1. The document discusses several classes of central nervous system stimulants including methylxanthines, nicotine, cocaine, amphetamines, and hallucinogens.
2. Methylxanthines like caffeine and theophylline are phosphodiesterase inhibitors that increase levels of cyclic nucleotides, and they also block adenosine receptors. Nicotine stimulates ganglia at low doses but blocks them at high doses.
3. Cocaine, amphetamines, and MDMA prolong the actions of neurotransmitters like dopamine and serotonin, producing euphoria. Hallucinogens profoundly alter mood and thought patterns while sparing motor function.
This document discusses central nervous system stimulants. It defines CNS stimulants as compounds that increase low levels of physiological activity. Some important CNS stimulants are classified as psychomotor stimulants like nicotine, cocaine, amphetamine, and methylphenidate which cause excitement and euphoria. Hallucinogens like LSD and THC affect thought, perception, and mood. Common therapeutic uses of CNS stimulants include treating obesity, ADHD, and narcolepsy. The document then discusses the mechanisms of action, effects, uses, and adverse effects of specific stimulants like nicotine, cocaine, amphetamine, methylphenidate, LSD
This document discusses several central nervous system stimulants and hallucinogens, including their mechanisms of action, therapeutic uses, and adverse effects. Methylxanthines like caffeine act as adenosine receptor antagonists and phosphodiesterase inhibitors, producing stimulation. Nicotine acts on nicotinic acetylcholine receptors. Cocaine and amphetamines inhibit monoamine reuptake. LSD is a serotonin agonist that can induce hallucinations. THC is the main psychoactive component in marijuana and acts through cannabinoid receptors. Many have therapeutic uses for conditions like ADHD, narcolepsy, and obesity but also carry risks of dependence and abuse.
Stimulants work by acting on the central nervous system (CNS) to increase alertness and cognitive function. Stimulants can be prescription medications or illicit substances, such as Cocaine. Stimulants may be taken orally, snorted, or injected. If you have a Stimulant addiction, seek help today.
The document discusses various classes of central nervous system stimulants including their mechanisms of action, effects, uses, and examples. It covers analeptic, respiratory, convulsant, psychomotor and sympathomimetic stimulants as well as methylxanthines such as caffeine and theophylline. Examples discussed include amphetamines, cocaine, nicotine and other stimulants.
The document discusses various classes of central nervous system stimulants including their mechanisms of action, effects, uses, and examples. It covers analeptic, respiratory, convulsant, psychomotor and sympathomimetic stimulants as well as methylxanthines such as caffeine and theophylline. Examples discussed include amphetamines, cocaine, nicotine and other stimulants.
The document discusses various classes of central nervous system stimulants including their mechanisms of action, effects, uses, and examples. It covers analeptic, respiratory, convulsant, psychomotor and sympathomimetic stimulants as well as methylxanthines such as caffeine and theophylline. Examples discussed include amphetamines, cocaine, nicotine and other stimulants.
This document discusses several central nervous system stimulants and hallucinogens. It describes their mechanisms of action, therapeutic uses, and adverse effects. Key stimulants discussed include caffeine, nicotine, cocaine, amphetamines, atomoxetine, methylphenidate, and modafinil. Hallucinogens covered are LSD, PCP, THC, and rimonabant. Therapeutic uses include treatment of ADHD, narcolepsy, and obesity. Adverse effects can include dependence, withdrawal symptoms, anxiety, increased heart rate and blood pressure, psychosis, and seizures.
Central Nervous System Stimulants presentationDixitGoyal10
CNS stimulants increase mental and physical activity by blocking neurotransmitter reuptake or promoting release. They are classified based on their site of action in the brain or spinal cord and mechanism of action. While they have therapeutic uses for conditions like ADHD and narcolepsy, CNS stimulants can also cause adverse effects like euphoria, insomnia, convulsions, and addiction if misused.
This document discusses central nervous system stimulants. It defines CNS stimulants as compounds that increase low levels of physiological activity. Some important CNS stimulants are classified as psychomotor stimulants like nicotine, cocaine, amphetamine, and methylphenidate which cause excitement and euphoria. Hallucinogens like LSD and THC affect thought, perception, and mood. Common therapeutic uses of CNS stimulants include treating obesity, ADHD, and narcolepsy. The document then discusses the mechanisms of action, effects, uses, and adverse effects of specific stimulants like nicotine, cocaine, amphetamine, methylphenidate, LSD
This document discusses several central nervous system stimulants and hallucinogens, including their mechanisms of action, therapeutic uses, and adverse effects. Methylxanthines like caffeine act as adenosine receptor antagonists and phosphodiesterase inhibitors, producing stimulation. Nicotine acts on nicotinic acetylcholine receptors. Cocaine and amphetamines inhibit monoamine reuptake. LSD is a serotonin agonist that can induce hallucinations. THC is the main psychoactive component in marijuana and acts through cannabinoid receptors. Many have therapeutic uses for conditions like ADHD, narcolepsy, and obesity but also carry risks of dependence and abuse.
