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Zaheer MS, Rizwan M, Aijaz N, Hameed A, Ikram K, Ali HH, Niaz Y, Usman Aslam HM, Manoharadas S, Riaz MW, Ahmed N, Bibi R, Manzoor MA, Rehman S. Investigating the synergistic effects of biochar, trans-zeatin riboside, and Azospirillum brasilense on soil improvement and enzymatic activity in water-stressed wheat. BMC Plant Biol 2024; 24:314. [PMID: 38654167 PMCID: PMC11036750 DOI: 10.1186/s12870-024-05038-z] [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] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/17/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND Water stress is a major danger to crop yield, hence new approaches to strengthen plant resilience must be developed. To lessen the negative effects of water stress on wheat plants, present study was arranged to investigate the role of synergistic effects of biochar, trans-zeatin riboside (t-ZR), and Azospirillum brasilense on soil improvement and enzymatic activity in water-stressed wheat. RESULTS In a three-replication experiment comprising of four treatments (T0: Control, T1: Drought stress (DS), T2: DS + t-ZR with biochar, T3: DS + A. brasilense with biochar), we observed notable improvements in soil quality and enzymatic activities in water-stressed wheat plants with the application of t-ZR and A. brasilense with biochar. In drought stress, Treatment having the application of A. brasilense with biochar performs best as compared to the other and significant increased the enzymatic activities such as peroxidase (7.36%), catalase (8.53%), superoxide dismutase (6.01%), polyphenol oxidase (14.14%), and amylase (16.36%) in wheat plants. Different enzymatic activities showed different trends of results. Soil organic C, dissolved organic C, dissolved organic N also enhanced 29.46%, 8.59%, 22.70% respectively with the application of A. brasilense with biochar under drought stress condition. CONCLUSIONS The synergistic action of A. brasilense and biochar creates an effective microbiological environment that supports essential plant physiological processes during drought stress. This enhancement is attributed to improved soil fertility and increased organic matter content, highlighting the potential of these novel strategies in mitigating water stress effects and enhancing crop resilience.
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Affiliation(s)
- Muhammad Saqlain Zaheer
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan.
| | - Muhammad Rizwan
- Department of Plant Nutrition, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, 53115, Bonn, Germany.
| | - Nazish Aijaz
- School of Biomedical Science, Hunan University, Changsha, Hunan, China
- MOA Key Laboratory of Soil Microbiology, Rhizobium Research Center, China Agricultural University, Beijing, China
| | - Akhtar Hameed
- Institute of Plant Protection, MNS University of Agriculture, Multan, 61000, Pakistan
| | - Kamran Ikram
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Hafiz Haider Ali
- Department of Agriculture, Government College University, Lahore, 54000, Pakistan
- Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USA
| | - Yasir Niaz
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Hafiz M Usman Aslam
- Institute of Plant Protection, MNS University of Agriculture, Multan, 61000, Pakistan
- Department of Plant Pathology, San Luis Valley Research Center, Colorado State University, Colorado, USA
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Muhammad Waheed Riaz
- State Key Laboratory of Wheat Breeding, Group of Wheat Quality and Molecular Breeding, College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, 271000, China
| | - Nadeem Ahmed
- Institute of Plant Protection, MNS University of Agriculture, Multan, 61000, Pakistan
| | - Rani Bibi
- Institute of Plant Protection, MNS University of Agriculture, Multan, 61000, Pakistan
| | - Muhammad Aamir Manzoor
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Shamsur Rehman
- National Key Laboratory of Wheat Improvement, Peking University Institute of Advanced Agricultural Sciences, Weifang, 261325, China
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Khalifa I, Li Z, Zou X, Nawaz A, Walayat N, Manoharadas S, Sobhy R. RuBisCo can conjugate and stabilize peonidin-3-O-p-coumaroylrutinoside-5-O-glucoside in isotonic sport models: Mechanisms from kinetics, multispectral, and libDock assays. Food Chem 2024; 438:138006. [PMID: 37989023 DOI: 10.1016/j.foodchem.2023.138006] [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: 06/26/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/23/2023]
Abstract
The co-pigmentation behaviour of RuBisCo proteins (with different concentrations) on peonidin-3-O-p-coumaroylrutinoside-5-O-glucoside (P3C5G, extracted from Rosetta potato's peels) conjugates in isotonic sport drinks (ISD) was examined using multispectral, thermal stability kinetics, and libDock-based molecular docking approaches. The colorant effects of RuBisCo on P3C5G were also studied in spray-dried microencapsulated ISD-models. RuBisCo, especially at a concentration of 10 mg/mL in ISD, showed a co-pigmentation effect on the color of P3C5G, mostly owing to its superior hyperchromicity, pKH-levels, and thermal stability. Results from multispectral approaches also revealed that RuBisCo could noncovalently interact with P3C5G as confirmed by libDock findings, where P3C5G strongly bound with RuBisCo via H-bonding and π-π forces, thereby altering its secondary structure. RuBisCo also preserved color of P3C5G in ISD-powdered models. These detailed results imply that RuBisCo could be utilized in ISD-liquid and powder models that might industrially be applied as potential food colorants in products under different conditions.
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Affiliation(s)
- Ibrahim Khalifa
- Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University Zhenjiang, Jiangsu 212013, China; Food Technology Department, Faculty of Agriculture, Benha University, 13736 Moshtohor, Egypt
| | - Zhihua Li
- Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University Zhenjiang, Jiangsu 212013, China
| | - Xiaobo Zou
- Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University Zhenjiang, Jiangsu 212013, China.
| | - Asad Nawaz
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, 425199 Yongzhou, Hunan, China
| | - Noman Walayat
- Centro Tecnológico de la Carne de Galicia, Parque Tecnológico de Galicia, Ourense, Spain
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, 11451 Riyadh, Saudi Arabia
| | - Remah Sobhy
- Agricultural Product Processing and Storage Lab, School of Food and Biological Engineering, Jiangsu University Zhenjiang, Jiangsu 212013, China; Department of Biochemistry, Faculty of Agriculture, Benha University, 13736 Moshtohor, Egypt
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3
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Jemli S, Vieira Y, Dotto GL, Rossatto DL, Amara FB, Chamtouri F, Bejar S, Ramos CG, Silva LFO, Khan MR, Manoharadas S, Dos Reis GS. Neodymium adsorption from aqueous solution by β-cyclodextrin nanosponges and a polymer valorized from potato peels waste: experiments and conventional and statistical physics interpretations. Environ Sci Pollut Res Int 2024; 31:19974-19985. [PMID: 38368300 DOI: 10.1007/s11356-024-32473-0] [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] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/09/2024] [Indexed: 02/19/2024]
Abstract
Using organic waste and residue streams to be turned into valuable and greener materials for various applications has proven an efficient and suitable strategy. In this work, two green materials (nanosponges and a polymer) were synthesized using potato peels and applied for the first time to adsorb and recover Neodymium (Nd3+) from aqueous solutions. The recovery of Nd3+ that belongs to the rare earth elements has attracted important interest due to its/their importance in several industrial and technological applications. The fine potato peel waste (FPPW) polymer presented an irregular shape and porous surface. At the same time, the β-cyclodextrin (β-CD) nanosponges had uniform distribution with regular and smooth shapes. β-CD nanosponges exhibited a much higher total carboxyl content (4.02 mmol g-1) than FPPW (2.50 mmol g-1), which could impact the Nd3+ adsorption performance because carboxyl groups can interact with cations. The adsorption capacity increased with the increase of the pH, reaching its maximum at pHs 6-7 for β-CD nanosponges and 4-7 for FPPW polymer. The kinetic and equilibrium data were well-fitted by General order and Liu models. β-CD nanosponges attained adsorption capacity near 100 mg Nd per gram of adsorbent. Thermodynamic and statistical physical results corroborated that the adsorption mechanism was due to electrostatic interaction/complexation and that the carboxyl groups were important in the interactions. β-CD nanosponges (three cycles of use) were more effective than FPPW (one cycle of use) in the regeneration. Finally, β-CD nanosponges could be considered an eco-friendly adsorbent to recover Nd3+ from aqueous matrices.
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Affiliation(s)
- Sonia Jemli
- Laboratory of Microbial Biotechnology and Enzymes Engineering, Centre of Biotechnology of Sfax, University of Sfax, PO Box 1177, 3018, Sfax, Tunisia
- Department of Biology, Faculty of Sciences of Sfax, University of Sfax, Road of Soukra Km 3.5, 3000, Sfax, Tunisia
| | - Yasmin Vieira
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Guilherme Luiz Dotto
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil.
| | - Diovani Leindecker Rossatto
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Fakhreddine Ben Amara
- Laboratory of Microbial Biotechnology and Enzymes Engineering, Centre of Biotechnology of Sfax, University of Sfax, PO Box 1177, 3018, Sfax, Tunisia
| | - Farah Chamtouri
- Laboratory of Microbial Biotechnology and Enzymes Engineering, Centre of Biotechnology of Sfax, University of Sfax, PO Box 1177, 3018, Sfax, Tunisia
| | - Samir Bejar
- Laboratory of Microbial Biotechnology and Enzymes Engineering, Centre of Biotechnology of Sfax, University of Sfax, PO Box 1177, 3018, Sfax, Tunisia
| | - Claudete Gindri Ramos
- Universidad De La Costa, Calle 58 # 55-66, 080002, Barranquilla, Atlantico, Colombia
| | | | - Mohammad Rizwan Khan
- Department of Chemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Glaydson Simões Dos Reis
- Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, 901 83, Umea, Sweden
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Rai VK, Kumar A, Pradhan D, Halder J, Rajwar TK, Sarangi MK, Dash P, Das C, Manoharadas S, Kar B, Ghosh G, Rath G. Spray-Dried Mucoadhesive Re-dispersible Gargle of Chlorhexidine for Improved Response Against Throat Infection: Formulation Development, In Vitro and In Vivo Evaluation. AAPS PharmSciTech 2024; 25:31. [PMID: 38326518 DOI: 10.1208/s12249-024-02750-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/20/2024] [Indexed: 02/09/2024] Open
Abstract
Drug delivery to the buccal mucosa is one of the most convenient ways to treat common mouth problems. Here, we propose a spray-dried re-dispersible mucoadhesive controlled release gargle formulation to improve the efficacy of chlorhexidine. The present investigation portrays an approach to get stable and free-flowing spray-dried porous aggregates of chlorhexidine-loaded sodium alginate nanoparticles. The ionic gelation technique aided with the chlorhexidine's positive surface charge-based crosslinking, followed by spray drying of the nanoparticle's dispersion in the presence of lactose- and leucine-yielded nano-aggregates with good flow properties and with a size range of about 120-350 nm. Provided with the high entrapment efficiency (87%), the particles showed sustained drug release behaviors over a duration of 10 h, where 87% of the released drug got permeated within 12 h. The antimicrobial activity of the prepared formulation was tested on S. aureus, provided with a higher zone of growth inhibition than the marketed formulation. Aided with an appropriate mucoadhesive strength, this product exhibited extended retention of nanoparticles in the throat region, as shown by in vivo imaging results. In conclusion, the technology, provided with high drug retention and extended effect, could be a potential candidate for treating several types of throat infections.
