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Sharif A, Shah NA, Rauf A, Hadayat N, Gul A, Nawaz G, Sakhi S, Iqbal M, Khan MR, Shah AA, Azam N, Iftikhar H, Shah SA, Bahadur S, Hussain F, Shuaib M. Ethnomedicinal uses of plants for various diseases in the remote areas of Changa Manga Forest, Pakistan. BRAZ J BIOL 2024; 84:e255916. [DOI: 10.1590/1519-6984.255916] [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: 08/31/2021] [Accepted: 02/01/2022] [Indexed: 11/22/2022] Open
Abstract
Abstract This study aims at reporting the indigenous knowledge of the medicinal flora from the inhabitants of surroundings of the World’s largest artificial planted forest “Changa Manga”, Pakistan. Data were collected by direct interviews and group meetings from 81 inhabitants including 32 local healers having information regarding the use of indigenous medicinal plants over a period of one year. Different statistical tools were applied to analyze the data including Frequency citation (FC), Relative frequency citation (RFC), Use Value, Factor of informants consensus and fidelity level. This study reported 73 plant species belonging to 37 plant families and 46 genera. The majority of plant species belong to compositae family. The most commonly used medicinal plants were P. hysterophorus L., P. dactylifera L., S. indicum L, P. harmala L., P. emblica L., and A. indica A.Juss. The greatest number of species was used to cure gastrointestinal disorders. The highest fidelity level (68.18%) was of E. helioscopia to cure gastrointestinal disorders. Maximum fresh uses (17) were reported by C. dactylon (L.) Pars. While the highest number of species reporting fresh uses in similar number was 13. In this study, five novel plants are being reported for the first time in Pakistan for their ethnomedicinal worth. Our data reflect unique usage of the medicinal plants in the study area. The statistical tools used in the study proved useful in pointing the most important and disease category specific plants. High use value plant and the new reported medicinal plants might prove an important source of the isolation of pharmacologically active compounds.
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Affiliation(s)
| | | | - A. Rauf
- University of AWAKUM, Pakistan
| | | | - A. Gul
- Hazara University, Pakistan
| | - G. Nawaz
- Kohat University of Science and Technology, Pakistan
| | | | | | | | - A. A. Shah
- Jazan University, Kingdom of Saudi Arabia
| | - N. Azam
- University of Peshawar, Pakistan
| | | | - S. A. Shah
- National University of Medical Sciences, Pakistan
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2
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Keleher E, Iftikhar H, Schulz LF, McCanny P, Austin D, Stewart A, O'Regan W, Hallbäck M, Wallin M, Aneman A. Capnodynamic monitoring of lung volume and pulmonary blood flow during alveolar recruitment: a prospective observational study in postoperative cardiac patients. J Clin Monit Comput 2023; 37:1463-1472. [PMID: 37243954 DOI: 10.1007/s10877-023-01033-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 05/08/2023] [Indexed: 05/29/2023]
Abstract
Alveolar recruitment manoeuvres may mitigate ventilation and perfusion mismatch after cardiac surgery. Monitoring the efficacy of recruitment manoeuvres should provide concurrent information on pulmonary and cardiac changes. This study in postoperative cardiac patients applied capnodynamic monitoring of changes in end-expiratory lung volume and effective pulmonary blood flow. Alveolar recruitment was performed by incremental increases in positive end-expiratory pressure (PEEP) to a maximum of 15 cmH2O from a baseline of 5 cmH2O over 30 min. The change in systemic oxygen delivery index after the recruitment manoeuvre was used to identify responders (> 10% increase) with all other changes (≤ 10%) denoting non-responders. Mixed factor ANOVA using Bonferroni correction for multiple comparisons was used to denote significant changes (p < 0.05) reported as mean differences and 95% CI. Changes in end-expiratory lung volume and effective pulmonary blood flow were correlated using Pearson's regression. Twenty-seven (42%) of 64 patients were responders increasing oxygen delivery index by 172 (95% CI 61-2984) mL min-1 m-2 (p < 0.001). End-expiratory lung volume increased by 549 (95% CI 220-1116) mL (p = 0.042) in responders associated with an increase in effective pulmonary blood flow of 1140 (95% CI 435-2146) mL min-1 (p = 0.012) compared to non-responders. A positive correlation (r = 0.79, 95% CI 0.5-0.90, p < 0.001) between increased end-expiratory lung volume and effective pulmonary blood flow was only observed in responders. Changes in oxygen delivery index after lung recruitment were correlated to changes in end-expiratory lung volume (r = 0.39, 95% CI 0.16-0.59, p = 0.002) and effective pulmonary blood flow (r = 0.60, 95% CI 0.41-0.74, p < 0.001). Capnodynamic monitoring of end-expiratory lung volume and effective pulmonary blood flow early in postoperative cardiac patients identified a characteristic parallel increase in both lung volume and perfusion after the recruitment manoeuvre in patients with a significant increase in oxygen delivery.Trial registration This study was registered on ClinicalTrials.gov (NCT05082168, 18th of October 2021).
