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Topic: Papilla


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In the News (Wed 15 Feb 12)

  
 [No title]   (Site not responding. Last check: 2007-10-17)
According to the present invention, papilla cells are introduced into or in contact with human skin in conjunction with a removable, biologically inert vehicle capable of inserting papilla cells under or in contact with the epidermal layer of the skin.
In one embodiment of the invention, papilla cells for implantation are derived from hair-growing scalp biopsies.
An apparatus for the packaging and placement of papilla cells, the apparatus comprising at least one tube, wherein the tube comprises papilla cells that are sealed in individual segments of the tube, thereby forming an apparatus for the packaging and placement of papilla cells.
www.wipo.int /cgi-pct/guest/getbykey5?KEY=03/88935.031030&ELEMENT_SET=DECL   (5599 words)

  
 Papilla - Wikipedia, the free encyclopedia
A small projection, such as a nipplelike projection on the skin, at the base of a hair or the root of a feather; the base of a new tooth.
An interdental papilla is the part of gingiva located between teeth.
As with most internal growths, it is usually advised to have the Papilla surgically removed to prevent the formation of cancer.
en.wikipedia.org /wiki/Papillae   (225 words)

  
 Dental papilla - Wikipedia, the free encyclopedia
The dental papilla is a condensation of ectomesenchymal cells called odontoblasts, seen in histologic sections of a developing tooth.
The dental papilla gives rise to the dentin and pulp of a tooth.
The enamel organ, dental papilla, and dental follicle together forms one unit, called the tooth germ.
en.wikipedia.org /wiki/Dental_papilla   (116 words)

  
 MUSC DDC - Pancreas & Biliary Tree
The main papilla of Vater (named after an Italian) is a small nipple-like structure on the wall of the duodenum, in its "second part." The duodenum is the upper part of the small intestine, into which food flows from the stomach.
The minor papilla acts as a useful safety valve when the main papilla is not able to function correctly, but becomes the main site of drainage for pancreatic juices in the rare congential disease of pancreas divisum.
The importance of this is that the minor papilla may be too small to allow easy passage of the pancreatic juices; and some patients with pancreas divisum can develop attacks of pain and pancreatitis as a result due to this relative narrowing.
www.ddc.musc.edu /ddc_pub/digestiveOrgans/pancBiliary.htm   (1671 words)

  
 Controls of Hair Follicle Cycling -- Stenn and Paus 81 (1): 449 -- Physiological Reviews
In contrast to the epithelial compartment of the follicle and the endothelial cells in the papilla (444), the fibroblastic
papilla of follicles in a caudal to cephalic gradient; expression
to the papilla or in the proximal ORS (262, 454).
physrev.physiology.org /cgi/content/full/81/1/449   (10676 words)

  
 The renal papilla is a niche for adult kidney stem cells -- Oliver et al. 114 (6): 795 -- Journal of Clinical ...
In the papillae of the nonischemic kidneys, the number of BrdU-retaining cells averaged 36% of the total cells, while in the papillae of the kidneys subjected to transient ischemia, this number was only 4%, as shown to the left of each histogram.
The absence of significant apoptosis in the papilla of kidneys
in response to ischemia; apoptosis was absent from the papilla
www.jci.org /cgi/content/full/114/6/795   (7568 words)

  
 Dorlands Medical Dictionary
papil´lae lingua´les [TA] lingual papillae: the filiform, fungiform, vallate, foliate, and conical papillae of the tongue.
a small papilla of gingival tissue located at the foot of the ramus of the mandible and attached to the most inferior part of the anterior border of the ramus.
papil´lae valla´tae [TA] vallate papillae: the largest papillae of the tongue, 8 to 12 in number, arranged in the form of a V anterior to the sulcus terminalis of the tongue.
www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_p_03zPzhtm   (3847 words)

  
 eMedicine - Papillary Tumors : Article by Nuri Ozden, MD
Tumors of the periampullary region are an unusual and heterogeneous group of neoplasms that include lesions of the major papilla, the ampulla of Vater (the flask-shaped terminal channel of the bile and pancreatic ducts), and the periampullary duodenum.
Metastatic tumors of the papilla are extremely unusual and may arise from a variety of primary lesions, including lymphomas, malignant melanomas, adenocarcinomas of the breast, and renal cell carcinomas.
The prognosis for patients with malignant tumors of the papilla depends on the extent of local tumor invasion and the presence or absence of vascular invasion, lymph node involvement, and distant metastases.
www.emedicine.com /med/topic3524.htm   (4748 words)

