We herein report a case of ileal invagination secondary to metastasis of a cutaneous melanoma. A 45-year-old female was admitted with intermittent abdominal pain and nausea. The patient's medical history was remarkable for cutaneous malignant melanoma. Imaging studies showed a solid mass in the right lower quadrant and the possibility of invagination. We made a preoperative diagnosis of partial...

In the last mitotic division of the epidermal lineage in the ascidian embryo, the cells divide stereotypically along the anterior-posterior axis. During interphase, we found that a unique membrane structure invaginates from the posterior to the centre of the cell, in a microtubule-dependent manner. The invagination projects toward centrioles on the apical side of the nucleus and associates with...

a 20-year-old man presented with the history of pain and swelling in the anterior maxillary segment. the periapical radiography was indicative of a dental anomaly in right maxillary lateral incisor. due to the insufficient information from conventional radiography, cone-beam computed tomography (cbct) was ordered. cbct showed apical root resorption, large apical lucency and two separate canals ...

Nous presentons le cas d'un jeune homme de 25 ans qui s·est presente a notre service avec le symptomatologie de !'abdomen aigue. Les investiga­tions preoperatoire ne montrent pas J'etiologie de son etat.  A.laparotomie on trouve une tumeur polypeuse (Lymphangiome) de la muqueuse jejunale causant l'invagination et la necrose de la paroi intestinale. 

Invaginations are partial enclosures formed by surfaces. Typically biological membranes; they abound in nature. In this paper, we consider fundamentally different structures: elastically stabilized invaginations. Focusing on spherical invaginations elastic membranes, carried out experiments and mathematical modeling to understand the stress strain fields underlying stable structures. Friction p...

Pancreaticoduodenectomy is the treatment of choice for resectable periampullary tumors. Anastomosis between the remnant of the pancreas and the intestine can be fashioned by various methods. An anastomotic leak can result in sepsis and even death. The rate of these complications is reported to be 10-28.5% [1]. Two widely used techniques for fashioning a pancreatic anastomosis are practiced: end...

Receptor-mediated endocytosis is inhibited during mitosis in mammalian cells and earlier work on A431 cells suggested that one of the sites inhibited was the invagination of coated pits (Pypaert, M., J. M. Lucocq, and G. Warren. 1987. Eur. J. Cell Biol. 45: 23-29). To explore this inhibition further, we have reproduced it in broken HeLa cells. Mitotic or interphase cells were broken by freeze-t...

Endocytosis depends on an extensive network of interacting proteins that execute a series of distinct subprocesses. Previously, we used live-cell imaging of six budding-yeast proteins to define a pathway for association of receptors, adaptors, and actin during endocytic internalization. Here, we analyzed the effects of 61 deletion mutants on the dynamics of this pathway, revealing functions for...