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Affiliation(s)
- E Keleher
- Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - H Iftikhar
- Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - L F Schulz
- Intensive Care Unit, Liverpool Hospital, South Western Sydney Local Health District, Sydney, NSW, Australia
| | - P McCanny
- Intensive Care Unit, Liverpool Hospital, South Western Sydney Local Health District, Sydney, NSW, Australia
| | - D Austin
- Intensive Care Unit, Liverpool Hospital, South Western Sydney Local Health District, Sydney, NSW, Australia
| | - A Stewart
- Intensive Care Unit, Liverpool Hospital, South Western Sydney Local Health District, Sydney, NSW, Australia
| | - W O'Regan
- Intensive Care Unit, Liverpool Hospital, South Western Sydney Local Health District, Sydney, NSW, Australia
| | | | - M Wallin
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - A Aneman
- Intensive Care Unit, Liverpool Hospital, South Western Sydney Local Health District, Sydney, NSW, Australia.
- Southwestern Clinical School, University of New South Wales, Sydney, NSW, Australia.
- Ingham Institute for Applied Medical Research, Sydney, NSW, Australia.
- Intensive Care Unit, Liverpool Hospital, Locked Bag 7103, Liverpool BC, NSW, 1871, Australia.
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Alcantara M, Iftikhar H, Kagan K, Dzheyranyan D, Abbasi P, Alamilla A, Ayala N, Baca T, Benoit V, Clausen N, Coto C, Guerrero C, Hernandez Catalan E, Hurtado S, Lopez A, Lopez J, Majarian N, Mesfin N, Mishegyan A, Mkrtchyan G, Ordonez A, Pachanyan A, Pelayo T, Rosas A, Rowsey K, Sharma E, Sharma S, Van Grinsven S, Hanzawa Y. Clarifying the Temporal Dynamics of the Circadian Clock and Flowering Gene Network Using Overexpression and Targeted Mutagenesis of Soybean EARLY FLOWERING 3-1 ( GmELF3-1 ). MicroPubl Biol 2023; 2023:10.17912/micropub.biology.000935. [PMID: 37908495 PMCID: PMC10613878 DOI: 10.17912/micropub.biology.000935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/20/2023] [Accepted: 10/11/2023] [Indexed: 11/02/2023]
Abstract
With progressing climate fluctuations, an understanding of the molecular mechanisms of crop plants that regulate their flowering responses to environments is crucial. To achieve this goal, we aimed at clarifying the gene regulatory networks among the circadian clock and flowering genes in soybean ( Glycine max ). Based on our network inference approach , we hypothesize that GmELF3-1 , one of the Evening Complex (EC) gene homologs in soybean's circadian clock, may have an integrative role in transcriptional regulation of the circadian clock and flowering gene network. In this study, we verify GmELF3-1 ' s regulatory roles in its potential downstream genes by modulating the activity of GmELF3-1 using overexpression and CRISPR-Cas9 in soybean protoplasts. Our results indicate that GmELF3-1 may control the expression of the PRR genes in the circadian clock and the flowering gene GmCOL1a .
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Affiliation(s)
| | - Hira Iftikhar
- Department of Biology, California State University Northridge
| | - Kimberly Kagan
- Department of Biology, California State University Northridge
| | | | - Pedram Abbasi
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Alejandra Alamilla
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Nicole Ayala
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Trixy Baca
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Vanessa Benoit
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Natalia Clausen
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Caroline Coto
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Celia Guerrero
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Erik Hernandez Catalan
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Sierra Hurtado
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Angela Lopez
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Jacqueline Lopez
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Nicholas Majarian
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Noah Mesfin
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Avetis Mishegyan
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Goharik Mkrtchyan
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Amy Ordonez
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Arthur Pachanyan
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Tanya Pelayo
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Alondra Rosas
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Kylee Rowsey
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Elina Sharma
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Sanjiti Sharma
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Shauna Van Grinsven
- Department of Biology, BIOL 481L Plant Physiology, California State University Northridge
| | - Yoshie Hanzawa
- Department of Biology, California State University Northridge
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Komatsu DE, Uddin SMZ, Gordon C, Kanjiya MP, Bogdan D, Achonu J, DiBua A, Iftikhar H, Ackermann A, Shah RJ, Shieh J, Bialkowska AB, Kaczocha M. Acute postoperative pain and dorsal root ganglia transcriptomic signatures following total knee arthroplasty (TKA) in rats: An experimental study. PLoS One 2022; 17:e0278632. [PMID: 36473007 PMCID: PMC9725137 DOI: 10.1371/journal.pone.0278632] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 11/19/2022] [Indexed: 12/12/2022] Open
Abstract
Total knee arthroplasty (TKA) is the final treatment option for patients with advanced knee osteoarthritis (OA). Unfortunately, TKA surgery is accompanied by acute postoperative pain that is more severe than arthroplasty performed in other joints. Elucidating the molecular mechanisms specific to post-TKA pain necessitates an animal model that replicates clinical TKA procedures, induces acute postoperative pain, and leads to complete functional recovery. Here, we present a new preclinical TKA model in rats and report on functional and behavioral outcomes indicative of pain, analgesic efficacy, serum cytokine levels, and dorsal root ganglia (DRG) transcriptomes during the acute postoperative period. Following TKA, rats exhibited marked deficits in weight bearing that persisted for 28 days. Home cage locomotion, rearing, and gait were similarly impacted and recovered by day 14. Cytokine levels were elevated on postoperative days one and/or two. Treatment with morphine, ketorolac, or their combination improved weight bearing while gabapentin lacked efficacy. When TKA was performed in rats with OA, similar functional deficits and comparable recovery time courses were observed. Analysis of DRG transcriptomes revealed upregulation of transcripts linked to multiple molecular pathways including inflammation, MAPK signaling, and cytokine signaling and production. In summary, we developed a clinically relevant rat TKA model characterized by resolution of pain and functional recovery within five weeks and with pain-associated behavioral deficits that are partially alleviated by clinically administered analgesics, mirroring the postoperative experience of TKA patients.
