ISSN: 1230-2813
Advances in Psychiatry and Neurology/Postępy Psychiatrii i Neurologii
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1/2018
vol. 27
 
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Artykuł oryginalny

Częstsze występowanie objawów pozaruchowych u kobiet niż u mężczyzn z chorobą Parkinsona

Małgorzata Michałowska
,
Tomasz Szatanowski
,
Urszula Fiszer

Adv Psychiatry Neurol 2018; 27 (1): 54-58
Data publikacji online: 2018/04/20
Plik artykułu:
- PPIN_6-Michalowska.pdf  [0.27 MB]
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PURPOSE

Sex-specific genetic and hormonal factors may have implications for expression of neurodegenerative disorders, including Parkinson’s disease (PD). Epidemiological studies show that overall incidence and prevalence of PD is 1.5 times higher in men than in women [1-3] and several studies suggest that men also have an earlier age of PD onset, faster rate of disease progression and increased mortality risk than women, whilst women have more benign phenotype in early PD but higher risk for motor (wearing-off and dyskinesia) and non-motor (especially mood-related fluctuations) levodopa induced complications [4-9]. Then male sex seems to be a risk factor in development of cognitive impairment and dementia in PD [10]. Sex differences in other non-motor symptoms (NMS) are probably more complex; studies on this subject matter have not always reported consistent findings, however, the recent study suggest that PD men are at higher risk of several NMS [11]. Sex related differences in PD still remain poorly understood. The aim of our study was to examine potential sex differences in specific domains of PD clinical picture: clinical subtype of the disease, motor status, severity of dyskinesia and motor fluctuations, occurrence of gastrointestinal disturbances (anorexia, nausea, vomiting), sleep disturbance and orthostatic hypotension.

METHODS

Seventy six patients (40 women and 36 men) with idiopathic PD diagnosed in conformity with the United Kingdom PD Society Brain Bank, the European Federation of Neurological Societies and the International Parkinson and Movement Disorder Society’s European Section recommendations [12, 13] were included. The recruitment process was based on consecutive entrance to the outpatient clinic of the Department of Neurology and Epileptology, Centre of Postgraduate Medical Education, Warsaw (Poland). The local ethics committee approved this study and all patients provided informed consent according to the Declaration of Helsinki.
Patients were treated as follows: 1) levodopa and ropinirole – 33 (43.4%) patients, 2) levodopa monotherapy – 19 (25%) patients, 3) levodopa and piribedil – 8 (10.5%) patients, 4) levodopa and ropinirole and entacapone – 6 (7.9%) patients, 5) levodopa and ropinirole and amantadine – 3 (4%) patients, 6) levodopa and piribedil and amantadine – 3 (4%) patients, 7) levodopa and amantadine – 2 (2.6%) patients, 8) levodopa and entacapone and amantadine – 1 (1.3%) patient, 9) levodopa and ropinirole and entacapone and amantadine – 1 (1.3%) patient. The levodopa equivalent daily dose (LEDD) was calculated [14]. Neither of the patients underwent stereotactic surgery.
The motor symptoms severity was evaluated using the Unified Parkinson’s Disease Rating Scale (UPDRS) part III (in on phase) and complications of therapy – using UPDRS IV (A: dyskinesia, B: motor fluctuations, C: other complications, i.e. anorexia, nausea, vomiting, sleep disturbance, symptomatic orthostasis) [15]. The characteristics of the group are presented in table 1.
Patients were classified according to van Rooden’s et al. [16] clinical PD subtypes definition. The authors identified 4 subtypes characterised by differences in the severity of nondopaminergic features and motor complications: subtype 1 is mildly affected in all domains, subtype 2 is predominantly characterised by severe motor complications, subtype 3 is affected mainly on nondopaminergic features without prominent motor complications and subtype 4 is severely affected in all domains.
Women and men were compared with respect to age, age of PD onset, PD duration, UPDRS III and IV (A, B, C) scores, LEDD, duration of levodopa and dopamine agonist treatments using Mann-Whitney test and to the predominant symptom (tremor, hypertonia or akinesia) at PD onset and clinical PD subtype using χ2 Pearson test. The level of statistical significance was set at p < 0.05.

