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Mousavian Z, Fahimi-Kashani E, Nafisi V, Fahimi-Kashani N. Recent Advances in Development of Biosensors for Monitoring of Airborne Microorganisms. IRANIAN JOURNAL OF BIOTECHNOLOGY 2024; 22:e3722. [PMID: 39220332 PMCID: PMC11364924 DOI: 10.30498/ijb.2024.399314.3722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 09/12/2023] [Indexed: 09/04/2024]
Abstract
Background The early detection of infectious microorganisms is crucial for preventing and controlling the transmission of diseases. This article provides a comprehensive review of biosensors based on various diagnostic methods for measuring airborne pathogens. Objective This article aims to explore recent advancements in the field of biosensors tailored for the detection and monitoring of airborne microorganisms, offering insights into emerging technologies and their potential applications in environmental surveillance and public health management. Materials and Methods The study summarizes the research conducted on novel methods of detecting airborne microorganisms using different biological sensors, as well as the application of signal amplification technologies such as polymerase chain reaction (PCR), immunoassay reactions, molecular imprinted polymers (MIP) technique, lectin and cascade reactions, and nanomaterials. Results Antibody and PCR detection methods are effective for specific microbial strains, but they have limitations including limited stability, high cost, and the need for skilled operators with basic knowledge of the target structure. Biosensors based on MIP and lectin offer a low-cost, stable, sensitive, and selective alternative to antibodies and PCR. However, challenges remain, such as the detection of small gas molecules by MIP and the lower sensitivity of lectins compared to antibodies. Additionally, achieving high sensitivity in complex environments poses difficulties for both methods. Conclusion The development of sensitive, reliable, accessible, portable, and inexpensive biosensors holds great potential for clinical and environmental applications, including disease diagnosis, treatment monitoring, and point-of-care testing, offering a promising future in this field. This review presents an overview of biosensor detection principles, covering component identification, energy conversion principles, and signal amplification. Additionally, it summarizes the research and applications of biosensors in the detection of airborne microorganisms. The latest advancements and future trends in biosensor detection of airborne microorganisms are also analyzed.
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Affiliation(s)
- Zahra Mousavian
- Ph.D. Candidate, Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Ensieh Fahimi-Kashani
- Bachelor student, Faculty of Basic Sciences, Malayer International University, Hamedan
| | - Vahidreza Nafisi
- Associate Professor, Department of Electrical Engineering and Information Technology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Nafiseh Fahimi-Kashani
- Assistant Professor, Faculty of Chemistry, Isfahan University of Technology, Isfahan, Iran
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Dlatu N, Longo-Mbenza B, Apalata T. Models of integration of TB and HIV services and factors associated with perceived quality of TB-HIV integrated service delivery in O. R Tambo District, South Africa. BMC Health Serv Res 2023; 23:804. [PMID: 37501061 PMCID: PMC10375732 DOI: 10.1186/s12913-023-09748-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 06/24/2023] [Indexed: 07/29/2023] Open
Abstract
BACKGROUND Tuberculosis is the leading infectious cause of death among people living with HIV. Reducing morbidity and mortality from HIV-associated TB requires strong collaboration between TB and HIV services at all levels with fully integrated, people-centered models of care. METHODS This is a qualitative study design using principles of ethnography and the application of aggregate complexity theory. A total of 54 individual interviews with healthcare workers and patients took place in five primary healthcare facilities in the O.R. Tambo district. The participants were purposively selected until the data reached saturation point, and all interviews were tape-recorded. Quantitative analysis of qualitative data was used after coding ethnographic data, looking for emerging patterns, and counting the number of times a qualitative code occurred. A Likert scale was used to assess the perceived quality of TB/HIV integration. Regression models and canonical discriminant analyses were used to explore the associations between the perceived quality of TB and HIV integrated service delivery and independent predictors of interest using SPSS® version 23.0 (Chicago, IL) considering a type I error of 0.05. RESULTS Of the 54 participants, 39 (72.2%) reported that TB and HIV services were partially integrated while 15 (27.8%) participants reported that TB/HIV services were fully integrated. Using the Likert scale gradient, 23 (42.6%) participants perceived the quality of integrated TB/HIV services as poor while 13 (24.1%) and 18 (33.3%) perceived the quality of TB/HIV integrated services as moderate and excellent, respectively. Multiple linear regression analysis showed that access to healthcare services was significantly and independently associated with the perceived quality of integrated TB/HIV services following the equation: Y = 3.72-0.06X (adjusted R2 = 23%, p-value = 0.001). Canonical discriminant analysis (CDA) showed that in all 5 municipal facilities, long distances to healthcare facilities leading to reduced access to services were significantly more likely to be the most impeding factor, which is negatively influencing the perceived quality of integrated TB/HIV services, with functions' coefficients ranging from 9.175 in Mhlontlo to 16.514 in KSD (Wilk's Lambda = 0.750, p = 0.043). CONCLUSION HIV and TB integration is inadequate with limited access to healthcare services. Full integration (one-stop-shop services) is recommended.