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Affiliation(s)
- David E. Komatsu
- Department of Orthopaedics and Rehabilitation, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
- * E-mail: (DEK); (MK)
| | - Sardar M. Z. Uddin
- Department of Orthopaedics and Rehabilitation, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Chris Gordon
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Martha P. Kanjiya
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Diane Bogdan
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Justice Achonu
- Department of Orthopaedics and Rehabilitation, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Adriana DiBua
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Hira Iftikhar
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Amanda Ackermann
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Rohan J. Shah
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Jason Shieh
- Department of Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Agnieszka B. Bialkowska
- Department of Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
| | - Martin Kaczocha
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
- Stony Brook University Pain and Analgesia Research Center, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States of America
- * E-mail: (DEK); (MK)
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Alcantara M, Acosta P, Azatian A, Calderon C, Candray K, Castillo N, Coria-Gomez L, Duran J, Fam J, Hernandez-Segura D, Hidalgo L, Huerta C, Jordan S, Kagan K, Loya K, Martinez E, Musaev K, Navarro R, Nazarians N, Paglia R, Robles G, Simmons T, Smith S, Soudani F, Valenzuela E, Villalobos J, Iftikhar H, Hanzawa Y. Experimental Verification of Inferred Regulatory Interactions of EARLY FLOWERING 3 ( GmELF3-1 ) in Glycine max. MicroPubl Biol 2022; 2022:10.17912/micropub.biology.000687. [PMID: 36506349 PMCID: PMC9729981 DOI: 10.17912/micropub.biology.000687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 10/28/2022] [Accepted: 11/18/2022] [Indexed: 12/15/2022]
Abstract
Understanding the roles of evening complex (EC) genes in the circadian clock of plants can inform how diurnal transcriptional loops in the clock gene network function to regulate key physiological and developmental events, including flowering transition. Gene regulatory interactions among soybean's circadian clock and flowering genes were inferred using time-series RNA-seq data and the network inference algorithmic package CausNet. In this study, we seek to clarify the inferred regulatory interactions of the EC gene GmELF3-1. A gene expression analysis using soybean protoplasts as a transient model indicated regulatory roles of GmELF3-1 in expression of selected flowering genes.
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Affiliation(s)
| | - Patrick Acosta
- Department of Biology, California State University Northridge
| | - Ara Azatian
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Carlos Calderon
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Kevin Candray
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Natalie Castillo
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Luis Coria-Gomez
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Jose Duran
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Justina Fam
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Diego Hernandez-Segura
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Lennix Hidalgo
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Carlos Huerta
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Shane Jordan
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Kimberly Kagan
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Karla Loya
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Eduardo Martinez
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Kirill Musaev
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Roxana Navarro
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Narek Nazarians
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Robert Paglia
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Gabriela Robles
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Taylor Simmons
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Shawn Smith
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Faisel Soudani
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Emily Valenzuela
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Jessica Villalobos
- Department of Biology, BIOL 481 Plant Physiology, California State University Northridge
| | - Hira Iftikhar
- Department of Biology, California State University Northridge
| | - Yoshie Hanzawa
- Department of Biology, California State University Northridge
,
Correspondence to: Yoshie Hanzawa (
)
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Iftikhar H, Nair GB, Kumar A. Update on Diagnosis and Treatment of Adult Pulmonary Alveolar Proteinosis. Ther Clin Risk Manag 2021; 17:701-710. [PMID: 34408422 PMCID: PMC8364424 DOI: 10.2147/tcrm.s193884] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/19/2021] [Indexed: 01/15/2023] Open
Abstract
Pulmonary alveolar proteinosis (PAP) is a rare pulmonary surfactant homeostasis disorder resulting in buildup of lipo-proteinaceous material within the alveoli. PAP is classified as primary (autoimmune and hereditary), secondary, congenital and unclassifiable type based on the underlying pathogenesis. PAP has an insidious onset and can, in some cases, progress to severe respiratory failure. Diagnosis is often secured with bronchoalveolar lavage in the setting of classic imaging findings. Recent insights into genetic alterations and autoimmune mechanisms have provided newer diagnostics and treatment options. In this review, we discuss the etiopathogenesis, diagnosis and treatment options available and emerging for PAP.
