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Abdulbaki A, Doll T, Helgers S, Heissler HE, Voges J, Krauss JK, Schwabe K, Alam M. Subthalamic Nucleus Deep Brain Stimulation Restores Motor and Sensorimotor Cortical Neuronal Oscillatory Activity in the Free-Moving 6-Hydroxydopamine Lesion Rat Parkinson Model. Neuromodulation 2024; 27:489-499. [PMID: 37002052 DOI: 10.1016/j.neurom.2023.01.014] [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: 08/10/2022] [Revised: 12/28/2022] [Accepted: 01/04/2023] [Indexed: 03/31/2023]
Abstract
OBJECTIVES Enhanced beta oscillations in cortical-basal ganglia (BG) thalamic circuitries have been linked to clinical symptoms of Parkinson's disease. Deep brain stimulation (DBS) of the subthalamic nucleus (STN) reduces beta band activity in BG regions, whereas little is known about activity in cortical regions. In this study, we investigated the effect of STN DBS on the spectral power of oscillatory activity in the motor cortex (MCtx) and sensorimotor cortex (SMCtx) by recording via an electrocorticogram (ECoG) array in free-moving 6-hydroxydopamine (6-OHDA) lesioned rats and sham-lesioned controls. MATERIALS AND METHODS Male Sprague-Dawley rats (250-350 g) were injected either with 6-OHDA or with saline in the right medial forebrain bundle, under general anesthesia. A stimulation electrode was then implanted in the ipsilateral STN, and an ECoG array was placed subdurally above the MCtx and SMCtx areas. Six days after the second surgery, the free-moving rats were individually recorded in three conditions: 1) basal activity, 2) during STN DBS, and 3) directly after STN DBS. RESULTS In 6-OHDA-lesioned rats (N = 8), the relative power of theta band activity was reduced, whereas activity of broad-range beta band (12-30 Hz) along with two different subbeta bands, that is, low (12-30 Hz) and high (20-30 Hz) beta band and gamma band, was higher in MCtx and SMCtx than in sham-lesioned controls (N = 7). This was, to some extent, reverted toward control level by STN DBS during and after stimulation. No major differences were found between contacts of the electrode grid or between MCtx and SMCtx. CONCLUSION Loss of nigrostriatal dopamine leads to abnormal oscillatory activity in both MCtx and SMCtx, which is compensated by STN stimulation, suggesting that parkinsonism-related oscillations in the cortex and BG are linked through their anatomic connections.
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Affiliation(s)
- Arif Abdulbaki
- Hannover Medical School, Department of Neurosurgery, Hannover, Germany.
| | - Theodor Doll
- Fraunhofer Institute for Toxicology and Experimental Medicine, Hannover, Germany
| | - Simeon Helgers
- Hannover Medical School, Department of Neurosurgery, Hannover, Germany
| | - Hans E Heissler
- Hannover Medical School, Department of Neurosurgery, Hannover, Germany
| | - Jürgen Voges
- Department of Stereotactic Neurosurgery, University Hospital Magdeburg, Magdeburg, Germany
| | - Joachim K Krauss
- Hannover Medical School, Department of Neurosurgery, Hannover, Germany
| | - Kerstin Schwabe
- Hannover Medical School, Department of Neurosurgery, Hannover, Germany
| | - Mesbah Alam
- Hannover Medical School, Department of Neurosurgery, Hannover, Germany
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Marchetta P, Dapper K, Hess M, Calis D, Singer W, Wertz J, Fink S, Hage SR, Alam M, Schwabe K, Lukowski R, Bourien J, Puel JL, Jacob MH, Munk MHJ, Land R, Rüttiger L, Knipper M. Dysfunction of specific auditory fibers impacts cortical oscillations, driving an autism phenotype despite near-normal hearing. FASEB J 2024; 38:e23411. [PMID: 38243766 DOI: 10.1096/fj.202301995r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/04/2023] [Accepted: 12/22/2023] [Indexed: 01/21/2024]
Abstract
Autism spectrum disorder is discussed in the context of altered neural oscillations and imbalanced cortical excitation-inhibition of cortical origin. We studied here whether developmental changes in peripheral auditory processing, while preserving basic hearing function, lead to altered cortical oscillations. Local field potentials (LFPs) were recorded from auditory, visual, and prefrontal cortices and the hippocampus of BdnfPax2 KO mice. These mice develop an autism-like behavioral phenotype through deletion of BDNF in Pax2+ interneuron precursors, affecting lower brainstem functions, but not frontal brain regions directly. Evoked LFP responses to behaviorally relevant auditory stimuli were weaker in the auditory cortex of BdnfPax2 KOs, connected to maturation deficits of high-spontaneous rate auditory nerve fibers. This was correlated with enhanced spontaneous and induced LFP power, excitation-inhibition imbalance, and dendritic spine immaturity, mirroring autistic phenotypes. Thus, impairments in peripheral high-spontaneous rate fibers alter spike synchrony and subsequently cortical processing relevant for normal communication and behavior.
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Affiliation(s)
- Philine Marchetta
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Konrad Dapper
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Morgan Hess
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Dila Calis
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Wibke Singer
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Jakob Wertz
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Stefan Fink
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Steffen R Hage
- Werner Reichardt Centre for Integrative Neuroscience, University of Tübingen, Tübingen, Germany
| | - Mesbah Alam
- Experimental Neurosurgery, Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Kerstin Schwabe
- Experimental Neurosurgery, Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Robert Lukowski
- Institute of Pharmacy, Pharmacology, Toxicology and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Jerome Bourien
- Institute for Neurosciences Montpellier, Institut National de la Santé et de la Recherche Médical, University of Montpellier, Montpellier, France
| | - Jean-Luc Puel
- Institute for Neurosciences Montpellier, Institut National de la Santé et de la Recherche Médical, University of Montpellier, Montpellier, France
| | - Michele H Jacob
- Department of Neuroscience, Tufts University School of Medicine, Sackler School of Biomedical Sciences, Boston, Massachusetts, USA
| | - Matthias H J Munk
- Department of Psychiatry & Psychotherapy, University of Tübingen, Tübingen, Germany
- Department of Biology, Technical University Darmstadt, Darmstadt, Germany
| | - Rüdiger Land
- Department of Experimental Otology, Institute of Audioneurotechnology, Hannover Medical School, Hannover, Germany
| | - Lukas Rüttiger
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
| | - Marlies Knipper
- Molecular Physiology of Hearing, Department of Otolaryngology, Head and Neck Surgery, Tübingen Hearing Research Centre, University of Tübingen, Tübingen, Germany
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Jelinek J, Johne M, Alam M, Krauss JK, Kral A, Schwabe K. Hearing loss in juvenile rats leads to excessive play fighting and hyperactivity, mild cognitive deficits and altered neuronal activity in the prefrontal cortex. Curr Res Neurobiol 2024; 6:100124. [PMID: 38616957 PMCID: PMC11015060 DOI: 10.1016/j.crneur.2024.100124] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/23/2023] [Accepted: 12/29/2023] [Indexed: 04/16/2024] Open
Abstract
Background In children, hearing loss has been associated with hyperactivity, disturbed social interaction, and risk of cognitive disturbances. Mechanistic explanations of these relations sometimes involve language. To investigate the effect of hearing loss on behavioral deficits in the absence of language, we tested the impact of hearing loss in juvenile rats on motor, social, and cognitive behavior and on physiology of prefrontal cortex. Methods Hearing loss was induced in juvenile (postnatal day 14) male Sprague-Dawley rats by intracochlear injection of neomycin under general anesthesia. Sham-operated and non-operated hearing rats served as controls. One week after surgery auditory brainstem response (ABR) measurements verified hearing loss or intact hearing in sham-operated and non-operated controls. All rats were then tested for locomotor activity (open field), coordination (Rotarod), and for social interaction during development in weeks 1, 2, 4, 8, 16, and 24 after surgery. From week 8 on, rats were trained and tested for spatial learning and memory (4-arm baited 8-arm radial maze test). In a final setting, neuronal activity was recorded in the medial prefrontal cortex (mPFC). Results In the open field deafened rats moved faster and covered more distance than sham-operated and non-operated controls from week 8 on (both p < 0.05). Deafened rats showed significantly more play fighting during development (p < 0.05), whereas other aspects of social interaction, such as following, were not affected. Learning of the radial maze test was not impaired in deafened rats (p > 0.05), but rats used less next-arm entries than other groups indicating impaired concept learning (p < 0.05). In the mPFC neuronal firing rate was reduced and enhanced irregular firing was observed. Moreover, oscillatory activity was altered, both within the mPFC and in coherence of mPFC with the somatosensory cortex (p < 0.05). Conclusions Hearing loss in juvenile rats leads to hyperactive behavior and pronounced play-fighting during development, suggesting a causal relationship between hearing loss and cognitive development. Altered neuronal activities in the mPFC after hearing loss support such effects on neuronal networks outside the central auditory system. This animal model provides evidence of developmental consequences of juvenile hearing loss on prefrontal cortex in absence of language as potential confounding factor.
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Affiliation(s)
- Jonas Jelinek
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Marie Johne
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
- Cluster of Excellence Hearing4all, German Research Foundation, Hannover, Germany
| | - Mesbah Alam
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Joachim K. Krauss
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Andrej Kral
- Cluster of Excellence Hearing4all, German Research Foundation, Hannover, Germany
- Institute of AudioNeuroTechnology, Hannover Medical School, Stadtfelddamm 34, 30625, Hanover, Germany
- Department of Experimental Otology of the ENT Clinics, Hannover Medical School, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Kerstin Schwabe
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
- Cluster of Excellence Hearing4all, German Research Foundation, Hannover, Germany
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Ilyas M, Rahman A, Khan NH, Haroon M, Hussain H, Rehman L, Alam M, Rauf A, Waggas DS, Bawazeer S. Analysis of Germin-like protein genes family in Vitis vinifera (VvGLPs) using various in silico approaches. BRAZ J BIOL 2024; 84:e256732. [DOI: 10.1590/1519-6984.256732] [Citation(s) in RCA: 2] [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] [Received: 09/27/2021] [Accepted: 12/28/2021] [Indexed: 12/26/2022] Open
Abstract
Abstract Germin-like proteins (GLPs) play an important role against various stresses. Vitis vinifera L. genome contains 7 GLPs; many of them are functionally unexplored. However, the computational analysis may provide important new insight into their function. Currently, physicochemical properties, subcellular localization, domain architectures, 3D structures, N-glycosylation & phosphorylation sites, and phylogeney of the VvGLPs were investigated using the latest computational tools. Their functions were predicted using the Search tool for the retrieval of interacting genes/proteins (STRING) and Blast2Go servers. Most of the VvGLPs were extracellular (43%) in nature but also showed periplasmic (29%), plasma membrane (14%), and mitochondrial- or chloroplast-specific (14%) expression. The functional analysis predicted unique enzymatic activities for these proteins including terpene synthase, isoprenoid synthase, lipoxygenase, phosphate permease, receptor kinase, and hydrolases generally mediated by Mn+ cation. VvGLPs showed similarity in the overall structure, shape, and position of the cupin domain. Functionally, VvGLPs control and regulate the production of secondary metabolites to cope with various stresses. Phylogenetically VvGLP1, -3, -4, -5, and VvGLP7 showed greater similarity due to duplication while VvGLP2 and VvGLP6 revealed a distant relationship. Promoter analysis revealed the presence of diverse cis-regulatory elements among which CAAT box, MYB, MYC, unnamed-4 were common to all of them. The analysis will help to utilize VvGLPs and their promoters in future food programs by developing resistant cultivars against various biotic (Erysiphe necator and in Powdery Mildew etc.) and abiotic (Salt, drought, heat, dehydration, etc.) stresses.