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Affiliation(s)
- Ntandazo Dlatu
- Division of Public Health, Department of Community Medicine, Faculty of Health Sciences, Walter Sisulu University, Mthatha, South Africa
| | - Benjamin Longo-Mbenza
- Division of Public Health, Department of Community Medicine, Faculty of Health Sciences, Walter Sisulu University, Mthatha, South Africa
| | - Teke Apalata
- Division of Medical Microbiology, Department of Laboratory Medicine and Pathology, Faculty of Health Sciences, Walter Sisulu University and National Health Laboratory Services, Mthatha, South Africa.
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Xie X, Kong S, Cao W. Targeting protein glycosylation to regulate inflammation in the respiratory tract: novel diagnostic and therapeutic candidates for chronic respiratory diseases. Front Immunol 2023; 14:1168023. [PMID: 37256139 PMCID: PMC10225578 DOI: 10.3389/fimmu.2023.1168023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 05/02/2023] [Indexed: 06/01/2023] Open
Abstract
Protein glycosylation is a widespread posttranslational modification that can impact the function of proteins. Dysregulated protein glycosylation has been linked to several diseases, including chronic respiratory diseases (CRDs). CRDs pose a significant public health threat globally, affecting the airways and other lung structures. Emerging researches suggest that glycosylation plays a significant role in regulating inflammation associated with CRDs. This review offers an overview of the abnormal glycoenzyme activity and corresponding glycosylation changes involved in various CRDs, including chronic obstructive pulmonary disease, asthma, cystic fibrosis, idiopathic pulmonary fibrosis, pulmonary arterial hypertension, non-cystic fibrosis bronchiectasis, and lung cancer. Additionally, this review summarizes recent advances in glycomics and glycoproteomics-based protein glycosylation analysis of CRDs. The potential of glycoenzymes and glycoproteins for clinical use in the diagnosis and treatment of CRDs is also discussed.
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Affiliation(s)
- Xiaofeng Xie
- Shanghai Fifth People’s Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Siyuan Kong
- Shanghai Fifth People’s Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Weiqian Cao
- Shanghai Fifth People’s Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
- NHC Key Laboratory of Glycoconjugates Research, Fudan University, Shanghai, China
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Chanda-Kapata P, Ntoumi F, Kapata N, Lungu P, Mucheleng'anga LA, Chakaya J, Tembo J, Himwaze C, Ansumana R, Asogun D, Mfinanga S, Nyasulu P, Mwaba P, Yeboah-Manu D, Zumla A, Nachega JB. Tuberculosis, HIV/AIDS and Malaria Health Services in sub-Saharan Africa - A Situation Analysis of the Disruptions and Impact of the COVID-19 Pandemic. Int J Infect Dis 2022; 124 Suppl 1:S41-S46. [PMID: 35341998 PMCID: PMC8949686 DOI: 10.1016/j.ijid.2022.03.033] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The unprecedented and ongoing COVID-19 pandemic has exposed weaknesses in African countries' health systems. The impact of shifted focus on COVID-19 for the past 2 years on routine health services, especially those for the epidemics of Tuberculosis, HIV/AIDS and Malaria, have been dramatic in both quantity and quality. METHODS In this article, we reflect on the COVID-19 related disruptions on the Tuberculosis, HIV/AIDS and Malaria routine health services across Africa. RESULTS The COVID-19 pandemic resulted in disruptions of routine health services and diversion of already limited available resources in sub-Saharan Africa. As a result, disease programs like TB, malaria and HIV have recorded gaps in prevention and treatment with the prospects of reversing gains made towards meeting global targets. The extent of the disruption is yet to be fully quantified at country level as most data available is from modelling estimates before and during the pandemic. CONCLUSIONS Accurate country-level data is required to convince donors and governments to invest more into revamping these health services and help prepare for managing future pandemics without disruption of routine services. Increasing government expenditure on health is a critical part of Africa's economic policy. Strengthening health systems at various levels to overcome the negative impacts of COVID-19, and preparing for future epidemics will require strong visionary political leadership. Innovations in service delivery and technological adaptations are required as countries aim to limit disruptions to routine services.
