University Medical Center Groningen treats first cancer patient with stem cells from his own salivary gland

Source: www.taylordailypress.net Author: Braeden Haige On Thursday December 15, the surgery on Casper van den Noort (43 years old) was the first of its kind in the Netherlands and may have been the first to obtain his own cells from cultured miniature salivary glands (organelles) after many years of research. The stem cell transplant should ensure that van den Noort will no longer suffer from dry mouth as a result of his treatment for tongue tumor. Van den Noort spoke of a private moment. “The injections were a little sensitive. I am of course very curious to see what happens next, and whether this will have the intended effect. It would be really nice if that salivary gland could start working again.” Low quality of life In the Netherlands there are around 2,500 new patients each year with a tumor in the head and neck region. Many of these patients have a good chance of recovery after radiation. A serious complication is that in 40 percent of patients, the salivary glands no longer function properly after treatment. As a result, patients constantly suffer from dry mouth. Chewing and swallowing is difficult, sense of taste is reduced, speech is very difficult, and teeth are damaged. As a result, these patients often experience a significantly reduced quality of life. A tumor on the tongue was found earlier this year in Van den Noort. During his operation at UMCG, part of his salivary glands were removed. “We’ve grown stem cells from this in [...]

2022-12-19T11:13:28-07:00December, 2022|Oral Cancer News|

Risk factors for positive surgical margins in salivary gland cancers

Source: www.physiciansweekly.com Author: Craig Bollig, MD An analysis of patients with salivary gland cancers shows that risk factors for positive surgical margins include age, tumor stage, and treatment center. “Salivary gland cancers are rare malignancies in the oropharynx that are primarily treated with surgery because they are relatively resistant to other therapies, such as radiation, chemotherapy, and immunotherapy,” Craig Bollig, MD, explains. “Surgical margins have been associated with cancer recurrence rates and survival in previous studies. However, because these tumors are so rare, there was not much information on risk factors for positive margins in this population prior to this study. Additionally, one of my primary clinical interests is transoral robotic surgery (TORS), which involves using a surgical robot to remove tumors located deep in the throat in a minimally invasive fashion through a patient’s mouth.” According to Dr. Bollig, previous research on the use of TORS in this population was limited, as were data on whether it was associated with similar positive margin rates compared with traditional surgical approaches. For a study published in American Journal of Otolaryngology—Head and Neck Medicine and Surgery, Dr. Bollig and colleagues obtained data from the National Cancer Database on patients with oropharyngeal salivary gland malignancies (OPSGM) from clinical T stages 1 to 4a who underwent surgical resection between 2010 and 2017. The researchers analyzed risk factors for positive surgical margins (PSM) using logistic regression and overall survival (OS) using Kaplan-Meier and Cox proportional hazards models. “Our objectives were to determine the clinical factors [...]

2022-09-06T09:55:57-07:00September, 2022|Oral Cancer News|

Cancer biology graduate student travels ‘ROCKy’ road toward a cure for post-radiation dry mouth

Source: medicalxpress.com Author: staff, University of Arizona The United States is in the midst of a head-and-neck cancer epidemic. Although survival rates are relatively high—after treatment with chemotherapy and radiation—survivors can suffer permanent loss of salivary function, potentially leading to decades of health problems and difficulties eating. It is unknown why the salivary gland sometimes cannot heal after radiation damage, but Wen Yu "Amy" Wong, BS, a University of Arizona cancer biology graduate student, may have taken a step toward solving that riddle. Radiation often comes with long-term or even permanent side effects. With a head-and-neck tumor in radiation's crosshairs, the salivary gland might suffer collateral damage. "When you get radiation therapy, you end up targeting your salivary glands as well," Wong said. Losing the ability to salivate predisposes patients to oral complications and an overall decrease in their quality of life. "Salivary glands help you digest food, lubricate your mouth and fight against bacteria. After radiation, patients could choke on their food because they can't swallow. They wake up in the middle of the night because their mouth is so dry. They often get cavities." Favorite foods may lose their flavor. "Saliva produces certain ions that help you taste," she said. "Patients lose the ability to enjoy food. The best steak is very bland to them." The quest to restore salivary function in post-radiation head-and-neck cancer patients starts with learning why the salivary gland is unable to heal itself after radiation damage. Wong's study may have helped to unravel [...]

