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Nevin Manimala Statistics

Evaluation of a flow cytometry-based method for determination of T-lymphocyte subtypes for quality assessment of cell therapy products

Scand J Clin Lab Invest. 2024 Jul 14:1-5. doi: 10.1080/00365513.2024.2377961. Online ahead of print.

ABSTRACT

Chimeric antigen receptor-T (CAR-T) cell therapy is currently the best-known type of immune effector cells therapy. For CAR T-cell therapy, the determination of CD3+ T cells is necessary for the quality control of fresh leukapheresis product as starting material. The aim was to validate analytical method for quantification of percentage and absolute count of T lymphocyte subtypes (CD3+, CD4+ and CD8+ cells) in fresh apheresis products using single-platform method on flow cytometer BD FACS Canto II. Validation study included determination of precision, trueness (bias), assessment of linearity, carryover, comparison of results obtained with two different protocols on flow cytometer for CD3+ cells determination and stability study. For between-run precision coefficients of variation (CVs) were <20%, as well as bias for all T-lymphocyte subtypes. For within-run precision, CVs were <10%, except for low CD8+ cell (percentage 10.51% and viable absolute count 12.37%). Comparison of results obtained with two different protocols for CD3+ cells determination shows no statistically significant difference. Statistically significant differences between results of the analysis of CD4+ cells in fresh samples and results obtained after storage at 4 °C (p = .004) and at room temperature (p = .018) were found. In conclusion, method for enumeration of T-lymphocyte subtypes can be used in routine work on BD FACS Canto II instrument for quality assessment of fresh cell products collected by leukapheresis procedure.

PMID:39003578 | DOI:10.1080/00365513.2024.2377961

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Radiographic evaluation of the forelimb bone development in maned wolves (Chrysocyon brachyurus)

Anat Histol Embryol. 2024 Jul;53(4):e13091. doi: 10.1111/ahe.13091.

ABSTRACT

This study aimed to assess the fusion of growth plates and the development of secondary ossification centres in the forelimb bones of maned wolves (Chrysocyon brachyurus), contrasting the findings with established data from domestic dogs. Three maned wolves, comprising one male and two females, initially aged between 3 and 4 months, were subjected to monthly radiographic evaluations until 10-11 months of age, followed by bimonthly assessments until 18-19 months of age, encompassing both forelimbs. The closure times of growth plates were observed as follows: supraglenoid tubercle (7-8 months), proximal humerus (17-19 months), distal humerus (8-9 months), medial epicondyle of the humerus (8-9 months), proximal ulna (9-10 months), proximal radius (13-15 months), distal ulna (13-15 months) and distal radius (17-19 months). Statistical analysis revealed significant differences in the areas of secondary ossification centres in the proximal epiphyses of the humerus and radius, respectively, observed from the initial evaluation at 8-9 months and 6-7 months. Conversely, the epiphyses of the supraglenoid tubercle, distal humerus, proximal ulna, distal ulna, medial epicondyle of the humerus and distal radius did not exhibit significant area differences between 3-4 months and 4-5 months, yet notable distinctions emerged at 5-6 months. In summary, while the radiographic appearance of epiphyseal growth plates and secondary ossification centres in maned wolves resembles that of domestic dogs, closure times vary. These findings contribute to understanding the dynamics of epiphyseal growth plates in this species.

PMID:39003574 | DOI:10.1111/ahe.13091

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Nevin Manimala Statistics

Arkady Mihailovich Merkov (1899-1971): to the 125th Anniversary

Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med. 2024 May;32(3):495-498. doi: 10.32687/0869-866X-2024-32-3-495-498.

ABSTRACT

The article takes up scientific, teaching and organizational activities of Arkady Mikhailovich Merkov, professor and doctor of medical sciences. A. M. Merkov is prominent specialist in the field of social hygiene and health care organization. He is author of about 200 works, including 23 monographs devoted to sanitary and demographic statistics and statistics of malignant neoplasms.

PMID:39003561 | DOI:10.32687/0869-866X-2024-32-3-495-498

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Nevin Manimala Statistics

The venereal morbidity in Russia in 1914-1924

Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med. 2024 May;32(3):484-489. doi: 10.32687/0869-866X-2024-32-3-484-489.

