20 results on '"Niharika Rawat"'
Search Results
2. Bio-Performance of Hydrothermally and Plasma-Treated Titanium: The New Generation of Vascular Stents
- Author
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Metka Benčina, Niharika Rawat, Katja Lakota, Snežna Sodin-Šemrl, Aleš Iglič, and Ita Junkar
- Subjects
cardiovascular disease ,metallic stents ,hydrothermal treatment ,non-thermal plasma treatment ,TiO2 ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
The research presented herein follows an urgent global need for the development of novel surface engineering techniques that would allow the fabrication of next-generation cardiovascular stents, which would drastically reduce cardiovascular diseases (CVD). The combination of hydrothermal treatment (HT) and treatment with highly reactive oxygen plasma (P) allowed for the formation of an oxygen-rich nanostructured surface. The morphology, surface roughness, chemical composition and wettability of the newly prepared oxide layer on the Ti substrate were characterized by scanning electron microscopy (SEM) with energy-dispersive X-ray analysis (EDX), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and water contact angle (WCA) analysis. The alteration of surface characteristics influenced the material’s bio-performance; platelet aggregation and activation was reduced on surfaces treated by hydrothermal treatment, as well as after plasma treatment. Moreover, it was shown that surfaces treated by both treatment procedures (HT and P) promoted the adhesion and proliferation of vascular endothelial cells, while at the same time inhibiting the adhesion and proliferation of vascular smooth muscle cells. The combination of both techniques presents a novel approach for the fabrication of vascular implants, with superior characteristics.
- Published
- 2021
- Full Text
- View/download PDF
3. Mechanical and Electrical Interaction of Biological Membranes with Nanoparticles and Nanostructured Surfaces
- Author
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Jeel Raval, Ekaterina Gongadze, Metka Benčina, Ita Junkar, Niharika Rawat, Luka Mesarec, Veronika Kralj-Iglič, Wojciech Góźdź, and Aleš Iglič
- Subjects
lipid bilayer electrostatics ,zwitterionic lipid bilayers ,electric double layer ,osmotic pressure ,orientational degree of freedom of lipid headgroups ,orientational ordering of water dipoles ,Chemical technology ,TP1-1185 ,Chemical engineering ,TP155-156 - Abstract
In this review paper, we theoretically explain the origin of electrostatic interactions between lipid bilayers and charged solid surfaces using a statistical mechanics approach, where the orientational degree of freedom of lipid head groups and the orientational ordering of the water dipoles are considered. Within the modified Langevin Poisson–Boltzmann model of an electric double layer, we derived an analytical expression for the osmotic pressure between the planar zwitterionic lipid bilayer and charged solid planar surface. We also show that the electrostatic interaction between the zwitterionic lipid head groups of the proximal leaflet and the negatively charged solid surface is accompanied with a more perpendicular average orientation of the lipid head-groups. We further highlight the important role of the surfaces’ nanostructured topography in their interactions with biological material. As an example of nanostructured surfaces, we describe the synthesis of TiO2 nanotubular and octahedral surfaces by using the electrochemical anodization method and hydrothermal method, respectively. The physical and chemical properties of these nanostructured surfaces are described in order to elucidate the influence of the surface topography and other physical properties on the behavior of human cells adhered to TiO2 nanostructured surfaces. In the last part of the paper, we theoretically explain the interplay of elastic and adhesive contributions to the adsorption of lipid vesicles on the solid surfaces. We show the numerically predicted shapes of adhered lipid vesicles corresponding to the minimum of the membrane free energy to describe the influence of the vesicle size, bending modulus, and adhesion strength on the adhesion of lipid vesicles on solid charged surfaces.
- Published
- 2021
- Full Text
- View/download PDF
4. Strategies for Improving Antimicrobial Properties of Stainless Steel
- Author
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Matic Resnik, Metka Benčina, Eva Levičnik, Niharika Rawat, Aleš Iglič, and Ita Junkar
- Subjects
antibacterial ,stainless steel ,surface modification ,biocompatibility ,plasma ,Technology ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Microscopy ,QH201-278.5 ,Descriptive and experimental mechanics ,QC120-168.85 - Abstract
In this review, strategies for improving the antimicrobial properties of stainless steel (SS) are presented. The main focus given is to present current strategies for surface modification of SS, which alter surface characteristics in terms of surface chemistry, topography and wettability/surface charge, without influencing the bulk attributes of the material. As SS exhibits excellent mechanical properties and satisfactory biocompatibility, it is one of the most frequently used materials in medical applications. It is widely used as a material for fabricating orthopedic prosthesis, cardiovascular stents/valves and recently also for three dimensional (3D) printing of custom made implants. Despite its good mechanical properties, SS lacks desired biofunctionality, which makes it prone to bacterial adhesion and biofilm formation. Due to increased resistance of bacteria to antibiotics, it is imperative to achieve antibacterial properties of implants. Thus, many different approaches were proposed and are discussed herein. Emphasis is given on novel approaches based on treatment with highly reactive plasma, which may alter SS topography, chemistry and wettability under appropriate treatment conditions. This review aims to present and critically discuss different approaches and propose novel possibilities for surface modification of SS by using highly reactive gaseous plasma in order to obtain a desired biological response.