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Affiliation(s)
- Vineet Kumar Rai
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India
| | - Amresh Kumar
- Department of Pharmaceutics, I.S.F. College of Pharmacy, Moga, Punjab, India
| | - Deepak Pradhan
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India
| | - Jitu Halder
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India
| | - Tushar Kanti Rajwar
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India
| | - Manoj Kumar Sarangi
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University, Lucknow, Uttar Pradesh, India
| | - Priyanka Dash
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India
| | - Chandan Das
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box. 2454, 11451, Riyadh, Saudi Arabia
| | - Biswakanth Kar
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India
| | - Goutam Ghosh
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India
| | - Goutam Rath
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to Be University), Bhubaneswar, Odisha, 751003, India.
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5
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Gonçalves JO, Crispim MM, Rios EC, Silva LF, de Farias BS, Sant'Anna Cadaval Junior TR, de Almeida Pinto LA, Nawaz A, Manoharadas S, Dotto GL. New and effective cassava bagasse-modified biochar to adsorb Food Red 17 and Acid Blue 9 dyes in a binary mixture. Environ Sci Pollut Res Int 2024; 31:5209-5220. [PMID: 38110688 DOI: 10.1007/s11356-023-31489-2] [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] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/07/2023] [Indexed: 12/20/2023]
Abstract
A promissory technic for reducing environmental contaminants is the production of biochar from waste reuse and its application for water treatment. This study developed biochar (CWb) and NH4Cl-modified biochar (MCWb) using cassava residues as precursors. CWb and MCWb were characterized and evaluated in removing dyes (Acid Blue 9 and Food Red 17) in a binary system. The adsorbent demonstrated high adsorption capacity at all pH levels studied, showing its versatility regarding this process parameter. The equilibrium of all adsorption experiments was reached in 30 min. The adsorption process conformed to pseudo-first-order kinetics and extended Langmuir isotherm model. The thermodynamic adsorption experiments demonstrated that the adsorption process is physisorption, exhibiting exothermic and spontaneous characteristics. MCWb exhibited highly efficient and selective adsorption behavior towards the anionic dyes, indicating maximum adsorption capacity of 131 and 150 mg g-1 for Food Red 17 and Acid Blue 9, respectively. Besides, MCWb could be reused nine times, maintaining its original adsorption capacity. This study demonstrated an excellent adsorption capability of biochars in removing dyes. In addition, it indicated the recycling of wastes as a precursor of bio composts, a strategy for utilization in water treatment with binary systems. It showed the feasibility of the reuse capacity that indicated that the adsorbent may have many potential applications.
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Affiliation(s)
- Janaína Oliveira Gonçalves
- Department of Civil and Environmental, Universidad de la Costa, Calle 58 #55-66, 080002, Barranquilla, Atlántico, Colombia
| | - Marssele Martins Crispim
- Industrial Technology Laboratory, School of Chemistry and Food Federal University of Rio Grande, Rio Grande, Brazil
| | - Estefani Cardillo Rios
- Industrial Technology Laboratory, School of Chemistry and Food Federal University of Rio Grande, Rio Grande, Brazil
| | - Luis Felipe Silva
- Department of Civil and Environmental, Universidad de la Costa, Calle 58 #55-66, 080002, Barranquilla, Atlántico, Colombia
| | - Bruna Silva de Farias
- Industrial Technology Laboratory, School of Chemistry and Food Federal University of Rio Grande, Rio Grande, Brazil
| | | | | | - Asad Nawaz
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Guilherme Luiz Dotto
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil.
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Iqbal MA, Bakhsh S, Ikram M, Sohail M, Islam MR, Manoharadas S, Choi JR. Investigations on the structural and optoelectronic characteristics of cadmium-substituted zinc selenide semiconductors. Front Chem 2023; 11:1299013. [PMID: 38162394 PMCID: PMC10754984 DOI: 10.3389/fchem.2023.1299013] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/28/2023] [Indexed: 01/03/2024] Open
Abstract
A change in the composition and dopant content of selective atoms in a material leads to their new desired properties by altering the structure, which can significantly improve the performance of relevant devices. By acknowledging this, we focused on characterizing the optoelectronic and structural properties of cadmium-substituted zinc selenide (Zn1-xCdxSe; 0 ≤ X ≤ 1) semiconductors using density functional theory (DFT) within the generalized gradient approximation (GGA), EV-GGA, and mBJ approximations. The results proved the cubic symmetry of the investigated materials at all Cd concentrations (0, 0.25, 0.50, 0.75, and 1). Although a linear surge in the lattice constant is observed with the change in Cd content, the bulk modulus exhibits a reverse trend. These materials are observed to be direct bandgap semiconductors at all Cd concentrations, with a decrease in electronic bandgap from 2.76 eV to 1.87 eV, and have isotropic optical properties, showing their potential applicability as a blue-to-red display. The fundamental optical properties of the materials, such as optical conductivity, reflectance, refractive index, absorption, and extinction coefficient, are also discussed. These outcomes provide a computational understanding of the diverse applications of Zn1-xCdxSe semiconductors in optoelectronic, photonic, and photovoltaic devices, particularly for a visible-range display.
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Affiliation(s)
- Muhammad Aamir Iqbal
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
| | - Sunila Bakhsh
- Department of Physics, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta, Pakistan
| | - Mujtaba Ikram
- Institute of Chemical Engineering and Technology (ICET), University of Punjab, Lahore, Pakistan
| | - Muhammad Sohail
- Department of Physics, University of Balochistan, Quetta, Pakistan
| | - Md. Rasidul Islam
- Department of Electrical and Electronic Engineering, Bangamata Sheikh Fojilatunnesa Mujib Science and Technology University, Jamalpur, Bangladesh
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Jeong Ryeol Choi
- School of Electronic Engineering, Kyonggi University, Suwon, Gyeonggi–do, Republic of Korea
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da Silva RNF, de Azevedo Mello P, Penteado Holkem A, Silva LFO, Oliveira MLS, Nawaz A, Manoharadas S, Dotto GL. Recovery of Ce and La from phosphogypsum leachate by adsorption using grape wastes. Environ Sci Pollut Res Int 2023; 30:118366-118376. [PMID: 37910355 DOI: 10.1007/s11356-023-30632-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/19/2023] [Indexed: 11/03/2023]
Abstract
The present research aimed to evaluate the use of grape stalk in the adsorption of lanthanum and cerium to identify the best operating conditions enabling the application of the bioadsorbent in REEs leached from phosphogypsum. The grape stalk was characterized and showed an amorphous structure with a heterogeneous and very porous surface. Also, it was possible to identify the groups corresponding to carboxylic acids, phenols, alcohols, aliphatic acids, and aromatic rings. The pH effect study showed that the adsorption process of La3+ and Ce3+ ions was favored at pH 5.0. The adsorption kinetics followed the pseudo-second-order model. In just 20 min, 80% saturation was reached, while equilibrium was reached after 120 min. The adsorption isotherms were appropriately adjusted to the Langmuir model, and the maximum adsorption capacities were obtained at 298 K, which were 35.22 mg g-1 for La3+ and 37.99 mg g-1 for Ce3+. Furthermore, the adsorption process was favorable, spontaneous, and exothermic. In the study's second phase, phosphogypsum was leached with a sulfuric acid solution. Then, the adsorption of REEs was carried out under the experimental conditions of pH after leaching and pH 5.0 (adjustment carried out with sodium hydroxide solution) at 298 K for 120 min and with adsorbent dosages of 1 and 5 g L-1. This process resulted in removal percentages above 95% for the most abundant REEs, such as neodymium, lanthanum, and cerium, at pH 5.0 and a dosage of 5 g L-1, demonstrating the effectiveness of the bioadsorbent used. These results indicate the potential of using grape residue as a promising bioadsorbent in recovering rare earth elements from phosphogypsum leachate.
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Affiliation(s)
- Rafaela Nogueira Fontoura da Silva
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Paola de Azevedo Mello
- Department of Chemistry, Federal University of Santa Maria-UFSM, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Alice Penteado Holkem
- Department of Chemistry, Federal University of Santa Maria-UFSM, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | | | | | - Asad Nawaz
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Guilherme Luiz Dotto
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil.
