Review Article

A Review of the Pharmacological Effects of the Dried Root of Polygonum cuspidatum (Hu Zhang) and Its Constituents

Table 2

A summary of Hu Zhang’s and its major constituents’ pharmacological activities.

Types of pharmacological activitiesTypes of active extract
or compounds
Types of
experiments
Testing subjects
Administration route
Description of the effectsReference

Antiviral activitiesEthanol extract
Resveratrol, (+)-catechin
Emodin
8-O-β-D-glucopyranoside
In vitro C8166 lymphocytesInhibit HIV-1-induced syncytium formation[15]
Water and ethanol extractIn vitro HepG2 2.2.15 cells Inhibit the production of HBV
Increase the expression of HBsAg
Inhibit the expression of HBeAg
[16]

Antimicrobial effectsHu zhang fraction F1In vitro Streptococcus mutans Enhance fluoride activity against S.mutans virulence
Inhibit F-ATPase activity and acid production of S.mutans in biofilms
[18]
Ethanol extract
Emodin
In vitro RAW 264.7
Hela cells
Protect RAW 264.7 and Hela cells from V. vulnificus-induced cytotoxicity
Inhibit V. vulnificus growth and survival in seawater and heart infusion broth
[20]
In vivo CD-1 mice
Intraperitoneal route
Protect 8-week-old CD-1 mice infected with V. vulnificus

    
    
Anti-inflammatory effects
Ethyl acetate extractIn vivo Sprague-Dawley rats
Orally administered
Suppress serotonin-induced swelling
Suppress FCA-induced joint swelling
Inhibit positive responses of c-reactive protein and rheumatoid factor
[29]
PolydatinIn vivo Male Sprague-Dawley
Rats
Intraperitoneal route
Upregulate CCSP to inhibit PLA2[30]
In vitro BEAS-2B cellsPromote the expression of CCSP in normal and LPS-stimulated cells
PolydatinIn vivo Male ICR mice
Orally administered
Suppress levels of MDA, TNF- , IL-1β, COX-2, iNOS, and NFκB
Enhance levels of SOD, GSH, GST, CAT, GPx, and TGF-
[31]
Hu zhang extract In vitro Mononuclear cells
Decrease levels of TNF- , IL-6, intranuclear NFκB binding, JNK-1, PTP-1B, and ROS generation[32]

    
    
  Anti-inflammatory effects
EmodinIn vitro RAW 264.7 macrophagesInhibit the expression of iNOS, TNF- , interleukin 10, IKK-alpha, IKK-gamma, and the nuclear translocation of NFκB[33]
CitreoroseinIn vitro Mouse bone marrow-derived mast cellsInhibit COX-2-dependent prostaglandin D2 generation and COX-2 expression through inhibition of the Akt and JNK pathways[34]
Ethanolic extract of resveratrolIn vivo Female Swiss Webster mice
Injectd in the inner and outer ear surfaces
Inhibit the development of edema and leukocyte infiltration [35]
Resveratrol In vivo Female ICR mice
Topically to the
dorsal shaven area
Inhibit TPA-induced COX-2 expression via modulation of the IKK-NFκB signaling cascade in mouse skin[36]

Neuroprotective activitiesPolydatinIn vivo Male Sprague–Dawley rats
Sublingual vena injection
Reduce the volume of cerebral infraction
Improve rat neurological deficits
Protect the brain from injury by inhibiting the expression ICAM-1,VCAM-1, L-selectin, and E-selectin
[40]
PolydatinIn vivo Male Sprague-Dawley rats
Orally administered
Attenuate cognitive deficits induced by chronic cerebral hypoperfusion in rats
Decrease the production of MDA
Increase the activities of SOD and CAT
[41]
In vitro Rat’s primary cortical neuronsAlleviate the injuries of primary cortical neurons induced by OGD
Emodin 8-O-β-D-glucopyranosideIn vivo Male Wistar rats
Tail vein injection
Reduce the neurological deficit score and the cerebral infraction area
Decrease MDA level in the brain
Increase SOD activity
[42]
In vitro Primary cortical cellsDecrease LDH release
Increase mitochondrial activity

Neuroprotective activities2-Methoxy-6-acetyl-7-methyljugloneIn vitro PC12 cellsEnhance antioxidative effect
Decrease the expressions of the phosphorylation of ERK1/2, JNK, and p38 MAPK
[43]
ResveratrolIn vivo Male Sprague-Dawley rats
Intragastric gavage
Increase the SOD and GPx activities
Decrease MDA level
Improve neuromuscular coordination and sensorimotor ability in tightrope test
Enhance the learning and memory capacity in Morris water maze test in SAM
[44]

Cardioprotective activitiesPolydatinIn vivo Female Japanese Giant Ear
Rabbits
Orally administrated
Reduce the serum levels of triglycerides, total cholesterol, and LDL[47]
PolydatinIn vivo Male Sprague-Dawley rats
Intravenously administrated
Activate PKC and open mitochondrial ATP-sensitive K+ channel
Attenuate changes in MDA and SOD
[48]

  
  
  
  
Cardioprotective activities
PolydatinIn vivo Male Kunming mice
Male Sprague-Dawley rats
Intragastrically administrated
Inhibit the activation of RAAS and decrease the excretion of endothelin-1,
TNF- , and angiotensin II
[49]
ResveratrolIn vitro Human cardiac AC16 cellsActivate STAT3 signaling
Induce the expression of Bcl-xL
[50]
ResveratrolIn vivo Male apo E−/− mice semisynthetic dietElevate apo-AI/apo B ratio and levels of HDL-cholesterol
Decrease plasma LDL-C concentration and hepatic HMG-CoA reductase activity, ICAM-1, and VCAM-1 expression
[51]
Resveratrol In vivo Male Sprague–Dawley rats
Gavage administered
Improve cardiac function and reduce myocardial infarct size and cardiomyocyte apoptosis in the IR rat heart
Restore the IR-induced altered microRNA expressions
[52]

Radiotherapeutic effectResveratrolIn vivo ICR mice
Intraperitoneally administered
Protect salivary glands against radiation-induced dysfunction in mice
Reverse the reduction of saliva secretion and restore salivary amylase and SOD activity
[58]

Chemopreventive and antitumor effectsResveratrolIn vitro Human NPC cell lines
Cancer stem cells
Impede CSCs properties through the activation of p53
Suppress the stemness and EMT through reactivating p53 and inducing miR-145 and miR-200c
[59]
ResveratrolIn vitro MCF-7 breast cancer cellsInhibit HSP expression
Improve the therapeutic effects of doxorubicin
[60]

Estrogen-like activitiesEmodin
Emodin-
8-O-β-D-glucopyranoside
In vitro MCF-7 cellsEnhance the proliferation of MCF-7
Exert estrogen-like activities by binding to human ER and ERβ
[53]
CitreoroseinIn vitro Recombinant yeast
(Saccharomyces cerevisiae strain BJ3505)
Possess estrogenic activity [55]

Cosmeceutical and dermatological effectsPhyscion,
Emodin
Citreorosein
In vitro Dorsal skin from pigsInhibit tyrosinase activity and exert higher permeability into the skin[54]