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Articles
by
Kudrat-e-zahan |
Total Records (
3 ) for
Kudrat-e-zahan |
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M. Shamim Hossain
,
M. Aslam Hossain
,
R. Islam
,
A. H. M. Khurshid Alam
,
Kudrat-e-Zahan
,
S. Sarkar
and
M. Akhter Farooque
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Owing to the biological importance of metalloelements in many biological
processes, especially metabolic processes, magnesium(II) complexes were synthesized
and examined for their antimicrobial and cytotoxic activities. Among the two
synthesized organometalic complexes [Mg(2-ap)2, A] and [Mg(2-ab)2,
C], the maximum antibacterial and antifungal activities were shown by the compound
A. Among the ligands, 2-aminophenol (B) showed more antibacterial activity than
2-aminobenzoic acid (D). The minimum inhibitory concentration for the complex
A against five pathogenic bacteria Streptococcus-haemolyticus,
Bacillus subtilis, Staphylococcus aureus, Salmonella typhi and Escherichia
coli were found in the range of 32-64 μg ml-1. The complexes
were also tested for their cytotoxicity using brine shrimp lethality bioassay
method and the LC50 values of the complexes A and C were found to
be 5.7 and 24.3 µg ml-1 respectively. Antibacterial, antifungal and
cytotoxic studies undertaken for the above compounds indicated structure-activity
relationships. These metalloderivatives were more active than the parent compounds
(ligands). |
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M. Ashraful Alam
,
Kudrat-e-zahan
,
M. Shamim Hossain
and
Fahmida Zerin Seema
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Three new cobalt μ-peroxo complexes [Co(2-apy)(O2)(OX),
C1], [Co(2-apy)(O2)(2-ap), C2] and [Co(2-apy)(O2)(2-ab),
C3] and two new zirconium μ-peroxo complexes [Zr(2-na)(O2)(OX),
C5] and [Zr(2-ap)(O2)(OX), C5] were tested
for their antibacterial activity by disc diffusion and serial dilution methods.
All the coordination complexes were active against various test pathogenic organisms.
The minimum inhibitory concentration (MIC) of the complexes was estimated between
32-64 μg ml-1 against Bacillus subtilis and Escharicha
coli. The cytotoxicity of the five newly synthesized complexes was screened
using brine shrimp lethality bioassay method and the LC50 values
were calculated using probit analysis. LC50 values of the complexes
C1-C5 were found 14.15, 9.12, 14.15, 29.51 and 5.75 7μg
ml-1, respectively. |
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M. Shamim Hossain
,
Kudrat-e-zahan
,
M. Anwar-ul-Islam
,
S. Sarkar
,
Jahanara Nassin
,
Aktarul Islam
,
M. Akhter Farooque
and
M. Asraful Alam
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Three coordination complexes of metals with mixed ligands [Mn(ED)(2-ap)2,
A], [Fe(ED)(2-ab)2, B] and [Fe(ED)(2-ap)2, C] were tested
for their antimicrobial activity by disc diffusion and serial dilution methods.
All the complexes were active against various test pathogenic organisms. The
maximum antibacterial and antifungal activities were shown by the manganese
complex A. The minimum inhibitory concentration of the complex A was determined
against four pathogenic bacteria Bacillus subtilis, Streptococcus-β-haemolyticus,Escherichia coli and Salmonella typhi and values were found between 16-32 μg ml-1. The manganese complex A also showed potent cytotoxic effect which is indicative of its probable effect on cancer cell lines. |
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