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Affiliation(s)
| | | | | | | | | | | | - M. Alam
- University of Swabi, Pakistan
| | - A. Rauf
- University of Swabi, Pakistan
| | - D. S. Waggas
- Fakeeh College of Medical Sciences, Saudi Arabia
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Stefanovic A, Matic N, Ritchie G, Lowe CF, Leung V, Hull M, Alam M, Dawar M, Champagne S, Romney MG. Multidrug-Resistant Shigella sonnei Bacteremia among Persons Experiencing Homelessness, Vancouver, British Columbia, Canada. Emerg Infect Dis 2023; 29:1668-1671. [PMID: 37486309 PMCID: PMC10370870 DOI: 10.3201/eid2908.230323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023] Open
Abstract
Increased invasive bloodstream infections caused by multidrug resistant Shigella sonnei were noted in Vancouver, British Columbia, Canada, during 2021-2023. Whole-genome sequencing revealed clonal transmission of genotype 3.6.1.1.2 (CipR.MSM5) among persons experiencing homelessness. Improvements in identifying Shigella species, expanding treatment options for multidrug resistant infections, and developing public health partnerships are needed.
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Riedesel AK, Helgers SOA, Abdulbaki A, Hatipoglu Majernik G, Alam M, Krauss JK, Schwabe K. Severity Assessment of Complex and Repeated Intracranial Surgery in Rats. Eur Surg Res 2023; 64:108-119. [PMID: 34731861 DOI: 10.1159/000520678] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 10/21/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Evidence-based grading of the impact of intracranial surgery on rat's well-being is important for ethical and legal reasons. We assessed the severity of complex and repeated intracranial surgery in a 6-hydroxydopamine (6-OHDA) Parkinson's rat model with subsequent intracranial electrode implantation and in an intracranial tumor model with subsequent resection. METHODS Stereotactic surgery was performed in adult male rats with the same general anesthesia and perioperative pain management. In Parkinson's model, Sprague Dawley rats received unilateral injection of 6-OHDA (n = 11) or vehicle (n = 7) into the medial forebrain bundle as first operation (1st OP). After four weeks, neural electrodes were implanted in all rats as second operation (2nd OP). For tumor formation, BDIX/UlmHanZtm rats (n = 8) received frontocortical injection of BT4Ca cells as 1st OP, followed by tumor resection as 2nd OP after one week. Multiple measures severity assessment was done two days before and four days after surgery in all rats, comprising clinical scoring, body weight, and detailed behavioral screening. To include a condition with a known burden, rats with intracranial tumors were additionally assessed up to a predefined humane endpoint that has previously been classified as "moderate". RESULTS After the 1st OP, only 6-OHDA injection resulted in transient elevated clinical scores, a mild long-lasting weight reduction, and motor disturbances. After the second surgery, body weight was transiently reduced in all groups. All other parameters showed variable results. Principal component analysis showed a separation from the preoperative state driven by motor-related parameters after 6-OHDA injection, while separation after electrode implantation and more clearly after tumor resection was driven by pain-related parameters, although not reaching the level of the humane endpoint of our tumor model. CONCLUSION Overall, cranial surgery of different complexity only transiently and rather mildly affects rat's well-being. Multiple measures assessment allows the differentiation of model-related motor disturbances in Parkinson's model from potentially pain-related conditions after tumor resection and electrode implantation.
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Affiliation(s)
| | | | - Arif Abdulbaki
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | | | - Mesbah Alam
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Joachim K Krauss
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Kerstin Schwabe
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
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Horesh E, Gherardini J, Alam M, Kassir R, Chéret J, Paus R. 562 Neuroendocrinology of human scalp hair follicles: Growth hormone-releasing hormone (GHRH) stimulates hair growth and controls a fully functional intrafollicular hypothalamic-pituitary-somatotropic (HPS) signaling axis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.578] [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: 11/21/2022]
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Johne M, Helgers SOA, Alam M, Jelinek J, Hubka P, Krauss JK, Scheper V, Kral A, Schwabe K. Processing of auditory information in forebrain regions after hearing loss in adulthood: Behavioral and electrophysiological studies in a rat model. Front Neurosci 2022; 16:966568. [DOI: 10.3389/fnins.2022.966568] [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] [Received: 06/11/2022] [Accepted: 10/20/2022] [Indexed: 11/12/2022] Open
Abstract
BackgroundHearing loss was proposed as a factor affecting development of cognitive impairment in elderly. Deficits cannot be explained primarily by dysfunctional neuronal networks within the central auditory system. We here tested the impact of hearing loss in adult rats on motor, social, and cognitive function. Furthermore, potential changes in the neuronal activity in the medial prefrontal cortex (mPFC) and the inferior colliculus (IC) were evaluated.Materials and methodsIn adult male Sprague Dawley rats hearing loss was induced under general anesthesia with intracochlear injection of neomycin. Sham-operated and naive rats served as controls. Postsurgical acoustically evoked auditory brainstem response (ABR)-measurements verified hearing loss after intracochlear neomycin-injection, respectively, intact hearing in sham-operated and naive controls. In intervals of 8 weeks and up to 12 months after surgery rats were tested for locomotor activity (open field) and coordination (Rotarod), for social interaction and preference, and for learning and memory (4-arms baited 8-arms radial maze test). In a final setting, electrophysiological recordings were performed in the mPFC and the IC.ResultsLocomotor activity did not differ between deaf and control rats, whereas motor coordination on the Rotarod was disturbed in deaf rats (P < 0.05). Learning the concept of the radial maze test was initially disturbed in deaf rats (P < 0.05), whereas retesting every 8 weeks did not show long-term memory deficits. Social interaction and preference was also not affected by hearing loss. Final electrophysiological recordings in anesthetized rats revealed reduced firing rates, enhanced irregular firing, and reduced oscillatory theta band activity (4–8 Hz) in the mPFC of deaf rats as compared to controls (P < 0.05). In the IC, reduced oscillatory theta (4–8 Hz) and gamma (30–100 Hz) band activity was found in deaf rats (P < 0.05).ConclusionMinor and transient behavioral deficits do not confirm direct impact of long-term hearing loss on cognitive function in rats. However, the altered neuronal activities in the mPFC and IC after hearing loss indicate effects on neuronal networks in and outside the central auditory system with potential consequences on cognitive function.
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Dirr M, Christensen R, Anvery N, Merkel E, Worley B, Harikumar V, Lu K, Evans S, Poon E, Alam M. LB984 Intralesional sodium thiosulfate as a reversal agent for calcium hydroxylapatite soft tissue filler: An in vitro and ex vivo comparison. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.1008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Christensen R, Harikumar V, Dirr M, Anvery N, Brieva J, Yoo S, Alam M. 244 Risk factors for post-operative surgical site infections: A case-control study. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Alam M, Paul SK, Das BR, Hoque N, Rashid A, Sultana M, Khatun MN, Ahmed S, Nasreen SA, Kobayashi N. Study of Human Brucellosis among Patients with Pyrexia of Unknown Origin by Antibody Detection. Mymensingh Med J 2022; 31:622-629. [PMID: 35780342] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This study was performed to determine the seropositivity of human brucellosis among the patients suffering from pyrexia of unidentified origin. This cross-sectional study was performed at department of Microbiology, Mymensingh Medical College, Mymensingh, Bangladesh from September 2018 to August 2019; among the patients of pyrexia of unknown origin visited inpatient and outpatient facility of department of Medicine and department of Paediatrics, Mymensingh Medical College Hospital (MMCH) in Mymensingh division of Bangladesh. A total of 400 serum samples were screened by Brucella-specific latex agglutination test to determine seropositivity. Seven percent (7.0%) (28/400) serum samples were found to be seropositive for brucellosis by detecting Brucella-specific antibody at a titer ≥1:160. Therefore, Brucella-specific latex agglutination test may be recommended as a screening test for human brucellosis in developing and underdeveloped countries.
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Affiliation(s)
- M Alam
- Dr Mahbubul Alam, MD Resident, Department of Microbiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Khan S, Alam M, Rauf Z, Noreen R, Shah K, Khan A, Ozdemir B, Selamoglu Z. Comparison of Biochemical Parameters in Patients with Hepatitis B, C, and Dual Hepatitis B and C in Northwest Pakistan. Arch Razi Inst 2022; 77:869-879. [PMID: 36284958 PMCID: PMC9548253 DOI: 10.22092/ari.2022.357172.1988] [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] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 01/26/2022] [Indexed: 05/24/2023]
Abstract
The leading causes of hepatitis are viral infections, Hepatitis B virus (HBV) and Hepatitis C virus (HCV). Millions of people have been infected with these deadly viral infections worldwide, and in Pakistan, every tenth person is infected with these viruses. Different populations respond with different rates to infectious diseases due to host genomic differences. To evaluate and compare the biochemical parameters in different types of hepatitis (Hepatitis B, C, and Co-infection) and different ethnic groups, a total of 200 pre-screened patients were recruited from District Headquarters Teaching Hospital Dera Ismail Khan and Tank. Blood samples (5ml) were taken from patients and were assayed for biochemical parameters, including four liver function tests (LFTs) and two renal function tests (RFTs). In 200 patients, the mean scores of Alanine transaminase (ALT) were 376±335, 315±265, and 478±519 IU/L in HBV, HCV, and co-infected patients, respectively. Moreover, the mean score of ALT was 31±7.2 IU/l in the normal control group. All other biochemical parameters demonstrated elevated levels in co-infection, HBV, and HCV, respectively, except total proteins. The RFTs showed a threshold or upper normal limit (UNL); nonetheless, when compared to normal control subjects, RFTs parameters were high in infected patients, as compared to normal control. Ethnicity wise comparison of parameters indicated that Pushtoon ethnic group indicated a high degree of severity of HBV infection and co-infection, as compared to Saraiki and Rajpoot ethnic groups, while Saraiki ethnic group showed a higher severity of HCV than both of Pushtoon and Rajpoot. Rajpoot ethnic group was least affected than both Pushtoon and Saraiki ethnic groups. Co-infected patients were more severely affected, as compared to HBV and HCV patients. The ethnicity-wise study provided evidence that different ethnic groups showed different degrees of severity. There may be some genetic background involved in hepatitis B and C viral infection due to which all three ethnic groups showed different degrees of severity. In gender-wise comparisons, male patients were more affected than female patients.
