Patterns of cell proliferation and apoptosis by topographic region in normal Bos taurus vs. Bos indicus crossbreeds bovine placentae during pregnancy

Facciotti, Patricia R; Rici, Rose EG; Maria, Durvanei A; Bertolini, Marcelo; Ambrósio, Carlos E; Miglino, Maria A

doi:10.1186/1477-7827-7-25

Table 1 Distribution of the cell cycle phases (in %) in distinct topographic regions of placentae at different stages of gestation in cattle

From: Patterns of cell proliferation and apoptosis by topographic region in normal Bos taurus vs. Bos indicus crossbreeds bovine placentae during pregnancy

		Placental region
		Placentome
Cell cycle phase	Groups: Days in gestation	Total*	Central region	Edges	Interplacentomal region	Microplacentomes	Placentomal fusion
G2/M	G-I: 70 to 120	20.0 ± 11.4^{a, b}	16.7 ± 7.0^{a, b}	23.4 ± 15.9^a	23.6 ± 3.1^a	8.9 ± 6.2^{b, B}	7.7 ± 4.3^b
	G-II: 121 to 170	20.3 ± 10.2^a	18.9 ± 9.3^a	21.7 ± 11.1^a	18.3 ± 9.3^a	7.7 ± 2.1^{b, B}	5.4 ± 3.4^b
	G-III: 171 to 220	21.6 ± 12.1^{a, b}	19.6 ± 13.7^{a, b}	23.6 ± 10.6^a	17.6 ± 9.4^{a, b}	13.1 ± 12.4^{a, b}	7.3 ± 4.1^b
	G-IV: 221 to 290	18.8 ± 7.7	18.6 ± 5.9	19.0 ± 9.6	18.5 ± 6.5	21.8 ± 8.4^a	12.1 ± 11.3
S	G-I: 70 to 120	5.6 ± 3.5	5.7 ± 3.4	5.5 ± 3.6	5.6 ± 2.5	3.7 ± 3.1	3.1 ± 0.3
	G-II: 121 to 170	4.4 ± 0.9	4.6 ± 0.9	4.1 ± 1.1	3.0 ± 1.4	3.2 ± 0.7	3.4 ± 1.1
	G-III: 171 to 220	7.4 ± 4.6	10.2 ± 7.4	4.5 ± 1.8	5.0 ± 4.2	5.5 ± 4.6	3.6 ± 1.6
	G-IV: 221 to 290	5.6 ± 3.3	8.2 ± 4.9	3.0 ± 1.8	3.7 ± 2.6	4.4 ± 3.9	3.0 ± 1.5
G0/G1	G-I: 70 to 120	63.7 ± 16.3^{a, b}	67.0 ± 13.8^{a, b}	60.4 ± 18.9^a	57.0 ± 9.1^a	84.3 ± 11.8^b	80.5 ± 10.9^b
	G-II: 121 to 170	60.5 ± 18.1^a	64.6 ± 13.8^a	56.5 ± 22.3^a	64.3 ± 18.3^{a, b}	86.4 ± 2.0^b	87.7 ± 3.9^b
	G-III: 171 to 220	54.2 ± 20.7^a	62.2 ± 18.1^{a, b}	46.2 ± 23.4^a	67.6 ± 15.7^{a, b}	78.8 ± 18.5^b	83.0 ± 7.1^b
	G-IV: 221 to 290	56.1 ± 17.8	62.5 ± 10.0	49.8 ± 25.7	65.1 ± 15.8	71.2 ± 11.0	73.5 ± 22.1
Apoptosis	G-I: 70 to 120	10.7 ± 8.5^a	10.6 ± 8.5^a	10.7 ± 8.5^a	13.7 ± 9.8^a	3.0 ± 2.6^b	8.6 ± 8.5^a
	G-II: 121 to 170	14.8 ± 8.9^a	12.0 ± 5.7^{a, b}	17.7 ± 13.3^a	14.4 ± 8.9^a	2.7 ± 0.4^b	3.5 ± 0.7^b
	G-III: 171 to 220	16.9 ± 7.9^{a, b}	8.0 ± 3.7^b	25.7 ± 13.9^a	9.7 ± 8.2^b	2.7 ± 2.1^b	6.1 ± 3.3^b
	G-IV: 221 to 290	19.5 ± 8.3^{a, b}	10.7 ± 4.7^b	28.2 ± 17.2^a	12.7 ± 10.3^b	2.6 ± 1.1^b	11.4 ± 9.4^b

^a-e Values (mean ± SD) in the same row with different superscripts differ (P < 0.05).
^A-E Values (mean ± SD) in the same column with different superscripts differ (P < 0.05).
* Total means: central plus edges region of placentome

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