  
 A Two-Mode Model of Motion of the Alligator Lizard Basilar Papilla
The BM underneath the papilla is not connected to the tissue on either side; rather, the papilla and BM are supported by hyaline epithelial cells.
Consequently, pressure on the BM exerts a torque on the basilar papilla.
When the basilar papilla simultaneously translates and rotates, the detailed shape of the plot depends on the relative magnitudes and phases of the two modes of motion.
umech.mit.edu /aja/posters/aro02/aro02.html   (1589 words)

  
 The Renal Pelvis: Machinery That Concentrates Urine in the Papilla -- Dwyer and Schmidt-Nielsen 18 (1): 1 -- Physiology
The mammalian renal medullary countercurrent system exists in a papilla that is surrounded by a urinary space bounded by a muscular pelvic wall (17).
Similarly, a papilla was snared during the relaxation phase, showing the collecting ducts to be open, the cells to be smaller in volume, and spaces to be present between the cells of the collecting ducts (17).
Ducts of Bellini are generally patent, as shown by these in a rabbit papilla (tissue was pressure perfused and examined with a scanning electron microscope; Ref. 5).
physiologyonline.physiology.org /cgi/content/full/18/1/1   (3671 words)

  
 Hair Cell Morphology And Innervation In The Basilar Papilla Of The Emu (Dromaius Novaehollandiae)
There are, however, no qualitative differences with the papillae of other birds such as the chicken or the starling.
In detail, however, a number of primitive characters were observed in the emu, as compared to advanced birds such as the starling and the barn owl.
The afferent nerve fibers contacting the hair cells within the basilar papilla are rather thick, and there are a large number of afferent fibers that contact more than one hair cell.
www.emumagic.com /R14.html   (276 words)

  
 Developmental Biology Online: Formation of Mammalian Hair
Their cell fate is specified by their initial positioning relative to the dermal papilla at the base of the follicle (Chase, 1954; Millar et al., 1999).
The dermal papilla is characterized by NCAM expression.
As a result of continued proliferation by the stem cells directly over the dermal papilla, the hair fiber is pushed upwards within the follicle and it produces the hair keratins.
7e.devbio.com /article.php?ch=12&id=128   (1764 words)

  
 Differential Expression of Metastasis-Associated Genes in Papilla of Vater and Pancreatic Cancer Correlates With ...
Differential Expression of Metastasis-Associated Genes in Papilla of Vater and Pancreatic Cancer Correlates With Disease Stage -- Friess et al.
In carcinoma of the papilla of Vater, lymph node metastases
Friess H, Wang L, Zhu ZW, et al: Growth factor receptors are differentially expressed in cancers of the papilla of Vater and pancreas.
www.jco.org /cgi/content/full/19/9/2422   (4987 words)

  
 Control of Hair Growth
Dermal papilla cells and some cells of the inner and outer sheaths of the follicle from androgen-dependent hairs have androgen receptors in their cytoplasm and nucleus.
On the other hand, the secretory activity of the dermal papilla is controlled either by substances produced in cells of the spinous layer of the outer root sheath or by hormones.
Cells of the dermal papilla synthesize and secrete cytokines which control growth and differentiation of hair matrix cells.[25,26,27,28] In most hair the released cytokines stimulate matrix cell division and differentiation, however for hair of the parietal region the cytokines act as inhibitors, leading to follicle atrophy.
dermatology.cdlib.org /DOJvol4num1/original/jankovi.html   (3038 words)

  
 [No title]
The process by which implanted cultured dermal papilla cells would induce hair growth is conceptually similar to what happens during fetal development of the hair follicle and the normal anagen phase of the growth cycle (Figure 3).
However, the dermal papilla may not be the ideal candidate and the most recent report by Jahoda showed that cultured dermal papilla failed to induce follicle formation in a wound model.
The limitation of carrying papilla cells through multiple passages could be a major obstacle for the development of a treatment for hair loss.
www.drkiely.com /advances/hairfolliclecloning.html   (1732 words)