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Affiliation(s)
- S Khan
- Institute of Molecular Biology and Biotechnology, University of Lahore, 1-KM Defense Road Lahore-54000, Pakistan
| | - M Alam
- Gomal Center of Biochemistry and Biotechnology, Gomal University, Dera Ismail Khan-29050. KPK, Pakistan
| | - Z Rauf
- Department of Statistics, (INS) Gomal University, Dera Ismail Khan-29050, KPK, Pakistan
| | - R Noreen
- Gomal Center of Biochemistry and Biotechnology, Gomal University, Dera Ismail Khan-29050. KPK, Pakistan
| | - K Shah
- Department of Pharmaceutics, Faculty of Pharmacy, Gomal University, Dera Ismail Khan-29050, KPK, Pakistan
| | - A Khan
- Department of Sports Sciences and Physical Education, University of the Punjab, Lahore-54000, Pakistan
| | - B Ozdemir
- Department of Cardiology Faculty of Medicine, Nigde Omer Halisdemir University, Campus, 51240, Nigde, Turkey
| | - Z Selamoglu
- Department of Medical Biology, Faculty of Medicine, Nigde Ömer Halisdemir University, Nigde, Turkey
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Rahman H, Alam M, Moniruzzaman M, Raju MR, Nessa S, Nasrin S, Khuda RE, Islam F. Pattern of Tubercular Uveitis in Active Pulmonary Tuberculosis. Mymensingh Med J 2022; 31:484-489. [PMID: 35383770] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Ocular tuberculosis is an extra-pulmonary form of systemic Tuberculosis (TB). It is rarely found concomitant with active pulmonary tuberculosis (PTB). The aim of this prospective observational study was to evaluate the pattern of tubercular uveitis (TBU) in the patients with active PTB who attended in our Uvea clinic at NIO&H from July 2018 to December 2020. Active PTB patients who had uveitis consistent with TBU and TBU patients who were confirmed as active lung lesion were included in the study. Chest X-ray, TST, IGRA (QuantiFERON-TB Gold Test), RT PCR of aqueous fluid for tubercular bacillus, Gene Xpert TB test of sputum were done to confirm the diagnosis of ocular and primary TB. If the induration is 15 mm of TST was considered patient in this study. Among 33 patients of active PTB, 4 had TBU (12.12%). Among 48 patients of TBU, 5 had active PTB (10.41%). 13 eyes of 9 patients were affected. Mean age at presentation was 41.8 years. There were anterior uveitis in 23.00% eyes, posterior uveitis in 69% eyes and panuveitis in 7.00% eyes. Choroidal granuloma was the most common presentation of posterior uveitis (46.00%). There were more than 4 times chance to develop choroidal granuloma in patients with active PTB than extrapulmonary TB (Χ²=4.53, <0.05), TBU patients with choroidal granuloma should be evaluated meticulously for active PTB and active PTB patients should be evaluated routinely by ophthalmologist for the search of TBU.
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Affiliation(s)
- H Rahman
- Dr Muhammad Hafizur Rahman, Assistant Professor, Vitreo-Retina Department, National Institute of Ophthalmology and Hospital, Dhaka, Bangladesh; E-mail:
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Alam M, Etzkorn J, Albertini J, Bordeaux J, Council M, Maher I, Nehal K, Brodland D, Haas A, Kang B, Ibrahim S, Christensen R, Poon E, Worley B. Duration of Acceptable Delay Between the Time of Diagnosis and Treatment of Melanoma, Cutaneous Squamous Cell Carcinoma, and Basal Cell Carcinoma. J Eur Acad Dermatol Venereol 2022; 36:e460-e464. [DOI: 10.1111/jdv.17950] [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] [Received: 10/13/2021] [Revised: 11/29/2021] [Accepted: 01/13/2022] [Indexed: 11/30/2022]
Affiliation(s)
- M. Alam
- Department of Dermatology Feinberg School of Medicine Northwestern University Chicago
- Department of Otolaryngology Feinberg School of Medicine Northwestern University Chicago
- Department of Surgery Feinberg School of Medicine Northwestern University Chicago
- Department of Medical Social Sciences Feinberg School of Medicine Northwestern University Chicago
| | - J.R. Etzkorn
- Department of Dermatology Perelman School of Medicine University of Pennsylvania Philadelphia
| | - J.G. Albertini
- The Skin Surgery Center Winston‐Salem
- Wake Forest Department of Plastic and Reconstructive Surgery Wake Forest Baptist Health, Winston‐Salem
| | - J.S. Bordeaux
- Department of Dermatology Case Western Reserve University School of Medicine Cleveland
- University Hospitals Cleveland Medical Center Department of Dermatology Cleveland
| | - M.L. Council
- Division of Dermatology Center for Dermatologic and Cosmetic Surgery Washington University in Saint Louis Saint Louis
| | - I.A. Maher
- Department of Dermatology University of Minnesota Minneapolis
| | - K.S. Nehal
- Dermatology Service Memorial Sloan Kettering Cancer Center New York
| | - D.G. Brodland
- Zitelli & Brodland P.C. Skin Cancer Center Pittsburgh
- Departments of Dermatology, Otolaryngology, and Plastic Surgery University of Pittsburgh Pittsburgh
| | - A.F. Haas
- Sutter Health Department of Dermatology University of California‐Davis Sacramento
| | - B.Y. Kang
- Department of Dermatology Feinberg School of Medicine Northwestern University Chicago
| | - S.A. Ibrahim
- Department of Dermatology Feinberg School of Medicine Northwestern University Chicago
| | - R.E. Christensen
- Department of Dermatology Feinberg School of Medicine Northwestern University Chicago
| | - E. Poon
- Department of Dermatology Feinberg School of Medicine Northwestern University Chicago
| | - B. Worley
- Department of Dermatology Feinberg School of Medicine Northwestern University Chicago
- Florida Dermatology and Skin Cancer Centers Lake Wales
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Abdul Nabi Ali A, Alam M, Klein SC, Behmann N, Krauss JK, Doll T, Blume H, Schwabe K. Predictive accuracy of CNN for cortical oscillatory activity in an acute rat model of parkinsonism. Neural Netw 2021; 146:334-340. [PMID: 34923220 DOI: 10.1016/j.neunet.2021.11.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 10/08/2021] [Accepted: 11/24/2021] [Indexed: 10/19/2022]
Abstract
In neurological and neuropsychiatric disorders neuronal oscillatory activity between basal ganglia and cortical circuits are altered, which may be useful as biomarker for adaptive deep brain stimulation. We investigated whether changes in the spectral power of oscillatory activity in the motor cortex (MCtx) and the sensorimotor cortex (SMCtx) of rats after injection of the dopamine (DA) receptor antagonist haloperidol (HALO) would be similar to those observed in Parkinson disease. Thereafter, we tested whether a convolutional neural network (CNN) model would identify brain signal alterations in this acute model of parkinsonism. A sixteen channel surface micro-electrocorticogram (ECoG) recording array was placed under the dura above the MCtx and SMCtx areas of one hemisphere under general anaesthesia in rats. Seven days after surgery, micro ECoG was recorded in individual free moving rats in three conditions: (1) basal activity, (2) after injection of HALO (0.5 mg/kg), and (3) with additional injection of apomorphine (APO) (1 mg/kg). Furthermore, a CNN-based classification consisting of 23,530 parameters was applied on the raw data. HALO injection decreased oscillatory theta band activity (4-8 Hz) and enhanced beta (12-30 Hz) and gamma (30-100 Hz) in MCtx and SMCtx, which was compensated after APO injection (P ¡ 0.001). Evaluation of classification performance of the CNN model provided accuracy of 92%, sensitivity of 90% and specificity of 93% on one-dimensional signals. The CNN proposed model requires a minimum of sensory hardware and may be integrated into future research on therapeutic devices for Parkinson disease, such as adaptive closed loop stimulation, thus contributing to more efficient way of treatment.
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Affiliation(s)
- Ali Abdul Nabi Ali
- Institute of Microelectronic Systems, Architectures and Systems, Leibniz University Hannover, Hannover, D-30167, Lower Saxony, Germany
| | - Mesbah Alam
- Department of Neurosurgery, Hannover Medical School, Hannover, D-30625, Lower Saxony, Germany.
| | - Simon C Klein
- Institute of Microelectronic Systems, Architectures and Systems, Leibniz University Hannover, Hannover, D-30167, Lower Saxony, Germany
| | - Nicolai Behmann
- Institute of Microelectronic Systems, Architectures and Systems, Leibniz University Hannover, Hannover, D-30167, Lower Saxony, Germany
| | - Joachim K Krauss
- Department of Neurosurgery, Hannover Medical School, Hannover, D-30625, Lower Saxony, Germany
| | - Theodor Doll
- Biomaterial Engineering, Hannover Medical School and Translational Medical Engineering Fraunhofer ITEM, Hannover, D-30625, Lower Saxony, Germany
| | - Holger Blume
- Institute of Microelectronic Systems, Architectures and Systems, Leibniz University Hannover, Hannover, D-30167, Lower Saxony, Germany
| | - Kerstin Schwabe
- Department of Neurosurgery, Hannover Medical School, Hannover, D-30625, Lower Saxony, Germany
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Mughal M, Kaur I, Waxman S, Gandhi H, Kakadia M, Khakwani Z, Okoh A, Shah K, Obaid A, Sirpal V, Azad S, Jaffery A, Jagdey H, Tawfik I, Alam M. Clinical outcomes in COVID-19 patients with in-hospital cardiac arrest – an insight from multi-centre data. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
In general, rates of in-hospital cardiac arrest are reportedly 9 to 10 arrests per 1000 admissions, with survival rates of approximately 20–25%. Data regarding clinical characteristics and outcomes in patients with COVID-19 who received in-hospital CPR (cardiopulmonary resuscitation) are limited. This information can help guide end-of-life care conversations between families and health care workers based on real-world experience.
