Both histopathological and immunohistochemical analyses were performed of the specimens of the descending part of the duodenum collected from
the patients. The histopathological analysis of the specimens of the duodenal mucosa and the assessment of the content of serotonin in the mucosa were performed at the Department and Institute of www.selleckchem.com/products/pexidartinib-plx3397.html Pathological Anatomy of the SMU. Immunohistochemical staining was performed in accordance with the following scheme: parts of tissue of the size of 4 μm cut on silanised slides were heated up in a laboratory heater at 60 °C for one hour and next deparaffinized in Xylene. At the next stage they were placed in a number of alcohols of decreasing concentration, after which the specimens were hydrated and the immunohistochemical RG7204 molecular weight analysis commenced. Endogenous peroxydase was inhibited for five minutes with 3% hydrogen peroxide. After rinsing the sections in TBS solution (DAKO, cat. no S 3001) they were incubated with the first antibody (Serotonin, DAKO cat.
no 1530) at room temperature in a ready dilution. The following stages of the immunohistochemical reaction were performed using the LSAB 2 developing kit (DAKO cat. no K 0675). DAB chromogen (DAKO cat. no K 3468) was used for the colour developing reaction. After rinsing in distilled water the sections were dyed with Meyer hematoxylin for one minute and rinsed in running water for 15 min. The preparations were then dehydrated in a number of alcohols of increasing concentrations, overexposed in Xylene and closed in DPX. Dyed serotonin cells were counted in 5 fields of vision when enlarged 200 times and numbered in relation to the number of tubules in the same fields of vision. The obtained results were compared to those obtained from the control group – homogenous in terms of age and sex with
the study group, without developmental disorders, and for which Farnesyltransferase the performed endoscopy showed a normal picture of the GI mucous membrane. Both histopathological and immunohistochemical analyses were performed on the same section and by the same group of pathomorphologists. The specialists had not been informed about the patients’ pervasive developmental disorders when analysing the sections (Fig. 1 and Fig. 2). Children with ASD and the inflammation of the duodenum have significantly fewer serotonin cells compared to autistic children with a normal picture of the duodenum (p = 0.0436). In the control group patients with duodenitis chronic have an increased percentage of serotonin cells compared to children without the inflammation of the duodenum (p < 0.001). At the same time, children without the autistic features, with pronounced duodenitis chronica have considerably more serotonin cells that autistic children with the same pathology (p = 0.0041) ( Table I).