, Jain P, Fernández N. Extra-villous trophoblast cytoskeleton deformation under co-infection with viral and bacterial agents. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.365] [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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Blanch A, Jain P, Jabeen A, Fernandez N. The role of the cytoskeleton in foeto-maternal immunotolerance. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.441] [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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Jabeen A, Laissue P, Jain P, Shakhawat A, Shaikly V, Fernández N. Study of MHC class I molecules associations: Is receptor interaction at the cell-surface important at the feto-maternal interface? J Reprod Immunol 2011. [DOI: 10.1016/j.jri.2011.06.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Jabeen A, Jain P, Laissue P, Suhling K, Levitt J, Shaikly V, Shakhawat A, Fernández N. Physical interactions of HLA-G with MHC class I partner molecules on the surface of two trophoblast cell lines, JEG-3 and ACH-3P, by Förster resonance energy transfer based on fluorescence lifetime measurements. J Reprod Immunol 2010. [DOI: 10.1016/j.jri.2010.08.021] [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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Borgohain R, Meena A, Jabeen A, Kandadai R, Muralikrishna C. P5-17 Autonomic function and quantitative sensory testing (QST) in PD and PD plus syndromes. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60539-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Jabeen A, Munir M, Khalil A, Masood M, Akhter P. Occupational exposure from external radiation used in medical practices in Pakistan by film badge dosimetry. Radiat Prot Dosimetry 2010; 140:396-401. [PMID: 20418331 DOI: 10.1093/rpd/ncq134] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Occupational exposure data of workers due to external sources of radiation in various medical practices such as nuclear medicine (NM), radiotherapy and diagnostic radiology (DR) in Pakistan were collected and analysed. Whole-body doses of workers were measured by film badge dosimetry technique during 2003-2007. Annual average effective dose in NM, radiotherapy and DR varied in the range of 1.39-1.80, 1.05-1.45 and 1.22-1.71 mSv, respectively, during 2003-2007. These values are quite low and well below the annual limit of 20 mSv averaged over a period of 5 consecutive years. Nobody received the radiation dose >50 mSv in any single year over a period of 5 consecutive years; therefore, no overexposure case has been detected. Decreasing trend of annual average dose values in aforementioned categories of work during 2003-2007 indicates the improvement of radiation protection status in medical field in Pakistan.
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Affiliation(s)
- A Jabeen
- Radiation Dosimetry Group, Health Physics Division, Directorate of Systems and Services, Pakistan Institute of Nuclear Science and Technology (PINSTECH), Nilore, Islamabad, Pakistan.
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Khan MS, Siddiqui SZ, Haider S, Zafar A, Zafar F, Khan RN, Afshan K, Jabeen A, Khan MS, Hasan R. Infection control education: impact on ventilator-associated pneumonia rates in a public sector intensive care unit in Pakistan. Trans R Soc Trop Med Hyg 2009; 103:807-11. [PMID: 19342068 DOI: 10.1016/j.trstmh.2009.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2008] [Revised: 03/05/2009] [Accepted: 03/05/2009] [Indexed: 11/17/2022] Open
Abstract
We describe efforts towards introducing infection control (IC) practices and establishment of antimicrobial resistance (AMR) surveillance in a public sector hospital in Pakistan. The study was conducted in an eight-bed intensive care unit. IC principles, introduced through interactive sessions, were used as an intervention and their impact was observed by conducting surveillance for ventilator-associated pneumonia (VAP) before and after the intervention. Respiratory isolates of VAP patients in the period after intervention were screened for AMR, and empiric antibiotic at the time of admission was compared with the antimicrobial sensitivity pattern reported. VAP rates were high in general and declined in the period after intervention, although the difference was not significant. Of 37 VAP patients in the period after intervention, 68% had more than one clinically significant organism isolated from the respiratory specimen. Acinetobacter spp. were isolated from 76% of patients and Pseudomonas aeruginosa from 43%. All Acinetobacter spp. and 72% P. aeruginosa were multidrug resistant. The mean stay of the nosocomially infected patients was significantly higher than for the uninfected group (6.5 vs. 2.1 days, P<0.001). Our study suggests IC education needs to be supplemented by a hospital system that facilitates IC practices and development of surveillance programmes.
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Affiliation(s)
- M S Khan
- Department of Microbiology and Pathology, Aga Khan University, Karachi 74800, Pakistan
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Borgohain R, Reddy R, Panigrahi M, Shanmukhi S, Meena A, Jabeen A. 3.224 Neuropsychological effects of bilateral STN DBS in advanced Parkinson's disease. Parkinsonism Relat Disord 2007. [DOI: 10.1016/s1353-8020(08)70862-9] [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: 10/22/2022]
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Khan S, Khan AK, Banik NG, Jabeen A. Relationship of prolactin and gonadotrophic hormones in regulation of the ovarian function. Bangladesh Med Res Counc Bull 1990; 16:1-16. [PMID: 2119170] [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: 12/30/2022]
Abstract
Circulating concentration of the LH, FSH, prolactin (PRL), oestradiol-17 beta (E2) and progesterone (P) in serum were investigated in women with normal cycles and proven fertility, with irregular cycles and infertility and with primary or secondary amenorrhea in order to understand the relationship of the prolactin and gonadotrophic hormens in regulation of the ovarian function. The results indicate that hyperprolactinemia inhibits the pituitary to release the midcycle LH surge in response to the positive feedback action of the elevated oestrogen at the midcycle. The elevated LH and FSH levels found in the cases of the secondary amenorrhea is the indication of the absence of the steroid negative feedback due to the ovarian failure. Prolactin does not seem to play a role on the manifestation of either primary or secondary amenorrhea.
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Affiliation(s)
- S Khan
- BIRDEM, Diabetic Association of Bangladesh, Dhaka
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