Caterpillars of Manduca sexta use two distinct transport mechanisms for the excretion of dyes. One pump (Type A) has a high affinity for acid (anionic) dyes and occurs in the midgut and medial Malpighian tubules. Acid dyes accumulate rapidly in the lumen of the midgut while the Malpighian tubules appear to play only a minor role in the excretion of these dyes. The other pump (Type B) excretes b...

Background: Midgut malrotation is an anomaly of intestinal rotation that occurs during fetal development and usually presents in the neonatal period. It is rare for midgut malrotation to present in adulthood. Method: We present a case of 15 year old girl presenting with acute abdomen of 15 days duration. Clinical evaluation and investigations revealed features of acute small gut obstruction wit...

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 ...