- Published
- 2020
- Full Text
- View/download PDF
5. Histopathological spectrum of uterine lesions in hysterectomy specimens
- Author
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Niharika Rawat, Aditya Tignath, Ankit Jain, Swati Soni, and Megha Agrawal
- Subjects
General Nursing ,Education - Abstract
Introduction: The most common complaint of women visiting hospital in the gynaecological outpatient department is abnormal uterine bleeding. Our aim is to do a retrospective study and analyze the histopathological specimen of patients undergoing hysterectomy with complaint of vaginal bleeding. Material and Methods: All hysterectomy specimens fixed in 10% formalin received in the department of pathology were examined and studied for histopathological diagnosis. Specimens were grossed, paraffin embedded tissue sections were prepared and stained with hematoxylin and eosin for microscopic examination. Results: A total of 55 hysterectomies specimen were received in the Department of pathology in a study period of 1 year. Out of 55 patients 2 patients underwent unilateral salpingo-oopherctomy and 12 patients underwent bilateral salpingo-oopherectomy. Most common findings after histopathological study were chronic cervicitis in 48(87.3%) followed by leiomyoma in 20(36.4%), adenomyosis in 12 (21.8%) and endometrial hyperplasia in 2 (3.6%) women. Cervical malignancies were observed in 2 cases. Patients undergoing salpingo-oopherectomy showed cystic changes in 7 ovaries with corpus luteal cyst in 3 cases and 3 follicular cyst in cases. Fallopian tube were pathologically unremarkable in most cases with paratubal cyst in 1 case. Ovarian neoplasm were reported in 1 patient.
- Published
- 2022
6. Fabrication of antibacterial TiO$_2$ nanostructured surfaces using the hydrothermal method
- Author
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Niharika Rawat, Metka Benčina, Ekaterina Gongadze, Ita Junkar, and Aleš Iglič
- Subjects
X-ray photoelectron spectroscopy ,titan ,nanostructure ,General Chemical Engineering ,microstructure ,implants ,mikrostruktura ,General Chemistry ,cell response ,celični odziv ,površinske modifikacije ,biocompatibility ,udc:620.1/.2 ,oxides ,surface morphology ,titanium ,bacteria ,surface modification ,nanostruktura ,biokompatibilnost - Abstract
Implant-associated infections (IAI) are a common cause for implant failure, increased medical costs, and critical for patient healthcare. Infections are a result of bacterial colonization, which leads to biofilm formation on the implant surface. Nanostructured surfaces have been shown to have the potential to inhibit bacterial adhesion mainly due to antibacterial efficacy of their unique surface nanotopography. The change in topography affects the physicochemical properties of their surface such as surface chemistry, morphology, wettability, surface charge, and even electric field which influences the biological response. In this study, a conventional and cost-effective hydrothermal method was used to fabricate nanoscale protrusions of various dimensions on the surface of Ti, Ti$_6$Al$_4$V, and NiTi materials, commonly used in biomedical applications. The morphology, surface chemistry, and wettability were analyzed using scanning electron microscopy (SEM), X-ray photoemission spectroscopy (XPS), and water contact angle analysis. The antibacterial efficacy of the synthesized nanostructures was analyzed by the use of Escherichia coli bacterial strain. XPS analysis revealed that the concentration of oxygen and titanium increased on Ti and Ti$_6$Al$_4$V, which indicates that TiO$_2$ is formed on the surface. The concentration of oxygen and titanium however decreased on the NiTi surface after hydrothermal treatment, and also a small amount of Ni was detected. SEM analysis showed that by hydrothermal treatment alterations in the surface topography of the TiO$_2$ layer could be achieved. The oxide layer on the NiTi prepared by the hydrothermal method contains a low amount of Ni (2.8 atom %), which is especially important for implantable materials. The results revealed that nanostructured surfaces significantly reduced bacterial adhesion on the Ti, Ti$_6$Al$_4$V, and NiTi surface compared to the untreated surfaces used as a control. Furthermore, two sterilization techniques were also studied to evaluate the stability of the nanostructure and its influence on the antibacterial activity. Sterilization with UV light seems to more efficiently inhibit bacterial growth on the hydrothermally modified Ti$_6$Al$_4$V surface, which was further reduced for hydrothermally treated Ti and NiTi. The developed nanostructured surfaces of Ti and its alloys can pave a way for the fabrication of antibacterial surfaces that reduce the likelihood of IAI.
