Mapping the intellectual structure and emerging trends for the application of nanomaterials in gastric cancer: A bibliometric study

Table 6 Clusters of the top 100 keywords

Cluster	Keywords	Counts	Rank	Cluster	Keywords	Counts	Rank
1	Nanoparticles	389	1	2	DNA	42	35
1	Drug-delivery	193	3	2	Stem-cells	42	36
1	Cancer	187	5	2	Northern jiangsu	41	40
1	Delivery	182	6	2	Toxicity	40	43
1	In-vitro	182	7	2	Gastric-cancer risk	39	44
1	Therapy	134	9	2	Diagnosis	35	53
1	Release	104	11	2	Antioxidant	34	55
1	In-vivo	76	14	2	Oxidative stress	33	61
1	Chemotherapy	65	17	2	Mechanism	32	63
1	Doxorubicin	64	18	2	Quantum dots	32	64
1	Paclitaxel	55	23	2	Infection	32	65
1	Design	49	27	2	Complexes	30	70
1	Stability	48	28	2	Graphene oxide	29	72
1	Bioavailability	44	30	2	Model	28	74
1	Drug	44	31	2	Proteins	28	75
1	Combination	41	38	2	Binding	27	77
1	Acid	41	39	2	Gold nanorods	27	78
1	System	40	41	2	Sensitive detection	26	81
1	Tumor	40	42	2	Iron-oxide nanoparticles	25	87
1	Efficacy	38	45	2	Silver nanoparticles	25	88
1	Tumors	37	47	2	Induction	24	91
1	5-fluorouracil	36	48	2	Rapid detection	23	95
1	Chitosan	36	49	2	Nanocomposites	23	96
1	Size	36	50	2	Biomedical applications	22	98
1	Controlled-release	35	52	2	Green synthesis	22	99
1	Micelles	34	54	3	Gastric-cancer	219	2
1	Cisplatin	33	57	3	Expression	190	4
1	Nanocarriers	33	58	3	Cells	142	8
1	Pharmacokinetics	33	59	3	Breast-cancer	104	12
1	Cancer-cells	33	60	3	Growth	90	13
1	Carriers	32	62	3	Identification	73	15
1	Liposomes	31	67	3	Metastasis	64	19
1	Antitumor-activity	30	68	3	Carcinoma	60	20
1	Formulation	30	69	3	Proliferation	57	22
1	Oral delivery	29	71	3	Inhibition	55	24
1	Systems	28	73	3	Resistance	52	26
1	Polymeric micelles	26	80	3	Activation	45	29
1	Co-delivery	25	84	3	Lung-cancer	44	33
1	Microspheres	25	85	3	Gene	43	34
1	Inflammation	25	86	3	Colorectal-cancer	42	37
1	Permeability	24	90	3	Protein	38	46
1	Polymeric nanoparticles	23	92	3	Invasion	36	51
1	Multidrug-resistance	23	93	3	Adenocarcinoma	34	56
1	Ph	23	94	3	Survival	32	66
1	Absorption	22	97	3	Gene-expression	28	76
2	Apoptosis	124	10	3	Pathway	27	79
2	Magnetic nanoparticles	66	16	3	Micrornas	26	82
2	Gold nanoparticles	57	21	3	Progression	26	83
2	Cytotoxicity	54	25	3	Migration	25	89
2	Mechanisms	44	32	3	Differentiation	22	100