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Severity of Facial Wrinkles May Help Predict Bone Mineral Status


 

THE ANNUAL MEETING OF THE ENDOCRINE SOCIETY

BOSTON – Skin wrinkling and rigidity could give physicians a clue to bone mineral density, at least among early postmenopausal women, based on a study presented as a poster at the annual meeting of the Endocrine Society.

"In the women that we’re talking about, skin wrinkling and skin rigidity – features that are easily appreciable across the table when you are looking at the patient – tie in with bone mineral density as assessed by clinical gold standards, such a as dual x-ray absorptiometry," Dr. Lubna Pal said during a press conference at the meeting.

The researchers explored possible relationships between skin wrinkling/rigidity and bone mineral density (BMD) in a cohort of early menopausal women who were enrolled in the Kronos Early Estrogen Prevention Study, a longitudinal trial of menopausal hormone therapy.

The skin ancillary study to the ongoing Kronos clinical trial included 114 women who had their last menstrual period within the past 3 years. Most of the participants were white, although 30% were not. Cross-sectional baseline data were used, said Dr. Pal, who is a reproductive endocrinologist at Yale University, New Haven, Conn.

Skin wrinkles were assessed at 11 sites on the face and neck using the validated Lemperle wrinkle scale. Skin rigidity was assessed at the forehead and cheek using a durometer. Participants also underwent BMD assessment by dual energy x-ray absorptiometry at the lumbar spine, left hip, and total body. The patients also underwent quantitative heel ultrasound.

Stepwise multivariable linear regression analyses explored the relationship between skin parameters and BMD. Covariates included age, body mass, race/ethnicity, age at menopause, history of smoking, multivitamins intake, and enrollment site.

The researchers found that skin wrinkle severity correlates with BMD. In particular, when wrinkles are severe, BMD is low.

"Our hypothesis, I’m very pleased to say, was substantiated by these findings," said Dr. Pal. "But we are really seeing the tip of the iceberg here. This is a tantalizing association.

"The quest for all of us really is, can we pick out markers in a cost-effective manner that may translate into overall risk detection that would prevent [fractures]?" she added.

Why look at skin wrinkles and bone density? "Well, when you look at the architecture of the skeleton and the architecture of the skin, about 90% of shared properties within tissues exist, which are the protein building blocks," Dr. Pal said.

In the skeleton, bone mineral must be deposited on some struts, and proteins provide that infrastructure, she explained. So, loss of protein in the skeleton translates into increased skeletal fragility. That structural deterioration is also seen in the skin. "As we age, the protein texture in our dermis and the deeper layers of our skin also deteriorate," Dr. Pal noted.

The women in the study are being followed longitudinally. Thus, the researchers may be able to answer questions such as whether more wrinkles are associated with a faster rate of bone loss and whether estrogen therapy has an effect on such a relationship, Dr. Pal said.

Dr. Pal and her coinvestigators reported that they have no relevant financial relationships.

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