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The low dopamine hypothesis : a plausible mechanism underpinning residual urine, overactive bladder and nocturia (RON) syndrome in older patients

(2023) PROGRES EN UROLOGIE. 33(4). p.155-171
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Abstract
Introduction. — Aging is associated with a combination of several lower urinary tract (LUT) signs and symptoms, including residual urine, overactive bladder and nocturia. One of the mechanisms of this LUT dysfunction that has not been discussed in dept so far is the role of dopamine (DA). Methods. — In this narrative review, we explore the dopaminergic hypothesis in the development of this combination of LUT signs and symptoms in older adults. Results. — DA is one of the neurotransmitters whose regulation and production is disrupted in aging. In synucleinopathies, altered DAergic activity is associated with the occurrence of LUTS and sleep disorders. Projections of DAergic neurons are involved in the regulation of sleep, diuresis, and bladder activity. The low dopamine hypothesis could explain the genesis of a set of LUT signs and symptoms commonly seen in this population, including elevated residual urine, Overactive bladder syndrome and Nocturia (discussed as the RON syndrome). This presentation is however also common in older patients without synucleinopathies or neurological disorders and therefore we hypothesise that altered DAergic activity because of pathological aging, and selective destruction of DAergic neurons, could underpin the presentation of this triad of LUT dysfunction in the older population. Conclusion. — The concept of RON syndrome helps to better understand this common phenotypic presentation in clinical practice, and therefore serves as a useful platform to diagnose and treat LUTS in older adults. Besides recognizing the synucleinopathy ‘‘red flag’’ symptoms, this set of multi-causal LUT signs and symptoms highlights the inevitable need for combination therapy, a challenge in older people with their comorbidities and concomitant medications.
Keywords
overactive bladder, urinary retention, nocturia, Sleep disorders, Older, Dopamine

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MLA
Haddad, Rebecca, et al. “The Low Dopamine Hypothesis : A Plausible Mechanism Underpinning Residual Urine, Overactive Bladder and Nocturia (RON) Syndrome in Older Patients.” PROGRES EN UROLOGIE, vol. 33, no. 4, Elsevier Masson, 2023, pp. 155–71, doi:10.1016/j.purol.2023.01.002.
APA
Haddad, R., Panicker, J., Verbakel, I., Dhondt, K., Ghijselings, L., Hervé, F., … Everaert, K. (2023). The low dopamine hypothesis : a plausible mechanism underpinning residual urine, overactive bladder and nocturia (RON) syndrome in older patients. PROGRES EN UROLOGIE, 33(4), 155–171. https://doi.org/10.1016/j.purol.2023.01.002
Chicago author-date
Haddad, Rebecca, Jalesh Panicker, Irina Verbakel, Karlien Dhondt, Lynn Ghijselings, François Hervé, Mirko Petrovic, Michael Whishaw, Donald Bliwise, and Karel Everaert. 2023. “The Low Dopamine Hypothesis : A Plausible Mechanism Underpinning Residual Urine, Overactive Bladder and Nocturia (RON) Syndrome in Older Patients.” PROGRES EN UROLOGIE 33 (4): 155–71. https://doi.org/10.1016/j.purol.2023.01.002.
Chicago author-date (all authors)
Haddad, Rebecca, Jalesh Panicker, Irina Verbakel, Karlien Dhondt, Lynn Ghijselings, François Hervé, Mirko Petrovic, Michael Whishaw, Donald Bliwise, and Karel Everaert. 2023. “The Low Dopamine Hypothesis : A Plausible Mechanism Underpinning Residual Urine, Overactive Bladder and Nocturia (RON) Syndrome in Older Patients.” PROGRES EN UROLOGIE 33 (4): 155–171. doi:10.1016/j.purol.2023.01.002.
Vancouver
1.
Haddad R, Panicker J, Verbakel I, Dhondt K, Ghijselings L, Hervé F, et al. The low dopamine hypothesis : a plausible mechanism underpinning residual urine, overactive bladder and nocturia (RON) syndrome in older patients. PROGRES EN UROLOGIE. 2023;33(4):155–71.
IEEE
[1]
R. Haddad et al., “The low dopamine hypothesis : a plausible mechanism underpinning residual urine, overactive bladder and nocturia (RON) syndrome in older patients,” PROGRES EN UROLOGIE, vol. 33, no. 4, pp. 155–171, 2023.
@article{01GQTPWG976SRM9E7444P7YS20,
  abstract     = {{Introduction. — Aging is associated with a combination of several lower urinary tract (LUT) signs and symptoms, including residual urine, overactive bladder and nocturia. One of the mechanisms of this LUT dysfunction that has not been discussed in dept so far is the role of dopamine (DA).
Methods. — In this narrative review, we explore the dopaminergic hypothesis in the development of this combination of LUT signs and symptoms in older adults.
Results. — DA is one of the neurotransmitters whose regulation and production is disrupted in aging. In synucleinopathies, altered DAergic activity is associated with the occurrence of LUTS and sleep disorders. Projections of DAergic neurons are involved in the regulation of sleep, diuresis, and bladder activity. The low dopamine hypothesis could explain the genesis of a set of LUT signs and symptoms commonly seen in this population, including elevated residual urine, Overactive bladder syndrome and Nocturia (discussed as the RON syndrome). This presentation is however also common in older patients without synucleinopathies or neurological disorders and therefore we hypothesise that altered DAergic activity because of pathological aging, and selective destruction of DAergic neurons, could underpin the presentation of this triad of LUT dysfunction in the older population.
Conclusion. — The concept of RON syndrome helps to better understand this common phenotypic presentation in clinical practice, and therefore serves as a useful platform to diagnose and treat LUTS in older adults. Besides recognizing the synucleinopathy ‘‘red flag’’ symptoms, this set of multi-causal LUT signs and symptoms highlights the inevitable need for combination therapy, a challenge in older people with their comorbidities and concomitant medications.}},
  author       = {{Haddad, Rebecca and Panicker, Jalesh and Verbakel, Irina and Dhondt, Karlien and Ghijselings, Lynn and Hervé, François and Petrovic, Mirko and Whishaw, Michael and Bliwise, Donald and Everaert, Karel}},
  issn         = {{1166-7087}},
  journal      = {{PROGRES EN UROLOGIE}},
  keywords     = {{overactive bladder,urinary retention,nocturia,Sleep disorders,Older,Dopamine}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{155--171}},
  publisher    = {{Elsevier Masson}},
  title        = {{The low dopamine hypothesis : a plausible mechanism underpinning residual urine, overactive bladder and nocturia (RON) syndrome in older patients}},
  url          = {{http://doi.org/10.1016/j.purol.2023.01.002}},
  volume       = {{33}},
  year         = {{2023}},
}

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