Changes in testicular development, ultrasonographic and histological appearance of the testis in buck kids immunized against LHRH using recombinant LHRH fusion protein

This study was designed to evaluate the effectiveness of recombinant Ovalbumin-LHRL (OL) immunization on changes in testicular size, histological appearance and testosterone production in buck kids. Thirty native buck kids at 18 weeks of age were divided into three groups, control (n = 10), immunization (n = 10) and castration (n = 10) groups. Immunized animals received OL protein generated by recombinant DNA technology. Ultrasonographic and histological examinations of the testes were performed. Animals were slaughtered at 44 weeks of age. Semen and epididymides were evaluated for the presence of sperm cells. Immunized animals generated anti-LHRH antibodies. Testosterone production, testicular and accessory glands development and sperm production were suppressed in the immunized animals (p < 0.01). Semineferous tubule diameters decreased (p < 0.01), basal membrane of the tubule was thickened and hyalinized in immunized kids. Immunization affected ultrasonographic appearance of the testes drastically. While testes of control animals gained their normal ultrasonographic appearance as the age increased, immunized animals had uniform hypoechogenic testicular structure as observed at 18 weeks of age until slaughter. Simultaneous histological and ultrasonographic evaluations indicated that the changes in testicular histology could partly be monitored via ultrasonographic imaging; nevertheless, it is difficult to claim that ultrasonographic image reflects the exact changes in such instances. In conclusion, these results indicate that recombinant OL fusion protein is effective in immunocastration in buck kids and has a potential to be used as an alternative to physical castration. Further researches should be conducted to help assessing reproductive status of testes from ultrasound images.

Serological survey of bovine enterovirus type 1 in different mammalian species in Turkey

The bovine enterovirus type 1 (BEV-1) infection has a wide range of host spectrum including humans. In this study, seroprevalence of BEV-1 was investigated in eight mammalian species. Blood serum samples were collected from 244 humans, 1520 cattle, 272 horse, 126 dog, 281 sheep, 477 goat, 18 camel (Camelus dromedarius) and 82 gazelle (Gazella subgutturosa subgutturosa) in different regions of Turkey. Microneutralization tests showed that gazelle and camel did not have any seropositivities, but seropositivities were detected in humans (30.3%), cattle (64.8%), horse (12.8%), dog (3.2%), sheep (32.8%) and goat (27.6%).

SPG11 mutations are common in familial cases of complicated hereditary spastic paraplegia

BACKGROUND

Autosomal recessive hereditary spastic paraplegia (ARHSP) with thin corpus callosum (TCC) is a common form of complex hereditary spastic paraplegia. The genetic lesion underlying ARHSP-TCC was localized to chromosome 15q13-q15 and given the designation SPG11. Recently, the gene encoding spatacsin (KIAA1840) has been shown to contain mutations that underlie the majority of ARHSP-TCC cases.

METHODS

We present a complete analysis of the 40 coding exons of this gene in patients with sporadic (n = 25) or familial (20 probands) complex hereditary spastic paraplegia with and without thinning of the corpus callosum.

RESULTS

We identified seven mutations, including deletions, insertions, and nonsense mutations, which were all predicted to lead to premature truncation of the protein.

CONCLUSION

We conclude that mutations on KIAA1840 are frequent in complex autosomal recessive hereditary spastic paraplegia but an infrequent cause of sporadic complex hereditary spastic paraplegia.

Coronary vasospasm as the underlying cause for chest pain in patients with PVB19 myocarditis

OBJECTIVE

To evaluate the incidence of coronary vasospasm as a possible pathophysiological mechanism causing chest pain symptoms in patients with clinically suspected myocarditis.

DESIGN AND SETTING

Prospective study in a teaching hospital.

PATIENTS

85 patients who presented at hospital with atypical chest pain and demonstrated clinical signs suggestive of myocarditis.

MAIN OUTCOME MEASURES

Incidence of coronary vasospasm demonstrated by intracoronary acetylcholine (ACh) testing.

METHODS

The combined procedure of intracoronary ACh testing and endomyocardial biopsy (EMB) was performed after ruling out significant coronary artery disease (CAD). EMBs were analysed for myocardial inflammation by immunohistological methods and for virus genome persistence.

RESULTS

Pathological biopsy results, including myocardial inflammation or detection of viral genomes, or both, were found in 55 (64.7%) patients while 30 (35.3%) patients showed neither cardiac inflammation nor viral genomes and were defined as the control group. Coronary vasospasm was demonstrated in 39/55 (70.9%) patients with pathological results compared with only 12/30 (40.0%) with normal biopsy results (p = 0.01). Patients with isolated PVB19 infection (n = 22) demonstrated a significantly higher incidence of coronary vasospasm than both those with isolated HHV6 infection (86.4% vs 46.7%; p = 0.025) and those with normal biopsy results (86.4% vs 40.0%; p<0.001). Univariate and multivariate logistic regression analysis showed that only PVB19 infection was independently correlated with coronary vasospasm (OR = 4.9, 95% CI 1.56 to 15.28, p = 0.006).

CONCLUSIONS

Coronary vasospasm is one of the main reasons for atypical chest pain in patients with clinical signs of myocarditis and biopsy-proven PVB19 myocarditis in the absence of significant CAD.