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Affiliation(s)
- Hira Iftikhar
- Division of Pulmonary and Critical Care, Beaumont Health, OUWB School of Medicine, Royal Oak, MI, USA
| | - Girish B Nair
- Division of Pulmonary and Critical Care, Beaumont Health, OUWB School of Medicine, Royal Oak, MI, USA
| | - Anupam Kumar
- Division of Pulmonary and Critical Care, Baylor College of Medicine, Houston, TX, USA
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Karim M, Qureshi B, Hafiz A, Ali N, Abrar S, Iftikhar H, Abbasi A. PO-0962 Evaluation of anxiety and depression in head and neck cancer patients during radiotherapy. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07413-2] [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: 11/30/2022]
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8
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Sulaiman A, Lutfi A, Ikram M, Fatimi S, Bin Pervez M, Shamim F, Abbas SA, Iftikhar H. Tracheomalacia after thyroidectomy for retrosternal goitres requiring sternotomy- a myth or reality? Ann R Coll Surg Engl 2021; 103:504-507. [PMID: 34192497 DOI: 10.1308/rcsann.2021.0014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION Tracheomalacia after thyroidectomy is not well understood. Reports on tracheomalacia are conflicting, with some suggesting a high rate and other large cohorts in which no tracheomalacia is reported. The aim of our study was to assess the incidence and factors associated with tracheomalacia after thyroidectomy in patients with retrosternal goitres requiring sternotomy at a high-volume tertiary care referral centre. METHODS A longitudinal cohort study was conducted from January 2011 to December 2019. All adult patients who underwent thyroidectomy with sternotomy were included. Tracheomalacia was considered when tracheal rings were soft compared with other parts (proximal or distal) of the trachea and required either tracheostomy or resection with anastomosis. The decision to perform a tracheostomy or to administer continuous or bilevel positive airway pressure postoperatively was made depending on the degree of tracheomalacia. Logistic regression analysis was used to assess factors associated with tracheomalacia. RESULTS We evaluated 40 patients who underwent thyroidectomy with sternotomy. The mean age of our cohort was 48.7 ± 11.3 years and the population was predominantly female (67.5%). One patient required tracheal resection with anastomosis, and two patients required tracheostomy. Multivariable logistic regression analysis did not reveal any patient- or thyroid-related factor significantly associated with the development of tracheomalacia in our cohort. CONCLUSIONS The incidence of tracheomalacia after thyroidectomy with sternotomy appears to be very low. However, the occurrence of tracheomalacia after thyroidectomy in cases of large goitre is possible and hence worrisome.
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Affiliation(s)
- A Sulaiman
- Aga Khan University Hospital, Karachi, Pakistan
| | - A Lutfi
- Aga Khan University Hospital, Karachi, Pakistan
| | - M Ikram
- Aga Khan University Hospital, Karachi, Pakistan
| | - S Fatimi
- Aga Khan University Hospital, Karachi, Pakistan
| | | | - F Shamim
- Aga Khan University Hospital, Karachi, Pakistan
| | - S A Abbas
- Aga Khan University Hospital, Karachi, Pakistan
| | - H Iftikhar
- Aga Khan University Hospital, Karachi, Pakistan
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Iftikhar H, Ikram M. Coiling of internal carotid through 'eye of the needle' internal jugular vein: a dual great vessel anomaly. Ann R Coll Surg Engl 2021; 103:e156-e158. [PMID: 33682429 DOI: 10.1308/rcsann.2020.7074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A variation in the usual course of great vessels during neck dissection can predispose them to inadvertent iatrogenic injury, which can lead to massive bleeding. We present a case of a male patient with oral squamous cell carcinoma who underwent inferior maxillectomy and supra-omohyoid neck dissection. Lateral coiling of the extracranial internal carotid artery was seen through fenestration of the internal jugular vein. Anomalies of great vessels in the neck are rare. Variation in the course of any of these vessels can prove to be catastrophic if control is not achieved. Careful study of radiographic imaging with special consideration given to the course of great vessels in the neck should be undertaken prior to neck surgeries.
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Affiliation(s)
- H Iftikhar
- Aga Khan University Hospital, Karachi, Pakistan
| | - M Ikram
- Aga Khan University Hospital, Karachi, Pakistan
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Javaid A, Akbar I, Javed H, Khan U, Iftikhar H, Zahra D, Rashid F, Ashfaq UA. Role of Heavy Metals in Diabetes: Mechanisms and Treatment Strategies. Crit Rev Eukaryot Gene Expr 2021; 31:65-80. [PMID: 34369715 DOI: 10.1615/critreveukaryotgeneexpr.2021037971] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Toxic metals affecting metabolic pathways have a broad range in the ecosystem from both natural and anthropogenic sources. Because of constant contamination from waste and untreated chemical effluents, their emissions have risen significantly over the last few decades, quickly gaining attention due to their crucial role in the development of several metabolic disorders, notably diabetes mellitus. Cadmium and arsenic not only spread widely in our atmosphere but are also linked to a wide range of health hazards. These are primarily accumulated in the liver, kidney, and pancreas once they reach the human body, where they have deleterious effects on the metabolism of glucose and its association with other metabolic pathways, particularly glycolysis, glycogenesis, and gluconeogenesis, by altering and impairing the specific activity of major enzymes. Impairment of hepatic glucose homeostasis plays a crucial role in diabetes mellitus pathogenesis. Impaired liver and kidney functions, as well as decreased pancreatic and muscle function, also contribute significantly to elevated levels of blood glucose. Heavy metals have the potential to cause changes in the conformation in these enzymes. They also impair hormonal balance by destroying the pancreas and adrenal glands. Such metals often facilitate the development of reactive oxygen species and inhibit antioxidant defense mechanisms, with multiple organs subsequently damaged. This review briefly discusses the involvement of heavy metals in metabolic disorders such as diabetes mellitus, the enzymes involved in this pathway, and glucose homeostasis.
