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Sildenafil

(Synonyms: UK-92480)

16 Cited Publications

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Based on 16 publication(s) in Google Scholar

Sildenafil (UK-92480) is a potent phosphodiesterase type 5 (PDE5) inhibitor with an IC₅₀ of 5.22 nM.

Para uso exclusivo en investigación. No vendemos a pacientes.

Pureza: 99.99%
No. CAS: 139755-83-2
Fòrmula: C₂₂H₃₀N₆O₄S
Peso molecular:474.58

Almacenamiento:

Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 1 year , -20°C, 6 months

Sildenafil Chemical Structure

No. CAS: 139755-83-2

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Top Publications Citing

Use of MCE Products

Fluorescent Dye

Strong Fluorescence Signal / Multi-Disciplinary Applications / High Fluorescence Specificity

Actividad biológica
- Descripciòn
- IC₅₀ & Target
- Cellular Effect
- In Vitro
- In Vivo
- Ensayo clínico
Chemical Information
Publications (16)
Solvente y solubilidad
- In Vitro
- In Vivo
Protocolo
Pureza y Documentación
Referencias
Help & FAQs
Classifications
Bioz

Actividad biológica

Descripciòn

Sildenafil (UK-92480) is a potent phosphodiesterase type 5 (PDE5) inhibitor with an IC₅₀ of 5.22 nM.

IC₅₀ & Target

PDE5

Ver todos los productos específicos de isoformas Phosphodiesterase (PDE) :

Cellular Effect

Cell Line	Type	Value	Description	References
A549	IC₅₀	>500 μM Compound: Sildenafil	Antiproliferative activity against human A549 cells measured after 48 hrs by MTT assay Antiproliferative activity against human A549 cells measured after 48 hrs by MTT assay	[PMID: 39149110]
COS-7	IC₅₀	0.075 μM Compound: sildenafil	Inhibition of human recombinant PDE5A1 expressed in COS7 cells Inhibition of human recombinant PDE5A1 expressed in COS7 cells	[PMID: 18778098]
HEK293	IC₅₀	20 μM Compound: Sildenafil	TP_TRANSPORTER: inhibition of 9-(2-phosphonomethoxyethyl)adenine(PMEA) efflux (PMEA: 1 uM) in MRP4-expressing HEK293 cells TP_TRANSPORTER: inhibition of 9-(2-phosphonomethoxyethyl)adenine(PMEA) efflux (PMEA: 1 uM) in MRP4-expressing HEK293 cells	[PMID: 12695538]
HEK293	IC₅₀	80 μM Compound: Sildenafil	TP_TRANSPORTER: inhibition of 9-(2-phosphonomethoxyethyl)adenine(PMEA) efflux (PMEA: 1 uM) in MRP5-expressing HEK293 cells TP_TRANSPORTER: inhibition of 9-(2-phosphonomethoxyethyl)adenine(PMEA) efflux (PMEA: 1 uM) in MRP5-expressing HEK293 cells	[PMID: 12695538]
HEK-293T	IC₅₀	>100 μM Compound: Sildenafil	Inhibition of mouse Ido1 transfected in HEK293T cells using L-tryptophan as substrate assessed as kynurenine formation after 45 mins by spectrophotometric analysis Inhibition of mouse Ido1 transfected in HEK293T cells using L-tryptophan as substrate assessed as kynurenine formation after 45 mins by spectrophotometric analysis	[PMID: 23122865]
HEK-293T	IC₅₀	4.5 μM Compound: Sildenafil	Inhibition of mouse Ido2 transfected in HEK293T cells using L-tryptophan as substrate assessed as kynurenine formation after 45 mins by spectrophotometric analysis Inhibition of mouse Ido2 transfected in HEK293T cells using L-tryptophan as substrate assessed as kynurenine formation after 45 mins by spectrophotometric analysis	[PMID: 23122865]
NCI-H1299	IC₅₀	>500 μM Compound: Sildenafil	Antiproliferative activity against human NCI-H1299 cells measured after 48 hrs by MTT assay Antiproliferative activity against human NCI-H1299 cells measured after 48 hrs by MTT assay	[PMID: 39149110]
NCI-H661	IC₅₀	>500 μM Compound: Sildenafil	Antiproliferative activity against human NCI-H661 cells measured after 48 hrs by MTT assay Antiproliferative activity against human NCI-H661 cells measured after 48 hrs by MTT assay	[PMID: 39149110]
Sf9	IC₅₀	5.6 nM Compound: 1	Inhibition of human PDE5A1 expressed in baculovirus in sf9 cells by PDE Glo phosphodiesterase assay Inhibition of human PDE5A1 expressed in baculovirus in sf9 cells by PDE Glo phosphodiesterase assay	[PMID: 25801159]
Sf9	IC₅₀	2.2 nM Compound: CHEMBL192	Inhibition of recombinant human PDE5A1 catalytic domain (535 to 860 residues) expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate incubated for 15 mins by liquid scintillation counting method Inhibition of recombinant human PDE5A1 catalytic domain (535 to 860 residues) expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate incubated for 15 mins by liquid scintillation counting method	[PMID: 26908025]
Sf9	IC₅₀	4 nM Compound: 1	Inhibition of full length recombinant human N-terminal GST-tagged PDE5A1 expressed in baculovirus infected Sf9 cells using cGMP as substrate after 30 mins by HTRF assay Inhibition of full length recombinant human N-terminal GST-tagged PDE5A1 expressed in baculovirus infected Sf9 cells using cGMP as substrate after 30 mins by HTRF assay	[PMID: 27606546]
Sf9	IC₅₀	>10000 nM Compound: Sildenafil	Inhibition of human PDE2A1 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of human PDE2A1 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	>10000 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged full length human PDE9A2 expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged full length human PDE9A2 expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	>10000 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged human PDE10A expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged human PDE10A expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	>10000 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged human PDE3 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged human PDE3 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	>10000 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged human PDE4 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged human PDE4 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	>10000 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged human PDE7 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged human PDE7 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	36.42 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged human PDE6C expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged human PDE6C expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	4.31 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged human PDE5A1 expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged human PDE5A1 expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	4930 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged human PDE11A4 expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged human PDE11A4 expressed in baculovirus infected sf9 cells using [3H]cGMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	819 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged human PDE1 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged human PDE1 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]
Sf9	IC₅₀	>10000 nM Compound: Sildenafil	Inhibition of N-terminal GST-tagged full length human PDE8A1 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay Inhibition of N-terminal GST-tagged full length human PDE8A1 expressed in baculovirus infected sf9 cells using [3H]cAMP as substrate measured after 30 mins by scintillation proximity assay	[PMID: 31021628]

