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Using the latest in molecular microarray technologies, the researchers examined one affected mother and son and two sporadic BOFS cases and found a small deletion on chromosome 6 in the mother and son. Sequencing of genes in this candidate region revealed missense mutations clustered in the basic region of the DNA-binding domain of the TFAP2A gene in 4 sporadic BOFS patients.

According to lead author Jeff Milunsky, MD, director of clinical genetics, associate director of the Center for Human Genetics, and an associate professor of pediatrics, genetics and genomics at BUSM, this discovery will lead to more precise diagnostic testing, enable prenatal diagnosis, suggest directions for new research, and facilitate genetic counseling in these families.

“This gene is a well-known transcription factor involved in multiple developmental pathways as well as tumorigenesis. An intriguing finding is that one of the affected patients with a mutation also has brain cancer, highlighting again the connection between malformations and cancer,” he added. Milunsky believes this discovery may have significant wide-ranging implications as this gene may also play a role in the more common isolated occurrence of cleft lip and palate.

The study currently appears on-line in the April 17th issue of the American Journal of Human Genetics.

Guest Editors Robert M. Reece, Desmond K. Runyan, and Ronald G. Barr and an international group of authors significantly contribute to the increasing visibility of violence against children in general and child maltreatment in particular. They state that although prevention has been a highly desired but elusive goal in the field of child abuse, the apparent potential for prevention of inflicted childhood neurotrauma in particular through universal educational initiatives, both in North America and potentially around the world, has contributed considerable urgency to the importance of addressing these challenges. The symposium participants who convened to address these measurement issues were very cognizant of these challenges.

Presentations addressed two main themes: (1) the adequacy of current and/or projected systems for measuring the incidence of shaken baby syndrome; and (2) a review of available strategies for evaluating the effectiveness of primary programs for its prevention in large jurisdictions.

Reece addressed the complex issue of nomenclature variants and how they might (or might not) be integrated. Runyan described the challenges and emerging evidence concerning rates of the caregiving risk behavior of shaking. Keenan, Minns and Trent described their experiences with active and passive surveillance systems. Bennett described the countrywide Canadian Pediatric Surveillance Program, and Ryan described the design and proposed use of the Department of Defense Birth and Infant Health Registry to measure inflicted childhood neurotrauma.

To assess strategies for evaluating the effectiveness of prevention programs in large jurisdictions, Rivara presented the strengths, weaknesses, and potential pitfalls of available designs applicable at a jurisdictional level, and Shapiro discussed whether case control designs used successfully in disease prevention research could be applied to SBS. Finally, Ellingson, Leventhal, and Weiss described comparative rates derived from retrospective passive surveillance data sets to those derived from prospective active surveillance studies, and Runyan, Berger and Barr provide an integrative proposal for the “ideal system” to measure inflicted neurotrauma incidence.

Writing in the supplement, Guest Editors Ronald G. Barr, University of British Columbia, Vancouver, and Child & Family Research Institute, and Desmond K. Runyan, The University of North Caroline, Chapel Hill, state, “…it is apparent that there is a ‘bad news/good news’ storyline emerging here. While the challenges to measuring inflicted injury are real and considerable, it is equally clear that considerable progress has been made and that reliable and valid measurement appears feasible and obtainable. Substantive work continues to be done toward providing reasonable measures that will be informative both about the nature and scope of inflicted neurotrauma in infants and about the possibility that prevention programs will be able to be demonstrated to be effective (or not) on the basis of empiric measurements. It is none too soon.”

These articles appear in a Special Supplement to the American Journal of Preventive Medicine, Volume 34, Issue 4 (April 2008), Supplement 1, published by Elsevier.

The Symposium was supported by the Doris Duke Charitable Foundation of New York and the Centers for Disease Control and Prevention (CDC). The Supplement was supported by the Division of Violence Prevention, National Center for Injury Prevention and Control (NCIPC) at the CDC, Atlanta.

Dry eye syndrome is one of the most common problems treated by eye physicians. Affecting more than 10 million Americans, it is caused by problems with the tear film responsible for lubricating the eye. While it does not cause vision loss, dry eye syndrome can be painful and severely decrease quality of life for its victims who constantly search for relief with artificial tears and other medications.

LASIK surgery uses small laser cuts to reshape the surface of the cornea, eliminating far-sightedness or near-sightedness, and the need for glasses or contacts. Many people choose LASIK for cosmetic reasons. In recent years, thousands of military personnel have opted for LASIK surgery because it can help them see better and identify objects and people in the field more quickly. It also relieves them of the worry about lost or damaged glasses.