Purpose
To observe the outcomes (survival to discharged alive from the hospital) in critically sick COVID-19 patients who experienced in-hospital cardiac arrest.
Methods
This is a multi-centre institutional review board (IRB) approved retrospective study. The RT-PCR confirmed adult COVID-19 patients consecutively admitted from March 1st to April 30, 2020, were included. Data were extracted manually using the hospital's electronic medical record. The final date of follow-up to monitor clinical outcomes was January 2021.
Results
A total of 721 patients were admitted to the hospital. Of these, only 64 (8.87%) patients had “no CPR” orders.Cardiac arrest occurred in 141 (19.5%) patients. The mean duration of beginning of resuscitation was less than a minute and the mean duration of CPR was 19 minutes. The median age was 65 years; 62.4% were male. The most common co-morbidities were hypertension (66%) and diabetes mellitus (56%). The initial rhythm was non-shockable in 93.7% of patients [asystole in 48.4% and Pulseless Electrical Activity (PEA) in 45.3% of patients]. Only six (4.2%) patients had pulseless ventricular tachycardia and three (2.1%) patients had ventricular fibrillation. A total of eight patients (5.6%) survived and were discharged from the hospital; six (4.25%) had non-shockable and two (0.82%) had shockable initial rhythms. The median age of those who survived was 60 years (Figure 1).
Conclusions
Our study showed that critically sick patients with COVID-19 have a high rate of cardiac arrest and poor outcomes in those who received CPR. A non-shockable initial rhythm indicates that non-cardiac reasons might be playing a major role. These include acute respiratory insufficiency, severe sepsis, or multiorgan failure. These data should inform end-of-life care discussions between providers and patients' families.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M Mughal
- Monmouth Medical Center, Long Branch, United States of America
| | - I Kaur
- Monmouth Medical Center, Long Branch, United States of America
| | - S Waxman
- Newark Beth Israel Medical Center, The Department of Medicine, Section of Cardiology, Newark, United States of America
| | - H Gandhi
- Monmouth Medical Center, Long Branch, United States of America
| | - M Kakadia
- Monmouth Medical Center, Long Branch, United States of America
| | - Z Khakwani
- Newark Beth Israel Medical Center, The Department of Medicine, Section of Cardiology, Newark, United States of America
| | - A Okoh
- Newark Beth Israel Medical Center, The Department of Medicine, Section of Cardiology, Newark, United States of America
| | - K Shah
- St. Luke's University Hospital, Bethlehem, United States of America
| | - A Obaid
- Monmouth Medical Center, Long Branch, United States of America
| | - V Sirpal
- Monmouth Medical Center, Long Branch, United States of America
| | - S Azad
- Monmouth Medical Center, Long Branch, United States of America
| | - A Jaffery
- Monmouth Medical Center, Long Branch, United States of America
| | - H Jagdey
- Bronx-Lebanon Hospital Center, Bronx NY, United States of America
| | - I Tawfik
- Monmouth Medical Center, Long Branch, United States of America
| | - M Alam
- Baylor College of Medicine, The Department of Medicine, Section of Cardiology, Houston, United States of America
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Alam M, Paul SK, Haque N, Ahmad FU, Mazid R, Al Amin MM, Aziz MA, Paul A, Ahmed S, Nasreen SA, Kobayashi N. Seropositivity of Human Brucellosis among Patients with Pyrexia of Unknown Origin on Both Risk and Non-Risk Group of Individuals and Molecular Detection by Real-time PCR. Mymensingh Med J 2021; 30:936-942. [PMID: 34605459] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Brucellosis is a zoonotic disease that is one of the important infectious causes of Pyrexia of Unknown Origin (PUO). The objective of the present study was to determine the seropositivity and molecular detection of human brucellosis among the patients with pyrexia of unknown origin on both risk and non-risk group of individuals in greater Mymensingh. A total of 400 blood samples were randomly collected from pyretic patients started from September 2018 to August 2019. Questionnaires were used to collect data on both risk and non-risk group of individuals. All samples were initially screened for anti-Brucella antibodies using the Brucella-specific latex agglutination test. For accurate investigation, seropositive as well as seronegative serum samples were tested by BCSP31 Brucella genus-specific TaqMan real-time PCR. Overall 32(8%) cases were positive out of 400 samples by Brucella-specific latex agglutination test and/or BCSP31 Brucella genus-specific real-time PCR. Brucella-specific latex agglutination test documented 7% (28/400) positivity for brucellosis. 22(5.5%) samples found Brucella genus-specific real-time PCR positive out of 400 samples. Most real-time PCR positive cases were found from sero-positive samples of risk group population (15/32). Sero-negative but real-time PCR positive cases also found only from risk group population (4/32). There were 10 seropositive cases where real-time PCR was negative. In addition to Brucella-specific latex agglutination test as a screening test, Brucella genus-specific real-time PCR was performed for confirmation and also to avoid unjustified costs, drug toxicity, and masking of other potentially dangerous diseases.
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Affiliation(s)
- M Alam
- Dr Mahbubul Alam, MD Resident, Department of Microbiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Mauricaite R, Le Calvez K, Droney J, Caldano M, Alam M, Williams M. P14.27 Exploring end-of-life care in the GlioCova national brain tumour patient cohort. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab180.149] [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
BACKGROUND
Brain tumours are the leading cause of cancer deaths in the under-40s. Research on end-of-life care, especially in brain tumour patients is rare, yet important to patients and carers. The GlioCova project holds data on all adult brain tumour patients in England diagnosed between 2013 and 2018. Using this linked data set, we performed preliminary analysis on end-of-life care, focusing on treatment close to death and place of death.
MATERIAL AND METHODS
We used data from the English National Cancer Registry and identified all patients with a primary CNS tumour (ICD-10: C70, C71, C72) who were diagnosed between 2013 - 2018. We examined demographics, tumour morphology and grade, primary cause of death, treatment received within the last 3 and 1 month of life, and the location of death. For patients with unclear location of death (‘unknown’, ‘other’, ‘NA’), we looked at their final destination of discharge recorded in their last inpatient admission.
RESULTS
We identified 26,239 brain tumour patients of whom 20,715 had died. 41.7% were female and median age was 68 (IQR=19). Most patients had a malignant neoplasm of brain (98.6%), followed by meninges (0.7%) and spinal cord, cranial nerves and other parts of central nervous system (0.7%). The most common primary cause of death was malignant neoplasm (70%). Of the 10,021(48.4%) patients who received radiotherapy at any time between diagnosis and death, 1,341 (6.5%) received it within the last three months of life and 254 (1.3%) received it within the last month of life. Of the 5,957 (28.8%) patients who received chemotherapy, 1,358 (6.6%) started a chemotherapy regimen 3 months and 200 (0.97%) 1 month before death. 36.0% of all patients died at home, 23.8% at hospital, 14.7% in a hospice and 8.8% in a nursing home. For 16.7% of patients with an unclear location of death, the most common destination of discharge during their last hospital admission was usual place of residence (54.5%), non-NHS run Care Home (13.9%), NHS run Care Home (11.2%).
CONCLUSION
To the best of our knowledge, this is the first national analysis of end-of-life care in brain tumour patients. Active treatment towards the end of life and in a hospital deaths appear lower in brain tumour patients than in studies of other cancer groups.
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Affiliation(s)
- R Mauricaite
- Computational Oncology Laboratory, Imperial College London, London, United Kingdom
| | - K Le Calvez
- Imperial College London Healthcare NHS Trust, London, United Kingdom
| | - J Droney
- The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - M Caldano
- The Brain Tumour charity, Fleet, United Kingdom
| | - M Alam
- The Brain Tumour charity, Fleet, United Kingdom
| | - M Williams
- Computational Oncology Laboratory, Imperial College London, London, United Kingdom
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Piccini I, Brunken L, Chéret J, Ghatak S, Ramot Y, Alam M, Purba TS, Hardman J, Erdmann H, Jimenez F, Paus R, Bertolini M. PPARγ signaling protects hair follicle stem cells from chemotherapy-induced apoptosis and epithelial-mesenchymal transition. Br J Dermatol 2021; 186:129-141. [PMID: 34496034 DOI: 10.1111/bjd.20745] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Permanent chemotherapy-induced alopecia (pCIA), for which preventive interventions remain limited, can manifest with scarring. While the underlying pathomechanisms of pCIA are unclear, depletion of epithelial hair follicle (HF) stem cells (eHFSCs) is likely to play a role. OBJECTIVES To explore the hypothesis that eHFSCs undergo pathological epithelial-mesenchymal transition (EMT) besides apoptosis in pCIA, thus explaining the scarring phenotype. Furthermore, we tested whether a PPARγ modulator can prevent pCIA-associated pathomechanisms. METHODS Organ-cultured human scalp HFs were treated with the cyclophosphamide metabolite, 4-hydroperoxycyclophosphamide (4-HC). Additionally, HFs were pre-treated with the agnostic PPARγ modulator, N-Acetyl-GED-0507-34-Levo (NAGED), which we had previously shown to promote K15 expression and antagonize EMT in eHFSCs. RESULTS In accordance with anticipated hair bulb cytotoxicity, dystrophy and catagen induction, 4-HC promoted apoptosis along with increased p53 expression, DNA damage and pathological EMT in keratin 15+ (K15) bulge eHFSCs, as evidenced by decreased E-cadherin expression and the appearance of fibronectin- and vimentin-positive cells in the bulge. Pre-treatment with NAGED protected from 4-HC-induced hair bulb cytotoxicity/dystrophy, and halted apoptosis, p53 up-regulation, and EMT in the bulge, thereby significantly preventing the depletion of K15+ human eHFSCs ex vivo. CONCLUSIONS A cyclophosphamide metabolite alone suffices to damage and deplete human scalp eHFSCs by promoting apoptosis, DNA damage, and EMT ex vivo. Therefore, pCIA-therapeutic strategies need to target these pathological processes. Our data introduce the stimulation of PPARγ signaling as a novel intervention strategy for the prevention of pCIA, given the ability of NAGED to prevent chemotherapy-induced eHFSCs damage ex vivo.
