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Jaiswal AK, Jose CT, Ramesh R, Nanani VK, Sadeghi K, Joshi A, Kompally K, Pathikonda G, Emady HN, Bheda B, Kavouras SA, Rykaczewski K. Simultaneous imaging of multi-pore sweat dynamics and evaporation rate measurement using wind tunnel ventilated capsule with infrared window. iScience 2024; 27:110304. [PMID: 39040057 PMCID: PMC11261446 DOI: 10.1016/j.isci.2024.110304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/20/2024] [Accepted: 06/16/2024] [Indexed: 07/24/2024] Open
Abstract
Sweat evaporation is critical to human thermoregulation, but current understanding of the process on 20 μm to 2 cm scale is limited. To this end, we introduce a wind-tunnel-shaped ventilated capsule with an infrared window for simultaneous infrared sweat imaging and evaporation rate measurement. Implementing the capsule in pilot human subject tests suggests that the common assumption of sweat being an isothermal film is only valid when the evaporation rate is low and sweat forms puddles on the skin. Before transitioning to this filmwise mode, sweating occurs in cyclic dropwise mode, displaying a 3x higher mass transfer coefficient in the same conditions. Imaging highlighted distinct phenomena occurring during and between these modes including out-of-duct evaporation, pulsating droplets, temporary and eventually lasting crevice filling, and individual drop-to-film spreading. In all, sweat evaporation is an impactful area that our results show is ripe for exploration, which can be achieved quantitatively using the introduced platform.
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Affiliation(s)
- Ankush K. Jaiswal
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
- Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ 85287, USA
| | - Cibin T. Jose
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Rajesh Ramesh
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Vinay K. Nanani
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Kambiz Sadeghi
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
- Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ 85287, USA
| | - Ankit Joshi
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
- Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ 85287, USA
| | - Krishna Kompally
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Gokul Pathikonda
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Heather N. Emady
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Bhaumik Bheda
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Stavros A. Kavouras
- College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA
| | - Konrad Rykaczewski
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
- Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ 85287, USA
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Manjit M, Kumar M, Kumar K, Dhondale MR, Jha A, Bharti K, Rain Z, Prakash P, Mishra B. Fabrication of dual drug-loaded polycaprolactone-gelatin composite nanofibers for full thickness diabetic wound healing. Ther Deliv 2023. [PMID: 38124684 DOI: 10.4155/tde-2023-0083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Aim: Design of moxifloxacin and ornidazole co-loaded polycaprolactone and gelatin nanofiber dressing for diabetic wounds. Materials & methods: The composite nanofibers were prepared using electrospinning technique and characterized for in vitro drug release, antibacterial activity, laser doppler and in vivo wound healing. Results: The optimized nanofiber demonstrated an interconnected bead free nanofiber with average diameter <200 nm. The in vitro drug release & antimicrobial studies revealed that optimized nanofiber provided drug release for >120 h, thereby inhibiting growth of Escherichia coli and Stapyhlococcus aureus. An in vivo wound closure study on diabetic rats found that optimized nanofiber group had a significantly higher wound closure rate than marketed formulation. Conclusion: The nanofiber provided prolonged drug release and accelerated wound healing, making it a promising candidate for diabetic wound care.
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Affiliation(s)
- Manjit Manjit
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Manish Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Krishan Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Madhukiran R Dhondale
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Abhishek Jha
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Kanchan Bharti
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Zinnu Rain
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Pradyot Prakash
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Brahmeshwar Mishra
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
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Chen J, Long W, Dong B, Cao W, Yuhang X, Meng Y, Xiaoqin C. Hexagonal liquid crystalline system containing Cinnamaldehyde for enhancement of skin permeation of Sinomenine hydrochloride. Pharm Dev Technol 2022; 27:684-694. [PMID: 35880620 DOI: 10.1080/10837450.2022.2107011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Sinomenine hydrochloride (SH) is usually applied to treat rheumatoid arthritis (RA) with severe side effect due to oral administration. Cinnamaldehyde (CA) as essential oil possesses anti-RA effect and can facilitate transdermal penetration. Hence, this study developed hexagonal liquid crystalline (HII) gels to deliver two components (SH and CA) across the skins. HII gels were prepared and characterized by polarized light microscopy (PLM), small-angle X-ray scattering (SAXS) and rheology. Moreover, in vitro drug release behavior and ex vivo skin permeation were investigated. Finally, Fourier transform infrared spectral analysis (FTIR) and confocal laser scanning microscopy (CLSM) were used to explore the skin penetration mechanism. PLM and SAXS showed that the inner structure of the gels was HII phase. The addition of lipophilic or hydrophilic molecule slowed down one another's release and the release model was dominated by Fickian diffusion (n< 0.43). Furthermore, in vitro permeation studies indicated that appropriate CA could improve the skin permeability of SH. FTIR and CLSM suggested that infiltration occurred due to disruption of the lipid bilayer structure and increased fluidity of the skin. In conclusion, HII gels and CA exhibited a penetration-promoting effect for transdermal applications in SH.
