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Biomedical subjects

Edward B Miller

Publications and source records attributed to Edward B Miller.

7 recordsLinked to original sources
PubMed2006

Production, purification and preliminary X-ray crystallographic studies of adeno-associated virus serotype 1.

Crystals of baculovirus-expressed adeno-associated virus serotype 1 (AAV1) capsids have been grown in the rhombohedral space group R32 (unit-cell parameters a = 254.7 A, alpha = 62.3 degrees) and shown to diffract X-rays to at least 2.5 A resolution. The diffraction data were subsequently processed and reduced with an overall R(sym) of 12.3% and a completeness of 89.0%. Based on the unit-cell volume, rotation-function and translation-function results and packing considerations, there is one virus capsid (60 viral proteins) per unit cell and there are ten viral proteins per crystallographic asymmetric unit. The AAV1 capsid shares both the twofold and threefold crystallographic symmetry operators. The AAV1 data have been initially phased using a polyalanine model (based on the crystal structure of AAV4) to 4.0 A resolution and the structure determination and refinement is in progress using tenfold noncrystallographic symmetry electron-density averaging.

Capsid↗
PubMed2006

Granulomatous hepatitis and Sjogren's syndrome: an association.

BACKGROUND: Sjogren's syndrome (SS) is a common autoimmune disorder in which liver involvement is frequent, but generally mild and subclinical. Multiple hepatic histologies have been reported, but to our knowledge an association with granulomatous hepatitis (GH) has never been described. We recently evaluated an individual in whom biopsy-proven GH was associated with concomitant SS. OBJECTIVE: To clarify the possible association between GH and SS. METHODS: We retrospectively reviewed all cases of biopsy-proven GH seen in our institution from 1991 to 2004. Overall, there were 16 individuals with GH identified of which 4 were considered idiopathic in origin. These individuals underwent an extensive evaluation for the presence of SS as well as other disorders known to be associated with GH. RESULTS: Of the 4 identified cases with a previously suspected idiopathic GH, 3 met criteria for primary SS. All 3 individuals underwent minor salivary gland biopsy, which was diagnostic for this condition. CONCLUSIONS: These results suggest a likely association between these 2 conditions. Further epidemiological studies will be necessary to confirm this finding.

Adult↗
PubMed2006

Topical hyperbaric oxygen and low-energy laser for the treatment of chronic ulcers.

BACKGROUND: Diabetic foot ulcers (DFU) and chronic venous ulcers (CVU) are persistent cutaneous lesions that are difficult to treat and heal. Topical hyperbaric oxygen (THO) and low-energy laser (LEL) are therapies that have been employed separately for ulcer treatment, but their concomitant use has not been investigated. METHODS: In this unblinded, open-label non-randomized trial, we treated 374 consecutive patients with treatment-refractory chronic ulcers (218 patients with DFU and 156 individuals with CVU) with a combination of THO and LEL. THO was administered by pumping 100% oxygen into a disposable, sealed polyethylene chamber for 2 h, two to three times weekly. LEL was administered concurrently using a helium-neon laser at 4 J/cm(2) for 20 min. RESULTS: Complete ulcer closure was obtained in 78% of patients in each group (170 patients with DFU and 127 patients with CVU). Treatment failure resulting in amputation in DFU was seen in 48 patients (22%); non-closure of ulcers within 18 months in individuals with CVU was seen in 29 (22%). The length of therapy was also similar in the two groups (3.7+/-3 versus 4.1+/-3 months in DFU and CVU cohorts, respectively). However, the number of treatments required to affect healing was greater in the CVU group than among the DFU patients (40+/-25 versus 31.4+/-20 treatments). CONCLUSION: THO and LEL therapies are safe, effective, simple and inexpensive therapies for DFU and CVU. Confirmation must await the performance of double-blind, randomized, controlled trials currently under way.

Journal Article↗
PubMed2005

Recurrent herpes simplex encephalitis.

Recurrent herpes simplex virus (HSV) encephalitis is a rare disorder with only a few cases reported. We report a case of HSV encephalitis with documented recurrence in the same anatomic location, lending support to the theory of reactivation as the mechanism of disease.

Journal Article↗
PubMed2004

Adverse drug reactions due to prolonged antibiotic therapy for malignant external otitis.

BACKGROUND: Malignant external otitis (MEO) is a life-threatening infection requiring prolonged antibiotic therapy. Adverse drug reactions (ADR) occur frequently in patients treated with long-term antibiotics, often limiting treatment effectiveness. We attempted to identify and categorize the frequency and type of ADR in patients undergoing treatment for MEO in an attempt to improve overall treatment of individuals with this disorder. METHODS: Twenty-one patients with MEO who were treated during a 10-year period at our institution were identified retrospectively. Records were reviewed to determine demographic and clinical information as well as laboratory data. RESULTS: Overall, ADR occurred in six individuals (26.8%). Of the 15 patients who received ciprofloxacin therapy, none experienced ADR. In contrast, six of the nine patients who were treated with beta-lactam antibiotics experienced ADR including urticaria, elevated serum transaminase levels and neutropenia. CONCLUSIONS: Prolonged antibiotic therapy for MEO with beta-lactam antibiotics is more likely to be complicated by ADR and requires careful monitoring.

Journal Article↗