ABSTRACT

It is accepted to explain increasing of venereal diseases during years of the Revolution by degradation of morality and general disorder of system of state administration and sanitary services in Russia. The cross-verification of information presented in scientific publications and primary information sources makes it possible to look into following issues: degree of venereal (syphilitic) contamination of population of pre-revolutionary Russia; influence on sanitary statistics by erroneous diagnostics and convictions of Zemstvo medicine about predominantly non-sexual path of transmission of syphilis pathogen in Russian countryside; dynamics and sources of venereal morbidity in wartime. The high indicators of pre-revolutionary statistics of venereal infections could be affected by diagnostic errors. The “village syphilis” encountered in public milieu could be completely different disease not sexually transmitted and not chronic form of disease. The primary documents allow to discuss increasing of the number of venereal patients during war years, that however, does not reach catastrophic numbers that can be found even in scientific publications. This is also confirmed by data of Chief Military Sanitary Board of the Red Army for 1920s and statistical materials of People’s Commissariat of Health Care of the RSFSR. The high morbidity was demonstrated by same Gubernias that were problematic before the Revolution and only later by those ones through which during the war years passed army masses. In Russia, total level of syphilis morbidity after the end of Civil War occurred to be more than twice lower than in pre-war 1913 and continued to decrease under impact of sanitary measures of Soviet public health.

PMID:39003559 | DOI:10.32687/0869-866X-2024-32-3-484-489

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Nevin Manimala Statistics

The readiness of Kazakhstan to implementation of medicinal insurance: the sociological substantiation and education activities of public organizations

Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med. 2024 May;32(3):456-461. doi: 10.32687/0869-866X-2024-32-3-456-461.

ABSTRACT

Until recently, in Kazakhstan, both health care services and medication support of population were financed from National budget and compulsory social health insurance foundation. But actual system meet needs of Kazakhstanis in medications not in full measure. The purpose of the study is to identify readiness of citizens to implementation of new medicinal insurance program with state co-financing. The study was carried out in 2022 in 17 regions of Kazakhstan. The readiness of Kazakhstanis to participate in medicinal insurance program with state co-financing was studied through sociological survey of 5 819 Kazakhstanis. The sociological survey revealed that respondents express average degree of readiness to implementation of new medicinal insurance program with state co-financing and to purchasing of insurance policy. The correlation between social demographic characteristics (objective indicators) and readiness indicator (subjective indicator) was revealed. The younger males with higher education, residing in urban areas, with average and high income and officially married are more inclined to purchase insurance policy. At that, according to results of sociological survey, one third of respondents have no relevant information about health insurance in general and medicinal insurance in particular. They found it difficult to express their personal position about this issues. It is supposed that Kazakhstanis in the result of educational measures will take part in medicinal insurance program with state co-financing. The education projects can be implemented through public organizations operating locally and communicating with population at the micro level. It is determined that it is especially important to apply educational measures to rural residents, middle-aged and elderly people, females and persons with low average income per family member.

PMID:39003554 | DOI:10.32687/0869-866X-2024-32-3-456-461

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Nevin Manimala Statistics

The analysis of demand in pathoanatomists applying staff standards

Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med. 2024 May;32(3):445-451. doi: 10.32687/0869-866X-2024-32-3-445-451.

ABSTRACT

The objective analysis of state of medical personnel, along with assessment of real need for specialists, is the basis of improving activities of any health care service. In relation to pathologists, there is unique opportunity to perform similar analysis, based on application of current corresponding staff standards that consider volume of workload of physicians in order to determine required number of positions. The implementation of corresponding original methodology permitted to establish that the actual number of staff positions of pathologists in 2022 amounted up to average 40.6% of the number required according to staffing standards in the Irkutsk Oblast. The physician staffing ratio, calculated on the basis of required number of positions found according to proposed methodology, decreases to 29.1% and staffing with physicians excluding combined jobs to 17.1%. At that, implemented workload per one pathologist reaches 5.9 of standard positions. The deficiency of representatives of this specialty in the region, even if current combined jobs ratio is maintained, is 154 specialists.

PMID:39003553 | DOI:10.32687/0869-866X-2024-32-3-445-451

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DNA Methylation-derived biological age and long-term mortality risk in subjects with type 2 diabetes

Cardiovasc Diabetol. 2024 Jul 13;23(1):250. doi: 10.1186/s12933-024-02351-7.