Transsellar transsphenoidal rhino-oral encephalocele

Transsphenoidal encephaloceles are rare and the transsellar variety is the least common. We present a 1-year-old male patient with transsellar transsphenoidal encephalocele which herniated into the oral cavity through the congenital split palate. The patient was operated on using a combined transcranial and transpalatal approach without mortality or permanent morbidity. Clinical findings, imaging reviews, surgical repair techniques and postoperative morbidity are discussed with the relevant literature. We conclude that repair of a transsphenoidal encephalocele should be coordinated between a team of neurosurgeons and otorhinolaryngologists. Our surgical outcome supports a transcranial approach for the treatment of these difficult lesions, with transpalatal dissection and exposure.

Avian influenza A viruses in birds of the order Psittaciformes: reports on virus isolations, transmission experiments and vaccinations and initial studies on innocuity and efficacy of oseltamivir in ovo

Birds of the order Psittaciformes are - besides chickens, turkeys and other birds - also susceptible to infection with avian influenza A viruses (AIV) and succumb following severe disease within one week. Published data prove that various parakeets, amazons, cockatoos, African grey parrots and budgerigars (genera Barnardius, Psittacula, Cacatua, Eolophus, Amazona, Myiopsitta, Psittacus and Melopsittacus) were found dead following natural infections. Natural infections of highly pathogenic avian influenza viruses (HPAIV) of the haemagglutinin subtypes H5 and H7 cause severe disease and high rates of mortality. Experimental transmission studies with AlVs of the subtypes H5 and H7 confirm these data. Viruses of the subtypes H3N8, H4N6, H4N8, H11N6 and H11N8 may cause also clinical signs and occasionally losses in naturally infected psittacine birds. Clinical signs and losses were also noted following experimental infection of budgerigars with a H4N6 virus. In the EU and in other countries, vaccination of exposed exotic and rare birds and poultry is a possible and an acceptable measure to provide protection. Currently, the EU Commission accepts inactivated adjuvanted vaccines whereas in some other countries recently developed vector vaccines are applied. However, birds remain susceptible during the time interval between application of any vaccine and the development of immunity. This critical period can be bridged with antiviral drugs. Our in ovo studies demonstrate that the neuraminidase inhibitor oseltamivir is non-toxic for chicken embryos at concentrations of 0.1, 1.0 and 10.0 mg/kg body weight. These dosages prevented entirely the replication of a HPAIV of the subtype H7N1 when this drug is given shortly prior to, simultaneously or soon after inoculation of chicken embryos with this AIV. Thus, we speculate that exposed valuable birds such as psittacines at risk can be successfully treated.

Recurrent Cerebral Fat Embolism Due to Pleural Irrigation: Fat Density Lesions on CT. A Case Report

Fat embolism syndrome is a rare, but life-threatening problem and is usually associated with severe trauma. Neurological symptoms are variable, and the clinical diagnosis is difficult. We describe a patient with fat density lesions on cranial CT sections and discuss the etiopathogenesis of cerebral fat embolism (CFE) in this patient who does not have a history of long bone fracture, but metastatic lung disease and empyema. This is probably the first case report of CFE secondary to pleural irrigation of empyema with demonstrative CT findings.

Platelets contribute to enhanced MCP-1 levels in patients with chronic heart failure

BACKGROUND

Increasing scientific data suggest a role for inflammation in chronic heart failure (CHF), but up to now the exact mechanisms are still not clear. Recently, platelets were identified as inducing inflammation partly by releasing cytokines. This new aspect necessitates further studies about the contribution of platelets for the inflammatory setting of CHF.

METHODS

50 CHF patients (mean 66.9 (SD 12.6) years, mean EF 22.1% (SD 9.1)) and 25 healthy controls (mean 63.6 (SD 10.2) years) were examined. MCP-1 serum levels were measured via EIA, expression of platelet CD154 by flow cytometry. In in-vitro experiments activated platelets were cocultured with human umbilical vein endothelial cells (HUVEC) in the presence and absence of anti-CD154 antibodies. MCP-1 in the supernatants was measured by EIA.

RESULTS

CHF patients showed significantly enhanced MCP-1 levels (median: 191.8; 25th centile: 153.7; 75th centile: 227.1 pg/ml vs median: 101.0; 25th centile: 86.7; 75th centile: 117.5 pg/ml, p<0.001). MCP-1 levels positively correlated with severity of CHF. In the cell coculture model activated platelets were able to significantly induce MCP-1 release from HUVEC in a CD154-dependent manner. Furthermore, CHF patients showed enhanced platelet CD154 expression with a positive correlation with MCP-1 levels. Aspirin therapy had no influence on either CD154 expression or MCP-1 levels.

CONCLUSIONS

Platelets can contribute to enhanced MCP-1 levels in CHF. MCP-1 is markedly elevated in serum of CHF patients showing a direct correlation with the severity of symptoms and the degree of left ventricular dysfunction. Further studies are required to test whether MCP-1 blocking or sophisticated anti-platelet strategies may represent new therapeutic options in CHF.

[Mediastinitis and cervical fasciitis necroticans post extraction of 2 molars]

A 38-year-old man developed dysphagia, fever and marked trismus, resulting in an abcess of the parafaryngeal region, soon after the surgical extraction of 2 mandibular molars. Despite systemic antibiotics and surgical drainage, the abcess spread to the mediastinum. Within a short space of time, cervical fasciitis necroticans and descending necrotizing mediastinitis developed. Because of the life-threatening health condition, the patient was admitted to a hospital for further treatment. He underwent surgical exploration of the cervical and sternal region, thoracotomy for mediastinal drainage, debridement, and daily mediastinal rinsing with hydrogen peroxide and betadine iodine. After 5 weeks intensive treatment, the patient could be discharged from the hospital in a fairly good condition of health.