  
 SSAT - 1997 Abstract: 46 Cancer of papilla of Vater: RER+ phenotype is associated with good prognosis.   (Site not responding. Last check: 2007-10-17)
Cancer of papilla of Vater: RER+ phenotype is associated with good prognosis.
Cancer of the papilla of Vater may be cured by surgery alone in up to 40% patients.
During our studies aimed to clarify the molecular pathogenesis of cancers of the papilla of Vater, we noticed that genomic instability, of the type seen in replication error-phenotype (RER+) cancers, was associated with good outcome after pancreaticoduodenectomy.
www.ssat.com /cgi-bin/abstracts/97ddw/ddw46.cgi?affiliation=   (443 words)

  
 MUSC Digestive Disease Center - Case Studies
The major papilla is normal endoscopically, however there is bulbous protrusion of the minor papilla suggestive of a santorinicele.
Cannulation of the accessory papilla and opacification of the dorsal duct system is required to confirm the diagnosis and exclude other anomalies such as congenital short pancreas.
Accessory papilla sphinterotomy was beneficial in the majority of patients with recurrent acute pancreatitis and those with chronic pancreatitis, but did not benefit the majority of patients with pain only.
www.ddc.musc.edu /ddc_pro/pro_development/case_studies/case013.htm   (665 words)

  
 Mechanical Properties of the Basilar Papilla of Alligator Lizard
The present study examines the contribution of the basilar papilla to the mechanical properties of the alligator lizard cochlea.
The image in the background shows the papilla (note that the neural and abneural sides are reversed relative to the previous view; that is, the abneural side is now on the left).
Elliptical motion of the papilla cannot result from the simple rotation assumed by models of the alligator lizard cochlea; the trajectories resulting from pure rotation are simple arcs.
umech.mit.edu /aja/posters/aro01/aro01.html   (2941 words)

  
 Inhibition of Hair Growth by Testosterone in the Presence of Dermal Papilla Cells from the Frontal Bald Scalp of the ...
a, bald frontal dermal papilla from the postpubertal macaque; b, occipital dermal papilla from the postpubertal macaque; c, prebald frontal dermal papilla from the prepubertal macaque; d, occipital dermal papilla from the prepubertal macaque.
RU 58841 (17), was dissolved in ethanol and diluted with KGM
Oliver RF 1969 Regeneration of the dermal papilla and its influence on whisker growth.
endo.endojournals.org /cgi/content/full/138/1/356   (3790 words)

  
 Chapter 8, Slide 18   (Site not responding. Last check: 2007-10-17)
Mushroom-shaped papilla called fungiform papilla possess taste buds (onion-shaped groupings of sensory cells) on their dorsal surface.
The epithelium overlying the sensory papillae is generally nonkeratinized or very lightly keratinized.
The fungiform papilla are dispersed over the anterior region of the dorsal tongue; perceive sweet, salty and sour; and are innervated by the seventh cranial nerve.
dentistry.ouhsc.edu /intranet-web/Courses/CELL8002/Chapter8/8.18.html   (56 words)

  
 SSAT - 2000 Abstract: 2312: Laparoscopic Transduodenal Sphincteroplasty of the Minor Papilla.   (Site not responding. Last check: 2007-10-17)
For patients with recurrent pancreatitis and pain caused by pancreas divisum and stenosis of the minor papilla, transduodenal sphincteroplasty of the minor papilla can reduce the incidence of recurrent pancreatitis and pain.
The laparoscopic technique included 1) a lateral duodenotomy, 2) identification of the minor papilla, 3) opening the minor papilla widely, 4) laparoscopic suturing of the mucosa of the duct of Santorini to the duodenal mucosa, and 5) closure of the duodenum.
In 4 patients, Secretin was available to facilitate identification of the minor papilla, but in two patients it was not.
www.ssat.com /cgi-bin/abstracts/00ddw/2312.cgi?affiliation=other   (423 words)