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Affiliation(s)
- I Piccini
- Monasterium Laboratory, Münster, Germany
| | - L Brunken
- Monasterium Laboratory, Münster, Germany
| | - J Chéret
- Monasterium Laboratory, Münster, Germany.,Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - S Ghatak
- Monasterium Laboratory, Münster, Germany
| | - Y Ramot
- Department of Dermatology, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - M Alam
- Monasterium Laboratory, Münster, Germany.,Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Spain.,Dept. of Dermatology & Venereology, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Doha, Qatar
| | - T S Purba
- Centre for Dermatology Research, University of Manchester, NIHR Biomedical Research Centre, Manchester, UK
| | - J Hardman
- Centre for Dermatology Research, University of Manchester, NIHR Biomedical Research Centre, Manchester, UK.,St John's Institute of Dermatology, King's College London, London, United Kingdom
| | | | - F Jimenez
- Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Spain.,Mediteknia Dermatology Clinic, Las Palmas de Gran Canaria, Spain
| | - R Paus
- Monasterium Laboratory, Münster, Germany.,Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Centre for Dermatology Research, University of Manchester, NIHR Biomedical Research Centre, Manchester, UK
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Hajmohammadi E, Molaei T, Mowlaei SH, Alam M, Abbasi K, Khayatan D, Rahbar M, Tebyanian H. Sonodynamic therapy and common head and neck cancers: in vitro and in vivo studies. Eur Rev Med Pharmacol Sci 2021; 25:5113-5121. [PMID: 34486685 DOI: 10.26355/eurrev_202108_26522] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Carcinogenesis is a complex multi-stage process associated with abnormal oncogenic signals in various signaling pathways. HNSCC (Head and neck squamous cell carcinoma) includes the majority of head and neck cancers (HNC). Also, HNSCC indicates a tumors heterogeneous group that derives from the squamous epithelium of the oropharynx, hypopharynx, oral cavity, and larynx. The main cancer management approach contains chemotherapy, radiation, and surgery separately or in combination. Each therapeutic approach has a limitation that influences cancer therapy procedures. Different treatment manners, stimuli-responsive therapeutic methods can improve on-target responses and reduce side effects. Sonodynamic therapy (ST) shows promising potential as an alternative treatment for cancer in the last few years. There is a hypothesis that shows ST using sonosenitizer in combination with low-intensity ultrasound (LIUS) could be useful in all kinds of cancer without focusing on specific target proteins, molecules, and/or genes. This review study discussed the application of ST for the treatment, ST mechanisms, and also, advances in the treatment of HNCs approaches in the recent decades.
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Affiliation(s)
- E Hajmohammadi
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran.
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21
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Hossain M, Arafat M, Alam M, Hossain M. Effect of solvent types on the antioxidant activity and total flavonoids of some Bangladeshi legumes. Food Res 2021. [DOI: 10.26656/fr.2017.5(4).035] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In this study, an attempt was made to estimate the antioxidant activity of some popular
Bangladeshi legumes by employing DPPH radical scavenging assay, total phenolic
content (TPC), and ferric reducing antioxidant assay (FRAP). The extraction efficiency
and total flavonoid content (TFC) of hyacinth bean (Lablab niger), kidney bean
(Phaseolus vulgaris), black gram (Vigna radiate), mung bean (Vigna mungo), and green
pea (Pisum sativam) by different solvents were also examined. Extraction was done using
80% acetone, ethanol, and methanol as solvent. The maximum and minimum DPPH
scavenging activity was shown by mung bean (27.67±1.53%) and Hyacinth bean
(4.33±1.53%), respectively using ethanol as solvent. The highest and lowest FRAP value
was recorded 89.60±0.80 μg AAE/mL for green pea and 35.11±1.39 μg AAE/mL for
mung bean, respectively with ethanol solvent. For TPC, green pea with ethanol solvent
showed the highest value (1045.92±21.30 mg GAE/100 g), and mung bean with ethanol
solvent exhibited the lowest value (415.92±1.44 mg GAE/100 g). For TFC, black gram
with ethanol solvent exhibited the highest value (342.21±3.05 mg QE/100 g), while mung
bean with acetone solvent exhibited the lowest value (77.38±0.80 mg QE/100 g).
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22
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Hazratullah, Muhammad A, Alam M, Ahmad I, Jalal A. Role of beneficial microbes with nitrogen and phosphorous levels on canola productivity. BRAZ J BIOL 2021; 82:e227703. [PMID: 34287525 DOI: 10.1590/1519-6984.227703] [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: 08/22/2019] [Accepted: 11/05/2020] [Indexed: 02/15/2024] Open
Abstract
A research was conducted to evaluate the impact of various nitrogen and phosphorus levels along with beneficial microbes to enhance canola productivity. The research was carried out at Agronomy Research Farm, The University of Agriculture Peshawar in winter 2016-2017. The experiment was conducted in randomized complete block factorial design. The study was comprised of three factors including nitrogen (60, 120 and 180 kg ha-1), phosphorous (70, 100 and 130 kg ha-1) and beneficial microbes (with and without BM). A control treatment with no N, P and BM was also kept for comparison. Application of beneficial microbes significantly increased pods plant, seed pod, seed filling duration, 1000 seed weight, biological yield and seed yield as compared to control plots. Nitrogen applied at the rate of 180 kg ha-1 increased pods plant-1, seed pod, seed filling duration, seed weight, biological yield and seed yield. Maximum pods plant-1, seed pod, early seed filling, heavier seed weight, biological yield, seed yield, and harvest index were observed in plots treated with 130 kg.ha-1 phosphorous. As comparison, the combine treated plots have more pods plant-1, seeds pod-1, seed filling duration, heaviest seeds, biological yield, seed yield and harvest index as compared to control plots. It is concluded that application of beneficial microbes with N and P at the rate of 180 kg ha-1 and 130 kg ha-1, respectively, increased yield and its attributes for canola.
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Affiliation(s)
- Hazratullah
- The University of Agriculture, Department of Agronomy, Peshawar, Pakistan
| | - A Muhammad
- The University of Agriculture, Department of Agronomy, Peshawar, Pakistan
| | - M Alam
- The University of Agriculture, Horticulture Department, Peshawar, Pakistan
| | - I Ahmad
- The University of Agriculture, Horticulture Department, Peshawar, Pakistan
| | - A Jalal
- The University of Agriculture, Institute of Biotechnology & Genetic Engineering, Peshawar, Pakistan
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23
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Roy M, Imran M, Alam M, Rahman M. Effect of boiling and roasting on physicochemical and antioxidant properties of dark red kidney bean (Phaseolus vulgaris). Food Res 2021. [DOI: 10.26656/fr.2017.5(3).673] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The effects of two processing methods (boiling and roasting) on physicochemical qualities
of dark red kidney bean (Phaseolus vulgaris) were investigated. Changes in total
polyphenol content (TPC) and antioxidant activity due to processing were also analyzed
by using Folin–Ciocaltue method and 1,1 diphenyl-2-picrylhydrazyl (DPPH) assay,
respectively. Analysis of physicochemical properties exhibited substantial variations
(p<0.05) in the levels of moisture, ash, protein, fat, carbohydrate, gross energy and pH of
raw and processed beans. Meanwhile, there was no considerable difference (p<0.05) in the
fibre content of fresh and processed beans. Investigation of total phenolic content showed
the significant (p<0.05) reduction of phenolic compounds in boiled (5.53±0.74 mg GAE/
g) and roasted (8.15±1.60 mg GAE/g) beans than raw samples (12.55±1.42 mg GAE/g).
DPPH radical scavenging activity was also decreased significantly (p<0.05) in boiled and
roasted samples with IC50 value of 0.0608±0.0765 mg/mL and 0.0523±0.0026 mg/mL,
respectively. In the case of household cooking, keeping boiling water would be advised
for the preservation of minerals, vitamins and phenolic compounds. The roasting process
may be used to develop high-quality health-promoting dark red kidney bean products.
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Lee MH, Kang BY, Wong CC, Li AW, Naseer N, Ibrahim SA, Keimig EL, Poon E, Alam M. A systematic review of autologous adipose-derived stromal vascular fraction (SVF) for the treatment of acute cutaneous wounds. Arch Dermatol Res 2021; 314:417-425. [PMID: 34047823 DOI: 10.1007/s00403-021-02242-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/27/2021] [Accepted: 05/11/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Stromal vascular fraction (SVF), derived enzymatically or mechanically from adipose tissue, contains a heterogenous population of cells and stroma, including multipotent stem cells. The regenerative capacity of SVF may potentially be adapted for a broad range of clinical applications, including the healing of acute cutaneous wounds. OBJECTIVE To evaluate the available literature on the efficacy and safety of autologous adipose-derived stromal vascular fraction (SVF) for the treatment of acute cutaneous wounds in humans. METHODS A systematic review of the literature utilizing MEDLINE, Embase, and the Cochrane Central Register of Controlled Trials was performed to identify published clinical trials of autologous adipose-derived SVF or similar ADSC-containing derivatives for patients with acute cutaneous wounds. This was supplemented by searches for ongoing clinical trials through ClinicalTrials.gov and the WHO International Clinical Trials Registry Platform. RESULTS 872 records were initially retrieved. Application of inclusion and exclusion criteria yielded 10 relevant studies: two completed non-randomized controlled trials and eight ongoing clinical trials. Both completed studies reported a statistically significant benefit in percentage re-epithelialization and time to healing for the SVF treatment arms. Safety information for SVF was not provided. Ongoing clinical trials were assessing outcomes such as safety, patient and observer reported scar appearance, wound healing rate, and wound epithelization. CONCLUSION In the context of substantial limitations in the quantity and quality of available evidence, the existing literature suggests that SVF may be a useful treatment for acute cutaneous wounds in humans. More clinical trials with improved outcome measures and safety assessment are needed.
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Affiliation(s)
- M H Lee
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA
| | - B Y Kang
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA
| | - C C Wong
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA
| | - A W Li
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA
| | - N Naseer
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA
| | - Sarah A Ibrahim
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA
| | - E L Keimig
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA
| | - E Poon
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA
| | - M Alam
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, 676 N Saint Clair Street, Suite 1600, Chicago, IL, 60611, USA.
