Re: Never ending Kidney Stones
This Vinpocetine which is an over the counter supplement may
help. Show this to you doctor. It is an old animal study that
indicate that Vinpocetine will remove excess Calcium from soft
tissues. Because Calcium is such an essential element I know
that a lot of precaution must be taken.
Jack N Dalton
1: No To Shinkei 1990 Apr;42(4):325-31 [Contents of calcium,
phosphorus and aluminum in central nervous system, liver
and kidney of rabbits with experimental
atherosclerosis-scavenger effects of vinpocetine on the
deposition of elements] [Article in Japanese]
Yasui M, Yano I, Ota K, Oshima A. Department of Laboratory
Medicine, Wakayama Medical College, Japan.
The aims in this study were designed to clarify the contents
of calcium
(Ca), phosphorus (P) and aluminum (Al) in central nervous
system (CNS), liver and kidney of rabbits with
atherosclerosis experimentally induced by cholesterol-rich
diet, and investigate scavenger effect of
14-ethoxycarbonyl-(3 alpha, 16
alpha-ethyl)-14,15-eburnamenine (vinpocetine) on the
deposition of these elements in CNS and soft tissues of
experimental atherosclerosis. Sixteen male rabbits were
divided into 4 groups. Each group was fed with standard
diet (Group A), standard diet containing 1.5% cholesterol
(Group B), standard diet containing 1.5% cholesterol plus
oral administration of 3 mg/kg/day vinpocetine (Group C),
and standard diet containing 1.5% cholesterol plus
administration of 10 mg/kg/day vinpocetine (Group D).
After 3 months' feeding, experimental atherosclerosis was
produced with a modified method of Kritchevsky et al in
rabbits of Groups B, C and D. Blood was collected by
cardiocentesis under the anesthesia of ether and then
rabbits sacrificed to remove CNS and other tissues. The
blood was stood for 1 hour at room temperature and
separated by centrifugation at 3000 rpm for 10 min to
determine serum total cholesterol, phospholipids,
HDL-cholesterol, peroxide lipid, NEFA and calcium levels.
Ca, P and Al contents in the frontal lobe, pons,
cerebellum, spinal cord, liver and kidney were determined
by neutron activation analysis. Ca contents of CNS, liver
and kidney in Group B significantly increased than those
of Group A (p less than 0.01), and significantly decreased
in Groups C and D compared with those of Group B (p less
than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)
PMID: 2390364 [PubMed - indexed for MEDLINE]
1: World J Urol 2001 Nov;19(5):344-50
Phosphodiesterase 1 inhibition in the treatment of lower
urinary tract dysfunction: from bench to bedside.
Truss MC, Stief CG, Uckert S, Becker AJ, Wefer J, Schultheiss
D, Jonas U.
Urologische Klinik, Medizinische Hochschule, Hannover,
Germany.
Anticholinergic drugs are currently the therapy of choice to
treat urgency and urge incontinence. However, muscarinergic
receptor blockers with adequate selectivity for detrusor
smooth muscle are not available. Also, in contrast to the
normal detrusor, the unstable detrusor neurotransmission seems
to be at least partially regulated by non-cholinergic (NANC)
pathways. These factors may explain the common side effects
and the limited clinical efficacy of these compounds. Specific
modulation of intracellular second messenger pathways offers
the possibility of organ selective manipulation of tissue
function, specifically contraction and relaxation of smooth
musculature. Because of their central role in the
intracellular regulation of smooth muscle tone
phosphodiesterases (PDEs) are an attractive pharmacological
targets. The PDE 5 specific inhibitor sildenafil (Viagra) has
revolutionized the treatment of patients with erectile
dysfunction. Numerous other PDE inhibitors are currently under
investigation for the treatment of various disorders. We
investigated the role of PDEs in human detrusor smooth muscle.
Our data demonstrate the presence of five PDE isoenzymes in
human detrusor and suggest, for the first time, that the cAMP
pathway and the calcium/calmodulin-stimulated PDE (PDE 1) are
of functional importance in the intracellular regulation in
this tissue in vitro. In addition. initial clinical data with
the PDE 1 inhibitor vinpocetine in patients not responding to
standard anticholinergic therapy indicate a possible role for
vinpocetine in the treatment of urgency, urge incontinence
and, possibly, low compliance bladder and interstitial
cystitis. The results of a larger randomized, double-blind,
placebo-controlled, multicenter trial with vinpocetine show a
tendency in favor of vinpocetine over placebo; however,
statistically significant results were documented for one
parameter only. This might be due to the rather low dosage
chosen and the small sample size. Further studies are
necessary and currently underway to delineate the optimal
dosage, indications and patient population. Modulation of
intracellular key enzymes effecting second messenger
metabolism,
i.e. isoenzyme-selective PDE inhibition is a novel approach
which possibly avoids the limitations of anticholinergic
therapy in patients with lower urinary tract dysfunction.
PMID: 11760783 [PubMed - in process]
1: Urol Res 2001 Dec;29(6):388-92
Identification and functional study of phosphodiesterases in
rat urinary bladder. Qiu Y, Kraft P, Craig EC, Liu X,
Haynes-Johnson D.
i.f. Johnson Pharmaceutical Research Institute, Raritan, NJ
08869, USA.
Abstract Cyclic nucleotides are important secondary
messengers involved in modulating the contractility of
various smooth muscles. Phosphodiesterases (PDE) play
important roles in this process by modulating the levels
of cyclic nucleotides and their duration of action. This
study was designed to identify and characterize the PDE
isoenzymes in rat urinary bladder and to evaluate their
roles in regulating bladder smooth muscle tone. The
involvement of cAMP and cGMP pathways in this process
was also assessed. The studies were carried out with
tissues from male and female rats and no significant
sex-related difference was found in the results.
Utilizing the unique pharmacological properties of
different isoenzymes, PDE1, 2, 3, 4, and 5 were
identified in rat bladder. Organ bath experiments showed
that forskolin was most potent in relaxing
pre-contracted rat bladder strips while sodium
nitroprusside was moderately effective, suggesting the
relaxation was mainly mediated by the cAMP pathway and
that the cGMP pathway is moderately involved. For PDE
inhibitors, the non-specific inhibitor papaverine was
most effective in relaxing pre-contracted bladder
strips. Among isoenzyme-selective inhibitors,
vinpocetine, EHNA, and sildenafil induced more
relaxation than milrinone and rolipram.
PMID: 11828991 [PubMed - indexed for MEDLINE]
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