[Stem and leaf photosynthesis of seven desert woody species and its influencing factors].

Stem photosynthesis widely presents in desert plants, which increases carbon uptake capacity. In this study, we measured the photosynthetic characteristics of leaves and stems in seven desert woody plants (, var. , , , , , ) in the same habitat, using a portable Li-6400XT photosynthesis system combined with P-Chamber.

3- to 24-month Follow-up on COVID-19 with Pulmonary Tuberculosis Survivors after Discharge: Results from a Prospective, Multicenter Study.

Objective: Coronavirus disease 2019 (COVID-19) and tuberculosis (TB) are major public health and social issues worldwide. The long-term follow-up of COVID-19 with pulmonary TB (PTB) survivors after discharge is unclear. This study aimed to comprehensively describe clinical outcomes, including sequela and recurrence at 3, 12, and 24 months after discharge, among COVID-19 with PTB survivors.

Association of Overlapped and Un-overlapped Comorbidities with COVID-19 Severity and Treatment Outcomes: A Retrospective Cohort Study from Nine Provinces in China.

Objective: Several COVID-19 patients have overlapping comorbidities. The independent role of each component contributing to the risk of COVID-19 is unknown, and how some non-cardiometabolic comorbidities affect the risk of COVID-19 remains unclear.

Methods: A retrospective follow-up design was adopted.

Clinical characteristics and treatment outcome of COVID-19 patients with stroke in China: A multicenter retrospective study.

Objective: Previous studies mainly reported the clinical characteristics of novel coronavirus 2019 (COVID-19) infections, but the research on clinical characteristics and treatment outcomes of COVID-19 patients with stroke is still rare.

Methods: A multi-center retrospective study was conducted at 11 hospitals in 4 provinces of China, and COVID-19 patients with stroke were enrolled from February 24 to May 4, 2020. We analyzed epidemiological, demographic, and clinical characteristics of cases as well as the laboratory test results, treatment regimens and outcomes, and the clinical characteristics and therapeutic outcomes were compared between severe and nonsevere patients, and by age group, respectively.

Decreased endometrial vascularity and receptivity in unexplained recurrent miscarriage patients during midluteal and early pregnancy phases.

Objective: To evaluate the predictive value of three-dimensional (3D)-power Doppler sonography on recurrent miscarriage.

Materials And Methods: The study patients were divided into a recurrent miscarriage group (30 cases) and a normal pregnancy group (21 cases). Measurement of endometrial thickness was performed using two-dimensional transvaginal ultrasound in the midluteal phase.

Risk of chromosomal abnormalities in early spontaneous abortion after assisted reproductive technology: a meta-analysis.

Background: Studies on the risk of chromosomal abnormalities in early spontaneous abortion after assisted reproductive technology (ART) are relatively controversial and insufficient. Thus, to obtain a more precise evaluation of the risk of embryonic chromosomal abnormalities in first-trimester miscarriage after ART, we performed a meta-analysis of all available case-control studies relating to the cytogenetic analysis of chromosomal abnormalities in first-trimester miscarriage after ART.

Methods: Literature search in the electronic databases MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials (CENTRAL) based on the established strategy.

[Prenatal gene diagnosis of paternally inherited alpha-thalassemia by detecting fetal DNA in maternal plasma].

Objective: To evaluate the value of diagnosis of alpha-thalassemia by analyzing fetal DNA in maternal plasma.

Methods: Ten families were screened, the husbands being alpha-thalassemia Southeast Asia deletion (SEA alpha-thalassemia-1) heterozygotes and the pregnant women being alpha-thalassemia-2 heterozygotes. Fluorescent polymerase chain reaction (PCR) and gene scanning were used to detect the paternally inherited genotypes of SEA alpha-thalassemia-1 gene mutation and short tandem repeats (STRs) in the maternal plasma fetal DNA.

[Prenatal diagnosis of Thailand deletion of alpha-thalassemia 1].

Objective: To conduct prenatal diagnosis on the couples carrying Thailand deletion (--THAI) alpha-thalassemia 1 and at high risk of having fetus with alpha-thalassemia.

Methods: Genotypes of couples and fetuses were analyzed by PCR and DNA sequencing.

Results: Four pregnant women were patients with Hb H diseases of --THAI compounding with alpha-thalassemia 2, while their husbands were heterozygote of the Southeast Asian type alpha-thalassemia 1 (--SEA).