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Biomedical subjects

M Venner

Publications and source records attributed to M Venner.

15 recordsLinked to original sources
PubMed2000

[Diagnosis of stomach carcinoma in the horse].

In 10 horses, which were referred to the clinic with the suspicion of disorders of the gastrointestinal tract, gastroscopy revealed a gastric tumour. In ten cases the diagnosis of a squamous cell carcinoma was made on the basis of histology of biopsies or autopsy. The tumour always derived from the non-glandulary mucosa. The horses showed various clinical symptoms. All patients had a hypoalbuminemia and a hyperglobulinemia in the serum electrophoresis. This suggests that a gastric tumour can be suspected intra-vitam even without gastroscopy of the patient.

Animals↗
PubMed1999

Treatment of gastric lesions in horses with pectin-lecithin complex.

This study compared the study of a pectin-lecithin complex (Pronutrin) on gastric ulcer healing during an 11 day period in 2 groups of 12 horses each. Twenty-four horses suffering from gastric lesions of differing severity were selected from a larger group of clinical cases on the basis of gastroscopic examination. Both gastric mucosal erosions as well as gastric ulcers were found in the 2 mucosal regions (pars nonglandularis and pars glandularis). The gastric mucosal lesions occurred predominantly in the pars nonglandularis in the vicinity of the margo plicatus. The 24 horses were divided equally into a treated group (Group A) and a control group (Group B). Twelve horses in Group A received Pronutrin, in a dose of 300 g/horse/day over a period of 10 days, whereas horses in Group B received no active substance. Gastroscopic examination was performed on Days 0 and 11. The degree of severity of the gastric erosions or gastric ulcers was evaluated independently in the 2 mucosal regions with the aid of a scoring system. Group A horses showed good acceptance of the product and no side effects were recorded. After the 10 day treatment phase, Group A showed a marked reduction in gastric mucosal lesions or disappearance of lesions, while untreated horses showed no change or, even, a deterioration on Day 11. Statistical calculation of efficacy revealed a highly significant reduction in gastric mucosal lesions in the pars nonglandularis and a significant reduction in gastric mucosal lesions in the pars glandularis in the treated horses. It would appear, however, that the treatment period of 10 days was too short, since the gastric mucosal lesions had often not completely healed in all horses. The results of this study in 24 horses with gastric lesions suggest that a pectin-lecithin complex can have a beneficial effect on the healing of gastric ulcers.

Animals↗
PubMed1998

[Determination of fibrinogen levels in the horse with the heat-precipitation methods of Schalm and Millar].

The purpose of this study was to investigate the usefulness of two heat-precipitation techniques (Schalm- and Millar-method) as screening tests to measure plasma fibrinogen concentration in horses. Based on the measurement of samples from 108 different horses, the coefficient of correlation (CC) for the relationship between the results with the Schalm- and with the reference-method (Jacobsson) were much lower (r = 0.78) than between the Millar- and Jacobsson-method (r = 0.94). Furthermore the Schalm-method was less precise as reflected by the greater coefficient of variation (CV, within-run precision) with a sample of low-limit fibrinogen concentration (CV = 47.4 %) and with a sample of high fibrinogen concentration (CV = 35.6 %) than the Millar-method (CV = 11.1 resp. 2.9 %). In 40 healthy horses, aged 3 to 19 years, fibrinogen values ranged from 1.82 to 4.94 g/l (2.5-97.5 %-quantil). The Millar-Method is recommended as a simple and suitable heat-precipitation assay for fibrinogen determination in the horse.

Animals↗
PubMed1997

[Effect of flunixin meglumine on plasma prostanoid concentrations in horses with colic in the perioperative period].

