objective: this study investigated tissue damages induced by chronic subcutaneous administration of nano- and microparticles of manganese dioxide (mno2) on the liver, kidneys and testes of rats. methods: rats (n=210) were divided into three groups: control, mno2 nanoparticle injected and mno2 microparticle injected. the experimental groups received subcutaneous injections with either nano- or m...

results the simulation results showed that the penetration depth and temperature rise of 980 nm wavelengths were different from those of 1064 nm wavelength. it appeared that 1064 nm wavelength penetrated to deeper layers of tissue compared with 980 nm. moreover, temperature rise during 1064 nm irradiation led to temperature increase in allowable ranges. the findings proved the reason why 1064 n...

introduction uterine leiomyomas are the most common benign solid tumors of the female pelvis. retroperitoneal myomas are extremely rare and usually malignant with the common location being in the pelvis. case presentation our case involved a woman who was suffering from dysparonia and radiculating right pelvic pain. the pelvic examination revealed a palpable tender mass of about 3-4 cm in size ...

recent studies have reported that metal sulfide nanoparticles had potential adverse effects.  in this research, lead (ii) sulfide nanoparticles have been synthesized under different reaction conditions. scanning electron microscopy and x-ray diffraction were used to characterize the particle size and morphology. distribution, accumulation and toxic effects of nanoparticles on rats as a biologic...

background and objective: different mechanisms may lead to the development of soft tissue tumor-like lesions in the oral cavity. many of these lesions can be identified as specific entities on the basis of their histopathological features and are divided into fibrous, vascular, and giant cell types. the purpose of this study was to establish the relative prevalence of the different histopatholo...

background and objective: in this study, we explored expression rate, some biomarkers affecting the prognosis of the breast carcinoma, and the relationship between these markers and clinicopathologic features of the disease as well as the relationship between each of these markers through a tissue array technique. materials and methods: this study was an observational and cross-sectional study....

the major lymphoid tissues in teleost fish are the kidneys, thymus, spleen and mucosa-associatedlymphoid tissue including the skin, gills and intestine. the head of kidney (pronephros) is an importanthaematopoietic organ and has morphological similarities with the bone marrow in higher vertebrates. in thisstudy, during 12 months from august 2002 to july 2003, 120 grass carp (10 fish/month) were...

please cite this article as : tavakoli-darestani r, kazemian gh, emami m, kamrani-rad a. poly (lactide-co-glycolide) nanofibers coated with collagen and nano-hydroxyapatite for bone tissue engineering. novel biomed 2013;1:8-15. background: a combination of polymeric nanofibrous scaffold and bioactive materials is potentially useful in bone regeneration applications. materials and methods: in th...

conclusions lower extremity movement extent was carefully evaluated and, in respect to muscle strength, the patient was able to walk independently three months after the surgery. the patient’s balance was studied and the results showed moderate levels of stability. case presentation this is a case report concerning a patient who had septic arthritis in the knee area and so underwent soft tissue...

introduction hemangiopericytomas (hpcs) are rare neoplasms which account for approximately 1% of primary vascular tumors. case presentation we report a 73 years old woman with vague abdominal pain who did not have further significant symptoms and was diagnosed to have retroperitoneal hemangiopericytoma. discussion the tumor was initially diagnosed by ultrasound evaluation. mri showed a lobulate...