Frusemide plus doxazosin therapy for nocturia in patients with BPH/LUTS / 中华男科学杂志

<p><b>OBJECTIVE</b>To determine the efficacy and safety of a diuretic agent, frusemide, combined with doxazosin in the treatment of nocturia in patients with benign prostate hyperplasia / lower urinary tract symptoms (BPH/LUTS).</p><p><b>METHODS</b>Sixty-four BPH/LUTS patients with nocturia were equally randomized into two groups, one treated with doxazosin (4 mg/d), and the other with frusemide (40 mg/d) and doxazosin (4 mg/d), given 6 h before sleep, both for 4 weeks. Urine volume, IPSS, QOL, serum electrolytes, plasma osmolality were recorded and compared between the two groups before and after the treatment.</p><p><b>RESULTS</b>Compared with the doxazosin group, the frusemide plus doxazosin group showed significantly reduced nocturia frequency (P < 0.01), increased daytime urine output (P < 0.01), decreased nocturia urine output (P < 0.01), unchanged total urine output (P > 0.05), improved IPSS and QOL (P < 0.05, P < 0.01), but with no remarkable differences in the levels of serum sodium, potassium, chlorine, and osmotic pressure (P > 0.05).</p><p><b>CONCLUSION</b>Four-week treatment with frusemide plus doxazosin was safe and effective for nocturia in patients with BPH/LUTS.</p>

Postsynaptic calcium pathway contributes to synaptic plasticity between retinal cones and luminosity-type horizontal cells / 生理学报

It was previously found that the efficacy of synaptic transmission between retinal cone systems and luminosity-type horizontal cells (LHCs) was activity-dependent. Repetitive activation of red-cone pathway increased the LHCos hyperpolarizing response to red light, and the response enhancement was reversible. In this study, intracellular recording and pharmacological method were applied to investigate the mechanism(s) underlying red-flickering-induced response enhancement. Lowering intracellular Ca(2+) in the LHC by intracellular injection of Ca(2+) chelator EGTA prevented the development of red-flickering-induced response enhancement, which implicates the importance of postsynaptic calcium signal. The response enhancement could also be eliminated by a potent antagonist of Ca(2+)-permeable AMPA receptor (CP-AMPAR), which suggests the possibility that Ca(2+) influx via glutamate-gated calcium channels is related to the changes of [Ca(2+)](i). Furthermore, the administration of ryanodine or caffeine also attenuated the phenomenon, which gives evidence that the local calcium signal caused by intracellular calcium-induced calcium release (CICR) may be involved. Taken together, our data implicate that postsynaptic CICR and CP-AMPAR are related to the activity-dependent response enhancement.

Analysis of electric sacral neuromdulation and resiniferatoxin in treatment of primary female overactive bladder / 中国基层医药

Objective To analyze the efficacy of electric sacral neuromdulation and resiniferatoxin in patients with female overactive bladder.Methods 32 cases with IOAB female patients accepted percutaneous test sitmulation of the electric sacral nerves at S3 ,and treated by intravesical instillation with 100ml of 100nmol/L RTX.The effica- cy of voiding status were evaluated.The improvement of female patients life were evaluated comparing the rating of depression and anxiety.Results There were significant improvements in 32 cases in variables included the number of voiding,volume voided and signs every day and urgent uresis.In the rating of depression and anxiety,the patients improved a litter and still had stimulating symptom in urethra and bladder.Conclusion The treatment of IOAB with single administratoon of electric sacral neuromdulation and resiniferatoxin is effective,and can successfully im- prove the symptom with little side effects.