PMID- 31244439 OWN - NLM STAT- MEDLINE DCOM- 20200831 LR - 20200831 IS - 1875-5739 (Electronic) IS - 1567-2026 (Linking) VI - 16 IP - 3 DP - 2019 TI - A Potential Role for the Existence of Pericytes in the Neurovascular Unit of the Sexually Dimorphic Nucleus of the Rat Preoptic Area to Control Blood-Brain Barrier Function. PG - 194-201 LID - 10.2174/1567202616666190627120135 [doi] AB - BACKGROUND: The present study aimed at determining pericytes, a missing component in the previously proposed living neurovascular unit (NVU) of the sexually dimorphic nucleus of the preoptic area (SDN-POA) in rats. MATERIALS AND METHODS: Calbindin D28K-immunoreactivities (CB28-irs) were used to delineate the SDN-POA in which CD13-immunoreactivities (CD13-irs) or alpha-smooth muscle actinimmunoreactivities (alphaSMA-irs), two pericyte biomarkers serving the indexes of pericytes, were tagged using two adjacent brain sections (90-micron intervals). In addition, the nestinimmunoreactive (nestin-ir) cells in the SDN-POA were counted as pericytes referring to additional standards: location and nucleic and cellular morphology. Male SDN-POA volume (5.0+/-0.3x10-3 mm3) was significantly larger than the female (1.7+/-0.3x10-3 mm3). Within the SDN-POA, the CD13-irs were characterized as dots, densely packed and net-like in distribution, while the alphaSMAirs, excluding pipe-like or circular structures, appeared as short rod-like structures that were sparsely distributed. RESULTS: The immunoreactive counts of alpha-smooth muscle actin were 353+/-57/mm2 in males and 124+/-46/mm2 in females (p<0.05). On the other hand, densities of the dot-like CD13-irs were similar between males (4009+/-301/mm2) and females (4018+/-414/ mm2). There was no difference between the male and the female in the nestin-ir pericyte count in the SDN-POA. CONCLUSION: In conclusion, the present study adds new information concerning pericytes to the living NVU of the SDN-POA. There is a difference of sex in the count of the alphaSMA-irs in the living NVU of the SDN-POA. However, why such a difference exists warrants further investigations. CI - Copyright(c) Bentham Science Publishers; For any queries, please email at epub@benthamscience.net. FAU - He, Zhen AU - He Z AD - Department of Neuroscience, HFT-132, National Center for Toxicological Research, Food and Drug Administration, 3900 NCTR Road, Jefferson AR 72079, United States. FAU - Patterson, Tucker A AU - Patterson TA AD - Office of the Director National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, United States. LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United Arab Emirates TA - Curr Neurovasc Res JT - Current neurovascular research JID - 101208439 SB - IM MH - Animals MH - Blood-Brain Barrier/*cytology/*physiology MH - Cell Count/methods MH - Female MH - Male MH - Pericytes/*physiology MH - Preoptic Area/*cytology/*physiology MH - Rats MH - Rats, Sprague-Dawley MH - *Sex Characteristics OTO - NOTNLM OT - Alpha-smooth muscle actin OT - CD13-immunoreactivity OT - living neurovascular unit OT - nestin OT - pericyte OT - sexually dimorphic nucleus. EDAT- 2019/06/28 06:00 MHDA- 2020/09/01 06:00 CRDT- 2019/06/28 06:00 PHST- 2019/04/23 00:00 [received] PHST- 2019/04/29 00:00 [revised] PHST- 2019/05/01 00:00 [accepted] PHST- 2019/06/28 06:00 [pubmed] PHST- 2020/09/01 06:00 [medline] PHST- 2019/06/28 06:00 [entrez] AID - CNR-EPUB-99250 [pii] AID - 10.2174/1567202616666190627120135 [doi] PST - ppublish SO - Curr Neurovasc Res. 2019;16(3):194-201. doi: 10.2174/1567202616666190627120135.