Stimulants work by acting on the central nervous system (CNS) to increase alertness and cognitive function. Stimulants can be prescription medications or illicit substances, such as Cocaine. Stimulants may be taken orally, snorted, or injected. If you have a Stimulant addiction, seek help today.
The document discusses various classes of central nervous system stimulants including their mechanisms of action, effects, uses, and examples. It covers analeptic, respiratory, convulsant, psychomotor and sympathomimetic stimulants as well as methylxanthines such as caffeine and theophylline. Examples discussed include amphetamines, cocaine, nicotine and other stimulants.
The document discusses various classes of central nervous system stimulants including their mechanisms of action, effects, uses, and examples. It covers analeptic, respiratory, convulsant, psychomotor and sympathomimetic stimulants as well as methylxanthines such as caffeine and theophylline. Examples discussed include amphetamines, cocaine, nicotine and other stimulants.
The document discusses various classes of central nervous system stimulants including their mechanisms of action, effects, uses, and examples. It covers analeptic, respiratory, convulsant, psychomotor and sympathomimetic stimulants as well as methylxanthines such as caffeine and theophylline. Examples discussed include amphetamines, cocaine, nicotine and other stimulants.
This document discusses several central nervous system stimulants and hallucinogens. It describes their mechanisms of action, therapeutic uses, and adverse effects. Key stimulants discussed include caffeine, nicotine, cocaine, amphetamines, atomoxetine, methylphenidate, and modafinil. Hallucinogens covered are LSD, PCP, THC, and rimonabant. Therapeutic uses include treatment of ADHD, narcolepsy, and obesity. Adverse effects can include dependence, withdrawal symptoms, anxiety, increased heart rate and blood pressure, psychosis, and seizures.
Central Nervous System Stimulants presentationDixitGoyal10
CNS stimulants increase mental and physical activity by blocking neurotransmitter reuptake or promoting release. They are classified based on their site of action in the brain or spinal cord and mechanism of action. While they have therapeutic uses for conditions like ADHD and narcolepsy, CNS stimulants can also cause adverse effects like euphoria, insomnia, convulsions, and addiction if misused.
This document discusses CNS stimulants and nootropic agents. It provides classifications and descriptions of various CNS stimulants including amphetamines, cocaine, caffeine, nicotine, and convulsants. It also discusses the mechanisms of action, uses, and adverse effects of nootropic agents that act as cholinergic activators like rivastigmine and donepezil, the glutamate antagonist memantine, and miscellaneous nootropics like piracetam and citicoline. The document aims to describe the pharmacology of these classes of drugs and their effects on cognition, memory, and brain function.
This document discusses CNS stimulants and nootropic agents. It begins by classifying various CNS stimulants such as psychostimulants, respiratory stimulants, convulsants, and listing examples like amphetamines, caffeine, nicotine. It then describes the mechanisms, effects and uses of specific stimulants - amphetamines, cocaine, caffeine, strychnine. Next, it covers nootropic agents like cholinergic activators rivastigmine, donepezil, memantine, piracetam and their mechanisms in improving cognition. The learning objectives are also stated.
This document summarizes different types of central nervous system (CNS) stimulants. It describes convulsants like strychnine that act by inhibiting the inhibitory neurotransmitter glycine. It also discusses analeptics like doxapram that stimulate respiration. Psychomotor stimulants such as amphetamines are described as producing excitement, euphoria and increased motor activity by blocking neurotransmitter reuptake or promoting release. Hallucinogens can induce changes in thought patterns and mood. The document provides examples and mechanisms of action for various classes of CNS stimulant drugs.
CNS stimulants and cognitive enhancers can be classified into several groups based on their mechanisms and effects. CNS stimulants include convulsants like strychnine which block glycine receptors and induce tonic convulsions. Analectics like doxapram stimulate respiration. Psycho stimulants such as amphetamines and methylphenidate increase dopamine and norepinephrine in the synaptic cleft. Caffeine is a mild stimulant. Cognitive enhancers for conditions like Alzheimer's work by various mechanisms including increasing acetylcholine through acetylcholinesterase inhibitors like donepezil, stimulating NMDA receptors with memantine, or providing antioxidant support.