In the present study the significance of eicosanoids in the development of shock in horses on the basis of ileus has been investigated using the prostanoids thromboxane B2 (TXB2) and prostaglandine E2 (PGE2) as indicators. The prostanoid synthesis inhibitor flunixin meglumine was to be examined regarding its efficacy in the effective blockade of the synthesis of these mediators within the peri-operative timeframe as well as its effects on clinical signs and laboratory parameters. 21 horses suffering from ileus and ready for surgical intervention received an intravenous flunixin dosis of 1.1 mg/kg body weight immediately after the initial examination and prior to the surgical procedure. 20 colic horses receiving surgical treatment without application of the drug served as control group. Reference data concerning the approximate standard plasma levels of the prostanoids were determined in 10 healthy horses. Plasma levels of thromboxane B2 and prostaglandine E2 in all colic horses, treatment group as well as controls, initially proved to be significantly higher than the reference values in healthy horses. The untreated control group showed plasma levels highly exceeding the standards within the course of investigation. The application of flunixin meglumine resulted in an effective inhibition of the prostanoid synthesis. Post-operatively as well as within the whole period of investigation the plasma levels of PGE2 and TXB2 of the treated group were considerably lower than those of the control group. Flunixin meglumine had a favorable effect on several cardiovascular parameters. The experimental data concerning the effects of flunixin meglumine thus could be validated in a clinical setting, especially the effective inhibition of the cyclooxygenase enzyme system. The application of the prostanoid synthesis inhibitor flunixin meglumine can be judged as being effective in limiting shock progress in the peri-operative setting given reliable diagnosis.

Animals↗
PubMed1989

[Diagnostic assessment and documentation of psychosomatic diseases].

Besides the notion of psychosomatic medicine as a way of viewing, there is need of a definition of so-called psychosomatic diseases from the aspect of demarcation against general bio-psycho-social interactions. To this end, evidence of a framework of conditions has to be provided which integrates organopathological, experience-related psychological and social parameters. The traditional medical history must be broadened to cover these connections and for this purpose an orientation system is presented.

Documentation↗
PubMed1988

[Adjustment, coping and defense mechanisms--deciding factors in the therapeutic process].

Disease leads to a great number of psychosocial charges of man which must be coped with. Strategies of coping, as an active and flexible contest with disease and defence measures, as a more unconscious orientated to experience effort for internal adaptation are different possibilities to overcome a disease. A subdivision of strategies of overcoming according to Ehle is presented. Therapeutic consequences which result from the knowledge of processes of overcoming find their issue in a method of psychotherapeutic treatment for patients with psychosomatic diseases.

Adaptation, Psychological↗
PubMed1988

Bacteriology of periodontal disease in the cat.

Subgingival plaque samples were obtained from 32 cats showing different stages of periodontal disease. Correlations were sought between gingival index scores and the prevalence of various microbial groups, and between microbial populations found in sites designated as most-affected and least-affected within individual cats. The tendency with higher gingival index scores, and with the most-affected sites, was toward a microbial population composed to a greater extent of anaerobic Gram-negative rods. The most common organism was an anaerobic Gram-negative rod in the black-pigmented Bacteroides group that was biochemically similar to B. gingivalis but had catalase activity. The black-pigmented Bacteroides group and Peptostreptococcus anaerobius were found in increasing numbers with increasingly severe periodontal disease. Pasteurella multocida was isolated from most samples and appeared to decrease in numbers with increasing periodontal disease.

Animals↗
PubMed1984

[Necessity and difficulties of involvement of family members in the psychotherapy of psychosomatic patients].

Based on the particular problems which appear in psychosomatic patients the aim of the psychotherapeutic treatment of these patients is described. By inpatient group psychotherapy, a personality development is started that subsequently has to be continued in the real life situation of the patients. It is demonstrated which difficulties are brought about by the continuation of this development during subsequent outpatient treatment and how these difficulties can be overcome more easily by involving members of the family. The physical recovery aimed at may thus be achieved by a better compensation of defects in the primary psychic development of the psychosomatic patients.

Combined Modality Therapy↗
PubMed1979

[The concept of a dynamic group psychotherapy for patients with psychosomatic diseases].

