scholarly journals Hypertension and cognitive disorders: causes and underlying mechanisms

2018 ◽  
Vol 24 (5) ◽  
pp. 496-507
Author(s):  
V. A. Tsyrlin ◽  
N. V. Kuzmenko ◽  
N. G. Pliss
Keyword(s):  
Blood Pressure ◽  
Vascular Dementia ◽  
Memory Impairment ◽  
Cognitive Disorders ◽  
Learning Ability ◽  
Emotional Control ◽  
Brain Pathology ◽  
Personal Opinion ◽  
Close Relationship ◽  
Underlying Mechanisms

Arterial hypertension (HTN) is associated with significant changes in the structure of cerebral vessels. There is a close relationship between the functional activity of neurons and the intensity of their blood supply. Vascular dementia is a heterogeneous group of diseases resulting from the pathology of neurons, glia and vessels. Cognitive disorders are the most typical manifestations of brain pathology in vascular dementia and include memory impairment, decreased learning ability, lack of personal opinion, violation of emotional control and social behavior. The article overviews the data on the organization of cerebral circulation and the mechanisms of its changes in HTN. The article analyzes the causes leading to brain hypoperfusion in elevated blood pressure. The authors discuss the mechanisms resulting in cognitive disorders in hypertensive subjects. We also address the question arising in relation of HTN and cognitive impairments: “To which extent blood pressure should be lowered in hypertensive patients with cognitive decline?”.

scholarly journals Ginkgolide B Alleviates Learning and Memory Impairment in Rats With Vascular Dementia by Reducing Neuroinflammation via Regulating NF-κB Pathway

2021 ◽  
Vol 12 ◽  
Author(s):  
Lijuan Huang ◽  
Yijie Shi ◽  
Liang Zhao
Keyword(s):  
Vascular Dementia ◽  
Learning And Memory ◽  
Memory Impairment ◽  
Cognitive Learning ◽  
Glucose Deprivation ◽  
Potential Effect ◽  
Learning Ability ◽  
Inflammatory Factors ◽  
Sprague Dawley ◽  
Nissl Staining

Ginkgobalide B (GB) as the main active ingredient of traditional Chinese medicine Ginkgo biloba extract is reported to reduce neuroinflammation, protect neurons and promote cognitive learning ability. To explore that GB can reduce neuroinflammation through regulating nuclear factor-kappaB (NF-κB) signaling pathway and overcome cognitive dysfunction in rats with vascular dementia (VD), we aim at investigating the potential effect of GB on enhancing cognitive function in rats with VD. It was found that GB improved survival of oxygen-glucose deprivation (OGD) treated SH-SY5Y cells by attenuating inflammatory response via Toll-like Receptor 4 (TLR4)/NF-κB pathway. When rats were treated with bilateral common carotid artery occlusion (BCCAO) for 24 h, saline and GB were administered in Sprague-Dawley (SD) rats via a single intraperitoneal injection for consecutive 14 days. The behavioral changes of VD like rats treated with GB were observed through open field test, Morris water maze (MWM) and Y-maze electric maze. Nissl staining and immunofluorescence were used to observe changes of neurons in the hippocampus of rats. Western blot analysis was performed by detecting NF-κB pathway related inflammatory factors. The results found that GB can significantly improve the learning and memory ability of VD rats by reducing TLR4/NF-κB mediated neuroinflammation. In conclusion, GB seemed to be a potential drug for amelioration of learning and memory impairment in rats with VD.

Neuronal changes after chronic high blood pressure in animal models and its implication for vascular dementia

Synapse ◽  
2016 ◽  
Vol 70 (5) ◽  
pp. 198-205 ◽  
Author(s):  
Gonzalo Flores ◽  
Gabriel D. Flores-Gómez ◽  
Ma. de Jesús Gomez-Villalobos
Keyword(s):  
Blood Pressure ◽  
Animal Models ◽  
Vascular Dementia ◽  
High Blood Pressure

scholarly journals Dehulled Adlay Consumption Modulates Blood Pressure in Spontaneously Hypertensive Rats and Overweight and Obese Young Adults

Nutrients ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 2305
Author(s):  
Wan-Ju Yeh ◽  
Jung Ko ◽  
Wei-Yi Cheng ◽  
Hsin-Yi Yang
Keyword(s):  
Blood Pressure ◽  
Daily Intake ◽  
Experimental Period ◽  
Overweight And Obesity ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
Beneficial Effects ◽  
Underlying Mechanisms ◽  
Grain Foods