This document provides information on various medications that affect the nervous system. It discusses categories of medications like cholinesterase inhibitors, neuromuscular blocking agents, antiepileptics, antidepressants, antipsychotics, anxiolytics, sedatives and more. For each category, it lists example medications and provides details on their expected actions, therapeutic uses, adverse effects, contraindications, precautions, interactions and important points for patient education. Receptors like muscarinic, nicotinic, alpha, beta and dopamine receptors are also explained in relation to medication effects. Conditions like Parkinson's disease, seizures, schizophrenia, depression and bipolar disorder are overviewed in terms of their typical treatment approaches.
Drug used in Parkinson,Alzheimer and CNS stimulantsRajkumar Kumawat
This document discusses several central nervous system (CNS) stimulants. It describes how Parkinsonism involves slowed movement and tremors, and can be treated with drugs that increase dopamine like levodopa. Alzheimer's disease causes dementia and memory loss, and is treated with cholinergic drugs. CNS stimulants temporarily improve mental and physical function and include xanthines like caffeine, amphetamines, and methylphenidate. Other stimulants discussed are pentylenetetrazol, nikethamide, strychnine, and lobeline.
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This document discusses various central nervous system stimulants and cognitive enhancers. It describes how CNS stimulants generally increase muscular and mental activity from mild alertness to convulsions. It classifies stimulants into convulsants, analeptics, and psycho stimulants. Specific drugs are discussed in each category along with their mechanisms of action and uses. Cognitive enhancers aimed at improving cognition in conditions like Alzheimer's disease are also reviewed. Drugs that enhance cholinergic neurotransmission like donepezil as well as memantine, an NMDA receptor antagonist, are highlighted as treatments for Alzheimer's.
This document discusses various central nervous system stimulants and cognitive enhancers. It describes how CNS stimulants generally increase muscular and mental activity from mild alertness to convulsions. It classifies stimulants into convulsants, analeptics, and psycho stimulants. Specific drugs are discussed in each category along with their mechanisms of action, uses, and side effects. Cognitive enhancers aimed at improving cognition in conditions like Alzheimer's are also reviewed, focusing on cholinergic activators like donepezil as well as memantine which acts by blocking glutamate receptors.
This document discusses antidepressants, including tricyclic antidepressants and selective serotonin reuptake inhibitors. It provides definitions of affective disorders and describes the neurobiological theory of depression. It discusses the pharmacology, indications, mechanisms of action, adverse effects and interactions of tricyclic antidepressants. It also discusses the pharmacology, mechanisms of action, important drugs, adverse effects and interactions of selective serotonin reuptake inhibitors. The document provides information on the treatment of depression and compares older tricyclic antidepressants to newer selective serotonin reuptake inhibitors.
Central nervous system stimulants work by increasing levels of neurotransmitters like dopamine and norepinephrine. They cause initial feelings of euphoria and increased alertness and energy. However, regular use can lead to tolerance and dependence. Common stimulants include caffeine, nicotine, cocaine, and amphetamines. They are used both medically to treat conditions like ADHD, obesity, and narcolepsy, as well as recreationally for their mood enhancing effects. However, stimulants also carry health risks like increased blood pressure, anxiety, and addiction. Their effects are mediated through interactions with neurotransmitter systems in the brain.
This document discusses the physiology and pharmacology of the sympathetic nervous system and its receptors. It begins by describing epinephrine as an important regulator of heart and vascular responses to exercise and stress. It then defines sympathomimetic drugs as those that mimic epinephrine's actions. The document goes on to detail the different alpha and beta receptor subtypes, their locations, and examples of agonists and antagonists. It discusses sympathetic neurotransmission and the mechanisms of drug-induced effects. Overall, the document provides a comprehensive overview of the sympathetic nervous system and its clinical applications.
This document discusses several central nervous system stimulants and hallucinogens. It describes their mechanisms of action, effects, uses, and adverse reactions. CNS stimulants discussed include caffeine, nicotine, cocaine, amphetamines, and methylphenidate. They generally act by increasing neurotransmitters like dopamine and norepinephrine. Hallucinogens covered are LSD, THC, and phencyclidine. They produce profound changes in thought and mood by acting on serotonin and other receptors. Both classes can cause dependence and adverse effects at high doses.
The central nervous system (CNS) is the part of the nervous system consisting of the brain and spinal cord. The CNS is so named because it integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric animals
Parasympathomimetics and parasympatholytics Pharmacology. Javeria Fateh
This document discusses parasympathomimetics and parasympatholytics. Parasympathomimetics stimulate the parasympathetic nervous system by acting as agonists at cholinergic receptors. They can be direct-acting choline esters or indirectly-acting anticholinesterases. Parasympatholytics reduce parasympathetic activity by blocking cholinergic receptors. Atropine is a commonly used parasympatholytic that causes dry mouth, blurred vision, tachycardia and constipation as side effects. Both classes of drugs have clinical uses in the GI, respiratory, urinary and ocular systems.