- Published
- 2023
7. Interaction of cells with different types of TiO2 nanostructured surfaces
- Author
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Niharika Rawat, Ita Junkar, Aleš Iglič, Veronika Kralj-Iglič, Mukta Kulkarni-Sambhare, Ekaterina Gongadze, and Metka Benčina
- Published
- 2023
8. Synthesis of TiO2 nanostructures and their medical applications
- Author
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Ita Junkar, Metka Benčina, Niharika Rawat, Rene Mihelič, Rihard Trebše, and Aleš Iglič
- Published
- 2023
9. List of contributors
- Author
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Vishnuram Abhinav, Maguy Abi Jaoude, Reetika Arora, Deepika Bansal, Vinod Belwanshi, Metka Benčina, Priya Bhardwaj, Dhruv Bhatnagar, Ankita Bhatt, Shivangi Chamoli, Ajay Kumar Chhantyal, null Deepika, Madhusmita Dhupal, Sanjeev Gautam, Varsha Gautam, Shiv Kumar Giri, Navdeep Goyal, Riya Gupta, Lalit Kumar Gupta, Md Imran Hossain, Ajmal Hussain, Aleš Iglič, Shubham Jain, Jayant K. Jogi, Ita Junkar, Ganeshlenin Kandasamy, Akshay Kumar, Anil Kumar, Nitesh Kumar, Vibhor Kumar, Varun Kumar, Piyush Kumar, Mamta Latwal, Archana Mahapatra, Pawan Kumar Maurya, Akansha Mehra, Rene Mihelič, Pawan Mishra, Tapas Kumar Mohapatra, Maruthi Mulaka, Ruchi Mutreja, Sitansu Sekhar Nanda, Ashish Nasa, Naveen Kumar Navani, Reena Rani Nayak, Vennila Preethi, Vu Thi Quyen, Deji R., Prem Ranjan, Pankaj Singh Rawat, Niharika Rawat, Shelishiya Raymond, Sanjay Kumar Sahu, Rajni Sharma, Ramesh K. Sharma, Chitven Sharma, Priya Shrivastava, Jitendra Pal Singh, Madan Singh, Gulab Singh, Sanjay K. Singhal, Ramesh C. Srivastava, Qui Thanh Hoai Ta, Ashish Tanna, Deepika Thakur, Deepa Beeta Thiyam, Rihard Trebše, Koushi Kumar U., Priyanka Verma, Jaime Viegas, Somu Yadav, and Dong Kee Yi
- Published
- 2023
10. Fabrication of Antibacterial TiO
- Author
-
Niharika, Rawat, Metka, Benčina, Ekaterina, Gongadze, Ita, Junkar, and Aleš, Iglič
- Abstract
Implant-associated infections (IAI) are a common cause for implant failure, increased medical costs, and critical for patient healthcare. Infections are a result of bacterial colonization, which leads to biofilm formation on the implant surface. Nanostructured surfaces have been shown to have the potential to inhibit bacterial adhesion mainly due to antibacterial efficacy of their unique surface nanotopography. The change in topography affects the physicochemical properties of their surface such as surface chemistry, morphology, wettability, surface charge, and even electric field which influences the biological response. In this study, a conventional and cost-effective hydrothermal method was used to fabricate nanoscale protrusions of various dimensions on the surface of Ti, Ti
- Published
- 2022
11. Measuring Writing
- Author
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null Dr. Niharika Rawat
- Abstract
To understand both writing processes and writing interventions, as well as writing interventions themselves, it is sometimes necessary to assess text quality. However, the idea of 'text quality' is commonly misunderstood or misunderstood. A more precise understanding and explanation of what it means to be a good writer is the purpose of this book, according to the editors. Chapters in the book are broken down into the following categories: definitions of writing skill, rater effects, and automated essay scoring, to name a few.
