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1.
《The Knee》2022
BackgroundIn recent years, transcatheter arterial embolization (TAE) using imipenem/cilastatin (IPM/CS) has attracted attention as a treatment for relieving osteoarthritis (OA) pain. However, IPM/CS is not approved by Japanese medical insurance for use as an embolic material. Therefore, it is necessary to develop new embolic materials for TAE to relieve OA pain. The purpose of this study was to develop a swine model of knee arthritis and embolize abnormal neovessels (ANs) using two different embolic materials. We compared the embolic effects and tissue damage in knees.MethodsKnee arthritis was induced by intra-articular injection of papain into 12 knees in six female swine. The swine were divided into two groups of three swine each (six knees per group) for embolization of ANs in the knees with either IPM/CS or soluble gelatin sponge particles (SGSs). Three days after embolization, we compared the embolic effects using angiography and the tissue damage histopathologically.ResultsANs were observed in all 12 knees at 42 days after papain injection. The ANs disappeared and the patent arteries were recanalized 3 days after TAE in all 12 knees. Histopathological evaluation revealed synovitis changes, such as synovial thickening and inflammatory cell infiltration, in all 12 knees. There was no evidence of skin or muscle necrosis in either group. The appearance of ANs, recanalization of the parent arteries, and histopathological outcomes were not significantly different between the two groups.ConclusionSGSs were as safe as IPM/CS for TAE of ANs in this swine model of knee arthritis. 相似文献
2.
Hybrid imaging for ischemic heart disease refers to the fusion of information from a single or usually from multiple cardiovascular imaging modalities enabling synergistic assessment of the presence, the extent, and the severity of coronary atherosclerotic disease along with the hemodynamic significance of lesions and/or with evaluation of the myocardial function. A combination of coronary computed tomography angiography with myocardial perfusion imaging, such as single-photon emission computed tomography and positron emission tomography, has been adopted in several centers and implemented in international coronary artery disease management guidelines. Interest has increased in novel hybrid methods including coronary computed tomography angiography-derived fractional flow reserve and computed tomography perfusion and these techniques hold promise for the imminent diagnostic and management approaches of patients with coronary artery disease. In this review, we discuss the currently available hybrid noninvasive imaging modalities used in clinical practice, research approaches, and exciting potential future technological developments. 相似文献
3.
Fatemeh Yari Noushin Ahmadzadeh Shima Azadpour Shahram Vaeli 《Indian journal of hematology & blood transfusion》2012,28(3):152-156
The demand for standard platelet concentrates (PCs) has continued to increase in the recent years. Infusible platelet membranes (IPM) prepared from new or outdated human platelets have been developed as an alternative to standard PCs, with the additional advantage of long shelf life and increased viral safety. Reduction of HLA antigens on the IPM has been assigned as one of the probable advantages of this product. In re-examining this issue, we studied the existence of HLA class I on the surface of IPM microparticles. In comparison we also surveyed HLA expression on the surface of the naturally occurred platelet-derived microparticles (nPMPs) during 7 days storage. Intended for producing IPM, PCs obtained from Iranian blood transfusion organization were lysed; virally inactivated with wet heat in the presence of a heat stabilizer and then sonicated. IPMs were separated using centrifugation and liquid-stored in 4°C. The expression of HLA class I antigens was surveyed using flow cytometry technique. HLA molecules were present on the microparticles. Shedding of HLA antigens was demonstrated from the surface of the both liquid-stored IPM and nPMPs during storage. Storage of IPM in 4°C was accompanied with significant reduction of HLA molecules. It seemed that achievement of HLA-free IPM could be impossible unless chloroquine treated platelets were used to prepare these microvesicles. 相似文献
4.
Daisuke Sakanashi Narimi Miyazaki Yuzuka Kawamoto Tomoko Ohno Atsuko Yamada Isao Koita Setsuo Miyajima Hiroyuki Suematsu Mao Hagihara Nobuhiro Asai Yusuke Koizumi Yuka Yamagishi Hiroshige Mikamo 《Journal of infection and chemotherapy》2019,25(1):75-77
We determined the optimal antimicrobial in the sodium mercaptoacetic acid double disk synergy test (SMA-DDST) for the detection of IMP-1-producing Pseudomonas aeruginosa isolates in Japan and evaluated the performance of the test.Fifty-four P. aeruginosa clinical isolates were tested, including 39 IMP-1 producers and 15 non-metallo-β-lactamase (MBL)-producing carbapenem- and ceftazidime (CAZ)-resistant isolates. The SMA-DDST was performed with CAZ, cefepime (CFPM), imipenem (IPM), meropenem (MEPM), doripenem (DRPM), or biapenem (BIPM)-containing disks. The sensitivity of the SMA-DDST with CAZ, CFPM, IPM, MEPM, DRPM, and BIPM was 39/39 (100%), 36/39 (92%), 18/39 (46%), 8/39 (21%), 19/39 (49%), and 36/39 (92%), respectively. The specificity was 15/15 (100%) for all SMA-DDSTs. This suggests that the isolates may have a resistance mechanism other than MBL production for IPM, MEPM, or DRPM. Since the CAZ resistance mechanism in P. aeruginosa is the same as that of CFPM, but differs from that of carbapenems, we conclude that combining CAZ with BIPM SMA-DDSTs can prevent any failure in the detection of IMP-1-producing P. aeruginosa. 相似文献
5.