This document discusses various central nervous system (CNS) pharmacology agents including sedative-hypnotics, antianxiety agents, antidepressants, bipolar agents, antipsychotics, anti-seizure agents, antiparkinsonian agents. It describes the examples, mechanisms of action, therapeutic effects, and side effects of different drug classes that act on the CNS, such as benzodiazepines, barbiturates, selective serotonin reuptake inhibitors, atypical antipsychotics, carbamazepine, and levodopa. The document provides an overview of how these drug classes are used to treat conditions like insomnia, anxiety, depression, seizures, schizophrenia, bipolar disorder, and Parkinson's
1. Direct-acting cholinergic drugs like acetylcholine and its esters directly stimulate both muscarinic and nicotinic receptors, increasing parasympathetic effects like decreased heart rate and contraction.
2. Indirect-acting drugs like physostigmine and neostigmine inhibit acetylcholinesterase, increasing the level and duration of action of acetylcholine.
3. Atropine is an antimuscarinic drug that blocks muscarinic receptors, reducing parasympathetic effects and producing symptoms like dilated pupils, dry mouth, and increased heart rate. It is used as an antidote for organophosphate or cholinergic drug poisoning.
share - Lions, tigers, AI and health misinformation, oh my!.pptxTina Purnat
• Pitfalls and pivots needed to use AI effectively in public health
• Evidence-based strategies to address health misinformation effectively
• Building trust with communities online and offline
• Equipping health professionals to address questions, concerns and health misinformation
• Assessing risk and mitigating harm from adverse health narratives in communities, health workforce and health system
This document discusses CNS stimulants and nootropic agents. It provides classifications and descriptions of various CNS stimulants including amphetamines, cocaine, caffeine, nicotine, and convulsants. It also discusses the mechanisms of action, uses, and adverse effects of nootropic agents that act as cholinergic activators like rivastigmine and donepezil, the glutamate antagonist memantine, and miscellaneous nootropics like piracetam and citicoline. The document aims to describe the pharmacology of these classes of drugs and their effects on cognition, memory, and brain function.
This document discusses CNS stimulants and nootropic agents. It begins by classifying various CNS stimulants such as psychostimulants, respiratory stimulants, convulsants, and listing examples like amphetamines, caffeine, nicotine. It then describes the mechanisms, effects and uses of specific stimulants - amphetamines, cocaine, caffeine, strychnine. Next, it covers nootropic agents like cholinergic activators rivastigmine, donepezil, memantine, piracetam and their mechanisms in improving cognition. The learning objectives are also stated.
This document summarizes different types of central nervous system (CNS) stimulants. It describes convulsants like strychnine that act by inhibiting the inhibitory neurotransmitter glycine. It also discusses analeptics like doxapram that stimulate respiration. Psychomotor stimulants such as amphetamines are described as producing excitement, euphoria and increased motor activity by blocking neurotransmitter reuptake or promoting release. Hallucinogens can induce changes in thought patterns and mood. The document provides examples and mechanisms of action for various classes of CNS stimulant drugs.
CNS stimulants and cognitive enhancers can be classified into several groups based on their mechanisms and effects. CNS stimulants include convulsants like strychnine which block glycine receptors and induce tonic convulsions. Analectics like doxapram stimulate respiration. Psycho stimulants such as amphetamines and methylphenidate increase dopamine and norepinephrine in the synaptic cleft. Caffeine is a mild stimulant. Cognitive enhancers for conditions like Alzheimer's work by various mechanisms including increasing acetylcholine through acetylcholinesterase inhibitors like donepezil, stimulating NMDA receptors with memantine, or providing antioxidant support.
This document provides information on various medications that affect the nervous system. It discusses categories of medications like cholinesterase inhibitors, neuromuscular blocking agents, antiepileptics, antidepressants, antipsychotics, anxiolytics, sedatives and more. For each category, it lists example medications and provides details on their expected actions, therapeutic uses, adverse effects, contraindications, precautions, interactions and important points for patient education. Receptors like muscarinic, nicotinic, alpha, beta and dopamine receptors are also explained in relation to medication effects. Conditions like Parkinson's disease, seizures, schizophrenia, depression and bipolar disorder are overviewed in terms of their typical treatment approaches.
