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Journal Article 2001; 22(1): 53-73 PubMed PMID: 11393163 Citation  Keywords:  Adrenal Glands:physiology, Animals, Biological Clocks, Blood Pressure:physiology, Chronobiology Disorders:physiopathology, Chronobiology Phenomena, Chronotherapy, Circadian Rhythm:physiology, Drug Administration Schedule, Genomics, Homeostasis, Humans, Pi.   

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Evaluation Studies 2009; 30(1): 32-38 PubMed PMID: 19300405 Citation  Keywords:  Adolescent, Adult, Anorexia Nervosa:diagnosis, Attitude to Health, Data Interpretation, Statistical, Diagnostic Techniques, Endocrine, Diagnostic Tests, Routine:statistics & numerical data, Female, Humans, Patient Admission, Patient Discharge:statistics &.   

OBJECTIVES: So far, no unequivocal answer has been provided to the question of how to treat girls with anorexia nervosa (AN). The goal of the study was evaluation of treatment results and search for prognostic factors, regarding the outcome of administered therapy in girls with AN.

PATIENTS AND METHODS: The analysis comprised eighty-seven (87) patients with diagnosis of AN. In the course of treatment, the patients received only a balanced and highly energetic diet. The effects of dietetic procedure were evaluated, comparing clinical data and routine laboratory test results (full blood cell count, serum concentrations of sodium, potassium, glucose, cholesterol, triglycerides, total calcium, phosphates, total protein and the urea) at the onset and on the last day of hospitalisation and also an analysis of clinical data in patients with regained menstrual cycles was performed. Also, on admission to hospital, serum concentrations of TSH, FT4, FT3, E2, T and cortisol were measured (the last hormone - three times - at 8:00, 17:00 and 24:00). Moreover, a stimulation test with GnRH was performed to assess LH and FSH release. A comparison was made between the clinical data, the results of routine laboratory tests and hormone concentrations, obtained at the beginning of the therapy in the group of cured girls (the girls with regained menses) and the group, in which the therapy did not bring complete elimination of the disease.

RESULTS: After hospitalisation, 75.9% of the patients with AN continued outpatient treatment. In all the patients, who adhered to proposed therapy, menstruation cycles returned within 1 to 12 months. It was found that in the group with positive treatment outcome, the patients were older, demonstrated higher BMI values at the beginning of the therapy, as well as shorter disease duration than those in the group of patients who refused further treatment. In the group of cured patients, estradiol concentrations were significantly higher and cortisol concentrations (at 17:00 and 24:00) were significantly lower, in comparison to the uncured group.

CONCLUSIONS: The findings suggest that body weight increase by proper diet application is the most important element of therapy in AN. Patient's age, disease duration, the degree of body weight loss and serum concentrations of estradiol and cortisol at 17:00 and 24:00 are the prognostic factors for the outcome of therapy in anorexia nervosa....

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Journal Article 2009; 30(1): 3-5 PubMed PMID: 19300403 Citation  Keywords:  Animals, Bombesin:physiology, Energy Metabolism:genetics, Homeostasis:genetics, Humans, Hypothalamo-Hypophyseal System:secretion, Pituitary Hormones:secretion,.   

: Bombesin and related peptides are widely distributed in gastrointestinal tract and central nervous system. It has been reported that they play an important role in the control of appetite, metabolism, sensory transmission and thermoregulation as well as in the regulation of pituitary hormone release. Central injection of these peptides leads to inhibition of feeding. There are controversial opinions about the effects of bombesin on pituitary hormone secretion both in vivo and in vitro experiments....

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Journal Article 2009; 30(1): 85-90 PubMed PMID: 19300400 Citation  Keywords:  Adolescent, Adult, Female, Humans, Male, Middle Aged, Multiple Sclerosis:cerebrospinal fluid, Nerve Growth Factor:cerebrospinal fluid, Neuromyelitis Optica:cerebrospinal fluid, Research Design, Severity of Illness Index, Thyroid Hormones:cerebrospinal flu.   

OBJECTIVE: Multiple sclerosis (MS) is an inflammatory demyelinating disease of the human central nervous system (CNS) and a major cause of neurological disability among adults in North America and Europe. Neuromyelitis optica (NMO) is a very severe disease of inflammatory demyelination located in the optic chiasm, nerves and the spinal cord. The aim of this study is to assess thyroid hormone (TH) and nerve growth factor (NGF) levels in cerebrospinal fluid (CSF) of MS, NMO patients and controls, and investigate whether there is any correlation between TH and NGF levels in the CSF.