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8
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Bilal M, Yaqub A, Hassan HU, Akhtar S, Rafiq N, Ali Shah MI, Hussain I, Salman Khan M, Nawaz A, Manoharadas S, Rizwan Khan M, Arai T, Ríos-Escalante PDL. Microplastic Quantification in Aquatic Birds: Biomonitoring the Environmental Health of the Panjkora River Freshwater Ecosystem in Pakistan. Toxics 2023; 11:972. [PMID: 38133373 PMCID: PMC10748139 DOI: 10.3390/toxics11120972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 12/23/2023]
Abstract
Microplastic pollution has become a global concern, with potential negative impacts on various ecosystems and wildlife species. Among these species, ducks (Anas platyrhynchos) are particularly vulnerable due to their feeding habits and proximity to aquatic environments contaminated with microplastics. The current study was designed to monitor microplastic (MP) pollutants in the freshwater ecosystem of the Panjkora River, Lower Dir, Pakistan. A total of twenty (20) duck samples were brought up for four months and 13 days on the banks of the river, with no food intake outside the river. When they reached an average weight of 2.41 ± 0.53 kg, all samples were sacrificed, dissected, and transported in an ice box to the laboratory for further analysis. After sample preparation, such as digestion with 10% potassium hydroxide (KOH), density separation, filtration, and identification, the MP content was counted. A total of 2033 MP particles were recovered from 20 ducks with a mean value of 44.6 ± 15.8 MPs/crop and 57.05 ± 18.7 MPs/gizzard. MPs detected in surface water were 31.2 ± 15.5 MPs/L. The major shape types of MPs recovered were fragments in crop (67%) and gizzard (58%) samples and fibers in surface water (56%). Other types of particles recovered were fibers, sheets, and foams. The majority of these detected MP particles were in the size range of 300-500 µm (63%) in crops, and 50-150 µm (55%) in gizzards, while in water samples the most detected particles were in the range of 150-300 µm (61%). Chemical characterization by FTIR found six types of polymers. Low-density polyethylene (LDPE) had the greatest polymer detection rate (39.2%), followed by polyvinyl chloride (PVC) (28.3%), high-density polyethylene (HDPE) (22.7%), polystyrene (6.6%), co-polymerized polypropylene (2.5%), and polypropylene homopolymer (0.7%). This study investigated the presence of microplastics in the crops and gizzards of ducks, as well as in river surface water. The results revealed the significant and pervasive occurrence of microplastics in both the avian digestive systems and the surrounding water environment. These findings highlight the potential threat of microplastic pollution to wildlife and ecosystems, emphasizing the need for further research and effective mitigation strategies to address this pressing environmental concern.
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Affiliation(s)
- Muhammad Bilal
- Department of Zoology, Government College University Lahore, Lahore 54000, Pakistan; (M.B.); (A.Y.)
| | - Atif Yaqub
- Department of Zoology, Government College University Lahore, Lahore 54000, Pakistan; (M.B.); (A.Y.)
| | - Habib Ul Hassan
- Department of Zoology, University of Karachi, Karachi 75270, Pakistan
- Fisheries Development Board, Ministry of National Food Security and Research, Islamabad 44000, Pakistan
| | - Sohail Akhtar
- Department of Mathematics and Statistics, University of Haripur, Haripur 22620, Pakistan;
| | - Naseem Rafiq
- Department of Zoology, Abdul Wali Khan University, Mardan 23200, Pakistan; (N.R.); (M.S.K.)
| | | | - Ibrar Hussain
- Department of Statistics, Government College University Lahore, Lahore 54000, Pakistan
| | - Muhammad Salman Khan
- Department of Zoology, Abdul Wali Khan University, Mardan 23200, Pakistan; (N.R.); (M.S.K.)
| | - Asad Nawaz
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China;
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Mohammad Rizwan Khan
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Gadong BE 1410, Brunei;
| | - Patricio De Los Ríos-Escalante
- Facultad de Recursos Naturales, Departamento de Ciencias Biológicas y Químicas, Universidad Católica de Temuco, Temuco 4780000, Chile;
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9
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Dos Santos JMN, Nora FBD, da Boit Martinello K, Vieira MGA, Nawaz A, Silva LFO, Manoharadas S, Dotto GL. Carbonaceous adsorbent as green silica by-product applied to the treatment of contaminated effluent by pesticide commonly sprayed on rice cultivation. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-30501-z. [PMID: 37884710 DOI: 10.1007/s11356-023-30501-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023]
Abstract
Grain cultivation and its impacts on the environment have been the focus of many studies, especially due to generated solid waste and the wide use of agrochemicals aiming for greater productivity. In this context, the present study proposes a new and consistent step in constructing self-sustainability in rice farming. The proposed stage includes reusing green silica waste as an adsorbent to treat effluents contaminated by pesticides directly applied to rice cultivation. After nano silica production through the rice husks burning, followed by basic leaching and acid precipitation, a carbonaceous material remains. This material, naturally impregnated by Na2SiO3, was washed and dried, characterized, and used to remove the pesticide 2,4-dichlorophenoxyacetic acid (2,4-D). The adsorption essays were performed at 2,4-D at low concentrations (between 1 and 10 mg L-1) at different temperatures. The washed and dried porous carbon (WDPC) surface is irregular and presents slit-shaped channels. The FT-IR analysis identified the siloxane, carbonyl, carboxylate, and methylene functional groups available to interact with the pesticide molecules. The washing/drying process eliminated impurities, improving the surface area from 539.67 to 619.67 cm2 g-1 and pore volume from 0.29 to 0.44 cm3 g-1. Concerning the adsorption of 2,4-D on WDPC, the best pH was 6.0, where around 75% of the pesticide was removed from the water. The equilibrium isotherms presented an S-shaped form indicating a multilayer and cooperative adsorption, with maximum adsorption capacities of 7.504 and 7.736 mg g-1. The estimated ∆Gads, ΔHads, and ΔSads values suggested that pesticide adsorption was spontaneous, exothermic, and favorable. Finally, WDPC demonstrated a good potential to uptake 2,4-D from water, contributing to self-sustainability in rice farming.
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Affiliation(s)
- Juliana Machado Nascimento Dos Santos
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Fabíola Balzan Dalla Nora
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | | | | | - Asad Nawaz
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, China
| | | | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Guilherme Luiz Dotto
- Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil.
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10
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Akram N, Afzaal M, Saeed F, Ahmad A, Imran A, Ahmed A, Shah YA, Islam F, Alomar SY, Manoharadas S, Nawaz A. Fabrication and Characterization of PVA-WPI Based Nanofiber Mats for Improved Viability of Lactobacillus rhamnosus GG. Foods 2023; 12:3904. [PMID: 37959023 PMCID: PMC10648975 DOI: 10.3390/foods12213904] [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: 08/26/2023] [Revised: 10/09/2023] [Accepted: 10/19/2023] [Indexed: 11/15/2023] Open
Abstract
In the current study, whey protein-based nanofibers were fabricated to encapsulate Lactobacillus rhamnosus. Purposely, different ratios of PVA (polyvinyl alcohol) and WPI (whey protein isolate) were blended to fabricate nanofibers. Nanofiber mats were characterized in terms of particle size, diameter, tensile strength, elongation at break, and loading efficiency. Morphological and molecular characterizations were carried out using scanning electron microscopy (SEM) and Fourier transform infrared (FTIR). Moreover, in vitro viability under simulated gastrointestinal (GI) conditions and thermal stability were also assessed. The results reveal that by increasing the PVA concentration, the conductivity increased while the viscosity decreased. SEM micrographs showed that probiotics were successfully loaded within the nanofiber. The FTIR spectra show strong bonding between the encapsulating materials with the addition of probiotics. In vitro and thermal analyses revealed that the survival of encapsulated probiotics significantly (p < 0.05) improved. In a nutshell, PVA-WPI composite nanofibers have promising potential when used to enhance the viability and stability of probiotics under adverse conditions.
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Affiliation(s)
- Noor Akram
- Food Safety and Biotechnology Lab, Department of Food Science, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Muhammad Afzaal
- Food Safety and Biotechnology Lab, Department of Food Science, Government College University Faisalabad, Faisalabad 38000, Pakistan;
- Department of Food Science, Government College University Faisalabad, Faisalabad 38000, Pakistan; (F.S.); (A.I.); (F.I.)
| | - Farhan Saeed
- Department of Food Science, Government College University Faisalabad, Faisalabad 38000, Pakistan; (F.S.); (A.I.); (F.I.)
| | - Adnan Ahmad
- Research School of Chemistry, Australian National University, Canberra 2601, Australia;
| | - Ali Imran
- Department of Food Science, Government College University Faisalabad, Faisalabad 38000, Pakistan; (F.S.); (A.I.); (F.I.)
| | - Aftab Ahmed
- Department of Nutritional Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Yasir Abbas Shah
- Natural and Medical Science Research Center, University of Nizwa, Nizwa 616, Oman;
| | - Fakhar Islam
- Department of Food Science, Government College University Faisalabad, Faisalabad 38000, Pakistan; (F.S.); (A.I.); (F.I.)
| | - Suliman Yousef Alomar
- Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Asad Nawaz
- Hunan Engineering Technology Research Center for Comprehensive Development and Utilization of Biomass Resources, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China
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11
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Manoharadas S, Al-Rayes BF, Almuzaini MAM, Almohammadi YM. Resensitisation of Methicillin-Resistant Staphylococcus aureus to Conventional Antibiotics in the Presence of an Engineered Enzybiotic. Pharmaceutics 2023; 15:2511. [PMID: 37896271 PMCID: PMC10610342 DOI: 10.3390/pharmaceutics15102511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most dreadful pathogens relevant in community and nosocomial-related infections around the world. Resensitising MRSA to antibiotics, once it became resistant, was a tough choice due to the high adaptability of this bacteria to savage conditions. This study aimed to create a chimeric enzybiotic against MRSA and test its efficiency, either individually or in combination with antibiotics. The novel enzybiotic BAC100 was constructed by fusing the catalytic domain from the bacteriocin BacL1 from Enterococcus faecalis with the cell-wall-binding domain from protein P17 of Staphylococcus aureus bacteriophage ϕ44AHJD. Apart from its partial lone activity, BAC100 was found to resensitise the MRSA strain to traditional antibiotics, including ampicillin and tetracycline. Both drugs were able to reduce live MRSA cells by 85 and 90%, respectively, within 60 min of treatment together with BAC100. However, no significant activity was observed against MRSA when these drugs were tested independently, pointing to the inherent resistance of MRSA against these conventional antibiotics. To our knowledge, this is one of the first instances where an engineered enzybiotic was found to resensitise MRSA to conventional antibiotics. This study will pave the way for the development of similar peptides that can be used together with antibiotics against gruesome pathogens of clinical importance.
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Affiliation(s)
- Salim Manoharadas
- Central Laboratory, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (B.F.A.-R.); (M.A.M.A.); (Y.M.A.)