  
 [No title]   (Site not responding. Last check: 2007-10-17)
Papilla based incision- a shallow first incision at the base of the papilla and a second incision directed to the crestal bone creating a split thickness in the area of the papilla base (Velvert 2002).
With each patient both the PBI on one papilla and the horizontal incision in the other papilla for complete mobilization were done.
The PBI were sutured with 2-3 polypropylene 7/0 interrupted sutures depending on the width of the papilla.
www.dental.ufl.edu /Offices/Endo/S04_08.doc   (2545 words)

  
 the Gastrolab IMAGE Gallery: Papilla Vater
Papilla of Vater is the opening of the bile duct and panceatic duct in the descending part of the duodenum.
Through the papilla, bile and pancreatic juice pass to to bowel.
During an ERCP-examination, the papilla is cannulated and the bile ducts and pancreatic ducts are filled with contrast medium.
www.gastrolab.net /ng012.htm   (143 words)

  
 Transfection of rat dermal papilla cells with a gene encoding a temperature-sensitive polyomavirus large T antigen ...
Transfection of rat dermal papilla cells with a gene encoding a temperature-sensitive polyomavirus large T antigen generates cell lines retaining a differentiated phenotype -- Filsell et al.
Transfection of rat dermal papilla cells with a gene encoding a temperature-sensitive polyomavirus large T antigen generates cell lines retaining a differentiated phenotype
The dermal papilla is a discrete group of cells at the base of the hair
jcs.biologists.org /cgi/content/abstract/107/7/1761   (392 words)

  
 Hair Cloning - Why its Not Working
By analyzing follicles in different stages of the hair growth cycle, they found that the dermal papilla structure is filled with cells that have migrated from an adjacent structure around the hair follicle called the “dermal sheath”.
If at the end of each growth cycle the dermal papilla cells migrate away from the follicle never to return, then the dermal papilla structure may get progressively smaller with each growth cycle - but this is a story for another time.
The size of the dermal papilla is known to directly dictate the size of the hair fiber produced.
www.hairlosstalk.com /newsletter/modules.php?op=modload&name=News&file=article&sid=241   (1031 words)

  
 Food entrapped in papilla of Vater: uncommon cause of vomiting -- Falchetti et al. 82 (6): 488 -- Archives of Disease ...
There are sporadic reports of foreign bodies retained into the papilla of Vater, all of them in adults.
It was pivoting, partially embedded in the papilla of Vater.
Reports of a swallowed foreign body embedded in the papilla of Vater are exceedingly rare and all are in adults,
adc.bmjjournals.com /cgi/content/full/82/6/488   (616 words)

  
 In Vivo Regulation of MAP Kinases in Ratus norvegicus Renal Papilla by Water Loading and Restriction -- Wojtaszek et ...
Activity is presented as a percentage of the activity observed in papilla of water ad libitum control rats.
ERKs, the activity of p38 MAPK is increased in the papillae of
HSP expression in papilla and cortex of rats either water restricted (thirst), given water ad libitum (control), or water loaded due to consumption of 5% dextrose (D5W).
www.jci.org /cgi/content/full/102/10/1874   (4948 words)

  
 Pattern Formation in the Basilar Papilla: Evidence for Cell Rearrangement -- Goodyear and Richardson 17 (16): 6289 -- ...
The avian basilar papilla is composed of hair and supporting cells arranged in a regular pattern in which the hair cells are
The simplicity of the basilar papilla relative to its mammalian
Pairs of contacting hair cells are seen throughout the basilar papilla at E8 but decrease in frequency thereafter.
www.jneurosci.org /cgi/content/full/17/16/6289   (6841 words)

  
 Science in the box - Publications Details
Following treatment of the isolated dermal papilla with collagenase, incubation in Chang's medium mediates accelerated growth of the papilla cells when compared with other media such as DMEM, M199, and EMEM.
Type III collagen and keratan sulfate are poorly expressed by the papilla both in situ and in vitro.
Heparan sulfate proteoglycan, a matrix component of the papilla in situ, is poorly expressed in vitro.
www.scienceinthebox.com /cgi-bin/en_UK/searchresult_multiple_en.pl?elements=686   (266 words)

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