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Simple Summary: Breast cancer (BCa) is a pathology that affects the world population. Patients present risk factors for osteopenia and osteoporosis, such as chronic stress, estrogen deprivation due to hormonal treatment, a menopausal status, and decreased physical activity. An available alternative is the use of nonselective beta blockers (nsBBs) that have antitumoral properties, and in other diseases, antiresorptive and osteoforming effects. We demonstrated that BCa patients taking nsBBs had a greater bone mineral density and a lower incidence of osteoporosis and osteopenia than untreated patients. Although our study has several limitations, such as its retrospective design and single-center population, it revealed promising effects of nsBBs on the prevention and treatment of osteoporosis and osteopenia in patients with BCa. Breast cancer (BCa) is related to chronic stress and can reduce the bone mineral density (BMD) through neurochemicals related to beta-adrenergic receptor (ADRB) 1 and 2. Selective beta blockers (sBBs) and nonselective beta blockers (nsBBs) are used to treat systemic arterial hypertension (SAH) and may have osteoprotective effects, as they inhibit ADRBs. To evaluate the effects of sBBs and nsBBs on the BMD of Mexican patients with BCa. A retrospective study was conducted. We included 191 Mexican women with BCa without SAH and with SAH treated with nsBBs, sBBs, and diuretics. BMD was evaluated using a bone density scan (DEX scan). A greater average BMD (p < 0.05) was observed in patients with prior treatment with both nsBBs and sBBs (0.54 ± 0.94 and −0.44 ± 1.22, respectively) compared to patients treated with diuretics or without SAH (−1.73 ± 0.83 and −1.22 ± 0.98, respectively). Regarding the diagnosis of osteoporosis/osteopenia, no cases were observed in patients treated with nsBBs, whereas 5.6% of the patients treated with sBBs presented osteopenia. A total of 23.1% and 10.6% patients managed with diuretics or without treatment presented with osteoporosis and 61.5% and 48% patients managed with loop diuretics and without treatment presented with osteopenia, respectively (p < 0.05). Treatment with nsBBs is a promising option for the prevention and management of osteoporosis/osteopenia in Mexican patients with BCa; however, further prospective studies are needed. [ABSTRACT FROM AUTHOR]

In this study the effect of ozone and peroxone on the structure of Hymenolepis nana eggs at different pH (5, 7 and 10) was evaluated. Experiments were conducted with an ozone dose of 1.1 mg/min for 60 min; peroxone tests were done with the same conditions of ozonation process plus 0.33 mL of 33% hydrogen peroxide. Studies with scanning and transmission electron microscopy did not show ultrastructural changes after the treatment with ozone and peroxone at pH 5 and 7, but at pH 10 the eggs lost their external layer, making them more vulnerable. [ABSTRACT FROM PUBLISHER]