Usually, LASIK causes some dry eye syndrome directly after surgery, but the condition resolves within a few months. In a small number of cases, however, the dry eye condition following LASIK can become chronic and impact functioning of both civilian and military individuals for as long as nine months following surgery.

Dartt and her team were determined to find a way to prescreen for the chronic condition so that surgeons could prepare patients in advance with preventative artificial tears or opt against surgery for some patients.

Dartt and her team evaluated the eyes of 24 patients about to undergo LASIK at the Massachusetts Eye and Ear Infirmary. The patients were given a series of evaluations, including the Schirmer test with and without anesthesia, before and after surgery. Using a piece of paper on the corneal surface, the Schirmer test measures the amount of tears an eye is producing. Study subjects also filled out a dry eye questionnaire indicating their experience with dry eyes pre- and post-operatively.

The team discovered that if a patient had a presurgical tear production value greater than 20 mm of wetting of the Schrimer strip in 5 minutes, they were not likely to develop chronic dry eye syndrome. Patients who produced less tears were more likely to develop long-term dry eye syndrome.

According to Dartt, the next steps for her team include expanding this study to a larger number of individuals and examining patients who have the PRK (photorefractive keratectomy) type of refractive surgery. The PRK has the same goal as LASIK, but the procedures differ. In LASIK a flap of corneal epithelium is cut and lifted to allow the underlying stroma to be shaped by the laser. Then the flap is placed down on the eye. In PRK the corneal epithelium is mechanically removed to allow laser shaping of the stroma. The epithelium then grows back over several days. LASIK and PRK have different side effects.

Authors of the study included Keiko Konomi, Li-Li Chen,Rachel S. Tarko, Amy Scally, Debra A. Schaumberg, Dimitri Azar, and Darlene A. Dartt

Schepens Eye Research Institute is an affiliate of Harvard Medical School and the largest independent eye research institute in the nation.

Source:

The University of Washington researchers, led by Alan Weiner, had been investigating the normal function of the CSB gene when co-author John Newman stumbled across hints that the human CSB gene harbored a previously unsuspected guest. The guest was a “domesticated” PiggyBac transposon — a formerly selfish “jumping gene” that had settled into the CSB gene over 40 million years ago before marmosets diverged from humans.

As a result, the CSB gene began making two equally abundant products — the normal CSB protein, and a fusion protein in which the beginning of the CSB protein was fused to the DNA transposase encoded by the PiggyBac element. Interestingly, the fusion protein continued to be expressed in almost all CS patients, but not in the individual who was unaffected by a complete loss of the CSB protein.

The conserved fusion protein is clearly advantageous for the human species in the presence of the CSB protein, but potentially devastating for individuals in the absence of the CSB protein. As Newman remarks, “The discovery of the fusion protein complicates an already complicated situation. Now we have a whole new set of questions to answer.”

Source: Public Library of Science

Th17 cells produce a protein called interleukin-17 (IL-17) and are known to play a major role in protection against invading pathogens. They are critical for recruiting other microbe-fighting immune cells called neutrophils to the site of infection. The study, which included 13 patients diagnosed with Job’s syndrome, revealed that Th17 cells were lacking in these patients. This is also the first demonstration of a human genetic disease where researchers have not been able to generate Th17 cells in laboratory experiments using blood samples from patients with Job’s syndrome.

The new findings strongly suggests that Th17 cells are important in the control of Staphylococcus bacteria and certain fungal infections and the research has the potential to uncover why certain people who do not have Job’s syndrome are prone to Staphylococcus and other fungal infections.

Although only 250 cases of Job’s syndrome have been reported since the disease was first described in 1966, NIH scientists have been studying the disease for 30 years. In September 2007, NIAID issued a press release about the first major breakthrough. NIAID scientists and their colleagues had discovered a mutation in the gene that makes a specific protein known to help alert and direct immune system responses to stop invading pathogens. The proteins coded by this gene are called signal transducer and activator of transcription 3 (STAT3).

With the current study, a team led by Daniel Douek, M.D., Ph.D., chief of the Human Immunology Section of the NIAID Vaccine Research Center, the research was carried a step further based on the knowledge that the gene that makes STAT3 is involved in the differentiation of Th17 cells. The researchers hypothesized that Job’s patients may be lacking Th17 cells and that the absence of these cells may contribute to the immune deficiency that results in recurrence of particular types of infections characteristic to Job’s syndrome. The research study, which included 13 patients diagnosed with Job’s syndrome, revealed that Th17 cells were lacking in these patients, while 10 healthy controls and also seven patients who had some Job’s-like symptoms, but no mutation in STAT3, had the Th17 cells.

