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[Research progress on brain regulatory mechanisms of cardiovascular diseases].

The cardiovascular center is widely distributed at all levels from the spinal cord to the cerebral cortex. It regulates the activity of the autonomic nervous system through various neurotransmitters, thereby further modulating cardiovascular functions. Recent studies have demonstrated that central regulation plays an important role in the occurrence and development of cardiovascular diseases. Among them, the hypothalamic paraventricular nucleus is a key structure for maintaining cardiovascular activities, as it directly innervates sympathetic preganglionic neurons and participates in the regul

Cardiopulmonary neuro-immune reflex: From afferent stress signaling to peripheral myeloid memory.

The cardiopulmonary system is not only a pump-respirator network but also a sophisticated sensor-effector circuit. Recent findings have highlighted how mechanical and inflammatory stress in the heart and lungs is transmitted via afferent nerves-including vagal, glossopharyngeal, and spinal fibers-to the brainstem and higher autonomic centers. These afferent signals trigger adaptive or maladaptive efferent responses via the sympathetic nervous system, which in turn modulate immune cell dynamics in the bone marrow and peripheral organs. This review discusses the cardiopulmonary afferent-efferent…

Sensory neuropathy in patients with Pompe disease: a case series in Iran.

BackgroundPompe disease is a glycogen storage disease primarily affecting striated muscles. Despite its main manifestation in muscles, patients with Pompe disease may exhibit non-muscle symptoms, such as hearing loss, suggesting potential involvement of sensory organs or the nervous system due to glycogen accumulation.AimsThis study aimed to evaluate the presence of concomitant small and large fiber neuropathy in patients with Pompe disease.MethodsIn this case series study, nine patients with Pompe disease without complaints of neuropathy were evaluated. Small fiber neuropathy was assessed usi

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… This stimulates the sympathetic nervous system, with the normal range in hand between 1.39 and 1.65 s [ 9 ], alongside SUDOSCAN R examinations to evaluate both the peripheral sympathetic autonomic system and SFN [ 14 ]. …

Cardiac Arrest (CA) as the Initial Presentation of Cocaine-Induced Takotsubo Cardiomyopathy (TCM): A Case Report and Review of Literature.

Cocaine is used as an illicit substance responsible for the most common cause of drug-related death. It is a stimulant that acts on the sympathetic nervous system and cardiovascular system leading to exaggerated, prolonged sympathetic activity due to the accumulation of neurotransmitters. Cardiovascular side effects of cocaine are coronary artery spasms, myocarditis, arrhythmias, and congestive heart failure. Takotsubo cardiomyopathy (TCM) is characterized by transient hypokinesis, akinesis, or dyskinesis of the left ventricle (LV) wall with or without apical involvement in the absence of obst…

Hemodynamic and Electrocardiographic Aspects of Uncomplicated Singleton Pregnancy.

Pregnancy is associated with significant changes in maternal hemodynamics, which are triggered by profound systemic vasodilation and mediated through the autonomic nervous system as well as the renin-angiotensin-aldosterone system. Vascular function changes to help accommodate an increase in intravascular volume due to blood volume expansion associated with pregnancy while maintaining the efficiency of ventricular-arterial coupling and diastolic perfusion pressure. The heart undergoes physiological (eccentric) hypertrophy due to increased volume load and cardiac stroke work, whereas the functi

[Pleiotropic effects of new generation calcium channel blockers on cardiovascular protections].

Calcium channel blockers (CCBs) are widely used to treat hypertension and generally act on L-type calcium channels. Recent studies have repo … ction of glomerular capillary pressure, a stabilization of renin-angiotensin-aldosterone system and sympathetic nervous system. Therefore, the blockade of non-L-type calcium channels has unique pharmacological features of renoprotective, vascular endothelial protective, and cardioprotective effects. These new generation CCBs have special therapeutic qualities beyond their p …

[Biological factors influencing response to diuretics in patients with cirrhosis and ascites].