ABSTRACT

BACKGROUND: Individuals with type 2 diabetes (T2D) face an increased mortality risk, not fully captured by canonical risk factors. Biological age estimation through DNA methylation (DNAm), i.e. the epigenetic clocks, is emerging as a possible tool to improve risk stratification for multiple outcomes. However, whether these tools predict mortality independently of canonical risk factors in subjects with T2D is unknown.

METHODS: Among a cohort of 568 T2D patients followed for 16.8 years, we selected a subgroup of 50 subjects, 27 survived and 23 deceased at present, passing the quality check and balanced for all risk factors after propensity score matching. We analyzed DNAm from peripheral blood leukocytes using the Infinium Human MethylationEPIC BeadChip (Illumina) to evaluate biological aging through previously validated epigenetic clocks and assess the DNAm-estimated levels of selected inflammatory proteins and blood cell counts. We tested the associations of these estimates with mortality using two-stage residual-outcome regression analysis, creating a reference model on data from the group of survived patients.

RESULTS: Deceased subjects had higher median epigenetic age expressed with DNAmPhenoAge algorithm (57.49 [54.72; 60.58] years. vs. 53.40 [49.73; 56.75] years; p = 0.012), and accelerated DunedinPoAm pace of aging (1.05 [1.02; 1.11] vs. 1.02 [0.98; 1.06]; p = 0.012). DNAm PhenoAge (HR 1.16, 95% CI 1.05-1.28; p = 0.004) and DunedinPoAm (HR 3.65, 95% CI 1.43-9.35; p = 0.007) showed an association with mortality independently of canonical risk factors. The epigenetic predictors of 3 chronic inflammation-related proteins, i.e. CXCL10, CXCL11 and enRAGE, C-reactive protein methylation risk score and DNAm-based estimates of exhausted CD8 + T cell counts were higher in deceased subjects when compared to survived.

CONCLUSIONS: These findings suggest that biological aging, as estimated through existing epigenetic tools, is associated with mortality risk in individuals with T2D, independently of common risk factors and that increased DNAm-surrogates of inflammatory protein levels characterize deceased T2D patients. Replication in larger cohorts is needed to assess the potential of this approach to refine mortality risk in T2D.

PMID:39003492 | DOI:10.1186/s12933-024-02351-7

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Foraging for the future: traditional culinary uses of wild plants in the Western Himalayas-Kashmir Valley (India)

J Ethnobiol Ethnomed. 2024 Jul 13;20(1):66. doi: 10.1186/s13002-024-00707-7.

ABSTRACT

BACKGROUND: In the intricate tapestry of food security, wild food species stand as pillars, nourishing millions in low-income communities, and reflecting the resilience and adaptability of human societies. Their significance extends beyond mere sustenance, intertwining with cultural traditions and local knowledge systems, underscoring the importance of preserving biodiversity and traditional practices for sustainable livelihoods.

METHODS: The present study, conducted between February 2022 and August 2023 along the Line of Control in India’s Kashmir Valley, employed a rigorous data collection encompassing semi-structured interviews, focus group discussions, and specific field observations facilitated through a snowball sampling technique.

RESULTS AND DISCUSSION: The comprehensive inventory includes 108 edible plant and fungal species from 48 taxonomic families, with Rosaceae (N = 11) standing out. Young and soft leaves (N = 60) are an important component of various culinary preparations, with vegetables (N = 65) being the main use, followed by fruits (N = 19). This use is seasonal, with collection peaks in March-April and June-August (N = 12). The study also highlights the importance of use value (UV), with Portulaca oleracea standing out as the plant taxon (UV = 0.61), while Asyneuma thomsoni has the lowest use value (UV = 0.15). Many species such as Senecio chrysanthemoides, Asperugo procumbens, Asyneuma thomsoni, and Potentilla nepalensis were classified as new for gastronomic use. Furthermore, the study underlines the great cultural importance of mushrooms such as Morchella esculenta and Geopora arenicola in influencing social hierarchies within the community. However, the transmission of traditional knowledge across generations is declining in the region. At the same time, the conservation of endangered plant species on the IUCN Red List, such as Trillium govanianum, Taxus wallichiana, Saussurea costus, and Podophyllum hexandrum, requires immediate attention.

CONCLUSION: Conservation measures should be prioritized, and proactive remedial action is needed. Further research into the nutritional value of these edible species could pave the way for their commercial cultivation, which would mean potential economic growth for local communities, make an important contribution to food security in the area under study, and contribute to scientific progress.