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Affiliation(s)
- Anam Javaid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Iqra Akbar
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Hamna Javed
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Ujala Khan
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Hira Iftikhar
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Duaa Zahra
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Fatima Rashid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
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Gupta A, Fatemi A, Ducatman B, Khayyata S, Iftikhar H, Nair G. Pulmonary Capillaritis: The Breakdown of the Histologic Features. Am J Clin Pathol 2020. [DOI: 10.1093/ajcp/aqaa161.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction/Objective
Capillary inflammation (capillaritis) is rarely the primary pathologic cause of pulmonary hemorrhage. It may coexist with vasculitis. The aim of this study is to investigate the specificity of five histologic features of pulmonary capillaritis previously described by Mark and Ramirez (discussed below). They are usually treated with corticosteroids and cyclophosphamide or azathioprine.
Methods
A retrospective review of patients with a pathologic diagnosis of capillaritis in open lung biopsies was done. The diagnosis was confirmed by two expert pulmonary pathologists. The slides were reviewed and compared to a control group, who also underwent open lung biopsies for clinical suggestion of pulmonary hemorrhage and no pathologic diagnosis of capillaritis. Cases with malignant neoplasms, large and medium size vasculitis syndromes, and diffuse alveolar damage (DAD) were excluded. The five pathologic features of capillaritis were evaluated and scored as negative (0), focal (1+) and moderate to diffuse (2+) in both groups.
Results
Five cases of pulmonary capillaritis and five cases in control group were identified. The etiology of pulmonary capillaritis in the five identified cases included autoimmune diseases, pulmonary hypertension, non-specific interstitial pneumonia, and idiopathic capillaritis. The average score for the morphologic features of capillaritis versus the control group were as follows: Interstitial erythrocytes and/or hemosiderin (2+ vs 2+), fibrinoid necrosis of capillary walls (2+vs 0), intraalveolar septal capillary occlusion by fibrin thrombi (1+ vs 0), neutrophils and nuclear dust in the interstitium, in the fibrin, and in the adjacent alveolar spaces (2+ vs 1+), and fibrin clots attached to interalveolar septa in a sessile manner (2+ vs 1+).
Conclusion
In this small study, we can conclude that fibrinous necrosis is the most specific finding for pulmonary capillaritis while interstitial erythrocytes and/or hemosiderin is least specific. Therefore, in the presence of fibrinous necrosis; in addition to other supporting features; a pathologist is more inclined to communicate a diagnosis of pulmonary capillaritis to the clinicians.
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Affiliation(s)
- A Gupta
- Pathology, Beaumont Hospital, Troy, Michigan, UNITED STATES
| | - A Fatemi
- Pathology, Beaumont Hospital, Troy, Michigan, UNITED STATES
| | - B Ducatman
- Pathology, Beaumont Hospital, Troy, Michigan, UNITED STATES
| | - S Khayyata
- Pathology, Beaumont Hospital, Troy, Michigan, UNITED STATES
| | - H Iftikhar
- Beaumont Hospital, Royal Oak, Michigan, UNITED STATES
| | - G Nair
- Beaumont Hospital, Royal Oak, Michigan, UNITED STATES
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Ionescu F, Iftikhar H, Polina A, Dalal B. EOSINOPHILS IN THE LUNGS: NOT ALWAYS STRAIGHTFORWARD. Chest 2020. [DOI: 10.1016/j.chest.2020.08.1043] [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: 10/23/2022] Open
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13
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Iftikhar H, Rozi S, Zahid N, Awan MS, Nathani KR. Lymph node ratio as a prognostic marker of oral tongue squamous cell carcinoma: a cohort study. Ann R Coll Surg Engl 2020; 102:726-732. [PMID: 32808800 DOI: 10.1308/rcsann.2020.0173] [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] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Lymph node metastasis is a poor prognostic indicator and is well established in tongue squamous cell carcinoma. Based on the current staging system, accurate risk stratification is difficult. There is thus a need to evaluate an alternate method for predicting recurrence and survival. The objective of the study was to evaluate lymph node ratio as a prognostic marker as compared with N-staging for tongue squamous cell carcinoma. MATERIALS AND METHODS We conducted a retrospective cohort study with 56 patients with a lymph node ratio greater than 0.012 (exposed) and 74 patients with a lymph node ratio less than 0.012 (unexposed). Overall five-year survival and disease-free survival were assessed. The Cox proportional hazard model was used to analyse lymph node ratio as a predictor of outcome, together with other covariates. RESULTS A total of 130 patients were included in the study. Patients with lymph node ratio greater than 0.012 had a poor overall five-year (mean survival time 52.1 months vs 38.1 months) and disease-free survival (mean survival time 53.6 months vs 39.2 months). The hazard of death among patients with a lymph node ratio greater than 0.012 was 3.24 times higher than the hazard of death among patients with a lymph node ratio less than 0.012 (95% confidence interval 1.82-5.77). DISCUSSION Lymph node ratio is a superior prognostic marker compared with the currently used American Joint Committee on Cancer N-staging. Our findings also suggest that the margin status (involved) of the primary tumour resection adversely affects prognosis.