In Vitro

Pretreatment with 1 μM Sildenafil potentiates the phosphorylation of ERK1/ERK2, an increase in the percentage of cells in S phase and cell proliferation, compared with serotonin stimulation alone (P<0.05). Pretreatment with 1 μM Sildenafil citrate followed by serotonin stimulation leads to dramatic increase in OD value to 0.33, significantly different compared with serotonin stimulation alone (P<0.05). 1 μM Sildenafil obviously enhances the upregulation of ERK1/ERK2 phosphorylation induced by serotonin^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

In the dog model of erection, Sildenafil citrate significantly increases ICP and ICP/BP but shows no significant effect on BP compared with vehicle^[1]. Sildenafil treatment significantly decreases the number of TL⁺-cells at 10 but not 0.5 mg/kg. 8 days after pMCAo the number of microglia/macrophages stained by Iba-1 are significantly reduced by Sildenafil treatment (0.5 and/or 10 mg/kg dose)^[3]. Sildenafil citrate has been reported to decrease flap necrosis in preclinical animal models by increasing the secretion of growth factors (FGF and VEGF), and histologically is shown to be effective in rat cavernous nerve architecture^[4].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Ensayo clínico

NCT Number	Sponsor	Condition	Start Date	Phase A549
NCT01329991	Plexxikon\|		2011-05	PHASE1

Chemical Information

No. CAS 139755-83-2
Appearance Solid
Peso molecular 474.58
Fòrmula C₂₂H₃₀N₆O₄S
Color White to off-white
SMILES

O=C1C(N(C)N=C2CCC)=C2N=C(C3=CC(S(=O)(N4CCN(C)CC4)=O)=CC=C3OCC)N1
Synonyms

UK-92480
Envío

Room temperature in continental US; may vary elsewhere.

Almacenamiento

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	1 year
	-20°C	6 months

Publications (16)

All Bio/Physico-chemical AssayRT-PCRIn Vivo Efficacy StudyWBHistological Imaging/StainingIHCCell Proliferation/Viability AssayCell Migration/Invasion AssayApoptosis AnalysisIF

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Journal Impact Factor

Nature

Rescuing dendritic cell interstitial motility sustains antitumour immunity. [Abstract]

2025 Sep;645(8079):244-253. PMID: 40562926

Sildenafil purchased from MedChemExpress. Usage Cited in: Nature. 2025 Sep;645(8079):244-253. [Abstract]

The mean velocities of immature BMDCs in 3D collagen gel treated with vehicle, 30 μM Sildenafil or sildenafil plus 10 μM ODQ. From left to right, n = 98, 79, 126 cells.

