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Article ; Online: Zinc-doped hydroxyapatite as a pH responsive drug delivery system for anticancer drug 6-mercaptopurine.

Jakubowski, Marcel / Majchrzycki, Łukasz / Zarkov, Aleksej / Voelkel, Adam / Sandomierski, Mariusz

Journal of biomedical materials research. Part B, Applied biomaterials

2024 Volume 112, Issue 3, Page(s) e35395

Abstract: 6-Mercaptopurine (6MP) is commonly used in the treatment of acute lymphoblastic leukemia as an important agent in maintenance therapy. Despite its therapeutic benefits, 6MP has some limitations during therapy. Taking into account the disadvantages during ...

Abstract	6-Mercaptopurine (6MP) is commonly used in the treatment of acute lymphoblastic leukemia as an important agent in maintenance therapy. Despite its therapeutic benefits, 6MP has some limitations during therapy. Taking into account the disadvantages during 6MP therapy, there is a great need to create an appropriate delivery system for this drug. 6MP contains in its structure nitrogen and sulfur atoms capable of forming coordination compounds with metal ions, for example zinc. Therefore, in this work, we prepared biocompatible hydroxyapatite (HAp) doped with zinc ions, and used it as a carrier for 6MP. Doped HAp has not been used as a carrier for this drug before. The work proved that the prepared carrier-drug system has a particle size of about 130 nm, which indicates its potential for intravenous delivery. In addition, in an acidic environment (imitating cancer cells), the carrier agglomerates allow targeted release of the drug. The drug is evenly distributed, which indicates that the doses released from it will always be comparable. The release of the drug in a neutral environment is long-lasting in controlled doses, whereas in an acidic environment it is immediate. The obtained results indicate the high potential of the material in both slow-release and cancer-targeted release of 6MP.
MeSH term(s)	Mercaptopurine/pharmacology ; Zinc/pharmacology ; Drug Delivery Systems ; Durapatite/pharmacology ; Antineoplastic Agents/pharmacology ; Ions ; Hydrogen-Ion Concentration
Chemical Substances	Mercaptopurine (E7WED276I5) ; Zinc (J41CSQ7QDS) ; Durapatite (91D9GV0Z28) ; Antineoplastic Agents ; Ions
Language	English
Publishing date	2024-03-04
Publishing country	United States
Document type	Journal Article
ZDB-ID	2099992-6
ISSN	1552-4981 ; 1552-4973 ; 0021-9304
ISSN (online)	1552-4981
ISSN	1552-4973 ; 0021-9304
DOI	10.1002/jbm.b.35395
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Article ; Online: Three decades of research in substance use disorder treatment for syringe services program participants: a scoping review of the literature.

Jakubowski, Andrea / Fowler, Sabrina / Fox, Aaron D

Addiction science & clinical practice

2023 Volume 18, Issue 1, Page(s) 40

Abstract: Background: Syringe services programs (SSPs) provide a spectrum of health services to people who use drugs, with many providing referral and linkage to substance use disorder (SUD) treatment, and some offering co-located treatment with medications for ... ...