6.
Mastsui Kaoru; Masuda Noriyuki; Takada Minoru; Kusunoki Yoko; Fukuoka Mashhiro 《Japanese journal of clinical oncology》1991,21(6):428-434
We conducted a randomized trial to compare the efficacy of imipenem/cilastatine(IPM/CS) monotherapy with thatof a combination of latamoxef(LMOX) and tobramycin (TOB) in the initial management of feverand neutropenia in patients with lung cancer. Leukocytopenicfebrile patients(<3,000 leukocytes perµl; temperature>38°C) with lung cancer given induction therapy wererandomly assigned to receive intravenous treatment with either1g IPM/CS twice daily or 2g LMOX plus 90 mg TOB twice daily.A total 101 febrile episodes were studied. Fifty-one episodeswere treated with IPM/CS and 50 with LMOX+TOB. Fifty-nine ofthe febrile episodes were bacteriologically confirmed, whilean organism could not be isolated despite the presence of obviousclinical infection in the remaining 42. The response rate was82% with IPM/CS and 80percent; with combination therapy. Thisdifference was not statistically significant. The response rateregarding gram-negative infections was 10 out of 14 (71%) inthe IPM/CS group and seven out of 12(58%) in the LMOX+TOB group.This differnce was also not significant (P=0.484). The responserate in severely neutropenic patients (neutrophils <100/µl)was low (P=0.078). Three patients in the IPM/CS group were withdrawnfrom the study due to skin rash and vomiting. Therapy with IPM/CSmonotherapy was as effective as a combination regimen 相似文献
7.
《Journal of infection and chemotherapy》2022,28(2):343-346
A prostate biopsy is essential for prostate cancer diagnosis. However, infections are one of the biopsy-associated complications, and post-biopsy fever is estimated to occur in approximately 1% of all cases. It may thus be beneficial to perform a rectal swab culture before a transrectal prostate biopsy to confirm the presence of resistant bacteria and select preventive antibacterial agents according to the drug susceptibility results. This study aimed to determine whether there is a difference between the drug susceptibility of bacteria detected in the stool of patients who were scheduled to undergo prostate biopsy and the hospital-wide urine antibiogram. Patients suspected of having prostate cancer who underwent transrectal prostate biopsy via transrectal ultrasonography between August 1, 2016, and June 30, 2020, were included in this study. Stool samples were collected and cultured before biopsy. Overall, 99 patients underwent prostate biopsy, and of these, culture results were available for 81 patients (81.8%). Escherichia coli was detected in 74.0% (60 samples) of the stool culture samples, of which 4 samples were extended-spectrum β-lactamase-producing types. We found greater susceptibility of Escherichia coli to ampicillin, fluoroquinolones, sulfamethoxazole/trimethoprim, and cefixime in the stool culture antibiogram than in the hospital-wide urine antibiogram. We also found a significantly low incidence of ESBL-positive Escherichia coli in the stool culture antibiogram with p-values of 0.009, 0.007, and 0.03 compared to the hospital-wide urine antibiograms for 2017, 2018, and 2019, respectively. Stool culture of prostate cancer patients undergoing biopsy may provide useful information for selecting prophylactic antimicrobial agents. 相似文献
8.
Yuji Okuno Wataru Iwamoto Noboru Matsumura Sota Oguro Taku Yasumoto Takao Kaneko Hiroyasu Ikegami 《Journal of vascular and interventional radiology : JVIR》2017,28(2):161-167.e1
Purpose
To evaluate clinical outcomes of transcatheter arterial embolization (TAE) for adhesive capsulitis resistant to conservative treatments.Materials and Methods
This study comprised 25 patients (18 women and 7 men; mean age, 53.8 y; range, 39–68 y) with adhesive capsulitis resistant to conservative treatments. TAE was performed, and adverse events (AEs), pain visual analog scale (VAS) score changes, range of motion (ROM), and American Shoulder and Elbow Surgeons (ASES) scores were assessed.Results
Abnormal vessels were identified in all patients. No major AEs were associated with TAE. One patient was lost to follow-up. The remaining 24 patients were available for final follow-up (mean, 36.1 months; range, 30–44 months). Of the 24 patients, 16 (67%) experienced quick improvement of nighttime pain (ie, VAS scores decreased > 50% from baseline) within 1 week, and 21 (87%) improved within 1 month. In terms of mean overall pain (ie, pain at its worst), VAS scores significantly decreased at 1, 3, and 6 months after treatment (82 mm before treatment vs 52, 19, and 8 mm after treatment; P < .001). ASES scores significantly improved at 1, 3, and 6 months after treatment (16.1 before treatment vs 41.4, 69.1, and 83.5 after treatment; P < .001). No symptom recurrence or late-onset AEs were observed. Shoulder ROM and function further improved during midterm follow-up.Conclusions
TAE is a possible treatment option for patients with adhesive capsulitis that has failed to improve with conservative treatments. 相似文献9.