PURPOSES: To examine the biological factors influencing response to diuretics in patients with cirrhosis and ascites. METHODS: Sixty-nine p … IONS: In patients with cirrhosis and ascites, the degree of activation of the renin-aldosterone and sympathetic nervous system influences diuretic response of ascites and is estimated by measured baseline natriuresis.

[Treatments with alpha-stimulants in urology].

Neuropharmacology is a rapidly expanding field due to the regular discovery of new neurotransmitters or neuroreceptors. Hopes have now been raised for the treatment of vesicosphincteric disorders by developing molecules with a potential selective clinical action on the detrusor or the urethra. After a brief review of the neuroanatomy and general neuropharmacology of the sympathetic nervous system, the current indications for alpha agonists are reviewed and discussed. These indications include the treatment of priapism, retrograde ejaculation, and incontinence due to sphincter incompetence. The…

Sympathetic skin response (SSR) in multiple sclerosis.

The function of the autonomic system in multiple sclerosis (MS) is often afflicted. In order to reveal the presence of autonomic disturbances examination of sympathetic skin response (SSR), as a simple non-invasive method of the evaluation of conduction in autonomic nervous system, was performed in 25 patients with clinically defined MS. The diagnosis was confirmed by MRI and evoked potentials studies. Bimodal type of stimulation was used: the median nerve was stimulated, then the auditory stimulus (burst) was presented to the patient. Responses were recorded simultaneously from the palms and

Orthostatic hypotension in neurological disease.

It is now recognized that orthostatic hypotension occurs as a complication of many neurological diseases. An account is given of some of those in which it may develop. The pathological lesions frequently allow studies to be made of physiological mechanisms remaining in the isolated parts of the nervous system. For example transection of the cervical spinal cord causes complete separation of peripheral sympathetic pathways from the control of the brain. It was possible, therefore, to examine the control of renin release and also cerebral blood flow regulation during change of blood pressure in

The effects of abnormal sympathetic nervous function upon the ventilatory response to hypoxia.

THE VENTILATORY RESPONSE TO HYPOXIA WAS STUDIED IN TWO GROUPS OF SUBJECTS WITH ABNORMAL SYMPATHETIC NERVOUS CONTROL: (a) human subjects with familial dysautonomia (Riley-Day syndrome), and (b) unanesthetized goats treated with an alpha-adrenergic blocking agent (phenoxybenzamine). The ventilatory response to hypoxia was evaluated in two ways: (a) from the slope of the relationship between ventilation and alveolar P(Co2) ([unk]V(E)-P(ACo2) slope) during the rebreathing of hypoxic and hyperoxic gases, and (b) from the change in ventilation produced when hypoxia was abruptly relieved. The ventila

Is forward head posture relevant to autonomic nervous system function and cervical sensorimotor control? Cross sectional study.

BACKGROUND: There is a growing interest concerning the understanding of the sagittal configuration of the cervical spine as a clinical outcome. However, evaluating sensorimotor control and autonomic nervous system for participants with forward head posture (FHP) compared to strictly matched control participants with normal head alignment has not been adequately addressed. METHODS: Sensorimotor control variables include smooth pursuit neck torsion test(SPNT), Overall stability index (OSI) and left and right rotation repositioning accuracy. Autonomic nervous system function includes amplitude a

Neuronal acetylcholine receptor autoimmunity.

Nicotinic acetylcholine receptors (AChRs) are ligand-gated cation channels that are present throughout the nervous system. The muscle AChR mediates transmission at the neuromuscular junction; antibodies against the muscle AChR are the cause of myasthenia gravis. There are numerous subtypes of AChRs present throughout the nervous system. These neuronal AChRs are closely related to the muscle AChR structurally, but are pharmacologically and immunologically distinct. The ganglionic (alpha3-type) neuronal AChR mediates fast synaptic transmission in sympathetic, parasympathetic, and enteric autonom

Circadian Variations in Sympathetic Vasoconstriction in Older Adults with and Without Type 2 Diabetes.

