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Four supramolecular compounds, [(ZnCl4)(BPX)] 1, [(CdCl4)(BPX)] 2, [(HgCl4)(BPX)] 3 and [Cu4(SCN)6(BPX)]n4 (BPX = 1, 4-bis(pyridinium)xylol), were synthesized and characterized by IR spectrum and X-ray crystallography. The crystal structures of 1-3 show that they all crystallize in monoclinic systems with mononuclear tetrachlorometallate structure. Compound 4 crystallizes in triclinic system, space group P-1 in which four SCN-ions serve as bridging ligands to link four Cu(I) ions, giving rise to a 16-numbered ring. Many 16-membered rings are bridged by SCN-to form a one-dimensional chain structure. Furthermore, Cu-Cu bonds bridge two chain structures to form a one-dimensional complex chain structure. [ABSTRACT FROM AUTHOR]

We get two novel polymers [(Cu6I10)(BPB)2]n(1) and [(Ag6I10)(BPB)2]n(2) by the reaction of metal iodides with BPB(BPB=1,4-bis(pyridinium) butane dication), which are characterized by X-ray crystallography and IR spectroscopy. The title mononuclear compound 1 crystallizes in monoclinic, space group P 2(1)/c with a = 9.7050(17)Å, b = 15.426(3)Å, c = 15.992(3) Å, α =90°, β = 105.653(4), γ = 90°. In 1 there exist two styles of CuI centers that share the edge to form a 1D cluster-based chain. Compound 2 crystallizes in Orthorhombic, space group Fddd with a = 13.8931(10) Å, b = 22.2368(16) Å, c = 31.330(3) Å. In the anion, each monovalent Ag atom is tetrahedrally coordinated by three μ2-I and one t-I atoms ligands to constitute an infinite 1D chain with the organic dication BPB trapped in it. In both compounds, the cations ([C14H18N2]2+) and anion chain are combined by static attracting forces in the crystal. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title salt, C(11)H(12)N(2) (2+)·2Cl(-)·H(2)O, the dication adopts a butterfly shape [dihedral angle between rings = 69.0 (1)°] with the water mol-ecule lying in the V-shaped cavity. Each O-H bond of the water molecule lies parallel to an aromatic ring and forms an O-H⋯Cl inter-action to a chloride anion. The methyl-ene C atom in the dication and the water O atoms lie on special positions of twofold site symmetry.

Objective: To evaluate the feasibility and accuracy of measurement of myocardial perfusion defects with intravenous contrast-enhanced real-time three-dimensional echocardiography (CE-RT3DE)., Methods: RT3DE was performed in 21 open-chest mongrel dogs undergoing acute ligation of the left anterior descending artery (LAD, n = 14) or distal branch of the left circumflex artery (LCX, n = 7). A perfluorocarbon microbubble contrast agent was injected intravenously to assess the resulting myocardial perfusion defects with Philips Sonos-7500 ultrasound system. Evans blue dye was injected into the occluded coronary artery for subsequent anatomic identification of underperfused myocardium. In vitro anatomic measurement of myocardial mass after removal of the animal's heart was regarded as the control. Blinded off-line calculation of left ventricular mass and perfusion defect mass from RT3DE images were performed using an interactive aided-manual tracing technique., Results: Total left ventricular (LV) myocardial mass ranged from 38.9 to 78.5 (mean +/- SD: 60.0 +/- 10.1) g. The mass of perfusion defect ranged from 0 to 21.4 (mean +/- SD: 12.0 +/- 5.0) g or 0 to 27% of total LV mass (mean +/- SD: 19% +/- 6%). The RT3DE estimation of total LV mass (mean +/- SD: 59.8 +/- 9.9 g) strongly correlated with the anatomic measurement (r = 0.98; y = 2.01 + 0.96x). The CE-RT3DE calculation of the mass of underperfused myocardium (mean +/- SD: 12. 3 +/- 5.3 g) also strongly correlated with the anatomic measurement (r = 0. 96; y = - 0.10 + 1.04x) and when expressed as percentage of total LV mass (r = 0.95; y = -0.20 + 1.04x)., Conclusions: RT3DE with myocardial contrast opacification could accurately estimate underperfused myocardial mass in dogs of acute coronary occlusion and would play an important role in quantitative assessment of myocardial perfusion defects in patients with coronary artery disease.

Objective: To study the two-year follow-up and contrast research for 182 patients by Thermablate EAS Uterine Balloon Therapy (UBT) or Transcervical Resection of Endometrium (TCRE)., Methods: We followed up 90 cases of UBT and 92 cases of TCRE between Oct. 2003 and June 2005. The mean age of UBT group was 49.4+/-9.4 (34-81) years, and that of TCRE group 46.6 +/-8.4 (35-74) years. The mean following-up for UBT group was 17.3+/- 5.0 (6-27) months, and that of TCRE group 17.5+/-4.1 (6-27) months. There was no noticeable difference of the high risk for complication between the two groups. The follow up happens twice a year one month after the operation. The follow up started in Dec. 2005., Results: The chi(2) value of pain during operation between two groups is 12.744. The P value is 0.000. It has statistical significance. The pain of UBT group is heavier than TCRE. The chi(2) value of blood disappearance between two groups is 24.347. The P value is 0.000. It has statistical significance. The duration of the blood disappearance of UBT group is shorter than TCRE. The chi(2) value of discharge disappearance between two groups is 99.486. The P value is 0.000. It has statistical significance. The duration of the blood discharge of UBT group is shorter than TCRE. The chi(2) value of blood flow for two years after surgery between two groups is 4.708. The P value is 0.03. It has statistical significance. The blood flow of UBT group is much more decrease than TCRE. The chi(2) value of dysmenorrheal improved after surgery between two groups is 9.970. The P value is 0.002. It has statistical significance. The dysmenorrheal improved of UBT group is much better than TCRE., Conclusion: Thermablate EAS UBT is a new generation of endometrial ablation. Two years clinical observation shows that pain can be controlled by oral medicine for UBT group. The blood and discharge disappearance of UBT group is shorter than TCRE. Two years after the surgery the improvement of blood flow and dysmenorrheal released is much better than TCRE. However it probably will take longer time to show its long term effectiveness.

Objective: To investigate the methods of different types of hysteroscopic surgery for endometrial polyps., Methods: A total of 109 cases by different ways by hysteroscopic surgery for endometrial polyp from October 2000 to May 2002 were followed up. The mean age was 45 +/- 9 (26 - 73) years. The mean follow-up was 12 +/- 5 (3 - 22) months. The patients of menstrual disorder were asked for filling in pictorial blood loss assessment chart (PBAC) before and after the surgery., Results: By the PBAC there was significant difference between before and after the surgery (P = 0.001). After the surgery, among 84 polyps with menstrual disorder, 14 cases (16.7%) were amenorrhea, 26 cases (31.0%) spotting, other 24 cases reducing the amount. Thirty-four cases that had had anemia recovered in one month after the surgery. In 16 cases dysmenorrhea, 7 cases were recovered, 7 got better, and the other 2 got worse. Of 5 cases of infertility (3 were primary and 2 were secondary), 4 cases got pregnancy after the surgery., Conclusions: The polyp patient who had menstrual disorder without desire of fertility should undergo polypectomy with endometrial resection in order to avoid recurrence. The patient who has desire of fertility should undergo polypectomy merely. If she had polyp with polypoid hyperplasia she should undergo polypectomy with endometrial resection of superficial layer. The postmenopausal patient should perform polypectomy merely or polypectomy with endometrial ablation.