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
- Department of Otolaryngology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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Ibrahim S, Kang B, Schlessinger D, Kurta A, Yanes A, Chen B, Lazaroff J, Cotseones J, Chiren S, Godinez-Puig V, Maher I, Sobanko J, Cartee T, Keimig E, Poon E, Alam M. 457 Outcomes reported in clinical trials of basal cell carcinoma: A systematic review. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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Alam M, Etzkorn J, Albertini J, Bordeaux J, Council L, Maher I, Nehal K, Brodland D, Haas A, Ibrahim S, Keimig E, Poon E, Worley B. 407 Acceptable delay between diagnosis and treatment of melanoma, cutaneous squamous cell carcinoma, and basal cell carcinoma. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Kang B, Ibrahim S, Shokeen D, Schlessinger D, Maher I, Sobanko J, Cartee T, Keimig E, Poon E, Alam M. 442 Outcomes reported in clinical trials of postinflammatory hyperpigmentation: A systematic review. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.465] [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: 10/21/2022]
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Lee M, Kang B, Wong C, Li A, Naseer N, Keimig E, Poon E, Alam M. 614 A systematic review of autologous adipose-derived stromal vascular fraction (SVF) for the treatment of acute cutaneous wounds. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.643] [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: 10/21/2022]
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29
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Ibrahim S, Kang B, Schlessinger D, Yanes A, Cotseones J, Ashchyan H, Kurta A, Franklin M, Chen B, Maher I, Sobanko J, Cartee T, Keimig E, Poon E, Alam M. 409 Outcomes reported in clinical trials of facial aging: A systematic review. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Kang B, Li A, Lee M, Wong C, Naseer N, Ibrahim S, Keimig E, Poon E, Alam M. 576 A systematic review of autologous adipose-derived stromal vascular fraction (SVF) for the treatment of noncicatricial alopecia. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sarkar A, Rahman S, Roy M, Alam M, Hossain M, Ahmed T. Impact of blanching pretreatment on physicochemical properties, and drying characteristics of cabbage (Brassica oleracea). Food Res 2021. [DOI: 10.26656/fr.2017.5(2).556] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cabbage (Brassica oleracea) is popular winter vegetables cultivated all over Bangladesh
and contains essential nutrients. This study aimed to evaluate the efficacy of pre-blanching
on the preservation of cabbage by drying. In this research work, cabbage was blanched at
80°C, 90°C, and 100°C temperature for 12, 8, and 2 mins, respectively. Then the samples
were dried at 60°C maintaining 60% relative humidity. The moisture and ash content of
untreated and treated dried samples was in the range of 16.07±0.04 to 10.80±0.01% and
5.71±0.06 to 3.81±0.02%, respectively. The total phenolic content in cabbage was
74.47±0.63 mg GAE/100g at 100°C blanching temperature for a short time of 2 mins,
which was higher compared to 61.91±0.48 mg GAE/100g at 80°C for 12 mins. It was
observed that the antioxidant activity and two water-soluble vitamins-ascorbic acid and
beta carotene decreased in pre-blanched dried samples in contrast with fresh ones.
Blanching at higher water temperature and a short period was found useful for the
retention of total phenolic content and greenness of cabbage. Blanching pre-treatments
were also found to have better color retention capacity than untreated dried cabbage. A
proper combination of drying time and temperature, along with the incorporation of
blanching pretreatment, might be useful to preserve cabbage for a long time.
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Saima U, Alam M, Akter S. Survival of escherichia coli in Water Microcosm Study and Rethinking its Use as Indicator. Microbiology (Reading) 2021. [DOI: 10.1134/s0026261721020107] [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: 11/23/2022] Open
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33
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Reynolds KA, Schlessinger DI, Yanes AF, Godinez-Puig V, Chen BR, Kurta AO, Cotseones JK, Chiren SG, Iyengar S, Ibrahim SA, Kang BY, Worley B, Behshad R, DeHoratius DM, Denes P, Drucker AM, Dzubow LM, Etzkorn JR, Harwood CA, Kim JYS, Lawrence N, Lee EH, Lissner GS, Marghoob AA, Guminiski A, Matin RN, Mattox AR, Mittal BB, Thomas JR, Zhou XA, Zloty D, Hughes BGM, Nottage MK, Green AC, Testori AAE, Argenziano G, Longo C, Zalaudek I, Lebbe C, Malvehy J, Saiag P, Cernea SS, Schmitt J, Kirkham JJ, Poon E, Sobanko JF, Cartee TV, Maher IA, Alam M. Development of a core outcome set for cutaneous squamous cell carcinoma trials: identification of core domains and outcomes. Br J Dermatol 2021; 184:1113-1122. [PMID: 33236347 DOI: 10.1111/bjd.19693] [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] [Accepted: 11/20/2020] [Indexed: 01/16/2023]
Abstract
BACKGROUND The lack of uniformity in the outcomes reported in clinical studies of the treatment of cutaneous squamous cell carcinoma (cSCC) complicates efforts to compare treatment effectiveness across trials. OBJECTIVES To develop a core outcome set (COS), a minimum set of agreed-upon outcomes to be measured in all clinical trials of a given disease or outcome, for the treatment of cSCC. METHODS One hundred and nine outcomes were identified via a systematic literature review and interviews with 28 stakeholders. After consolidation of this long list, 55 candidate outcomes were rated by 19 physician and 10 patient stakeholders, in two rounds of Delphi exercises. Outcomes scored 'critically important' (score of 7, 8 or 9) by ≥ 70% of patients and ≥ 70% of physicians were provisionally included. At the consensus meeting, after discussion and voting of 44 international experts and patients, the provisional list was reduced to a final core set, for which consensus was achieved among all meeting participants. RESULTS A core set of seven outcomes was finalized at the consensus meeting: (i) serious or persistent adverse events, (ii) patient-reported quality of life, (iii) complete response, (iv) partial response, (v) recurrence-free survival, (vi) progression-free survival and (vii) disease-specific survival. CONCLUSIONS In order to increase the comparability of results across trials and to reduce selective reporting bias, cSCC researchers should consider reporting these core outcomes. Further work needs to be performed to identify the measures that should be reported for each of these outcomes.
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Affiliation(s)
- K A Reynolds
- Department of Dermatology, Northwestern University, Chicago, IL, USA.,University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - D I Schlessinger
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - A F Yanes
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - V Godinez-Puig
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - B R Chen
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - A O Kurta
- Department of Dermatology, Saint Louis University, St Louis, MO, USA
| | - J K Cotseones
- Medical & Cosmetic Dermatology Service, Northwestern Medicine Regional Medical Group, Naperville, IL, USA
| | - S G Chiren
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - S Iyengar
- Department of Dermatology, West Virginia University, Morgantown, WV, USA
| | - S A Ibrahim
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - B Y Kang
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - B Worley
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - R Behshad
- Department of Dermatology, Saint Louis University, St Louis, MO, USA
| | - D M DeHoratius
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - P Denes
- Division of Cardiology, Northwestern University, Chicago, IL, USA
| | - A M Drucker
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, ON, Canada.,Division of Dermatology, Department of Medicine and Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
| | | | - J R Etzkorn
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - C A Harwood
- Department of Dermatology, Royal London Hospital, Barts Health NHS Trust, London, UK.,Centre for Cell Biology and Cutaneous Research, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - J Y S Kim
- Division of Plastic and Reconstructive Surgery, Northwestern University, Chicago, IL, USA
| | - N Lawrence
- Division of Dermatologic Surgery, Cooper University Hospital, Camden, NJ, USA
| | - E H Lee
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - G S Lissner
- Department of Ophthalmology, Northwestern University, Chicago, IL, USA
| | - A A Marghoob
- Department of Dermatology, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - A Guminiski
- Department of Medical Oncology, Royal North Shore and Mater Hospitals, Sydney, Australia
| | - R N Matin
- Department of Dermatology, Churchill Hospital, Oxford, UK
| | - A R Mattox
- Department of Dermatology, University of Minnesota, Minneapolis, MN, USA
| | - B B Mittal
- Department of Radiation Oncology, Northwestern University, Chicago, IL, USA
| | - J R Thomas
- Department of Otolaryngology-Head and Neck Surgery, Northwestern University, Chicago, IL, USA
| | - X A Zhou
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - D Zloty
- Department of Dermatology & Skin Science, University of British Columbia, Vancouver, BC, Canada
| | - B G M Hughes
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia.,Department of Medical Oncology, The Prince Charles Hospital, Brisbane, QLD, Australia.,Cancer Care Services, Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - M K Nottage
- Cancer Care Services, Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - A C Green
- Department of Population Health, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.,CRUK Manchester Institute and University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - A A E Testori
- Division of Dermatology, Fondazione IRCCS, Policlinico san Matteo, Pavia, Italy
| | - G Argenziano
- Dermatology Unit, University of Campania, Naples, Italy
| | - C Longo
- Department of Dermatology, University of Modena and Reggio Emilia, Modena, Italy.,Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Centro Oncologico ad Alta Tecnologia Diagnostica-Dermatologia, Reggio Emilia, Italy
| | - I Zalaudek
- Department of Dermatology, Medical University of Trieste, Trieste, Italy
| | - C Lebbe
- APHP Department of Dermatology, Saint-Louis Hospital, INSERM U976, Université de Paris, Paris, France
| | - J Malvehy
- Department of Dermatology, Hospital Clinic of Barcelona, IDIBAPS and CIBER de Enfermedades Raras, Barcelona, Spain
| | - P Saiag
- University Department of Dermatology, Université de Versailles-Saint Quentin en Yvelines, APHP, Boulogne, France
| | - S S Cernea
- Dermatology Department of Hospital do Servidor Público Municipal de São Paulo, São Paulo, SP, Brazil
| | - J Schmitt
- Center for Evidence-Based Healthcare, Medical Faculty, Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - J J Kirkham
- Centre for Biostatistics, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - E Poon
- Department of Dermatology, Northwestern University, Chicago, IL, USA
| | - J F Sobanko
- Department of Dermatology, Perelman Center for Advanced Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA.,Division of Dermatologic Surgery, Department of Dermatology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - T V Cartee
- Department of Dermatology, Penn State College of Medicine, Hershey, PA, USA
| | - I A Maher
- Department of Dermatology, University of Minnesota, Minneapolis, MN, USA
| | - M Alam
- Department of Dermatology, Northwestern University, Chicago, IL, USA.,Department of Otolaryngology-Head and Neck Surgery, Northwestern University, Chicago, IL, USA.,Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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Alam M, Khan MA, Khan RU. On Upper k-Record Values from the Generalized Linear Exponential Distribution. JSTA 2021. [DOI: 10.2991/jsta.d.210216.001] [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: 11/01/2022] Open
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35
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Abstract
This survey presents a review of state-of-the-art deep neural network architectures, algorithms, and systems in vision and speech applications. Recent advances in deep artificial neural network algorithms and architectures have spurred rapid innovation and development of intelligent vision and speech systems. With availability of vast amounts of sensor data and cloud computing for processing and training of deep neural networks, and with increased sophistication in mobile and embedded technology, the next-generation intelligent systems are poised to revolutionize personal and commercial computing. This survey begins by providing background and evolution of some of the most successful deep learning models for intelligent vision and speech systems to date. An overview of large-scale industrial research and development efforts is provided to emphasize future trends and prospects of intelligent vision and speech systems. Robust and efficient intelligent systems demand low-latency and high fidelity in resource-constrained hardware platforms such as mobile devices, robots, and automobiles. Therefore, this survey also provides a summary of key challenges and recent successes in running deep neural networks on hardware-restricted platforms, i.e. within limited memory, battery life, and processing capabilities. Finally, emerging applications of vision and speech across disciplines such as affective computing, intelligent transportation, and precision medicine are discussed. To our knowledge, this paper provides one of the most comprehensive surveys on the latest developments in intelligent vision and speech applications from the perspectives of both software and hardware systems. Many of these emerging technologies using deep neural networks show tremendous promise to revolutionize research and development for future vision and speech systems.