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Affiliation(s)
| | - Francine Ntoumi
- Fondation Congolaise pour la Recherche Médicale (FCRM), Brazzaville, Republic of Congo; Institute for Tropical Medicine, University of Tübingen, Germany.
| | - Nathan Kapata
- National Public Health Institute, Ministry of Health, and UNZA-UCLMS Research and Training Program, Lusaka, Zambia.
| | - Patrick Lungu
- University of Zambia, School of Medicine, Department Internal Medicine, Lusaka, Zambia.
| | - Luchenga Adam Mucheleng'anga
- Ministry of Home Affairs, Office of the State Forensic Pathologist, and UNZA-UCLMS Research and Training Program, University Teaching Hospital, Lusaka, Zambia.
| | - Jeremiah Chakaya
- Department of Medicine, Therapeutics, Dermatology and Psychiatry, Kenyatta University, Nairobi, Kenya.
| | - John Tembo
- HERPEZ and UNZA-UCLMS Research and Training Program, University Teaching Hospital, Lusaka, Zambia.
| | - Cordelia Himwaze
- University Teaching Hospital, Department of Pathology and Microbiology; and UNZA-UCLMS Research and Training Program, University Teaching Hospital, Lusaka, Zambia.
| | - Rashid Ansumana
- Mercy Hospital Research Laboratory, Bo, Freetown, Sierra Leone.
| | - Danny Asogun
- Ambrose Alli University, Ekpoma and Irrua Specialist Teaching Hospital, Nigeria.
| | - Sayoki Mfinanga
- Muhimbili Medical Research Centre National Institute for Medical Research, Dar es Salaam, Tanzania.
| | - Peter Nyasulu
- Division of Epidemiology & Biostatistics, Faculty of Medicine; Health Sciences, Stellenbosch University, Cape Town, South Africa.
| | - Peter Mwaba
- Lusaka Apex Medical University, Faculty of Medicine, and UNZA-UCLMS Research and Training Project, Lusaka, Zambia.
| | - Dorothy Yeboah-Manu
- Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Ghana.
| | - Alimuddin Zumla
- Center for Clinical Microbiology, Division of Infection and Immunity, University College London, and NIHR Biomedical Research Centre, UCL Hospitals NHS Foundation Trust, London, United Kingdom; UNZA-UCLMS Research and Training Program Program, Lusaka, Zambia.
| | - Jean B Nachega
- Department of Medicine and Division of Infectious Diseases, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, South Africa; Depts of Epidemiology and International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA; Depts of Epidemiology, Infectious Diseases and Microbiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, USA.
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Gomes MS, Pereira L. Special Issue: From Host-Pathogen Interaction to Host-Directed Therapies. Microorganisms 2021; 9:microorganisms9122606. [PMID: 34946207 PMCID: PMC8707891 DOI: 10.3390/microorganisms9122606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 12/14/2021] [Indexed: 11/16/2022] Open
Affiliation(s)
- Maria Salomé Gomes
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
- Correspondence: (M.S.G.); (L.P.)
| | - Luisa Pereira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IPATIMUP—Instituto de Patologia e Imunologia Molecular, Universidade do Porto, 4200-135 Porto, Portugal
- Correspondence: (M.S.G.); (L.P.)