Abstract	Background: Syringe services programs (SSPs) provide a spectrum of health services to people who use drugs, with many providing referral and linkage to substance use disorder (SUD) treatment, and some offering co-located treatment with medications for opioid use disorder (MOUD). The objective of this study was to review the evidence for SSPs as an entry point for SUD treatment with particular attention to co-located (onsite) MOUD. Methods: We performed a scoping review of the literature on SUD treatment for SSP participants. Our initial query in PubMed led to title and abstract screening of 3587 articles, followed by full text review of 173, leading to a final total of 51 relevant articles. Most articles fell into four categories: (1) description of SSP participants' SUD treatment utilization; (2) interventions to link SSP participants to SUD treatment; (3) post-linkage SUD treatment outcomes; (4) onsite MOUD at SSPs. Results: SSP participation is associated with entering SUD treatment. Barriers to treatment entry for SSP participants include: use of stimulants, lack of health insurance, residing far from treatment programs, lack of available appointments, and work or childcare responsibilities. A small number of clinical trials demonstrate that two interventions (motivational enhancement therapy with financial incentives and strength-based case management) are effective for linking SSP participants to MOUD or any SUD treatment. SSP participants who initiate MOUD reduce their substance use, risk behaviors, and have moderate retention in treatment. An increasing number of SSPs across the United States offer onsite buprenorphine treatment, and a number of single-site studies demonstrate that patients who initiate buprenorphine treatment at SSPs reduce opioid use, risk behaviors, and have similar retention in treatment to patients in office-based treatment programs. Conclusions: SSPs can successfully refer participants to SUD treatment and deliver onsite buprenorphine treatment. Future studies should explore strategies to optimize the implementation of onsite buprenorphine. Because linkage rates were suboptimal for methadone, offering onsite methadone treatment at SSPs may be an appealing solution, but would require changes in federal regulations. In tandem with continuing to develop onsite treatment capacity, funding should support evidence-based linkage interventions and increasing accessibility, availability, affordability and acceptability of SUD treatment programs.
MeSH term(s)	Humans ; Case Management ; Buprenorphine/therapeutic use ; Central Nervous System Stimulants ; Methadone ; Motivational Interviewing ; Opioid-Related Disorders/drug therapy ; Opiate Substitution Treatment
Chemical Substances	Buprenorphine (40D3SCR4GZ) ; Central Nervous System Stimulants ; Methadone (UC6VBE7V1Z)
Language	English
Publishing date	2023-06-10
Publishing country	England
Document type	Review ; Journal Article ; Research Support, N.I.H., Extramural
ZDB-ID	2492632-2
ISSN	1940-0640 ; 1940-0640
ISSN (online)	1940-0640
ISSN	1940-0640
DOI	10.1186/s13722-023-00394-x
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Article: Radial Variability of Selected Physical and Mechanical Parameters of Juvenile Paulownia Wood from Extensive Cultivation in Central Europe-Case Study.

Tomczak, Karol / Mania, Przemysław / Jakubowski, Marcin / Tomczak, Arkadiusz

Materials (Basel, Switzerland)

2023 Volume 16, Issue 7

Abstract: The research on Paulownia cultivation and wood properties is up to date in many countries. However, there are no data on the properties of this wood defined on a microscale, on microtome samples. The main aim of this study was to find the best ... ...

Abstract	The research on Paulownia cultivation and wood properties is up to date in many countries. However, there are no data on the properties of this wood defined on a microscale, on microtome samples. The main aim of this study was to find the best valorization path for the wood of Paulownia Shang Tong Hybrid F1 from an extensively cultivated plantation established in April 2017 in Poland by determining the tensile strength, the wood density, the strength-to-density ratio, and the modulus of elasticity on a cross-section of the trunk. The wood was collected from extensive plantation, where production is based on the natural resources of the habitat and ambient weather conditions, which is the opposite to the intensive cultivation model, which is the recommended model of Paulownia cultivation. The results of this study show that the mean density of the analyzed samples was approximately 210 kg/m
Language	English
Publishing date	2023-03-25
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma16072615
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Article ; Online: Unwinding the tangle of adolescent pregnancy and socio-economic functioning: leveraging administrative data from Manitoba, Canada.

Jakubowski, Aleksandra / Roos, Leslie L / Wall-Wieler, Elizabeth

BMC pregnancy and childbirth

2023 Volume 23, Issue 1, Page(s) 140

Abstract: Background: Understanding the relationship between adolescent pregnancy and adult education and employment outcomes is complicated due to the endogeneity of fertility behaviors and socio-economic functioning. Studies exploring adolescent pregnancy have ... ...

