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Anti Anti Anti Anti- - -Inflammation and Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective neuroprotective neuroprotective drugs drugs drugs drugs benefit the treatment of heroin dependent benefit the treatment of heroin dependent benefit the treatment of heroin dependent benefit the treatment of heroin dependent patients patients patients patients Ru-Band Lu, MD. Shiou-Lan Chen, PhD. Yun-Hsuan Chang, PhD. National Cheng Kung University, Taiwan

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Page 1: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

AntiAntiAntiAnti----Inflammation and Inflammation and Inflammation and Inflammation and neuroprotectiveneuroprotectiveneuroprotectiveneuroprotective drugs drugs drugs drugs benefit the treatment of heroin dependent benefit the treatment of heroin dependent benefit the treatment of heroin dependent benefit the treatment of heroin dependent

patientspatientspatientspatients

Ru-Band Lu, MD.Shiou-Lan Chen, PhD.

Yun-Hsuan Chang, PhD.

National Cheng Kung University, Taiwan

Page 2: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

Neurodegeneration in Mental Illnesses

• Schizophrenia

• Bipolar disorders

• Substance use disorders (alcohol)

• Anxiety disorders?

• Personality disorders?

2

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Neuronal degeneration in schizophrenia

Schizophrenia and

bipolar disorders

– Decreased grey & white – Decreased grey & white matter and lateral ventricular dilatation (Largen et al., 1984; De Peri l et al., 2012)

3

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Neuronal degeneration in Bipolar Disorder

• Diffused gray and white

matter loss, enlarged

ventricles & mild prefrontal

volume loss. (Wilde, et al., 1985)

• 17% larger lateral

ventricles and 2.5 times in

deep white matter

hyperintensities.(Kempton, M.J., et al., 2008.)

4

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Neuronal degeneration in Substance Abuse

Both MRI's are of middle-aged women

5

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Inflammation and Inflammation and Inflammation and Inflammation and neurodegenerationneurodegenerationneurodegenerationneurodegeneration

6

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Microglia Astroglia

Glial cells :

Key roles in disease and prime targets for therapy

Source for

neurotrophin productionTarget for

anti-inflammation

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Page 8: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

Role of microglia in toxin-induced progressive neurotoxicity

Reactive Microgliosis

LPS

(Extra Neurotoxin)

Ac

tiva

tio

n

MPTP

(Intra Neurotoxin)

(Working Model)

ProProProPro----inflammatory Factorsinflammatory Factorsinflammatory Factorsinflammatory Factors(ROS, NO., (ROS, NO., (ROS, NO., (ROS, NO., TNFaTNFaTNFaTNFa, IL, IL, IL, IL----1, PGs)1, PGs)1, PGs)1, PGs)

(Self-propelling)

Ac

tiva

tio

n

Microglia

Dopaminergic

Neuronal

Damage

8

Page 9: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

NADPH oxidase (PHOX)

O2O2

• –

gp91

p22rap1a

αααα ββββMAC-1

LPS

out

in

Naloxone,Dextromethorphan Memantine

Activated

NADPH NADP+ + H +

Resting

p22rap1a

p40

p47

rac2

p67

in

PKC

P

P

9

Page 10: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

O2

O2 • –

Dual Functions of Superoxide Radicals

gp91

Microglia

PHOX

ROS

H2O2

O • –NF-kB,AP-1

PKCLPS

LPS

O2 • –

TNF-αααα

IL-1

NO •

ONOO -2) Gene Expression

1) Neurotoxicity

DA neurons 10

Page 11: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

Dextromethorphan (DM) Memantine

• Non-competitive NMDA

receptor inhibitor in large

dose for anti-cough effect

• Neuroprotective effects in

vitro and in vivo at low dose

• Non-competitive NMDA receptor

inhibitor in large dosage

• Alzheimer's disease (20 mg/day)

• Neuroprotective effects in vitro

and in vivo at low dosage11

Page 12: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

LPS

Microglia

Novel Strategy: Modulation of

microglial activity

• Morphinans : Naloxone, D-Morphine

Dextromethorphan

• Dynorphins, Enkephalin, PACAP

• Memantine

Novel antiNovel antiNovel antiNovel anti----inflammatory therapyinflammatory therapyinflammatory therapyinflammatory therapy

TNF-αααα

IL-1ββββ

Neuronal

death

ONOO-

NO • O2 • -

Conventional Regimen:

• Aspirin, COX 2 inhibitors (PG)

• Anti-oxidants (Free radicals)

• Antibodies (TNF-α, IL-1)

• Receptor antagonists (TNF-α)

• Cortisone (toxic for long-term use)