- Published
- 2021
12. Mechanical properties of anodic titanium dioxide nanostructures
- Author
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Matej Daniel, Chandrashekhar V. Rode, Mukta Kulkarni, Josef Sepitka, Metka Benčina, Patrik Schmuki, Aleš Iglič, Suresh Gokhale, Niharika Rawat, Ita Junkar, and Anca Mazare
- Subjects
Nanostructure ,Materials science ,Polymers and Plastics ,Scanning electron microscope ,Metals and Alloys ,symbols.namesake ,chemistry.chemical_compound ,chemistry ,Titanium dioxide ,Vickers hardness test ,symbols ,Composite material ,Raman spectroscopy ,Spectroscopy ,Elastic modulus ,FOIL method - Abstract
Highly ordered and uniform titanium dioxide (TiO2) nanotubes (NTs) with different morphologies (15 nm, 50 nm and 100 nm in diameter) were prepared by the electrochemical anodization of Ti substrates. The TiO2 NTs’ surface properties were characterized by X-ray diffraction (XRD) spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM) and atomic force microscopy (AFM). The elastic modulus (E) and the Vickers hardness (HV) of the Ti foil and of the different-morphology TiO2 NTs were evaluated with the nano-indentation technique. E and HV increase with the decreasing length/diameter of the NTs, meaning that NTs with smaller diameters are more resistant to mechanical wear. The elastic modulus of the TiO2 NTs with 15-nm and 50-nm diameters is similar to that of the human bone.
- Published
- 2021
13. Studying Academic Writing Skills among Doctoral Research Scholars
- Author
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null Dr. Niharika Rawat
- Abstract
This study looked at students' thoughts on writing and how they regarded themselves as writers. The Writing Process Questionnaire was used to gather students' views on academic writing. The connection between PhD students' mental health and their writing ideas was also of interest. A survey of 669 PhD students from a big Finnish institution was used in the research. Scales for assessing blockages, procrastination, perfectionism, intrinsic talent, knowledge transformation, and productivity were created using 26 questions. The six-dimensional construct was confirmed using CFA. It was revealed that emotional weariness was associated to a greater risk of procrastination as well as a decreased rate of output. LISREL research verified the six-factor structure of the writing scale. For the study of academic writing and its emotional components, the questionnaire appears to be a useful and reliable tool.
- Published
- 2020
14. Immunohistochemical expression of p16INK4A in the lesions of uterine cervix
- Author
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Niharika Rawat and Shivapriya Rajan
- Subjects
Cervical cancer ,Intraepithelial neoplasia ,medicine.medical_specialty ,business.industry ,Cervicitis ,Cancer ,medicine.disease ,Gastroenterology ,Low Grade Squamous Intraepithelial Neoplasia ,Dysplasia ,Internal medicine ,medicine ,General Earth and Planetary Sciences ,business ,Prospective cohort study ,Grading (tumors) ,General Environmental Science - Abstract
Background: Cervical cancer is the major cause of cancer deaths among women. Globally, around 5,70,000 new cases of cervical cancer and 3,11,000 deaths occurred in the year 2018. In India, Cervical cancer is a leading cause of cancer related mortality among women and the number of deaths is 60,000 per year among 97,000 diagnosed patients, especially those from lower socioeconomic group. Human Papilloma Virus (HPV) plays a crucial role in causing cervical dysplasia. This is done by upregulating p16INK4A, a cyclin dependent kinase inhibitor through interaction with cellular regulatory proteins. Hence p16INK4A can be used as a biomarker, since it is directly related variable for the presence of HPV. This study was conducted to evaluate the expression of p16INK4A in benign, premalignant and malignant cervical lesions and to assess its utility in diagnosing and grading cervical lesions. Methods: A total of 80 cervical specimens categorized histopathologically into nonspecific cervicitis, low grade squamous intraepithelial neoplasia (LSIL), high grade squamous intraepithelial neoplasia (HSIL) and squamous cell carcinoma cervix were included in this prospective study of one-year duration. Immunohistochemical study of p16INK4A were interpreted qualitatively and semi-quantitatively by Allred scoring system (0 to 8 points) which measures the proportion of stained cells and intensity of staining of cells. The collected data were statistically analyzed by ANOVA and chi square test. Result: Qualitative method showed absence of p16INK4A expression in all nonspecific cervicitis. 16.7% (2/12) LSIL, 100% (12/12) HSIL and 100% (28/28) squamous cell carcinoma cases showed p16INK4A positivity. Allred scoring of p16INK4A showed 66% (8/12) HSIL and 85.7% (24/28) squamous cell carcinoma cases with score 3 positivity. Hence high-grade lesions showed higher expression of this marker. Conclusion: IHC expression of p16INK4A showed increasing degree of expression from benign to premalignant and malignant lesions suggesting its diagnostic and prognostic value in the cervical cancer management
- Published
- 2020
15. Prevalence of metabolic syndrome among psoriasis and lichen planus patients attending tertiary care hospital in Bundelkhand region: A prospective study