High blood pressure is a crucial risk factor for many cardiovascular diseases, and a diet rich in whole-grain foods may modulate blood pressure. This study investigated the effects of dehulled adlay consumption on blood pressure in vivo. We initially fed spontaneous hypertensive rats diets without (SHR group) or with 12 or 24% dehulled adlay (SHR + LA and SHR + HA groups), and discovered that it could limit blood pressure increases over a 12-week experimental period. Although we found no significant changes in plasma, heart, and kidney angiotensin-converting enzyme activities, both adlay-consuming groups had lower endothelin-1 and creatinine concentrations than the SHR group; the SHR + HA group also had lower aspartate aminotransferase and uric acid levels than the SHR group did. We later recruited 23 participants with overweight and obesity, and they consumed 60 g of dehulled adlay daily for a six-week experimental period. At the end of the study, we observed a significant decrease in the group’s systolic blood pressure (SBP), and the change in SBP was even more evident in participants with high baseline SBP. In conclusion, our results suggested that daily intake of dehulled adlay had beneficial effects in blood-pressure management. Future studies may further clarify the possible underlying mechanisms for the consuming of dehulled adlay as a beneficial dietary approach for people at risk of hypertension.

scholarly journals Association between egg intake and blood pressure in the USA: the INTERnational study on MAcro/micronutrients and blood Pressure (INTERMAP)

2021 ◽  
pp. 1-9
Author(s):  
Thanh-Huyen T Vu ◽  
Linda Van Horn ◽  
Martha L Daviglus ◽  
Queenie Chan ◽  
Alan R Dyer ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Dietary Cholesterol ◽  
International Study ◽  
Obese Women ◽  
Linear Regression Models ◽  
Cross Sectional ◽  
Men And Women ◽  
The Usa ◽  
Underlying Mechanisms

Abstract Objectives: To investigate associations of egg intake with blood pressure (BP) and the role of dietary variables and other macro- and micro-nutrients in the association. Design: We used cross-sectional data for the USA as part of the INTERnational study on MAcro/micronutrients and blood Pressure (INTERMAP). INTERMAP was surveyed between 1996 and 1999, including four 24-h dietary recalls, two 24-h urine collections and eight measurements of systolic BP and diastolic BP (SBP, DBP). Average egg intake (g/d) was calculated. Multivariable linear regression models were used to estimate the association between egg intake (per each 50 g/d or per quintile) and BP. The roles of dietary variables and other macro- and micro-nutrients in this association were also investigated. Setting: In the USA. Participants: In total, 2195 US INTERMAP men and women aged 40–59 years. Results: Participants were 50 % female, 54 % non-Hispanic White and 16 % non-Hispanic Black. Mean egg intake (sd) in men and women was 30·4(29·8) and 21·6(20·5) g/d, respectively. Adjusting for demographics, socio-economics, lifestyle and urinary Na:K excretion ratios, we found non-linear associations with BP in non-obese women (P-quadratic terms: 0·004 for SBP and 0·035 for DBP).The associations remained after adjusting for dietary variables, macro/micro nutrients or minerals. Dietary cholesterol was highly correlated with egg intake and may factor in the association. No association was found in obese women and in obese or non-obese men. Conclusion: Egg intake was non-linearly associated with SBP and DBP in non-obese women, but not in obese women or men. Underlying mechanisms require additional study regarding the role of obesity and sex.

Elderly patients with cognitive impairments on an ambulance care

2021 ◽  
Vol 25 (2) ◽  
pp. 19-27
Author(s):  
Tatiana Andreevna Bogdanova ◽  
Anna V. Turusheva ◽  
Elena V. Frolova ◽  
Dmitriy L. Logunov
Keyword(s):  
Cognitive Impairment ◽  
Memory Impairment ◽  
Complete Blood Count ◽  
Beta Blockers ◽  
Blood Pressure Measurement ◽  
Depression Scale ◽  
Cognitive Disorders ◽  
The Elderly ◽  
Cross Sectional ◽  
Global Cognition

BACKGROUND: Cognitive impairment is one of the most common geriatric syndromes that occur in the elderly. Dementia is a severe cognitive disorder that results in the professional, social, and functional impairment and gradual loss of independence. However, in most cases, the stage of dementia is preceded by a long period of non-dementia cognitive impairment. In this regard, one of the priorities of public health is to identify potentially reversible forms of dementia and cognitive impairment in the early stages. AIM: To assess demographic characteristics, co-morbidities and factors that are associated with cognitive impairment in adults aged 65 years and over and to determine the prevalence of cognitive disorders in aging population. MATERIALS AND METHODS: cross-sectional study included all patients aged 65 years and older who attended the ambulance care from 24.10.2019 to 15.12.2019 in Saint Petersburg. Measurements: the Montreal cognitive assessment test, the 15-item Geriatric Depression Scale. Data collection included a full medical history, blood pressure measurement, a medication review and blood tests (complete blood count, lipids, hormones, glucose, ALT, AST and creatinine). RESULTS: The prevalence of mild cognitive impairment was 62.9 % (95 % CI 56-70), severe cognitive impairment 8.2 %. We detected that hypertension, stroke, sleep disorders, subjective memory complaints and symptoms of depression were identified as factors associated with CI after adjustment for covariates. Hypertension and depression were related with cognitive impairment (p 0.05). Also patients with depression scored worse in global cognition and attention function (p 0.05). Patients with diabetes had association with a decrease in abstraction function (p = 0.02). Low hemoglobin levels were related with poor global cognition and memory impairment (p 0.01). Beta-blocker use was significantly associated with poor global cognition and memory impairment (p 0.01). CONCLUSIONS: We found that elders have a high prevalence of cognitive disorders. We also demonstrated association between co-morbidities and factors as hypertension, anemia, diabetes, depression and administration of beta-blockers with poor cognitive performance in the elderly.