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Affiliation(s)
- H Iftikhar
- Aga Khan University Hospital, Karachi, Pakistan
| | - S Rozi
- Aga Khan University Hospital, Karachi, Pakistan
| | - N Zahid
- Aga Khan University Hospital, Karachi, Pakistan
| | - M S Awan
- Aga Khan University Hospital, Karachi, Pakistan
| | - K R Nathani
- Aga Khan University Hospital, Karachi, Pakistan
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Iftikhar H, Sohail Awan M, Usman M, Khoja A, Khan W. Discordance between fine-needle aspiration cytology and histopathology in patients with mucoepidermoid carcinoma of parotid gland. Ann R Coll Surg Engl 2020; 102:340-342. [PMID: 32159383 DOI: 10.1308/rcsann.2020.0022] [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] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Fine-needle aspiration cytology (FNAC) is an important diagnostic tool used preoperatively for the diagnosis of parotid lump. Mucoepidermoid carcinoma comprises 5-10% of all salivary gland tumours. It poses a diagnostic challenge on FNAC with high false negative rate. The objective of this study was to evaluate the discordance between cytology/FNAC and histopathology in patients with mucoepidermoid carcinoma. MATERIAL AND METHODS A cross-sectional study was conducted from 1 January 2010 to 31 December 2014. Patients aged 18 years and above with FNAC or histopathology suggestive of mucoepidermoid carcinoma were identified. FNAC when compared with histology (gold standard) was classified into true positive (presence of mucoepidermoid carcinoma correctly diagnosed on FNAC), true negative (absence of mucoepidermoid carcinoma correctly diagnosed on FNAC), false positive (FNAC incorrectly diagnosed mucoepidermoid carcinoma), false negative (FNAC failed to diagnose mucoepidermoid carcinoma). RESULTS A total of 16 patients fulfilled our eligibility criteria. Seven cytological samples were true positive (ie correctly diagnosed mucoepidermoid carcinoma by FNAC), eight cytological specimens were false negative (ie could not pick up mucoepidermoid carcinoma on FNAC). One case was false positive on cytology (ie diagnosed mucoepidermoid carcinoma on FNAC but was reported to be Warthin's tumour on histopathology) and none were true negative. CONCLUSION FNAC is not reliable for diagnosis of mucoepidermoid carcinoma. More than 50% of our patients had discordant results between cytology and histology. We recommend a high index of suspicion for mucoepidermoid carcinoma given the poor yield of cytology.
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Affiliation(s)
- H Iftikhar
- Department of Otolaryngology/Head and Neck Surgery, Aga Khan University Hospital, Karachi, Pakistan
| | - M Sohail Awan
- Department of Otolaryngology/Head and Neck Surgery, Aga Khan University Hospital, Karachi, Pakistan
| | - M Usman
- Department of Pathology, Aga Khan University Hospital, Karachi, Pakistan
| | - A Khoja
- Department of Medicine, Aga Khan University Hospital, Karachi, Pakistan
| | - W Khan
- PNS Shifa Hospital, Karachi, Pakistan
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Shah S, Jafri RZ, Mobin K, Mirza R, Nanji K, Jahangir F, Patel SJ, Ejaz MS, Qaiser I, Iftikhar H, Aziz K, Khan W, Maqbool HS, Ahmed H. Frequency and features of nocturnal enuresis in Pakistani children aged 5 to 16 years based on ICCS criteria: a multi-center cross-sectional study from Karachi, Pakistan. BMC Fam Pract 2018; 19:198. [PMID: 30547752 PMCID: PMC6293541 DOI: 10.1186/s12875-018-0876-5] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 11/19/2018] [Indexed: 11/24/2022]
Abstract
Background Nocturnal enuresis (NE) is a common symptom in children worldwide. International Children’s Continence Society (ICCS) defines enuresis as either mono-symptomatic, NE with lower urinary tract symptoms and NE with co-morbid conditions. The objectives of this study were to determine the frequencies and types of NE and associated symptoms and conditions in children aged 5 to 16 years based on ICCS criteria. Methods A multi-center cross sectional study was conducted between November 2012 and December 2013 in the primary care clinics of four hospitals in Karachi. Children aged five to fifteen years were included through consecutive sampling. Informed consent was obtained from the parents and a pre-coded semi-structured questionnaire was used to obtain the information. Data was entered on SPSS version 20.0 and multivariable logistic regression analysis was used for data analysis. Results Out of 429 children aged between five and sixteen years, 243(56.9%) were boys and the remaining 186(43.1%) were girls. One hundred and eighty three children (43%) had nocturnal enuresis (NE). Forty four (10.3%), had mono-symptomatic NE, 57(31.1%) had associated lower urinary tract symptoms (NE-LUTS), whereas 30 (16.3%) had NE with a co-morbid condition. Fifty two (28.4%) NE’s had at least one of both LUTS and a co-morbid condition. Out of the 246(57%) non-enuretic’s, 31(12.6%) had a LUTS, 95(38.6%) had a co-morbid condition and 57(23.2%) had at least one of both LUTS and a co-morbid condition. The remaining 63 (25.6%) were symptom free. Increased