Impact of Omicron Variant Infection on Female Fertility and Laboratory Outcomes: A Self-Controlled Study.

Problem: Investigating the impact of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection on female fertility and laboratory outcomes in patients undergoing assisted reproductive technology (ART) treatment who were initially uninfected but later became infected.

Methods Of The Study: This self-controlled study included 197 patients who underwent repeated oocyte retrieval before and after SARS-CoV-2 infection between March 2021 and April 2023, of which 117 used the same ovarian stimulation protocol within a consistent age range. We evaluated the ovarian reserve, ovarian response, and laboratory outcomes in patients before and after SARS-CoV-2 infection.

The association of early pregnancy dyslipidemia with preterm birth in twin pregnancies: a retrospective cohort study.

Background: Maternal lipid metabolism has been implicated in elevating the risk of adverse pregnancy outcomes, which is a particularly significant concern in twin pregnancies. However, the precise relationship between early pregnancy dyslipidemia and the risk of preterm birth (PTB) in twin pregnancies remains unclear.

Methods: This retrospective cohort study included women with twin pregnancies between January 2018 and December 2023.

The association of post-embryo transfer SARS-CoV-2 infection with early pregnancy outcomes in in vitro fertilization: a prospective cohort study.

Background: The influence of SARS-CoV-2 infection after embryo transfer on early pregnancy outcomes in in vitro fertilization or intracytoplasmic sperm injection-embryo transfer treatment remains inadequately understood. This knowledge gap endures despite an abundance of studies investigating the repercussions of preceding SARS-CoV-2 infection on early pregnancy outcomes in spontaneous pregnancies.

Objective: This study aimed to investigate the association between SARS-CoV-2 infection within 10 weeks after embryo transfer and early pregnancy outcomes in patients undergoing in vitro fertilization/intracytoplasmic sperm injection treatment.

Magnetic semiconducting borophenes and their derivatives.

Two semiconducting borophenes with layer-dependent magnetism are predicted based on spin-polarized density functional theory. Both monolayer borophenes are ferromagnetic. One is composed of B and B triangular motifs, exhibiting bipolar spin polarization and a magnetic moment of 1.

[Effect and mechanism of Xihuang Pills on rats with precancerous lesions of breast].

The purpose of this study was to explore the effect and mechanism of Xihuang Pills on rats with precancerous lesions of the breast. Of 48 healthy female rats, 8 were randomly selected as blank group, and the other 40 were treated with 7,12-dimethylbenzanthracene(DMBA) combined with estrogen and progestin to establish a model of precancerous lesions of the breast. The successfully modeled rats were randomly divided into a model group, a tamoxifen group(1.

[Comparison of in vivo plasma pharmacokinetics and urine excretion of main components in Xihuang Formula in rats with precancerous lesions of breast cancer].

The UPLC-MS/MS was established for the determination of acetyl-11-keto-beta-boswellic acid(AKBA) and β-boswellic acid(β-BA), the main active components of Olibanum and Myrrha extracts in Xihuang Formula, in rat plasma and urine. The effects of compatibility on the pharmacokinetic behaviors of AKBA and β-BA in rats were investigated, and the differences in pharmacokinetic behaviors between healthy rats and rats with precancerous lesions of breast cancer were compared. The results showed that compared with RM-NH and RM-SH groups, the AUC_(0-t) and AUC_(0-∞) of β-BA increased(P<0.

[Study on effect of SuperTab 40LL on compression characteristics of musk sustained-release mini-tablets based on mathematical models].

In this paper, co-processed lactose SuperTab 40 LL was selected as fillers to study the preparation of musk sustained-release mini-tablets in the Xihuang multiple-unit drug release system. Musk sustained-release tablets containing different proportions of SuperTab 40 LL and MCC were prepared under various pressures, and then the compressibility and compactibility of these prescriptions were evaluated by Walker, Heckel and Ryshkewitch-Duckworth equations. In addition, the fluidity of the prescriptions was evaluated by parameters of Kawakita equation.

The investigation of excited state proton transfer mechanism in water-bridged 7-azaindole.

Based on the time-dependent density functional theory (TDDFT), the excited-state intermolecular proton transfer (ESIPT) mechanism of water-bridged 7-azaindole has been investigated theoretically. The calculations of primary bond lengths and the IR vibrational spectra between the S0 state and the S1 state that verified the intramolecular hydrogen bond were strengthened. The fact that reproduced experimental absorbance and fluorescence emission spectra well theoretically demonstrate that the TDDFT theory we adopted is reasonable and effective.