the aim of this study was to prepare a new formula of leishmania major (l. major) crude antigen and evaluate its effect on immune system. for this purpose l. major promastigotes were cultured, harvested, washed, and resuspended in physiologic saline and the suspensions were dispersed in five equal batches. 0.1 ml of various doses of the cocktail antigen were injected intradermaly in three group...

background: the aim of this study was to assess the performance of antigen b (agb) isolated from different echinococcus granulosus intermediate hosts and from different cyst locations for immu­nodiagnosis of human cystic echinococcosis (ce). methods: hydatid cyst fluids were collected from lung and liver cysts of sheep, liver cysts of goats, lung cysts of camels and cattle, and liver cysts of h...

Hydatid cyst fluid has been used as a source of antigen for the serodiagnosis of Echinococcus granulosus infection. Due to cross-reactions with antigens shared by other helminthes, the specific antigen from hydatid cyst fluid was purified by many workers. We used a relatively simple technique for purification of specific antigen from sheep hydatid cyst fluid. Isopycnic ultracentrifugation w...

BACKGROUND Human herpesvirus-6 (HHV-6) has been associated with a diverse spectrum of central nervous system (CNS) diseases and reported glial tropism. OBJECTIVE To determine if HHV-6 is present in a series of pediatric brain tumors. STUDY DESIGN Pediatric gliomas from 88 untreated patients represented in a tissue microarray (TMA) were screened for HHV-6 by nested polymerase chain reaction ...

background : echinococcosis or hydatidosis is a chronic, zoonotic worldwide infection caused by the larval stage of the dog taeniid tapeworm echinococcus granulosus. vaccination has been considered as one of the ways to prevent of hy-datidosis in recent decades. the aim of this study was to construct a pcdna3.1 eukaryotic expression vector contain-ing the subunit 8-kda antigen b (hyd1) of e. gr...

in addition to ultrasonographic monitoring of folliculogenesis, urinary luteinizing hormone testing, luteal phase endometrial biopsy, serum antiphospholipid antibodies, etc., immunologic tests are recently being used to evaluate reproductive disorders. in this study, sharing of hla-a, b, c and dr antigens and the presence of antipaternal cytotoxic antibody (apca) was assessed using microcytotox...

background: breast cancer is the most common cancer in women. prostate‑specifc antigen  (psa) is a marker of prostate gland malignancy, which has been considered in cases with breast cancer in recent years. the goal of this study was to determine total and free psa levels in cases with malignant and benign breast lesions. methods:   in  this case–control study, ninety women with histological pr...

apoptosis, or active cell death, is a specific mode of cell death, which is characterized by morphological changes such as chromatin condensation, fragmentation of the nucleus, cytoplasmic retraction and appearance of apoptotic bodies' containing apparently intact organelles. apoptosis occurs in physiological conditions as a regulatory mechanism of tissue growth, where cell proliferation is bal...

chlamydia trachomatis is an obligate intracellular bacterium which causes a wide variety of human infections such as ocular, urogenital and respiratory infections. genital infections of women, espe-cially when repeated, give rise to many complications such as ectopic pregnancy, miscarriage and in fertility. since chlamydial infections are usually asymptomatic, they progress unnoticed and produc...

background: cystic echinococcosis (ce), also known as echinococcosis/hydatidosis, is one of the most important parasitic diseases in the world. it enhances both humoral and cellular (th1 and th2) responses in infected host. different antigens of the worm may favor the th1 or th2 immune responses in ce patients. objective: to evaluate the humoral and cellular immune responses of balb/c mice agai...