Drug used in Parkinson,Alzheimer and CNS stimulantsRajkumar Kumawat
This document discusses several central nervous system (CNS) stimulants. It describes how Parkinsonism involves slowed movement and tremors, and can be treated with drugs that increase dopamine like levodopa. Alzheimer's disease causes dementia and memory loss, and is treated with cholinergic drugs. CNS stimulants temporarily improve mental and physical function and include xanthines like caffeine, amphetamines, and methylphenidate. Other stimulants discussed are pentylenetetrazol, nikethamide, strychnine, and lobeline.
Central nervous system stimulants /certified fixed orthodontic courses by Ind...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
This document discusses various central nervous system stimulants and cognitive enhancers. It describes how CNS stimulants generally increase muscular and mental activity from mild alertness to convulsions. It classifies stimulants into convulsants, analeptics, and psycho stimulants. Specific drugs are discussed in each category along with their mechanisms of action and uses. Cognitive enhancers aimed at improving cognition in conditions like Alzheimer's disease are also reviewed. Drugs that enhance cholinergic neurotransmission like donepezil as well as memantine, an NMDA receptor antagonist, are highlighted as treatments for Alzheimer's.
This document discusses various central nervous system stimulants and cognitive enhancers. It describes how CNS stimulants generally increase muscular and mental activity from mild alertness to convulsions. It classifies stimulants into convulsants, analeptics, and psycho stimulants. Specific drugs are discussed in each category along with their mechanisms of action, uses, and side effects. Cognitive enhancers aimed at improving cognition in conditions like Alzheimer's are also reviewed, focusing on cholinergic activators like donepezil as well as memantine which acts by blocking glutamate receptors.
This document discusses antidepressants, including tricyclic antidepressants and selective serotonin reuptake inhibitors. It provides definitions of affective disorders and describes the neurobiological theory of depression. It discusses the pharmacology, indications, mechanisms of action, adverse effects and interactions of tricyclic antidepressants. It also discusses the pharmacology, mechanisms of action, important drugs, adverse effects and interactions of selective serotonin reuptake inhibitors. The document provides information on the treatment of depression and compares older tricyclic antidepressants to newer selective serotonin reuptake inhibitors.
Central nervous system stimulants work by increasing levels of neurotransmitters like dopamine and norepinephrine. They cause initial feelings of euphoria and increased alertness and energy. However, regular use can lead to tolerance and dependence. Common stimulants include caffeine, nicotine, cocaine, and amphetamines. They are used both medically to treat conditions like ADHD, obesity, and narcolepsy, as well as recreationally for their mood enhancing effects. However, stimulants also carry health risks like increased blood pressure, anxiety, and addiction. Their effects are mediated through interactions with neurotransmitter systems in the brain.
This document discusses the physiology and pharmacology of the sympathetic nervous system and its receptors. It begins by describing epinephrine as an important regulator of heart and vascular responses to exercise and stress. It then defines sympathomimetic drugs as those that mimic epinephrine's actions. The document goes on to detail the different alpha and beta receptor subtypes, their locations, and examples of agonists and antagonists. It discusses sympathetic neurotransmission and the mechanisms of drug-induced effects. Overall, the document provides a comprehensive overview of the sympathetic nervous system and its clinical applications.
This document discusses several central nervous system stimulants and hallucinogens. It describes their mechanisms of action, effects, uses, and adverse reactions. CNS stimulants discussed include caffeine, nicotine, cocaine, amphetamines, and methylphenidate. They generally act by increasing neurotransmitters like dopamine and norepinephrine. Hallucinogens covered are LSD, THC, and phencyclidine. They produce profound changes in thought and mood by acting on serotonin and other receptors. Both classes can cause dependence and adverse effects at high doses.
The central nervous system (CNS) is the part of the nervous system consisting of the brain and spinal cord. The CNS is so named because it integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric animals
Parasympathomimetics and parasympatholytics Pharmacology. Javeria Fateh
This document discusses parasympathomimetics and parasympatholytics. Parasympathomimetics stimulate the parasympathetic nervous system by acting as agonists at cholinergic receptors. They can be direct-acting choline esters or indirectly-acting anticholinesterases. Parasympatholytics reduce parasympathetic activity by blocking cholinergic receptors. Atropine is a commonly used parasympatholytic that causes dry mouth, blurred vision, tachycardia and constipation as side effects. Both classes of drugs have clinical uses in the GI, respiratory, urinary and ocular systems.