INTRODUCTION: An impact of the sympathetic nervous system in the higher rate of cardiovascular events in the early morning compared to the evening has been claimed. Augmented sympathetic vasoconstriction increases cardiovascular risk by augmenting pulse pressure and cardiac afterload. Type 2 diabetes (T2DM) further increases sympathetic neurovascular transduction and cardiovascular risk. AIM: We assessed whether peripheral vasoconstriction triggered by a standardized sympathetic stressor is augmented at 6am vs 9pm in adults between 50-80 years with type 2 diabetes (T2DM50-80) vs healthy ones …

Retroperitoneal Ganglioneuroma (GN): Case report in 14 years old boy.

INTRODUCTION: The ganglioneuroma is a rare tumor arising from sympathetic nervous system, which is composed of gangliocytes and mature stroma. PRESENTATION OF THE CASE: A retroperitoneal ganglioneuroma was found in a 14 years old Saudi boy, presented with recurrent vomiting. CT image showing a retroperitoneal cyst near the inferior vena cava and right iliac vessels. Treated by laparoscopic cystic excision, histopathology of the cyst showing ganglioneuroma, completely excised. DISCUSSION: Ganglioneuromas arise from the sympathetic chain, The most common sites of presentation are the posterior…

Pulsed radiofrequency of superior cervical ganglion for treatment of painful post-traumatic trigeminal neuropathy (PTTN): A case series report.

Objective: Painful post-traumatic trigeminal neuropathy (PTTN) is a clinical pain syndrome that occurs due to injuries to the peripheral branches of the trigeminal nerve and is characterized by a deep burning pain and accompanied by positive and negative neurological signs. In patients with recalcitrant PTTN, the sympathetic nervous system is a potential therapeutic target. The aim of this study was to investigate the therapeutic response of PTTN patients to pulsed radiofrequency treatment (PRF) of the superior cervical sympathetic ganglion (SCG).Methods: Thirty-five patients with PTTN who had…

[Reflex dystrophy. Complex regional pain syndrome type I].

Reflex sympathetic dystrophy or complex regional pain syndrome type I is primarily a clinical diagnosis. The syndrome is most common after soft tissue damage or fractures and is more often seen in women than in men. The paramount symptom is pain, but oedema, a limited range of motion, changes in sensibility, and trophic changes are also seen. The pathogenesis is unknown, but most clinicians believe it to be caused by disturbances in the sympathetic or sensory nervous system and/or an excessive inflammatory response, most likely neurogenic inflammation. It seems that early treatment with physio

Reflex sympathetic dystrophy associated with amyotrophic lateral sclerosis.

Reflex sympathetic dystrophy (RSD) is a syndrome characterised by severe distal pain and vasomotor changes. It is believed to be caused by sympathetic nervous system overactivity. Trauma is the most frequent precipitant event. An association with amyotrophic lateral sclerosis (ALS) has been reported only once. We report three patients with ALS in whom the occurrence of RSD, in one of them at a very early clinical stage, seemed to have precipitated a more rapid clinical evolution. New sprouting re-innervating fibres have abnormal ion channels which might increase the risk of RSD. On the other h…

Reinnervation of the canine posterior cricoarytenoid muscle with sympathetic preganglionic neurons.

This experiment investigated the reinnervation of the canine posterior cricoarytenoid (PCA) muscle with preganglionic neurons of the sympathetic nervous system. Six dogs had their right recurrent laryngeal nerve (RLN) sectioned. Four of these dogs had the sympathetic cervical trunk (SCT) implanted into the right PCA muscle, and the two remaining dogs served as denervated controls. Four months later all dogs underwent videolaryngoscopy, electromyography, and electrical stimulation of the SCT. The PCA muscles were excised, sectioned, and stained for glycogen and ATPase. All four experimental PCA…

Behaviour and hypertension: a pathophysiological puzzle.

Patients with borderline hypertension typically show enhanced sympathetic and decreased parasympathetic tone, characteristic personality traits (submissiveness, hostility) and hyperreactivity to mental stress. It has been proposed that the hypertensive personality results in a persistent 'defence reaction', enhancing sympathetic outflow from the central nervous system and reactivity to stress. But evidence from pharmacological intervention trials suggests that blood pressure reactivity is controlled independently of average baseline blood pressure. A study comparing the effects of the centrall