Validation of a prediction model for low volume/low grade cancer: application in selecting patients for active surveillance

PURPOSE

We previously demonstrated that assessment of the number of positive cores, tumor length in a core, Gleason score and prostate volume significantly enhanced the accuracy of a prediction model for low volume/low grade cancer in men who had undergone extended biopsy. To determine the validity of the model, we applied it to an independent population of men with prostate cancer.

MATERIALS AND METHODS

The study group included 170 men who had undergone radical prostatectomy without neoadjuvant therapy. In all cases, prostate cancer was diagnosed on only 1 positive core of a 10-core extended biopsy. We assessed the accuracy of the model, which consists of tumor length less than 2 mm, Gleason score 3+4 or less and prostate gland volume greater than 50 cc in predicting the occurrence of low volume/low grade cancer (defined as tumor volume less than 0.5 cc, no Gleason grade 4 or 5 disease, and organ confined disease).

RESULTS

Of the patients 101 (59.4%) had low volume/low grade cancer. Our model using all 3 previously mentioned variables had the highest performance, demonstrating a positive predictive value of 70.4% (88 of 125), a negative predictive value of 71.1% (32 of 45) and a diagnostic accuracy of 70.6% (120 of 170). This model performed better than a model based on tumor length only (positive predictive value, negative predictive value and diagnostic accuracy 68.1%, 57.9% and 64.7%, respectively) or a model based on tumor length and Gleason score (positive predictive value, negative predictive value and diagnostic accuracy 70.0%, 60.0% and 66.5%, respectively).

CONCLUSIONS

This study validates that our model with a combination of tumor length, Gleason score and prostate volume is predictive for low volume/low grade cancer in an independent population of men who demonstrated only 1 positive core in an extended biopsy. This model can be used as a tool for selecting men for active surveillance.

The role of prednisolone and epinephrine on gastric tissue and erythrocyte antioxidant status in adrenalectomized rats

It has been believed that overproduction of free radicals and/or deficiency of antioxidant systems, and stress hormones may play a role in etiopathogenesis of many diseases, including gastric ulcer. This study evaluated whether there was an effect of adrenalectomy on lipid peroxidation [malondialdehyde (MDA)] and antioxidant [superoxide dismutase (SOD), glutathione peroxidase (GPX) and glutathione (GSH) levels] systems in gastric tissue and erythrocyte in rats. As well, the impacts of administration of prednisolone and epinephrine on these systems in adrenalectomized rats were investigated. Thirty-three rats were randomly grouped as sham-operated (group I), adrenalectomized (group II), adrenalectomized + prednisolone (group III) and adrenalectomized + epinephrine (group IV). After experimental procedures, blood and gastric tissues samples were taken from each animal in all groups. Colorimetric assays were employed to determine gastric tissue and erythrocyte levels of MDA and GSH, and SOD and GPX activities. Adrenalectomy in group II rats caused a marked decrease of SOD and GPX activities and MDA levels, and an increase of GSH levels in gastric tissue and erythrocyte, when compared to sham-operated rats. However, especially epinephrine injection after adrenalectomy resulted in a significantly increase of measured antioxidant enzyme activities and GSH levels in both gastric tissue and erythrocyte. These results indicate that adrenalectomy appeared to alter the levels of antioxidants and lipid peroxidation product in gastric tissue and erythrocyte. Thus, the present study provides a physiological regulatory role of adrenal gland in the maintenance of oxidant/antioxidant balance in gastric tissue and erythrocyte.

Insulin resistance in children with Helicobacter pylori infection

We aimed at investigating insulin resistance in children with Helicobacter pylori (H. pylori) infection. Fasting serum insulin and glucose levels were determined in 31 children with H. pylori (+) (H. pylori-infected group, 20 girls and 11 boys, median age 12 yr, range 6-17) and 29 H. pylori (-) (control group, 18 girls and 11 boys, median age 13 yr, range 5-16). Insulin resistance was assessed using homeostasis model assessment of insulin resistance (HOMA-IR) score. Fasting serum glucose levels did not differ significantly between H. pylori (+) and (-) children. Both HOMA-IR score and serum insulin levels were significantly higher in H. pylori-infected compared to control children. The findings of the present study suggested that there is a certain relation between H. pylori infection and insulin resistance in children.

Treatment of incidental adnexal masses at cesarean section: a retrospective study

In this study, we evaluated the management of incidental adnexal masses observed at the time of cesarean section in our clinic during January 1992 to January 2005. The number of total live births was 35,153 and 8330 of them were by cesarean section (23.69%). There were 68 cases of incidental adnexal masses greater than 5 cm (68/8330, 0.8%). All of the masses were removed at cesarean section. The pathologic diagnosis of the masses were as follows: benign—benign cystic teratoma 20 (29.4%), simple serous cyst 8 (11.8%), simple mucinous 9 (13.2%), endometrioma 3 (4.4%), cystadenoma 14 (20.6%), and paraovarian–paratubal cyst 13 (19.1%) and malignant—struma ovarii 1 (1.5%). Cystectomy procedure during cesarean section did not alter the morbidity of the operation. So, we recommend resection of such incidental adnexal masses at cesarean section to avoid possible surgical procedures in future for the patient, although there is controversial data in literature

Outbreak of duck plague (duck herpesvirus enteritis) in numerous species of captive ducks and geese in temporal conjunction with enforced biosecurity (in-house keeping) due to the threat of avian influenza A virus of the subtype Asia H5N1