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Affiliation(s)
| | - M. D. Samad
- Department of Computer Science, Tennessee State University, Nashville, TN, 37209
| | | | | | - K. M. Iftekharuddin
- Department of Computer Science, Tennessee State University, Nashville, TN, 37209
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Alam M, Wiles R, Rooney P, Ahmed S. Laparoscopic drainage of an intra-abdominal desmoid abscess - a video vignette. Colorectal Dis 2020; 22:2359. [PMID: 32939949 DOI: 10.1111/codi.15363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/26/2020] [Accepted: 08/10/2020] [Indexed: 01/05/2023]
Affiliation(s)
- M Alam
- ST2 General Surgery, Department of Colorectal Surgery, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
| | - R Wiles
- Consultant Gastro-Intestinal Radiologist, Department of Radiology, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
| | - P Rooney
- Consultant Colorectal Surgeon, Department of Colorectal Surgery, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
| | - S Ahmed
- Consultant Colorectal Surgeon, Department of Colorectal Surgery, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
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Tai A, Singh M, Binko J, Lilly K, Chang S, Bowles S, Alam M. 69TiP MADELINE Asia: A mobile app-based prospective observational study of patient reported outcomes in advanced breast cancer in Asia. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.089] [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] Open
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38
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Alam M, Ahmad FU, Mazid R, Roy S, Al-Maruf A, Rasheduzzaman M, Hoque N, Ahmed S, Nasreen SA, Rahman MS, Paul SK, Kobayashi N. Molecular Detection of Human Brucellosis among Patients with Pyrexia of Unknown Origin. Mymensingh Med J 2020; 29:771-778. [PMID: 33116076] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This study describes the molecular detection of human brucellosis among patients with pyrexia of unknown origin. It was a cross-sectional descriptive study and was carried out in the Department of Microbiology, Mymensingh Medical College, Mymensingh, Bangladesh. Non-probability purposive type of sampling technique was used. Blood samples were collected from 400 pyretic patients from September 2018 to August 2019. BCSP31 Brucella genus-specific TaqMan real-time PCR and SYBR Green real-time PCR were undertaken for molecular detection. Out of 400 samples, 22 (5.5%) samples found BCSP31 Brucella genus-specific real-time PCR positive. The study revealed that a considerable number of brucellosis is present in rural areas among risk as well as non-risk group study population having definite male predominancy, most prone to develop among >40-80 years age group. Brucella genus and species-specific real-time PCR might be performed for confirmation and also to avoid unjustified costs, drug toxicity, and un-masking of other potentially dangerous diseases.
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Affiliation(s)
- M Alam
- Dr Mahbubul Alam, MD Resident, Department of Microbiology, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Winter L, Saryyeva A, Schwabe K, Heissler HE, Runge J, Alam M, Heitland I, Kahl KG, Krauss JK. Long-Term Deep Brain Stimulation in Treatment-Resistant Obsessive-Compulsive Disorder: Outcome and Quality of Life at Four to Eight Years Follow-Up. Neuromodulation 2020; 24:324-330. [PMID: 32667114 DOI: 10.1111/ner.13232] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 03/24/2020] [Revised: 05/20/2020] [Accepted: 06/01/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND Obsessive compulsive disorder (OCD) is a severe disabling disease, and around 10% of patients are considered to be treatment-resistant (tr) in spite of guideline-based therapy. Deep brain stimulation (DBS) has been proposed as a promising treatment for patients with trOCD. However, the optimal site for stimulation is still a matter of debate, and clinical long-term follow-up observations including data on quality of life are sparse. We here present six trOCD patients who underwent DBS with electrodes placed in the bed nucleus of the stria terminalis/anterior limb of the internal capsule (BNST/ALIC), followed for four to eight years after lead implantation. MATERIALS AND METHODS In this prospective observational study, six patients (four men, two women) aged 32-51 years and suffering from severe to extreme trOCD underwent DBS of the BNST/ALIC. Symptom severity was assessed using the Yale-Brown Obsessive Compulsive Scale (Y-BOCS), and quality of life using the World Health Organization Quality of Life assessment scale (WHO-QoL BREF). Follow-up was obtained at least for four years in all patients. RESULTS With chronic DBS for four to eight years, four of the six patients had sustained improvement. Two patients remitted and two patients responded (defined as >35% symptom reduction), while the other two patients were considered nonresponders on long-term. Quality of life markedly improved in remitters and responders. We did not observe peri-interventional side effects or adverse effects of chronic stimulation. CONCLUSIONS Chronic DBS of ALIC provides long-term benefit up to four to eight years in trOCD, although not all patients take profit. Targeting the BNST was not particularly relevant since no patient appeared to benefit from direct stimulation of the BNST. Quality of life improved in DBS responders, documented by improved QoL scores and, even more important, by regaining of autonomy and improving psychosocial functioning.
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Affiliation(s)
- Lotta Winter
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Assel Saryyeva
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Kerstin Schwabe
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Hans E Heissler
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Joachim Runge
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Mesbah Alam
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Ivo Heitland
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Kai G Kahl
- Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Joachim K Krauss
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
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Helgers SOA, Al Krinawe Y, Alam M, Krauss JK, Schwabe K, Hermann EJ, Al-Afif S. Lesion of the Fastigial Nucleus in Juvenile Rats Deteriorates Rat Behavior in Adulthood, Accompanied by Altered Neuronal Activity in the Medial Prefrontal Cortex. Neuroscience 2020; 442:29-40. [PMID: 32621846 DOI: 10.1016/j.neuroscience.2020.06.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 11/16/2022]
Abstract
The cerebellar cognitive affective syndrome may result from various cerebellar injuries. Although it is not exactly known which anatomical structures are involved, the fastigial nucleus has been thought to play a pivotal role according to recent studies. Here we investigate whether bilateral fastigial nucleus lesions in juvenile rats affect cognitive-associative and limbic related functions in adulthood. Furthermore, potential effects on the neuronal activity in the medial prefrontal cortex (mPFC) and local field coherence with the sensorimotor cortex (SMCtx) were evaluated. The fastigial nucleus was lesioned bilaterally by thermocoagulation via stereotaxically inserted electrodes in 23-day old male Sprague Dawley rats. Naïve and sham-lesioned rats (electrodes inserted above the nucleus and no electrical current applied) served as controls. As adults, all groups were tested for cognitive-associative function, social behavior, and anxiety. Thereafter, electrophysiological recordings were obtained under urethane anesthesia. Finally, lesions and recording sites were histologically verified. Spatial learning in a radial maze test and learning in an operant learning paradigm was disturbed in rats with fastigial lesions. Furthermore, in the elevated plus maze anxiety was enhanced, whereas social behavior was not affected. Electrophysiological recordings showed enhanced local field coherence between mPFC and SMCtx across all frequency bands. Impaired cognitive and affective functions together with enhanced coherence between mPFC and SMCtx after bilateral fastigial nucleus lesions indicate that the fastigial nucleus contribute to the development of the cerebellar cognitive affective syndrome and associated motor behavior.
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Affiliation(s)
- Simeon O A Helgers
- Department of Neurosurgery, Hannover Medical School, Hannover, Lower Saxony, Germany; DFG Cluster of Excellence, Hearing4all, Germany
| | - Yazeed Al Krinawe
- Department of Neurosurgery, Hannover Medical School, Hannover, Lower Saxony, Germany
| | - Mesbah Alam
- Department of Neurosurgery, Hannover Medical School, Hannover, Lower Saxony, Germany
| | - Joachim K Krauss
- Department of Neurosurgery, Hannover Medical School, Hannover, Lower Saxony, Germany
| | - Kerstin Schwabe
- Department of Neurosurgery, Hannover Medical School, Hannover, Lower Saxony, Germany; DFG Cluster of Excellence, Hearing4all, Germany
| | - Elvis J Hermann
- Department of Neurosurgery, Hannover Medical School, Hannover, Lower Saxony, Germany
| | - Shadi Al-Afif
- Department of Neurosurgery, Hannover Medical School, Hannover, Lower Saxony, Germany.
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Harikumar V, Reynolds K, Hsu D, Chen B, Lazaroff J, Gwillim E, Poon E, Alam M. LB927 Predictors of post-operative wound dehiscence: An analysis of the northwestern medicine enterprise data warehouse (nmedw). J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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Hawkshaw N, Hardman J, Alam M, Jimenez F, Paus R. 涉及毛发生长周期的一组基因的研究. Br J Dermatol 2020. [DOI: 10.1111/bjd.19006] [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: 11/28/2022]
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43
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Hawkshaw N, Hardman J, Alam M, Jimenez F, Paus R. A study of a group of genes involved in the hair growth cycle. Br J Dermatol 2020. [DOI: 10.1111/bjd.18995] [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: 11/28/2022]
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44
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Abstract
Compromised Na+/K+-ATPase function is associated with the occurrence of spreading depolarization (SD). Mutations in ATP1A2, the gene encoding the α2 isoform of the Na+/K+-ATPase, were identified in patients with familial hemiplegic migraine type 2 (FHM2), a Mendelian model disease for SD. This suggests a distinct role for the α2 isoform in modulating SD susceptibility and raises questions about underlying mechanisms including the roles of other Na+/K+-ATPase α isoforms. Here, we investigated the effects of genetic ablation and pharmacological inhibition of α1, α2, and α3 on SD using heterozygous knock-out mice. We found that only α2 heterozygous mice displayed higher SD susceptibility when challenged with prolonged extracellular high potassium concentration ([K+]o), a pronounced post SD oligemia and higher SD speed in-vivo. By contrast, under physiological [K+]o, α2 heterozygous mice showed similar SD susceptibility compared to wild-type littermates. Deficiency of α3 resulted in increased resistance against electrically induced SD in-vivo, whereas α1 deficiency did not affect SD. The results support important roles of the α2 isoform in SD. Moreover, they suggest that specific experimental conditions can be necessary to reveal an inherent SD phenotype by driving a (meta-) stable system into decompensation, reminiscent of the episodic nature of SDs in various diseases.