- Author
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Dwijendra Nath, Neeraj Srivastava, Mayank Singh, Niharika Rawat, and Chhaya Rani Chevra
- Subjects
medicine.medical_specialty ,integumentary system ,business.industry ,Disease ,010501 environmental sciences ,medicine.disease ,01 natural sciences ,Dermatology ,Obesity ,stomatognathic diseases ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,Insulin resistance ,stomatognathic system ,Psoriasis ,Medicine ,Metabolic syndrome ,Prospective cohort study ,business ,Acne ,Dyslipidemia ,0105 earth and related environmental sciences - Abstract
Background: Metabolic syndrome is constellation of many different disorders. The common conditions associated with metabolic syndrome are obesity, hypertension, dyslipidemia and insulin resistance. These conditions do play some role in developing cardiovascular disease beyond traditional risk. Metabolic syndrome have been commonly seen in patients of many skin diseases including psoriasis, lichen planus, acne inversa and even in skin malignancies. In chroni skin disorder and even in metabolic syndrome chronic inflammation has been shown to play some role in the pathogenesis of disease. The present study is designed with a view to know any association between skin diseases especially psoriasis and metabolic syndrome, as well as expression of C-reactive protein in psoriasis and other skin diseases in this region. Materials and Methods: Present study was conducted on 76 histopathologically confirmed cases of Psoariasis & Lichen Planus and 70 age and sex matched controls with skin lesions other than psoriasis and lichen planus. For metabolic syndrome criteria proposed by National cholesterol education programme (NCEP) ATP III was used. Triglycerides, HDL cholesterol, Blood sugar and CRP level was quantitatively determined on serum/plasma of patients. Chi square test and SPSS 19.0 software was used for statistical analysis. Results: Among psoriasis patients 18/52 had metabolic syndrome while this figure was low in lichen planus patients 7/24. The incidence of metabolic syndrome with skin disease was high as compared to control population and it was also statistically significant. Cases (psoriasis and lichen planus) with metabolic syndrome had high CRP value 61.1% (11/18) and 57.1% (04/07) respectively as compared to control 12.8% (09/71) and also displayed significant association. Conclusion: It was concluded from this study that metabolic syndrome is an important co-morbidity with psoriasis and lichen planus which requires screening to avoid complications in later life.
- Published
- 2020
16. Toward novel antibacterial surfaces used for medical implants
- Author
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Metka Benčina, Ita Junkar, Niharika Rawat, and Aleš Iglič
- Published
- 2022
17. Strategies for Improving Antimicrobial Properties of Stainless Steel
- Author
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Eva Levičnik, Ita Junkar, Aleš Iglič, Niharika Rawat, Metka Benčina, and Matic Resnik
- Subjects
Materials science ,Biocompatibility ,plazma ,Nanotechnology ,02 engineering and technology ,Review ,010402 general chemistry ,lcsh:Technology ,01 natural sciences ,biocompatibility ,Reactive plasma ,sprememba površine ,General Materials Science ,Surface charge ,lcsh:Microscopy ,stainless steel ,plasma ,lcsh:QC120-168.85 ,antibakterijsko ,lcsh:QH201-278.5 ,lcsh:T ,Adhesion ,021001 nanoscience & nanotechnology ,Antimicrobial ,0104 chemical sciences ,nerjaveče jeklo ,antibacterial ,lcsh:TA1-2040 ,Surface modification ,lcsh:Descriptive and experimental mechanics ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,Wetting ,lcsh:Engineering (General). Civil engineering (General) ,0210 nano-technology ,lcsh:TK1-9971 ,surface modification ,udc:620.1/.2:533 ,biokompatibilnost - Abstract
In this review, strategies for improving the antimicrobial properties of stainless steel (SS) are presented. The main focus given is to present current strategies for surface modification of SS, which alter surface characteristics in terms of surface chemistry, topography and wettability/surface charge, without influencing the bulk attributes of the material. As SS exhibits excellent mechanical properties and satisfactory biocompatibility, it is one of the most frequently used materials in medical applications. It is widely used as a material for fabricating orthopedic prosthesis, cardiovascular stents/valves and recently also for three dimensional (3D) printing of custom made implants. Despite its good mechanical properties, SS lacks desired biofunctionality, which makes it prone to bacterial adhesion and biofilm formation. Due to increased resistance of bacteria to antibiotics, it is imperative to achieve antibacterial properties of implants. Thus, many different approaches were proposed and are discussed herein. Emphasis is given on novel approaches based on treatment with highly reactive plasma, which may alter SS topography, chemistry and wettability under appropriate treatment conditions. This review aims to present and critically discuss different approaches and propose novel possibilities for surface modification of SS by using highly reactive gaseous plasma in order to obtain a desired biological response.