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12
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de Farias BS, Rizzi FZ, Ribeiro ES, Diaz PS, Sant'Anna Cadaval Junior TR, Dotto GL, Khan MR, Manoharadas S, de Almeida Pinto LA, Dos Reis GS. Influence of gelatin type on physicochemical properties of electrospun nanofibers. Sci Rep 2023; 13:15195. [PMID: 37710008 PMCID: PMC10502060 DOI: 10.1038/s41598-023-42472-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023] Open
Abstract
This study explores the fabrication of nanofibers using different types of gelatins, including bovine, porcine, and fish gelatins. The gelatins exhibited distinct molecular weights and apparent viscosity values, leading to different entanglement behavior and nanofiber production. The electrospinning technique produced nanofibers with diameters from 47 to 274 nm. The electrospinning process induced conformational changes, reducing the overall crystallinity of the gelatin samples. However, porcine gelatin nanofibers exhibited enhanced molecular ordering. These findings highlight the potential of different gelatin types to produce nanofibers with distinct physicochemical properties. Overall, this study sheds light on the relationship between gelatin properties, electrospinning process conditions, and the resulting nanofiber characteristics, providing insights for tailored applications in various fields.
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Affiliation(s)
- Bruna Silva de Farias
- School of Chemistry and Food, Federal University of Rio Grande (FURG), km 8 Itália Avenue, Rio Grande, RS, 96203-900, Brazil
| | - Francisca Zuchoski Rizzi
- School of Chemistry and Food, Federal University of Rio Grande (FURG), km 8 Itália Avenue, Rio Grande, RS, 96203-900, Brazil
| | - Eduardo Silveira Ribeiro
- Biotechnology Unit, Technology Development Center, Federal University of Pelotas (UFPEL), Eliseu Maciel, Capão do Leão, 96010-610, Brazil
| | - Patrícia Silva Diaz
- Biotechnology Unit, Technology Development Center, Federal University of Pelotas (UFPEL), Eliseu Maciel, Capão do Leão, 96010-610, Brazil
| | | | - Guilherme Luiz Dotto
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil
| | - Mohammad Rizwan Khan
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Luiz Antonio de Almeida Pinto
- School of Chemistry and Food, Federal University of Rio Grande (FURG), km 8 Itália Avenue, Rio Grande, RS, 96203-900, Brazil
| | - Glaydson Simões Dos Reis
- Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden.
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13
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Suganthi S, Vignesh S, Raj V, Manoharadas S, Pandiaraj S, Kim H. Synergistic influence of vanadium pentoxide-coupled graphitic carbon nitride composite for photocatalytic degradation of organic pollutant: Stability and involved Z-scheme mechanism. Environ Res 2023; 231:116288. [PMID: 37263474 DOI: 10.1016/j.envres.2023.116288] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/21/2023] [Accepted: 05/30/2023] [Indexed: 06/03/2023]
Abstract
The removal of dyes from wastewater by photocatalytic technologies has received substantial attention in recent years. In the present study, novel Z-scheme V2O5/g-C3N4 photocatalytic composites were organized via simple hydrothermal processes and a sequence of several characterization aspects. The degradation results showed that the optimum Z-scheme GVO2 heterostructure composite photocatalysts (PCs) had a better efficiency (90.1%) and an apparent rate (0.0136 min-1) for the methylene blue (MB) aqueous organic dye degradation, which was about 6.18-fold higher than that of pristine GCN catalyst. Meanwhile, the GVO2 heterostructured PCs showed better recycling stability after five consecutive tests. Moreover, the free radical trapping tests established that •O2- and h+ species were the prime reactive species in the photocatalytic MB degradation process in the heterostructured PCs. The photocatalytic enhanced activity was primarily recognized as the synergistic interfacial construction of the Z-scheme heterojunctions among V2O5 and GCN, which improved the separation/transfer, lower recombination rate, extended visible-light utilization ability, and enhanced reaction rate. Therefore, the existing study affords a simple tactic for the development of a direct Z-scheme for photocatalytic heterojunction nanomaterials for potential environmental remediation applications.
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Affiliation(s)
- Sanjeevamuthu Suganthi
- Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem, 636 011, Tamil Nadu, India.
| | - Shanmugam Vignesh
- School of Materials Science and Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Vairamuthu Raj
- Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. BOX 2454, Riyadh, Saudi Arabia
| | - Saravanan Pandiaraj
- Department of Self-Development Skills, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Haekyoung Kim
- School of Materials Science and Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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Khan A, Ul-Haq Z, Fazid S, Fatima S, Muhammad N, Ahmed J, Manoharadas S, Safi SZ, Habib I, Garzon C, Ihtesham Y, Zahid F, Dad F, Mahamadou T, Lowe NM. Effectiveness of locally produced ready to use supplementary food on hemoglobin, anthropometrics, and plasma micronutrients concentrations of 6 to 23 months age children: a non-randomized community-based trial from Pakistan. Front Nutr 2023; 10:1176778. [PMID: 37575332 PMCID: PMC10415027 DOI: 10.3389/fnut.2023.1176778] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 07/14/2023] [Indexed: 08/15/2023] Open
Abstract
Background Micronutrient deficiencies including vitamin A, vitamin D, and zinc are highly prevalent in children below 5 years of age in low and -middle-income countries. We aimed to evaluate the effectiveness of ready-to-use Lipid-based Nutrient Supplement-Medium Quantity (LNS-MQ) local name "Wawa-mum" on plasma micronutrient status, hemoglobin concentration and anthropometric measurements. Methods A community-based non-randomized trial was conducted in the Kurram district of Khyber Pakhtunkhwa from January 2018 to June 2019. A total of 110 children aged 6 to 23 months old were recruited and allocated to the intervention and control arm of the study. A total of 57 children in the intervention arm received a daily ration of 50 g of Wawa-mum, for one year. To assess the impact of the intervention on primary outcome measures, i.e., serum vitamin A, D concentration, plasma zinc, and hemoglobin concentration. Blood samples were collected at baseline and after one year following the intervention. The vitamins concentration in serum were assessed using Enzyme-Linked Immunosorbent Assay (ELISA) and plasma zinc by atomic absorption spectrometry. The hemoglobin concentration was measured by an automated hematology analyzer. A 24-h dietary recall interview was used to assess the nutrient intake adequacy. Multivariate Linear regression models were used to analyze the outcomes while controlling for potential confounders. Results In the intervention arm, children had on average 6.2 μg/dL (95% CI 3.0-9.3, value of p<0.001) increase in the serum vitamin A concentration, 8.1 ng/mL (95% CI 1.3-14.9, value of p 0.02) increase in serum vitamin D concentration and 49.0 μg/dL (95% CI 33.5-64.5, value of p<0.001) increase in the plasma zinc concentration, and 2.7 g/dL (95% CI 2.0-3.3, value of p<0.001) increase in hemoglobin concentration while adjusted for covariates. An addition, length-for-age z-score (LAZ), weight-for-length z-score (WLZ), weight-for-age z-score (WAZ), and prevalence of undernutrition including stunting, wasting, and underweight were calculated as a secondary outcome to investigate the impact of micronutrients on growth parameters, that has been improved significantly after receiving the Wawa-mum. Conclusion Wawa-mum (LNS-MQ) is an effective intervention to improve the micronutrient status, hemoglobin concentration, and growth parameters in 6 to 23 months children, which can be scaled up in the existing health system to address the alarming rates of under nutrition in Pakistan and other developing countries. Clinical trial registration https://doi.org/10.1186/ISRCTN94319790, ISRCTN94319790.
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Affiliation(s)
- Aslam Khan
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
- Institute of Public Health and Social Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Zia Ul-Haq
- Institute of Public Health and Social Sciences, Khyber Medical University, Peshawar, Pakistan
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, United Kingdom
| | - Sheraz Fazid
- Institute of Public Health and Social Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Sadia Fatima
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Nawshad Muhammad
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Jawad Ahmed
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sher Zaman Safi
- Faculty of Medicine, Bioscience and Nursing, MAHSA University, Jenjarom, Malaysia
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad Lahore Campus, Lahore, Pakistan
| | - Ijaz Habib
- World Food Programme, Peshawar, Pakistan
| | | | | | | | - Fazal Dad
- World Food Programme, Peshawar, Pakistan
| | | | - Nicola M. Lowe
- UCLan Research Centre for Global Development, University of Central Lancashire, Preston, United Kingdom
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15
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Manoharadas S, Ahmad N, Altaf M, Alrefaei AF, Al-Rayes BF. An Enzybiotic Cocktail Effectively Disrupts Preformed Dual Biofilm of Staphylococcus aureus and Enterococcus faecalis. Pharmaceuticals (Basel) 2023; 16:ph16040564. [PMID: 37111322 PMCID: PMC10145859 DOI: 10.3390/ph16040564] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/05/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Multidrug-resistant bacterial infections are on the rise around the world. Chronic infections caused by these pathogens through biofilm mediation often complicate the situation. In natural settings, biofilms are often formed with different species of bacteria existing synergistically or antagonistically. Biofilms on diabetic foot ulcers are formed predominantly by two opportunistic pathogens, Staphylococcus aureus and Enterococcus faecalis. Bacteriophages and phage-based proteins, including endolysins, have been found to be active against biofilms. In this study, we evaluated the activity of two engineered enzybiotics either by themselves or as a combination against a dual biofilm formed by S. aureus and E. faecalis in an inert glass surface. An additive effect in rapidly disrupting the preformed dual biofilm was observed with the cocktail of proteins, in comparison with mono treatment. The cocktail-treated biofilms were dispersed by more than 90% within 3 h of treatment. Apart from biofilm disruption, bacterial cells embedded in the biofilm matrix were also effectively reduced by more than 90% within 3 h of treatment. This is the first instance where a cocktail of engineered enzybiotics has been effectively used to impede the structural integrity of a dual biofilm.