scholarly journals Acetyl-L-Carnitine in Dementia and Other Cognitive Disorders: A Critical Update

Nutrients ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1389 ◽  
Author(s):  
Manuela Pennisi ◽  
Giuseppe Lanza ◽  
Mariagiovanna Cantone ◽  
Emanuele D’Amico ◽  
Francesco Fisicaro ◽  
...  
Keyword(s):  
Meta Analysis ◽  
Cognitive Disorders ◽  
Longitudinal Assessment ◽  
Cholinergic Activity ◽  
Homogeneous Sample ◽  
Mitochondrial Energy Metabolism ◽  
Clinical Scales ◽  
Slowing Down ◽  
Underlying Mechanisms

Several studies explored the effects of acetyl-L-carnitine (ALC) in dementia, suggesting a role in slowing down cognitive decline. Nevertheless, in 2003 a systematic review concluded there was insufficient evidence to recommend a clinical use, although a meta-analysis in the same year showed a significant advantage for ALC for clinical scales and psychometric tests. Since then, other studies have been published; however, a critical review is still lacking. We provide an update of the studies on ALC in primary and secondary dementia, highlighting the current limitations and translational implications. Overall, the role of ALC in dementia is still under debate. The underlying mechanisms may include restoring of cell membranes and synaptic functioning, enhancing cholinergic activity, promoting mitochondrial energy metabolism, protecting against toxins, and exerting neurotrophic effects. The effects of ALC on the gut–liver–brain axis seem to identify the category of patients in which the new insights contribute most to the mechanisms of action of ALC, likely being the liver metabolism and the improvement of hepatic detoxifying mechanisms the primary targets. In this framework, our research group has dealt with this topic, focusing on the ALC-related cross-talk mechanisms. Further studies with homogeneous sample and longitudinal assessment are needed before a systematic clinical application.

scholarly journals Breastfeeding in the First Days of Life Is Associated With Lower Blood Pressure at 3 Years of Age

2021 ◽  
Author(s):  
Kozeta Miliku ◽  
Theo J. Moraes ◽  
Allan B. Becker ◽  
Piushkumar J. Mandhane ◽  
Malcolm R. Sears ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Body Mass Index ◽  
Breast Milk ◽  
Body Mass ◽  
Disease Risk ◽  
Cardiovascular Disease Risk ◽  
Maternal Body Mass Index ◽  
Lower Blood Pressure ◽  
Lower Blood ◽  
Underlying Mechanisms

Background Breastfeeding in infancy is associated with lower cardiovascular disease risk in adulthood; however, the amount of breastfeeding required to achieve this benefit is unknown. Methods and Results In the CHILD (Canadian Healthy Infant Longitudinal Development) Cohort Study, we analyzed 2382 children with complete data on early life feeding and blood pressure. Infant feeding was documented from hospital records in the first few days of life and reported by mothers throughout infancy. Blood pressure was measured at 3 years of age. Analyses controlled for birth weight, gestational age, socioeconomic status, maternal body mass index, and other potential confounders. We found that nearly all children (2333/2382; 97.9%) were ever breastfed, of whom 98 (4.2%) only briefly received breast milk during their birth hospitalization (“early limited breastfeeding”). At 3 years of age, blood pressure was higher in children who were never breastfed (mean systolic/diastolic 103/60 mm Hg) compared with those who were ever breastfed (99/58 mm Hg), including those who received only early limited breastfeeding (99/57 mm Hg). These differences in systolic blood pressure persisted in adjusted models (ever breastfed: −3.47 mm Hg, 95% CI, −6.14 to −0.80; early limited breastfeeding: −4.24 mm Hg, 95% CI, −7.45 to −1.04). Among breastfed children, there was no significant dose‐response association according to the duration or exclusivity of breastfeeding. Associations were not mediated by child body mass index. Conclusions Although the benefits of sustained and exclusive breastfeeding are indisputable, this study indicates any breastfeeding, regardless of duration or exclusivity, is associated with lower blood pressure at 3 years of age. Further research examining the bioactive components of early breast milk, underlying mechanisms, and long‐term associations is warranted.

scholarly journals Effects of blood pressure in people with cognitive disorders

2020 ◽  
Vol 87 (4) ◽  
pp. 41-44
Author(s):  
Roxana Mihaela Barbu ◽  
Cristina-Maria Gavrilescu ◽  
Dragoș Munteanu ◽  
Bogdan Stana ◽  
Luiza Pohaci-Antonesei ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Cognitive Disorders
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