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1.
J Am Coll Health ; : 1-11, 2024 Jan 16.
Artigo em Inglês | MEDLINE | ID: mdl-38227926

RESUMO

OBJECTIVE: To examine family planning and fertility experiences and views, as well as desired parenthood timing and career plans, of diverse undergraduate pre-health students. PARTICIPANTS: 266 pre-health undergraduate students attending a Hispanic-Serving Institution in South Texas. METHODS: We conducted a cross-sectional, online survey with a purposive sample of undergraduate students and analyzed data descriptively. RESULTS: Most students desired children in the future but were concerned about planning the timing of parenthood against their career training. The results highlight the need to improve both family planning and fertility knowledge, based on a high unmet need for contraceptives, low perceived knowledge about fertility/infertility treatment, and a desire to learn more about planning the timing of their career training alongside parenthood. CONCLUSIONS: This study highlights potential gaps in reproductive health information and services among diverse, health-focused students needed to inform choices about the timing of their families and career training.

2.
J Cell Commun Signal ; 17(2): 321-332, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37202628

RESUMO

The liver has an inherent regenerative capacity via hepatocyte proliferation after mild-to-modest damage. When hepatocytes exhaust their replicative ability during chronic or severe liver damage, liver progenitor cells (LPC), also termed oval cells (OC) in rodents, are activated in the form of ductular reaction (DR) as an alternative pathway. LPC is often intimately associated with hepatic stellate cells (HSC) activation to promote liver fibrosis. The Cyr61/CTGF/Nov (CCN) protein family consists of six extracellular signaling modulators (CCN1-CCN6) with affinity to a repertoire of receptors, growth factors, and extracellular matrix proteins. Through these interactions, CCN proteins organize microenvironments and modulate cell signalings in a diverse variety of physiopathological processes. In particular, their binding to subtypes of integrin (αvß5, αvß3, α6ß1, αvß6, etc.) influences the motility and mobility of macrophages, hepatocytes, HSC, and LPC/OC during liver injury. This paper summarizes the current understanding of the significance of CCN genes in liver regeneration in relation to hepatocyte-driven or LPC/OC-mediated pathways. Publicly available datasets were also searched to compare dynamic levels of CCNs in developing and regenerating livers. These insights not only add to our understanding of the regenerative capability of the liver but also provide potential targets for the pharmacological management of liver repair in the clinical setting. Ccns in liver regeneration Restoring damaged or lost tissues requires robust cell growth and dynamic matrix remodeling. Ccns are matricellular proteins highly capable of influencing cell state and matrix production. Current studies have identified Ccns as active players in liver regeneration. Cell types, modes of action, and mechanisms of Ccn induction may vary depending on liver injuries. Hepatocyte proliferation is a default pathway for liver regeneration following mild-to-modest damages, working in parallel with the transient activation of stromal cells, such as macrophages and hepatic stellate cells (HSC). Liver progenitor cells (LPC), also termed oval cells (OC) in rodents, are activated in the form of ductular reaction (DR) and are associated with sustained fibrosis when hepatocytes lose their proliferative ability in severe or chronic liver damage. Ccns may facilitate both hepatocyte regeneration and LPC/OC repair via various mediators (growth factors, matrix proteins, integrins, etc.) for cell-specific and context-dependent functions.

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