Sildenafil purchased from MedChemExpress. Usage Cited in: Nature. 2025 Sep;645(8079):244-253. [Abstract]

Tumour growth and survival curves of MC38-Pde5−/− tumour-bearing mice treated with vehicle or Sildenafil (20 μg/g).
Phytomedicine

Crocin inhibits neutrophil migration and activation to treat hypoxic pulmonary hypertension through targeting HCK. [Abstract]

2025 Sep 25:148:157334. PMID: 41043333
ACS Environ Au

Machine Learning-Assisted Recognition of Environmental Sulfur-Containing Chemicals in Nontargeted Mass Spectrometry Analysis of Inadequate Mass Resolution. [Abstract]

2025 Aug 5;5(6):573-582. PMID: 41277996
Br J Pharmacol

An adenosinergic positive feedback loop extends pharmacological cardioprotection duration. [Abstract]

2024 Dec;181(23):4920-4936. PMID: 39256947
Anal Chem

Exposome-Scale Investigation of Cl-/Br-Containing Chemicals Using High-Resolution Mass Spectrometry, Multistage Machine Learning, and Cloud Computing. [Abstract]

2025 Jun 3;97(21):11099-11109. PMID: 40401576
Phytother Res

Celastrol Ameliorates Hypoxia-Induced Pulmonary Hypertension by Regulation of the PDE5-cGMP-PKG Signaling Pathway. [Abstract]

2025 Mar;39(3):1549-1564. PMID: 39887769

Sildenafil purchased from MedChemExpress. Usage Cited in: Phytother Res. 2025 Mar;39(3):1549-1564. [Abstract]

Sildenafil citrate (SN, 25 mg/kg; oral gavage; once a day for 21 days). Summarized values of right ventricular systolic pressure (RVSP).

Sildenafil purchased from MedChemExpress. Usage Cited in: Phytother Res. 2025 Mar;39(3):1549-1564. [Abstract]

Sildenafil citrate (SN, 25 mg/kg; oral gavage; once a day for 21 days). Histological images with H&E staining of RV cross- sectional cells and representative views of Masson's trichrome staining to detect RV fibrosis, Scale bar, 20 μm.

Sildenafil purchased from MedChemExpress. Usage Cited in: Phytother Res. 2025 Mar;39(3):1549-1564. [Abstract]

Sildenafil citrate (SN, 25 mg/kg; oral gavage; once a day for 21 days). Immunohistochemistry staining of lung samples for α-SMA, and the expression of Ki-67 and PCNA in pulmonary arteries was verified by immunohistochemistry staining.Scale bar, 20 μm.

Sildenafil purchased from MedChemExpress. Usage Cited in: Phytother Res. 2025 Mar;39(3):1549-1564. [Abstract]

Sildenafil citrate (SN, 25 mg/kg; oral gavage; once a day for 21 days). Western blot on PDE5 and PKG in mice lung tissue, n = 3.

Sildenafil purchased from MedChemExpress. Usage Cited in: Phytother Res. 2025 Mar;39(3):1549-1564. [Abstract]

Sildenafil citrate (SN, 1 μM; 24 h). Quantitative measurement of EdU incorporation into HPASMCs.

Sildenafil purchased from MedChemExpress. Usage Cited in: Phytother Res. 2025 Mar;39(3):1549-1564. [Abstract]

Sildenafil citrate (SN, 1 μM; 24 h). Summarized data showing the number of migrating cells.

Sildenafil purchased from MedChemExpress. Usage Cited in: Phytother Res. 2025 Mar;39(3):1549-1564. [Abstract]

Sildenafil citrate (SN, 1 μM; 24 h). Summary data showing the number of apoptotic HPASMCs.
Bioeng Transl Med

Ultrasound-targeted microbubble destruction mediates PDE5i/NO integration for cavernosum remodeling and penile rehabilitation. [Abstract]

2023 Jul 2;8(5):e10568. PMID: 37693040
Int J Mol Sci

A Dual-Acting Nitric Oxide Donor and Phosphodiesterase 5 Inhibitor Activates Autophagy in Primary Skin Fibroblasts. [Abstract]

2022 Jun 20;23(12):6860. PMID: 35743299

Sildenafil purchased from MedChemExpress. Usage Cited in: Int J Mol Sci. 2022 Jun 20;23(12):6860. [Abstract]

P62 mRNA levels in NHF upon Sildenafil treatment (100 μM, 6 h) in presence or absence of ConA (2.5 nM, 2 h).