It is known that patients with Job’s syndrome (technically known as hyperimmunoglobulin E syndrome, or HIES) have an elevated level of immunoglobulin E (IgE) antibodies and it is not clear to researchers why these people have high levels of IgE. Researchers say a future research study will likely explore the relationship between Th17 cells and the level of IgE antibodies and find out if the absence of Th17 cells in Job’s patients disrupts the immune system in a way that raises the level of these antibodies.

In conclusion, the investigators note that their research provides useful insights into why Job’s syndrome patients are so susceptible to repeated infections with fungus and Staphylococcus bacteria and documents the roles of STAT3 and IL-17 in humans.

The head of the Australian Rett Syndrome Study based at the Institute, Dr Helen Leonard, said the results had important implications for the care of girls with the syndrome.

“Many of the girls had fractures of the femur which are particularly disabling given the limited mobility of many of these children,” Dr Leonard said.

“This information will be important for doctors and for families in both identifying fractures and endeavouring to find ways to prevent them where possible.”

Dr Leonard said the study had found that girls with epilepsy and more severe forms of Rett syndrome were more likely to suffer fractures.

“Our next step will be to try to identify the mechanism that is making the girls more susceptible to fractures which will include looking at the effect of the specific gene that’s responsible for the syndrome and also the impact of the drug therapies used for epilepsy,” Dr Leonard said.

“The high incidence of fracture impacts on the quality of life, care needs and outcomes for this group and their families. We have shown previously that having a child with a fracture impacts in a negative way on the mother’s mental health status.”

Source:Research Australia Via Eurekalert

Of most concern to the parents in the study were firstborns’ independence, time spent together and role patterns. The study found that generally fathers and mothers reported similar changes in the parent-child relationship during their child’s movements into young adulthood. Both fathers and mothers reported differences in independence/maturity of the child, closeness/openness in the relationship, contact/time spent together and changes in role pattern.

Another change reported by parents was relating more like peers and having more adult-like interactions with their young adult child than in prior years. Other parents reported acting more like a mentor and giving advice to their children rather than demands.

Some of the things that remained the same in the parent-child relationship were providing financial assistance and continuing to be a mentor to their young adult child. Few parents in the study reported changes in emotional support to the children.

“The within-family analysis suggests that mothers and fathers in the same families in our study rarely reported divergent experiences with their young adult sons and daughters,” Proulx said. “Overwhelmingly, the examination of mothers’ and fathers’ responses revealed similarities in mothers’ and fathers’ experiences as parents to their young adult child.”

The study interviewed 142 sets of parents with firstborn young adult sons and daughters and was published in the Journal of Family Issues.

Source:University of Missouri-Columbia.

The condition affects well more than 10 million people, primarily women, in the United States alone and can often lead to problems with activities such as reading and driving. Dry eye syndrome is also one of the most common conditions for which patients see eye care. Unfortunately, treatment options are quite limited in terms of both efficacy and undesirable side-effects.

The study tested three formulations of fatty acids: 0.2 percent alpha-linolenic acid (an omega-3 fatty acid) ; 0.2 percent linoleic acid (an omega-6 fatty acid) ; and 0.1 percent alpha-linolenic acid combined with 0.1 percent linoleic acid. An eye drop containing each of the three formulations was applied topically to the eye of a mouse once daily. An untreated group did not receive eye drops. Signs of dry eye were then measured 24 hours after the last dose. Eyes treated with ALA showed a significant reversal in epithelial damage to the cornea, the transparent dome that covers the pupil. Results show a beneficial effect of the topical application of ALA in reversing the signs of dry eye syndrome as well as the inflammatory changes seen in dry eye syndrome.

“The current study for the first time demonstrates the benefit of topical application of a particular fatty acid in treating the signs of dry eye syndrome at both the molecular and cellular levels. Using topical formulations of fatty acids to treat dry eye would allow for more flexibility for treatment, including lessening side effects that patients can experience from oral intake of fatty acids. Clinical studies with topical fatty acids are being planned, which if successful could alter the method by which this common condition is treated,” said Dr. Dana.

The study will be published in the February 2008 issue of Archives of Ophthalmology. This research was supported by grants from Johnson and Johnson Vision Care, Inc., and the Sjogren’s Syndrome Foundation.

Source:Harvard Medical School