The continuing westward spread of avian influenza A virus of the subtype H5N1 in free-living and domestic birds forced the European Union and the German federal government to enhance all biosecurity measures including in-house keeping of all captive birds from October 20 to December 15, 2005. Movement of captive ducks and geese of many different species from a free-range system to tight enclosures and maintenance for prolonged times in such overcrowded sheds resulted in pronounced disturbance of natural behaviour, interruption of mating and breeding activities and possibly additional stress. Under these conditions the birds developed signs of severe disease and enhanced mortality twentyfour days later. A total of 17 out of 124 (14%) adult birds and 149 out of 184 year-old birds (81 %) died during the outbreak. A herpesvirus was isolated from many organs of succumbed ducks and geese that was identified as a duck plague herpesvirus by cross neutralization test using known antisera against duck plague virus. The published host range of duck plague comprises 34 species within the order Anseriformes. We report here on additional 14 species of this order that were found to be susceptible to duck plague virus. The exact source of the herpesvirus could not identified. However, low antibody titres in some ducks at day of vaccination indicate that at least some of the birds were latently infected with a duck plague herpesvirus. The remaining healthy appearing birds were subcutaneously vaccinated with a modified live duck plague vaccine (Intervet, Boxmeer, NL) that stopped losses and resulted in seroconversion in most of the vaccinated birds.

Serum levels of IGF-I and IGFBP-III and their relation with carcinoembryonic antigen and carbohydrate antigen 19-9 in cases of esophageal cancer

Tumour markers are used for diagnosis, staging, evaluation of response to treatment, prognosis and detection of recurrences in clinical oncology. In this study, we aim to investigate the levels of insulin-like growth factor (IGF)-I and IGF-binding protein (IGFBP)-III in cases with oesophageal carcinoma. We investigated their possible use as tumour markers and their relation to other tumour markers. Forty patients who were diagnosed as having oesophageal carcinoma by histopathological evaluation of endoscopic biopsies between January 2003 and July 2004 and 40 healthy people as the control group were included in the study. The serum levels of tumour markers including IGF-I, IGFBP-III, carcinoembryonic antigen (CEA) and carbohydrate antigen (CA) 19-9 were measured in both groups. Data were compared statistically, and the importance of IGF-I and IGFBP-III levels were investigated in cases with oesophageal carcinoma. IGF-I levels were significantly higher in patients with oesophageal carcinoma when compared with the control group (p < 0.05), whereas IGFBP-III levels were significantly lower (p < 0.05). The increase in CEA levels was not statistically significant when compared with the control group. The increase in CA 19-9 levels was statistically significant when compared with the control group (p < 0.05). No correlation was detected between levels of IGF-I and IGFBP-III and levels of CEA and CA 19-9. We suggest that the serum IGF-I level may be used as a tumour marker in oesophageal carcinoma. A low level of serum IGFBP-III is also significant in cases with oesophageal carcinoma. We believe that drugs which inhibit IGF-I function or which stimulate the function of IGFBP-III may open new horizons in extra-surgical modalities for the treatment of oesophageal cancer.

Increased prolactin in acute coronary syndromes as putative Co-activator of ADP-stimulated P-selectin expression

Prolactin and leptin are newly recognized platelet co-stimulators due to enhancement of ADP-induced platelet aggregation. The aim of our study was to assess whether both hormones prolactin and leptin play a role as co-activators of platelet activation in patients with acute coronary syndromes. Twenty-one patients with acute coronary syndromes, 10 with stable angina pectoris and 10 controls were studied. Patients with acute coronary syndromes showed significantly higher prolactin and leptin values and a significant increased P-selectin expression on platelets compared to patients with stable angina pectoris or controls. However, patients with acute myocardial infarction as a subgroup of acute coronary syndromes showed the highest prolactin levels as well as ADP stimulated P-selectin expression. In the myocardial infarction subgroup prolactin values showed a significant correlation to ADP stimulated P-selectin expression on platelets (r (2)=0.41; p=0.025), whereas leptin was not correlated. Our data indicate an association between increased prolactin values and enhanced P-selectin expression on platelets in patients with acute coronary syndromes. Therefore, the stress hormone prolactin could be a co-stimulator of platelet activation in these patients. In contrast, the putative platelet activator leptin does not seem to play a major role in acute coronary syndromes.

The evaluation of coagulation profiles in calves with suspected septic shock

The purpose of the study reported here was to evaluate the haemostatic function in calves with suspected septic shock and to reflect the occurrence of disseminated intravascular coagulation (DIC). Twenty-six calves suspected of having septic shock (experimental group) and 10 clinically healthy calves (control group) were used. On admission, the experimental group of calves had been ill for an average of 2 days. Therapy was applied to the experimental group of calves. The packed cell volume (PCV), haemoglobin (Hb), white blood cell (WBC), red blood cell (RBC) and platelet (PLT) counts were determined. Blood smears for toxic neutrophil and schistocyte intensity were evaluated. For the coagulation profile, plasma activated partial thromboplastin time (APTT), prothrombin time (PT), thrombin time (TT), fibrinogen and fibrin/fibrinogen degradation products (FDPs) values were determined. Toxic neutrophils in blood smears were observed in 12 calves of the experimental group. APTT was prolonged in the experimental group compared with the control group (p < 0.05). Fibrinogen concentration was found to be higher in the experimental group than in the control group (p < 0.001). Total leukocyte counts were higher in the experimental group compared with the control group (p < 0.01). Platelet counts in the experimental group were lower than the control group (p < 0.001). However, when the individual values of coagulation profiles of each calf were evaluated, 8 calves had at least three abnormal coagulation profiles (APTT >72 s, PT >34.5 s, TT >33.7 s, FDPs >5 microg/ml, PLT < or = 150 x 10(3)/mm(3)) and abnormal erythrocyte morphology (schistocytes > or = 1). The most common abnormal tests in the coagulation profile were APTT and PT (7 cases), FDPs (6 cases), thrombocytopenia (4 cases), and schistocytes in blood smears (8 cases) in these 8 calves. The results of this study indicate that DIC might be a significant risk factor for mortality in calves with suspected septic shock.

