The importance of short food supply chains is increasing in the food sector, and direct selling is a promising alternative to commercial chains in dairy trade. Several channels and practices of direct raw milk sales exist in Hungary. Because short food supply chains in the Hungarian dairy sector have not yet been investigated in detail, we have little or no knowledge on the composition of directly sold raw milk. For this reason, a 9-month study was undertaken from June 2013 through February 2014, wherein directly sold raw bovine milk samples were tested for fat, protein, lactose, and solids-not-fat contents and for freezing point. A total of 21 direct sellers located in Budapest, Hungary were sampled twice a month. The results were compared to the official Hungarian raw milk quality data referring to the same period. The direct milk vendors involved in this study were found to sell raw milk with reduced levels of lactose and solids-not-fat and elevated freezing points, compared to the national raw milk data. The findings of this research underline the need for stricter regulations and control with respect to direct raw milk sales in the country.
In the present experiments the effect of systemic capsaicin treatment on the retrograde labelling of sensory ganglion cells was studied following the injection of choleratoxin B subunit-horseradish peroxidase conjugate (CTX-HRP) into intact and chronically transected peripheral nerves. In the control rats CTX-HRP injected into intact sciatic nerves labelled medium and large neurons with a mean cross-sectional area of 1041 ± 39 mm2. However, after injection of the conjugate into chronically transected sciatic nerves of the control rats, many small cells were also labelled, shifting the mean cross-sectional area of the labelled cells to 632 ± 118 mm2. Capsaicin pretreatment per se induced a moderate but significant decrease in the mean cross-sectional area of the labelled neurons (879 ± 79 mm2). More importantly, systemic pretreatment with capsaicin prevented the peripheral nerve lesion-induced labelling of small cells. Thus, the mean cross-sectional areas of labelled neurons relating to the intact and transected sciatic nerves, respectively, did not differ significantly. These findings provide direct evidence for a phenotypic switch of capsaicin-sensitive nociceptive neurons after peripheral nerve injury, and suggest that lesion-induced morphological changes in the spinal cord may be related to specific alterations in the chemistry of C-fibre afferent neurons rather than to a sprouting response of A-fibre afferents.
Authors:Z. Szántó, L. Benkő, B. Gasz, G. Jancsó, Ö. P. Horváth, and E. Rőth
Resection and subsequent end-to-end anastomosis of the windpipe is a tried-and-tested acceptable method for the surgical treatment
of segmental defects. There are a variety of different techniques for tracheal end-to-end anastomosis, but controversial reports
highlight the fact that the suturing technique of the anastomosis is still subject of debate. We aimed to show the postoperative
effects of the continuous and simple interrupted suturing technique respectively on the tracheal cartilage using differential
scanning calorimetry. Transsection and subsequent reanastomosis of the cervical trachea was performed in 14 adult beagle dogs.
The trachea was anastomized with continuous or simple interrupted sutures respectively depict no change in microcirculation
after the resection of the trachea, but significant decrease following the completion the anastomosis with continuous sutures.
Conventional histological analysis did not show any marked postoperative change in the tracheal cartilage but our DSC scans
clearly demonstrated the differences between the intact cartilages and the ones involved in the anastomosis.
Authors:Á. Horváth, P. Sántha, V. Horváth, Nóra Török, I. Nagy, G. Jancsó, Cs. Vágvölgyi, and F. Somogyvári
A new, rapid method is described which permits the genotyping of genetically modified animals from a microlitre volume of whole blood samples via one step polymerase chain reaction amplification. The major advantage of the presented method is the exclusion of a DNA preparation step, which significantly reduces the time expenditure and work load of the genetic testing. Pilot studies indicate, that this method is efficient and applicable also on tissue biopsies and larger amount of blood providing a rapid and reliable new technique over conventional genotyping approaches.
Authors:L. Benkő, J. Danis, M. Czompo, R. Hubmann, A. Ferencz, G. Jancsó, Z. Szántó, A. Zólyomi, F. Könczöl, Á. Bellyei, E. Rőth, and D. Lőrinczy
Massive bleeding from oesophagus varices presents
a life threatening complication of liver cirrhosis. No effective method of
treatment is available until now, that would guarantee high grade of patient
wellness during the conditioning and investigation phase until the definitive
treatment could be introduced.
The fact that we have not found any report in the
literature about self-expandable metal stents (SEMS) application in acute
variceal bleeding had encouraged us to use stents usually used for oesophageal
malignancy and furthermore develop a special stent for this individual indication.
The aim of this study
was to evaluate the tissue response to oesophagus stent designed for stop
acute variceal bleeding in animal experiment in compare with another stent
used for iatrogenic treatment of different strictures of the oesophagus. Tissue
oxygen saturation (StO2) measurement was performed
before and after the implantation of the stents. Macroscopic and histological
investigations of the stented oesophagus segments were observed after 10 days.
calorimeter (DSC) is a well-established method for the demonstration of thermal
consequences of local and global conformational changes in biological systems,
but it has never been used for the investigation of the oesophagus. According
to our results the thermal denaturation of intact oesophagus, its mucosa and
muscle fragments revealed significant differences compared to healthy sample
in favour of the new stent.