Abstract	Background: Understanding the relationship between adolescent pregnancy and adult education and employment outcomes is complicated due to the endogeneity of fertility behaviors and socio-economic functioning. Studies exploring adolescent pregnancy have often relied on limited data to measure adolescent pregnancy (i.e. birth during adolescence or self-reports) and lack access to objective measures of school performance during childhood. Methods: We use rich administrative data from Manitoba, Canada, to assess women's functioning during childhood (including pre-pregnancy academic performance), fertility behaviors during adolescence (live birth, abortion, pregnancy loss, or no history of pregnancy), and adult outcomes of high school completion and receipt of income assistance. This rich set of covariates allows calculating propensity score weights to help adjust for characteristics possibly predictive of adolescent pregnancy. We also explore which risk factors are associated with the study outcomes. Results: We assessed a cohort of 65,732 women, of whom 93.5% had no teen pregnancy, 3.8% had a live birth, 2.6% had abortion, and < 1% had a pregnancy loss. Women with a history of adolescent pregnancy were less likely to complete high school regardless of the outcome of that pregnancy. The probability of dropping out of high school was 7.5% for women with no history of adolescent pregnancy; after adjusting for individual, household, and neighborhood characteristics, the probability of dropping out of high school was 14.2 percentage points (pp) higher (95% CI 12.0-16.5) for women with live birth, 7.6 pp. higher (95% CI 1.5-13.7) for women with a pregnancy loss, and 6.9 pp. higher (95% CI 5.2-8.6) for women who had abortion. They key risk factors for never completing high school are poor or average school performance in 9th grade. Women who had a live births during adolescence were much more likely to receive income assistance than any other group in the sample. Aside from poor school performance, growing up in poor households and in poor neighborhoods were also highly predictive of receiving income assistance during adulthood. Discussion: The administrative data used in this study enabled us to assess the relationship between adolescent pregnancy and adult outcomes after controlling for a rich set of individual-, household-, and neighborhood-level characteristics. Adolescent pregnancy was associated with higher risk of never completing high school regardless of the pregnancy outcome. Receipt of income assistance was significantly higher for women having a live birth, but only marginally higher for those who had a pregnancy that ended in loss or termination, underlining the harsh economic consequences of caring for a child as a young mother. Our data suggest that interventions targeting young women with poor or average school marks may be especially effective public policy priorities.
MeSH term(s)	Adolescent ; Adult ; Child ; Female ; Pregnancy ; Humans ; Manitoba ; Canada ; Pregnancy in Adolescence ; Abortion, Spontaneous ; Educational Status
Language	English
Publishing date	2023-03-04
Publishing country	England
Document type	Journal Article
ZDB-ID	2059869-5
ISSN	1471-2393 ; 1471-2393
ISSN (online)	1471-2393
ISSN	1471-2393
DOI	10.1186/s12884-023-05443-6
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Article ; Online: Titanium modification using bioactive titanate layer with divalent ions and coordinated ciprofloxacin - Assessment of drug distribution using FT-IR imaging.

Sandomierski, Mariusz / Jakubowski, Marcel / Ratajczak, Maria / Voelkel, Adam

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

2023 Volume 304, Page(s) 123365

Abstract: The paper presents a new method of titanium alloy (Ti6Al4V) modification using bioactive titanate layers containing various divalent ions ( ... ...

Abstract	The paper presents a new method of titanium alloy (Ti6Al4V) modification using bioactive titanate layers containing various divalent ions (Ca
MeSH term(s)	Titanium ; Ciprofloxacin ; Spectroscopy, Fourier Transform Infrared ; Surface Properties ; Alloys ; Strontium ; Zinc ; Microscopy, Electron, Scanning ; Anti-Bacterial Agents ; Cations
Chemical Substances	Titanium (D1JT611TNE) ; Ciprofloxacin (5E8K9I0O4U) ; Alloys ; Strontium (YZS2RPE8LE) ; Zinc (J41CSQ7QDS) ; Anti-Bacterial Agents ; Cations
Language	English
Publishing date	2023-09-06
Publishing country	England
Document type	Journal Article
ZDB-ID	210413-1
ISSN	1873-3557 ; 0370-8322 ; 0584-8539 ; 1386-1425
ISSN (online)	1873-3557
ISSN	0370-8322 ; 0584-8539 ; 1386-1425
DOI	10.1016/j.saa.2023.123365
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Article: Doppler ultrasound-based evaluation of hemodynamic changes in the ophthalmic artery and central retinal artery in patients with type 1 diabetes mellitus without retinopathy and with mild non-proliferative retinopathy.

Pauk-Domańska, Magdalena / Wilczewska, Agnieszka / Jaguś, Dominika / Kaczyński, Bartosz / Jakubowski, Wiesław

Journal of ultrasonography

2024 Volume 24, Issue 96, Page(s) 20240009

Abstract: Aim: Determination of blood flow parameters in the ophthalmic artery and central retinal artery using Doppler ultrasound in patients with type 1 diabetes mellitus without fundus signs of diabetic retinopathy and with mild non-proliferative retinopathy.!# ...