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Affiliation(s)
- Clemens Reiffurth
- Department of Experimental Neurology, Charité-University Medicine Berlin, Berlin, Germany.,Center for Stroke Research, Charité-University Medicine Berlin, Berlin, Germany
| | - Mesbah Alam
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Mahdi Zahedi-Khorasani
- Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Sebastian Major
- Department of Experimental Neurology, Charité-University Medicine Berlin, Berlin, Germany.,Center for Stroke Research, Charité-University Medicine Berlin, Berlin, Germany.,Department of Neurology, Charité-University Medicine Berlin, Berlin, Germany
| | - Jens P Dreier
- Department of Experimental Neurology, Charité-University Medicine Berlin, Berlin, Germany.,Center for Stroke Research, Charité-University Medicine Berlin, Berlin, Germany.,Department of Neurology, Charité-University Medicine Berlin, Berlin, Germany.,Bernstein Center for Computational Neuroscience Berlin, Berlin, Germany.,Einstein Center for Neurosciences Berlin, Berlin, Germany
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45
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Iannuccilli J, Alam M, Collins S, Baird G. 3:18 PM Abstract No. 129 Effect of background liver cirrhosis on performance of a 915-MHz synchronous phased array microwave ablation device: 3D imaging assessment of ablation zone volume and morphology. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.161] [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: 10/25/2022] Open
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46
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Chéret J, Piccini I, Hardman-Smart J, Ghatak S, Alam M, Lehmann J, Jimenez F, Erdmann H, Poblet E, Botchkareva N, Paus R, Bertolini M. Preclinical evidence that the PPARγ modulator, N-Acetyl-GED-0507-34-Levo, may protect human hair follicle epithelial stem cells against lichen planopilaris-associated damage. J Eur Acad Dermatol Venereol 2020; 34:e195-e197. [PMID: 31774585 PMCID: PMC7154684 DOI: 10.1111/jdv.16114] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- J Chéret
- Monasterium Laboratory GmbH, Münster, Germany.,Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - I Piccini
- Monasterium Laboratory GmbH, Münster, Germany
| | - J Hardman-Smart
- Centre for Dermatology Research, University of Manchester, and NIHR Biomedical Research Centre, Manchester, UK
| | - S Ghatak
- Monasterium Laboratory GmbH, Münster, Germany
| | - M Alam
- Monasterium Laboratory GmbH, Münster, Germany.,Mediteknia Skin & Hair Lab, Las Palmas de Gran Canaria, Gran Canaria, Spain.,Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Gran Canaria, Spain
| | - J Lehmann
- Monasterium Laboratory GmbH, Münster, Germany
| | - F Jimenez
- Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Gran Canaria, Spain.,Mediteknia Dermatology Clinic, Las Palmas de Gran Canaria, Gran Canaria, Spain
| | | | - E Poblet
- Department of Pathology, University General Hospital of Murcia, Murcia, Spain
| | | | - R Paus
- Monasterium Laboratory GmbH, Münster, Germany.,Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Centre for Dermatology Research, University of Manchester, and NIHR Biomedical Research Centre, Manchester, UK
| | - M Bertolini
- Monasterium Laboratory GmbH, Münster, Germany
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Elle T, Alam M, Voigt C, Krauss JK, John N, Schwabe K. Deep brain stimulation of the thalamic centromedian-parafascicular nucleus improves behavioural and neuronal traits in a rat model of Tourette. Behav Brain Res 2020; 378:112251. [DOI: 10.1016/j.bbr.2019.112251] [Citation(s) in RCA: 5] [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] [Received: 07/05/2019] [Revised: 09/17/2019] [Accepted: 09/17/2019] [Indexed: 01/23/2023]
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48
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Ahmad FU, Paul SK, Aung MS, Mazid R, Alam M, Ahmed S, Haque N, Hossain MA, Paul S, Sharmin R, Kobayashi N. Co-circulation of dengue virus type 3-genotype I and type 2-Cosmopolitan genotype in 2018 outbreak in Dhaka, Bangladesh. New Microbes New Infect 2019; 33:100629. [PMID: 31908784 PMCID: PMC6940688 DOI: 10.1016/j.nmni.2019.100629] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 11/01/2019] [Accepted: 11/25/2019] [Indexed: 12/04/2022] Open
Abstract
Dengue virus (DENV) that caused an outbreak in Dhaka, Bangladesh during 2018 was analysed phylogenetically. DENV samples were classified into type 2-Cosmopolitan genotype (54%) and type 3-genotype I (46%), indicating co-circulation of two DENV types and resurgence of type 3 associated with genotype replacement.
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Affiliation(s)
- F U Ahmad
- Mymensingh Medical College, Mymensingh, Bangladesh
| | - S K Paul
- Mymensingh Medical College, Mymensingh, Bangladesh
| | - M S Aung
- Sapporo Medical University School of Medicine, Sapporo, Japan
| | - R Mazid
- Mymensingh Medical College, Mymensingh, Bangladesh
| | - M Alam
- Mymensingh Medical College, Mymensingh, Bangladesh
| | - S Ahmed
- Mymensingh Medical College, Mymensingh, Bangladesh
| | - N Haque
- Mymensingh Medical College, Mymensingh, Bangladesh
| | - M A Hossain
- Imperial Hospital Limited, Chittagong, Bangladesh
| | - S Paul
- Sir Salimullah Medical College, Dhaka, Bangladesh
| | - R Sharmin
- Dhaka Medical College, Dhaka, Bangladesh
| | - N Kobayashi
- Sapporo Medical University School of Medicine, Sapporo, Japan
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Alam M, Bertolini M, Gherardini J, Keren A, Ponce L, Chéret J, Alenfall J, Dunér P, Nilsson AH, Gilhar A, Paus R. An osteopontin-derived peptide inhibits human hair growth at least in part by decreasing fibroblast growth factor-7 production in outer root sheath keratinocytes. Br J Dermatol 2019; 182:1404-1414. [PMID: 31487385 DOI: 10.1111/bjd.18479] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Given that unwanted hair growth (hirsutism, hypertrichosis) can cause major psychological distress, new pharmacological treatment strategies with safe and effective hair growth inhibitors that do not destroy the hair follicle (HF) and its stem cells need to be developed. OBJECTIVES To establish if osteopontin-derived fragments may modulate human hair growth given that human HFs express the multifunctional, immunomodulatory glycoprotein, osteopontin. METHODS Our hypothesis was tested ex vivo and in vivo by using a newly generated, toxicologically well-characterized, modified osteopontin-derived peptide (FOL-005), which binds to the HF. RESULTS In organ-cultured human HFs and scalp skin, and in human scalp skin xenotransplants onto SCID mice, FOL-005 treatment (60 nmol L-1 to 3 μmol L-1 ) significantly promoted premature catagen development without reducing the number of keratin 15-positive HF stem cells or showing signs of drug toxicity. Genome-wide DNA microarray, quantitative reverse-transcriptase polymerase chain reaction and immunohistochemistry revealed decreased expression of the hair growth promoter, fibroblast growth factor-7 (FGF7) by FOL-005, while cotreatment of HFs with recombinant FGF7 partially abrogated FOL-005-induced catagen promotion. CONCLUSIONS With caveats in mind, our study identifies this osteopontin-derived peptide as an effective, novel inhibitory principle for human hair growth ex vivo and in vivo, which deserves systematic clinical testing in hirsutism and hypertrichosis. What's already known about this topic? The treatment of unwanted hair growth (hypertrichosis, hirsutism) lacks pharmacological intervention, with only few and often unsatisfactory treatments available. Osteopontin is prominently expressed in human HFs and has been reported to be elevated during catagen in the murine hair cycle. What does this study add? We tested the effects on hair growth of a novel, osteopontin-derived fragment (FOL-005) ex vivo and in vivo. In human hair follicles, high-dose FOL-005 significantly reduces hair growth both ex vivo and in vivo. What is the translational message? High-dose FOL-005 may provide a new therapeutic opportunity as a treatment for unwanted hair growth.
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Affiliation(s)
- M Alam
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany.,Mediteknia Skin & Hair Lab, Las Palmas de Gran Canaria, Spain.,Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Spain
| | - M Bertolini
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany
| | - J Gherardini
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany
| | - A Keren
- Laboratory for Skin Research, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - L Ponce
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany
| | - J Chéret
- Monasterium Laboratory - Skin and Hair Research Solutions GmbH, Münster, Germany
| | | | - P Dunér
- Follicum AB, Lund, Sweden.,Department of Clinical Sciences, Lund University, Lund, Sweden
| | - A H Nilsson
- Follicum AB, Lund, Sweden.,Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - A Gilhar
- Laboratory for Skin Research, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - R Paus
- Centre for Dermatology Research, University of Manchester and NIHR Manchester Biomedical Research Centre, Manchester, U.K.,Dr. Philip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, U.S.A
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50
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Hawkshaw N, Hardman J, Alam M, Jimenez F, Paus R. Deciphering the molecular morphology of the human hair cycle: Wnt signalling during the telogen–anagen transformation. Br J Dermatol 2019; 182:1184-1193. [DOI: 10.1111/bjd.18356] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2019] [Indexed: 12/24/2022]
Affiliation(s)
- N.J. Hawkshaw
- Centre for Dermatology Research The University of Manchester and NIHR Biomedical Research Centre Manchester U.K
| | - J.A. Hardman
- Centre for Dermatology Research The University of Manchester and NIHR Biomedical Research Centre Manchester U.K
| | - M. Alam
- Mediteknia Skin and Hair Lab Las Palmas de Gran Canaria Spain
- Monasterium Laboratory Skin and Hair Research Solutions GmbH Münster Germany
- Universidad Fernando Pessoa‐Canarias Las Palmas de Gran Canaria Spain
| | - F. Jimenez
- Mediteknia Skin and Hair Lab Las Palmas de Gran Canaria Spain
- Universidad Fernando Pessoa‐Canarias Las Palmas de Gran Canaria Spain
| | - R. Paus
- Centre for Dermatology Research The University of Manchester and NIHR Biomedical Research Centre Manchester U.K
- Monasterium Laboratory Skin and Hair Research Solutions GmbH Münster Germany
- Dr Phillip Frost Department of Dermatology and Cutaneous Surgery University of Miami Miller School of Medicine Miami FL U.S.A
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