voiding frequency, urgency, dysuria, suprapubic pain and daytime incontinence were the LUTS significantly associated with NE. Co-morbid conditions significantly associated with NE included constipation, congenital defects, developmental delay, and learning and sleep problems. Conclusion Although NE can be an only symptom, it is often associated with lower urinary tract symptoms like dysuria, urgency, suprapubic pain, and daytime incontinence. Children presenting with NE often have co-morbid conditions like constipation, urinary tract infection, sleep disorders, and developmental delay. Many children presenting with these conditions as the primary complaint may also have NE. It should be addressed as unrecognized and untreated NE can cause additional morbidity and distress.
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Affiliation(s)
- Sameena Shah
- Department of Family Medicine, Aga Khan University, Stadium Road, Karachi, Pakistan.
| | - Rabab Zehra Jafri
- Massachusetts General Hospital for Children, Harvard Medical School, Boston, MA, USA
| | - Khalil Mobin
- Community Health Sciences, Karachi Medical and Dental College, Karachi Metropolitan Corporation, Karachi, Pakistan
| | | | - Kashmira Nanji
- Department of Family Medicine, Aga Khan University, Karachi, Pakistan
| | - Fatima Jahangir
- Department of Family Medicine, Ziauddin University Hospital, Karachi, Pakistan
| | | | - Muzamil Shabana Ejaz
- Dow Medical College, DOW University of Health Sciences, Baba-e-Urdu Road, Karachi, Pakistan
| | | | | | - Komal Aziz
- Saint Louis University, St Louis, MO, USA
| | - Wajiha Khan
- Department of Pediatrics, Aga Khan University, Karachi., Pakistan
| | - Humza S Maqbool
- UC, San Francisco - Fresno medical education program, California, USA
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Iftikhar H, Virk N, Bhatti MF. Homology Modeling of CTR1 Protein Kinase Domain in Solanaceae Species for Identification of Salient Features in terms of Structure and Function, and Interaction Analysis with Lipids. CURR PROTEOMICS 2018. [DOI: 10.2174/1570164615666180723145810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hira Iftikhar
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Nasar Virk
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Muhammad Faraz Bhatti
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
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Affiliation(s)
- Hira Iftikhar
- Internal Medicine, Beaumont Health, Royal Oak, Michigan
| | - Vishal K Patel
- Pulmonary Critical Care & Sleep Medicine, Beaumont Health, Royal Oak, Michigan
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O'Connell N, Iftikhar H, Srinivasan G, Radhakrishnan J. Efficacy of palliative treatments in renal cancer: A retrospective observational study in a district general hospital in the UK. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx661.002] [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: 11/14/2022] Open
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Iftikhar H, Naveed N, Virk N, Bhatti MF, Song F. In silico analysis reveals widespread presence of three gene families, MAPK, MAPKK and MAPKKK, of the MAPK cascade from crop plants of Solanaceae in comparison to the distantly-related syntenic species from Rubiaceae, coffee. PeerJ 2017; 5:e3255. [PMID: 28603666 PMCID: PMC5463992 DOI: 10.7717/peerj.3255] [Citation(s) in RCA: 7] [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: 06/10/2016] [Accepted: 03/31/2017] [Indexed: 11/20/2022] Open
Abstract
Mitogen-activated protein kinases (MAPKs) are an important family of genes which play roles in vital plant processes, and they also help in coping against various kinds of environmental stresses including abiotic as well as biotic factors. The advancement of genomics calls for the annotation, identification, and detailed processing of the essential gene families in plants in order to provide insights into the importance of their central roles as well as for providing the basis for making their growth vigorous even under stressed conditions and, ultimately, to benefit from them by foreseeing the potential threats to their growth. In the current study, MAPK, MAPKK, and MAPKKK families of the MAPK cascade were identified and reported from five different agriculturally and economically important crop species of the Solanaceae and Rubiaceae families based on conserved signature motifs aligned throughout the members of the families under this gene superfamily. Genes reported from the species after strict filtering were: 89, tomato; 108, potato; 63, eggplant; 79, pepper; 64, coffee. These MAPKs were found to be randomly distributed throughout the genome on the chromosomes of the respective species. Various characteristics of the identified genes were studied including gene structure, gene and coding sequence length, protein length, isoelectric point, molecular weight, and subcellular localization. Moreover, maximum likelihood test of phylogeny was conducted on the retrieved sequences for the three MAPK cascade families to determine their homologous relationships which were also analyzed quantitatively by heat plots.