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Affiliation(s)
- Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
| | - Naushad Ahmad
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
| | - Mohammad Altaf
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- Department of Zoology, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
| | - Basel F Al-Rayes
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
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16
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Parrey SH, Ud Din Parray M, Manoharadas S, Altaf M, Alrefaei AF, Badjah Hadj AYM, Patel R, Ahmad R, Khan AB. Biomimetic Synthesis of Au‐Nps using Cassia fistula Flower Extract and Studies of their Protein Interaction. ChemistrySelect 2022. [DOI: 10.1002/slct.202203042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Mehraj Ud Din Parray
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia New Delhi India
| | - Salim Manoharadas
- King Saud University Department of Botany and Microbiology College of Science Building 5, P.O. Box. 2454 Riyadh 11451 Saudi Arabia
- King Saud University Central Laboratory RM 55A College of Science Building 5, P.O. Box. 2454 Riyadh 11451 Saudi Arabia
| | - Mohammad Altaf
- King Saud University Central Laboratory RM 55A College of Science Building 5, P.O. Box. 2454 Riyadh 11451 Saudi Arabia
- King Saud University Department of chemistry College of Science Building 5, P.O. Box. 2454 Riyadh 11451 Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- King Saud University Department of Zoology College of Science, P.O. Box. 2454 Riyadh 11451 Saudi Arabia
| | - Ahmed Yacine M. Badjah Hadj
- King Saud University Department of chemistry College of Science Building 5, P.O. Box. 2454 Riyadh 11451 Saudi Arabia
| | - Rajan Patel
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia New Delhi India
| | - Rabia Ahmad
- Department of Chemistry Jamia Millia Islamia New Delhi India
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Aldawood N, Jalouli M, Alrezaki A, Nahdi S, Alamri A, Alanazi M, Manoharadas S, Alwasel S, Harrath AH. Fetal programming: in utero exposure to acrylamide leads to intergenerational disrupted ovarian function and accelerated ovarian aging. Aging (Albany NY) 2022; 14:6887-6904. [PMID: 36069806 PMCID: PMC9512500 DOI: 10.18632/aging.204269] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/26/2022] [Indexed: 12/03/2022]
Abstract
In this study we investigated the effects of multigenerational exposures to acrylamide (ACR) on ovarian function. Fifty-day-old Wistar albino female rats were divided into the control and ACR-treated groups (2.5, 10, and 20 mg/kg/day) from day 6 of pregnancy until delivery. The obtained females of the first (AF1) and second generation (AF2) were euthanized at 4 weeks of age, and plasma and ovary samples were collected. We found that in utero multigenerational exposure to ACR reduced fertility and ovarian function in AF1 through inducing histopathological changes as evidenced by the appearance of cysts and degenerating follicles, oocyte vacuolization, and pyknosis in granulosa cells. TMR red positive cells confirmed by TUNEL assay were mostly detected in the stroma of the treated groups. Estradiol and IGF-1 concentrations significantly decreased as a result of decreased CYP19 gene and its protein expression. However, ACR exposure in AF2 led to early ovarian aging as evidenced by high estradiol and progesterone levels among all treated groups compared to control group, corresponding to the upregulation of the CYP19 gene and protein expression. The apoptotic cells of the stroma were greatly detected compared to that in the control group, whereas no significant difference was reported in ESR1 and ESR2 gene expression. This study confirms the developmental adverse effects of ACR on ovarian function and fertility in at least two consecutive generations. It emphasizes the need for more effective strategies during pregnancy, such as eating healthy foods and avoiding consumption of ACR-rich products, including fried foods and coffee.
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Affiliation(s)
- Nouf Aldawood
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Maroua Jalouli
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abdulkarem Alrezaki
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Saber Nahdi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abdullah Alamri
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed Alanazi
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Saleh Alwasel
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abdel Halim Harrath
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
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Ahmad N, Wahab R, Manoharadas S, Alrayes BF, Alam M, Alharthi FA. The Role of Strontium in CeNiO 3 Nano-Crystalline Perovskites for Greenhouse Gas Mitigation to Produce Syngas. Molecules 2022; 27:molecules27020356. [PMID: 35056670 PMCID: PMC8779912 DOI: 10.3390/molecules27020356] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/27/2021] [Accepted: 01/04/2022] [Indexed: 02/06/2023] Open
Abstract
The transition metal-based catalysts for the elimination of greenhouse gases via methane reforming using carbon dioxide are directly or indirectly associated with their distinguishing characteristics such as well-dispersed metal nanoparticles, a higher number of reducible species, suitable metal–support interaction, and high specific surface area. This work presents the insight into catalytic performance as well as catalyst stability of CexSr1−xNiO3 (x = 0.6–1) nanocrystalline perovskites for the production of hydrogen via methane reforming using carbon dioxide. Strontium incorporation enhances specific surface area, the number of reducible species, and nickel dispersion. The catalytic performance results show that CeNiO3 demonstrated higher initial CH4 (54.3%) and CO2 (64.8%) conversions, which dropped down to 13.1 and 19.2% (CH4 conversions) and 26.3 and 32.5% (CO2 conversions) for Ce0.8Sr0.2NiO3 and Ce0.6Sr0.4NiO3, respectively. This drop in catalytic conversions post strontium addition is concomitant with strontium carbonate covering nickel active sites. Moreover, from the durability results, it is obvious that CeNiO3 exhibited deactivation, whereas no deactivation was observed for Ce0.8Sr0.2NiO3 and Ce0.6Sr0.4NiO3. Carbon deposition during the reaction is mainly responsible for catalyst deactivation, and this is further established by characterizing spent catalysts.
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Affiliation(s)
- Naushad Ahmad
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (M.A.); (F.A.A.)
- Correspondence: or
| | - Rizwan Wahab
- Department of Zoology, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia;
| | - Salim Manoharadas
- Central Laboratory, Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia;
| | - Basel F. Alrayes
- Central Laboratory, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia;
| | - Manawwer Alam
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (M.A.); (F.A.A.)
| | - Fahad A. Alharthi
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (M.A.); (F.A.A.)
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Manoharadas S, Altaf M, Alrefaei AF, Ahmad N, Althaf Hussain S, Al-Rayes BF. An Engineered Multimodular Enzybiotic against Methicillin-Resistant Staphylococcus aureus. Life (Basel) 2021; 11:1384. [PMID: 34947915 PMCID: PMC8705753 DOI: 10.3390/life11121384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 11/17/2022] Open
Abstract
Development of multidrug antibiotic resistance in bacteria is a predicament encountered worldwide. Researchers are in a constant hunt to develop effective antimicrobial agents to counter these dreadful pathogenic bacteria. Here we describe a chimerically engineered multimodular enzybiotic to treat a clinical isolate of methicillin-resistant Staphylococcus aureus (S. aureus). The cell wall binding domain of phage ϕ11 endolysin was replaced with a truncated and more potent cell wall binding domain from a completely unrelated protein from a different phage. The engineered enzybiotic showed strong activity against clinically relevant methicillin-resistant Staphylococcus aureus. In spite of a multimodular peptidoglycan cleaving catalytic domain, the engineered enzybiotic could not exhibit its activity against a veterinary isolate of S. aureus. Our studies point out that novel antimicrobial proteins can be genetically engineered. Moreover, the cell wall binding domain of the engineered protein is indispensable for a strong binding and stability of the proteins.
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Affiliation(s)
- Salim Manoharadas
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (M.A.); (N.A.); (S.A.H.); (B.F.A.-R.)
| | - Mohammad Altaf
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (M.A.); (N.A.); (S.A.H.); (B.F.A.-R.)
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- Department of Zoology, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia;
| | - Naushad Ahmad
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (M.A.); (N.A.); (S.A.H.); (B.F.A.-R.)
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
| | - Shaik Althaf Hussain
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (M.A.); (N.A.); (S.A.H.); (B.F.A.-R.)
- Department of Zoology, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia;
| | - Basel F. Al-Rayes
- Central Laboratory RM 63AA, College of Science, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia; (M.A.); (N.A.); (S.A.H.); (B.F.A.-R.)
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20
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Shahid M, Manoharadas S, Chakdar H, Alrefaei AF, Albeshr MF, Almutairi MH. Biological toxicity assessment of carbamate pesticides using bacterial and plant bioassays: An in-vitro approach. Chemosphere 2021; 278:130372. [PMID: 33839399 DOI: 10.1016/j.chemosphere.2021.130372] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/16/2021] [Accepted: 03/19/2021] [Indexed: 05/25/2023]
Abstract
In recent times, agricultural practices mainly rely on agrochemicals and pesticides to safe-guard edible crops against various pests and to ensure high yields. However, their indiscriminate use may cause severe environmental hazards that directly and negatively affect soil microorganisms and crop productivity. Considering these, present study was aimed to assess the toxicity of carbamate pesticides namely carbamoyl (CBL), methomyl (MML) and carbofuran (CBN) using bacterial and plant (Vigna mungo L.) bioassays. All pesticide doses (25-100 μg mL-1) showed negative effect on bacteria as well as plant. Growth, morphology, survival, cellular respiration and inner membrane permeability of Sinorhizobiumsaheli was hampered when exposed to pesticides. Pesticide induced morphological changes viz. aberrant margins; cellular cracking and distortion/damage in S. saheli were obvious under scanning electron microscope (SEM). The 100 μgCBNmL-1 had maximum inhibitory effect and it reduced survivability of S. saheli by 75%. In addition, biofilm formation ability of S. saheli was inhibited in a pesticides-dose dependent manner and it was statistically (p ≤ 0.05) significant. Pesticides indorsed significant changes in biomarker enzymatic assays and oxidative stress parameters towards S. saheli. Furthermore, at 100 μgCBNmL-1, germination efficiency, root, shoot length, plant survival and tolerance index of V. mungo were decrease by 50, 75, 65, 70 and 66%, respectively over control. Staining of pesticide treated roots with fluorescently labeled dyes propidium iodide (PI) and acridine orange (AO) showed increased oxidative stress, ROS generation and membrane permeability as revealed under confocal laser scanning microscope (CLSM). Furthermore, stressor metabolites and antioxidant enzymes in plant seedlings were progressively enhanced with increasing concentration of pesticides. Conclusively, present finding bestow an insights into a mechanistic approach of carbamate pesticide induced phyto, morpho and cellular toxic effects towards soil bacterium as well as plant with forthcoming implications for designing the pesticides to reduce their toxic/harmful effects.
