willow leaf beetle, plagiodera versicolora is an important pest of willow trees that feeds on the leaves both as larvae and as adults. -amylases (ec 3.2.1.1) are the major insect digestive enzymes that catalyze the endohydrolysis of long -1,4-glucan chains such as starch and glycogen. in the current study, -amylase activity was studied in the midgut of larvae and adults of p. versicolora. am...

midgut malrotation is typically presented during the first few months of life but sometimes may encounter later in life, causing difficulties and mistakes in diagnosis. we reviewed records of eleven rare patients with midgut malrotation older than one year of age and extracted their clinical and paraclinical data. the most common presenting symptoms were bilious vomiting, recurrent abdominal pa...

Midgut malrotation includes a range of developmental abnormalities that occur during fetal intestinal rotation. Manifestations of intestinal malrotation are generally seen in the paediatric population and are uncommon in adults. Symptomatic patients may present with either acute abdominal pain due to midgut volvulus, or chronic abdominal pain due to proximal midgut partial obstruction in the pr...

Bursicon is the main regulator of post molting and post eclosion processes during arthropod development. The active Bursicon hormone is a heterodimer of Burs-α and Burs-β. However, adult midguts express Burs-α to regulate the intestinal stem cell niche. Here, we examined the potential expression and function of its heterodimeric partner, Burs-β in the adult midgut. Unexpectedly, our evidence su...

Candidatus Liberibacter asiaticus (CLas) is a phloem-limited, gram-negative, fastidious bacterium that is associated with the development of citrus greening disease, also known as Huanglongbing (HLB). CLas is transmitted by the Asian citrus psyllid (ACP) Diaphorina citri, in a circulative manner. Two major barriers to transmission within the insect are the midgut and the salivary glands. We per...

Malrotation of the midgut is mainly a childhood congenital anomaly. Adult Midgut malrotation is rare with the clinical symptomatology varied and non-specific making pre-operative diagnosis difficult. Midgut volvulus from malrotation is a true surgical emergency requiring early intervention to prevent bowel necrosis and death.We report a 27yr old male who was referred to our centre with paralyti...

The Drosophila midgut is maintained throughout its length by superficially similar, multipotent intestinal stem cells that generate new enterocytes and enteroendocrine cells in response to tissue requirements. We found that the midgut shows striking regional differentiation along its anterior-posterior axis. At least ten distinct subregions differ in cell morphology, physiology and the expressi...

Abnormalities in midgut rotation occur during the physiological herniation of the midgut between the 5th and 10th week of gestation (Warner, 1997). The most significant abnormality is a narrow small bowel mesentery which is prone to volvulus. This occurs most frequently in the neonatal period. Less commonly (Nehra and Goldstein, 2011), midgut malrotation presents in adulthood with either acute ...

Dengue viruses (DENV) cause significant morbidity and mortality worldwide and are transmitted by the mosquito Aedes aegypti. Mosquitoes become infected after ingesting a viremic bloodmeal, and molecular mechanisms involved in bloodmeal digestion may affect the ability of DENV to infect the midgut. We used RNA interference (RNAi) to silence expression of four midgut serine proteases and assessed...

Using ELISA we provide direct evidence that the midgut defensins of the blood-sucking fly Stomoxys calcitrans are secreted into the gut lumen. We show that midgut defensin peptide levels increase up to fortyfold in response to a blood meal but not to a sugar meal. The data suggests the midgut defensin genes are post-transcriptionally regulated and that their function is protection of the stored...