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Zhang Y, Wang L, Ocansey DKW, Wang B, Wang L, Xu Z. Mucin-Type O-Glycans: Barrier, Microbiota, and Immune Anchors in Inflammatory Bowel Disease. J Inflamm Res 2021; 14:5939-5953. [PMID: 34803391 PMCID: PMC8598207 DOI: 10.2147/jir.s327609] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/19/2021] [Indexed: 12/21/2022] Open
Abstract
Inflammatory bowel disease (IBD), which affects about 7 million people globally, is a chronic inflammatory condition of the gastrointestinal tract caused by gut microbiota alterations, immune dysregulation, and genetic and environmental factors. The association of microbial and immune molecules with mucin-type O-glycans has been increasingly noticed by researchers. Mucin is the main component of mucus, which forms a protective barrier between the microbiota and immune cells in the colon. Mucin-type O-glycans alter the diversity of gastrointestinal microorganisms, which in turn increases the level of O-glycosylation of host intestinal proteins via the utilization of glycans. Additionally, alterations in mucin-type O-glycans not only increase the activity and stability of immune cells but are also involved in the maintenance of intestinal mucosal immune tolerance. Although there is accumulating evidence indicating that mucin-type O-glycans play an important role in IBD, there is limited literature that integrates available data to present a complete picture of exactly how O-glycans affect IBD. This review emphasizes the roles of the mucin-type O-glycans in IBD. This seeks to provide a better understanding and encourages future studies on IBD glycosylation and the design of novel glycan-inspired therapies for IBD.
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Affiliation(s)
- Yaqin Zhang
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
| | - Lan Wang
- Danyang Blood Station, Zhenjiang, Jiangsu, 212300, People's Republic of China
| | - Dickson Kofi Wiredu Ocansey
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China.,Directorate of University Health Services, University of Cape Coast, PMB, Cape Coast, Ghana
| | - Bo Wang
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
| | - Li Wang
- Huai'an Maternity and Children Hospital, Huaian, Jiangsu, 223002, People's Republic of China
| | - Zhiwei Xu
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212013, People's Republic of China
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Moniz T, Lima SAC, Reis S. Protocol for the Isolation of Stratum Corneum from Pig Ear Skin: Evaluation of the Trypsin Digestion Conditions. Methods Protoc 2021; 4:mps4040080. [PMID: 34842773 PMCID: PMC8628882 DOI: 10.3390/mps4040080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/01/2021] [Accepted: 11/01/2021] [Indexed: 11/22/2022] Open
Abstract
Stratum corneum (SC) represents the outermost layer of the skin, being an effective barrier against the entry of molecules and pathogens. Skin research has given particular focus to SC as it hampers effective drug delivery for cosmetical and therapeutical purposes. Following recommendations to develop alternative models to animals, the SC isolated from skin obtained from medical procedures or from pigs has gained extensive attention. Yet, there is still missing a standard and simple procedure accepted within the scientific community to avoid application of different isolated SC methodologies, a fact that may hamper progress in skin research. Considering this challenge, the present study evaluated different experimental conditions aiming to establish a useful and sustainable solvent-free procedure for the obtention of a realistic SC model. The studied trypsin digestion parameters included concentration, incubation period and temperature. Isolated SC was characterized using histological analysis and calcein’s permeability, after the procedure and during a 6-week storage period. Data recommend trypsin digestion at 4 °C for 20 h as the most effective procedure to isolate SC from pig ear skin. This work contributes to standardize the SC isolation procedure, and to obtain a valuable and reliable SC mimetic model for skin drug development.
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The role of O-glycosylation in human disease. Mol Aspects Med 2021; 79:100964. [PMID: 33775405 DOI: 10.1016/j.mam.2021.100964] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/10/2021] [Indexed: 02/06/2023]
Abstract
O-glycosylation is a highly frequent post-translation modification of proteins, with important functional implications in both physiological and disease contexts. The biosynthesis of O-glycans depends on several layers of regulation of the cellular glycosylation machinery, being organ-, tissue- and cell-specific. This review provides insights on the molecular mechanism underlying O-glycan biosynthesis and modification, and highlights illustrative examples of diseases that are triggered or modulated by aberrant cellular O-glycosylation. Particular relevance is given to genetic disorders of glycosylation, infectious diseases and cancer. Finally, we address the potential of O-glycans and their biosynthetic pathways as targets for novel therapeutic strategies.
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