From a 15-year experience with group psychotherapy in psychosomatic patients a plan of such a treatment is presented. In several points it deviates from the model of an intended dynamic group psychotherapy after Höck. These deviations are based on the peculiarities which differentiate psychosomatic patients and neurotics. In particular these are bodily symptoms of the disease, which show lower abilities for the recognition and verbalisation of emotional courses, and the experiences to be freed as a patient from certain struggles. With the help of several graphs is tried to represent the connection of three phases of treatment and their corresponding points.

Ambulatory Care↗
PubMedDate not supplied

Compensated overexpression of procollagens alpha 1(I) and alpha 1(III) following perilla mint ketone-induced acute pulmonary damage in horses.

Interstitial lung disease with chronic fibrosis is a frequent cause of reduced performance in horses. The aim of this study was to establish a model of acute alveolar damage and interstitial lung disease in horses that could be used to monitor the histopathological lesions and changes in expression levels of genes relevant to pulmonary fibrosis. Six adult horses were given a single intravenous injection (6 mg per kg body weight) of perilla mint ketone (PMK). Transthoracic lung biopsy samples (1 x 0.2 x 0.2 cm) were collected before and after (days 1, 4, 8, 11, 15, 18, 22, 25 and 29) the administration of PMK. Light and electron microscopy revealed severe acute alveolar damage (days 1 to 4), proliferation of type II pneumocytes (days 4 to 11) and finally complete healing at about day 18. However, unexpectedly severe clinical signs necessitated euthanasia in two horses on days 9 and 11. The expression levels of the collagen genes COL1AI and COL3AI as well as transforming growth factor (TGF)-beta were examined in the biopsy samples by reverse transcription-real time quantitative polymerase chain reaction. COL1AI and COL3AI gene expressions were upregulated (3- and 17-fold, respectively) between days 1 and 29 in all six horses, whereas TGF-beta was upregulated in two horses (2- and 4-fold, respectively), between days 4 and 18. Although the gene expression analyses indicated a strong activation of the pro-fibrotic pathway, no interstitial fibrosis was seen in any horse. A complete necropsy performed on day 60 revealed complete recovery of the lungs of the four surviving horses, with no evidence of fibrosis. Unidentified compensatory mechanisms may have prevented pulmonary fibrosis, despite strong upregulation of pro-fibrotic genes.

Animals↗
PubMedDate not supplied

Percutaneous lung biopsy in the horse: comparison of two instruments and repeated biopsy in horses with induced acute interstitial pneumopathy.

The aim of the study reported here was to compare complications of lung biopsy in horses and the quality of the lung specimens after biopsy using the manual Tru-Cut biopsy needle (TC) and an automated biopsy needle (ABN). For experiment 1, lung biopsy was performed in 50 horses with one instrument on one side of the thorax, and then with the other instrument on the other side. Postmortem examination was performed in 20 of the 50 horses. Coughing was detected in 10 of 50 horses and epistaxis was observed in 6 of the 50 horses. Endoscopy revealed bleeding into the airways in 16 of 49 horses and in 5 of 49 horses after biopsy with the TC or the ABN, respectively. Use of the ABN induced a significantly smaller amount of bleeding. Pneumothorax was detected by radiography in 1 of 50 horses. Hematoma diameter determined in 7 of 20 horses at postmortem examination, was significantly larger after biopsy with the TC than with the ABN. The quality of the lung specimen was good. In experiment 2, complications after repeated and multiple lung biopsies in 6 horses were evaluated. Moderate epistaxis was observed on 13 of 104 occasions. Bleeding into the airways was detected at endoscopy on 41 of 104 occasions, and pneumothorax was detected during 4 of 104 occasions. Complications such as hematoma at the biopsy site and bleeding into the airways were greater after biopsy with the TC than after use of the ABN. Lung biopsy specimens obtained with the ABN were fairly safe for the animal.

Animals↗