- Published
- 2020
18. Mechanical and Electrical Interaction of Biological Membranes with Nanoparticles and Nanostructured Surfaces
- Author
-
Ekaterina Gongadze, Jeel Raval, Metka Benčina, Luka Mesarec, Aleš Iglič, Veronika Kralj-Iglič, Ita Junkar, Wojciech T. Góźdź, and Niharika Rawat
- Subjects
Materials science ,lipid bilayer elasticity ,adhesion of lipid vesicles ,osmotski tlak ,Nanoparticle ,Filtration and Separation ,Review ,TP1-1185 ,02 engineering and technology ,lipid vesicle shapes ,010402 general chemistry ,oblike lipidnh veziklov ,01 natural sciences ,zwitterionski lipidni dvosloj ,adhezija lipidnih veziklov ,Chemical engineering ,Adsorption ,udc:577 ,Chemical Engineering (miscellaneous) ,Lipid bilayer ,električni dvojni sloj ,elastičnost lipidnih dvoslojev ,Chemical technology ,Process Chemistry and Technology ,Vesicle ,lipid bilayer electrostatics ,electric double layer ,orientirano urejanje vodnih dipolov ,Biological membrane ,orientational ordering of water dipoles ,Adhesion ,021001 nanoscience & nanotechnology ,Electrostatics ,svobodna orientacijska stopnja lipidnih skupin ,zwitterionic lipid bilayers ,0104 chemical sciences ,Membrane ,Chemical physics ,osmotic pressure ,orientational degree of freedom of lipid headgroups ,TP155-156 ,elektrostatski lipidni dvosloj ,0210 nano-technology - Abstract
In this review paper, we theoretically explain the origin of electrostatic interactions between lipid bilayers and charged solid surfaces using a statistical mechanics approach, where the orientational degree of freedom of lipid head groups and the orientational ordering of the water dipoles are considered. Within the modified Langevin Poisson–Boltzmann model of an electric double layer, we derived an analytical expression for the osmotic pressure between the planar zwitterionic lipid bilayer and charged solid planar surface. We also show that the electrostatic interaction between the zwitterionic lipid head groups of the proximal leaflet and the negatively charged solid surface is accompanied with a more perpendicular average orientation of the lipid head-groups. We further highlight the important role of the surfaces’ nanostructured topography in their interactions with biological material. As an example of nanostructured surfaces, we describe the synthesis of TiO2 nanotubular and octahedral surfaces by using the electrochemical anodization method and hydrothermal method, respectively. The physical and chemical properties of these nanostructured surfaces are described in order to elucidate the influence of the surface topography and other physical properties on the behavior of human cells adhered to TiO2 nanostructured surfaces. In the last part of the paper, we theoretically explain the interplay of elastic and adhesive contributions to the adsorption of lipid vesicles on the solid surfaces. We show the numerically predicted shapes of adhered lipid vesicles corresponding to the minimum of the membrane free energy to describe the influence of the vesicle size, bending modulus, and adhesion strength on the adhesion of lipid vesicles on solid charged surfaces.
- Published
- 2021
19. Formulation of Fenugreek Seed Incorporated Food Products for Therapeutic Benefit in the Management of Diabetes
- Author
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Sarita Srivastava, Niharika Rawat, and Vandana
- Subjects
business.industry ,Fenugreek seed ,Food products ,Diabetes mellitus ,Medicine ,business ,medicine.disease ,Biotechnology - Published
- 2016
20. EXPRESSION OF SURVIVIN AND p53 IN BREAST CANCER
- Author
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Dwijendra, Nath, primary, Pallavi, Agrawal, additional, Arun, Singh, additional, and Niharika, Rawat, additional
- Published
- 2018
- Full Text
- View/download PDF
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