1.Blood glucose level and other biochemical changes induced in normal mice by oral Traditional Chinese Medicine complex for diabetes (TCM-D™)
Donald Koh Fook Chen ; Joon Wah Mak ; Soo Shen Ooi ; Kok Fee Mak ; Kwai Hoe Chong
International e-Journal of Science, Medicine and Education 2012;6(2):24-31
Background: A number of Traditional Chinese
Medicine (TCM) preparations are being used for the
treatment of diabetes mellitus. Some components
of these preparations have biochemical effects other
than those of lowering blood glucose and indeed have
been used for other medical indications in traditional
practice. The primary objective of the study was to
determine the effect of the oral mixture of Traditional
Chinese Medicine for diabetes (TCM-D™ complex) on
blood glucose level and the biochemical changes if any,
on the liver (ALT, AST, gamma-GT, albumin, globulin)
and renal (blood creatinine, urea) functions in normal
mice. The oral mixture is an aqueous extract of four wellknown traditional Chinese medicinal herbs and consists
of Trichosanthes kirilowii Maxim., Paeonia lactiflora Pall.,Glycyrrhiza uranlensis Fisch., and Panax ginseng (red) CA Meyer in the proportion of 36%, 28%, 18%, and
18% respectively of the dry weight. These herbs have
been shown to have blood glucose lowering activity and
have been used for other traditional medicinal purposes.
The safety of the combination was evaluated in the
present study.
Methods: Experimental Balb/c mice were treated orally
via gastric tube with the extract at daily doses equivalent
to 1 and 10 times the recommended human dose for
8 weeks. Blood glucose and other biochemical profiles
were monitored at pre-treatment and monthly posttreatment
until killed.
Results: When compared to pre-treatment levels, the
blood glucose levels were significantly lower in treated
animals compared to those in the control group. At
the recommended TCM-D™ dose the levels in treated
animals were significantly lower than that of control
animals and at pre-treatment. When compared with
pre-treatment, the glucose levels were lowest at Week
8 of treatment, the mean levels being 111.23%, 83.32%
and 70.33% in control, and in animals given 1 x and
10 x the recommended TCM-D™ dosage respectively.
The blood glucose lowering effect was also associated
with a significant weight loss in treated animals. There
were transient increases in AST and ALT levels but these reverted to normal at Week 8 of treatment.
The levels of bilirubin, g-GT, albumin, creatinine
and blood urea were also not significantly different at
Week 8 from pre-treatment levels in all groups.
Conclusion: Even at 10 times the dosage recommended
for humans, TCM-D™ did not affect the liver and
renal functions of treated animals. Treated and control
animals remained healthy and normal throughout the
period of observation.
2.Effect of Traditional Chinese Medicine Complex for diabetes (TCM-D™) on experimentally induced diabetic mice
Donald Koh Fook Chen ; Joon Wah Mak ; Soo Shen Ooi ; Kok Fee Mak ; ; Kwai Hoe Chong
International e-Journal of Science, Medicine and Education 2013;7(1):4-9
Background: We previously evaluated the biochemical
changes induced by the local product TCM for
diabetes (TCM-D™) on blood glucose levels and other
biochemical changes in normal mice fed orally with the
recommended human dose (30 ml/kg daily) and ten
times this dose for eight weeks. TCM-D™ is an aqueous
extract of the roots of Trichosanthes kirilowii Maxim,
Paeonia lactiflora Pall, Glycyrrhiza uranlensis Fisch. and
Panax ginseng Meyer (red) combined at the dry weight
proportions of 36%, 28%, 18% and 18% respectively.
The study showed that at these dosages the blood
glucose levels as well as the body weights in treated mice
were significantly reduced when compared with pretreatment
values and control animals. The present study
evaluated the effect of the extract in a mouse model of
Type 1 diabetes mellitus.
Methods: TCM-D™ extract was prepared as a 10x
concentrate and given orally at 0.3 ml/100 g and
1.5 ml/100 g to mice which were experimentally
induced diabetic with intraperitoneal injections of
streptozotocin (5 mg/100g) in sodium citrate (pH 4.5).
Control diabetic mice were dosed with extract diluent
(distilled water).
Results: At the doses studied the compound did not
show any significant lowering of the glucose levels in a
mouse model of Type 1 diabetes. There were significant
increases in the alanine aminotransferase (ALT) and
creatinine levels which were most likely due to the
treatment with the compound. There were no significant
changes in the aspartate aminotransferase (AST) and
blood urea levels due to the treatment. Neither was
there any significant effect on the weight of the treated
animals due to the treatment.
Conclusions: It is concluded that TCM-D™ did not
have any significant blood glucose lowering effect on
streptozotocin induced diabetic mice when fed orally at
1-5 times the recommended human dose. Further work
is needed to determine if the extract has any significant
effect in a mouse model with Type 2 diabetes mellitus.
3.A modified mycological medium for isolation and culture of Malassezia furfur.
Kaw Bing Chua ; I L Chua ; I E Chua ; Kwai Hoe Chong ; Kerk Hsiang Chua
The Malaysian journal of pathology 2005;27(2):99-105
A mycological medium was developed for primary isolation and culture of lipophilic yeasts. It was initially based on published information of nutrients and trace components that would promote the growth of these yeasts. It was subsequently modified and adjusted to specifically promote the growth of lipophilic yeasts and simultaneously avoid the luxurious growth of other fungi and bacteria. With this medium, the conventional bacteriological procedures such as microbial streaking for pure culture and anti-microbial sensitivity testing could be carried out for these lipophilic yeasts.
Cultural
;
isolation aspects
;
growth aspects
;
microbial
;
Malassezia furfur
4.Seroprevalence of Malassezia furfur in an urban population in Malaysia.
Kaw Bing Chua ; Shamala Devi ; Poh Sim Hooi ; Kwai Hoe Chong ; Kai Lit Phua ; Joon Wah Mak
The Malaysian journal of pathology 2003;25(1):49-56
An in-house prepared M. furfur antigen was used to carry out a seroprevalence study in an urban population in Malaysia by indirect immunofluorescence assay. Of the 800 serum samples from all ages screened, 738 samples were positive for M. furfur specific IgG, giving an overall seropositive rate of 92.3%. There was no significant difference in the seropositive rates among the different gender group and races. However, there was a statistical significant difference in the seropositive rate among different age groups with a lower rate (73%) for the age group 5 years old and below, which increased rapidly to 99% for the 16 to 20 years old age group but declined slightly for the oldest age group. The degree of seropositivity, which semi-quantitatively reflect the anti-M. furfur specific IgG titre, did not show any significant difference among the gender and racial groups. On the other hand, there was a significant difference in the degree of seropositivity among the various age groups, with the 16 to 20 years old age group having the highest antibody titre and the extreme of age groups having the lower antibody titre.
Age Group Unspecified
;
seconds
;
Upper case emm
;
Malaysia
;
Old-age