Early post-transplant smooth muscle neoplasia of the colon presenting as diminutive polyps: a case complicating post-transplant lymphoproliferative disorder

A 44-year-old woman, 3 years post-transplant for pulmonary sarcoidosis, developed abdominal pain and diarrhea 13 months subsequent to an eradicated diffuse large B-cell-type, post-transplant lymphoproliferative disorder (PTLD) of the cecal region. Endoscopic examination identified multiple pale tan 5-to-9 mm rubbery nodules of the transverse and right colon in an otherwise unremarkable mucosa. Histology was characterized by bland smooth muscle proliferations, focally pushing into the mucosa. Immunohistochemistry (IHC), in situ hybridization (ISH), and polymerase chain reaction (PCR) of the sampled nodules confirmed Epstein-Barr virus (EBV) infection of neoplastic cells. To our knowledge, this is the first reported case of EBV-related post-transplant lymphoproliferative and smooth muscle neoplasms (PTSN) having distinct tropism for the colon. Endoscopic features of early PTSN, which in this case presented as diminutive polypoid lesions, have not been described previously.

Somatic angiotensin converting enzyme in varicocele

The ACE is found as two isozymes in the body. A somatic isozyme found in blood and several other tissues, and a testis-specific isozyme found only in developing spermatids and mature sperm. In this study, we investigated the ACE activity in left spermatic vein blood samples of infertile patients with varicocele and its correlation to spermatologic parameters. The somatic ACE activities were determined in the peripheral and left spermatic vein blood samples from 31 infertile patients who underwent variococelectomy, and 11 fertile control subjects underwent left inguinal herniorraphy. The somatic ACE activity was measured by kinetic spectrophotometric assay. Semen analyses were performed according to WHO guidelines. The mean somatic ACE activities of peripheral and left spermatic veins of the varicocele group were 60.3 +/- 23.0 and 60.2 +/- 23.2 U/L, respectively. In control group, peripheral and left spermatic vein ACE activities were found as 56.8 +/- 17.1 and 56.5 +/- 15.5 U/L, respectively. There was no significant difference between the ACE activity in peripheral and left spermatic vein blood sample from the varicocele and control group. There was no statistically significant correlation between the spermatologic parameters and ACE activities in the spermatic and peripheral vein in both of varicocele and control groups. As a result, it may be suggested that the somatic ACE has no causative role in pathophysiology of varicocele and varicocele related infertility.

Long-term follow-up of patients with spinal cord injury

OBJECTIVE

The aim of this study was to evaluate the motor, sensory, and functional recovery in patients with spinal cord injury (SCI).

METHODS

Forty-one patients with SCI participated in this study. Twenty patients were evaluated after discharge. Each patient was evaluated by the American Spinal Injury Association (ASIA) impairment scale and the Functional Independence Measure (FIM) at admission, before discharge, and at least at 6 months after discharge. Friedman, Dunn, and Mann-Whitney U tests were used for statistical analysis.

RESULTS

There were 17 male and 3 female patients. Seven patients had complete SCI, and 13 patients had incomplete SCI. The evaluation of motor, sensory, and FIM scores at admission showed significant improvement in all of the patients during the follow-up period (P < 0.0001). Five incompletely injured cases improved with regard to ASIA staging. Motor and FIM scores significantly increased at follow-up for converted and unconverted patients. All parameters increased at follow-up in patients who were complete and incomplete. Motor scores significantly increased at discharge and at follow-up. FIM scores also increased significantly at follow-up in incomplete patients.

CONCLUSION

Motor, sensory, and FIM scores increased in patients with SCI after a follow-up period of 18 months. Improvement to a higher ASIA stage could be accomplished by 25% of the patients. Although both complete and incomplete patients recovered significantly at the follow-up period, only incompletely injured cases could convert to a higher ASIA stage.

Analysis of female reproductive traits in Angus beef cattle divergently selected for blood serum insulin-like growth factor I concentration

Insulin-like growth factor-I (IGF-I) is an anabolic polypeptide involved in reproductive performance in several species. The objectives of this study were to determine relationships of pregnancy rate, and age of heifers at puberty and at first calving with serum IGF-I concentration in Angus beef cattle. Data were obtained from an ongoing divergent selection experiment for IGF-I concentration involving purebred Angus cows. The IGF-I concentrations measured at Days 28, 42, and 56 of the 140-day postweaning test are abbreviated as IGF28, IGF42, and IGF56, respectively. Pregnancy rate did not differ between high and low IGF-I line females (P=0.95; n=2618), but high line heifers tended to be 4.02+/-2.18 days younger (P=0.07; n=281) at first calving. Residual correlations of age of heifers at first calving (AFC) with IGF-I measurements were not significant. The linear and quadratic terms for regression of AFC on IGF-I concentrations were also non-significant. Contrast analysis showed no difference in age at puberty between the high and low IGF-I line heifers (5.3+/-6.4 days earlier in the high line; P=0.43; n=51). Residual correlations of age of heifers at puberty with IGF28, IGF42, IGF56, and mean IGF-I were -0.30 (P=0.03), -0. 22 (P=0.12), -0.35 (P=0.01), and -0.34 (P=0.01), respectively. The observed relationships between female reproductive traits and IGF-I concentration in Angus beef cattle suggest complex and multiple roles for IGF-I in reproduction.