RESULTS

PD started with predominant tremor in 48 (63%) patients, with predominant hypertonia in 21 (28%) patients and with predominant akinesia in 7 (9%) patients. Subtype 1 of PD according to van Rooden’s et al. classification (2011) was found in 41 (54%) patients, subtype 2 – in 28 (37%), subtype 3 – in 2 (2.5%) and subtype 4 – in 5 (6.5%) patients.
Differences between women and men are showed in table 2. No differences were found in age, age of PD onset, PD duration, UPDRS III scores, UPDRS IVA and IVB scores, LEDD, duration of levodopa treatment, duration of dopamine agonist treatment, the predominant symptom at PD onset and the clinical PD subtype 1 and 2 between women and men. The difference in clinical PD subtype 3 and 4 was not considered because of low number of patients in these groups. Women and men showed differences in UPDRS IVC scores (0.67 versus 0.26, p < 0.05). Anorexia, nausea, vomiting occurred in 4 (10.0%) women, occurred in no men. Sleep disturbance and symptomatic orthostasis also were more frequent in women, respectively in 16 (40.0%) women versus 8 (22.2%) men and 6 (15.0%) versus 4 (11.1%) (Figure 1).

DISCUSSION

In our study, female and male PD patients presented comparable motor status, dyskinesia and motor fluctuations, and had comparable occurrence of clinical PD subtype 1 (mildly affected in nondopaminergic features and motor complications) and subtype 2 (predominantly severe motor complications) according to van Rooden’s et al. [16] classification. Women and men were also similar in LEDD and duration of dopaminergic treatment. Until now, few studies have examined sex influences on use of dopaminergic therapy in PD. No sex differences were found in the type and dose of dopaminergic medications used in early PD [17] as well as in clinical manifestations and prognosis under the same treatment conditions [18].
Little is known about sex-related differences in anorexia, nausea, vomiting and orthostatic hypotension in PD. In our study involving PD patients on dopaminergic treatment women (as compared with men) showed a significantly higher scores in UPDRS IVC with a higher frequency of gastrointestinal disturbances (anorexia, nausea, vomiting), sleep disturbance and symptomatic orthostasis. Non-motor symptoms may be affected by both antiparkinsonian treatment and neurodegenerative process, and it is difficult to differentiate their influence. The number and severity of NMS were clearly higher in untreated de novo diagnosed PD patients comparing to control population [19]; yet, among drug-naïve patients with early PD, olfactory and sex disturbances seemed to be more severe in men than in women [20, 21], and men reported more pronounced certain cognitive deficits, whereas women experienced higher anxiety [21]. In PD patients, predominantly (87.8%) on antiparkinsonian treatment, without comparison with the general population, a higher prevalence or severity of fatigue, anxiety and pain were found in women, whereas sexual dysfunction was more prevalent in men [22]. Nicoletti et al. [11] also included PD patients predominantly (93.8%) on anti parkinsonian treatment, nonetheless in the case-control study, and reported that women showed a significantly higher frequency of depression and urinary disturbance than men. However, with respect to the control population and according to logistic regression stratified by sex and adjusted by age, the presence of depression, sleep disturbance, hallucination and cognitive impairment on the bases of the MMSE was stronger associated with PD in men and the presence of urinary disturbance in women [11]. Hypersexuality was associated with men and higher doses of dopamine agonists [23].

CONCLUSIONS

1. Our study evidenced that female PD patients on dopaminergic treatment are at higher risk of certain NMS (anorexia, nausea, vomiting, sleep disturbance and symptomatic orthostasis) than male ones.
2. Further research is needed to evaluate the influence of male or female sex on various NMS and use of dopaminergic medication in different PD stage, but sex-delineated clinical assessment and potential differences must already be considered in the clinical management of PD.

Conflict of interest/Konflikt interesu

Absent./Nie występuje.

Financial support/Finansowanie

Absent./Nie występuje.

References/Piśmiennictwo

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