Sildenafil purchased from MedChemExpress. Usage Cited in: Int J Mol Sci. 2022 Jun 20;23(12):6860. [Abstract]

Analysis of the autophagic flux in NHF upon treatment with Sildenafil (100 μM, 24 h) in presence or absence of ConA (2.5 nM; 2 h).
ACS Omega

Computational Approaches to Identify Molecules Binding to Mycobacterium tuberculosis KasA. [Abstract]

2020 Nov 15;5(46):29935-29942. PMID: 33251429
Biochim Biophys Acta Mol Basis Dis

OTUD1 promotes isoprenaline- and myocardial infarction-induced heart failure by targeting PDE5A in cardiomyocytes. [Abstract]

2024 Mar;1870(3):167018. PMID: 38185350
Sci Rep

Characterization of five novel vasopressin V2 receptor mutants causing nephrogenic diabetes insipidus reveals a role of tolvaptan for M272R-V2R mutation. [Abstract]

2020 Oct 2;10(1):16383. PMID: 33009446
Saudi Pharm J

Fisetin alleviates pulmonary arterial hypertension by inhibiting the TGF-β1/Smad 2/3 signaling pathway. [Abstract]

2026 Jun 25;34(3):39. PMID: 42347890
J Nat Med

Nobiletin alleviates hypoxia-induced pulmonary hypertension by inhibiting calcium-sensing receptor. [Abstract]

2025 Sep;79(5):1154-1166. PMID: 40581895
Biochem Biophys Res Commun

Lactic acid inhibits iNKT cell functions via a phosphodiesterase-5 dependent pathway. [Abstract]

2021 Apr 2:547:9-14. PMID: 33588236
Physiol Rep

β3 adrenergic agonism: A novel pathway which improves right ventricular-pulmonary arterial hemodynamics in pulmonary arterial hypertension. [Abstract]

2023 Jan;11(1):e15549. PMID: 36597221

Sildenafil purchased from MedChemExpress. Usage Cited in: Physiol Rep. 2023 Jan;11(1):e15549. [Abstract]

The index of cell proliferation in the lungs is significantly reduced in hypoxic mice that received CL316243, Sildenafil (50 mg/kg), or riociguat compared with hypoxic mice treated with vehicle.
Biomed Chromatogr

A novel standard-free detection of adulteration method for sildenafil derivatives in dietary supplements. [Abstract]

2024 Jun 5:e5925. PMID: 38837800

Solvente y solubilidad

In Vitro:

DMSO : 100 mg/mL (210.71 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H₂O : < 0.1 mg/mL (insoluble)

View the Complete Stock Solution Preparation Table

Preparing Stock Solutions

View the Complete Stock Solution Preparation Table

Concentration Solvent Mass

1 mg

5 mg

10 mg

Concentration

Solvent

Mass

1 mM

2.1071 mL

10.5356 mL

21.0713 mL

5 mM

0.4214 mL

2.1071 mL

4.2143 mL

10 mM

0.2107 mL

1.0536 mL

2.1071 mL

Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.

Storage method and period of stock solution: -80°C, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

Calculadora de molaridad

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass Mass

Concentration Concentration

Volume Volume

Molecular Weight Molecular Weight

Calculadora de dilución

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

Concentration _(start) Concentration _(start)

Volume _(start) Volume _(start)

Concentration _(final) Concentration _(final)

Volume _(final) Volume _(final)

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

Stock Solution Working Solution

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

Protocol 1

Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline

Solubility: ≥ 2.5 mg/mL (5.27 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

Protocol 2

Add each solvent one by one: 10% DMSO 90% Corn Oil

Solubility: ≥ 2.5 mg/mL (5.27 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

Working Solution

For the following dissolution methods, please prepare the working solution directly:

It is recommended to prepare fresh solutions and use them promptly within a short period of time.

The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

Protocol 1

Add each solvent one by one: 0.5% CMC-Na/1% Tween-80 in Saline water

Solubility: 4.95 mg/mL (10.43 mM); Suspended solution; Need ultrasonic

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage Dosage
mg/kg
Animal Weight (Per Animal) Animal Weight (Per Animal)
g
Dosing Volume (Per Animal) Dosing Volume (Per Animal)
μL
Number of Animals Number of Animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Please enter your animal formula composition:

%
DMSO +

Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
%
+
+
%
Tween-80 + +
%
Saline +

The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).