Posterior leukoencephalopathy after combination chemotherapy in a patient with lymphoma

Posterior leukoencephalopathy syndrome is a recently described syndrome involving mainly parieto-occipital gray/white matter of the brain. It occurs secondary to various clinical entities, like hypertension and immunosuppressive therapy. Few cases after combination chemotherapy have been reported. This study describes a 36-year-old woman with primary refractory T-cell lymphoma, who developed central nervous system toxicity due to treatment with intrathecal methotrexate and intravenous ifosfamide, idarubicine and etoposide given as a salvage regimen. Both clinical features as well as magnetic resonance imaging findings were typical for posterior leukoencephalopathy syndrome. The patient died despite anti-hypertensive therapy and haemodialysis. Central nervous system toxicity related to chemotherapeutics and posterior leukoencephalopathy syndrome are discussed briefly.

Patterns of delays in diagnosis amongst patients with smear-positive pulmonary tuberculosis at a teaching hospital in Turkey

In total, 151 newly diagnosed patients with smear-positive pulmonary tuberculosis were studied. The mean time from the onset of symptoms to the first visit to a physician was 46.4 days; the mean referral delay was 28.9 days; the mean delay in diagnosis was 2.4 days; and the mean delay in treatment initiation was 0.8 days. There was a delay in consulting a physician by 49% of patients. A low index of suspicion for tuberculosis on the part of the physician and healthcare system and laboratory delays were the most common reasons for delays in diagnosis.

Severe Angioedema Caused by Banana Allergy UnderTacrolimus Immunosuppression

Occurrences of allergic reactions induced by various foods have been reported in pediatric liver graft recipients receiving tacrolimus immunosuppression. We describe herein a female infant, who was admitted to our hospital with life-threatening angioedema because of banana hypersensitivity, 8 months after orthotopic liver transplantation. Food allergies should be screened in all tacrolimus-immunosuppressed pediatric liver recipients who show suggestive clinical symptoms. Banana must be added to allergen batteries during etiologic investigations. Cyclosporine represents an option for drug conversion to prevent organ rejection.

Avian influenza A viruses in birds --an ecological, ornithological and virological view

Avian influenza A viruses (AIV) are the causative agents of the presently most important poultry disease. Ten countries in Asia and several other countries in Eastern Europe suffer high losses from the lethal effects of these viruses of the H5N1 subtype. AIV of other subtypes cause in additional countries severe losses. The threat to health and well-being of the avifauna, domestic poultry and possibly mammals including humans are worldwide of major concern. The European Union reacted with a complete import ban on untreated meat, eggs, poultry products as well as free-living and pet birds. Extensive surveillance of free-living birds and domestic poultry that is maintained in free-range and close to open waters were initiated in an attempt to gather information on the current status of infection with these viruses and to target appropriate countermeasures for the protection of domestic poultry (in-house keeping) and to safeguard food production for humans. Since the monitoring of free-living birds is labour-intensive, costly, and time-consuming, only birds should be included in the monitoring programme that harboured in the past most if not all influenza A viruses. The birds of the order Anatiformes, family Anatidae, subfamilies Anserinae and Anatinae, provided 65.9 % of all avian AIV isolates. The cosmopolitan Common Mallard (Anas platyrhynchos) is the dominant species with the highest rate of isolations among all bird species. Second in frequency is the North-American Blue-winged Teal (Spatula discors). Consequently, free-living anatiform birds of the genera Anas and Spatula should comprise the main focus for the collection of cloacal and pharyngeal swabs. With the likely exception of the most recent H5N1 viruses, signs of disease were not recorded in AIV infected anatiform birds. AIV isolations were definitely less frequently obtained from birds of the orders Phasianiformes (including domestic chickens and turkeys), Charadriiformes (plovers and lapwings), Lariformes (gulls), Columbiformes (pigeons) and Psittaciformes (psittacines) and need less attention in sampling efforts. This review presents also data on taxonomy and most suitable means for isolation and typing of haemagglutinating viruses. The different frequencies of the detection of 16 haemagglutinin (HA) subtypes and 9 subtypes of neuraminidase (NA) surface antigens are composed on the basis of extensive literature retrievals. Both antigens occure in isolates at different frequencies. Only 103 of all 144 possible HA x NA combinations were described so far. The AIV that contain the HA subtypes H3, H4, H6 are most frequently isolated whereas the AIV of the subtypes H5 and H7 were less frequently encountered. All other HAs are rather rare. AIV that possess the NA of the subtypes N2, N1, N8 and N3 are frequent and all other NAs are rarely detected.