This document discusses various central nervous system (CNS) pharmacology agents including sedative-hypnotics, antianxiety agents, antidepressants, bipolar agents, antipsychotics, anti-seizure agents, antiparkinsonian agents. It describes the examples, mechanisms of action, therapeutic effects, and side effects of different drug classes that act on the CNS, such as benzodiazepines, barbiturates, selective serotonin reuptake inhibitors, atypical antipsychotics, carbamazepine, and levodopa. The document provides an overview of how these drug classes are used to treat conditions like insomnia, anxiety, depression, seizures, schizophrenia, bipolar disorder, and Parkinson's
1. Direct-acting cholinergic drugs like acetylcholine and its esters directly stimulate both muscarinic and nicotinic receptors, increasing parasympathetic effects like decreased heart rate and contraction.
2. Indirect-acting drugs like physostigmine and neostigmine inhibit acetylcholinesterase, increasing the level and duration of action of acetylcholine.
3. Atropine is an antimuscarinic drug that blocks muscarinic receptors, reducing parasympathetic effects and producing symptoms like dilated pupils, dry mouth, and increased heart rate. It is used as an antidote for organophosphate or cholinergic drug poisoning.
share - Lions, tigers, AI and health misinformation, oh my!.pptxTina Purnat
• Pitfalls and pivots needed to use AI effectively in public health
• Evidence-based strategies to address health misinformation effectively
• Building trust with communities online and offline
• Equipping health professionals to address questions, concerns and health misinformation
• Assessing risk and mitigating harm from adverse health narratives in communities, health workforce and health system
Mercurius is named after the roman god mercurius, the god of trade and science. The planet mercurius is named after the same god. Mercurius is sometimes called hydrargyrum, means ‘watery silver’. Its shine and colour are very similar to silver, but mercury is a fluid at room temperatures. The name quick silver is a translation of hydrargyrum, where the word quick describes its tendency to scatter away in all directions.
The droplets have a tendency to conglomerate to one big mass, but on being shaken they fall apart into countless little droplets again. It is used to ignite explosives, like mercury fulminate, the explosive character is one of its general themes.
The skin is the largest organ and its health plays a vital role among the other sense organs. The skin concerns like acne breakout, psoriasis, or anything similar along the lines, finding a qualified and experienced dermatologist becomes paramount.
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Cell Therapy Expansion and Challenges in Autoimmune DiseaseHealth Advances
There is increasing confidence that cell therapies will soon play a role in the treatment of autoimmune disorders, but the extent of this impact remains to be seen. Early readouts on autologous CAR-Ts in lupus are encouraging, but manufacturing and cost limitations are likely to restrict access to highly refractory patients. Allogeneic CAR-Ts have the potential to broaden access to earlier lines of treatment due to their inherent cost benefits, however they will need to demonstrate comparable or improved efficacy to established modalities.
In addition to infrastructure and capacity constraints, CAR-Ts face a very different risk-benefit dynamic in autoimmune compared to oncology, highlighting the need for tolerable therapies with low adverse event risk. CAR-NK and Treg-based therapies are also being developed in certain autoimmune disorders and may demonstrate favorable safety profiles. Several novel non-cell therapies such as bispecific antibodies, nanobodies, and RNAi drugs, may also offer future alternative competitive solutions with variable value propositions.
Widespread adoption of cell therapies will not only require strong efficacy and safety data, but also adapted pricing and access strategies. At oncology-based price points, CAR-Ts are unlikely to achieve broad market access in autoimmune disorders, with eligible patient populations that are potentially orders of magnitude greater than the number of currently addressable cancer patients. Developers have made strides towards reducing cell therapy COGS while improving manufacturing efficiency, but payors will inevitably restrict access until more sustainable pricing is achieved.
Despite these headwinds, industry leaders and investors remain confident that cell therapies are poised to address significant unmet need in patients suffering from autoimmune disorders. However, the extent of this impact on the treatment landscape remains to be seen, as the industry rapidly approaches an inflection point.
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3. CNS Stimulants
Psychomotor stimulants (cause excitement, euphoria,
decrease feelings of fatigue, and increase motor
activity)
e.g. caffeine, Theophylline, amphetamine
Hallucinogens (produce profound changes in thought
patterns and mood, with little effect on the brainstem
and spinal cord)
e.g. THC, PCP, LSD
The CNS stimulants have diverse clinical
uses and are important as drugs of
abuse
3
4. Methylxanthines
(Theophylline, Theobromine & Caffeine)
Mechanism of action:
phosphodiesterase inhibitors →↑cAMP, cGMP
Blocking of adenosine receptors (A1 receptor)
N.B.:
↑cAMP and A1 receptor blocking → bronchodilation
Theophylline is used to treat bronchial asthma
4
5. • The methylxanthines are well
absorbed orally & distributes
to all body & brain , can cross
the placenta to the fetus and
are secreted into the breast
milk.
