Immunogenicity of Two Doses of BNT162b2 mRNA COVID-19 Vaccine with a ChAdOx1-S Booster Dose among Navy Personnel in Mexico.

Booster doses of the SARS-CoV-2 vaccine have been recommended to improve and prolong immunity, address waning immunity over time, and contribute to the control of the COVID-19 pandemic. A heterologous booster vaccine strategy may offer advantages over a homologous approach. To compare the immunogenicity of two doses of BNT162b2 mRNA COVID-19 vaccine with a ChAdOx1-S booster dose, immunoglobulin G (IgG) anti-spike (anti-S) and anti-nucleocapsid (anti-N) antibody titers (Ab) were compared over 1 year and post-booster vaccination.

Convalescent Plasma to Treat COVID-19: A Two-Center, Randomized, Double-Blind Clinical Trial.

Background: The use of convalescent plasma (CP) has been considered for its immunological mechanisms that could benefit patients in moderate and severe stages of COVID-19. This study evaluated the safety and efficacy of the use of donor CP for COVID-19. Material and methods: A double-blind, randomized controlled clinical trial was conducted from May to October 2020.

Synthesis and stimulated luminescence property of Zn(BO):Tb.

Zinc borate, Zn(BO), doped with different concentrations of terbium (0.5-8mol%) was synthesized and polycrystalline samples were characterized by Scanning Electron Microscopy and X-Ray Diffraction. The Zn(BO) was formed in the pure samples sintered at 750 and 800°C which has the body centered cubic structure, and a ZnBO primitive orthorhombic phase was present.

The effect of Nd and Mg doping on the micro-Raman spectra of LiNbO(3) single-crystals.

The LiNbO(3) congruent crystals doped with small Nd concentrations, <1 mol% Nd, and co-doped with Mg ions, 0-9 mol% Mg, were systematically investigated by means of micro-Raman spectroscopy in the Y and Z crystal directions. Results obtained from an undoped congruent crystal, an Nd-doped crystal, a Mg-doped crystal and Nd, Mg-co-doped crystals are compared. From the analyses of the results obtained in the Y direction, the Nd and Mg content dependence of the two lowest-Raman A(1)(TO(1)) and A(1)(TO(2)) modes, the half-width composition and the area ratio of the A(1)(TO(4)) and E(TO(8)) bands, we reached several conclusions about the incorporation mechanism of the Nd and Mg ions into the LiNbO(3) lattice.

Application of principal component analysis and Raman spectroscopy in the analysis of polycrystalline BaTiO3 at high pressure.

The principal component analysis (PCA) was applied to Raman spectra of polycrystalline BaTiO(3) under pressure from atmospheric pressure to approximately 6.72 GPa. For the system utilized, PCA was able to distinguish spectral features and to determine the phase transition pressure: tetragonal to cubic at approximately 2.

Thermoluminescence behaviour of KCL(1-x)Br(x):Pb2+ exposed to gamma radiation.

The thermoluminescence (TL) behaviour of solid solutions of lead doped KCl(1-x)Br(x) (X = 0.02, 0.35, 0.

Prolactin secretion in molar and normal pregnancy.

Objective: To describe the relation between PRL and hCG, T3, T4, fT4, TSH, E2 and P4 levels in normal pregnancies and those complicated with GTD.

Method: Twenty women, 10 with normal pregnancy and 10 with molar pregnancy were studied. The differences between them and the relation between prolactin (PRL) and human chorionic gonadotropin (hCG), estradiol and thyroid hormones, thyroid stimulating hormone (TSH) and progesterone, was determined by Mann-Whitney U-test and Pearson's correlation coefficient, respectively.

Bacterial infection and semen characteristics in infertile men.

Semen samples of 190 men attending an andrology clinic were evaluated with bacteriological culture and categorized as negative (group I) and positive (group II); the effect of bacteriospemia on semen characteristics was also analyzed. Semen samples from both groups were simultaneously analyzed for routine parameters such as volume, sperm count, motility, viability and morphology. The semen culture was negative in 34% and positive in 66% of the samples.

[Evaluation of the cervical factor in ovulation induction].

Post coital sperm penetration tests performed in 66 women under study for infertility, the purpose was to evaluate the ovulation induction effect over mucus quality and over sperm penetration. They were divided in three groups: 1) 28 women with evidence of spontaneous ovulation (control group), 2) 26 patients in which ovulation was induced with comiphene citrate and 3) 12 patients in which ovulation was induced with menotropins. The results showed that CC had an adverse effect over cervical mucus (p < 0.

Sexually transmitted diseases and related genital pathologies in oligozoospermia.

Sexually transmitted pathogens are associated with a wide range of anomalies and diseases, including recurrent genital herpes, urethritis, syphilis, prostitis, genital ulcers, perihepatitis, unexplained infertility, infant prematurity, low birth weight, and neonatal death or malformations. Prompt diagnosis of sexually transmitted diseases (STDs) is essential to ensure appropriate specific treatment and to reduce complications. Extensive studies on the etiology of male infertility include poorly treated infections such as STDs, epididymitis, complications associated with mumps, delayed treatment of undescended testes, repair of inguinal hernia, varicocele, endocrine disorders, anomalies of the reproductive tract and male accessory organs, trauma, surgery, heat-cold injury, and active-passive immunization.

Testicular function in active ankylosing spondylitis. Therapeutic response to human chorionic gonadotrophin.

Testicular function was studied in 22 patients with ankylosing spondylitis (AS) with serum measurements of hormone levels, seminal fluid analysis and testicular reserve test. Results were correlated with disease activity. The abnormal findings were elevated luteinizing hormone (LH), inversion of estradiol/testosterone ratio (E2:T) and diminished testicular reserve for testosterone (T) and slightly increased for estradiol (E2).

Ovarian function studies in active ankylosing spondylitis in women. Clinical response to estrogen therapy.

Ovarian function was studied in 17 women with active ankylosing spondylitis (AS). Levels of FSH, LH, prolactin and androstenedione were normal in menstruating patients and FSH and LH were elevated in menopausal patients. In menstruating patients with active AS the estradiol levels were lower than in patients with inactive AS and significantly (p less than 0.

[The use of clomiphene and menotropins as inducers of multiple follicular growth in a program of in vitro fertilization].

In our IVF & related techniques program, clomiphene 50 mg was used from days 2 to 6 of the cycle in 20 patients and 20 cycles. (17 IVF patients and 3 GIFT patients) menotropins were also used in 2 different schemes: a) 2 ampules in alternated days (12 cases) and b) one ampule daily (8 cases). The patients with the daily scheme required lesser total dose of menotropins and developed higher estradiol levels, although this had none statistic significance, and they also developed a greater number of follicles.

[Clomiphene as an inducer of multiple follicular growth].

In our IVF + ET & GIFT programs we gave 100 mg of clomiphene from cycle days 2 to 6 in 35 cycles of 32 infertile patients. Serum estradiol curves were made establishing 3 types of curves: 1. climbing curve which was subdivided in curve A (6 cycles) with more than 600 pg/mL of estradiol, more than 4 follicles of a mean size of 35 mm; curve B (13 cycles) with an estradiol range from 300 to 600 pg/mL, 2.