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24
Metals in Medicine, Volume 2
Plant-based extracts UV visual. SEM/DL/TEM FTIR spectroscopy EDS
Mucuna pruriens 537 nm 6–17.7 nm Amide protein
bands (I and II)
-
Psidium guajava
leaves
505 nm 27 nm, spherical Flavonones Au
 – 200–500 nm, hexagonal
and triangular.
- 

Rosa rugosa leaves 578 nm 50–250 nm Amine and
carboxylic groups




546 nm 10–40 nm, triangular,
spherical
CO binding 

leaves
524 nm 10–35 nm CO binding -
1.4 BIOCOMPATIBILITY AND CYTOTOXICITY OF AuNPs
-
         

  
101





mutagenesis, apoptosis, DNA damage, or oxidative stress. But cytotoxicity
     

in-vivo.
101
  

-
materials, mostly revolving around their physicochemical properties, i.e.,

-
mations in the location they accumulate at.
102
   



103
Further, physicochemical properties
-

104
TABLE 1.4 (Continued)
https://t.me/med1917
Gold-based Nanoparticles and Their Applications in Cancer Therapy
25
FIGURE 1.9     
 

     


Source

         
AuNPs. In-vivo evaluation is more comprehensive and provides detailed
    
   


-

        

In-vivo methodologies: animal models including rats (e.g., Wistar,
    


https://t.me/med1917
26
Metals in Medicine, Volume 2

-
neous, oral, and intravenous),
9


         

TABLE 1.5 In-vivo Studies Used to Evaluate the Nanoparticles Biocompatibility.
101

Type of the
investigation
Methodology objective and application

behavioral analysis


Biodistribution 

Clearance and
biodegradation


Hematology,
pharmacokinetic,
and serum chemistry


Immunology tests 


spleen.
Histopathology tests 

structural changes occurring in biological tissues.
Repeated and acute
dose toxicity

exposures in short time periods.
Developmental and
reproductive toxicity



Mutagenicity and
Genotoxicity

assesses the permanent transmissible changes in the structure and

  
nanomaterials are evaluated preliminarily in in-vitro conditions. Despite that
-

   
   
https://t.me/med1917
Gold-based Nanoparticles and Their Applications in Cancer Therapy
27
 
       



101,105,106




TABLE 1.6 
Type of the
investigation
Methodology objective and application
Metabolic activity
assays

metabolic activities
Cell viability and




Oxidative stress tests 

Apoptosis 
response to extracellular signals.
Necrosis 
membrane.
Genotoxicity tests 

Immunotoxicity tests 


Source

          
 
           
AuNPs as vehicles in cancer therapy and other medicinal applications
    -

      


https://t.me/med1917
28
Metals in Medicine, Volume 2





        

systems.
107
        -
         

       



      -
tion), clinical (human trials), and post-marketing phase.
108


including their properties, biocompatibility, and toxicity. But the clinical trials
are the longest phase and it is divided into three steps: dosing and interaction


109
TABLE 1.7 
Products.
Authority name Procedures, standardization, and regulations
 
Centre 
 
Agency 
chemicals evaluation.
 
 
 complex, and broad matters that require risk assessments to

 
 
 
Authority products, and advocates analytical technologies.
European Medicines Agency 

health and the public in the European Union (EU).
https://t.me/med1917
Gold-based Nanoparticles and Their Applications in Cancer Therapy
29
Authority name Procedures, standardization, and regulations
United States Food and Drug
Administration



Quality Supervision,
Inspection, and Quarantine


National Nanotechnology

Committee (China)







Agency


Source
TABLE 1.8
        

Organization name Guidance documents and standards











E56 on Nanotechnology


Canadian Standards Association
(CSA)

engineered nanomaterials in occupational settings.

Cooperation and Development
(OECD), Working Party on

-





Developing high-throughput toxicity testing protocols
and alternative testing strategies using in-silico and

nanoparticles used in diagnostic applications.
Source
TABLE 1.7
(Continued)
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Metals in Medicine, Volume 2
1.5 CONCLUSION
AuNPs are revolutionary nanosystems in anticancer therapy. While
        

     
AuNPs seem to be very promising due to their production simplicity
(via physical, chemical, and green routes), and unique physicochemical
          



   -

perspectives including the medicinal applications in cancer therapy, the

      
the-art AuNPs.
ACKNOWLEDGMENTS
   


KEYWORDS
• drug delivery
• photodynamic
• photothermal therapies
• radiofrequency therapy
• synthesis
• biocompatibility
• toxicity
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Gold-based Nanoparticles and Their Applications in Cancer Therapy
31
REFERENCES
 
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     Neoplasm
[Internet]

              
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 
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