Beside great improvement in diagnostical ant therapeutic aproach in curement of brain tumors, gliomas still have
bad prognosis. Better results could be obtained only in early tumor discavery. Alpha pheto protein (AFP) and carcinoembrionic antigen (CEA) are markers specific for certain carcinomas (hepatocelular, nonseminated testicular, colorectal). Thieir specifity for gliomas still has not been stated. The aim of tis study was to determine tissue or sera levels of AFP, and CEAin experimentaly induced gliomas, and teir poential use in human gliomas diagnosis. For analyses , tissue supernatant homogenate C6 of rat glioma and sera were used during different phases of development (days 0,7,14,21 and 31). Tumor markers were also determened as well as in tissue of human brain tumors (two anaplastic astrocitomas an one glioblastoma). Techique applied was immunoenzyme type Mein method. Obtained results showed no signs of AFPeither in sera, or in rat brain tissue or human glioma tissue. CEA however, showed statisticlly, important specifity, for glioma tissue. During tumorgenesis tissue concentracion of CEA showed statisticly higher levels in comparasion with controls , starting from day 7, reachin peak of tumorgenesis on day 21, (p < 0.001). CEAwas not detectable in control animal group sera, and also during the period of tumor development. CEA concentracion obtained from animal brain were similar to those in human
brain tissue tumors. Further investigation need to be caried out, in order to determine the potential role of this marker in
diagnosis and treatment establishment course.

Scientific research of effects of glucagon on the cardiovascular system have shown that glucagon has some
cardiostimulatory potential. The very interesting fact is that glucagon shows its cardiostimulatory effects by activating its
own, higly specific glucagonic receptors. That is way we wanted to research not only the effects of glucagon on the C.V.S.
but also its effects during the depression of the C.V.S. with high dosses of beta blocators (presolol) expecting a good
hemodinamic response. The experiment has been performed on two groups of 6 dogs. The first group of animal was treated
with i.v. bolus injections of glucagon and other group with presolol (15 mg/kg b.w.) i.v., and after that with i.v. bolus
injection of glucagon. Hemodinamic variables (mean arterial pressure, central venal pressure and hearth frequency) were
registred at the 1-st, 2-nd, 3-rd, 10-th, 20-th, 30-th and 40-th minute. The hearth frequency was registred by continous
monitoring, mean arterial pressure was registred with cateter in the arterial femoralis, while the central venal pressure was
registred over central venal cateter in v. femoralis. After the i.v. bolus injection glukagon shows higly positive effects,
followed by short-term increase of the mean arterial pressure, while the c.v.p. considerably falls. During the administration
of presolol the hearth frequency and mean arterial pressure fall considerably and progressively, while the c.v.p. rises
considerably. Glucagon, in conditions of c.v.s. depresion by high doses of presolol (15 mg /kg b.w.) considerably increases
hearth frequency and mean arterial pressure, while the c.v.p. falls considerably.