Application of regulation of reactive oxygen species and lipid peroxidation to disease treatment

Although many diseases in which reactive oxygen species (ROS) and free radicals are involved in their pathogenesis are known, and antioxidants that effectively capture ROS have been identified and developed, there are only a few diseases for which antioxidants have been used for treatment. Here, we discuss on the following four concepts regarding the development of applications for disease treatment by regulating ROS, free radicals, and lipid oxidation with the findings of our research and previous reports. Concept 1) Utilization of antioxidants for disease treatment. In particular, the importance of the timing of starting antioxidant will be discussed. Concept 2) Therapeutic strategies using ROS and free radicals. Methods of inducing ferroptosis, which has been advocated as an iron-dependent cell death, are mentioned. Concept 3) Treatment with drugs that inhibit the synthesis of lipid mediators. In addition to the reduction of inflammatory lipid mediators by inhibiting cyclooxygenase and leukotriene synthesis, we will introduce the possibility of disease treatment with lipoxygenase inhibitors. Concept 4) Disease treatment by inducing the production of useful lipid mediators for disease control. We describe the treatment of inflammatory diseases utilizing pro-resolving mediators and propose potential compounds that activate lipoxygenase to produce these beneficial mediators.

Maternal high-dose valacyclovir and its correlation with newborn blood viral load and outcome in congenital cytomegalovirus infection

BACKGROUND/OBJECTIVE

Currently, there is no validated treatment for fetal cytomegalovirus (CMV). Two studies suggest that high-dose maternal valacyclovir decreases fetal viral load and improves outcomes in moderately-symptomatic fetuses. We offered valacyclovir in cases of fetal infection lacking ultrasound abnormalities or with non-severe infection. Maternal tolerability, fetal outcome and newborn blood viral load were evaluated in pregnancies of mothers receiving valacyclovir.

STUDY DESIGN

We performed a case series including 8 pregnancies with fetal CMV classified as unaffected/mildly-moderately affected. Mothers received valacyclovir (8 g/24h) from fetal infection diagnosis to delivery. Standard newborn evaluation was performed, and viremia was determined in the first 48 h of life and compared according to length of maternal treatment and presence/absence of prenatal anomalies.

RESULTS

Valacyclovir was administered at a median gestational age of 26.5 weeks (23.8-33.1) in 3 cases without fetal abnormalities, and 5 with mild/moderate abnormalities. Three were 3 first trimester primary infections, one non-primary infection, and in 4 the type of infection was unknown. Valacyclovir was well-tolerated. Fetal features did not progress. Three newborns were asymptomatic, and one was severely affected (bilateral chorioretinitis). The median newborn viral load (IQR) was 502 IU/mL (231-191781) with lower levels when maternal treatment was administered ≥10 weeks, and in cases without fetal abnormalities [median 234 IU/mL (228-711) vs. 4061 (292-510500) p = .18; and 234 IU/mL (228-379500) vs. 711 IU/mL (292-4061) p = .65, respectively], these differences being non-significant.

CONCLUSIONS

Fetal CMV lesions remained stable with high-dose maternal valacyclovir. Newborn viral load was unchanged despite treatment duration and fetal/neonatal abnormalities.

SUMMARY

Fetal cytomegalovirus lesions remained stable with high-dose maternal valacyclovir. Newborn viral load was unchanged despite treatment duration and fetal/newborn abnormalities.

Integrative Review of Nursing Practices in Fetal Therapy

OBJECTIVE

To synthesize nursing practices related to fetal therapy (intervention to correct or treat a fetal anomaly).

DATA SOURCES

We searched electronic databases, including PubMed, Embase, OvidSP, and CINAHL, for all relevant published work. We identified additional resources through discussion with experts in the field, hand searches of relevant resources, and examination of the reference lists of articles in our search results.

STUDY SELECTION

Any published literature about fetal therapy in which nursing practices were discussed by nurses.

DATA EXTRACTION

We used Whittemore and Knafl's methodology to guide this integrative review (2005). We completed data extraction using an analytic review template organized to compare results to Kim's (2015) theoretical framework for nursing practice.

DATA SYNTHESIS

We used qualitative techniques described by Miles, Huberman, and Saldaña (2014) to code and thematically interpret the data. Nurses described their contributions to the establishment of fetal therapy programs through the development of entirely new technical and caring skills and their work in relation to care quality, clinician education, ethics, research, and health policy. Data were synthesized under three philosophies of nursing practice: therapy, care, and professional work.

CONCLUSION

Nurses have made important contributions to the evolving practice of fetal therapy, a nuanced practice that is critical to the development and provision of comprehensive patient- and family-centered care. Clinical implications of this review include practical recommendations for enhanced support of nursing practice in fetal therapy, which includes the provision of reliable forums to learn and share feedback about nursing practice in this field. Future work should focus on increasing understanding and visibility of nursing in fetal therapy through interdisciplinary evidence-based practice development.

Giant chorioangioma treated in utero via laser of feeding vessels with subsequent development of multifocal infantile hemangiomas

We report a case of a giant placental chorioangioma (15.6 cm diameter) complicated by polyhydramnios and severe fetal heart failure. Fetoscopic laser occlusion of a dominant feeding vessel was performed at 29 weeks' gestation and partial devascularization was achieved. In the 33rd week of the pregnancy, the decision was made to preemptively deliver the fetus due to persistent signs of fetal cardiac failure. After birth, the infant developed multifocal infantile hemangiomas with extracutaneous involvement. We posit that the development of infantile hemangiomas may be linked to the presence of the large chorioangioma. Further study is required to ascertain if fetal treatment of the chorioangioma may have been an exacerbating factor.