objective(s): evaluation of the sophora alopecuroides var. alopecuroides seed effects on morphine withdrawal syndrome in mice and determination of the alkaloid composition of the seed total extract. materials and methods:the effects of the seed total extract, alkaloid fraction and major compound matrine on the mice morphine withdrawal syndrome were compared to saline and methadone.mice were mad...

background: the coccidian protozoa toxoplasma gondii is an obligate intracellular parasite of humans and other warm-blooded animals. diagnosis of toxoplasmosis is of considerable medical importance for human, especially pregnant women and immunocompromised individuals. the apply of an escherichia coli recombinant antigen(s) would be significantly useful in developing standardization of the diag...

enhanced immune cell trafficking into the central nervous system (cns) and disruption of the blood brain barrier are pathophysiological hallmarks of neuroinflammatory disorders like multiple sclerosis (ms) and its animal model, experimental autoimmune encephalomyelitis (eae). however, recent studies suggest that the coagulation and the contact-kinin system might also be involved in ms developme...

background: several adjuvants have been evaluated for vaccine formulations but alu-minum salts will continue to be used for many years due to their safety, low cost and adjuvanticity with different antigens. two commonly used aluminum adjuvants, alumi-num hydroxide and aluminum phosphate have different adjuvanticity properties. com-mercial recombinant protein hepatitis b vaccines containing alu...

abstract background: research studies on reproductive mechanism of laboratory animals are essential for further advancement of assisted reproductive techniques (art). one of these studies includes the assessment of in-vitro development of pre-implantation embryos. the objective was to compare the cleavage rates and morphology of in-vivo formed 2 to 8 cell embryos and blastocysts with in-vitro c...

background: recently, embryonic stem (es) cells have become very important resources in basic medical researches. these cells can differetiate into derivatives of all primary germ layers. objectives: in order to isolate embryonic stem cells in vitro, the blastocyst were cultured and the morphological aspects, population doubling time, alkalin phosphatse and differentiation properties of the cel...

background: the application of luteal phase supplementation hormones to increase the implantation rate is on debate among researchers. objective: in this study, the morphological and morphometrical assessment of superovulated mice endometrium were investigated at window implantation period superovulated mice. materials and methods: female mice were superovualated then were mated with vasectomiz...

conclusions exposure to formaldehyde vapor can destroy testicular structure and decrease percentages of sperm count and progressive motility. the present study indicated that a reduction in the percentage of progressive motile sperm may be potentiated by noise (700-5700 hz) in the simultaneous exposure to formaldehyde and noise group. thus, it can be anticipated that simultaneous exposure to fo...

background: the uterus is a dynamic tissue responding to hormonal changes during reproductive cycles. as such, uterine stem cells have been studied in recent years. transcription factors oct4 and sox2 are critical for effective maintenance of pluripotent cell identity. objective: the present research evaluated the mrna expression of oct4 and sox2 in the uterine tissues of ovariectomized mice tr...

objective(s) there are some reports in recent years indicating that renal ischemia - reperfusion (ir) induces deleterious changes in remote organs such as liver. the aim of this study was to investigate whether leukocytes have a role on the induction of oxidative stress in liver after renal ir. materials and methods inbred mice in ir donor group were subjected to renal ir injury. in sham donor ...