First gene therapy study in human salivary gland shows promise

Source: National Institutes of Health (NIH) Date: Monday, November 5, 2012 Gene therapy can be performed safely in the human salivary gland, according to scientists at the National Institute of Dental and Craniofacial Research (NIDCR), part of the National Institutes of Health. This finding comes from the first-ever safety, or Phase I, clinical study of gene therapy in a human salivary gland. Its results, published this week in the Proceedings of the National Academy of Sciences, also show that the transferred gene, Aquaporin-1, has great potential to help head and neck cancer survivors who battle with chronic dry mouth. Aquaporin-1 encodes a protein that naturally forms pore-like water channels in the membranes of cells to help move fluid, such as occurs when salivary gland cells secrete saliva into the mouth. These initial results clear the way for additional gene therapy studies in the salivary glands. Although sometimes overlooked, salivary glands present an ideal target for gene therapy. They are easily accessible and, once a gene is introduced, it has no obvious escape route into the bloodstream, where it can have unintended consequences. “You cannot imagine how fulfilling it is to jot down an idea on a napkin in 1991 and then see it enter a clinical trial and help people.,” said Bruce Baum, D.M.D., Ph.D., lead author on the study and recently retired NIDCR scientist who spent the last 21 years moving gene therapy in the salivary glands from the research bench to the clinic. “Can a scientist ask for anything [...]

2012-11-06T14:45:46-07:00November, 2012|Oral Cancer News|

Stem cell sparing radiotherapy for head and neck cancer may avoid salivary gland damage

Source: European Society for Radiotherapy and Oncology (ESTRO) Barcelona, Spain: Researchers believe they may have found a way to avoid damaging salivary glands during radiotherapy treatment for head and neck cancer – a discovery that could improve the quality of life of 500,000 patients a year worldwide with the disease. Presenting their findings to the 31st conference of the European Society for Radiotherapy and Oncology (ESTRO31) [1], the researchers said that they had discovered that the stem cells essential for regenerating the parotid gland (the largest pair of salivary glands) were located mainly in its major ducts, and that these could easily be avoided during radiotherapy or given a minimal radiation dose. "This would significantly reduce complications arising from radiotherapy for head and neck cancer," said Dr Peter van Luijk, a research associate at the University Medical Center Groningen, The Netherlands. Around 40% of patients treated for head and neck cancer suffer from the distressing side-effects of dry mouth syndrome – a condition that can occur when the parotid gland stops working properly after radiation damage. This causes problems with eating, sleeping, speech, tooth loss and oral hygiene, leading to diminished quality of life, social isolation and difficulty in continuing work. Attempts to treat dry mouth syndrome and its consequences can cost hundreds or even thousands of Euros per patient per year and are mostly insufficient. Dr van Luijk said: "Parotid gland dysfunction after radiotherapy for head and neck cancer was, and still is, a major clinical problem. During radiotherapy, attempts [...]

2012-05-10T09:41:29-07:00May, 2012|Oral Cancer News|

Beastie Boys Co-Founder Adam Yauch Dead at 47

Source: Rolling Stone Magaznie Adam Yauch, one-third of the pioneering hip-hop group the Beastie Boys, has died at the age of 47, Rolling Stone has learned. Yauch, also known as MCA, had been in treatment for cancer since 2009. The rapper was diagnosed in 2009 after discovering a tumor in his salivary gland. "It is with great sadness that we confirm that musician, rapper, activist and director Adam 'MCA' Yauch, founding member of Beastie Boys and also of the Milarepa Foundation that produced the Tibetan Freedom Concert benefits, and film production and distribution company Oscilloscope Laboratories, passed away in his native New York City this morning after a near-three-year battle with cancer," reads an official statement from the Beastie Boys. "He was 47 years old." Yauch sat out the Beastie Boys' induction to the Rock and Roll Hall of Fame in April, and his treatments delayed the release of the group's most recent album, Hot Sauce Committee, Pt. 2. The Beastie Boys had not performed live since the summer of 2009, and Yauch's illness prevented the group from appearing in music videos for Hot Sauce Committee, Pt. 2. Yauch co-founded the Beastie Boys with Mike "Mike D" Diamond and Adam "Ad-Rock" Horovitz in 1979. The band started off as a hardcore punk group, but soon began experimenting with hip-hop. The band broke huge with their first proper album, Licensed to Ill, in 1986; it was the biggest-selling rap album of the decade and the first to reach Number One on [...]

