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In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
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Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
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Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are...
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Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
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Renal function in familial longevity: the Leiden Longevity Study.

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Middle-aged men with a family history of longevity show better kidney function (estimated glomerular filtration rate) than controls. This improved renal function is particularly notable in men with prior cardiovascular disease.

Keywords:
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Area of Science:

  • Nephrology
  • Gerontology
  • Genetics

Background:

  • Understanding mechanisms of age-related renal function decline is crucial.
  • Familial longevity studies offer insights into protective factors against aging.
  • Renal function assessment is key in evaluating healthspan and lifespan.

Purpose of the Study:

  • To investigate renal function in middle-aged individuals with a familial propensity for longevity.
  • To compare estimated glomerular filtration rate (eGFR) between offspring of long-lived families and matched controls.
  • To identify sex-specific differences in renal function related to longevity predisposition.

Main Methods:

  • The Leiden Longevity Study cohort was utilized, including offspring of non-agenarian siblings and controls.
  • Lifestyle, medical history, and medication use were collected.
  • Renal function was assessed using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) formula for eGFR.
  • Linear mixed models were employed, with analyses stratified by sex.

Main Results:

  • No significant difference in eGFR was observed between female offspring and controls (p=0.54).
  • Male offspring exhibited a higher eGFR compared to male controls (p=0.022), a finding robust to further adjustments.
  • Among men with a history of hypertension or cardiovascular events, offspring showed significantly higher eGFR (p=0.002 and p=0.033, respectively).

Conclusions:

  • Middle-aged men predisposed to longevity demonstrate superior renal function compared to controls.
  • This enhanced renal function in men is particularly evident in those with a history of cardiovascular disease.
  • Sex-specific differences suggest distinct longevity-related mechanisms influencing renal health in men and women.