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Affiliation(s)
- Mohammad Shahid
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India.
| | - Salim Manoharadas
- Department of Botany and Microbiology, Central Laboratory, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia.
| | - Hillol Chakdar
- Microbial Technology Unit II, ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh, 275103, India
| | - Abdulwahed F Alrefaei
- Department of Zoology, College of Science, King Saud University, P.O. Box. 2454, Riyadh, 11451, Saudi Arabia
| | - Mohammed F Albeshr
- Department of Zoology, College of Science, King Saud University, P.O. Box. 2454, Riyadh, 11451, Saudi Arabia
| | - Mikhlid H Almutairi
- Department of Zoology, College of Science, King Saud University, P.O. Box. 2454, Riyadh, 11451, Saudi Arabia
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21
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Altaf M, Zeyad MT, Hashmi MA, Manoharadas S, Hussain SA, Ali Abuhasil MS, Almuzaini MAM. Effective inhibition and eradication of pathogenic biofilms by titanium dioxide nanoparticles synthesized using Carum copticum extract. RSC Adv 2021; 11:19248-19257. [PMID: 35478667 PMCID: PMC9033554 DOI: 10.1039/d1ra02876f] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/19/2021] [Indexed: 12/13/2022] Open
Abstract
Most bacteria exist in nature in the form of biofilms. One of the key survival strategies by bacteria to withstand chemical and physical stresses is by forming biofilms on biotic and abiotic surfaces. A different set of genes are expressed in biofilms compared to the planktonic mode of bacterial growth. According to data from the National Institutes of Health (NIH) and Centers for Disease Control and Prevention (CDC), nearly 80 percent of all human infections are encouraged by biofilms and roughly 65 percent of all hospital-acquired infections are associated with biofilms. Hence, considering the role of biofilms in clinical settings, there is an urgent need for the discovery/development of novel antibiofilm agents. In this study, we have tested the effect of freshly prepared titanium dioxide nanoparticles (TiO2-NPs) synthesized using Carum copticum extract on biofilms, both against Gram +ve and Gram −ve bacteria. Being environment friendly in nature, the green route of nanoparticle synthesis is believed to be advantageous over chemical synthesis of metal nanoparticles. The synthesized nanoparticles were found to be predominantly spherical or spheroidal in shape with an average size of 12.01 ± 5.58 nm. As evident from data, more than 70% inhibition of biofilms of test bacteria was achieved in the presence of TiO2-NPs. Electron microscopic analysis revealed that the adherence and colonization of bacteria on the glass surface were remarkably reduced by the treatment of TiO2-NPs. The EPS secretion of E. coli ATCC 25922 and P. aeruginosa PAO1 were inhibited by 62.08 and 74.94%, respectively. The EPS secretion of S. aureus MTCC 3160 was least inhibited (<55%) compared to other test bacteria. Moreover, TiO2-NPs successfully eradicated the preformed biofilms of E. coli ATCC 25922, P. aeruginosa PAO1, and S. aureus MTCC 3160 by 60.09, 64.14, and 48.30%, respectively. The findings demonstrate the efficacy of green synthesized titanium dioxide nanoparticles in inhibiting and eradicating the biofilms of bacterial pathogens and they may be further exploited for the development of a new alternative antibiofilm agent. Titanium dioxide nanoparticles inhibits and eradicates the biofilms of pathogenic bacteria.![]()
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Affiliation(s)
- Mohammad Altaf
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia.,Central Laboratory, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Mohammad Tarique Zeyad
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University Aligarh UP-202002 India
| | - Md Amiruddin Hashmi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University Aligarh UP-202002 India
| | - Salim Manoharadas
- Central Laboratory, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Shaik Althaf Hussain
- Central Laboratory, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Mohammed Saeed Ali Abuhasil
- Department of Food Science and Nutrition, College of Food & Agriculture Sciences, King Saud University Riyadh 11451 Saudi Arabia
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22
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Danish M, Altaf M, Robab MI, Shahid M, Manoharadas S, Hussain SA, Shaikh H. Green Synthesized Silver Nanoparticles Mitigate Biotic Stress Induced by Meloidogyne incognita in Trachyspermum ammi (L.) by Improving Growth, Biochemical, and Antioxidant Enzyme Activities. ACS Omega 2021; 6:11389-11403. [PMID: 34056294 PMCID: PMC8153911 DOI: 10.1021/acsomega.1c00375] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/02/2021] [Indexed: 05/27/2023]
Abstract
Meloidogyne incognita is an important plant-parasitic nematode that causes significant crop losses all over the world. The primary control strategy for this pathogen is still based on nematicides, which are hazardous to human health and the environment. Considering these problems, this study aimed to determine the efficacy of different concentrations (25, 50, and 100 ppm) of silver nanoparticles against M. incognita on Trachyspermum ammi. Silver nanoparticles synthesized from Senna siamea were thoroughly characterized using various physicochemical techniques, viz., UV-visible spectrophotometer, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive X-ray analyzer (EDX). Results revealed that plants treated with 50 ppm silver nanoparticles one week before M. incognita inoculation (T2) exhibited maximum and significant (p ≤ 0.05) increases in plant growth, biochemical characteristics, and activities of defense enzymes such as peroxidase, catalase, superoxide dismutase, and ascorbate peroxidase over the inoculated control (IC) plants. Furthermore, the maximum reduction in the number of galls, egg masses, and root-knot indices was recorded in plants treated with 100 ppm silver nanoparticles (T3) followed by plants treated with 50 ppm silver nanoparticles before nematode inoculation (T2), over inoculated plants (IC). Anatomical studies showed accumulation of lignin in the transverse section (TS) of roots treated with 50 ppm silver nanoparticles. As a result, the present finding strongly suggests that silver nanoparticles synthesized from S. siamea had nematicidal activity, and it could be an efficient, safe, cost-effective, and affordable alternative to chemical nematicide.
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Affiliation(s)
- Mohammad Danish
- Section
of Plant Pathology and Nematology, Department of Botany, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Mohammad Altaf
- Department
of Chemistry, College of Science, King Saud
University, Riyadh 11451, Saudi Arabia
- Central
Laboratory, College of Science, King Saud
University, Riyadh 11451, Saudi Arabia
| | - Merajul Islam Robab
- Department
of Botany, School of Sciences, Maulana Azad
National Urdu University, Hyderabad 500032, India
| | - Mohammad Shahid
- Department
of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Salim Manoharadas
- Central
Laboratory, College of Science, King Saud
University, Riyadh 11451, Saudi Arabia
| | - Shaik Althaf Hussain
- Central
Laboratory, College of Science, King Saud
University, Riyadh 11451, Saudi Arabia
| | - Hisamuddin Shaikh
- Section
of Plant Pathology and Nematology, Department of Botany, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
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23
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Qais FA, Ahmad I, Altaf M, Manoharadas S, Al-Rayes BF, Ali Abuhasil MS, Almaroai YA. Biofabricated silver nanoparticles exhibit broad-spectrum antibiofilm and antiquorum sensing activity against Gram-negative bacteria. RSC Adv 2021; 11:13700-13710. [PMID: 35423900 PMCID: PMC8697519 DOI: 10.1039/d1ra00488c] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/17/2021] [Indexed: 12/29/2022] Open
Abstract
The emergence and spread of antimicrobial resistance (AMR) among bacterial pathogens have created a global threat to human health and the environment. Targeting the quorum sensing (QS) linked virulent traits of bacteria is considered to be a novel approach for addressing the problem of AMR. In this study, green synthesized silver nanoparticles (AgNPs-MK) were evaluated for the inhibition of the formation of biofilms and quorum sensing controlled virulence factors against three Gram negative bacteria. Remarkable inhibition (>80%) of QS-mediated violacein production was recorded in C. violaceum 12472. Up to 90% inhibition of the QS-mediated virulent traits of S. marcescens MTCC 97 was observed. The virulence factors of P. aeruginosa PAO1 also decreased in a dose dependent manner in the presence of AgNPs-MK. Moreover, the development of biofilms of C. violaceum 12472, S. marcescens MTCC 97, and P. aeruginosa PAO1 was reduced by 87.39, 81.54, and 71.34%, respectively. Biofilms on glass surfaces were remarkably reduced, with less aggregation of bacterial cells and the reduced formation of extra polymeric substances. The findings clearly show the efficacy of AgNPs-MK against the development of biofilms and the QS mediated virulent traits of Gram negative bacterial pathogens. AgNPs-MK may be further exploited for the development of alternative antimicrobial agents after careful scrutiny in animal models for the management of bacterial infections, especially for topical applications.
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Affiliation(s)
- Faizan Abul Qais
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University Aligarh UP 202002 India +91-571-2703516 +91-571-2703516
| | - Iqbal Ahmad
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University Aligarh UP 202002 India +91-571-2703516 +91-571-2703516
| | - Mohammad Altaf
- Department of Chemistry, College of Science, King Saud University PO Box 2455 Riyadh 11451 Saudi Arabia
- Central Laboratory, College of Science, King Saud University PO Box 2455 Riyadh 11451 Saudi Arabia
| | - Salim Manoharadas
- Central Laboratory, College of Science, King Saud University PO Box 2455 Riyadh 11451 Saudi Arabia
| | - Basel F Al-Rayes
- Central Laboratory, College of Science, King Saud University PO Box 2455 Riyadh 11451 Saudi Arabia
| | - Mohammed Saeed Ali Abuhasil
- Department of Food Science and Nutrition, College of Agriculture and Food Science, King Saud University Riyadh Saudi Arabia
| | - Yaser Ayesh Almaroai
- Department of Biology, College of Science, Umm Al-Qura University Makkah 673 Saudi Arabia
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Shahid M, Manoharadas S, Altaf M, Alrefaei AF. Organochlorine Pesticides Negatively Influenced the Cellular Growth, Morphostructure, Cell Viability, and Biofilm-Formation and Phosphate-Solubilization Activities of Enterobacter cloacae Strain EAM 35. ACS Omega 2021; 6:5548-5559. [PMID: 33681595 PMCID: PMC7931423 DOI: 10.1021/acsomega.0c05931] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 02/05/2021] [Indexed: 05/08/2023]
Abstract
An in vitro study was conducted to assess the impact of organochlorine pesticides (OCPs) on cellular growth, morphology, cell viability, biofilm-formation activity, and growth-regulating substances of a soil bacterium. Phosphate-solubilizing EAM 35 isolated from rhizosphere soil was molecularly identified as Enterobacter cloacae (accession number MT672578.1). Strain EAM 35 tolerated varying levels of OCPs, viz., benzene hexachloride (BHC), chlorpyrifos (CP), dieldrin (DE), and endosulfan (ES). The toxicity of OCPs to strain EAM 35 was displayed in a concentration-dependent manner. Among the OCPs, ES at a concentration of 200 μM showed a higher toxicity, where it maximally reduced the bacterial synthesis of indole-3-acetic acid (IAA), salicylic acid (SA), and 2,3-dihydroxy-benzoic acid (DHBA) by 73% (p ≤ 0.001), 85% (p ≤ 0.005), and 83% (p ≤ 0.001), respectively, over the control. While comparing the toxicity of OCPs to P-solubilizing activity of E. cloacae after 10 days of growth, the toxicity pattern followed the order ES (mean value = 82.6 μg mL-1) > CP (mean value = 93.2 μg mL-1) > DE (mean value = 113.6 μg mL-1) > BHC (mean value = 127 μg mL-1). Furthermore, OCP-induced surface morphological distortion in E. cloacae EAM 35 was observed as gaps, pits on both cellular facets, and fragmented and disorganized cell structure under a scanning electron microscope (SEM). The membrane-compromised cells increased as the concentrations of OC pesticides increased from 25 to 200 μM. Additionally, microbial counts (log10 CFU/mL) were also affected after pesticide exposure and decreased with increasing concentrations. While assessing the impact of OCPs on inhibition (%) of log10 CFU/mL, 150, 175, and 200 μM concentrations of ES completely reduced the growth of E. cloacae. Similarly, while comparing the toxicity of higher concentrations of OCPs to bacterial growth, sensitivity followed the order ES > DE > CP > BHC. In addition, the biofilm-formation ability of strain EAM 35 was inhibited in a pesticide-dose-dependent manner, and it was statistically (p ≤ 0.05, p ≤ 0.005, and p ≤ 0.001) significant. Conclusively, the present study clearly suggests that before applying pesticides to soil, their recommended dose should carefully be monitored.