• All methylxanthines are
metabolized in the liver, and
then excreted in the urine
Pharmacokinetics:
5
6. Actions
a) CNS (dose-dependent)
Fatigue, alertness (normal dose)
Anxiety, insomnia, tremors (high dose)
Tolerance develops rapidly (withdrawal symptoms: fatigue
& sedation)
N.B. Effect of caffeine on CNS is
dose-dependent
6
7. Actions (cont.)
b) CVS
High dose: +ve inotropic,+ve chronotropic
(C.I. Angina and arrythmia)
c) Kidney
Weak diuretic (↑ G.F.R)
d) Gastric mucosa
↑ HCL (C.I. Peptic Ulcer)
e) Bronchi
Bronchodilation (theophylline)
f) Cerebral bl. V
V.C → Caffeine in migraine headache with ergotamine
Caffeine in normal headache with paracetamol and aspirin
7
8. 1. Theophylline: bronchial asthma (now
replaced by β2-agonists).
2. Caffeine
migraine headache with ergotamine
normal headache with paracetamol
and aspirin
Therapeutic uses:
8
9. insomnia, anxiety, agitation, tachycardia and arrythmia.
Sudden withdrawal of caffeine → headache, lethargy and
irritability.
Adverse effects of Caffeine
9
10. B. Nicotine
Mechanism of action:
Low doses: ganglionic stimulant (NN stimulant)
High doses: ganglionic blocker (NN blocker)
N.B. The mechanism of action of
nicotine is dose-dependent
(central & peripheral)
10
12. Actions (cont.)
Peripheral effects
Stimulation of symp. ganglia & adrenal medulla:
↑ BP, HR, VC and ↓ coronary blood flow ( CI: hypertension and angina)
Stimulation of parasymp. ganglia: ↑ GIT & Bladder motility
At high doses: block symp. Ganglia………… fall in BP
block parasym. Ganglia………decreased activity of
GIT and Bladder
12
13. Therapeutic uses and
adverse effects
No use except in smoking cessation therapy
Transdermal patch and chewing gum nicotine reduce
withdrawal symptoms & help to stop smoking
Adverse effects
Irritability, tremors, intestinal cramps, diarrhea,
increases HR & BP
13
14. Withdrawal symptoms
Nicotine is addictive →physical dependence
Withdrawal symptoms: irritability, anxiety, restlessness,
headache and insomnia
Appetite is affected & GI pain.
Treatment: nicotine replacement therapy (gums,
transdermal patches), Bupropion (decrease craving)
14
15. Varenicline
Varenicline is a partial agonist at neuronal nicotinic
acetylcholine receptors in the CNS.
Because varenicline is only a partial agonist at these
receptors, it produces less euphoric effects than nicotine
(nicotine is a full agonist). Thus, it is useful as an adjunct in
the management of smoking cessation in patients with
nicotine withdrawal symptoms.
Patients taking varenicline should be monitored for suicidal
thoughts, vivid nightmares, and mood changes.
15
17. C. Cocaine
Highly addictive drug, Schedule II
Mechanism of action:
Blockade of reuptake of monoamines (NE, 5HT,
DA) into the presynaptic terminals.
Prolongation of CNS & peripheral actions of
monoamines; in particular prolongation of DA in
LIMBIC SYSTEM (pleasure system)……euphoria
CHRONIC USE ….depletion of DA stores
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19. Actions
CNS
Stimulation of cortex & brainstem… ..behavioral effects
Feeling of well-being, euphoria.
Hallucinations, delusions, paranoia & grandiosity.
Increases motor activity
High doses: convulsions followed by respiratory and
vasomotor depression.
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20. Actions (cont.)
SNS
PREIPHERALLY: potentiate the action of NE
adrenergic stimulation (tachycardia, ↑ BP, periph. vc, and mydriasis)
Hyperthermia
(a) Increased muscular activity
(b)VC, resulting in decreased heat loss by sweating
(c) A direct central effect on the heat regulating center in the hypothalamus
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21. Therapeutic uses
Was Used as (Local Anesthesia): it blocks Na-
channels)
N.B. it is the only LA cause vasoconstriction
Administration by chewing, intranasal snorting, smoking or I.V.
Peak after intranasal: 15-20 min.
More rapid, more dependence: IV or crack smoking (free base)
Excretion in urine (easily detected)
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22. Adverse effects
Anxiety, ↑ HR, ↑ BP, paranoia (acute effect after ingestion)
Fatal arrythmia and risk of MI
Hyperthermia
Dependence
Withdrawal symptoms include physical and emotional
depression
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23. D. Amphetamines
A sympathetic amine, shows neurologic and clinical effects as cocaine.