Abstract	Aim: Determination of blood flow parameters in the ophthalmic artery and central retinal artery using Doppler ultrasound in patients with type 1 diabetes mellitus without fundus signs of diabetic retinopathy and with mild non-proliferative retinopathy. Material and methods: To eliminate the impact of other systemic factors on vascular flow, the study enrolled a total of 80 patients with type 1 diabetes mellitus, aged between 18 and 45 years. The study participants did not have any diabetic complications or other systemic or ocular comorbidities. The control group comprised 81 healthy individuals within a similar age range. Color Doppler ultrasound examinations of the ophthalmic artery and central retinal artery were performed to evaluate selected blood flow parameters including peak systolic velocity, end-diastolic velocity, and resistance index. Results: Patients with type 1 diabetes mellitus exhibited statistically significant decrease in both systolic and end-diastolic velocities in the central retinal artery, accompanied by an elevation in resistance index, compared to the control group. The study revealed differences in blood flow parameters between the patients without fundus changes and those exhibiting mild non-proliferative retinopathy. Specifically, patients with retinopathy showed a significant decrease in both systolic velocity and end-diastolic velocity in the central retinal artery. No differences were observed for the same parameters in the ophthalmic artery. When analyzing the patients' blood flow parameters in relation to the degree of diabetes control, as determined by glycated hemoglobin levels, a statistically significant reduction in systolic velocity was identified in both the ophthalmic and central retinal arteries in the group with poorly controlled diabetes. Conclusions: Examination of the orbital vessels using Doppler ultrasound in patients with type 1 diabetes mellitus holds promise as an effective method for early detection of vascular abnormalities.
Language	English
Publishing date	2024-03-14
Publishing country	Poland
Document type	Journal Article
ZDB-ID	2843824-3
ISSN	2084-8404
ISSN	2084-8404
DOI	10.15557/jou.2024.0009
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Article ; Online: Accelerometer techniques for capturing human movement validated against direct observation: a scoping review.

Letts, Elyse / Jakubowski, Josephine S / King-Dowling, Sara / Clevenger, Kimberly A / Kobsar, Dylan / Obeid, Joyce

Physiological measurement

2024

Abstract: Introduction: Accelerometers are devices commonly used to measure human physical activity and sedentary time. Accelerometer capabilities and analytical techniques have evolved rapidly, making it difficult for researchers to keep track of advances and ... ...

Abstract	Introduction: Accelerometers are devices commonly used to measure human physical activity and sedentary time. Accelerometer capabilities and analytical techniques have evolved rapidly, making it difficult for researchers to keep track of advances and best practices for data processing and analysis. Objective: The objective of this scoping review is to determine the existing methods for analyzing accelerometer data for capturing human movement which have been validated against the criterion measure of direct observation. Methods: This scoping review searched 14 academic and 5 grey databases. Two independent raters screened by title and abstract, then full text. Data were extracted using Microsoft Excel and checked by an independent reviewer. Results: The search yielded 1039 papers and the final analysis included 115 papers. 71 unique accelerometer models were used across a total of 4217 participants. While all studies underwent validation from direct observation, most direct observation occurred live (55%) or using recordings (42%). Analysis techniques included machine learning approaches (22%), the use of existing cut-points (18%), ROC curves to determine cut-points (14%), and other strategies including regressions and non-machine learning algorithms (8%). Discussion: Machine learning techniques are becoming more prevalent and are often used for activity identification. Cut-point methods are still frequently used. Activity intensity is the most assessed activity outcome; however, both the analyses and outcomes assessed vary by wear location. Conclusions: This scoping review provides a comprehensive overview of accelerometer analysis and validation techniques using direct observation and is a useful tool for researchers using accelerometers.
Language	English
Publishing date	2024-04-30
Publishing country	England
Document type	Journal Article
ZDB-ID	1149545-5
ISSN	1361-6579 ; 0967-3334
ISSN (online)	1361-6579
ISSN	0967-3334
DOI	10.1088/1361-6579/ad45aa
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Article ; Online: Letter in Reply.

Jakubowski, Andrea / Fox, Aaron

Journal of addiction medicine

2020 Volume 15, Issue 1, Page(s) 88–89

Language	English
Publishing date	2020-05-30
Publishing country	United States
Document type	Letter ; Research Support, N.I.H., Extramural
ISSN	1935-3227
ISSN (online)	1935-3227
DOI	10.1097/ADM.0000000000000692
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Article ; Online: Zeolitic Imidazolate Framework‑8 (ZIF-8) modified titanium alloy for controlled release of drugs for osteoporosis.