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Affiliation(s)
- Mohammad Shahid
- Department
of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
- . Tel: +91-08090939511
| | - Salim Manoharadas
- Department
of Botany and Microbiology, Central Laboratory, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammad Altaf
- Department
of Botany and Microbiology, Central Laboratory, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
- Department
of Chemistry, Central Laboratory, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- Department
of Zoology, College of Science, King Saud
University, P.O. Box. 2454, Riyadh 11451, Saudi Arabia
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Mamkulathil Devasia R, Altaf M, Fahad Alrefaei A, Manoharadas S. Enhanced production of camptothecin by immobilized callus of Ophiorrhiza mungos and a bioinformatic insight into its potential antiviral effect against SARS-CoV-2. J King Saud Univ Sci 2021; 33:101344. [PMID: 33531790 PMCID: PMC7826111 DOI: 10.1016/j.jksus.2021.101344] [Citation(s) in RCA: 10] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/27/2020] [Accepted: 01/11/2021] [Indexed: 05/28/2023]
Abstract
Camptothetin (CPT) is a quinoline alkaloid originally isolated from the Chinese tree, Camptotheca acuminata Decne. CPT was found to have anticancerous and antiviral properties. Derivatives of natural CPT, including topothecan and irinotecan are used clinically to treat a variety of cancers. Apart from Camptotheca acuminata Decne, CPT production was also found in the perennial plant Ophiorrhiza mungos. In this study we attempted the immobilization of the tissue culture grown callus of Ophiorrhiza mungos for the continuous production of a higher concentration of CPT. As evident from previous studies about the antiviral effects of CPT, we wanted to bioinformatically analyze the binding potential of CPT towards two important proteins of SARS-CoV-2, protease (Mpro) and RNA dependent RNA polymerase (RdRp). Further docking analysis of the CPT against the exterior spike glycoprotein of SARS-CoV-2 was also done to determine their potential interaction. The immobilized callus of Ophiorrhiza mungos produced CPT at a concentration of 420 µg/l by the end of 12 days of growth. The HPLC analysis was done to determine the purity of the CPT synthesized by the immobilization technique. The bioinformatic analysis revealed a higher binding efficiency of CPT and its derivatives, toptecan and irinotecan against Mpro and RdRp. The docking analysis of CPT against the spike glycoprotein of SARS-CoV-2 showed hydrogen bonding with the amino acids at K466 with a bond distance of 2.56A° and K355 with a bond distance of 2.40A°. This finding was of particular importance that other compounds including hydroxychloroquine sulphate, lopinavir and ivermectin could bind with the spike protein only by weak Vander wall bonds and no hydrogen bond formation was noticed. Our studies hence evaluate the efficiency of CPT against SARS-CoV-2, by potentially blocking the interaction of the spike glycoprotein with the angiotensin-converting enzyme 2 (ACE2) receptor found on host cells.
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Affiliation(s)
| | - Mohammad Altaf
- King Saud University, Central Laboratory, Department of Chemistry, College of Science, P.O. Box. 2454, Riyadh 11451, Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- King Saud University, Department of Zoology, College of Science, P.O. Box. 2454, Riyadh 11451, Saudi Arabia
| | - Salim Manoharadas
- King Saud University, Central Laboratory, Department of Botany and Microbiology, College of Science, P.O. Box. 2454, Riyadh 11451, Saudi Arabia
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26
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Altaf M, Manoharadas S, Zeyad MT. Green synthesis of cerium oxide nanoparticles using Acorus calamus extract and their antibiofilm activity against bacterial pathogens. Microsc Res Tech 2021; 84:1638-1648. [PMID: 33559164 DOI: 10.1002/jemt.23724] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 12/13/2022]
Abstract
The emergence of multidrug resistance in bacterial pathogens has increased drastically and it has become prevalent in clinical infections. In last few decades, there is a large gap in the discovery of new antibiotics with novel mode of action. The situation of antimicrobial resistance has become so alarming that if not action is taken, infectious diseases will become major cause of global mortality and morbidity by 2050. The growing interest of researchers in nanotechnology and their possible application in healthcare is being seen as a new hope in discovery of novel antimicrobial agents. Among various approaches employed for the nanoparticle synthesis, biological methods are considered more advantageous and environment friendly. Biofilms are considered as novel target for the development of new antimicrobial entities. In this study, cerium oxide nanoparticles (CeO2 -NPs) were synthesized using Acorus calamus aqueous extract and tested for the antibiofilm activity both against Gram +ve and Gram -ve bacteria. The average size of synthesized CeO2 -NPs was found to be 22.03 nm. The biofilms of the test bacteria were inhibited by more than 75% by the treatment with CeO2 -NPs. The quantitative biofilm data were further verified by light microscopy, electron microscopy, and confocal microscopy. The confocal and electron microscopic analysis confirmed that treatment with CeO2-NPs reduced the development and colonization of the bacteria on solid support. Moreover, it was found that the colonization and biofilm development by test bacteria were fairly reduced on the glass surface. Moreover, a dose-dependent inhibition of preformed biofilms was also found. The exopolysaccharides (EPS) production by the test bacteria were substantially reduced by the supplementation of CeO2 -NPs in culture media. The findings of this study highlight the efficacy of cerium oxide nanoparticles against bacterial pathogens that may be exploited for the development of new alternative antimicrobial agent.
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Affiliation(s)
- Mohammad Altaf
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia.,Central Laboratory, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Salim Manoharadas
- Central Laboratory, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad Tarique Zeyad
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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Manoharadas S, Altaf M, Alrefaei AF, Hussain SA, Devasia RM, Badjah Hadj AYM, Abuhasil MSA. Microscopic analysis of the inhibition of staphylococcal biofilm formation by Escherichia coli and the disruption of preformed staphylococcal biofilm by bacteriophage. Microsc Res Tech 2021; 84:1513-1521. [PMID: 33470479 DOI: 10.1002/jemt.23707] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/28/2020] [Accepted: 01/05/2021] [Indexed: 11/10/2022]
Abstract
The formation of bacterial biofilms is a severely encountered problem in clinical and industrial settings. Most of the naturally occurring bacterial strains are capable of forming mono or mixed biofilms. In this study, we evaluated the potentiality of three clinically relevant species in forming mono and mixed biofilms over glass surface. In addition, we also appraised the efficiency of bacteriophages in alleviating preformed mono and mixed biofilm. Our initial study focused on the ability of Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa in forming biofilm on glass cover slip. All the three strains were able to form mono biofilm, although at varying intensities. Interestingly, E. coli inhibited the formation of S. aureus biofilm in a mixed culture. Specific bacteriophages ɸ44AHJD and ɸX174 completely disrupted S. aureus and E. coli preformed biofilm structure after 72 hr of incubation. However, addition of either of the bacteriophage to the mixed E. coli-S. aureus promoted the formation of biofilm by the alternate strain that was not affected by the phage. Our findings elicit the potentiality of common bacterial strains in forming biofilms on smooth glass surface. In addition, these results are very promising for the development of effective drugs using intact bacteriophages for the removal of complicated bacterial biofilms formed in clinically relevant glass surfaces. The observations further complemented the earlier finding of competitive inhibition of S. aureus biofilm development by E. coli.