PATIENTS AND METHODS: 38 relapsing-remitting multiple sclerosis (RRMS), 10 NMO and 19 controls were investigated whether there was any correlation between TH and NGF levels in the CSF.

RESULTS: MS and NMO patients exhibited significantly higher CSF NGF (respectively P<0.05, P<0.05), TT4 levels (P<0.001) and higher TT4/ rT3 ratio (respectively P<0.01, P<0.01) compared with the controls. Significant correlation was found between CSF NGF levels and CSF rT3 levels or TT4/ rT3 ratio in controls (respectively P<0.01, P<0.05). EDSS was significantly correlated with CSF rT3 levels and TT4/ rT3 ratio in MS patients (respectively P<0.05, P<0.001).

CONCLUSIONS: These results indicate that an abnormal thyroid hormone may exist within the brain in the patients with MS. CSF rT3 levels and TT4/ rT3 ratio could be regarded as useful markers of underlying disease activity....

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Controlled Clinical Trial 2009; 30(1): 39-45 PubMed PMID: 19300399 Citation  Keywords:  Age Factors, Aged, Aged, 80 and over, Alzheimer Disease:diagnosis, Anisotropy, Corpus Callosum:diagnostic imaging, Diffusion Magnetic Resonance Imaging:methods, Echo-Planar Imaging:methods, Female, Humans, Male, Middle Aged, Organ Size, Psychological Test.   

OBJECTIVE: The aim of the study was to assess structural changes in gray matter (GM) volume and fractional anisotropy (FA) in patients with Alzheimer's disease (AD) compared to control subjects using Voxel-Based Morphometry (VBM). Fractional anisotropy in the corpus callosum of both groups was also calculated using ROI analysis.

METHODS: Twenty-one patients and twenty-three control subjects underwent MRI examination using T1-weighted 3D MPRAGE sequence and diffusion spin-echo echo-planar imaging sequence in six directions. Structural MRI analyses for GM volume and FA were performed using an optimized VBM protocol implemented in SPM5. The influence of age and Mini-Mental State Examination (MMSE) was dealt with multiple regression analysis either for the whole group or for AD patients and controls separately.

RESULTS: Patients showed significant reduction of GM volume mainly in the temporal lobes. In AD patients, no correlation was observed between GM volume and age or MMSE. FA was reduced in AD patients mainly in frontal and temporal lobes. In both groups no correlation was found between FA and age or MMSE. Patients with AD showed a significant decrease in FA and an increase in mean diffusivity (p<0.0001) in the corpus callosum.

CONCLUSIONS: In patients with AD we observed a significant reduction in FA values and GM volume; however, no correlation with age and MMSE was proven for both FA and GM for AD patients. This finding supports the hypothesis that morphological changes in patients with AD are not a continuous aging related process but represent qualitative changes....

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Journal Article 2009; 30(1): 91-98 PubMed PMID: 19300397 Citation  Keywords:  Adult, Case-Control Studies, Endometriosis:blood, Estradiol:blood, Female, HLA Antigens:blood, HLA-G Antigens, Histocompatibility Antigens Class I:blood, Humans, Leiomyoma:blood, Menopause:blood, Menstrual Cycle:blood, Middle Aged, Ovarian Diseases:blood,.   

BACKGROUND: HLA-G is an antigen whose participation in the regulation of the immune system is well documented. The aim of the present study has therefore been to evaluate the sHLA-G blood serum concentrations levels in both women with ovarian endometriosis and women with uterine leiomyomas.

METHODS: In our study, the soluble HLA-G concentration level was evaluated in the blood serum samples obtained from 98 women who underwent laparotomies or laparoscopies due to either ovarian endometriosis or leiomyomatous uterus. The control group consisted of 42 women, including women on whom a diagnostic laparoscopy identified no lesions, and volunteers-healthy women who returned their blood serum samples during menstrual bleeding.

RESULTS: Patients who underwent surgical treatment because of ovarian endometriosis or uterine leiomyoma, as well as patients from the control group, exhibited no sHLA-G blood serum concentration level fluctuations between the proliferative and secretory menstrual cycle phases. The sHLA-G levels were significantly lower in the patients with ovarian endometriosis and in the patients from the control group during the menstrual cycle phase than in those patients with leiomyoma. A similar relation between the sHLA-G levels of the postmenopausal patients suffering from leiomyoma and the control patients was found. In contrast, the postmenopausal women suffering from endometriosis were typified by levels of sHLA-G blood serum concentration comparable to those of the patients with leiomyoma, and the levels were significantly higher than those observed in the blood sera of the postmenopausal patients from the control group.