• Memantine

PG’s

12

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Mechanism underlying Memantine induced increase inexpression of neurotrophic factors in astroglia

Memantine

13

HDACHATs

Astroglia

MemantineDepakine, 3-HM

mRNA of GDNF, BDNF

GDNF, BDNF

Nuclear

Chen et al., 2009

Page 14: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

LPS

Acti

vati

on

Trophic factors:

(GDNF, BDNF, NGF)

Reactive Microgliosis

Astroglia

Inhibition

Memantine, DM Stimulation

Memantine, 3-HM

Therapy for neurodegenerative diseases and

neuroprotective effect

Neurogenesis

Pro-inflammatory factors:

Superoxide, iROS

NO, TNFαααα, PGE2

Microglia

DA neuron

(Self-propelling)

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Hypotheses & Experimental Protocol in Addition

• Neuro-inflammation worsen progress and neurodegeneration

• Neurondegeneration causing the etiology and progress of mental illness

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Treatment of Neurodegeneration disease

• Current therapy treatment symptom or slowing or inhibiting the progress

• Development of novel therapy for central and peripheral diseases

16

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Research Aims

• Analysis of plasma cytokine and BDNF levels– Cytokine through BBB and correlation of BDNF in central and plasma

(Laske, 2006)

• The relationship of plasma cytokine, BDNF levels with heroin dependent

• Memantine and DM development of neuroprotective and neurogenesis therapy

17

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The relationship between inflammation and opioid dependence

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Animal data

Morphine addiction behavior modelMorphine addiction behavior model

(Condition Place Preference: CPP)

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S(Saline)

Black chamberCPP

Conditioning

CPP CPP

CPP Test (Condition Place Preference Test)

CPP

20

0 1 2 3 4 5 6 7 8 9 10 11 12 13 days

S + M (Morphine 5mg/kg)

or Mem (Memantine)+M White chamber

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Memantine attenuate chronic morphine induced-CPP in rats

Chen et al., J. of Neuroimmune Pharm. Dec.2011

M: Morphine 5mg/kg

Mem: Memantine 0.04-1 mg/kg

*P<0.05, **p<0.01, ***p<0.001 vs Saline group.

##P<0.01, ### p<0.001 vs Morphine group.

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Memantine potentiate serum BDNF expression

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J. of Neuroimmune Pharm. Dec.2011

M: Morphine 5mg/kg

Mem: Memantine 0.04-1 mg/kg

*P<0.05, **p<0.01 vs Saline group.

#P<0.05, ## p<0.01 vs Morphine group.

Page 23: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

Memantine attenuate chronic morphine induced

serum and brain cytokines expression

*P<0.05, **p<0.01, ***p<0.001 vs

Saline group.

#P<0.05 vs Morphine group.

23

J. of Neuroimmune

Pharm.Dec.2011

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CommentsCommentsCommentsComments• Large dose memantine 7.5 – 20mg/kg effective in NMDA

receptor

• Low dose memantine (0.2 - 1mg/kg) not effective in NMDA receptor antagonist in rat (Chen et al. 2012)

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receptor antagonist in rat

• Low dose memantine ( 0.2 – 1 mg/kg ) inhibition morphine addiction, decreasing cytokines and increasing BDNF in rat.

• Benefit in neuroprotection and neurogenesis(Chen et al. 2012)

(Chen et al. 2012)

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CommentsCommentsCommentsComments

• Inflammation relative addictive behavior in rat

• Low dose memantine effective inhibition inflammation and addictive behavior

25

(Chen et al. 2012)

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Human Heroin dependence treatment

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Human Heroin dependence treatment

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Method and results Method and results Method and results Method and results 1. Double-blind, Placebo-Controlled, Randomized

2. Heroin dependence with methadone treatment

�DM(60 or 120 mg/day) /placebo196 recruited at baseline and 48 DM60mg, 44 DM120mg196 recruited at baseline and 48 DM60mg, 44 DM120mgand 42 placebo left after 12 weeks treatment

�memantine (5mg/day) /placebo 133 recruited at baseline and 52 memantine and53 placebo left after 12 weeks treatment

Page 28: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

Method and results Method and results Method and results Method and results 1. Double-blind, Placebo-Controlled, Randomized

2. Heroin dependence with methadone treatment

�DM(60 or 120 mg/day) /placebo170 recruited at baseline and 42 DM60mg, 32 DM120mg 170 recruited at baseline and 42 DM60mg, 32 DM120mg and 33 placebo left after 12 weeks treatment

�memantine (5mg/day) /placebo 133 recruited at baseline and 52 memantine and53 placebo left after 12 weeks treatment