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Affiliation(s)
- Salim Manoharadas
- Department of Botany and Microbiology, Central Laboratory, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad Altaf
- Department of Chemistry, Central Laboratory, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Shaik Althaf Hussain
- Department of Zoology, Central Laboratory, King Saud University, College of Science, Riyadh, Saudi Arabia
| | - Rajesh Mamkulathil Devasia
- Department of Molecular Biology, SCMS Institute of Bioscience and Biotechnology, South Kalamassery, Kochi, Kerala, India
| | | | - Mohammed Saeed Ali Abuhasil
- Department of Food Science and Nutrition, College of Agriculture and Food Science, King Saud University, Riyadh, Saudi Arabia
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Manoharadas S, Altaf M, Alrefaei AF, Devasia RM, Badjah Hadj AYM, Abuhasil MSA. Concerted dispersion of Staphylococcus aureus biofilm by bacteriophage and 'green synthesized' silver nanoparticles. RSC Adv 2021; 11:1420-1429. [PMID: 35424119 PMCID: PMC8693614 DOI: 10.1039/d0ra09725j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 12/15/2020] [Indexed: 12/13/2022] Open
Abstract
Staphylococcal biofilms predominantly cause persistent nosocomial infections. The widespread antibiotic resistance followed by its ability to form biofilm in biological and inert surfaces often contributes to major complications in patients and veterinary animals. Strategic importance of bacteriophage therapy against critical staphylococcal infections had been predicted ever since the advent of antibiotic resistant staphylococcal strains. The significance of metal nanoparticles in quenching biofilm associated bacteria was previously reported. In this study, we demonstrate a concerted action of ‘green synthesized’ silver nanoparticles and bacteriophages in removing pre-formed Staphylococcus aureus biofilms from an inert glass surface in a time dependent manner. Our results demonstrate, for the first time, the rapid co-operative dispersion of the bacterial biofilm. In addition, the synergistic activity of the nanoparticles and bacteriophages causes the loss of viability of the biofilm entrapped bacterial cells thus preventing establishment of a new infection and subsequent colonization. This work further opens up a platform for the combinational therapeutic approach with a variety of nanoparticles and bacteriophages against mono or poly bacterial biofilm in environmental, industrial or clinical settings. Formation of biofilm by Staphylococcus aureus ‘Rumba’ on untreated glass surface and a concerted disruption of the biofilm by silver nanoparticle and phage ϕ44AHJD.![]()
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Affiliation(s)
- Salim Manoharadas
- King Saud University, Department of Botany and Microbiology, Central Laboratory RM 55A College of Science Building 5, P.O. Box. 2454 Riyadh 11451 Saudi Arabia +966-14699665 +966-114689170
| | - Mohammad Altaf
- King Saud University, Department of Botany and Microbiology, Central Laboratory RM 55A College of Science Building 5, P.O. Box. 2454 Riyadh 11451 Saudi Arabia +966-14699665 +966-114689170.,King Saud University, Department of Chemistry, College of Science P.O. Box. 2454 Riyadh 11451 Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- King Saud University, Department of Zoology, College of Science P.O. Box. 2454 Riyadh 11451 Saudi Arabia
| | | | - Ahmed Yacine M Badjah Hadj
- King Saud University, Department of Chemistry, College of Science P.O. Box. 2454 Riyadh 11451 Saudi Arabia
| | - Mohammed Saeed Ali Abuhasil
- King Saud University, Department of Food Science and Nutrition, College of Agriculture and Food Science P.O. Box. 2454 Riyadh 11451 Saudi Arabia
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Märtens B, Manoharadas S, Hasenöhrl D, Zeichen L, Bläsi U. Back to translation: removal of aIF2 from the 5'-end of mRNAs by translation recovery factor in the crenarchaeon Sulfolobus solfataricus. Nucleic Acids Res 2014; 42:2505-11. [PMID: 24271401 PMCID: PMC3936769 DOI: 10.1093/nar/gkt1169] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 10/29/2013] [Accepted: 10/30/2013] [Indexed: 11/13/2022] Open
Abstract
The translation initiation factor aIF2 of the crenarchaeon Sulfolobus solfataricus (Sso) recruits initiator tRNA to the ribosome and stabilizes mRNAs by binding via the γ-subunit to their 5'-triphosphate end. It has been hypothesized that the latter occurs predominantly during unfavorable growth conditions, and that aIF2 or aIF2-γ is released on relief of nutrient stress to enable in particular anew translation of leaderless mRNAs. As leaderless mRNAs are prevalent in Sso and aIF2-γ bound to the 5'-end of a leaderless RNA inhibited ribosome binding in vitro, we aimed at elucidating the mechanism underlying aIF2/aIF2-γ recycling from mRNAs. We have identified a protein termed Trf (translation recovery factor) that co-purified with trimeric aIF2 during outgrowth of cells from prolonged stationary phase. Subsequent in vitro studies revealed that Trf triggers the release of trimeric aIF2 from RNA, and that Trf directly interacts with the aIF2-γ subunit. The importance of Trf is further underscored by an impaired protein synthesis during outgrowth from stationary phase in a Sso trf deletion mutant.
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Affiliation(s)
- Birgit Märtens
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, Center of Molecular Biology, University of Vienna, Dr. Bohrgasse 9, 1030 Vienna, Austria
| | - Salim Manoharadas
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, Center of Molecular Biology, University of Vienna, Dr. Bohrgasse 9, 1030 Vienna, Austria
| | - David Hasenöhrl
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, Center of Molecular Biology, University of Vienna, Dr. Bohrgasse 9, 1030 Vienna, Austria
| | - Lukas Zeichen
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, Center of Molecular Biology, University of Vienna, Dr. Bohrgasse 9, 1030 Vienna, Austria
| | - Udo Bläsi
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, Center of Molecular Biology, University of Vienna, Dr. Bohrgasse 9, 1030 Vienna, Austria
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Märtens B, Amman F, Manoharadas S, Zeichen L, Orell A, Albers SV, Hofacker I, Bläsi U. Alterations of the transcriptome of Sulfolobus acidocaldarius by exoribonuclease aCPSF2. PLoS One 2013; 8:e76569. [PMID: 24116119 PMCID: PMC3792030 DOI: 10.1371/journal.pone.0076569] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 08/24/2013] [Indexed: 11/24/2022] Open
Abstract
Recent studies identified a 5´ to 3´ exoribonuclease termed Sso-RNase J in the crenarchaeon Sulfolobus solfataricus (Sso), which has been reclassified to the aCPSF2 (archaeal cleavage and polyadenylation specificity factor 2) group of β-CASP proteins. In this study, the Sso-aCPSF2 orthologue of Sulfolobus acidocaldarius (Saci-aCPSF2) was functionally characterized. Like Sso-aCPSF2, Saci-aCPSF2 degrades RNA with 5´ to 3´ directionality in vitro. To address the biological significance of Saci-aCPSF2, a deletion mutant was constructed, and the influence of Saci-aCPSF2 on the transcriptome profile was assessed employing high throughput RNA sequencing. This analysis revealed 560 genes with differential transcript abundance, suggesting a considerable role of this enzyme in RNA metabolism. In addition, bioinformatic analyses revealed several transcripts that are preferentially degraded at the 5´ end. This was exemplarily verified for two transcripts by Northern-blot analyses, showing for the first time that aCPSF2 proteins play a role in 5' to 3' directional mRNA decay in the crenarchaeal clade of Archaea.
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Affiliation(s)
- Birgit Märtens
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center of Molecular Biology, University of Vienna, Vienna, Austria
| | - Fabian Amman
- Institute for Theoretical Chemistry, University Vienna, Vienna, Austria
- Department of Computer Science and Interdisciplinary Center for Bioinformatics, University of Leipzig, Leipzig, Germany
| | - Salim Manoharadas
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center of Molecular Biology, University of Vienna, Vienna, Austria
| | - Lukas Zeichen
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center of Molecular Biology, University of Vienna, Vienna, Austria
| | - Alvaro Orell
- Molecular Biology of Archaea, Max-Planck Institute for Terrestrial Microbiology, Marburg, Germany
| | - Sonja-Verena Albers
- Molecular Biology of Archaea, Max-Planck Institute for Terrestrial Microbiology, Marburg, Germany
| | - Ivo Hofacker
- Institute for Theoretical Chemistry, University Vienna, Vienna, Austria
| | - Udo Bläsi
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center of Molecular Biology, University of Vienna, Vienna, Austria
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Byrgazov K, Manoharadas S, Kaberdina AC, Vesper O, Moll I. Direct interaction of the N-terminal domain of ribosomal protein S1 with protein S2 in Escherichia coli. PLoS One 2012; 7:e32702. [PMID: 22412910 PMCID: PMC3296737 DOI: 10.1371/journal.pone.0032702] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Accepted: 01/30/2012] [Indexed: 11/19/2022] Open
Abstract
Despite of the high resolution structure available for the E. coli ribosome, hitherto the structure and localization of the essential ribosomal protein S1 on the 30 S subunit still remains to be elucidated. It was previously reported that protein S1 binds to the ribosome via protein-protein interaction at the two N-terminal domains. Moreover, protein S2 was shown to be required for binding of protein S1 to the ribosome. Here, we present evidence that the N-terminal domain of S1 (amino acids 1-106; S1(106)) is necessary and sufficient for the interaction with protein S2 as well as for ribosome binding. We show that over production of protein S1(106) affects E. coli growth by displacing native protein S1 from its binding pocket on the ribosome. In addition, our data reveal that the coiled-coil domain of protein S2 (S2α(2)) is sufficient to allow protein S1 to bind to the ribosome. Taken together, these data uncover the crucial elements required for the S1/S2 interaction, which is pivotal for translation initiation on canonical mRNAs in gram-negative bacteria. The results are discussed in terms of a model wherein the S1/S2 interaction surface could represent a possible target to modulate the selectivity of the translational machinery and thereby alter the translational program under distinct conditions.
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Affiliation(s)
- Konstantin Byrgazov
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - Salim Manoharadas
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - Anna C. Kaberdina
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - Oliver Vesper
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - Isabella Moll
- Max F. Perutz Laboratories, Department of Microbiology, Immunobiology and Genetics, Center for Molecular Biology, University of Vienna, Vienna, Austria
- * E-mail:
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Manoharadas S, Witte A, Bläsi U. Antimicrobial activity of a chimeric enzybiotic towards Staphylococcus aureus. J Biotechnol 2008; 139:118-23. [PMID: 18940209 DOI: 10.1016/j.jbiotec.2008.09.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 09/09/2008] [Accepted: 09/15/2008] [Indexed: 10/21/2022]
Abstract
Phage lytic enzymes (enzybiotics) have gained attention as prospective tools to eradicate Gram-positive pathogens resistant to antibiotics. Attempts to purify the P16 endolysin of Staphylococcus aureus phage P68 were unsuccessful owing to the poor solubility of the protein. To overcome this limitation, we constructed a chimeric endolysin (P16-17) comprised of the inferred N-terminal d-alanyl-glycyl endopeptidase domain and the C-terminal cell wall targeting domain of the S. aureus phage P16 endolysin and the P17 minor coat protein, respectively. The domain swapping approach and the applied purification procedure resulted in soluble P16-17 protein, which exhibited antimicrobial activity towards S. aureus. In addition, P16-17 augmented the antimicrobial efficacy of the antibiotic gentamicin. This synergistic effect could be useful to reduce the effective dose of aminoglycoside antibiotics.
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Affiliation(s)
- Salim Manoharadas
- Max F. Perutz Laboratories, Department of Microbiology and Immunobiology, University of Vienna, Dr. Bohrgasse 9, A-1030 Vienna, Austria
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