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Affiliation(s)
- Jingbao Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Wu Long
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Baoqi Dong
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Wenxuan Cao
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Xu Yuhang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Yun Meng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Chu Xiaoqin
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.,Engineering Technology Research Center of Modernized Pharmaceutics, Anhui Education Department (AUCM), Hefei, Anhui, 230012, China.,Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei 230012, China
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Patel D, Patel B, Thakkar H. Lipid Based Nanocarriers: Promising Drug Delivery System for Topical Application. EUR J LIPID SCI TECH 2021. [DOI: 10.1002/ejlt.202000264] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Darshana Patel
- Faculty of Pharmacy The Maharaja Sayajirao University of Baroda Vadodara Gujarat 390 001 India
| | - Brijesh Patel
- Faculty of Pharmacy The Maharaja Sayajirao University of Baroda Vadodara Gujarat 390 001 India
| | - Hetal Thakkar
- Faculty of Pharmacy The Maharaja Sayajirao University of Baroda Vadodara Gujarat 390 001 India
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Alhosani A, Scanziani A, Lin Q, Selem A, Pan Z, Blunt MJ, Bijeljic B. Three-phase flow displacement dynamics and Haines jumps in a hydrophobic porous medium. Proc Math Phys Eng Sci 2021; 476:20200671. [PMID: 33402876 PMCID: PMC7776970 DOI: 10.1098/rspa.2020.0671] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/19/2020] [Indexed: 11/12/2022] Open
Abstract
We use synchrotron X-ray micro-tomography to investigate the displacement dynamics during three-phase—oil, water and gas—flow in a hydrophobic porous medium. We observe a distinct gas invasion pattern, where gas progresses through the pore space in the form of disconnected clusters mediated by double and multiple displacement events. Gas advances in a process we name three-phase Haines jumps, during which gas re-arranges its configuration in the pore space, retracting from some regions to enable the rapid filling of multiple pores. The gas retraction leads to a permanent disconnection of gas ganglia, which do not reconnect as gas injection proceeds. We observe, in situ, the direct displacement of oil and water by gas as well as gas–oil–water double displacement. The use of local in situ measurements and an energy balance approach to determine fluid–fluid contact angles alongside the quantification of capillary pressures and pore occupancy indicate that the wettability order is oil–gas–water from most to least wetting. Furthermore, quantifying the evolution of Minkowski functionals implied well-connected oil and water, while the gas connectivity decreased as gas was broken up into discrete clusters during injection. This work can be used to design CO2 storage, improved oil recovery and microfluidic devices.