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Plasma Cytokine

29(Chen et al., 2012)

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DM for Heroin Addiction with Methadone DM for Heroin Addiction with Methadone DM for Heroin Addiction with Methadone DM for Heroin Addiction with Methadone Maintenance TreatmentMaintenance TreatmentMaintenance TreatmentMaintenance TreatmentMaintenance TreatmentMaintenance TreatmentMaintenance TreatmentMaintenance Treatment

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The effects of dextromethorphan on plasma cytokines, methadone dose, and combined use of substances in patients undergoing methadone maintenance therapy

MTD+Placebo p-valu

e

MTD+DM60 p-value

MTD+DM120 p-valueWeek 0 Week 12 Week 0 Week 12 Week 0 Week 12

TNF-α(pg/mL) 4.4 ± 0.5 4.3 ± 0.9

0.571

5.0 ± 0.63.0 ±0.4**

0.0005

4.0 ± 0.4 2.9 ± 0.3**0.0009

IL-8 (pg/mL) 4.8 ± 0.9 4.3 ± 0.90.14

7.4 ± 1.1 2.8 ± 0.3* 0.021 7.7 ± 1.32.92 ±

0.03IL-8 (pg/mL) 4.8 ± 0.9 4.3 ± 0.95

7.4 ± 1.1 2.8 ± 0.3* 0.021 7.7 ± 1.30.30*

0.03

MTD dose (mg)

40.0 ±4.6

44.8 ± 5.70.349

47.4 ±3.2

42.0 ±2.8

0.06144.1 ±4.0

41.9 ± 5.3 0.224

MTD dose change (%)

100.0 ±0

117.1±10.0

0.096

100.0 ±0

91.7 ±5.2**** 0.019 100.0 ±

092.3 ±5.1* 0.034

Urine morphine+ 19 18 15 7777 18 12Plasma morphine (pg/mL)

16.5 ±4.1

39.6 ±12.0

0.064

22.0 ±7.4

14.6 ±3.1

0.23624.1 ±6.7

17.9 ± 4.0 0.52

Urine AMPH+ 3 0 4 1 2 0 31(Chen et al., 2012)

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Heroin-dependent with methadone (MTD) therapy add on Placebo, dextromethorphan (DM) 60 mg/day (MTD+DM60) or MTD+DM120

32(Chen et al., 2012)

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CommentsCommentsCommentsComments• Low dose DM (60-120mg/day, 1-2mg/kg)• Plasma level 10–200 ng/ml (28-560 nM)• No effect in NMDA receptor antagonist

(IC50: 5–50 μM) (Church et al. 1994)

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(IC50: 5–50 μM) (Church et al. 1994)

• Effective in morphine addiction with methadone treatmentInhibition of methadone tolerance (one of important factors of addiction)

• Benefit in neuroprotection and decreasing neurodegeneration

(Chen et al. 2013)

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Heroin dependence with methadone Heroin dependence with methadone Heroin dependence with methadone Heroin dependence with methadone treatment treatment treatment treatment taking taking taking taking memantinememantinememantinememantine or placeboor placeboor placeboor placebo

Baseline Endpoint

Memantine Placebo P-value Memantine Placebo P-value

Number (n) 53 75 45 58

Gender (male/female) (n) 43/10 63/12 0.813 40/5 49/9 0.575

Age, mean (SD), (years) 37.06 ± 6.97 36.93 ± 7.15 0.923 37.91 ± 6.66 37.09 ± 6.94 0.524

Year of Heroin Use, mean (SD)Year of Heroin Use, mean (SD)

8.48 ± 7.10 7.58 ± 6.44 0.465 8.39 ± 7.27 7.35 ± 5.98 0.436

TNF-αααα (pg/mL), mean (SD) 3.65 ± 2.67 3.77 ± 3.30 0.824 2.28 ± 1.89 3.84 ± 3.78 0.006

CRP (ng/mL), mean (SD) 3902 ± 2929 3933 ± 3164 0.956 2518 ± 1951 3130 ± 2339 0.161

IL-6 (pg/mL), mean (SD) 2.40 ± 2.16 2.49 ± 2.56 0.833 1.81 ± 1.39 2.34 ± 2.67 0.229

IL-8 (pg/mL), mean (SD) 6.22 ± 9.77 5.01 ± 4.50 0.351 3.50 ± 4.78 2.99 ± 2.85 0.503

TGF-ββββ1 (ng/mL), mean (SD) 23.12 ± 15.69 23.62 ± 15.70 0.860 23.65 ± 12.55 18.00 ± 14.63 0.042