PMID:39003490 | DOI:10.1186/s13002-024-00707-7

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Nevin Manimala Statistics

Ethical requirements of instructions for authors of complementary and alternative medicine journals: a cross-sectional study

BMC Med Ethics. 2024 Jul 13;25(1):77. doi: 10.1186/s12910-024-01077-1.

ABSTRACT

BACKGROUND: Medical research in complementary and alternative medicine (CAM) has increased recently, raising ethical concerns about the moral status of CAM. Medical academic journals are responsible for conducting ethical review (ER) of manuscripts to protect the interests of human subjects and to make ethical results available before deciding to publish. However, there has been no systematic analysis of the ER in CAM journals. This study is aim to evaluate the current status of ethical requirements and compliance in CAM journals.

METHODS: This is a cross-sectional study. We reviewed instructions for authors (IFAs) of CAM journals included in the Journal Citation Reports (2021) ( https://jcr.clarivate.com ) for general information and requirements for ER. We also browsed the manuscripts regarding randomized controlled trials published by CAM journals in Q1 and Q2 section from January to June, 2023, to check the actual situation of ethical requirement. Descriptive statistics and Fisher’s exact test were used for statistical analysis.

RESULTS: 27 journals and 68 manuscripts were ultimately included. 92.6% (25/27) IFAs included keywords of ER, indicating the presence of ethical considerations. However, no specific ER was required for CAM (n = 0). We categorized journals by Geographic origin, JCR section, Year of electronic JCR, Types of studies, % of OA Gold to explore the factors that could influence CAM journals to have certain ethical review policies. The results showed there was no statistical significance in certain ethical review policy in any classification of journals (p > 0.05). All RCT manuscripts included in the study generally met the requirements of the published journals for ethical review.

CONCLUSIONS: All IFAs discussed ER, but the content was scattered, unfocused, and there were no specific ER requirements regarding CAM. Although the manuscripts basically met the requirements of the journal, it was not possible to get closer to the process of ER in the manuscript. To ensure full implementation of these policies in the future, CAM journals should require authors to provide more details, or to form a list of items necessary for CAM ethical review.

PMID:39003488 | DOI:10.1186/s12910-024-01077-1

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The efficacy of early office hysteroscopy in preventing intrauterine adhesions after abortion: a randomized controlled trial

BMC Womens Health. 2024 Jul 13;24(1):400. doi: 10.1186/s12905-024-03247-0.

ABSTRACT

BACKGROUND: Intrauterine adhesions (IUA) are a challenging clinical problem in reproductive infertility. The most common causes are intrauterine surgery and abortions. We aimed to investigate whether early second-look office hysteroscopy can prevent IUA.

METHODS: A single-center, prospective, two-armed, randomized controlled trial was designed to explore the efficacy of early office hysteroscopy after first-trimester induced abortion (suction dilatation and curettage [D&C]) and to further analyze fertility outcomes. Women aged 20-45 years undergoing suction D&C and desiring to conceive were recruited. Between October 2019 and September 2022, 66 women were enrolled, of whom 33 were allocated to group A (early hysteroscopy intervention). The women in intervention group A were planned to receive 2 times of hysteroscopies (early and late). In group B, women only underwent late (6 months post suction D&C) hysteroscopy.

RESULTS: The primary outcome was the IUA rate assessed using office hysteroscopy 6 months after artificial abortion. Secondary outcomes included menstrual amount/durations and fertility outcomes. In intervention group A, 31 women underwent the first hysteroscopy examination, and 15 completed the second. In group B (late hysteroscopy intervention, 33 patients), 16 completed the hysteroscopic exam 6 months after an artificial abortion. Twenty-one women did not receive late hysteroscopy due to pregnancy. The IUA rate was 16.1% (5/31) at the first hysteroscopy in group A, and no IUA was detected during late hysteroscopy. Neither group showed statistically significant differences in the follow-up pregnancy and live birth rates.

CONCLUSIONS: Early hysteroscopy following suction D&C can detect intrauterine lesions. IUA detected early by hysteroscopy can disappear on late examination and become insignificant for future pregnancies. Notably, the pregnancy outcomes showed a favorable trend in the early hysteroscopy group, but there were no statistically significant differences.

TRIAL REGISTRATION: ClinicalTrials.gov , ID: NCT04166500. Registered on 2019-11-10. https://clinicaltrials.gov/ct2/show/NCT04166500 .

PMID:39003483 | DOI:10.1186/s12905-024-03247-0