Sandomierski, Mariusz / Jakubowski, Marcel / Ratajczak, Maria / Voelkel, Adam

Scientific reports

2022 Volume 12, Issue 1, Page(s) 9103

Abstract: The aim of this work was to prepare a biocompatible implant material that enables the release of drug for osteoporosis-risedronate. To achieve this goal, a titanium implant coated with a biocompatible Zeolitic Imidazolate Framework 8 (ZIF-8) layer was ... ...

Abstract	The aim of this work was to prepare a biocompatible implant material that enables the release of drug for osteoporosis-risedronate. To achieve this goal, a titanium implant coated with a biocompatible Zeolitic Imidazolate Framework 8 (ZIF-8) layer was prepared that promotes osseointegration at the bone-implant interface. The modifications of the titanium alloy as well as sorption and desorption processes were confirmed using a variety of methods: SEM, EDS XPS, and FT-IR imaging (to determine surface modification, drug distribution, and risedronate sorption), and UV-Vis spectroscopy (to determine drug sorption and release profile). Both the ZIF-8 layer and the drug are evenly distributed on the surface of the titanium alloy. The obtained ZIF-8 layer did not contain impurities and zinc ions were strongly bounded by ZIF-8 layer. The ZIF-8 layer was stable during drug sorption. The drug was released in small doses for 16 h, which may help patients recover immediately after surgery. This is the first case of using ZIF-8 on the surface of the titanium alloy as carrier that releases the drug under the influence of body fluids directly at the site of the disease. It is an ideal material for implants designed for people suffering from osteoporosis.
MeSH term(s)	Alloys ; Delayed-Action Preparations ; Humans ; Osteoporosis/drug therapy ; Risedronic Acid ; Spectroscopy, Fourier Transform Infrared ; Titanium ; Zeolites/chemistry
Chemical Substances	Alloys ; Delayed-Action Preparations ; Zeolites (1318-02-1) ; Titanium (D1JT611TNE) ; Risedronic Acid (KM2Z91756Z)
Language	English
Publishing date	2022-06-01
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-022-13187-0
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Article ; Online: Drug distribution evaluation using FT-IR imaging on the surface of a titanium alloy coated with zinc titanate with potential application in the release of drugs for osteoporosis.

Sandomierski, Mariusz / Jakubowski, Marcel / Ratajczak, Maria / Voelkel, Adam

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

2022 Volume 281, Page(s) 121575

Abstract: The drugs most commonly used in the treatment of osteoporosis are bisphosphonates. This disease results in low mineral density and a weakened bone microstructure. The delivery methods for these drugs have many disadvantages, and new ones are being ... ...

Abstract	The drugs most commonly used in the treatment of osteoporosis are bisphosphonates. This disease results in low mineral density and a weakened bone microstructure. The delivery methods for these drugs have many disadvantages, and new ones are being searched for. In this work, biocompatible zinc titanate coated titanium implants were obtained as potential new carriers for drugs. Such a material will release the drug, and it will have antibacterial properties. Gradual release of the bisphosphonate will have a positive effect on the recovery process and osteointegration. In addition, the drug will be released around the affected bones. The effectiveness of the modification and attachment of the drug was confirmed by SEM, XPS, EDS, FT-IR imaging, and UV-VIS. It was shown that the risedronate could be almost completely released upon contact with body fluids within a week. The drug is evenly distributed over the entire surface of the alloy as confirmed by FT-IR imaging. The results presented in this work will allow for the preparation of endoprostheses that release the drug and have antibacterial properties.
MeSH term(s)	Alloys ; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/pharmacology ; Coated Materials, Biocompatible/chemistry ; Humans ; Osteoporosis/diagnostic imaging ; Osteoporosis/drug therapy ; Pharmaceutical Preparations ; Spectroscopy, Fourier Transform Infrared ; Surface Properties ; Titanium/chemistry ; Zinc
Chemical Substances	Alloys ; Anti-Bacterial Agents ; Coated Materials, Biocompatible ; Pharmaceutical Preparations ; Titanium (D1JT611TNE) ; Zinc (J41CSQ7QDS)
Language	English
Publishing date	2022-07-02
Publishing country	England
Document type	Journal Article
ZDB-ID	210413-1
ISSN	1873-3557 ; 0370-8322 ; 0584-8539 ; 1386-1425
ISSN (online)	1873-3557
ISSN	0370-8322 ; 0584-8539 ; 1386-1425
DOI	10.1016/j.saa.2022.121575
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