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Affiliation(s)
- Hira Iftikhar
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Nayab Naveed
- University Institute of Information Technology, PMAS-Arid Agriculture University, Rawalpindi, Pakistan
| | - Nasar Virk
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Muhammad Faraz Bhatti
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Fengming Song
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
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Iftikhar H, Batool S, Deep A, Narasimhan B, Sharma PC, Malhotra M. In silico analysis of the inhibitory activities of GABA derivatives on 4-aminobutyrate transaminase. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.03.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Iftikhar H, Ahmad I, Gan SH, Shaik MM, Iftikhar N, Nawaz MS, Greig NH, Kamal MA. Quinoline derivatives: candidate drugs for a class B G-protein coupled receptor, the calcitonin gene-related peptide receptor, a cause of migraines. CNS Neurol Disord Drug Targets 2014; 13:1130-9. [PMID: 25230231 DOI: 10.2174/1871527313666140917111341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 02/16/2014] [Accepted: 03/12/2014] [Indexed: 11/22/2022]
Abstract
Class B G-protein coupled receptors are involved in a wide variety of diseases and are a major focus in drug design. Migraines are a common problem, and one of their major causative agents is the class B G-protein coupled receptor, Calcitonin gene-related peptide (CGRP) receptor, a target for competitive drug discovery. The calcitonin receptor-like receptor generates complexes with a receptor activity-modifying protein, which determines the type of receptor protein formed. The CGRP receptor comprises a complex formed from the calcitonin receptor-like receptor and receptor activity-modifying protein 1. In this study, an in silico docking approach was used to target the calcitonin receptor-like receptor in the bound form with receptor activity-modifying protein 1 (CGRP receptor), as well as in the unbound form. In both cases, the resulting inhibitors bound to the same cavity of the calcitonin receptor-like receptor. The twelve evaluated compounds were competitive inhibitors and showed efficient inhibitory activity against the CGRP receptor and Calcitonin receptor-like receptor. The two studied quinoline derivatives demonstrated potentially ideal inhibitory activity in terms of binding interactions and low range nano-molar inhibition constants. These compounds could prove helpful in designing drugs for the effective treatment of migraines. We propose that quinoline derivatives possess inhibitory activity by disturbing CGRP binding in the trigeminovascular system and may be considered for further preclinical appraisal for the treatment of migraines.
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Affiliation(s)
| | | | | | | | | | | | | | - Mohammad A Kamal
- Metabolomics & Enzymology Unit, Fundamental and Applied Biology Group, King Fahd Medical Research Center, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia.
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Iftikhar H, Rashid S. Molecular docking studies of flavonoids for their inhibition pattern against β-catenin and pharmacophore model generation from experimentally known flavonoids to fabricate more potent inhibitors for Wnt signaling pathway. Pharmacogn Mag 2014; 10:S264-71. [PMID: 24991101 PMCID: PMC4078341 DOI: 10.4103/0973-1296.133269] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [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: 07/22/2013] [Revised: 12/06/2013] [Accepted: 05/28/2014] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Canonical Wnt signaling plays a key role in tumor cell proliferation, which correlates with the accumulation of β-catenin in cell due to inactivation of glycogen synthetase kinase-3 β. However, uncontrolled expression of β-catenin leads to fibromatosis, sarcoma and mesenchymal tumor formation. Recently, a number of polyphenolic compounds of naturally occurring flavonoid family have been screened for the inhibition of Wnt signaling. OBJECTIVE Elucidation of the binding mode of inhibitors to β-catenin, reporting more potent inhibitors for the disease-causing protein and designing a pharmacophore model based on naturally occurring compounds, flavonoids. MATERIALS AND METHODS In this study, a comparative molecular docking analysis was performed to elucidate the binding mode of experimentally reported and unknown inhibitors. Based on the knowledge of geometry, binding affinity and drug score, we described a subset of novel inhibitors. RESULTS The binding energy of known inhibitors (isorhamnetin, fisetin, genistein and silibinin) was observed in a range of -5.68 to -4.98 kcal/mol, while novel inhibitors (catechin, luteolin, coumestrol and β-naphthoflavone) exhibited -6.50 to -5.22 kcal/mol. We observed good placement and strong interactions of selected compounds inside the binding pocket of β-catenin. Moreover, flavonoid family members and T cell factors 4 (TCF4) compete for β-catenin binding by sharing common binding residues. CONCLUSION This study will largely help in understanding the molecular basis of β-catenin/TCF4 inhibition through flavonoids by exploring their structural details. Finally, the novel inhibitors proposed in this study need further attention to uncover cancer treatment and with the generated pharmacophore model, more and potent β-catenin inhibitors can be easily screened.
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Affiliation(s)
- Hira Iftikhar
- Department of Bioinformatics, National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sajid Rashid
- Department of Bioinformatics, National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
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