CONCLUSION: The soluble HLA-G blood serum level would seem to be a useful marker for evaluating the status of the microenvironment, where the tumor-immune cell and ectopic and eutopic endometrial interactions take place....

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Comparative Study 2009; 30(1): 139-143 PubMed PMID: 19300396 Citation  Keywords:  Animals, Binding, Competitive, Carps:metabolism, Female, Gonadotropin-Releasing Hormone:metabolism, Humans, Mammals:metabolism, Pituitary Gland:metabolism, Protein Binding, Radioactive Tracers, Rats, Receptors, LHRH:metabolism, Salmon:metabolism,.   

OBJECTIVES: Receptor binding of GnRH is connected with the stimulation of pituitary gonadotropic cells leading to both the release and biosynthesis of gonadotropins. The binding is connected with the conformational changes in the receptor which induce the specific intracellular signalisation. The study of fish GnRHs and their receptors may give us new knowledge of the complex interplay of different mechanisms involved in neuroendocrine regulation of reproduction.

METHODS: Receptor binding of both mGnRH and sGnRH were compared by the study utilizing the displacement method with mGnRH or sGnRH as radioactive tracers. Incubation was performed at 2 degrees C to avoid ligand degradation.

RESULTS: The comparative binding of mGnRH and sGnRH with GnRH receptors from the female rat pituitary and female carp pituitary was studied. At the 50% of displacement, the binding of sGnRH to the rat pituitary receptor was very small and in comparison to the binding of mGnRH (100%) was in the range 2-15%. However, the binding of mGnRH to carp pituitary receptors is small in comparison with the binding of sGnRH (100%) and was in the range 5-20%.

CONCLUSION: The results demonstrated the differences in binding of different GnRHs to the receptor in rats and carp. This suggests that the structures of GnRH and its receptor undergo co-evolution in different classes of animals....

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Journal Article 2009; 30(1): 107-110 PubMed PMID: 19300395 Citation  Keywords:  Acromegaly:etiology, Adenoma:complications, Adrenocorticotropic Hormone:secretion, Adult, Aged, Cell Proliferation:drug effects, Cell Survival:drug effects, Drug Evaluation, Preclinical, Female, Human Growth Hormone:secretion, Humans, Hypoglycemic Agents:.   

OBJECTIVES: Rosiglitazone (RGZ) belongs to thiazolidinediones - new class of antidiabetic drugs which are PPARgamma agonists. It was shown that tumoral tissue, including the pituitary adenomas, posses PPARgamma receptors. The activation of PPARgamma receptors inhibits tumour growth in rodents and induces the oncostatic effect on human cancer cell lines. The aim of the present study was to examine the anti-tumour effect of RGZ on human pituitary adenomas in vitro.

MATERIALS AND METHODS: Cells of eight pituitary adenomas removed neurosurgically were used to our experiment. Before the operation, the hormonal secretion of the tumour was estimated. After the surgery, the histological diagnosis and immunohistochemical detection of pituitary hormones and PPARgamma receptors were performed. The cells of pituitary tumours were exposed in the primary culture to RGZ at the concentrations of 10(-9)-10(-4) M for 24 hours. To measure the cell growth the modified colorimetric Mossman method detecting the cells viability was applied.

RESULTS: On the basis of the pre-operative diagnosis the 6 clinically non-functioning adenomas (CNFPA), one case of acromegaly and one case of Cushing's disease were recognized. In 5 out of 6 CNFPA the immunopositive reaction for different pituitary hormones such as: LH, HGH, PRL, FSH and alpha-subunit was detected. Expression of PPARgamma was found in all examined tumours. Rosiglitazone decreased the cell viability of all CNFPA and corticotropinoma for 20% or more. In somatotropinoma inhibition of the cell growth was about 13%. There is no correlation between PPARgamma expression and efficacy of rosiglitazone. THE MAIN FINDING: The obtained results indicate that RZG exerts a suppressive effect on the cell viability in non-functioning pituitary adenomas. The lack of correlation between PPARgamma expression and anti-tumoral effect of RZG suggests that the above-mentioned action of this compound is independent on PPARgamma expression.

CONCLUSION: Our data suggest that rosiglitazone may be useful in the treatment of non-functioning pituitary adenomas, but its efficacy in Cushing's disease and acromegaly requires further study....

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