Virucidal activity of a new hand disinfectant with reduced ethanol content: comparison with other alcohol-based formulations

A new formula with reduced ethanol content (55%) in combination with 10% propan-1-ol, 5.9% propan-1.2-diol, 5.7% butan-1.3-diol and 0.7% phosphoric acid exhibited a broad spectrum of virucidal activity. In quantitative suspension tests, with and without protein load, this formulation reduced the infectivity titre of seven enveloped (influenza A and B, herpes simplex 1 and 2, bovine corona, respiratory syncytial, vaccinia, hepatitis B, bovine viral diarrhoea) and four non-enveloped (hepatitis A, polio, rota, feline calici) viruses >10(3)-fold within 30s. In comparative testing, only 95% ethanol showed similar levels of activity. In fingerpad tests, the formulation produced a log10 reduction factor of the titre of poliovirus type 1 (Sabin) of 3.04 in 30s compared with 1.32 by 60% propan-2-ol. Testing against feline calicivirus produced a log10 reduction factor of 2.38 by the test formulation; in contrast, the log10 reduction factors with 70% ethanol and 70% propan-1-ol were 0.68 and 0.70, respectively.

Phenotypic and Genetic Parameter Estimates for Racing Traits of Thoroughbred Horses in Turkey

Abstract. This study was carried out to investigate the fixed effects influencing racing traits of Thoroughbred horses and to estimate the genetic parameters for these traits, which are needed to design breeding programmes. The racing records used in the study were obtained from the Turkish Jockey Club. The traits used in the study were racing time, best racing time, rank, annual earnings, earnings per start, log annual earnings and log earnings per start. Genetic parameters were estimated by REML procedure using DFREML programme. The effects of age and sex were significant for each trait. The effect of year was significant on earning traits and time traits, except for best racing time on turf track. The effects of month on time traits were also significant. Heritability estimates of entire dataset were 0.317, 0.467, 0.132, 0.194, 0.291, 0.188 and 0.341 for racing time, best racing time, rank, annual earnings, earnings per start, log annual earnings and log earnings per start, respectively. Estimates of repeatability varied from 0.293 to 0.465 for racing time, from 0.373 to 0.531 for best racing time and from 0.215 to 0.232 for rank depending on the dataset used in the analyses.

An experimental analysis on the magnetic field sensitivity of the black-meadow ant Formica pratensis Retzius (Hymenoptera: Formicidae)

Ant responses were tested under both the natural geomagnetic and artificially induced Earth-strength electromagnetic field. Foragers were trained for a month to visit a food source at the north arm accessed through an orientation platform assembly. Under the natural geomagnetic field, when all other orientational cues were eliminated, results indicated significant heterogeneity of ant distribution with the majority seeking geomagnetic north in darkness. However, in light, foragers failed to discriminate geomagnetic north. Under shifted artificial electromagnetic field, orientation was predominantly on the artificial magnetic N/S axis with a significant preference for the artificial north in both light and dark conditions.

Simultaneous bilateral trochanteric fractures during squatting in a patient with multiple myeloma

Pathologic bone fractures are usually confined to the trunk in multiple myeloma (MM). But bilateral trochanteric fractures have not been reported in patients with MM before. Radiographic, histological and immunoelectrophoresis revealed typical features of MM. This report points out the importance of physical rehabilitation of patients in addition to chemotherapy in adaptation to the activities of daily living.

Proton T1 and T2 relaxivities of serum proteins

In the present study, T(1) and T(2) of phantoms containing serum sets with varying amounts of proteins, serum samples with certain amounts of proteins, serum diluted by distilled water, and serum treated with iron were measured. In addition, T(1) and T(2) of phantoms containing normal serum, diluted serum, and albumin-doped serum were also measured. Relaxation rates were plotted versus protein concentrations. The slope of relation was taken as relaxivity. The T(1) relaxivities of proteins were ranged from 0.035 to 0.080 s(-1)(g/dl)(-1), whereas T(2) relaxivities were ranged from 0.24 to 0.68 s(-1)(g/dl)(-1). The T(1) and T(2) relaxivities of transferrin iron were 2.40 and 2.60 mM(-1)s(-1), respectively. The contributions of diamagnetic proteins and transferrin iron to the relaxation rate of serum were also calculated for each of diluted serum, normal and albumin-doped serum. The contributions and the average TP relaxivities(calculated by using individual relaxivities and the ratios of protein fractions in TP) were used for TP calculations. The agreement between the calculated TP and TP by autoanalyzer and also the agreement between average TP relaxivities and the TP relaxivities determined from dilution experiments show that the data of relaxivities are reliable. The results suggest that individual protein relaxivities explain the influence of serum TP composition on T(1) and T(2) relaxation times.

Estimation of (co)variance components for reproductive traits in Angus beef cattle divergently selected for blood serum IGF-I concentration123

The objective of this study was to obtain estimates of (co)variance components for reproductive traits and insulin-like growth factor-I (IGF-I) concentration. Data were from a divergent selection experiment for blood serum IGF-I concentration in Angus beef cattle. Numbers of observations for mean IGF-I concentration of three blood samples taken at d 28, 42, and 56 of the 140-d postweaning test, scrotal circumference (SC), percentage of motile sperm cells (PMSC), percentage of morphologically normal sperm cells (PNSC), age of heifers at first calving (AFC), and calving rate (CR) were 1,848, 825, 596, 765, 294, and 2,092, respectively. Total number of animals in the numerator relationship matrix, including base animals, was 2,864, of which 1,861 were inbred. Estimates of direct heritability for IGF-I concentration of three blood samples collected at d 28, 42, and 56 of the postweaning test and for mean IGF-I concentration were 0.43+/-0.08, 0.51+/-0.09, 0.41+/-0.08, and 0.50+/-0.08, respectively. Estimates of direct heritability for SC, PMSC, PNSC, AFC, and CR were 0.51+/-0.13, 0.08+/-0.12, 0.47+/-0.07, 0.26+/-0.28, and 0.11+/-0.05, respectively. With the exception of age at first calving, estimates of maternal heritability and proportion of phenotypic variance that were due to permanent environmental effects of the dams were smaller than 0.21. Observations for calving rate were entered as either 1 (if calved) or 100 (if not calved). Estimates of additive genetic correlations of mean IGF-I concentration with SC, PMSC, PNSC, AFC, and CR were 0.35+/-0.11, 0.43+/-0.32, 0.00+/-0.03, -0.14+/-0.33, and -0.41+/-0.16, respectively. Environmental and phenotypic correlations for all of the traits with IGF-I measurements were smaller than 0.23. These results suggest that selection for increased serum IGF-I concentration should result in increased scrotal circumference, percent motile sperm cells, and calving rate.

