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Drug delivery system is an amazing tool which widely used for drug protection and its controlled release in order to enhance bioavailability, reduce side effects therefore improve overall therapy. Hydrogels have been attracted great attention as carriers due their physicochemical properties, similarity the living tissues biocompatibility. One group of pH sensitive hydrogels are based on poly(me...

Fifty specimens of Cichla piquiti were collected from the Paraná River downstream of the Ilha Solteira Hydroelectric Power Station in Brazil and surveyed for endohelminth parasites. All fish were parasitised by at least one helminth species (overall prevalence [P] = 100%). Eight parasite taxa were present: the nematode Procamallanus (Procamallanus) peraccuratus in the intestines; third-stage la...

Diabetes was induced in rats by administration of a single intraperitoneal injection of streptozotocin (50 mg/kg body wt). After 7 days, one group of diabetic animals was treated with insulin for an additional 5 days. Control, diabetic and diabetic + insulin rats were then killed, their distal small intestines were removed and the epithelial cells were examined and compared with respect to poly...

Clostridium perfringens type B and type C isolates, which produce beta-toxin (CPB), cause fatal diseases originating in the intestines of humans or livestock. Our previous studies demonstrated that CPB is necessary for type C isolate CN3685 to cause bloody necrotic enteritis in a rabbit ileal loop model and also showed that purified CPB, in the presence of trypsin inhibitor (TI), can reproduce ...

The diversity and structure of the intestinal microbial community has a strong influence on life history. To understand how hosts and microbes interact, model organisms with comparatively simple microbial communities, such as the fruit fly (Drosophila melanogaster), offer key advantages. However, studies of the Drosophila microbiome are limited to a single point in time, because flies are typic...

MUTYH is a mammalian DNA glycosylase that initiates base excision repair by excising adenine opposite 8-oxoguanine and 2-hydroxyadenine opposite guanine, thereby preventing G:C to T:A transversion caused by oxidative stress. Recently, biallelic germ-line mutations of MUTYH have been found in patients predisposed to a recessive form of hereditary multiple colorectal adenoma and carcinoma with an...

It is well established that intraepithelial T lymphocytes (IELs) are derived from conventional single-positive (SP) thymocytes, as well as unconventional double-negative (DN) thymocytes and CD103+CD8alphabeta recent thymic emigrants (RTEs). We show that IELs can be divided into two groups according to their dependency on sphingosine 1-phosphate (S1P) for trafficking into the intestines. CD4 or ...