Can breast cancer Hsp 27 (Heat Shock Protein 27000) expression influence axillary lymph node status?

The expression of heat shock protein 27 (Hsp 27) in breast cancers correlates with stage of disease, the lower the stage the higher the expression, and with the presence or absence of lymph node metastases; lymph node negative patients being more likely to express Hsp 27 (P<0.04).

[Dendritic cells and their role in pathology]. / Células dendríticas y su papel en patologia.

The aim of this review is to update the knowledge on dendritic cells (CD), as potent antigen-presenting cells (APC) expressing class II major histocompatibility (MHC) antigen. The different types of DC are derived from a common bone marrow precursor. They differentiate and migrate to lymphoid and non-lymphoid tissues under the influence of diverse stimuli. After binding antigen in their periphery they move to the lymph node activating T cells. Depending on the microenvironment, DC express several surface markers and secrete cytokines such as IL-12, Il-1 and TNF alpha. DC play a role in the pathogenesis of autoimmune and viral diseases being relevant in AIDS. These cells also infiltrate human tumors where they could be involved in the induction of anti-tumor immune response. The immunostimulatory properties of DC are currently applied in DC-based therapies of melanoma and lymphoma patients.

[Presence of antisinusoid antibodies in alcoholic hepatitis. Its probable pathogenic implications]. / Presencia de anticuerpos anti-sinusoide en las hepatitis alcohólicas. Su probable implicancia patogénica.

In nine patients with histological diagnosis of alcoholic hepatitis, in-situ deposition of autologous immunoglobulins (IgG, Iga, IgM) were investigated by inmmuno fluorescent techniques (IF). In three patients a linear fluorescent pattern was seen on the sinusoidal walls. The bound inmunoglobulins could be eluted by treatment with low pH buffers. In the same patients circulating antibodies against liver structures were investigated by indirect IF using normal murine or human liver as targets. In the same patients showing bound immunoglobulins in their liver, curculating antibodies against human sinusoids and not against murine liver could be found. On the basis of these findings the probable pathogenetic role of immune mechanism in alcoholic liver damage is discussed.

Presencia de anticuerpos anti-sinusoide en las hepatitis alcohólicas. Su probable implicancia patogénica. / [Presence of antisinusoid antibodies in alcoholic hepatitis. Its probable pathogenic implications]

In nine patients with histological diagnosis of alcoholic hepatitis, in-situ deposition of autologous immunoglobulins (IgG, Iga, IgM) were investigated by inmmuno fluorescent techniques (IF). In three patients a linear fluorescent pattern was seen on the sinusoidal walls. The bound inmunoglobulins could be eluted by treatment with low pH buffers. In the same patients circulating antibodies against liver structures were investigated by indirect IF using normal murine or human liver as targets. In the same patients showing bound immunoglobulins in their liver, curculating antibodies against human sinusoids and not against murine liver could be found. On the basis of these findings the probable pathogenetic role of immune mechanism in alcoholic liver damage is discussed.

Presencia de anticuerpos anti-sinusoide en las hepatitis alcohólicas. Su probable implicancia patogénica / [Presence of antisinusoid antibodies in alcoholic hepatitis. Its probable pathogenic implications]

In nine patients with histological diagnosis of alcoholic hepatitis, in-situ deposition of autologous immunoglobulins (IgG, Iga, IgM) were investigated by inmmuno fluorescent techniques (IF). In three patients a linear fluorescent pattern was seen on the sinusoidal walls. The bound inmunoglobulins could be eluted by treatment with low pH buffers. In the same patients circulating antibodies against liver structures were investigated by indirect IF using normal murine or human liver as targets. In the same patients showing bound immunoglobulins in their liver, curculating antibodies against human sinusoids and not against murine liver could be found. On the basis of these findings the probable pathogenetic role of immune mechanism in alcoholic liver damage is discussed.