[Disinfectant tests at 20 and 10 degrees C to determine the virucidal activity against circoviruses]

To evaluate virucidal activity against porcine circovirus type 2 (PCV2), four disinfectants were tested under laboratory conditions. As basis to perform the testing the "Guidelines for testing chemical disinfectants" of the German Veterinary Association (DVG-guidelines) were applied. For simulation of field conditions, the tests were carried out in virus carrier tests, at 20 and 10 degrees C, and under protein load (40% foetal calf serum (FCS) in virus suspension). For disinfection of PCV2 at 20 degrees C an exposure time of 120 min in 2% Disinfectant 1 (20% glutaraldehyde, 12% 2-propenal, polymer with formaldehyde) or Disinfectant 2 (55% formic acid, 7% glyoxylic acid) was necessary. 1% of Disinfectant 3 (Component 1: Potassium peroxomonosulphate. Component 2: Active detergents) disinfected PCV2 on carriers within 180 min. After a reaction time of 120 min with 1% and 60 min with 2% Disinfectant 4 (21% glutaraldehyde, 17% formaldehyde) there could not be detected any virus. Reduction on effectivity through temperature reduction to 10 degrees C were more significant for aldehyde containing preparations Disinfectant 1 and Disinfectant 4 than for Disinfectant 2 and Disinfectant 3. These losses on effectivity could be corrected through extension of exposure time or increase of concentration.

Determinants of MR relaxation rates in jaw cysts: implications for diagnostic values of the relaxation times

OBJECTIVES

The MRI signal intensities and the relaxation times (T1 and T2) have already been used for comparisons among various types of cysts. The signal intensities (or T1 and T2) were suggested to be related to cyst content. However, such a relationship between the relaxation rates (1/T1 and 1/T2) and the aspirated content of jaw cysts was not given. Therefore, an investigation on the determinants of the relaxation rates in the jaw cysts may be helpful in elucidating the biological basis for the differences in relaxation rates among the categories of jaw cysts.

METHODS

The aspirated contents of 23 cysts (16 radicular and 7 haemorrhagic) were scanned using an MR imager operating at 1 T magnetic field strength. The viscosities and the dry-weight-to-water-weight ratios (Ms/Mw) were determined. Also, the mean values of cyst categories were compared using statistical analysis.

RESULTS

The 1/T1 had a moderate correlation with viscosity (0.66) and Ms/Mw (0.56), while the 1/T2 had a good correlation with viscosity (0.87) and Ms/Mw (0.82). The mean values of viscosity, Ms/Mw and relaxation rates in radicular cysts were significantly lower (P < 0.05) than those of haemorrhagic cysts.

CONCLUSIONS

The present data suggest that similarities and differences between relaxation rates of radicular and haemorrhagic cysts can be explained by the solid content and viscosity of cysts.

Delay of neutrophil apoptosis in acute coronary syndromes

Apoptosis of polymorphonuclear neutrophils (PMN) is currently discussed as a key event in the control of inflammation. This study determined PMN apoptosis and its underlying mechanisms in controls (C), patients with stable (SAP) or unstable angina (UAP), and with acute myocardial infarction (AMI). Blood was drawn from 15 subjects of each C, SAP, UAP, and AMI. Apoptosis was measured by flow cytometry in isolated PMN (propidium iodide staining) and PMN from whole blood (CD16, FcgammaRIII). Serum cytokines were determined by enzyme-linked immunosorbent assay. Apoptosis of isolated PMN was delayed significantly in acute coronary syndromes (ACS) as compared with SAP or C (C, 51.2+/-12.6%; SAP, 44.9+/-13.6%; UAP, 28.4+/-10.1%; AMI, 20.3+/-8.5%; AMI or UAP vs. SAP or C, P<0.001). These results were confirmed by measurement of PMN apoptosis in cultured whole blood from patients and controls. Moreover, serum of patients with ACS markedly reduced apoptosis of PMN from healthy donors. Analysis of patients' sera revealed significantly elevated concentrations of tumor necrosis factor alpha, interferon-gamma (IFN-gamma), granulocyte macrophage-colony stimulating factor (GM-CSF), and interleukin (IL)-1beta in ACS (vs. C and SAP). IFN-gamma, GM-CSF, and IL-1beta significantly delayed PMN apoptosis in vitro. Furthermore, coincubation of PMN with adenosine 5'-diphosphate-activated platelets significantly inhibited PMN apoptosis as compared with coculture with unstimulated platelets. This study demonstrates a pronounced delay of PMN apoptosis in UAP and AMI, which may result from increased serum levels of IFN-gamma, GM-CSF, and IL-1beta and from enhanced platelet activation. Therapeutical modulation of these determinants of PMN lifespan may provide a new concept for the control of inflammation in ACS.