Dextroamphetamine (major member),
Methamphetamine,
3,4-Methylenedioxymethamphetamine (MDMA or
Ecstasy)
Methylphenidate similar to amphetamine and also
Schedule II drug
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24. Mechanism of action
Releases intracellular stores of
CA.
Inhibits MAO Then high amounts
of CA in the synaptic spaces.
Weak reuptake transport
inhibitor
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25. Actions
CNS
Euphoria, ↑ alertness, ↓ fatigue, depressed appetite and
insomnia…..therapeutic uses in hyperactive children, appetite
control and narcolepsy
At high doses: psychosis, convulsions (ttt /Diazepam).
SNS
Indirect stimulation of the adrenergic system
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26. Therapeutic uses
A. Attention Deficit Hyperactivity Disorder
(ADHD):
Hyperkinetic children who lack the ability to be involved in one activity
for more than few minutes
Methylphenidate, Dextroamphetamine
New drug: Atomoxetine; selective NE reuptake inhibitor
Unlike methyphenidate which blocks dopamine reuptake than NE,
Atomoxetine is more selective for inhibition of NE reuptake
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27. Therapeutic uses (cont.)
B. Narcolepsy:
Uncontrollable bouts of sleepiness during the day , sometimes with
catalepsy (loss of muscle control)
Amphetamine may be used
Modafinil (first line therapy, unknown mechanism)
produces alertness with few psychoactive and euphoric effects.
Modafinil has potential for abuse and physical dependence.
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28. Completely absorbed from the GI tract, metabolized by the liver, and
excreted in the urine.
Amphetamine has a basic PKa:
Acidification of urine by ammonium chloride or ascorbic acid increases the
ionized species of the drug and so reduces its tubular reabsorption and
increasing its urinary excretion. (Used in intoxication of amphetamines)
Amphetamine abusers administer the drugs by IV injection and/or by
smoking.
The euphoria caused by amphetamine lasts 4 - 6 hours, or 4- 8 fold longer
than the effects of cocaine.
Pharmacokinetics of amphetamines:
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29. Adverse effects
CNS
Cause addiction, dependence, tolerance, and drug seeking behavior.
Insomnia, irritability, weakness, dizziness, tremors.
May cause: confusion, delirium , panic states and suicidal tendencies.
Chronic use:”amphetamine psychosis”(schizophrenia like)
CNS symptoms: TTT by chlorpromazine, haloperidol
Anorectic effect: due to the action on the lateral hypothalamic feeding
center
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30. Adverse effects (cont.)
CVS:
Palpitations, cardiac arrhythmias, hypertension, anginal pain
GI system effects:
Anorexia, nausea, vomiting, abdominal cramps & diarrhea.
Contraindications:
Pts with: hypertension, CVS disease, MAO inhibitors.
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31. Hallucinogenics
Tetrahydrocannabinol (THC)
It is the main psychoactive alkaloid contained in marijuana
Mechanism: the action is mediated through THC-receptors (CB1 receptors), which are G-protein
coupled (presynaptic receptors)
N.B.: endogenous cannabinoids act as neuromodulators in CNS → ↑ CB1 receptors →↓
neurotransmitters release
Actions
Eyphoria followed by relaxation and drowsiness
It impairs short term memory and mental activity
It decreases muscle strength, impairs highly skilled motor activity as car driving
It causes visual hallucination, disturbance in sense of distances, it causes delusions
It ↑ appetite
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32. Tetrahydrocannabinol (THC) cont.
Side effects
↑ HR, ↓ BP, reddening of eye
At high doses → psychosis
Tolerance, mild physical dependence occur with continuous frequent use
Uses
Dronabinol → antiemetic (with cancer chemotherapy)
→ for patients with AIDs who are losing weight (↑ appetite)
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33. Lysergic Acid Diethylamide (LSD)
Mechanism
It ↑ presynaptic 5HT receptors in midbrain, it blocks 5HT1, 5HT2 receptors in brain
It activates SNS →↑ BP, mydriasis, ↑ body temperature
Actions
Visual, clor, auditory hallucinations
N.B.:
D2-blockers (Haloperidol) → block hallucinogenic effects of LSD
Tolerance and physical dependence develop
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34. Phencyclidine
Mechanism
↓ UI of NE, 5HT, Dopamine
Block ion channel regulated by NMDA glutamate receptors
Actions
It causes dissociative analgesia (no pain, without loss of consciousness)
At higher doses → anaesethia, coma but eyes may remain open
It has anticholinergic activity (but produce hypersalivation)
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