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Affiliation(s)
- Abdulla Alhosani
- Department of Earth Science and Engineering, Imperial College London, London, UK
| | - Alessio Scanziani
- Department of Earth Science and Engineering, Imperial College London, London, UK
| | - Qingyang Lin
- State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Ahmed Selem
- Department of Earth Science and Engineering, Imperial College London, London, UK
| | - Ziqing Pan
- Department of Chemical Engineering, Imperial College London, London, UK
| | - Martin J Blunt
- Department of Earth Science and Engineering, Imperial College London, London, UK
| | - Branko Bijeljic
- Department of Earth Science and Engineering, Imperial College London, London, UK
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Alhosani A, Scanziani A, Lin Q, Foroughi S, Alhammadi AM, Blunt MJ, Bijeljic B. Dynamics of water injection in an oil-wet reservoir rock at subsurface conditions: Invasion patterns and pore-filling events. Phys Rev E 2020; 102:023110. [PMID: 32942482 DOI: 10.1103/physreve.102.023110] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 07/21/2020] [Indexed: 11/07/2022]
Abstract
We use fast synchrotron x-ray microtomography to investigate the pore-scale dynamics of water injection in an oil-wet carbonate reservoir rock at subsurface conditions. We measure, in situ, the geometric contact angles to confirm the oil-wet nature of the rock and define the displacement contact angles using an energy-balance-based approach. We observe that the displacement of oil by water is a drainagelike process, where water advances as a connected front displacing oil in the center of the pores, confining the oil to wetting layers. The displacement is an invasion percolation process, where throats, the restrictions between pores, fill in order of size, with the largest available throats filled first. In our heterogeneous carbonate rock, the displacement is predominantly size controlled; wettability has a smaller effect, due to the wide range of pore and throat sizes, as well as largely oil-wet surfaces. Wettability only has an impact early in the displacement, where the less oil-wet pores fill by water first. We observe drainage associated pore-filling dynamics including Haines jumps and snap-off events. Haines jumps occur on single- and/or multiple-pore levels accompanied by the rearrangement of water in the pore space to allow the rapid filling. Snap-off events are observed both locally and distally and the capillary pressure of the trapped water ganglia is shown to reach a new capillary equilibrium state. We measure the curvature of the oil-water interface. We find that the total curvature, the sum of the curvatures in orthogonal directions, is negative, giving a negative capillary pressure, consistent with oil-wet conditions, where displacement occurs as the water pressure exceeds that of the oil. However, the product of the principal curvatures, the Gaussian curvature, is generally negative, meaning that water bulges into oil in one direction, while oil bulges into water in the other. A negative Gaussian curvature provides a topological quantification of the good connectivity of the phases throughout the displacement.
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Affiliation(s)
- Abdulla Alhosani
- Department of Earth Science and Engineering, Imperial College London, London SW7 2BP, United Kingdom
| | - Alessio Scanziani
- Department of Earth Science and Engineering, Imperial College London, London SW7 2BP, United Kingdom
| | - Qingyang Lin
- Department of Earth Science and Engineering, Imperial College London, London SW7 2BP, United Kingdom
| | - Sajjad Foroughi
- Department of Earth Science and Engineering, Imperial College London, London SW7 2BP, United Kingdom
| | - Amer M Alhammadi
- Department of Earth Science and Engineering, Imperial College London, London SW7 2BP, United Kingdom
| | - Martin J Blunt
- Department of Earth Science and Engineering, Imperial College London, London SW7 2BP, United Kingdom
| | - Branko Bijeljic
- Department of Earth Science and Engineering, Imperial College London, London SW7 2BP, United Kingdom
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Bujak T, Nizioł-Łukaszewska Z, Ziemlewska A. Amphiphilic cationic polymers as effective substances improving the safety of use of body wash gels. Int J Biol Macromol 2019; 147:973-979. [PMID: 31678103 DOI: 10.1016/j.ijbiomac.2019.10.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/25/2019] [Accepted: 10/06/2019] [Indexed: 10/25/2022]
Abstract
Cationic surfactants have a wide range of applications in the cosmetic industry. The present study is an attempt to determine the effect of an amphiphilic cationic polymer - a cationic derivative of guar gum - on the safety of use of body wash cosmetics. Model body wash gels based on an anionic surfactant, containing 0.05, 0.25 and 0.5% of the studied compound, were subjected to analyses in order to evaluate their skin irritation effect and the ability to solubilize model sebum. Cell culture studies were also carried out. In addition, the effect of the cationized guar gum derivative on the key quality parameters of body wash cosmetics (viscosity and foaming properties) was assessed. The analyses showed that the addition of the cationic guar gum derivative induced a significant increase in the safety of use of the model body wash gels without causing any impairment of the functional properties of the product.
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Affiliation(s)
- Tomasz Bujak
- Department of Technology of Cosmetic and Pharmaceutical Products, University of Information Technology and Management in Rzeszow, Kielnarowa 386a, 36-020 Tyczyn, Poland.
| | - Zofia Nizioł-Łukaszewska
- Department of Technology of Cosmetic and Pharmaceutical Products, University of Information Technology and Management in Rzeszow, Kielnarowa 386a, 36-020 Tyczyn, Poland.
| | - Aleksandra Ziemlewska
- Department of Technology of Cosmetic and Pharmaceutical Products, University of Information Technology and Management in Rzeszow, Kielnarowa 386a, 36-020 Tyczyn, Poland.
