We treated an 11-year-old boy with a testicular Leydig cell tumor. We analyzed the testosterone production of this tumor by immunolocalization of steroidogenic enzymes and in vitro three-dimensional histoculture. Spermatic venous blood from the tumor bearing testis had noticeably high concentrations of testosterone and androstenedione. The tumor had the characteristic ultrastructural features o...

Granular cell tumor is a rare benign non-encapsulated tumor that mostly presents in oral cavity. Breast localization is uncommon and occurs in about one per 1000 cases of breast cancers. It mainly affects premenopausal women showing the possible role of estrogen and progesterone levels in the progression of this tumor. Granular cell tumor is a great emulator of the invasive ductal carcinoma of ...

The granulosa cell tumor is the most common malignant functioning tumor of the ovary. When functional, granulosa tumor almost always are estrogenic although rare tumors are androgenic. Progesterone producing by these tumors has only been reported twice. We report a case of granulosa cell tumor in a 7 years old girl with precocious puberty who represent the first case of progesterone producing b...

Erectile function is a complex neurovascular process that depends on the health of the central and peripheral nervous systems and the vasculature. Thus, signaling from the central nervous system (brain) to the peripheral nervous system (penis) is critical and is modulated by a set of complex interactions that depend on cerebral and vascular circulation. The cerebral and peripheral vasculatures ...

Although monoclonal in origin, mammary tumors acquire a marked heterogeneity of cell phenotypes, including a mixture of steroid hormone-sensitive cells and insensitive cells. We describe here long-term studies on the effects of androgen withdrawal on cloned androgen-responsive S115 mouse mammary tumor cells as a model system to investigate mechanisms by which tumor cells lose their steroid sens...

Due to the properties of tumor cell, the tumor establishes itself in the organ and grows there, so there is a competition between the tumor cells and host cell (normal cells) for nutrients. Evidences show that high dietary phosphorus increases the rate of protein synthesis and thus the cell number. So, other than oxygen, sulfur, the important element that both tumor cells and normal cells need ...

background recent studies revealed that tumor-associated macrophages (tams) play a decisive role in the regulation of tumor progression by manipulating tumor oncogenesis, angiogenesis and immune functions within tumor microenvironments. signal transducer and activator of transcription 3 (stat3), which is a point of convergence for numerous oncogenic signalling pathways, is constitutively activa...

to determine the prognostic value of response to treatment in patients with focal segmental glomerulo-sclerosis. fsgs includes 10-15% of idiopathic nephrotic syndrome in children. bulk of evidence supports disease relationship with immune system. unfortunately, responses to immunosuppressive drugs are not desirable and progression to end-stage renal disease is common. we analyzed 62 out of 99 c...

BACKGROUND We attempted to explore the molecular mechanism underlying PHY906 intervention of colon cancer. METHODS The microarray data of tumors treated by PHY906 and PBS alone were downloaded from the public Gene Expression Omnibus database. The dataset was further analyzed for the differentially expressed genes (DEGs) and their related biological functions were analyzed, followed by functio...