BDNF (ng/mL), mean (SD) 9.08 ± 6.11 11.35 ± 8.49 0.098 9.00 ± 4.74 8.87 ± 5.91 0.905

Methadone dosage (mg) 34.32 ± 20.00 36.07 ± 22.90 0.655 35.84 ± 22.40 44.14 ± 24.22 0.082

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Changes in Methadone dosage and cytokines Changes in Methadone dosage and cytokines Changes in Methadone dosage and cytokines Changes in Methadone dosage and cytokines after after after after memantinememantinememantinememantine or placebo or placebo or placebo or placebo treatmenttreatmenttreatmenttreatment

Parameter Estimate SE t p-value

Primary Outcome

Methadone Dose Required −0.948 0.446 −2.128 0.034*

% of Change from baseline of Methadone Dose Required −0.031 0.014 −2.242 0.025*

Secondary Outcome

TNF-αααα (pg/mL) −0.035 0.012 −2.924 0.004**

CRP (pg/mL) −0.017 0.010 −1.630 0.104

IL-6 (pg/mL) 0.003 0.010 0.283 0.777

IL-8 (pg/mL) −0.016 0.017 −0.921 0.357

TGF-ββββ1 (pg/mL) 0.028 0.012 2.403 0.017*

BDNF 312.75 212.40 1.472 0.142

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Change of Methadone Change of Methadone Change of Methadone Change of Methadone dose dose dose dose in in in in memantinememantinememantinememantineand placebo and placebo and placebo and placebo after after after after 12 weeks of treatment12 weeks of treatment12 weeks of treatment12 weeks of treatment

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Change of Methadone Change of Methadone Change of Methadone Change of Methadone dose dose dose dose normalized using normalized using normalized using normalized using the baseline the baseline the baseline the baseline ((((week 0 = 100%) week 0 = 100%) week 0 = 100%) week 0 = 100%) after after after after treatmenttreatmenttreatmenttreatment

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CommentsCommentsCommentsComments• Low dose memantine (5mg/day)• Plasma level 10–50 ng/ml (0.05–0.2 μM)• No effect in NMDA receptor antagonist

(IC50: 2–3 μM) (Parsons et al. 1999)

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(IC50: 2–3 μM) (Parsons et al. 1999)

• Effective in morphine addiction with methadone treatmentInhibition of methadone dosage & tolerance (important factors of addiction)

• Benefit in neuroprotection and decreasing neurodegeneration

(Chen et al. 2013)

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Potential beneficial effects of anti-inflammation-related drugs

• AddictionAddictionAddictionAddiction– Opiate abuse– Alcohol abuse – Smoking – Compulsive eating

disorder

• Peripheral diseases– Asthma– Arthritis – Arteriosclerosis– Cancer– Diabetes disorder

• CNS diseasesCNS diseasesCNS diseasesCNS diseases– Bipolar disorders– Depression– Schizophrenia– Alzheimer’s dis.– Brain ischemia – Parkinson’s dis.– MS – Spinal injury

– Diabetes – Heart attack– Hepatitis – Inflammatory pain– Crohn’s dis. – Lupus – Sepsis

(endotoxemia)

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Peripheral effect in animal and

human

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Dextromethorphan (DM) decreases high lipid diet-inducedatherosclerotic lesion formation in apo-E-deficient mice

15

20

25

*

Le

sio

n a

rea

(%

)

Control DM(10mg/kg)

The lipid-rich atherosclerotic lesions were

identified with Oil-Red-O staining.

PBS 5 10 20 400

5

10 **

DM (mg/kg)L

esio

n a

rea

(%

)

DM(20 mg/kg) DM(40 mg/kg)

(Liu et al. 2009)

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ConclusionsConclusionsConclusionsConclusions

• Regulating over-inflammation and/or autoimmune

effectiveness from central to peripheral

• Treatment symptoms and treatment progress

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Acknowledgement

• Professor Jau-Shyong Hong, PhD.

• Professor Pao-Luh Tao, PhD.

• Professor San-Yuan Huang, MD., PhD.• Professor Yen Kung Yang, MD. • Associate professor Hung-Ming Wu, MD., PhD.• Associate professor Hung-Ming Wu, MD., PhD.

• Associate professor Po See Chen, MD., PhD• Shiou-Lan Chen, PhD.

• Shih-Heng Chen, PhD.

• Chun-Hsien, Chu, PhD.

• Sheng-Yu, Lee MD, MS.• Yun-Hsuan Chang, Ph.D

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Page 44: AntiAnti----Inflammation and Inflammation and Inflammation ... · AntiAnti----Inflammation and Inflammation and Inflammation and neuroprotective neuroprotective drugs benefit the

Thank you44