2012-05-07T14:59:10-07:00May, 2012|Oral Cancer News|

Nutritional sciences investigator wins NIH challenge grant

Source: uanews.org (University of Arizona) Author: Jeff Harrison Kirsten Limesand's research focuses on how to restore salivary gland function in cancer patients. Each year approximately 40,000 people in the U.S. are diagnosed with some form of head and neck cancer. The majority of those patients will have surgery to remove the tumors, followed by one or more rounds of radiation therapy to kill any lingering cancer cells. A common side effect of radiation to this area is damage to the adjacent, normal salivary glands. Patients commonly experience a dry mouth that can lead to oral sores and infections, cavities, difficulty chewing and swallowing food and loss of taste. Kirsten Limesand, an assistant professor of nutritional sciences in the University of Arizona College of Agriculture and Life Sciences, has received a two-year NIH Challenge Grant worth nearly $1 million to study this problem. Specifically, Limesand is examining the role of autophagy in salivary glands in response to radiation therapy. Autophagy is an ongoing process where cells digest and recycle their proteins and organelles. This helps starving cells break down and redirect components from non-essential to essential cell functions. The process and the mechanics behind it are not well understood, but autophagy appears to have some role in preventing and fighting disease and infection. It also, in some cases, could make those problems worse. Side effects from radiation therapy begin within a few days and can continue for one to two years. Because saliva is essential for maintaining oral health, salivary gland [...]

Incidence of carcinoma of the major salivary glands according to the WHO classification, 1992 to 2006: a population-based study in the United States

Source: CEBP.com Author: Staff Requests for reprints: Graça M. Dores, Medical Service (111), Department of Veterans Affairs Medical Center, 921 North East 13th Street, Oklahoma City, OK 73104. Phone: 405-456-3325. E-mail: [email protected] Abstract Background: Carcinomas of the major salivary glands (M-SGC) comprise a morphologically diverse group of rare tumors of largely unknown cause. To gain insight into etiology, we evaluated incidence of M-SGC using the WHO classification schema (WHO-2005). Methods: We calculated age-adjusted incidence rates (IR) and IR ratios (IRR) for M-SGC diagnosed between 1992 and 2006 in the Surveillance, Epidemiology and End Results Program. Results: Overall, 6,391 M-SGC (IR, 11.95/1,000,000 person-years) were diagnosed during 1992 to 2006. Nearly 85% of cases (n = 5,370; IR, 10.00) were encompassed within WHO-2005, and among these, males had higher IRs than females [IRR, 1.51; 95% confidence interval (95% CI), 1.43-1.60]. Squamous cell (IR, 3.44) and mucoepidermoid (IR, 3.23) carcinomas occurred most frequently among males, whereas mucoepidermoid (IR, 2.67), acinic cell (IR, 1.57), and adenoid cystic (IR, 1.40) carcinomas were most common among females. Mucoepidermoid, acinic cell, and adenoid cystic carcinomas predominated in females through age ∼50 years; thereafter, IRs of acinic cell and adenoid cystic carcinomas were nearly equal among females and males, whereas IRs of mucoepidermoid carcinoma among males exceeded IRs among females (IRR, 1.57; 95% CI, 1.38-1.78). Except for mucoepidermoid and adenoid cystic carcinomas, which occurred equally among all races, other subtypes had significantly lower incidence among Blacks and Asians/Pacific Islanders than among Whites. Adenoid cystic carcinoma occurred equally in [...]

2009-11-09T13:55:37-07:00November, 2009|Oral Cancer News|

Israeli study sees link between oral cancer, cell phones

Source: haaretz.com Author: Dan Even A recent study documents a sharp rise in the incidence of salivary gland cancer in Israel that researchers believe may be linked to the use of mobile phones. The study was commissioned by the Israel Dental Association and directed by Avi Zini of the community dentistry department at the Hebrew University-Hadassah School of Dental Medicine. The study included examination of the incidence of oral cavity cancers in Israel from 1970 to 2006. Among salivary gland cancer cases, researchers found a worrying rise in the number of cases of malignant growth in parotid glands - the salivary gland located under the ear, near the location where cell phones are held during conversations. By contrast, the incidence of salivary cancers in glands of the lower mouth - the so-called submandular and sublingual salivary glands - remained stable. From 1980-2002 the number of cases of parotid salivary cancer held steady at around 25 per year. The number of cases rose dramatically in the five years after to 70 cases per year. "We haven't gathered data on the use of cell phones on the part of the patients," Zini said, "but the rise [in cancer cases] absolutely could indicate increased exposure to cellular telephones and damage caused by radiation." The researchers intend to collect data on their oral cancer patients' cell phone use during the next stage of the study to examine the possible statistical link between the two. Of the 11,843 Israelis who developed oral cancers during the [...]

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