Pooja Hingorani Wendong Zhang Sajida Piperdi Leyna Pressman Juan Lin Richard Gorlick E. Anders Kolb 《Cancer chemotherapy and pharmacology》2009,64(4):733-740
Purpose Oxazaphosphorines, such as ifosfamide (IFA), are frequently used in the treatment of pediatric sarcomas. They are pro-drugs
and undergo hepatic metabolism into the active moiety and potentially toxic by-products such as acrolein and chloracetaldehyde,
which may cause hemorrhagic cystitis and encephalopathy, respectively. In addition, resistance to oxazaphosphorines can be
mediated by overexpression of enzymes involved in their catabolism. Isophosphoramide mustard (IPM, palifosfamide) is the active
moiety of IFA. In the current study, the activity of palifosfamide lysine (ZIO-201), a stable form of palifosfamide, was evaluated
in a panel of sarcoma cell lines and tumor xenografts including oxazaphosphorine-resistant xenografts.
Methods The cytotoxic effect of palifosfamide lysine was studied in osteosarcoma (OS), Ewing’s sarcoma (ES) and rhabdomyosarcoma (RMS)
cell lines using the MTT assay. In vivo, the maximum tolerated dose (MTD) of palifosfamide lysine was determined in SCID mice
based on a 3-day intravenous (IV) administration schedule. The effect on tumor growth and event-free survival was assessed
at the MTD in all three sarcoma xenografts. In OS, cyclophosphamide (CPA)-resistant and -sensitive xenografts (OS31 and OS33,
respectively) were evaluated for palifosfamide lysine activity. ALDH1A1 and ALDH3A1 gene expression data for the OS xenografts
were mined from the Pediatric Preclinical Testing Program gene expression data. ALDH3A1 enzyme levels were compared between
the CPA-resistant and -sensitive xenografts.
Results Palifosfamide lysine was cytotoxic against all the cell lines tested with the IC50 ranging from 0.5 to 1.5 μg/ml except for OS222, which had an IC50 of 7 μg/ml. The IV MTD of palifosfamide lysine in mice was 100 mg/kg per day for three consecutive days. Tumor growth inhibition
was seen in both OS31 and OS33 xenografts and the RMS xenograft resulting in a significant difference in event-free survival
between the control and the treated groups. Differential gene expression of ALDH3A1 but not ALDH1A1 was noted in the OS31
xenograft. This was confirmed by RT-PCR and the ALDH3A1 enzyme assay. ALDH3A1 enzyme activity was measured at 100 mIU/mg of
protein in OS31 xenograft but no significant activity was seen in the OS33 xenograft.
Conclusions We conclude that palifosfamide lysine has broad activity in a panel of sarcoma cell lines. It inhibits tumor growth in OS
and RMS xenografts. Furthermore, it is active against the CPA-resistant, ALDH3A1 overexpressing, OS xenograft suggesting that
it might have the potential of overcoming this resistance mechanism against oxazaphosphorines and may be an active agent in
resistant/relapsed sarcomas in patients. 相似文献
10.
《Journal of infection and chemotherapy》2021,27(10):1504-1507
A 74-year-old man with diabetic nephropathy undergoing dialysis after total knee arthroplasty presented to our hospital with dyspnea and abnormal behavior such as wearing his pants on his head. The patient was in shock with ventricular tachycardia. Urine and blood cultures showed MAM with sterile pyuria. We administered amikacin and imipenem cilastatin, but repeated cultures were persistently positive. Although we initially chose not to administer azithromycin because of a higher risk of fatal arrhythmia, we had no choice but to administer azithromycin because of treatment failure. Upon close monitoring, we observed no arrhythmia, and the blood cultures became negative. The patient was discharged on day 106 without any symptoms. However, 2 months after discontinuation of antibiotics, he was readmitted and diagnosed with prosthetic joint infection due to MAM. He could not undergo total knee arthroplasty resection because of his low tolerance to surgery. We re-administered same antibiotics, and repeated draining and cleaning of his left knee for several weeks. The inflammation in the knee joint gradually improved, and the patient was discharged while treatment with azithromycin and amikacin was continued. After being discharged, the patient did not experience recurrent disease for at least 6 months.Our case suggests that MAM can cause sterile pyuria and infection in a patient with diabetic nephropathy. The macrolide agent is a key drug for MAM infection, and repeated joint lavage in addition to administering antibiotics may be an alternative treatment for prosthetic joint infection in patients with intolerance to surgery. 相似文献