Working solution concentration: 0.22 mg/mL

Protocolo

Cell Assay^[2]

Cells at approximately 90% confluence are harvested with 0.1% trypsin/0.01% ethylene diamine tetraacetic acid (EDTA) solution and seeded into a 96-well plate at a density of 2×10⁴ cells/well and grown in RPMI-1640 containing 10% FBS for three days, followed by serum starvation for three days. Cells are then incubated for different time with various concentration of serotonin or 1 μM Sildenafil followed by serotonin with or without U0126, as indicated. Control cells are treated in the same way except sterile PBS replaced the drug. After treatment, medium is changed to fresh medium, and cells are incubated with 5 g/L of MTT for four hours. MTT is then dissolved with 150 μL of 10% DMSO for 20 minutes. The optical densities (OD) in the 96-well plates are determined using a microplate reader at 570 nm^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration^[3]^[4]

Mice^[3]
Ischemia is induced in C57Bl/6 mice on postnatal (P) day 9 by permanent middle cerebral artery occlusion (pMCAo), and followed by either PBS or Sildenafil intraperitoneal (i.p.) injections. In the first set of experiments, animals are randomly divided into five groups and treated with either PBS or a single dose of Sildenafil citrate (0.5, 2.5, 10, and 15 mg/kg), given intraperitoneally (i.p.) 5 min after pMCAo. In the second set of experiments, animals are randomly divided into three groups and treated with either PBS or a single dose of Sildenafil citrate (0.5 and 10 mg/kg, i.p.) 5 min after pMCAo.
Rats^[4]
Thirty male Sprague-Dawley rats weighing between 210 and 240 g are used. Rats from all groups are anesthetized with xylazine + ketamine and then a crush injury is created by using a one-minute long vascular clamp to the right sciatic nerve. One day before the procedure, rats from Group 1 are started on a 28-day treatment consisting of a daily dose of 20 mg/kg body weight Sildenafil given orally via nasogastric tube, while the rats from Group 2 are started on an every-other-day dose of 10 mg/kg body weight Sildenafil citrate. Rats from Group 3 did not receive any drugs. Subjects in all 3 groups are fed ad libitum with normal rat chow and tap water. Forty-two days after the nerve damage is created, the rats underwent a static sciatic index (SSI) test, sedation and motor coordination tests, and accelerated rotarod tests. Rats are sacrificed under anesthesia and their sciatic nerves are removed surgically. Histopathologic analyses of the nerves and bone densitometry evaluation of the extremities are then performed.

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Pureza y Documentación

Select Batch:

Pureza: 99.98%

Assay: 99.98%

ee.: 99.98%

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Referencias

[1]. Wang Z, et al. The Selectivity and Potency of the New PDE5 Inhibitor TPN729MA. J Sex Med. 2013 Nov;10(11):2790-7. [Content Brief]

[2]. Li BB, et al. Sildenafil potentiates the proliferative effect of porcine pulmonary artery smooth muscle cells induced by serotonin in vitro. Chin Med J (Engl). 2011 Sep;124(17):2733-40. [Content Brief]

[3]. Moretti R, et al. Sildenafil, a cyclic GMP phosphodiesterase inhibitor, induces microglial modulation after focal ischemia in the neonatal mouse brain. J Neuroinflammation. 2016 Apr 28;13(1):95. [Content Brief]

[4]. Korkmaz MF, et al. The Effect of Sildenafil on Recuperation from Sciatic Nerve Injury in Rats. Balkan Med J. 2016 Mar;33(2):204-11. [Content Brief]

Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

Complete Stock Solution Preparation Table

Storage method and period of stock solution: -80°C, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg
DMSO	1 mM	2.1071 mL	10.5356 mL	21.0713 mL	52.6782 mL
	5 mM	0.4214 mL	2.1071 mL	4.2143 mL	10.5356 mL
	10 mM	0.2107 mL	1.0536 mL	2.1071 mL	5.2678 mL
	15 mM	0.1405 mL	0.7024 mL	1.4048 mL	3.5119 mL
	20 mM	0.1054 mL	0.5268 mL	1.0536 mL	2.6339 mL
	25 mM	0.0843 mL	0.4214 mL	0.8429 mL	2.1071 mL
	30 mM	0.0702 mL	0.3512 mL	0.7024 mL	1.7559 mL
	40 mM	0.0527 mL	0.2634 mL	0.5268 mL	1.3170 mL
	50 mM	0.0421 mL	0.2107 mL	0.4214 mL	1.0536 mL
	60 mM	0.0351 mL	0.1756 mL	0.3512 mL	0.8780 mL
	80 mM	0.0263 mL	0.1317 mL	0.2634 mL	0.6585 mL
	100 mM	0.0211 mL	0.1054 mL	0.2107 mL	0.5268 mL

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Sildenafil

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