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Gong Y, Chen J, Pu R. The enhanced removal and phytodegradation of sodium dodecyl sulfate (SDS) in wastewater using controllable water hyacinth. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:1080-1089. [PMID: 31044608 DOI: 10.1080/15226514.2019.1606779] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Surfactant is an emerging and popular pollutant in both rural and urban areas and its treatment efficacy by phytoremediation is rarely reported. Water hyacinth was utilized to clean anionic surfactant sodium dodecyl sulfate (SDS) in water and its growth and physiological activities were regulated with Chromolaena odorata L. extract. SDS was effectively removed from the water and then transferred to both root and aerial part of water hyacinth. Part of SDS was converted into low-molecular weight degradation intermediates by the hydrogen abstraction reactions in water hyacinth. The removal efficiency and the degradation of SDS were evidently strengthened accompanying with enhanced root activity and ascorbate peroxidase (APX) activity in the presence of Chromolaena odorata L. extract. Meanwhile, the growth of water hyacinth was effectively controlled, exhibiting low-growth rate (≤0.036 g.day-1). Furthermore, the root was considered as the major organ to degrade SDS, which was correlated to the remarkable increase in APX activity and a slight increase in root activity under both SDS and extract stress. In conclusion, water hyacinth managed with Chromolaena odorata L. extract should be proposed as an eco-friendly biotechnical treatment for the surfactant.
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Affiliation(s)
- Ying Gong
- College of Chemistry and Chemical Engineering, Yunnan Normal University , China
| | - Jiping Chen
- College of Chemistry and Chemical Engineering, Yunnan Normal University , China
| | - Rongping Pu
- College of Chemistry and Chemical Engineering, Yunnan Normal University , China
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Wettability in complex porous materials, the mixed-wet state, and its relationship to surface roughness. Proc Natl Acad Sci U S A 2018; 115:8901-8906. [PMID: 30120127 PMCID: PMC6130345 DOI: 10.1073/pnas.1803734115] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A quantitative in situ characterization of the impact of surface roughness on wettability in porous media is currently lacking. We use reservoir condition micrometer-resolution X-ray tomography combined with automated methods for the measurement of contact angle, interfacial curvature, and surface roughness to examine fluid/fluid and fluid/solid interfaces inside a porous material. We study oil and water in the pore space of limestone from a giant producing oilfield, acquiring millions of measurements of curvature and contact angle on three millimeter-sized samples. We identify a distinct wetting state with a broad distribution of contact angle at the submillimeter scale with a mix of water-wet and water-repellent regions. Importantly, this state allows both fluid phases to flow simultaneously over a wide range of saturation. We establish that, in media that are largely water wet, the interfacial curvature does not depend on solid surface roughness, quantified as the local deviation from a plane. However, where there has been a significant wettability alteration, rougher surfaces are associated with lower contact angles and higher interfacial curvature. The variation of both contact angle and interfacial curvature increases with the local degree of roughness. We hypothesize that this mixed wettability may also be seen in biological systems to facilitate the simultaneous flow of water and gases; furthermore, wettability-altering agents could be used in both geological systems and material science to design a mixed-wetting state with optimal process performance.
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Seweryn A. Interactions between surfactants and the skin - Theory and practice. Adv Colloid Interface Sci 2018; 256:242-255. [PMID: 29685575 DOI: 10.1016/j.cis.2018.04.002] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 04/03/2018] [Accepted: 04/04/2018] [Indexed: 01/14/2023]
Abstract
One of the primary causes of skin irritation is the use of body wash cosmetics and household chemicals, since they are in direct contact with the skin, and they are widely available and frequently used. The main ingredients of products of this type are surfactants, which may have diverse effects on the skin. The skin irritation potential of surfactants is determined by their chemical and physical properties resulting from their structure, and specific interactions with the skin. Surfactants are capable of interacting both with proteins and lipids in the stratum corneum. By penetrating through this layer, surfactants are also able to affect living cells in deeper regions of the skin. Further skin penetration may result in damage to cell membranes and structural components of keratinocytes, releasing proinflammatory mediators. By causing irreversible changes in cell structure, surfactants can often lead to their death. The paper presents a critical review of literature on the effects of surfactants on the skin. Aspects discussed in the paper include the skin irritation potential of surfactants, mechanisms underlying interactions between compounds of this type and the skin which have been proposed over the years, and verified methods of reducing the skin irritation potential of surfactant compounds. Basic research conducted in this field over many years translate into practical applications of surfactants in the cosmetic and household chemical industries. This aspect is also emphasized in the present study.
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